Initial commit
This commit is contained in:
commit
6e4c877164
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@ -0,0 +1,12 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
# Attributes for GitHub Linguist
|
||||
*.h linguist-language=c
|
||||
configure.ac linguist-detectable=false
|
||||
Makefile.am linguist-detectable=false
|
|
@ -0,0 +1,47 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
# IDE & plugins
|
||||
.idea/
|
||||
.vscode/
|
||||
.ccls*
|
||||
|
||||
# OSX stuff
|
||||
.DS_Store
|
||||
|
||||
# Autotools
|
||||
autoscan.log
|
||||
configure.scan
|
||||
*.cache/
|
||||
.deps/
|
||||
config.*
|
||||
configure
|
||||
Makefile.in
|
||||
Makefile
|
||||
depcomp
|
||||
compile
|
||||
libtool
|
||||
ltmain.sh
|
||||
install-sh
|
||||
missing
|
||||
stamp-h1
|
||||
.dirstamp
|
||||
aclocal.m4
|
||||
|
||||
# build
|
||||
*.o
|
||||
*.lo
|
||||
*.loT
|
||||
*.la
|
||||
*.lai
|
||||
*.a
|
||||
*.so
|
||||
*.dylib
|
||||
.libs/
|
||||
examples/sixdraw
|
||||
tests/tcsgrep
|
|
@ -0,0 +1,44 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
language: c
|
||||
|
||||
os:
|
||||
- linux
|
||||
- osx
|
||||
|
||||
dist: focal
|
||||
|
||||
compiler:
|
||||
- gcc
|
||||
- clang
|
||||
|
||||
addons:
|
||||
apt:
|
||||
update: true
|
||||
packages:
|
||||
- autoconf-archive
|
||||
- dejagnu
|
||||
homebrew:
|
||||
update: true
|
||||
packages:
|
||||
- autoconf-archive
|
||||
- dejagnu
|
||||
|
||||
branches:
|
||||
only:
|
||||
- master
|
||||
|
||||
before_script:
|
||||
- test $TRAVIS_OS_NAME$CC = osxgcc && export CC=gcc-9 || true
|
||||
|
||||
script:
|
||||
- autoreconf --install
|
||||
- ./configure CFLAGS='-O0 -g -Wall -Wextra -Wpedantic'
|
||||
- make
|
||||
- sudo make install
|
|
@ -0,0 +1,674 @@
|
|||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 3, 29 June 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The GNU General Public License is a free, copyleft license for
|
||||
software and other kinds of works.
|
||||
|
||||
The licenses for most software and other practical works are designed
|
||||
to take away your freedom to share and change the works. By contrast,
|
||||
the GNU General Public License is intended to guarantee your freedom to
|
||||
share and change all versions of a program--to make sure it remains free
|
||||
software for all its users. We, the Free Software Foundation, use the
|
||||
GNU General Public License for most of our software; it applies also to
|
||||
any other work released this way by its authors. You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
them if you wish), that you receive source code or can get it if you
|
||||
want it, that you can change the software or use pieces of it in new
|
||||
free programs, and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to prevent others from denying you
|
||||
these rights or asking you to surrender the rights. Therefore, you have
|
||||
certain responsibilities if you distribute copies of the software, or if
|
||||
you modify it: responsibilities to respect the freedom of others.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must pass on to the recipients the same
|
||||
freedoms that you received. You must make sure that they, too, receive
|
||||
or can get the source code. And you must show them these terms so they
|
||||
know their rights.
|
||||
|
||||
Developers that use the GNU GPL protect your rights with two steps:
|
||||
(1) assert copyright on the software, and (2) offer you this License
|
||||
giving you legal permission to copy, distribute and/or modify it.
|
||||
|
||||
For the developers' and authors' protection, the GPL clearly explains
|
||||
that there is no warranty for this free software. For both users' and
|
||||
authors' sake, the GPL requires that modified versions be marked as
|
||||
changed, so that their problems will not be attributed erroneously to
|
||||
authors of previous versions.
|
||||
|
||||
Some devices are designed to deny users access to install or run
|
||||
modified versions of the software inside them, although the manufacturer
|
||||
can do so. This is fundamentally incompatible with the aim of
|
||||
protecting users' freedom to change the software. The systematic
|
||||
pattern of such abuse occurs in the area of products for individuals to
|
||||
use, which is precisely where it is most unacceptable. Therefore, we
|
||||
have designed this version of the GPL to prohibit the practice for those
|
||||
products. If such problems arise substantially in other domains, we
|
||||
stand ready to extend this provision to those domains in future versions
|
||||
of the GPL, as needed to protect the freedom of users.
|
||||
|
||||
Finally, every program is threatened constantly by software patents.
|
||||
States should not allow patents to restrict development and use of
|
||||
software on general-purpose computers, but in those that do, we wish to
|
||||
avoid the special danger that patents applied to a free program could
|
||||
make it effectively proprietary. To prevent this, the GPL assures that
|
||||
patents cannot be used to render the program non-free.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
TERMS AND CONDITIONS
|
||||
|
||||
0. Definitions.
|
||||
|
||||
"This License" refers to version 3 of the GNU General Public License.
|
||||
|
||||
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||
works, such as semiconductor masks.
|
||||
|
||||
"The Program" refers to any copyrightable work licensed under this
|
||||
License. Each licensee is addressed as "you". "Licensees" and
|
||||
"recipients" may be individuals or organizations.
|
||||
|
||||
To "modify" a work means to copy from or adapt all or part of the work
|
||||
in a fashion requiring copyright permission, other than the making of an
|
||||
exact copy. The resulting work is called a "modified version" of the
|
||||
earlier work or a work "based on" the earlier work.
|
||||
|
||||
A "covered work" means either the unmodified Program or a work based
|
||||
on the Program.
|
||||
|
||||
To "propagate" a work means to do anything with it that, without
|
||||
permission, would make you directly or secondarily liable for
|
||||
infringement under applicable copyright law, except executing it on a
|
||||
computer or modifying a private copy. Propagation includes copying,
|
||||
distribution (with or without modification), making available to the
|
||||
public, and in some countries other activities as well.
|
||||
|
||||
To "convey" a work means any kind of propagation that enables other
|
||||
parties to make or receive copies. Mere interaction with a user through
|
||||
a computer network, with no transfer of a copy, is not conveying.
|
||||
|
||||
An interactive user interface displays "Appropriate Legal Notices"
|
||||
to the extent that it includes a convenient and prominently visible
|
||||
feature that (1) displays an appropriate copyright notice, and (2)
|
||||
tells the user that there is no warranty for the work (except to the
|
||||
extent that warranties are provided), that licensees may convey the
|
||||
work under this License, and how to view a copy of this License. If
|
||||
the interface presents a list of user commands or options, such as a
|
||||
menu, a prominent item in the list meets this criterion.
|
||||
|
||||
1. Source Code.
|
||||
|
||||
The "source code" for a work means the preferred form of the work
|
||||
for making modifications to it. "Object code" means any non-source
|
||||
form of a work.
|
||||
|
||||
A "Standard Interface" means an interface that either is an official
|
||||
standard defined by a recognized standards body, or, in the case of
|
||||
interfaces specified for a particular programming language, one that
|
||||
is widely used among developers working in that language.
|
||||
|
||||
The "System Libraries" of an executable work include anything, other
|
||||
than the work as a whole, that (a) is included in the normal form of
|
||||
packaging a Major Component, but which is not part of that Major
|
||||
Component, and (b) serves only to enable use of the work with that
|
||||
Major Component, or to implement a Standard Interface for which an
|
||||
implementation is available to the public in source code form. A
|
||||
"Major Component", in this context, means a major essential component
|
||||
(kernel, window system, and so on) of the specific operating system
|
||||
(if any) on which the executable work runs, or a compiler used to
|
||||
produce the work, or an object code interpreter used to run it.
|
||||
|
||||
The "Corresponding Source" for a work in object code form means all
|
||||
the source code needed to generate, install, and (for an executable
|
||||
work) run the object code and to modify the work, including scripts to
|
||||
control those activities. However, it does not include the work's
|
||||
System Libraries, or general-purpose tools or generally available free
|
||||
programs which are used unmodified in performing those activities but
|
||||
which are not part of the work. For example, Corresponding Source
|
||||
includes interface definition files associated with source files for
|
||||
the work, and the source code for shared libraries and dynamically
|
||||
linked subprograms that the work is specifically designed to require,
|
||||
such as by intimate data communication or control flow between those
|
||||
subprograms and other parts of the work.
|
||||
|
||||
The Corresponding Source need not include anything that users
|
||||
can regenerate automatically from other parts of the Corresponding
|
||||
Source.
|
||||
|
||||
The Corresponding Source for a work in source code form is that
|
||||
same work.
|
||||
|
||||
2. Basic Permissions.
|
||||
|
||||
All rights granted under this License are granted for the term of
|
||||
copyright on the Program, and are irrevocable provided the stated
|
||||
conditions are met. This License explicitly affirms your unlimited
|
||||
permission to run the unmodified Program. The output from running a
|
||||
covered work is covered by this License only if the output, given its
|
||||
content, constitutes a covered work. This License acknowledges your
|
||||
rights of fair use or other equivalent, as provided by copyright law.
|
||||
|
||||
You may make, run and propagate covered works that you do not
|
||||
convey, without conditions so long as your license otherwise remains
|
||||
in force. You may convey covered works to others for the sole purpose
|
||||
of having them make modifications exclusively for you, or provide you
|
||||
with facilities for running those works, provided that you comply with
|
||||
the terms of this License in conveying all material for which you do
|
||||
not control copyright. Those thus making or running the covered works
|
||||
for you must do so exclusively on your behalf, under your direction
|
||||
and control, on terms that prohibit them from making any copies of
|
||||
your copyrighted material outside their relationship with you.
|
||||
|
||||
Conveying under any other circumstances is permitted solely under
|
||||
the conditions stated below. Sublicensing is not allowed; section 10
|
||||
makes it unnecessary.
|
||||
|
||||
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||
|
||||
No covered work shall be deemed part of an effective technological
|
||||
measure under any applicable law fulfilling obligations under article
|
||||
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||
similar laws prohibiting or restricting circumvention of such
|
||||
measures.
|
||||
|
||||
When you convey a covered work, you waive any legal power to forbid
|
||||
circumvention of technological measures to the extent such circumvention
|
||||
is effected by exercising rights under this License with respect to
|
||||
the covered work, and you disclaim any intention to limit operation or
|
||||
modification of the work as a means of enforcing, against the work's
|
||||
users, your or third parties' legal rights to forbid circumvention of
|
||||
technological measures.
|
||||
|
||||
4. Conveying Verbatim Copies.
|
||||
|
||||
You may convey verbatim copies of the Program's source code as you
|
||||
receive it, in any medium, provided that you conspicuously and
|
||||
appropriately publish on each copy an appropriate copyright notice;
|
||||
keep intact all notices stating that this License and any
|
||||
non-permissive terms added in accord with section 7 apply to the code;
|
||||
keep intact all notices of the absence of any warranty; and give all
|
||||
recipients a copy of this License along with the Program.
|
||||
|
||||
You may charge any price or no price for each copy that you convey,
|
||||
and you may offer support or warranty protection for a fee.
|
||||
|
||||
5. Conveying Modified Source Versions.
|
||||
|
||||
You may convey a work based on the Program, or the modifications to
|
||||
produce it from the Program, in the form of source code under the
|
||||
terms of section 4, provided that you also meet all of these conditions:
|
||||
|
||||
a) The work must carry prominent notices stating that you modified
|
||||
it, and giving a relevant date.
|
||||
|
||||
b) The work must carry prominent notices stating that it is
|
||||
released under this License and any conditions added under section
|
||||
7. This requirement modifies the requirement in section 4 to
|
||||
"keep intact all notices".
|
||||
|
||||
c) You must license the entire work, as a whole, under this
|
||||
License to anyone who comes into possession of a copy. This
|
||||
License will therefore apply, along with any applicable section 7
|
||||
additional terms, to the whole of the work, and all its parts,
|
||||
regardless of how they are packaged. This License gives no
|
||||
permission to license the work in any other way, but it does not
|
||||
invalidate such permission if you have separately received it.
|
||||
|
||||
d) If the work has interactive user interfaces, each must display
|
||||
Appropriate Legal Notices; however, if the Program has interactive
|
||||
interfaces that do not display Appropriate Legal Notices, your
|
||||
work need not make them do so.
|
||||
|
||||
A compilation of a covered work with other separate and independent
|
||||
works, which are not by their nature extensions of the covered work,
|
||||
and which are not combined with it such as to form a larger program,
|
||||
in or on a volume of a storage or distribution medium, is called an
|
||||
"aggregate" if the compilation and its resulting copyright are not
|
||||
used to limit the access or legal rights of the compilation's users
|
||||
beyond what the individual works permit. Inclusion of a covered work
|
||||
in an aggregate does not cause this License to apply to the other
|
||||
parts of the aggregate.
|
||||
|
||||
6. Conveying Non-Source Forms.
|
||||
|
||||
You may convey a covered work in object code form under the terms
|
||||
of sections 4 and 5, provided that you also convey the
|
||||
machine-readable Corresponding Source under the terms of this License,
|
||||
in one of these ways:
|
||||
|
||||
a) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by the
|
||||
Corresponding Source fixed on a durable physical medium
|
||||
customarily used for software interchange.
|
||||
|
||||
b) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by a
|
||||
written offer, valid for at least three years and valid for as
|
||||
long as you offer spare parts or customer support for that product
|
||||
model, to give anyone who possesses the object code either (1) a
|
||||
copy of the Corresponding Source for all the software in the
|
||||
product that is covered by this License, on a durable physical
|
||||
medium customarily used for software interchange, for a price no
|
||||
more than your reasonable cost of physically performing this
|
||||
conveying of source, or (2) access to copy the
|
||||
Corresponding Source from a network server at no charge.
|
||||
|
||||
c) Convey individual copies of the object code with a copy of the
|
||||
written offer to provide the Corresponding Source. This
|
||||
alternative is allowed only occasionally and noncommercially, and
|
||||
only if you received the object code with such an offer, in accord
|
||||
with subsection 6b.
|
||||
|
||||
d) Convey the object code by offering access from a designated
|
||||
place (gratis or for a charge), and offer equivalent access to the
|
||||
Corresponding Source in the same way through the same place at no
|
||||
further charge. You need not require recipients to copy the
|
||||
Corresponding Source along with the object code. If the place to
|
||||
copy the object code is a network server, the Corresponding Source
|
||||
may be on a different server (operated by you or a third party)
|
||||
that supports equivalent copying facilities, provided you maintain
|
||||
clear directions next to the object code saying where to find the
|
||||
Corresponding Source. Regardless of what server hosts the
|
||||
Corresponding Source, you remain obligated to ensure that it is
|
||||
available for as long as needed to satisfy these requirements.
|
||||
|
||||
e) Convey the object code using peer-to-peer transmission, provided
|
||||
you inform other peers where the object code and Corresponding
|
||||
Source of the work are being offered to the general public at no
|
||||
charge under subsection 6d.
|
||||
|
||||
A separable portion of the object code, whose source code is excluded
|
||||
from the Corresponding Source as a System Library, need not be
|
||||
included in conveying the object code work.
|
||||
|
||||
A "User Product" is either (1) a "consumer product", which means any
|
||||
tangible personal property which is normally used for personal, family,
|
||||
or household purposes, or (2) anything designed or sold for incorporation
|
||||
into a dwelling. In determining whether a product is a consumer product,
|
||||
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||
product received by a particular user, "normally used" refers to a
|
||||
typical or common use of that class of product, regardless of the status
|
||||
of the particular user or of the way in which the particular user
|
||||
actually uses, or expects or is expected to use, the product. A product
|
||||
is a consumer product regardless of whether the product has substantial
|
||||
commercial, industrial or non-consumer uses, unless such uses represent
|
||||
the only significant mode of use of the product.
|
||||
|
||||
"Installation Information" for a User Product means any methods,
|
||||
procedures, authorization keys, or other information required to install
|
||||
and execute modified versions of a covered work in that User Product from
|
||||
a modified version of its Corresponding Source. The information must
|
||||
suffice to ensure that the continued functioning of the modified object
|
||||
code is in no case prevented or interfered with solely because
|
||||
modification has been made.
|
||||
|
||||
If you convey an object code work under this section in, or with, or
|
||||
specifically for use in, a User Product, and the conveying occurs as
|
||||
part of a transaction in which the right of possession and use of the
|
||||
User Product is transferred to the recipient in perpetuity or for a
|
||||
fixed term (regardless of how the transaction is characterized), the
|
||||
Corresponding Source conveyed under this section must be accompanied
|
||||
by the Installation Information. But this requirement does not apply
|
||||
if neither you nor any third party retains the ability to install
|
||||
modified object code on the User Product (for example, the work has
|
||||
been installed in ROM).
|
||||
|
||||
The requirement to provide Installation Information does not include a
|
||||
requirement to continue to provide support service, warranty, or updates
|
||||
for a work that has been modified or installed by the recipient, or for
|
||||
the User Product in which it has been modified or installed. Access to a
|
||||
network may be denied when the modification itself materially and
|
||||
adversely affects the operation of the network or violates the rules and
|
||||
protocols for communication across the network.
|
||||
|
||||
Corresponding Source conveyed, and Installation Information provided,
|
||||
in accord with this section must be in a format that is publicly
|
||||
documented (and with an implementation available to the public in
|
||||
source code form), and must require no special password or key for
|
||||
unpacking, reading or copying.
|
||||
|
||||
7. Additional Terms.
|
||||
|
||||
"Additional permissions" are terms that supplement the terms of this
|
||||
License by making exceptions from one or more of its conditions.
|
||||
Additional permissions that are applicable to the entire Program shall
|
||||
be treated as though they were included in this License, to the extent
|
||||
that they are valid under applicable law. If additional permissions
|
||||
apply only to part of the Program, that part may be used separately
|
||||
under those permissions, but the entire Program remains governed by
|
||||
this License without regard to the additional permissions.
|
||||
|
||||
When you convey a copy of a covered work, you may at your option
|
||||
remove any additional permissions from that copy, or from any part of
|
||||
it. (Additional permissions may be written to require their own
|
||||
removal in certain cases when you modify the work.) You may place
|
||||
additional permissions on material, added by you to a covered work,
|
||||
for which you have or can give appropriate copyright permission.
|
||||
|
||||
Notwithstanding any other provision of this License, for material you
|
||||
add to a covered work, you may (if authorized by the copyright holders of
|
||||
that material) supplement the terms of this License with terms:
|
||||
|
||||
a) Disclaiming warranty or limiting liability differently from the
|
||||
terms of sections 15 and 16 of this License; or
|
||||
|
||||
b) Requiring preservation of specified reasonable legal notices or
|
||||
author attributions in that material or in the Appropriate Legal
|
||||
Notices displayed by works containing it; or
|
||||
|
||||
c) Prohibiting misrepresentation of the origin of that material, or
|
||||
requiring that modified versions of such material be marked in
|
||||
reasonable ways as different from the original version; or
|
||||
|
||||
d) Limiting the use for publicity purposes of names of licensors or
|
||||
authors of the material; or
|
||||
|
||||
e) Declining to grant rights under trademark law for use of some
|
||||
trade names, trademarks, or service marks; or
|
||||
|
||||
f) Requiring indemnification of licensors and authors of that
|
||||
material by anyone who conveys the material (or modified versions of
|
||||
it) with contractual assumptions of liability to the recipient, for
|
||||
any liability that these contractual assumptions directly impose on
|
||||
those licensors and authors.
|
||||
|
||||
All other non-permissive additional terms are considered "further
|
||||
restrictions" within the meaning of section 10. If the Program as you
|
||||
received it, or any part of it, contains a notice stating that it is
|
||||
governed by this License along with a term that is a further
|
||||
restriction, you may remove that term. If a license document contains
|
||||
a further restriction but permits relicensing or conveying under this
|
||||
License, you may add to a covered work material governed by the terms
|
||||
of that license document, provided that the further restriction does
|
||||
not survive such relicensing or conveying.
|
||||
|
||||
If you add terms to a covered work in accord with this section, you
|
||||
must place, in the relevant source files, a statement of the
|
||||
additional terms that apply to those files, or a notice indicating
|
||||
where to find the applicable terms.
|
||||
|
||||
Additional terms, permissive or non-permissive, may be stated in the
|
||||
form of a separately written license, or stated as exceptions;
|
||||
the above requirements apply either way.
|
||||
|
||||
8. Termination.
|
||||
|
||||
You may not propagate or modify a covered work except as expressly
|
||||
provided under this License. Any attempt otherwise to propagate or
|
||||
modify it is void, and will automatically terminate your rights under
|
||||
this License (including any patent licenses granted under the third
|
||||
paragraph of section 11).
|
||||
|
||||
However, if you cease all violation of this License, then your
|
||||
license from a particular copyright holder is reinstated (a)
|
||||
provisionally, unless and until the copyright holder explicitly and
|
||||
finally terminates your license, and (b) permanently, if the copyright
|
||||
holder fails to notify you of the violation by some reasonable means
|
||||
prior to 60 days after the cessation.
|
||||
|
||||
Moreover, your license from a particular copyright holder is
|
||||
reinstated permanently if the copyright holder notifies you of the
|
||||
violation by some reasonable means, this is the first time you have
|
||||
received notice of violation of this License (for any work) from that
|
||||
copyright holder, and you cure the violation prior to 30 days after
|
||||
your receipt of the notice.
|
||||
|
||||
Termination of your rights under this section does not terminate the
|
||||
licenses of parties who have received copies or rights from you under
|
||||
this License. If your rights have been terminated and not permanently
|
||||
reinstated, you do not qualify to receive new licenses for the same
|
||||
material under section 10.
|
||||
|
||||
9. Acceptance Not Required for Having Copies.
|
||||
|
||||
You are not required to accept this License in order to receive or
|
||||
run a copy of the Program. Ancillary propagation of a covered work
|
||||
occurring solely as a consequence of using peer-to-peer transmission
|
||||
to receive a copy likewise does not require acceptance. However,
|
||||
nothing other than this License grants you permission to propagate or
|
||||
modify any covered work. These actions infringe copyright if you do
|
||||
not accept this License. Therefore, by modifying or propagating a
|
||||
covered work, you indicate your acceptance of this License to do so.
|
||||
|
||||
10. Automatic Licensing of Downstream Recipients.
|
||||
|
||||
Each time you convey a covered work, the recipient automatically
|
||||
receives a license from the original licensors, to run, modify and
|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Use with the GNU Affero General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU Affero General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the special requirements of the GNU Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
state the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program does terminal interaction, make it output a short
|
||||
notice like this when it starts in an interactive mode:
|
||||
|
||||
<program> Copyright (C) <year> <name of author>
|
||||
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, your program's commands
|
||||
might be different; for a GUI interface, you would use an "about box".
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU GPL, see
|
||||
<https://www.gnu.org/licenses/>.
|
||||
|
||||
The GNU General Public License does not permit incorporating your program
|
||||
into proprietary programs. If your program is a subroutine library, you
|
||||
may consider it more useful to permit linking proprietary applications with
|
||||
the library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License. But first, please read
|
||||
<https://www.gnu.org/licenses/why-not-lgpl.html>.
|
|
@ -0,0 +1,59 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
#+TITLE: Installation Guidelines
|
||||
|
||||
** Copy Library Code to Your Project
|
||||
|
||||
This is the recommended way to use this library. Just copy [[file:src/ctlseqs.h][ctlseqs.h]] and
|
||||
[[file:src/ctlseqs.c][ctlseqs.c]] (and optionally the C++ wrapper [[file:src/ctlseqs.hh][ctlseqs.hh]]) to your project and
|
||||
build it alongside with other code.
|
||||
|
||||
No precautions need to be taken, as ctlseqs has no third-party dependencies
|
||||
and does not require any fancy compiler flags or CPP macros. An ISO C99 and
|
||||
POSIX.1-2008 compliant C implementation would suffice.
|
||||
|
||||
** Build and Install From Source
|
||||
|
||||
Alternatively, You may want a systemwide installation of the library and
|
||||
link it to your project. Some scripts are provided to help you with that.
|
||||
|
||||
GNU Autoconf, Automake, Libtool and Autoconf Archive is required.
|
||||
|
||||
Generate and execute configure script. There are no custom configuration
|
||||
options available for this library, just builtin ones.
|
||||
|
||||
#+BEGIN_SRC shell
|
||||
autoreconf --install
|
||||
./configure --prefix=$HOME CFLAGS='-O0 -g'
|
||||
#+END_SRC
|
||||
|
||||
Compile the library source code, as well as [[file:examples][examples]] and test suites.
|
||||
Optionally, you can run the test suite (requires DejaGnu), install the
|
||||
binary and man pages to your prefix.
|
||||
|
||||
#+BEGIN_SRC shell
|
||||
make && make check && make install
|
||||
#+END_SRC
|
||||
|
||||
Finally, link it to your project with the ~-lctlseqs~ (or similar) flag.
|
||||
|
||||
** Install From a Package Manager
|
||||
|
||||
We maintain unofficial repositories for a few package managers, so that the
|
||||
ctlseqs library can be installed from them.
|
||||
|
||||
However, there is no guarantee that any of those repositories will be
|
||||
actively maintained in the future.
|
||||
|
||||
*** Homebrew
|
||||
|
||||
#+BEGIN_SRC shell
|
||||
brew tap CismonX/repos
|
||||
brew install ctlseqs
|
||||
#+END_SRC
|
|
@ -0,0 +1,9 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
SUBDIRS = src man tests examples
|
|
@ -0,0 +1,35 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
#+TITLE: README
|
||||
|
||||
[[https://travis-ci.com/CismonX/ctlseqs][https://travis-ci.com/CismonX/ctlseqs.svg]]
|
||||
[[file:COPYING][https://img.shields.io/badge/license-GPL--3.0--or--later-blue.svg]]
|
||||
|
||||
ctlseqs - helper library for terminal control sequences
|
||||
|
||||
** Description
|
||||
|
||||
The ctlseqs library provides low-level C API for manipulating terminal
|
||||
emulators with control sequences.
|
||||
|
||||
This library is free software. you can redistribute it and/or modify it
|
||||
under the terms of the GNU General Public License as published by the
|
||||
Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
** Getting Started
|
||||
|
||||
Build from source or install from a package manager. See [[file:INSTALL.org][INSTALL.org]]
|
||||
for details.
|
||||
|
||||
For documentation, see the [[man/ctlseqs.7][ctlseqs(7)]] man page, and also
|
||||
[[https://invisible-island.net/xterm/ctlseqs/ctlseqs.html][XTerm Control Sequences]] if you're unfamiliar with them.
|
||||
|
||||
Some [[file:examples][examples]] are provided to demonstrate the basic usage of this
|
||||
library.
|
|
@ -0,0 +1,50 @@
|
|||
dnl
|
||||
dnl Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
dnl
|
||||
dnl Copying and distribution of this file, with or without modification, are
|
||||
dnl permitted in any medium without royalty, provided the copyright notice and
|
||||
dnl this notice are preserved. This file is offered as-is, without any warranty.
|
||||
dnl
|
||||
|
||||
AC_PREREQ([2.60])
|
||||
AC_INIT([ctlseqs], [0.01], [bug-report@cismon.net])
|
||||
AC_CONFIG_SRCDIR([src/ctlseqs.c])
|
||||
AC_CONFIG_HEADERS([config.h])
|
||||
AM_INIT_AUTOMAKE([foreign])
|
||||
LT_PREREQ([2.4.0])
|
||||
LT_INIT
|
||||
|
||||
# Checks for programs.
|
||||
AC_PROG_CC_C99
|
||||
AC_PROG_CXX
|
||||
AC_PROG_AWK
|
||||
AC_PROG_CPP
|
||||
AC_PROG_INSTALL
|
||||
AC_PROG_LN_S
|
||||
AC_PROG_MAKE_SET
|
||||
AC_PROG_RANLIB
|
||||
|
||||
# Checks for compiler builtins and attributes.
|
||||
m4_ifdef([AX_GCC_BUILTIN], [
|
||||
AX_GCC_BUILTIN(__builtin_expect)
|
||||
AX_GCC_BUILTIN(__builtin_unreachable)
|
||||
AX_GCC_FUNC_ATTRIBUTE(cold)
|
||||
AX_GCC_FUNC_ATTRIBUTE(hot)
|
||||
])
|
||||
|
||||
# Checks for header files.
|
||||
AC_CHECK_HEADERS([fcntl.h limits.h stddef.h stdlib.h string.h sys/ioctl.h termios.h unistd.h])
|
||||
|
||||
# Checks for typedefs, structures, and compiler characteristics.
|
||||
AC_CHECK_HEADER_STDBOOL
|
||||
AC_C_INLINE
|
||||
AC_TYPE_SIZE_T
|
||||
AC_TYPE_SSIZE_T
|
||||
|
||||
# Checks for library functions.
|
||||
AC_FUNC_MALLOC
|
||||
AC_FUNC_REALLOC
|
||||
AC_CHECK_FUNCS([dprintf memset strtoul])
|
||||
|
||||
AC_CONFIG_FILES([Makefile man/Makefile src/Makefile tests/Makefile examples/Makefile])
|
||||
AC_OUTPUT
|
|
@ -0,0 +1,12 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
AM_CPPFLAGS = -I$(top_srcdir)/src
|
||||
noinst_PROGRAMS = sixdraw
|
||||
sixdraw_SOURCES = sixdraw.c
|
||||
sixdraw_LDADD = $(top_srcdir)/src/libctlseqs.la
|
|
@ -0,0 +1,283 @@
|
|||
/**
|
||||
* sixdraw.c - draw lines on your terminal
|
||||
*
|
||||
* Requires sixel graphics and DEC locator support to run on your terminal.
|
||||
* These features are not widely supported. To save yourself from trouble,
|
||||
* use a latest version of XTerm or mlterm.
|
||||
*
|
||||
* Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
# include "config.h"
|
||||
#endif // HAVE_CONFIG_H
|
||||
|
||||
#include <signal.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include <fcntl.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <termios.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <ctlseqs.h>
|
||||
|
||||
#ifndef SIXDRAW_DEFAULT_TIMEOUT_MILLIS
|
||||
# define SIXDRAW_DEFAULT_TIMEOUT_MILLIS 500
|
||||
#endif // !SIXDRAW_DEFAULT_TIMEOUT_MILLIS
|
||||
|
||||
struct sixdraw_ctx {
|
||||
struct termios termios;
|
||||
union ctlseqs_value buffer[10];
|
||||
char *prog_name;
|
||||
struct ctlseqs_matcher *matcher;
|
||||
struct ctlseqs_reader *reader;
|
||||
bool has_termios;
|
||||
bool show_cursor;
|
||||
int in_fd;
|
||||
int out_fd;
|
||||
int timeout;
|
||||
int rows;
|
||||
int cols;
|
||||
int ch_width;
|
||||
int ch_height;
|
||||
};
|
||||
|
||||
static inline void
|
||||
sixdraw_print_error(struct sixdraw_ctx *ctx, char const *msg)
|
||||
{
|
||||
dprintf(ctx->out_fd, "%s: [error] %s.\n", ctx->prog_name, msg);
|
||||
}
|
||||
|
||||
static inline void
|
||||
sixdraw_clear_signal(int signum)
|
||||
{
|
||||
sigset_t sigset;
|
||||
sigemptyset(&sigset);
|
||||
sigaddset(&sigset, signum);
|
||||
sigwait(&sigset, &signum);
|
||||
}
|
||||
|
||||
static bool
|
||||
sixdraw_handle_signals(struct sixdraw_ctx *ctx)
|
||||
{
|
||||
sigset_t sigset;
|
||||
sigpending(&sigset);
|
||||
if (!sigismember(&sigset, SIGWINCH)) {
|
||||
return false;
|
||||
}
|
||||
sixdraw_clear_signal(SIGWINCH);
|
||||
return true;
|
||||
}
|
||||
|
||||
static void
|
||||
sixdraw_terminate(struct sixdraw_ctx *ctx)
|
||||
{
|
||||
ctlseqs_matcher_free(ctx->matcher);
|
||||
ctlseqs_reader_free(ctx->reader);
|
||||
|
||||
// Restore original terminal modes
|
||||
if (ctx->has_termios) {
|
||||
tcsetattr(ctx->in_fd, TCSANOW, &ctx->termios);
|
||||
}
|
||||
}
|
||||
|
||||
static bool
|
||||
sixdraw_get_winsize(struct sixdraw_ctx *ctx)
|
||||
{
|
||||
struct winsize ws = { 0 };
|
||||
if (ioctl(ctx->in_fd, TIOCGWINSZ, &ws) != 0) {
|
||||
return false;
|
||||
}
|
||||
if (ws.ws_xpixel == 0 || ws.ws_ypixel == 0) {
|
||||
return false;
|
||||
}
|
||||
ctx->rows = ws.ws_row;
|
||||
ctx->cols = ws.ws_col;
|
||||
ctx->ch_width = ws.ws_xpixel / ws.ws_col;
|
||||
ctx->ch_height = ws.ws_ypixel / ws.ws_row;
|
||||
dprintf(ctx->out_fd, "%d %d \n%d %d %d %d\n", ws.ws_xpixel, ws.ws_ypixel, ctx->rows, ctx->cols, ctx->ch_width, ctx->ch_height);
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
sixdraw_init(struct sixdraw_ctx *ctx, int argc, char **argv)
|
||||
{
|
||||
*ctx = (struct sixdraw_ctx) {
|
||||
.prog_name = argc > 0 ? argv[0] : "sixdraw",
|
||||
.in_fd = STDIN_FILENO,
|
||||
.out_fd = STDOUT_FILENO,
|
||||
.timeout = SIXDRAW_DEFAULT_TIMEOUT_MILLIS,
|
||||
};
|
||||
|
||||
// Process command line arguments
|
||||
int opt;
|
||||
while (-1 != (opt = getopt(argc, argv, "t:"))) {
|
||||
switch (opt) {
|
||||
case 't':
|
||||
ctx->timeout = atoi(optarg);
|
||||
break;
|
||||
case '?':
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// Initialize control sequence matcher
|
||||
ctx->matcher = ctlseqs_matcher_init();
|
||||
if (ctx->matcher == NULL) {
|
||||
sixdraw_print_error(ctx, "failed to initialize matcher");
|
||||
return false;
|
||||
}
|
||||
char const *patterns[] = {
|
||||
CTLSEQS_RESP_PRIMARY_DA(CTLSEQS_PH_NUMS),
|
||||
CTLSEQS_RESP_DECRQM(CTLSEQS_PH_NUM, CTLSEQS_PH_NUM)
|
||||
};
|
||||
struct ctlseqs_matcher_opts options = {
|
||||
.patterns = patterns,
|
||||
.npatterns = sizeof(patterns) / sizeof(char const *),
|
||||
};
|
||||
if (ctlseqs_matcher_setopt(ctx->matcher, &options) != 0) {
|
||||
sixdraw_print_error(ctx, "failed to set matcher options");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Initialize control sequence reader
|
||||
ctx->reader = ctlseqs_reader_init();
|
||||
if (ctx->reader == NULL) {
|
||||
sixdraw_print_error(ctx, "failed to initialize reader");
|
||||
return false;
|
||||
}
|
||||
struct ctlseqs_reader_opts reader_opts = {
|
||||
.buffer = ctx->buffer,
|
||||
.fd = ctx->in_fd,
|
||||
.maxlen = 32,
|
||||
};
|
||||
if (ctlseqs_reader_setopt(ctx->reader, &reader_opts) != CTLSEQS_OK) {
|
||||
sixdraw_print_error(ctx, "failed to set reader options");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Block SIGWINCH
|
||||
sigset_t sigset;
|
||||
sigemptyset(&sigset);
|
||||
sigaddset(&sigset, SIGWINCH);
|
||||
sigprocmask(SIG_BLOCK, &sigset, NULL);
|
||||
signal(SIGWINCH, SIG_DFL);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
sixdraw_prepare(struct sixdraw_ctx *ctx)
|
||||
{
|
||||
// Check whether we're running on a terminal
|
||||
if (!isatty(ctx->in_fd) || !isatty(ctx->out_fd)) {
|
||||
sixdraw_print_error(ctx, "this program can only run in a terminal");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Set terminal to noncanonical mode
|
||||
struct termios termios;
|
||||
if (tcgetattr(ctx->in_fd, &ctx->termios) != 0) {
|
||||
sixdraw_print_error(ctx, "failed to get terminal attributes");
|
||||
return false;
|
||||
}
|
||||
termios = ctx->termios;
|
||||
termios.c_lflag &= ~(ICANON | ISIG | ECHO);
|
||||
if (tcsetattr(ctx->in_fd, TCSANOW, &termios) != 0) {
|
||||
sixdraw_print_error(ctx, "failed to get terminal attributes");
|
||||
return false;
|
||||
}
|
||||
ctx->has_termios = true;
|
||||
|
||||
// Set STDIN flags to non-blocking
|
||||
int flags = fcntl(ctx->in_fd, F_GETFL);
|
||||
if (flags == -1) {
|
||||
sixdraw_print_error(ctx, "failed to get file status flags");
|
||||
return false;
|
||||
}
|
||||
if (fcntl(ctx->in_fd, F_SETFL, flags | O_NONBLOCK) == -1) {
|
||||
sixdraw_print_error(ctx, "failed to set file status flags");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Get initial terminal window size
|
||||
if (!sixdraw_get_winsize(ctx)) {
|
||||
sixdraw_print_error(ctx, "failed to get terminal window size");
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
|
||||
// Check terminal support for sixel graphics and DEC locator
|
||||
dprintf(ctx->out_fd, CTLSEQS_PRIMARY_DA());
|
||||
ssize_t result = ctlseqs_read(ctx->reader, ctx->matcher, 500);
|
||||
if (result != 0) {
|
||||
sixdraw_print_error(ctx, "failed to get terminal attributes");
|
||||
return false;
|
||||
}
|
||||
bool has_sixel = false;
|
||||
bool has_dec_locator = false;
|
||||
union ctlseqs_value *buffer = ctx->buffer;
|
||||
for (size_t i = 1; i <= buffer[0].num; ++i) {
|
||||
if (buffer[i].num == 4) {
|
||||
has_sixel = true;
|
||||
} else if (buffer[i].num == 29) {
|
||||
has_dec_locator = true;
|
||||
}
|
||||
}
|
||||
if (!has_sixel) {
|
||||
sixdraw_print_error(ctx, "terminal does not support sixel graphics");
|
||||
return false;
|
||||
}
|
||||
if (!has_dec_locator) {
|
||||
sixdraw_print_error(ctx, "terminal does not support DEC locator mode");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Get current cursor status
|
||||
dprintf(ctx->out_fd, CTLSEQS_DECRQM("25"));
|
||||
result = ctlseqs_read(ctx->reader, ctx->matcher, ctx->timeout);
|
||||
if (result != 1) {
|
||||
sixdraw_print_error(ctx, "failed to get cursor status");
|
||||
return false;
|
||||
}
|
||||
if (buffer[0].num != 25 || (buffer[1].num != 1 && buffer[1].num != 2)) {
|
||||
sixdraw_print_error(ctx, "cursor status not recognizable");
|
||||
return false;
|
||||
}
|
||||
ctx->show_cursor = buffer[1].num == 1;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
int status = 0;
|
||||
|
||||
struct sixdraw_ctx ctx;
|
||||
if (!sixdraw_init(&ctx, argc, argv) || !sixdraw_prepare(&ctx)) {
|
||||
status = -1;
|
||||
goto terminate;
|
||||
}
|
||||
|
||||
terminate:
|
||||
sixdraw_terminate(&ctx);
|
||||
return status;
|
||||
}
|
|
@ -0,0 +1,12 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
dist_man3_MANS = ctlseqs_matcher_init.3 ctlseqs_matcher_setopt.3 ctlseqs_matcher_free.3 \
|
||||
ctlseqs_reader_init.3 ctlseqs_reader_setopt.3 ctlseqs_read.3 ctlseqs_reader_free.3
|
||||
|
||||
dist_man7_MANS = ctlseqs.7
|
|
@ -0,0 +1,66 @@
|
|||
.TH CTLSEQS 7 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs - helper library for terminal control sequences
|
||||
.
|
||||
.SH SYNOPSIS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.B #define __cplusplus 201103L
|
||||
.BR "#include <ctlseqs.hh>" " /* C++ Wrapper */"
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
The ctlseqs library provides low-level API for manipulating terminal emulators with control sequences.
|
||||
.SS Terminal escape sequences
|
||||
Terminals and hosts exchange control information regarding colors, font styles, cursor position, etc., using escape sequences embedded in normal text.
|
||||
.PP
|
||||
In distant past, when there are no standard protocols to apply, those escape sequences are largely vendor-specific.
|
||||
We can assume that most, if not all modern terminal emulators recognize ANSI-compliant escape sequences, as well as supporting popular control functions like the ones shipped with DEC VT100 series.
|
||||
However, this is not guaranteed, and using raw escape sequences is prone to broken compatibility.
|
||||
.PP
|
||||
While most text-based applications should stick to terminfo/ncurses, there are occasions when dealing with raw escape sequences is inevitable.
|
||||
For example, when trying to make use of proprietary features provided by a specific terminal emulator.
|
||||
Or perhaps, when implementing one's own terminal emulator.
|
||||
.PP
|
||||
Writing escape sequences is pretty straightforward, but reading and processing them could be tricky, and not trivial to implement.
|
||||
.SS The ctlseqs library
|
||||
The ctlseqs library tries to make your life easier when dealing with raw escape sequences.
|
||||
There are three major concepts in the library, the reader, the matcher, and the helper macros.
|
||||
.PP
|
||||
The reader is responsible to read arbitrary data from a file descriptor, buffer it, and check whether it (or part of it) is a valid terminal control sequence.
|
||||
.PP
|
||||
The matcher is configured with patterns describing a terminal control sequence.
|
||||
After a sequence is successfully read, it can be matched against the patterns, and according to which, values can be extracted.
|
||||
.PP
|
||||
The helper macros include C0 (7-bit) control characters, commonly used control sequences (mostly CSI sequences) from DEC VTxxx series and XTerm, and placeholders.
|
||||
Helper macros always expand to string literals.
|
||||
.PP
|
||||
For reader/matcher details, see the corresponding man page in section 3.
|
||||
For helper macro details, see the source code of the
|
||||
.I ctlseqs.h
|
||||
header.
|
||||
.
|
||||
.SH BUGS
|
||||
C1 (8-bit) control characters are not supported.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR terminfo (5),
|
||||
.BR ncurses (3X)
|
||||
.PP
|
||||
.BR ctlseqs_matcher_init (3),
|
||||
.BR ctlseqs_matcher_setopt (3),
|
||||
.BR ctlseqs_matcher_free (3)
|
||||
.PP
|
||||
.BR ctlseqs_reader_init (3),
|
||||
.BR ctlseqs_reader_setopt (3),
|
||||
.BR ctlseqs_reader_free (3)
|
||||
.PP
|
||||
.BR ctlseqs_read (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,34 @@
|
|||
.TH CTLSEQS_MATCHER_FREE 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_matcher_free - free control sequence matcher
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.BI "void ctlseqs_matcher_free(struct ctlseqs_matcher *" matcher ");"
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Destroys a
|
||||
.I matcher
|
||||
instance created by
|
||||
.BR ctlseqs_matcher_init ()
|
||||
and release its holding memory.
|
||||
.PP
|
||||
If
|
||||
.I matcher
|
||||
is NULL, this function has no effect.
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
This function has no return values.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs_matcher_init (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,35 @@
|
|||
.TH CTLSEQS_MATCHER_INIT 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_matcher_init - initialize control sequence matcher
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.B struct ctlseqs_matcher *ctlseqs_matcher_init(void);
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Creates a control sequence matcher, which can be configured with
|
||||
.BR ctlseqs_matcher_setopt ().
|
||||
.PP
|
||||
Instance of a control sequence matcher should be freed with
|
||||
.BR ctlseqs_matcher_free ().
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
Returns a pointer to opaque type
|
||||
.B struct ctlseqs_matcher
|
||||
holding the matcher instance.
|
||||
.PP
|
||||
If the function fails to allocate sufficient memory, returns NULL.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs_matcher_setopt (3),
|
||||
.BR ctlseqs_matcher_free (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,63 @@
|
|||
.TH CTLSEQS_MATCHER_SETOPT 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_matcher_setopt - set control sequence matcher options
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.BI "int ctlseqs_matcher_setopt(struct ctlseqs_matcher *" matcher ,
|
||||
.BI " struct ctlseqs_matcher_opts const *" options );
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Changes the properties of the given
|
||||
.IR matcher .
|
||||
.PP
|
||||
The
|
||||
.I options
|
||||
argument is a pointer to a
|
||||
.BR "struct ctlseqs_matcher_opts" ,
|
||||
whose definition is shown below:
|
||||
.PP
|
||||
.nf
|
||||
.in +4n
|
||||
.EX
|
||||
struct ctlseqs_matcher_opts {
|
||||
char const *const *patterns;
|
||||
size_t npatterns;
|
||||
};
|
||||
.EE
|
||||
.in
|
||||
.fi
|
||||
.PP
|
||||
Field
|
||||
.I patterns
|
||||
is an array of pointers to NUL-terminated strings, each of which represents a pattern of control sequences.
|
||||
.PP
|
||||
Field
|
||||
.I npatterns
|
||||
is the number of strings provided in
|
||||
.IR patterns .
|
||||
.PP
|
||||
Multiple calls on the same
|
||||
.I matcher
|
||||
will discard all data from previous calls.
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
.TP
|
||||
.B CTLSEQS_OK
|
||||
Success.
|
||||
.TP
|
||||
.B CTLSEQS_NOMEM
|
||||
Fails to allocate sufficient memory.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs (7)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,99 @@
|
|||
.TH CTLSEQS_READ 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_read - read control sequence
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.BI "ssize_t ctlseqs_read(struct ctlseqs_reader *" reader ,
|
||||
.BI " struct ctlseqs_matcher const *" matcher ", int " timeout );
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Attempts to read a terminal control sequence, and extract values according to given patterns.
|
||||
.PP
|
||||
The
|
||||
.I reader
|
||||
argument specifies the behaviour of the read operation, which can be configured with
|
||||
.BR ctlseqs_reader_setopt ().
|
||||
.PP
|
||||
The
|
||||
.I matcher
|
||||
argument specifies the expected patterns of control sequences to be matched upon after a successful read, which can be configured with
|
||||
.BR ctlseqs_matcher_setopt ().
|
||||
A NULL
|
||||
.I matcher
|
||||
is allowed, acting as if
|
||||
.I npatterns
|
||||
is 0.
|
||||
.PP
|
||||
Argument
|
||||
.I timeout
|
||||
is the maximum duration of time (in milliseconds) to wait until any data can be read.
|
||||
If
|
||||
.I timeout
|
||||
is -1, the function blocks indefinitely. If option
|
||||
.B CTLSEQS_READER_NO_POLL
|
||||
is enabled, this argument has no effect.
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
If a control sequence is successfully read, and matches at least one pattern in
|
||||
.IR matcher ,
|
||||
returns a non-negative integer representing the offset of one of the matching patterns.
|
||||
.PP
|
||||
Otherwise, returns a negative value:
|
||||
.TP
|
||||
.B CTLSEQS_NOMATCH
|
||||
A control sequence is successfully read, but fails to match any pattern in
|
||||
.IR matcher .
|
||||
.TP
|
||||
.B CTLSEQS_PARTIAL
|
||||
Data is read successfully and can be recognized as part of a control sequence, but is not yet terminated.
|
||||
.TP
|
||||
.B CTLSEQS_NOSEQ
|
||||
Data is read successfully, but cannot be recognized as a valid control sequence.
|
||||
.TP
|
||||
.B CTLSEQS_TIMEOUT
|
||||
The specified
|
||||
.I timeout
|
||||
has expired, and no data is read.
|
||||
.TP
|
||||
.B CTLSEQS_EOF
|
||||
End-of-file is encountered, and no data is read.
|
||||
.TP
|
||||
.B CTLSEQS_ERROR
|
||||
An unexpected error occurs during a system call within the function.
|
||||
.TP
|
||||
.B CTLSEQS_INTR
|
||||
A system call within the function is interrupted by a signal, and no data is read.
|
||||
.
|
||||
.SH NOTES
|
||||
Any pattern in
|
||||
.I matcher
|
||||
must be a ECMA-35/ECMA-48 conformant escape sequence, and should also be recognizable by the matcher.
|
||||
Otherwise, function behaviour is undefined.
|
||||
.PP
|
||||
Currently supported escape sequences:
|
||||
.TP
|
||||
.B CSI [param...] [intmd...] final
|
||||
Parameter bytes are of range 0x30\(ti0x3f, intermediate bytes 0x20\(ti0x2f, and final byte 0x40\(ti0x7e.
|
||||
.TP
|
||||
.B (APC|DCS|OSC|PM) [cmdstr] ST
|
||||
Command string consists of bytes of printable characters and characters of range 0x08\(ti0x0d.
|
||||
.TP
|
||||
.B (SS2|SS3) ch
|
||||
The byte following a single-shift should be a printable character.
|
||||
.TP
|
||||
.B SOS [chrstr] ST
|
||||
Character string can be any bit combination which does not represent SOS or ST.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs_matcher_setopt (3),
|
||||
.BR ctlseqs_reader_setopt (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,34 @@
|
|||
.TH CTLSEQS_MATCHER_FREE 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_reader_free - free control sequence reader
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.BI "void ctlseqs_reader_free(struct ctlseqs_reader *" reader ");"
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Destroys a
|
||||
.I reader
|
||||
instance created by
|
||||
.BR ctlseqs_reader_init ()
|
||||
and release its holding memory.
|
||||
.PP
|
||||
If
|
||||
.I reader
|
||||
is NULL, this function has no effect.
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
This function has no return values.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs_reader_init (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,35 @@
|
|||
.TH CTLSEQS_READER_INIT 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_reader_init - initialize control sequence reader
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.B struct ctlseqs_reader *ctlseqs_reader_init(void);
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Creates a control sequence reader, which can be configured with
|
||||
.BR ctlseqs_reader_setopt ().
|
||||
.PP
|
||||
Instance of a control sequence reader should be freed with
|
||||
.BR ctlseqs_reader_free ().
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
Returns a pointer to opaque type
|
||||
.B struct ctlseqs_reader
|
||||
holding the reader instance.
|
||||
.PP
|
||||
If the function fails to allocate sufficient memory, returns NULL.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs_reader_setopt (3),
|
||||
.BR ctlseqs_reader_free (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty..
|
|
@ -0,0 +1,154 @@
|
|||
.TH CTLSEQS_READER_SETOPT 3 "Sep 01, 2020" 0.1.0 "Ctlseqs Library Manual"
|
||||
.
|
||||
.SH NAME
|
||||
ctlseqs_reader_setopt - set control sequence reader options
|
||||
.
|
||||
.SH SYNOPSYS
|
||||
.nf
|
||||
.B #include <ctlseqs.h>
|
||||
.PP
|
||||
.BI "int ctlseqs_reader_setopt(struct ctlseqs_reader *" reader ,
|
||||
.BI " struct ctlseqs_reader_opts const *" options );
|
||||
.fi
|
||||
.
|
||||
.SH DESCRIPTION
|
||||
Function
|
||||
.BR ctlseqs_reader_setopt ()
|
||||
changes the properties of the given
|
||||
.IR reader .
|
||||
.PP
|
||||
The
|
||||
.I options
|
||||
argument is a pointer to a
|
||||
.BR "struct ctlseqs_reader_opts" ,
|
||||
as shown below:
|
||||
.PP
|
||||
.nf
|
||||
.in +4n
|
||||
.EX
|
||||
struct ctlseqs_reader_opts {
|
||||
union ctlseqs_value *buffer;
|
||||
size_t maxlen;
|
||||
int fd;
|
||||
unsigned flags;
|
||||
};
|
||||
.EE
|
||||
.in
|
||||
.fi
|
||||
.PP
|
||||
Field
|
||||
.I buffer
|
||||
is the pointer to the buffer where the values extracted from the matching sequence of
|
||||
.BR ctlseqs_read ()
|
||||
will be stored.
|
||||
.PP
|
||||
Field
|
||||
.I maxlen
|
||||
specifies the maximum possible length (in bytes) of control sequence to be read.
|
||||
.PP
|
||||
Field
|
||||
.I fd
|
||||
is the file descriptor to read from.
|
||||
.PP
|
||||
Field
|
||||
.I flags
|
||||
is the bit mask of multiple boolean options.
|
||||
.SS Buffer Values
|
||||
A
|
||||
.I buffer
|
||||
is an array of
|
||||
.BR "union ctlseqs_value" ,
|
||||
as shown below:
|
||||
.PP
|
||||
.nf
|
||||
.in +4n
|
||||
.EX
|
||||
union ctlseqs_value {
|
||||
char const *str;
|
||||
unsigned long num;
|
||||
};
|
||||
.EE
|
||||
.in
|
||||
.fi
|
||||
.PP
|
||||
The value can be either a string (not guaranteed to be NUL-terminated), or an unsigned integer.
|
||||
Once a sequence is successfully matched, a group of values is extracted from the sequence for each placeholder, and stored into the buffer sequentially.
|
||||
.PP
|
||||
A group can contain one or multiple values, depending on different placeholders:
|
||||
.TP
|
||||
.B CTLSEQS_PH_NUM
|
||||
A single unsigned integer.
|
||||
.TP
|
||||
.B CTLSEQS_PH_NUMS
|
||||
An unsigned integer indicating the number of extracted values, followed by unsigned integers of that many.
|
||||
.TP
|
||||
.B CTLSEQS_PH_STR
|
||||
An unsigned integer indicating the number of characters of the extracted string, followed by a string of printable characters.
|
||||
.TP
|
||||
.B CTLSEQS_PH_CMDSTR
|
||||
An unsigned integer indicating the number of characters of the extracted string, followed by a string containing only printable characters and characters of range 0x08\(ti0x0d.
|
||||
.TP
|
||||
.B CTLSEQS_PH_CSI_PARAM
|
||||
An unsigned integer indicating the number of characters of the extracted string, followed by a string of CSI parameter bytes (range 0x30\(ti0x3f).
|
||||
.TP
|
||||
.B CTLSEQS_PH_CSI_INTMD
|
||||
An unsigned integer indicating the number of characters of the extracted string, followed by a string of CSI intermediate bytes (range 0x20\(ti0x2f).
|
||||
.TP
|
||||
.B CTLSEQS_PH_HEXNUM
|
||||
A single unsigned integer, which is the integer value of extracted hexadecimal string.
|
||||
.TP
|
||||
.B CTLSEQS_PH_CHRSTR
|
||||
An unsigned integer indicating the number of characters of the extracted string, followed by a string of any bit combination which does not represent SOS or ST.
|
||||
.PP
|
||||
If the
|
||||
.BR ctlseqs_read ()
|
||||
call returns
|
||||
.BR CTLSEQS_NOSEQ ,
|
||||
.B CTLSEQS_NOMATCH
|
||||
or
|
||||
.BR CTLSEQS_PARTIAL ,
|
||||
the length of the entire string followed by the string itself will be stored into the buffer.
|
||||
.SS Flags
|
||||
.TP
|
||||
.B CTLSEQS_READER_NO_POLL
|
||||
In a
|
||||
.BR ctlseqs_read ()
|
||||
call, do not
|
||||
.BR poll ()
|
||||
before
|
||||
.BR read ().
|
||||
You may want this option enabled if
|
||||
.I fd
|
||||
is maintained in an event loop.
|
||||
.TP
|
||||
.B CTLSEQS_READER_RETAIN_PARTIAL
|
||||
When
|
||||
.BR ctlseqs_read ()
|
||||
returns
|
||||
.BR CTLSEQS_PARTIAL ,
|
||||
preserve the partially matched sequence in the internal buffer for future calls.
|
||||
.
|
||||
.SH RETURN VALUE
|
||||
.TP
|
||||
.B CTLSEQS_OK
|
||||
Success.
|
||||
.TP
|
||||
.B CTLSEQS_NOMEM
|
||||
Fails to allocate sufficient memory.
|
||||
.SH BUGS
|
||||
After a successful
|
||||
.BR ctlseqs_read ()
|
||||
call, changing
|
||||
.I maxlen
|
||||
to a smaller value on the same
|
||||
.I reader
|
||||
may result in data loss due to truncation of the internal read buffer.
|
||||
.
|
||||
.SH SEE ALSO
|
||||
.BR ctlseqs_read (3)
|
||||
.
|
||||
.SH COPYRIGHT
|
||||
Copyright (c) 2020 CismonX <admin@cismon.net>
|
||||
.PP
|
||||
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty, provided the copyright notice and this notice are preserved.
|
||||
This file is offered as-is, without any warranty.
|
|
@ -0,0 +1,21 @@
|
|||
##
|
||||
## Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
##
|
||||
## This file is free software: you can redistribute it and/or modify
|
||||
## it under the terms of the GNU General Public License as published by
|
||||
## the Free Software Foundation, either version 3 of the License, or
|
||||
## (at your option) any later version.
|
||||
##
|
||||
## This file is distributed in the hope that it will be useful,
|
||||
## but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
## GNU General Public License for more details.
|
||||
##
|
||||
## You should have received a copy of the GNU General Public License
|
||||
## along with this file. If not, see <https://www.gnu.org/licenses/>.
|
||||
##
|
||||
|
||||
lib_LTLIBRARIES = libctlseqs.la
|
||||
libctlseqs_la_SOURCES = ctlseqs.c
|
||||
|
||||
include_HEADERS = ctlseqs.h ctlseqs.hh
|
|
@ -0,0 +1,502 @@
|
|||
/**
|
||||
* ctlseqs.c - helper library for terminal control sequences
|
||||
*
|
||||
* Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
*
|
||||
* This file is part of the ctlseqs library.
|
||||
*
|
||||
* This library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this library. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
# include "config.h"
|
||||
#endif // HAVE_CONFIG_H
|
||||
|
||||
#include "ctlseqs.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <limits.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#ifdef HAVE___BUILTIN_EXPECT
|
||||
# define CTLSEQS_LIKELY(expr) __builtin_expect(!!(expr), 1)
|
||||
# define CTLSEQS_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
|
||||
#else
|
||||
# define CTLSEQS_LIKELY(expr) (expr)
|
||||
# define CTLSEQS_UNLIKELY(expr) (expr)
|
||||
#endif // HAVE___BUILTIN_EXPECT
|
||||
#ifdef HAVE___BUILTIN_UNREACHABLE
|
||||
# define CTLSEQS_UNREACHABLE() __builtin_unreachable()
|
||||
#else
|
||||
# define CTLSEQS_UNREACHABLE()
|
||||
#endif // HAVE___BUILTIN_UNREACHABLE
|
||||
|
||||
#ifdef HAVE_FUNC_ATTRIBUTE_COLD
|
||||
# define CTLSEQS_COLD __attribute__((cold))
|
||||
#else
|
||||
# define CTLSEQS_COLD
|
||||
#endif // HAVE_FUNC_ATTRIBUTE_COLD
|
||||
#ifdef HAVE_FUNC_ATTRIBUTE_HOT
|
||||
# define CTLSEQS_HOT __attribute__((hot))
|
||||
#else
|
||||
# define CTLSEQS_HOT
|
||||
#endif // HAVE_FUNC_ATTRIBUTE_HOT
|
||||
|
||||
#ifndef CTLSEQS_TRIE_INIT_SIZE
|
||||
# define CTLSEQS_TRIE_INIT_SIZE 16
|
||||
#endif // !CTLSEQS_TRIE_INIT_SIZE
|
||||
|
||||
#define CTLSEQS_VALUE_STR(stop_cond) \
|
||||
for (cnt = 0; ; ++cnt) { \
|
||||
num = seq_val[cnt]; \
|
||||
if (stop_cond) { \
|
||||
break; \
|
||||
} \
|
||||
} \
|
||||
buf[0].num = cnt; \
|
||||
buf[1].str = seq_val; \
|
||||
*seq = seq_val + cnt; \
|
||||
*buf_offset += 2; \
|
||||
return true
|
||||
#define CTLSEQS_VALUE_NUM(base) \
|
||||
errno = 0; \
|
||||
num = strtoul(seq_val, seq, base); \
|
||||
if (errno != 0 || seq_val == *seq) { \
|
||||
return false; \
|
||||
} \
|
||||
buf[0].num = num; \
|
||||
*buf_offset += 1; \
|
||||
return true
|
||||
|
||||
enum ctlseqs_placeholder {
|
||||
ctlseqs_ph_begin = 0x0e,
|
||||
ctlseqs_ph_num = ctlseqs_ph_begin,
|
||||
ctlseqs_ph_nums,
|
||||
ctlseqs_ph_str,
|
||||
ctlseqs_ph_cmdstr,
|
||||
ctlseqs_ph_csi_param,
|
||||
ctlseqs_ph_csi_intmd,
|
||||
ctlseqs_ph_hexnum,
|
||||
ctlseqs_ph_chrstr,
|
||||
ctlseqs_ph_end,
|
||||
};
|
||||
|
||||
enum ctlseqs_state {
|
||||
ctlseqs_state_none,
|
||||
ctlseqs_state_esc,
|
||||
ctlseqs_state_csi,
|
||||
ctlseqs_state_csi_intmd,
|
||||
ctlseqs_state_cmdstr,
|
||||
ctlseqs_state_ss,
|
||||
ctlseqs_state_ctlstr,
|
||||
ctlseqs_state_str_end,
|
||||
ctlseqs_state_done,
|
||||
ctlseqs_state_err,
|
||||
};
|
||||
|
||||
struct ctlseqs_trie_node {
|
||||
ssize_t value;
|
||||
int placeholder;
|
||||
struct ctlseqs_trie_node *next;
|
||||
struct ctlseqs_trie_node *children[128];
|
||||
};
|
||||
|
||||
struct ctlseqs_match_ctx {
|
||||
ssize_t value;
|
||||
struct ctlseqs_trie_node const *node;
|
||||
char *buf;
|
||||
};
|
||||
|
||||
struct ctlseqs_matcher {
|
||||
struct ctlseqs_trie_node root;
|
||||
struct ctlseqs_trie_node *node_pool;
|
||||
size_t node_pool_size;
|
||||
struct ctlseqs_match_ctx *match_stack;
|
||||
};
|
||||
|
||||
struct ctlseqs_reader {
|
||||
union ctlseqs_value *buffer;
|
||||
size_t readlen;
|
||||
struct pollfd pollfd;
|
||||
bool no_poll;
|
||||
bool retain_partial;
|
||||
char *rbuf;
|
||||
size_t buf_start;
|
||||
size_t buf_end;
|
||||
enum ctlseqs_state state;
|
||||
};
|
||||
|
||||
CTLSEQS_HOT static int
|
||||
ctlseqs_poll(struct pollfd *pollfd, int timeout)
|
||||
{
|
||||
int nevents = poll(pollfd, 1, timeout);
|
||||
if (nevents == -1) {
|
||||
return errno == EINTR ? CTLSEQS_INTR : CTLSEQS_ERROR;
|
||||
}
|
||||
if (nevents == 0) {
|
||||
return CTLSEQS_TIMEOUT;
|
||||
}
|
||||
if (CTLSEQS_LIKELY(pollfd->revents & POLLIN)) {
|
||||
return CTLSEQS_OK;
|
||||
}
|
||||
return pollfd->revents & POLLHUP ? CTLSEQS_EOF : CTLSEQS_ERROR;
|
||||
}
|
||||
|
||||
CTLSEQS_HOT static int
|
||||
ctlseqs_do_read(struct ctlseqs_reader *reader)
|
||||
{
|
||||
ssize_t nbytes = read(reader->pollfd.fd, reader->rbuf + reader->buf_start, reader->readlen - reader->buf_start);
|
||||
if (CTLSEQS_UNLIKELY(nbytes == -1)) {
|
||||
if (errno == EAGAIN || errno == EWOULDBLOCK) {
|
||||
return CTLSEQS_TIMEOUT;
|
||||
}
|
||||
return errno == EINTR ? CTLSEQS_INTR : CTLSEQS_ERROR;
|
||||
}
|
||||
if (CTLSEQS_UNLIKELY(nbytes == 0)) {
|
||||
return CTLSEQS_EOF;
|
||||
}
|
||||
reader->buf_end += nbytes;
|
||||
return CTLSEQS_OK;
|
||||
}
|
||||
|
||||
CTLSEQS_HOT static enum ctlseqs_state
|
||||
ctlseqs_state_transit(enum ctlseqs_state state, char ch)
|
||||
{
|
||||
switch (state) {
|
||||
case ctlseqs_state_none:
|
||||
return ch == 0x1b ? ctlseqs_state_esc : ctlseqs_state_err;
|
||||
case ctlseqs_state_esc:
|
||||
switch (ch) {
|
||||
case '[':
|
||||
return ctlseqs_state_csi;
|
||||
case 'N':
|
||||
case 'O':
|
||||
return ctlseqs_state_ss;
|
||||
case 'P':
|
||||
case ']':
|
||||
case '_':
|
||||
case '^':
|
||||
return ctlseqs_state_cmdstr;
|
||||
case 'X':
|
||||
return ctlseqs_state_ctlstr;
|
||||
default:
|
||||
return (ch >= ' ' && ch <= '~') ? ctlseqs_state_done : ctlseqs_state_err;
|
||||
}
|
||||
case ctlseqs_state_csi:
|
||||
if (ch >= '0' && ch <= '?') {
|
||||
return state;
|
||||
}
|
||||
return (ch >= ' ' && ch <= '/') ? ctlseqs_state_csi_intmd : ctlseqs_state_err;
|
||||
case ctlseqs_state_csi_intmd:
|
||||
if (ch >= ' ' && ch <= '/') {
|
||||
return state;
|
||||
}
|
||||
return (ch >= '@' && ch <= '~') ? ctlseqs_state_done : ctlseqs_state_err;
|
||||
case ctlseqs_state_cmdstr:
|
||||
if (ch == 0x1b) {
|
||||
return ctlseqs_state_str_end;
|
||||
} else if (ch < 0x08 || ch > '~' || (ch > 0x0d && ch < ' ')) {
|
||||
return ctlseqs_state_err;
|
||||
} else {
|
||||
return state;
|
||||
}
|
||||
case ctlseqs_state_ss:
|
||||
return (ch >= ' ' && ch <= '~') ? ctlseqs_state_done : ctlseqs_state_err;
|
||||
case ctlseqs_state_ctlstr:
|
||||
return ch == 0x1b ? ctlseqs_state_str_end : state;
|
||||
case ctlseqs_state_str_end:
|
||||
return ch == '\\' ? ctlseqs_state_done : ctlseqs_state_err;
|
||||
default:
|
||||
CTLSEQS_UNREACHABLE();
|
||||
return state;
|
||||
}
|
||||
}
|
||||
|
||||
CTLSEQS_HOT bool
|
||||
ctlseqs_fetch(char **seq, int type, union ctlseqs_value *buf, size_t *buf_offset)
|
||||
{
|
||||
unsigned long cnt, num;
|
||||
char *seq_val = *seq;
|
||||
buf += *buf_offset;
|
||||
switch (type) {
|
||||
case ctlseqs_ph_num:
|
||||
CTLSEQS_VALUE_NUM(10);
|
||||
case ctlseqs_ph_nums:
|
||||
for (cnt = 1; ; ++cnt) {
|
||||
num = strtoul(seq_val, seq, 10);
|
||||
if (errno != 0 || seq_val == *seq) {
|
||||
return false;
|
||||
}
|
||||
buf[cnt].num = num;
|
||||
if (seq_val[0] == ';') {
|
||||
++seq_val;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
buf[0].num = cnt;
|
||||
*buf_offset += 1;
|
||||
return true;
|
||||
case ctlseqs_ph_str:
|
||||
CTLSEQS_VALUE_STR(num < ' ' || num > '~');
|
||||
case ctlseqs_ph_cmdstr:
|
||||
CTLSEQS_VALUE_STR(num < 0x08 || num > '~' || (num > 0x0d && num < ' '));
|
||||
case ctlseqs_ph_csi_param:
|
||||
CTLSEQS_VALUE_STR(num < '0' || num > '?');
|
||||
case ctlseqs_ph_csi_intmd:
|
||||
CTLSEQS_VALUE_STR(num < ' ' || num > '/');
|
||||
case ctlseqs_ph_hexnum:
|
||||
CTLSEQS_VALUE_NUM(16);
|
||||
case ctlseqs_ph_chrstr:
|
||||
CTLSEQS_VALUE_STR(num > 0x7f);
|
||||
default:
|
||||
CTLSEQS_UNREACHABLE();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
CTLSEQS_HOT static ssize_t
|
||||
ctlseqs_match_pattern(struct ctlseqs_reader *reader, struct ctlseqs_matcher const *matcher)
|
||||
{
|
||||
static struct ctlseqs_trie_node const *old_node, empty_node = { 0 };
|
||||
struct ctlseqs_match_ctx match_ctx = {
|
||||
.node = matcher == NULL ? &empty_node : &matcher->root,
|
||||
.buf = reader->rbuf + reader->buf_start + 1,
|
||||
};
|
||||
ssize_t match_stack_top = -1;
|
||||
size_t buffer_offset = 0;
|
||||
while (true) {
|
||||
match_ctx.value = match_ctx.node->value;
|
||||
if (match_ctx.value == -1) {
|
||||
// Match character as-is.
|
||||
match_ctx.node = match_ctx.node->children[(unsigned)match_ctx.buf++[0]];
|
||||
if (match_ctx.node == NULL) {
|
||||
break;
|
||||
}
|
||||
} else if (match_ctx.value < -1) {
|
||||
// Match placeholder.
|
||||
start_match:
|
||||
old_node = match_ctx.node;
|
||||
match_ctx.node = match_ctx.node->children[-match_ctx.value];
|
||||
// If other placeholders exist on the same level, save them
|
||||
// to the stack for future retry.
|
||||
if (match_ctx.node->next != NULL) {
|
||||
matcher->match_stack[++match_stack_top] = (struct ctlseqs_match_ctx) {
|
||||
.value = match_ctx.node->next->placeholder,
|
||||
.node = old_node,
|
||||
.buf = match_ctx.buf,
|
||||
};
|
||||
}
|
||||
if (!ctlseqs_fetch(&match_ctx.buf, -match_ctx.value, reader->buffer, &buffer_offset)) {
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
// Successfully matched.
|
||||
return match_ctx.value;
|
||||
}
|
||||
}
|
||||
if (match_stack_top >= 0) {
|
||||
match_ctx = matcher->match_stack[match_stack_top--];
|
||||
goto start_match;
|
||||
}
|
||||
return CTLSEQS_NOMATCH;
|
||||
}
|
||||
|
||||
CTLSEQS_HOT static ssize_t
|
||||
ctlseqs_match(struct ctlseqs_reader *reader, struct ctlseqs_matcher const *matcher)
|
||||
{
|
||||
ssize_t retval = CTLSEQS_PARTIAL;
|
||||
char const *buf = reader->rbuf + reader->buf_start;
|
||||
size_t idx, len = reader->buf_end - reader->buf_start;
|
||||
enum ctlseqs_state state = reader->state;
|
||||
for (idx = 0; idx < len; ++idx) {
|
||||
state = ctlseqs_state_transit(state, buf[idx]);
|
||||
if (state == ctlseqs_state_err) {
|
||||
retval = CTLSEQS_NOSEQ;
|
||||
for (; idx < len; ++idx) {
|
||||
if (buf[idx] == 0x1b) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
reader->buffer[0].num = idx;
|
||||
reader->buffer[1].str = buf;
|
||||
break;
|
||||
}
|
||||
if (state == ctlseqs_state_done) {
|
||||
retval = ctlseqs_match_pattern(reader, matcher);
|
||||
break;
|
||||
}
|
||||
}
|
||||
reader->state = state;
|
||||
reader->buf_start += idx;
|
||||
if (reader->buf_start == reader->buf_end) {
|
||||
reader->buf_start = 0;
|
||||
reader->buf_end = 0;
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
struct ctlseqs_matcher *
|
||||
ctlseqs_matcher_init()
|
||||
{
|
||||
struct ctlseqs_matcher *matcher = malloc(sizeof(struct ctlseqs_matcher));
|
||||
if (CTLSEQS_LIKELY(matcher != NULL)) {
|
||||
*matcher = (struct ctlseqs_matcher) { .node_pool_size = 0 };
|
||||
}
|
||||
return matcher;
|
||||
}
|
||||
|
||||
int
|
||||
ctlseqs_matcher_setopt(struct ctlseqs_matcher *matcher, struct ctlseqs_matcher_opts const *options)
|
||||
{
|
||||
size_t node_pool_idx = 0, max_format_size = 0;
|
||||
if (matcher->node_pool == NULL) {
|
||||
matcher->node_pool_size = sizeof(struct ctlseqs_trie_node) * CTLSEQS_TRIE_INIT_SIZE;
|
||||
matcher->node_pool = malloc(matcher->node_pool_size);
|
||||
if (CTLSEQS_UNLIKELY(matcher->node_pool == NULL)) {
|
||||
return CTLSEQS_NOMEM;
|
||||
}
|
||||
}
|
||||
matcher->root = (struct ctlseqs_trie_node) { .value = -1 };
|
||||
for (size_t i = 0; i < options->npatterns; ++i) {
|
||||
char const *pattern = options->patterns[i];
|
||||
struct ctlseqs_trie_node *node = &matcher->root;
|
||||
for (size_t j = 1; ; ++j) {
|
||||
int ch = pattern[j];
|
||||
if (ch == '\0') {
|
||||
node->value = i;
|
||||
if (j > max_format_size) {
|
||||
max_format_size = j;
|
||||
}
|
||||
break;
|
||||
}
|
||||
struct ctlseqs_trie_node *old_node = node;
|
||||
node = node->children[ch];
|
||||
if (node != NULL) {
|
||||
continue;
|
||||
}
|
||||
if (CTLSEQS_UNLIKELY(++node_pool_idx >= matcher->node_pool_size)) {
|
||||
struct ctlseqs_trie_node *new_pool = realloc(matcher->node_pool, matcher->node_pool_size * 2);
|
||||
if (CTLSEQS_UNLIKELY(new_pool == NULL)) {
|
||||
return CTLSEQS_NOMEM;
|
||||
}
|
||||
matcher->node_pool = new_pool;
|
||||
matcher->node_pool_size *= 2;
|
||||
}
|
||||
old_node->children[ch] = node = &matcher->node_pool[node_pool_idx];
|
||||
*node = (struct ctlseqs_trie_node) { .value = -1 };
|
||||
if (ch < ctlseqs_ph_begin || ch >= ctlseqs_ph_end) {
|
||||
continue;
|
||||
}
|
||||
// Node with multiple placeholders contains negated offset of child
|
||||
// which is the head of the linked list.
|
||||
if (old_node->value < -1) {
|
||||
node->next = old_node->children[-old_node->value];
|
||||
node->next->value = old_node->value;
|
||||
}
|
||||
old_node->value = -ch;
|
||||
}
|
||||
}
|
||||
size_t stack_size = sizeof(struct ctlseqs_match_ctx) * max_format_size;
|
||||
struct ctlseqs_match_ctx *new_stack = realloc(matcher->match_stack, stack_size);
|
||||
if (CTLSEQS_UNLIKELY(new_stack == NULL)) {
|
||||
return CTLSEQS_NOMEM;
|
||||
}
|
||||
matcher->match_stack = new_stack;
|
||||
return CTLSEQS_OK;
|
||||
}
|
||||
|
||||
CTLSEQS_COLD void
|
||||
ctlseqs_matcher_free(struct ctlseqs_matcher *matcher)
|
||||
{
|
||||
if (matcher != NULL) {
|
||||
free(matcher->node_pool);
|
||||
free(matcher);
|
||||
}
|
||||
}
|
||||
|
||||
struct ctlseqs_reader *
|
||||
ctlseqs_reader_init()
|
||||
{
|
||||
struct ctlseqs_reader *reader = malloc(sizeof(struct ctlseqs_reader));
|
||||
if (CTLSEQS_LIKELY(reader != NULL)) {
|
||||
*reader = (struct ctlseqs_reader) { 0 };
|
||||
}
|
||||
return reader;
|
||||
}
|
||||
|
||||
int
|
||||
ctlseqs_reader_setopt(struct ctlseqs_reader *reader, struct ctlseqs_reader_opts const *options)
|
||||
{
|
||||
reader->buffer = options->buffer;
|
||||
size_t readlen = options->maxlen;
|
||||
if (reader->readlen != readlen) {
|
||||
char *rbuf;
|
||||
if (reader->rbuf == NULL) {
|
||||
rbuf = malloc(readlen);
|
||||
} else {
|
||||
rbuf = realloc(reader->rbuf, readlen);
|
||||
}
|
||||
if (rbuf == NULL) {
|
||||
return CTLSEQS_NOMEM;
|
||||
}
|
||||
reader->readlen = readlen;
|
||||
reader->rbuf = rbuf;
|
||||
if (reader->buf_end > reader->readlen) {
|
||||
reader->buf_end = reader->readlen;
|
||||
}
|
||||
}
|
||||
reader->pollfd = (struct pollfd) { .fd = options->fd, .events = POLLIN };
|
||||
reader->no_poll = options->flags & CTLSEQS_READER_NO_POLL;
|
||||
reader->retain_partial = options->flags & CTLSEQS_READER_RETAIN_PARTIAL;
|
||||
return CTLSEQS_OK;
|
||||
}
|
||||
|
||||
CTLSEQS_HOT ssize_t
|
||||
ctlseqs_read(struct ctlseqs_reader *reader, struct ctlseqs_matcher const *matcher, int timeout)
|
||||
{
|
||||
if (reader->buf_start != 0) {
|
||||
ssize_t match_result = ctlseqs_match(reader, matcher);
|
||||
if (match_result >= 0) {
|
||||
return match_result;
|
||||
}
|
||||
}
|
||||
if (!reader->no_poll) {
|
||||
int poll_result = ctlseqs_poll(&reader->pollfd, timeout);
|
||||
if (poll_result < 0) {
|
||||
return poll_result;
|
||||
}
|
||||
}
|
||||
int read_result = ctlseqs_do_read(reader);
|
||||
if (CTLSEQS_UNLIKELY(read_result < 0)) {
|
||||
return read_result;
|
||||
}
|
||||
return ctlseqs_match(reader, matcher);
|
||||
}
|
||||
|
||||
CTLSEQS_COLD void
|
||||
ctlseqs_reader_free(struct ctlseqs_reader *reader)
|
||||
{
|
||||
if (reader != NULL) {
|
||||
free(reader->rbuf);
|
||||
free(reader);
|
||||
}
|
||||
}
|
|
@ -0,0 +1,419 @@
|
|||
/**
|
||||
* ctlseqs.h - helper library for terminal control sequences
|
||||
*
|
||||
* Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
*
|
||||
* This file is part of the ctlseqs library.
|
||||
*
|
||||
* This library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this library. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef CTLSEQS_H_
|
||||
#define CTLSEQS_H_
|
||||
|
||||
#define CTLSEQS_ESC "\x1b" // Escape
|
||||
|
||||
/* C0(7-bit) Control Characters */
|
||||
|
||||
#define CTLSEQS_IND CTLSEQS_ESC "D" // Index
|
||||
#define CTLSEQS_NEL CTLSEQS_ESC "E" // Next Line
|
||||
#define CTLSEQS_HTS CTLSEQS_ESC "H" // Tab Set
|
||||
#define CTLSEQS_RI CTLSEQS_ESC "M" // Reverse Index
|
||||
#define CTLSEQS_SS2 CTLSEQS_ESC "N" // Single Shift Select of G2 Character Set
|
||||
#define CTLSEQS_SS3 CTLSEQS_ESC "O" // Single Shift Select of G3 Character Set
|
||||
#define CTLSEQS_DCS CTLSEQS_ESC "P" // Device Control String
|
||||
#define CTLSEQS_SPA CTLSEQS_ESC "V" // Start of Guarded Area
|
||||
#define CTLSEQS_EPA CTLSEQS_ESC "W" // End of Guarded Area
|
||||
#define CTLSEQS_SOS CTLSEQS_ESC "X" // Start of String
|
||||
#define CTLSEQS_CSI CTLSEQS_ESC "[" // Control Sequence Introducer
|
||||
#define CTLSEQS_ST CTLSEQS_ESC "\\" // String Terminator
|
||||
#define CTLSEQS_OSC CTLSEQS_ESC "]" // Operating System Command
|
||||
#define CTLSEQS_PM CTLSEQS_ESC "^" // Privacy Message
|
||||
#define CTLSEQS_APC CTLSEQS_ESC "_" // Application Program Command
|
||||
|
||||
/* Single Character Functions */
|
||||
|
||||
#define CTLSEQS_ENQ() "\x05" // Return Terminal Status
|
||||
#define CTLSEQS_BEL() "\x07" // Bell
|
||||
#define CTLSEQS_BS() "\x08" // Backspace
|
||||
#define CTLSEQS_TAB() "\x09" // Horizontal Tab
|
||||
#define CTLSEQS_LF() "\x0a" // Line Feed or New Line
|
||||
#define CTLSEQS_VT() "\x0b" // Vertical Tab
|
||||
#define CTLSEQS_FF() "\x0c" // Form Feed or New Page
|
||||
#define CTLSEQS_CR() "\x0d" // Carriage Return
|
||||
#define CTLSEQS_SO() "\x0e" // Switch to Alternate Character Set
|
||||
#define CTLSEQS_SI() "\x0f" // Switch to Standard Character Set
|
||||
#define CTLSEQS_SP() "\x20" // Space
|
||||
|
||||
/* Controls beginning with ESC */
|
||||
|
||||
#define CTLSEQS_S7C1T() CTLSEQS_ESC " F" // 7-bit controls
|
||||
#define CTLSEQS_S8C1T() CTLSEQS_ESC " G" // 8-bit controls
|
||||
#define CTLSEQS_DECDHL_TOP() CTLSEQS_ESC "#3" // DEC double-height line, top half
|
||||
#define CTLSEQS_DECDHL_BOTOM() CTLSEQS_ESC "#4" // DEC double-height line, bottom half
|
||||
#define CTLSEQS_DECSWL() CTLSEQS_ESC "#5" // DEC single-width line
|
||||
#define CTLSEQS_DECDWL() CTLSEQS_ESC "#6" // DEC double-width line
|
||||
#define CTLSEQS_DECALN() CTLSEQS_ESC "#8" // DEC Screen Alignment Test
|
||||
#define CTLSEQS_DECBI() CTLSEQS_ESC "6" // Back Index
|
||||
#define CTLSEQS_DECSC() CTLSEQS_ESC "7" // Save Cursor
|
||||
#define CTLSEQS_DECRC() CTLSEQS_ESC "8" // Restore Cursor
|
||||
#define CTLSEQS_DECFI() CTLSEQS_ESC "9" // Forward Index
|
||||
#define CTLSEQS_DECKPAM() CTLSEQS_ESC "=" // Application Keypad
|
||||
#define CTLSEQS_DECKPNM() CTLSEQS_ESC ">" // Normal Keypad
|
||||
#define CTLSEQS_RIS() CTLSEQS_ESC "c" // Full Reset
|
||||
|
||||
/* Device-Control functions */
|
||||
|
||||
// User-Defined Keys
|
||||
#define CTLSEQS_DECUDK(i1, i2, s) CTLSEQS_DCS i1 ";" i2 "|" s CTLSEQS_ST
|
||||
// Request Status String
|
||||
#define CTLSEQS_DECRQSS(s) CTLSEQS_DCS "$q" s CTLSEQS_ST
|
||||
// Restore presentation status
|
||||
#define CTLSEQS_DECRSPS(i, s) CTLSEQS_DCS i "$t" s CTLSEQS_ST
|
||||
// Request resource values
|
||||
#define CTLSEQS_XTGETXRES(s) CTLSEQS_DCS "+Q" s CTLSEQS_ST
|
||||
// Set Termcap/Terminfo Data
|
||||
#define CTLSEQS_XTSETTCAP(s) CTLSEQS_DCS "+p" s CTLSEQS_ST
|
||||
// Request Termcap/Terminfo String
|
||||
#define CTLSEQS_XTGETTCAP(s) CTLSEQS_DCS "+q" s CTLSEQS_ST
|
||||
|
||||
/* Functions using CSI */
|
||||
|
||||
// Insert $n (Blank) Character(s)
|
||||
#define CTLSEQS_ICH(n) CTLSEQS_CSI n "@"
|
||||
// Shift left $n columns(s)
|
||||
#define CTLSEQS_SL(n) CTLSEQS_CSI n " @"
|
||||
// Cursor Up $n Times
|
||||
#define CTLSEQS_CUU(n) CTLSEQS_CSI n "A"
|
||||
// Shift right $n columns(s)
|
||||
#define CTLSEQS_SR(n) CTLSEQS_CSI n " A"
|
||||
// Cursor Down $n Times
|
||||
#define CTLSEQS_CUD(n) CTLSEQS_CSI n "B"
|
||||
// Cursor Forward $n Times
|
||||
#define CTLSEQS_CUF(n) CTLSEQS_CSI n "C"
|
||||
// Cursor Backward $n Times
|
||||
#define CTLSEQS_CUB(n) CTLSEQS_CSI n "D"
|
||||
// Cursor Next Line $n Times
|
||||
#define CTLSEQS_CNL(n) CTLSEQS_CSI n "E"
|
||||
// Cursor Preceding Line $n Times
|
||||
#define CTLSEQS_CPL(n) CTLSEQS_CSI n "F"
|
||||
// Cursor Character Absolute
|
||||
#define CTLSEQS_CHA(row) CTLSEQS_CSI row "G"
|
||||
// Cursor Position
|
||||
#define CTLSEQS_CUP(row, col) CTLSEQS_CSI row ";" col "H"
|
||||
// Cursor Forward Tabulation $n tab stops
|
||||
#define CTLSEQS_CHT(n) CTLSEQS_CSI n "I"
|
||||
// Erase in Display
|
||||
#define CTLSEQS_ED(i) CTLSEQS_CSI i "J"
|
||||
// Erase in Display
|
||||
#define CTLSEQS_DECSED(i) CTLSEQS_CSI "?" i "J"
|
||||
// Erase in Line
|
||||
#define CTLSEQS_EL(i) CTLSEQS_CSI i "K"
|
||||
// Erase in Line
|
||||
#define CTLSEQS_DECSEL(i) CTLSEQS_CSI "?" i "K"
|
||||
// Insert $n Line(s)
|
||||
#define CTLSEQS_IL(n) CTLSEQS_CSI n "L"
|
||||
// Delete $n Line(s)
|
||||
#define CTLSEQS_DL(n) CTLSEQS_CSI n "M"
|
||||
// Delete $n Character(s)
|
||||
#define CTLSEQS_DCH(n) CTLSEQS_CSI n "P"
|
||||
// Scroll up $n Lines
|
||||
#define CTLSEQS_SU(n) CTLSEQS_CSI n "S"
|
||||
// Set or request graphics attribute
|
||||
#define CTLSEQS_XTSMGRAPHICS(i1, i2, is) CTLSEQS_CSI "?" i1 ";" i2 ";" is "S"
|
||||
// Scroll Down $n Line(s)
|
||||
#define CTLSEQS_SD(n) CTLSEQS_CSI n "T"
|
||||
// Initiate highlight mouse tracking
|
||||
#define CTLSEQS_XTHIMOUSE(f, x, y, fr, lr) CTLSEQS_CSI f ";" x ";" y ";" fr ";" lr "T"
|
||||
// Reset title mode features to default value
|
||||
#define CTLSEQS_XTRMTITLE(is) CTLSEQS_CSI ">" is "T"
|
||||
// Erase $n Character(s)
|
||||
#define CTLSEQS_ECH(n) CTLSEQS_CSI n "X"
|
||||
// Cursor Backward Tabulation $n tab stops
|
||||
#define CTLSEQS_CBT(n) CTLSEQS_CSI n "Z"
|
||||
// Character Position Absolute
|
||||
#define CTLSEQS_HPA(n) CTLSEQS_CSI n "`"
|
||||
// Character Position Relative
|
||||
#define CTLSEQS_HPR(n) CTLSEQS_CSI n "a"
|
||||
// Repeat the preceding graphic character $n times
|
||||
#define CTLSEQS_REP(n) CTLSEQS_CSI n "b"
|
||||
// Send Device Attributes
|
||||
#define CTLSEQS_PRIMARY_DA() CTLSEQS_CSI "c"
|
||||
// Send Device Attributes
|
||||
#define CTLSEQS_TERTIARY_DA() CTLSEQS_CSI "=0c"
|
||||
// Send Device Attributes
|
||||
#define CTLSEQS_SECONDARY_DA() CTLSEQS_CSI ">c"
|
||||
// Line Position Absolute
|
||||
#define CTLSEQS_VPA(row) CTLSEQS_CSI row "d"
|
||||
// Line Position Relative
|
||||
#define CTLSEQS_VPR(rows) CTLSEQS_CSI rows "e"
|
||||
// Horizontal and Vertical Position
|
||||
#define CTLSEQS_HVP(row, col) CTLSEQS_CSI row ";" col "f"
|
||||
// Tab Clear
|
||||
#define CTLSEQS_TBC(i) CTLSEQS_CSI i "g"
|
||||
// Set Mode
|
||||
#define CTLSEQS_SM(i) CTLSEQS_CSI i "h"
|
||||
// DEC Private Mode Set
|
||||
#define CTLSEQS_DECSET(i) CTLSEQS_CSI "?" i "h"
|
||||
// Media Copy
|
||||
#define CTLSEQS_MC(i) CTLSEQS_CSI i "i"
|
||||
// Media Copy, DEC-specific
|
||||
#define CTLSEQS_MC_DEC(i) CTLSEQS_CSI "?" i "i"
|
||||
// Reset Mode
|
||||
#define CTLSEQS_RM(i) CTLSEQS_CSI i "l"
|
||||
// DEC Private Mode Reset
|
||||
#define CTLSEQS_DECRST(i) CTLSEQS_CSI "?" i "l"
|
||||
// Character Attributes
|
||||
#define CTLSEQS_SGR(i) CTLSEQS_CSI i "m"
|
||||
// Set/reset key modifier options
|
||||
#define CTLSEQS_XTMODKEYS(is) CTLSEQS_CSI ">" is "m"
|
||||
// Device Status Report
|
||||
#define CTLSEQS_DSR(i) CTLSEQS_CSI i "n"
|
||||
// Disable key modifier options
|
||||
#define CTLSEQS_XTMODKEYS_DISABLE(i) CTLSEQS_CSI ">" i "n"
|
||||
// Device Status Report
|
||||
#define CTLSEQS_DSR_DEC(i) CTLSEQS_CSI "?" i "n"
|
||||
// Set resource value pointerMode
|
||||
#define CTLSEQS_XTSMPOINTER(i) CTLSEQS_CSI ">" i "p"
|
||||
// Soft terminal reset
|
||||
#define CTLSEQS_DECSTR() CTLSEQS_CSI "!p"
|
||||
// Set conformance level
|
||||
#define CTLSEQS_DECSCL(i1, i2) CTLSEQS_CSI i1 ";" i2 "\"p"
|
||||
// Request ANSI mode
|
||||
#define CTLSEQS_DECRQM_ANSI(i) CTLSEQS_CSI i "$p"
|
||||
// Request DEC private mode
|
||||
#define CTLSEQS_DECRQM(i) CTLSEQS_CSI "?" i "$p"
|
||||
// Report xterm name and version
|
||||
#define CTLSEQS_XTVERSION() CTLSEQS_CSI ">0q"
|
||||
// Load LEDs
|
||||
#define CTLSEQS_DECLL(i) CTLSEQS_CSI i "q"
|
||||
// Set cursor style
|
||||
#define CTLSEQS_DECSCUSR(i) CTLSEQS_CSI i " q"
|
||||
// Select character protection attribute
|
||||
#define CTLSEQS_DECSCA(i) CTLSEQS_CSI i "\"q"
|
||||
// Set Scrolling Region
|
||||
#define CTLSEQS_DECSTBM(top, btm) CTLSEQS_CSI top ";" btm "r"
|
||||
// Restore DEC Private Mode Values
|
||||
#define CTLSEQS_XTRESTORE(is) CTLSEQS_CSI "?" is "r"
|
||||
// Change Attributes in Rectangular Area
|
||||
#define CTLSEQS_DECCARA(t, l, b, r, i) CTLSEQS_CSI t ";" l ";" b ";" r ";" i "$r"
|
||||
// Save cursor
|
||||
#define CTLSEQS_SCOSC() CTLSEQS_CSI "s"
|
||||
// Set left and right margins
|
||||
#define CTLSEQS_DECSLRM(l, r) CTLSEQS_CSI l ";" r "s"
|
||||
// Save DEC Private Mode Values
|
||||
#define CTLSEQS_XTSAVE(is) CTLSEQS_CSI "?" is "s"
|
||||
// Window manipulation
|
||||
#define CTLSEQS_XTWINOPS(is) CTLSEQS_CSI is "t"
|
||||
// Set one or more features of the title modes
|
||||
#define CTLSEQS_XTSMTITLE(is) CTLSEQS_CSI ">" is "t"
|
||||
// Set warning-bell volume
|
||||
#define CTLSEQS_DECSWBV(i) CTLSEQS_CSI i " t"
|
||||
// Reverse Attributes in Rectangular Area
|
||||
#define CTLSEQS_DECRARA(t, l, b, r, i) CTLSEQS_CSI t ";" l ";" b ";" r ";" i "$t"
|
||||
// Restore cursor
|
||||
#define CTLSEQS_SCORC() CTLSEQS_CSI "u"
|
||||
// Set margin-bell volume
|
||||
#define CTLSEQS_DECSMBV(i) CTLSEQS_CSI i " u"
|
||||
// Copy Rectangular Area
|
||||
#define CTLSEQS_DECCRA(t, l, b, r, sp, dt, dl, dp) CTLSEQS_CSI t ";" l ";" b ";" r ";" sp ";" dt ";" dl ";" dp "$v"
|
||||
// Request presentation state report
|
||||
#define CTLSEQS_DECRQPSR(i) CTLSEQS_CSI i "$w"
|
||||
// Enable Filter Rectangle
|
||||
#define CTLSEQS_DECEFR(t, l, b, r) CTLSEQS_CSI t ";" l ";" b ";" r "'w"
|
||||
// Request Terminal Parameters
|
||||
#define CTLSEQS_DECREQTPARM(i) CTLSEQS_CSI i "x"
|
||||
// Select Attribute Change Extent
|
||||
#define CTLSEQS_DECSACE(i) CTLSEQS_CSI i "*x"
|
||||
// Fill Rectangular Area
|
||||
#define CTLSEQS_DECFRA(c, t, l, b, r) CTLSEQS_CSI c ";" t ";" l ";" b ";" r "$x"
|
||||
// Select checksum extension
|
||||
#define CTLSEQS_XTCHECKSUM(i) CTLSEQS_CSI i "#y"
|
||||
// Request Checksum of Rectangular Area
|
||||
#define CTLSEQS_DECRQCRA(id, p, t, l, b, r) CTLSEQS_CSI id ";" p ";" t ";" l ";" b ";" r "*y"
|
||||
// Enable Locator Reporting
|
||||
#define CTLSEQS_DECELR(i1, i2) CTLSEQS_CSI i1 ";" i2 "'z"
|
||||
// Erase Rectangular Area
|
||||
#define CTLSEQS_DECERA(t, l, b, r) CTLSEQS_CSI t ";" l ";" b ";" r "$z"
|
||||
// Select Locator Events
|
||||
#define CTLSEQS_DECSLE(is) CTLSEQS_CSI is "'{"
|
||||
// Push video attributes onto stack
|
||||
#define CTLSEQS_XTPUSHSGR(is) CTLSEQS_CSI is "#{"
|
||||
// Selective Erase Rectangular Area
|
||||
#define CTLSEQS_DECSERA(t, l, b, r) CTLSEQS_CSI t ";" l ";" b ";" r "${"
|
||||
// Report selected graphic rendition
|
||||
#define CTLSEQS_XTREPORTSGR(t, l, b, r) CTLSEQS_CSI t ";" l ";" b ";" r "$|"
|
||||
// Select columns per page
|
||||
#define CTLSEQS_DECSCPP(i) CTLSEQS_CSI i "$|"
|
||||
// Request Locator Position
|
||||
#define CTLSEQS_DECRQLP() CTLSEQS_CSI "'|"
|
||||
// Select $n number of lines per screen
|
||||
#define CTLSEQS_DECSNLS(n) CTLSEQS_CSI n "*|"
|
||||
// Pop video attributes from stack
|
||||
#define CTLSEQS_XTPOPSGR() CTLSEQS_CSI "#}"
|
||||
// Insert $n Column(s)
|
||||
#define CTLSEQS_DECIC(n) CTLSEQS_CSI n "'}"
|
||||
// Delete $n Column(s)
|
||||
#define CTLSEQS_DECDC(n) CTLSEQS_CSI n "'~"
|
||||
|
||||
/* Operating System Commands */
|
||||
|
||||
// Set Text Parameters
|
||||
#define CTLSEQS_OSC_SEQ(i, s) CTLSEQS_OSC i ";" s CTLSEQS_ST
|
||||
|
||||
/* Response messages */
|
||||
|
||||
// DECRQSS response message
|
||||
#define CTLSEQS_RESP_DECRQSS(n, s) CTLSEQS_DCS n "$r" s CTLSEQS_ST
|
||||
// XTGETXRES response message
|
||||
#define CTLSEQS_RESP_XTGETXRES(n, s) CTLSEQS_DCS n "+R" s CTLSEQS_ST
|
||||
// XTGETTCAP response message
|
||||
#define CTLSEQS_RESP_XTGETTCAP(n, s) CTLSEQS_DCS n "+r" s CTLSEQS_ST
|
||||
// Primary DA response message
|
||||
#define CTLSEQS_RESP_PRIMARY_DA(ns) CTLSEQS_CSI ns "c"
|
||||
// Secondary DA response message
|
||||
#define CTLSEQS_RESP_SECONDARY_DA(n1, n2, n3) CTLSEQS_CSI ">" n1 ";" n2 ";" n3 "c"
|
||||
// DECLRP response message
|
||||
#define CTLSEQS_RESP_DECXCPR(n1, n2) CTLSEQS_CSI "?" n1 ";" n2 "R"
|
||||
// DSR response message
|
||||
#define CTLSEQS_RESP_DSR(ns) CTLSEQS_CSI "?" ns "n"
|
||||
// DECRQM response message (ANSI mode)
|
||||
#define CTLSEQS_RESP_DECRQM_ANSI(n1, n2) CTLSEQS_CSI n1 ";" n2 "$y"
|
||||
// DECRQM response message (DEC private mode)
|
||||
#define CTLSEQS_RESP_DECRQM(n1, n2) CTLSEQS_CSI "?" n1 ";" n2 "$y"
|
||||
// XTVERSION response message
|
||||
#define CTLSEQS_RESP_XTVERSION(s) CTLSEQS_DCS ">|" s CTLSEQS_ST
|
||||
// DECCIR response message
|
||||
#define CTLSEQS_RESP_DECCIR(s) CTLSEQS_DCS "1$u" s CTLSEQS_ST
|
||||
// DECTABSR response message
|
||||
#define CTLSEQS_RESP_DECTABSR(s) CTLSEQS_DCS "2$u" s CTLSEQS_ST
|
||||
// DECRQCRA response message
|
||||
#define CTLSEQS_RESP_DECRQCRA(n, s) CTLSEQS_DCS n "!~" s CTLSEQS_ST
|
||||
// DECRQLP response message
|
||||
#define CTLSEQS_RESP_DECRQLP(e, b, row, col, p) CTLSEQS_CSI e ";" b ";" row ";" col ";" p "&w"
|
||||
|
||||
/// PC-Style Function Keys
|
||||
|
||||
#define CTLSEQS_KEY_UP() CTLSEQS_CSI "A" // Up arrow key
|
||||
#define CTLSEQS_KEY_DOWN() CTLSEQS_CSI "B" // Down arrow key
|
||||
#define CTLSEQS_KEY_RIGHT() CTLSEQS_CSI "C" // Right arrow key
|
||||
#define CTLSEQS_KEY_LEFT() CTLSEQS_CSI "D" // Left arrow key
|
||||
#define CTLSEQS_KEY_HOME() CTLSEQS_CSI "H" // Home key
|
||||
#define CTLSEQS_KEY_END() CTLSEQS_CSI "F" // End key
|
||||
#define CTLSEQS_KEY_INSERT() CTLSEQS_CSI "2~" // Insert key
|
||||
#define CTLSEQS_KEY_DELETE() CTLSEQS_CSI "3~" // Delete key
|
||||
#define CTLSEQS_KEY_PGUP() CTLSEQS_CSI "5~" // Page Up key
|
||||
#define CTLSEQS_KEY_PGDN() CTLSEQS_CSI "6~" // Page Down key
|
||||
#define CTLSEQS_KEY_F1() CTLSEQS_SS3 "P" // F1 key
|
||||
#define CTLSEQS_KEY_F2() CTLSEQS_SS3 "Q" // F2 key
|
||||
#define CTLSEQS_KEY_F3() CTLSEQS_SS3 "R" // F3 key
|
||||
#define CTLSEQS_KEY_F4() CTLSEQS_SS3 "S" // F4 key
|
||||
#define CTLSEQS_KEY_F5() CTLSEQS_CSI "15~" // F5 key
|
||||
#define CTLSEQS_KEY_F6() CTLSEQS_CSI "17~" // F6 key
|
||||
#define CTLSEQS_KEY_F7() CTLSEQS_CSI "18~" // F7 key
|
||||
#define CTLSEQS_KEY_F8() CTLSEQS_CSI "19~" // F8 key
|
||||
#define CTLSEQS_KEY_F9() CTLSEQS_CSI "20~" // F9 key
|
||||
#define CTLSEQS_KEY_F10() CTLSEQS_CSI "21~" // F10 key
|
||||
#define CTLSEQS_KEY_F11() CTLSEQS_CSI "23~" // F11 key
|
||||
#define CTLSEQS_KEY_F12() CTLSEQS_CSI "24~" // F12 key
|
||||
|
||||
#ifdef __cplusplus
|
||||
# include <cstddef>
|
||||
#else
|
||||
# include <stddef.h>
|
||||
#endif // __cplusplus
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
/* Placeholders */
|
||||
|
||||
#define CTLSEQS_PH_NUM "\x0e" // CSI Parameter Bytes, numbers only
|
||||
#define CTLSEQS_PH_NUMS "\x0f" // CSI Parameter Bytes, multiple numbers separated by semicolon
|
||||
#define CTLSEQS_PH_STR "\x10" // String, printable characters only
|
||||
#define CTLSEQS_PH_CMDSTR "\x11" // Command String
|
||||
#define CTLSEQS_PH_CSI_PARAM "\x12" // CSI Parameter Bytes
|
||||
#define CTLSEQS_PH_CSI_INTMD "\x13" // CSI Intermediate Bytes
|
||||
#define CTLSEQS_PH_HEXNUM "\x14" // Printable characters representing a hexadecimal number
|
||||
#define CTLSEQS_PH_CHRSTR "\x15" // Character String
|
||||
|
||||
/* Reader option flags */
|
||||
|
||||
#define CTLSEQS_READER_NO_POLL (1 << 0) // Do not poll() before read()
|
||||
#define CTLSEQS_READER_RETAIN_PARTIAL (1 << 1) // Retain data after a partial match
|
||||
|
||||
/* Function return status codes */
|
||||
|
||||
#define CTLSEQS_OK 0
|
||||
#define CTLSEQS_NOMEM -1
|
||||
#define CTLSEQS_ERROR -2
|
||||
#define CTLSEQS_EOF -3
|
||||
#define CTLSEQS_TIMEOUT -4
|
||||
#define CTLSEQS_NOMATCH -5 // Not matching given patterns
|
||||
#define CTLSEQS_PARTIAL -6 // Parially a control sequence
|
||||
#define CTLSEQS_NOSEQ -7 // Not a control sequence
|
||||
#define CTLSEQS_INTR -8 // Interrupted by signal
|
||||
|
||||
struct ctlseqs_matcher;
|
||||
|
||||
struct ctlseqs_reader;
|
||||
|
||||
struct ctlseqs_matcher_opts {
|
||||
char const *const *patterns;
|
||||
size_t npatterns;
|
||||
};
|
||||
|
||||
struct ctlseqs_reader_opts {
|
||||
union ctlseqs_value *buffer;
|
||||
size_t maxlen;
|
||||
int fd;
|
||||
unsigned flags;
|
||||
};
|
||||
|
||||
union ctlseqs_value {
|
||||
char const *str;
|
||||
unsigned long num;
|
||||
};
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
|
||||
using std::size_t;
|
||||
#endif // __cplusplus
|
||||
|
||||
struct ctlseqs_matcher *
|
||||
ctlseqs_matcher_init();
|
||||
|
||||
int
|
||||
ctlseqs_matcher_setopt(struct ctlseqs_matcher *matcher, struct ctlseqs_matcher_opts const *options);
|
||||
|
||||
void
|
||||
ctlseqs_matcher_free(struct ctlseqs_matcher *matcher);
|
||||
|
||||
struct ctlseqs_reader *
|
||||
ctlseqs_reader_init();
|
||||
|
||||
int
|
||||
ctlseqs_reader_setopt(struct ctlseqs_reader *reader, struct ctlseqs_reader_opts const *options);
|
||||
|
||||
ssize_t
|
||||
ctlseqs_read(struct ctlseqs_reader *reader, struct ctlseqs_matcher const *matcher, int timeout);
|
||||
|
||||
void
|
||||
ctlseqs_reader_free(struct ctlseqs_reader *reader);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif // __cplusplus
|
||||
|
||||
#endif // !CTLSEQS_H_
|
|
@ -0,0 +1,172 @@
|
|||
/**
|
||||
* ctlseqs.hh - C++ wrapper for the ctlseqs library
|
||||
*
|
||||
* Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
*
|
||||
* This file is part of the ctlseqs library.
|
||||
*
|
||||
* This library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this library. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef CTLSEQS_HH_
|
||||
#define CTLSEQS_HH_
|
||||
|
||||
#include "ctlseqs.h"
|
||||
|
||||
#include <chrono>
|
||||
#include <new>
|
||||
#include <stdexcept>
|
||||
#include <vector>
|
||||
|
||||
namespace ctlseqs {
|
||||
|
||||
// Control sequence matcher
|
||||
class matcher final {
|
||||
|
||||
ctlseqs_matcher *const matcher_;
|
||||
|
||||
friend class reader;
|
||||
|
||||
public:
|
||||
|
||||
matcher(matcher const &matcher) = delete;
|
||||
|
||||
matcher() : matcher_(ctlseqs_matcher_init()) {
|
||||
if (matcher_ == nullptr) {
|
||||
throw std::bad_alloc();
|
||||
}
|
||||
}
|
||||
|
||||
void patterns(std::vector<char const *> const &patterns) {
|
||||
ctlseqs_matcher_opts opts { patterns.data(), patterns.size() };
|
||||
switch (ctlseqs_matcher_setopt(matcher_, &opts)) {
|
||||
case CTLSEQS_NOMEM:
|
||||
throw std::bad_alloc();
|
||||
}
|
||||
}
|
||||
|
||||
~matcher() {
|
||||
ctlseqs_matcher_free(matcher_);
|
||||
}
|
||||
};
|
||||
|
||||
// Buffer for parsed sequence
|
||||
template <std::size_t N>
|
||||
class buffer final {
|
||||
|
||||
ctlseqs_value buffer_[N];
|
||||
|
||||
public:
|
||||
|
||||
// Get string value
|
||||
char const *str(std::size_t idx) const {
|
||||
return buffer_[idx].str;
|
||||
}
|
||||
|
||||
// Get integer value by index
|
||||
unsigned long num(std::size_t idx) const {
|
||||
return buffer_[idx].num;
|
||||
}
|
||||
};
|
||||
|
||||
// Control sequence reader
|
||||
class reader final {
|
||||
|
||||
ctlseqs_reader *const reader_;
|
||||
|
||||
ctlseqs_value *buffer_;
|
||||
size_t maxlen_;
|
||||
int fd_;
|
||||
bool no_poll_;
|
||||
bool retain_partial_;
|
||||
bool options_modified_;
|
||||
|
||||
ssize_t setopt_and_read(matcher const &matcher, int timeout) {
|
||||
if (options_modified_) {
|
||||
unsigned flags = retain_partial_ * CTLSEQS_READER_RETAIN_PARTIAL | no_poll_ * CTLSEQS_READER_NO_POLL;
|
||||
ctlseqs_reader_opts opts { buffer_, maxlen_, fd_, flags };
|
||||
switch (ctlseqs_reader_setopt(reader_, &opts)) {
|
||||
case CTLSEQS_NOMEM:
|
||||
throw std::bad_alloc();
|
||||
}
|
||||
options_modified_ = false;
|
||||
}
|
||||
ssize_t retval = ctlseqs_read(reader_, matcher.matcher_, timeout);
|
||||
switch (retval) {
|
||||
case CTLSEQS_ERROR:
|
||||
throw std::runtime_error("read failed");
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
public:
|
||||
|
||||
reader(reader const &reader) = delete;
|
||||
|
||||
reader() : reader_(ctlseqs_reader_init()) {
|
||||
if (reader_ == nullptr) {
|
||||
throw std::bad_alloc();
|
||||
}
|
||||
}
|
||||
|
||||
// Set buffer for parsed message
|
||||
template <std::size_t N>
|
||||
void buffer(buffer<N> const &buffer) {
|
||||
buffer_ = reinterpret_cast<ctlseqs_value *>(&buffer);
|
||||
options_modified_ = true;
|
||||
}
|
||||
|
||||
// Set file descriptor to read from
|
||||
void fd(int fd) {
|
||||
fd_ = fd;
|
||||
options_modified_ = true;
|
||||
}
|
||||
|
||||
// Set maximum read size
|
||||
void maxlen(std::size_t maxlen) {
|
||||
maxlen_ = maxlen;
|
||||
options_modified_ = true;
|
||||
}
|
||||
|
||||
// Do not poll() before read()
|
||||
void no_poll(bool enabled = true) {
|
||||
no_poll_ = enabled;
|
||||
options_modified_ = true;
|
||||
}
|
||||
|
||||
// Retain data after a partial match
|
||||
void retain_partial(bool enabled = true) {
|
||||
retain_partial_ = enabled;
|
||||
options_modified_ = true;
|
||||
}
|
||||
|
||||
// Read without timemout
|
||||
ssize_t read(matcher const &matcher) {
|
||||
return setopt_and_read(matcher, -1);
|
||||
}
|
||||
|
||||
// Read with timeout
|
||||
template <typename R, typename P>
|
||||
ssize_t read(matcher const &matcher, std::chrono::duration<R, P> timeout) {
|
||||
int timeout_millis = std::chrono::duration_cast<std::chrono::milliseconds>(timeout).count();
|
||||
return setopt_and_read(matcher.matcher_, timeout_millis);
|
||||
}
|
||||
|
||||
~reader() {
|
||||
ctlseqs_reader_free(reader_);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
#endif // !CTLSEQS_HH_
|
|
@ -0,0 +1,12 @@
|
|||
#
|
||||
# Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
#
|
||||
# Copying and distribution of this file, with or without modification, are
|
||||
# permitted in any medium without royalty, provided the copyright notice and
|
||||
# this notice are preserved. This file is offered as-is, without any warranty.
|
||||
#
|
||||
|
||||
AM_CPPFLAGS = -I$(top_srcdir)/src
|
||||
noinst_PROGRAMS = tcsgrep
|
||||
tcsgrep_SOURCES = tcsgrep.c
|
||||
tcsgrep_LDADD = $(top_srcdir)/src/libctlseqs.la
|
|
@ -0,0 +1,103 @@
|
|||
/**
|
||||
* tcsgrep.c - match input against terminal control sequence patterns
|
||||
*
|
||||
* Copyright (C) 2020 CismonX <admin@cismon.net>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include "ctlseqs.h"
|
||||
|
||||
#define TCSGREP_NINTH_ARG_(a1, a2, a3, a4, a5, a6, a7, a8, a9, ...) a9
|
||||
#define TCSGREP_COUNT_ARGS_(...) TCSGREP_NINTH_ARG_(__VA_ARGS__, 8, 7, 6, 5, 4, 3, 2, 1, 0)
|
||||
|
||||
#define TCSGREP_CONCAT_1_(a1) a1
|
||||
#define TCSGREP_CONCAT_2_(a1, a2) a1 a2
|
||||
#define TCSGREP_CONCAT_3_(a1, a2, a3) a1 a2 a3
|
||||
#define TCSGREP_CONCAT_4_(a1, a2, a3, a4) a1 a2 a3 a4
|
||||
#define TCSGREP_CONCAT_5_(a1, a2, a3, a4, a5) a1 a2 a3 a4 a5
|
||||
#define TCSGREP_CONCAT_6_(a1, a2, a3, a4, a5, a6) a1 a2 a3 a4 a5 a6
|
||||
#define TCSGREP_CONCAT_7_(a1, a2, a3, a4, a5, a6, a7) a1 a2 a3 a4 a5 a6 a7
|
||||
#define TCSGREP_CONCAT_8_(a1, a2, a3, a4, a5, a6, a7, a8) a1 a2 a3 a4 a5 a6 a7 a8
|
||||
|
||||
#define TCSGREP_CONCAT_(nargs) TCSGREP_CONCAT_##nargs##_
|
||||
#define TCSGREP_DEFARGS_(nargs, ...) TCSGREP_CONCAT_(nargs)(__VA_ARGS__)
|
||||
|
||||
#define TCSGREP_DEFSEQ_NOARGS(name) { #name, CTLSEQS_##name(), "" }
|
||||
#define TCSGREP_DEFSEQ(name, ...) \
|
||||
{ #name, CTLSEQS_##name(__VA_ARGS__), TCSGREP_DEFARGS_(TCSGREP_COUNT_ARGS_(__VA_ARGS__), __VA_ARGS__) }
|
||||
|
||||
struct tcsgrep_sequence {
|
||||
char const *name;
|
||||
char const *pattern;
|
||||
char const args[8];
|
||||
};
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
static struct tcsgrep_sequence seqs[] = {
|
||||
TCSGREP_DEFSEQ_NOARGS(S7C1T),
|
||||
TCSGREP_DEFSEQ_NOARGS(S8C1T),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECDHL_TOP),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECDHL_BOTOM),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECSWL),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECDWL),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECALN),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECBI),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECSC),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECRC),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECFI),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECKPAM),
|
||||
TCSGREP_DEFSEQ_NOARGS(DECKPNM),
|
||||
TCSGREP_DEFSEQ_NOARGS(RIS),
|
||||
TCSGREP_DEFSEQ(DECUDK, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM, CTLSEQS_PH_NUMS),
|
||||
TCSGREP_DEFSEQ(DECRQSS, CTLSEQS_PH_STR),
|
||||
TCSGREP_DEFSEQ(DECRSPS, CTLSEQS_PH_NUM, CTLSEQS_PH_STR),
|
||||
TCSGREP_DEFSEQ(XTGETXRES, CTLSEQS_PH_STR),
|
||||
TCSGREP_DEFSEQ(XTSETTCAP, CTLSEQS_PH_STR),
|
||||
TCSGREP_DEFSEQ(XTGETTCAP, CTLSEQS_PH_STR),
|
||||
TCSGREP_DEFSEQ(ICH, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(SL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CUU, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CUD, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CUF, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CUB, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CNL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CPL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CHA, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CUP, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CHT, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(ED, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(DECSED, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(EL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(DECSEL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(IL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(DL, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(DCH, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(SU, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(XTSMGRAPHICS, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM, CTLSEQS_PH_NUMS),
|
||||
TCSGREP_DEFSEQ(SD, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(XTHIMOUSE, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(XTRMTITLE, CTLSEQS_PH_STR),
|
||||
TCSGREP_DEFSEQ(ECH, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(CBT, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(HPA, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(HPR, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ(REP, CTLSEQS_PH_NUM),
|
||||
TCSGREP_DEFSEQ_NOARGS(PRIMARY_DA),
|
||||
TCSGREP_DEFSEQ_NOARGS(TERTIARY_DA),
|
||||
TCSGREP_DEFSEQ_NOARGS(SECONDARY_DA),
|
||||
};
|
||||
}
|
Loading…
Reference in New Issue