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Remove `dprintf()` usage.

This commit is contained in:
CismonX 2021-01-22 12:39:41 +08:00
parent 6e8fd91103
commit f9238f7e26
Signed by: cismonx
GPG Key ID: 3094873E29A482FB
4 changed files with 35 additions and 36 deletions
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2
INSTALL.md
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@ -12,7 +12,7 @@ this notice are preserved. This file is offered as-is, without any warranty.
This is the recommended way to use this library.
Copy [ctlseqs.h](src/ctlseqs.h) and [ctlseqs.c](src/ctlseqs.c) to your project and build it alongside with other code. Requires an ISO C99 and POSIX.1-2008 compliant C implementation.
Copy [ctlseqs.h](src/ctlseqs.h) and [ctlseqs.c](src/ctlseqs.c) to your project and build it alongside with other code. Requires an ISO C99 and POSIX.1-2001 compliant C implementation.
## Build and Install From Source

5
configure.ac
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@ -41,7 +41,7 @@ AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
# Checks for library functions.
AC_CHECK_FUNCS([dprintf memset strtoul])
AC_CHECK_FUNCS([memset strtoul])
# Specify libtool library version.
m4_define([CTLSEQS_LT_CURRENT], [0])
@ -49,8 +49,5 @@ m4_define([CTLSEQS_LT_REVISION], [0])
m4_define([CTLSEQS_LT_AGE], [0])
AC_SUBST([CTLSEQS_LT_VERSION], [CTLSEQS_LT_CURRENT:CTLSEQS_LT_REVISION:CTLSEQS_LT_AGE])
# Assume that POSIX.1-2008 is supported.
AC_DEFINE([_POSIX_C_SOURCE], [200809L], [Feature test macro for POSIX.1-2008])
AC_CONFIG_FILES([Makefile doc/Makefile man/Makefile src/Makefile tests/Makefile examples/Makefile])
AC_OUTPUT

62
examples/sixdraw.c
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@ -63,6 +63,8 @@ struct sixdraw_ctx {
struct termios termios;
union ctlseqs_value result[64];
char const *prog_name;
FILE* out_file;
FILE* err_file;
struct ctlseqs_matcher *matcher;
struct ctlseqs_reader *reader;
bool has_termios;
@ -90,7 +92,7 @@ print_error(struct sixdraw_ctx const *ctx, char const *format, ...)
va_start(args, format);
vsnprintf(msg, 1024, format, args);
va_end(args);
dprintf(ctx->out_fd, "%s: [error] %s.\n", ctx->prog_name, msg);
fprintf(ctx->err_file, "%s: [error] %s.\n", ctx->prog_name, msg);
}
static void
@ -101,20 +103,20 @@ terminate(struct sixdraw_ctx *ctx)
// Restore cursor status.
if (ctx->hide_cursor) {
dprintf(ctx->out_fd, CTLSEQS_DECSET("%d"), DECTCEM);
fprintf(ctx->out_file, CTLSEQS_DECSET("%d"), DECTCEM);
}
// Restore normal screen buffer.
if (ctx->alt_scrbuf) {
dprintf(ctx->out_fd, CTLSEQS_DECRST("%d"), ALT_SCRBUF);
fprintf(ctx->out_file, CTLSEQS_DECRST("%d"), ALT_SCRBUF);
}
// Restore original mouse modes.
if (ctx->btnev_tracking) {
dprintf(ctx->out_fd, CTLSEQS_DECRST("%d"), BTN_EVENT_TRACKING);
fprintf(ctx->out_file, CTLSEQS_DECRST("%d"), BTN_EVENT_TRACKING);
}
if (ctx->sgr_pixelmode) {
dprintf(ctx->out_fd, CTLSEQS_DECRST("%d"), SGR_MOUSE_PIXELMODE);
fprintf(ctx->out_file, CTLSEQS_DECRST("%d"), SGR_MOUSE_PIXELMODE);
}
// Restore original terminal modes.
@ -148,7 +150,7 @@ decrqm(struct sixdraw_ctx *ctx, unsigned mode, char const *name)
{
ssize_t retval;
union ctlseqs_value *result = ctx->result;
dprintf(ctx->out_fd, CTLSEQS_DECRQM("%d"), mode);
fprintf(ctx->out_file, CTLSEQS_DECRQM("%d"), mode);
do {
retval = ctlseqs_read(ctx->reader, ctx->matcher, ctx->timeout);
} while (retval == CTLSEQS_PARTIAL);
@ -173,7 +175,7 @@ print_sixel_dot(struct sixdraw_ctx *ctx, unsigned x, unsigned y)
// Move cursor.
unsigned row = y / ctx->ch_height + 1;
unsigned col = x / ctx->ch_width + 1;
dprintf(ctx->out_fd, CTLSEQS_CUP("%d", "%d"), row, col);
fprintf(ctx->out_file, CTLSEQS_CUP("%d", "%d"), row, col);
// Build sixel sequence.
row = y % ctx->ch_height;
@ -182,13 +184,7 @@ print_sixel_dot(struct sixdraw_ctx *ctx, unsigned x, unsigned y)
seq_size += sprintf(sixel_seq + seq_size, "%.*s!%u?%c" CTLSEQS_ST,
row / 6, "------------------------", col, (1 << row % 6) + 0x3F);
// Output sixel sequence.
for (ssize_t nbytes; seq_size > 0; seq_size -= nbytes) {
nbytes = write(ctx->out_fd, sixel_seq, seq_size);
if (nbytes < 0) {
break;
}
}
fwrite(sixel_seq, seq_size, 1, ctx->out_file);
}
static bool
@ -196,6 +192,8 @@ init(struct sixdraw_ctx *ctx, int argc, char **argv)
{
*ctx = (struct sixdraw_ctx) {
.prog_name = argc > 0 ? argv[0] : "sixdraw",
.out_file = stdout,
.err_file = stderr,
.in_fd = STDIN_FILENO,
.out_fd = STDOUT_FILENO,
.timeout = DEFAULT_TIMEOUT_MILLIS,
@ -281,7 +279,7 @@ prepare(struct sixdraw_ctx *ctx)
}
ctx->has_termios = true;
// Set STDIN flags to nonblocking.
// Set STDIN flags to nonblocking, and disable output buffering.
int flags = fcntl(ctx->in_fd, F_GETFL);
if (flags == -1) {
print_error(ctx, "failed to get file status flags");
@ -291,6 +289,10 @@ prepare(struct sixdraw_ctx *ctx)
print_error(ctx, "failed to set file status flags");
return false;
}
if (setvbuf(stdout, NULL, _IONBF, 0) != 0) {
print_error(ctx, "failed to disable output buffering");
return false;
}
// Get initial terminal window size.
if (!get_winsize(ctx)) {
@ -298,7 +300,7 @@ prepare(struct sixdraw_ctx *ctx)
}
// Check terminal support for sixel graphics and DEC locator.
dprintf(ctx->out_fd, CTLSEQS_PRIMARY_DA());
fprintf(ctx->out_file, CTLSEQS_PRIMARY_DA());
ssize_t retval;
do {
retval = ctlseqs_read(ctx->reader, ctx->matcher, ctx->timeout);
@ -325,16 +327,7 @@ prepare(struct sixdraw_ctx *ctx)
}
ctx->hide_cursor = result[1].num == DECRQM_SET;
if (ctx->hide_cursor) {
dprintf(ctx->out_fd, CTLSEQS_DECRST("%d"), DECTCEM);
}
// Switch to alternate screen buffer.
if (!decrqm(ctx, ALT_SCRBUF, "screen buffer")) {
return false;
}
ctx->alt_scrbuf = result[1].num == DECRQM_RST;
if (ctx->alt_scrbuf) {
dprintf(ctx->out_fd, CTLSEQS_DECSET("%d"), ALT_SCRBUF);
fprintf(ctx->out_file, CTLSEQS_DECRST("%d"), DECTCEM);
}
// Enable button event tracking mode.
@ -343,7 +336,7 @@ prepare(struct sixdraw_ctx *ctx)
}
ctx->btnev_tracking = result[1].num == DECRQM_RST;
if (ctx->btnev_tracking) {
dprintf(ctx->out_fd, CTLSEQS_DECSET("%d"), BTN_EVENT_TRACKING);
fprintf(ctx->out_file, CTLSEQS_DECSET("%d"), BTN_EVENT_TRACKING);
}
// Enable SGR mouse pixel mode.
@ -352,7 +345,16 @@ prepare(struct sixdraw_ctx *ctx)
}
ctx->sgr_pixelmode = result[1].num == DECRQM_RST;
if (ctx->sgr_pixelmode) {
dprintf(ctx->out_fd, CTLSEQS_DECSET("%d"), SGR_MOUSE_PIXELMODE);
fprintf(ctx->out_file, CTLSEQS_DECSET("%d"), SGR_MOUSE_PIXELMODE);
}
// Switch to alternate screen buffer.
if (!decrqm(ctx, ALT_SCRBUF, "screen buffer")) {
return false;
}
ctx->alt_scrbuf = result[1].num == DECRQM_RST;
if (ctx->alt_scrbuf) {
fprintf(ctx->out_file, CTLSEQS_DECSET("%d"), ALT_SCRBUF);
}
// Build the immutable part of sixel sequence.
@ -367,9 +369,9 @@ prepare(struct sixdraw_ctx *ctx)
static bool
draw(struct sixdraw_ctx *ctx)
{
dprintf(ctx->out_fd, CTLSEQS_CUP("%d", "1") "Canvas size: %ux%u. Line color: #%06X.",
fprintf(ctx->out_file, CTLSEQS_CUP("%d", "1") "Canvas size: %ux%u. Line color: #%06X.",
ctx->rows - 1, ctx->canvas_width, ctx->canvas_height, ctx->line_color);
dprintf(ctx->out_fd, CTLSEQS_CUP("%d", "1") "Usage: Draw with mouse. Press Ctrl+C to exit.", ctx->rows);
fprintf(ctx->out_file, CTLSEQS_CUP("%d", "1") "Usage: Draw with mouse. Press Ctrl+C to exit.", ctx->rows);
union ctlseqs_value *result = ctx->result;
while (true) {

2
tests/tcsgrep.c
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@ -73,7 +73,7 @@ struct tcsgrep_ctx {
static inline void
print_error(struct tcsgrep_ctx const *ctx, char const *msg)
{
dprintf(STDERR_FILENO, "%s: [error] %s.\n", ctx->prog_name, msg);
fprintf(stderr, "%s: [error] %s.\n", ctx->prog_name, msg);
}
static inline bool