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-rw-r--r--color.c170
-rw-r--r--color.h2
2 files changed, 104 insertions, 68 deletions
diff --git a/color.c b/color.c
index 206dc95..b6b0e80 100644
--- a/color.c
+++ b/color.c
@@ -1,6 +1,6 @@
/****************************************************************************
* bfs *
- * Copyright (C) 2015-2019 Tavian Barnes <tavianator@tavianator.com> *
+ * Copyright (C) 2015-2020 Tavian Barnes <tavianator@tavianator.com> *
* *
* Permission to use, copy, modify, and/or distribute this software for any *
* purpose with or without fee is hereby granted. *
@@ -495,13 +495,31 @@ void free_colors(struct colors *colors) {
}
}
-CFILE *cfopen(const char *path, const struct colors *colors) {
+static CFILE *cfalloc(void) {
CFILE *cfile = malloc(sizeof(*cfile));
if (!cfile) {
return NULL;
}
+ cfile->buffer = dstralloc(128);
+ if (!cfile->buffer) {
+ free(cfile);
+ return NULL;
+ }
+
+ cfile->file = NULL;
+ cfile->colors = NULL;
cfile->close = false;
+
+ return cfile;
+}
+
+CFILE *cfopen(const char *path, const struct colors *colors) {
+ CFILE *cfile = cfalloc();
+ if (!cfile) {
+ return NULL;
+ }
+
cfile->file = fopen(path, "wb");
if (!cfile->file) {
cfclose(cfile);
@@ -519,7 +537,7 @@ CFILE *cfopen(const char *path, const struct colors *colors) {
}
CFILE *cfdup(FILE *file, const struct colors *colors) {
- CFILE *cfile = malloc(sizeof(*cfile));
+ CFILE *cfile = cfalloc();
if (!cfile) {
return NULL;
}
@@ -538,12 +556,17 @@ CFILE *cfdup(FILE *file, const struct colors *colors) {
int cfclose(CFILE *cfile) {
int ret = 0;
+
if (cfile) {
+ dstrfree(cfile->buffer);
+
if (cfile->close) {
ret = fclose(cfile->file);
}
+
free(cfile);
}
+
return ret;
}
@@ -659,29 +682,17 @@ error:
}
}
-/** Print a fixed-length string. */
-static int print_strn(const char *str, size_t len, FILE *file) {
- if (fwrite(str, 1, len, file) == len) {
- return 0;
- } else {
- return -1;
- }
-}
-
-/** Print a dstring. */
-static int print_dstr(const char *str, FILE *file) {
- return print_strn(str, dstrlen(str), file);
-}
-
/** Print an ANSI escape sequence. */
-static int print_esc(const struct colors *colors, const char *esc, FILE *file) {
- if (print_dstr(colors->leftcode, file) != 0) {
+static int print_esc(CFILE *cfile, const char *esc) {
+ const struct colors *colors = cfile->colors;
+
+ if (dstrdcat(&cfile->buffer, colors->leftcode) != 0) {
return -1;
}
- if (print_dstr(esc, file) != 0) {
+ if (dstrdcat(&cfile->buffer, esc) != 0) {
return -1;
}
- if (print_dstr(colors->rightcode, file) != 0) {
+ if (dstrdcat(&cfile->buffer, colors->rightcode) != 0) {
return -1;
}
@@ -689,26 +700,28 @@ static int print_esc(const struct colors *colors, const char *esc, FILE *file) {
}
/** Reset after an ANSI escape sequence. */
-static int print_reset(const struct colors *colors, FILE *file) {
+static int print_reset(CFILE *cfile) {
+ const struct colors *colors = cfile->colors;
+
if (colors->endcode) {
- return print_dstr(colors->endcode, file);
+ return dstrdcat(&cfile->buffer, colors->endcode);
} else {
- return print_esc(colors, colors->reset, file);
+ return print_esc(cfile, colors->reset);
}
}
/** Print a string with an optional color. */
-static int print_colored(const struct colors *colors, const char *esc, const char *str, size_t len, FILE *file) {
+static int print_colored(CFILE *cfile, const char *esc, const char *str, size_t len) {
if (esc) {
- if (print_esc(colors, esc, file) != 0) {
+ if (print_esc(cfile, esc) != 0) {
return -1;
}
}
- if (print_strn(str, len, file) != 0) {
+ if (dstrncat(&cfile->buffer, str, len) != 0) {
return -1;
}
if (esc) {
- if (print_reset(colors, file) != 0) {
+ if (print_reset(cfile) != 0) {
return -1;
}
}
@@ -778,7 +791,6 @@ out:
/** Print the directories leading up to a file. */
static int print_dirs_colored(CFILE *cfile, const char *path, const struct BFTW *ftwbuf, enum bfs_stat_flags flags, size_t nameoff) {
const struct colors *colors = cfile->colors;
- FILE *file = cfile->file;
ssize_t broken = first_broken_offset(path, ftwbuf, flags, nameoff);
if (broken < 0) {
@@ -786,7 +798,7 @@ static int print_dirs_colored(CFILE *cfile, const char *path, const struct BFTW
}
if (broken > 0) {
- if (print_colored(colors, colors->directory, path, broken, file) != 0) {
+ if (print_colored(cfile, colors->directory, path, broken) != 0) {
return -1;
}
}
@@ -796,7 +808,7 @@ static int print_dirs_colored(CFILE *cfile, const char *path, const struct BFTW
if (!color) {
color = colors->orphan;
}
- if (print_colored(colors, color, path + broken, nameoff - broken, file) != 0) {
+ if (print_colored(cfile, color, path + broken, nameoff - broken) != 0) {
return -1;
}
}
@@ -806,9 +818,6 @@ static int print_dirs_colored(CFILE *cfile, const char *path, const struct BFTW
/** Print a path with colors. */
static int print_path_colored(CFILE *cfile, const char *path, const struct BFTW *ftwbuf, enum bfs_stat_flags flags) {
- const struct colors *colors = cfile->colors;
- FILE *file = cfile->file;
-
size_t nameoff;
if (path == ftwbuf->path) {
nameoff = ftwbuf->nameoff;
@@ -819,15 +828,15 @@ static int print_path_colored(CFILE *cfile, const char *path, const struct BFTW
print_dirs_colored(cfile, path, ftwbuf, flags, nameoff);
const char *filename = path + nameoff;
- const char *color = file_color(colors, filename, ftwbuf, flags);
- return print_colored(colors, color, filename, strlen(filename), file);
+ const char *color = file_color(cfile->colors, filename, ftwbuf, flags);
+ return print_colored(cfile, color, filename, strlen(filename));
}
/** Print the path to a file with the appropriate colors. */
static int print_path(CFILE *cfile, const struct BFTW *ftwbuf) {
const struct colors *colors = cfile->colors;
if (!colors) {
- return fputs(ftwbuf->path, cfile->file) == EOF ? -1 : 0;
+ return dstrcat(&cfile->buffer, ftwbuf->path);
}
enum bfs_stat_flags flags = ftwbuf->stat_flags;
@@ -851,7 +860,7 @@ static int print_link_target(CFILE *cfile, const struct BFTW *ftwbuf) {
}
if (!cfile->colors) {
- ret = fputs(target, cfile->file) == EOF ? -1 : 0;
+ ret = dstrcat(&cfile->buffer, target);
goto done;
}
@@ -862,24 +871,28 @@ done:
return ret;
}
+/** Format some colored output to the buffer. */
+BFS_FORMATTER(2, 3)
+static int cbuff(CFILE *cfile, const char *format, ...);
+
/** Dump a parsed expression tree, for debugging. */
static int print_expr(CFILE *cfile, const struct expr *expr, bool verbose) {
- if (fputs("(", cfile->file) == EOF) {
+ if (dstrcat(&cfile->buffer, "(") != 0) {
return -1;
}
if (expr->lhs || expr->rhs) {
- if (cfprintf(cfile, "${red}%s${rs}", expr->argv[0]) < 0) {
+ if (cbuff(cfile, "${red}%s${rs}", expr->argv[0]) < 0) {
return -1;
}
} else {
- if (cfprintf(cfile, "${blu}%s${rs}", expr->argv[0]) < 0) {
+ if (cbuff(cfile, "${blu}%s${rs}", expr->argv[0]) < 0) {
return -1;
}
}
for (size_t i = 1; i < expr->argc; ++i) {
- if (cfprintf(cfile, " ${bld}%s${rs}", expr->argv[i]) < 0) {
+ if (cbuff(cfile, " ${bld}%s${rs}", expr->argv[i]) < 0) {
return -1;
}
}
@@ -890,14 +903,14 @@ static int print_expr(CFILE *cfile, const struct expr *expr, bool verbose) {
rate = 100.0*expr->successes/expr->evaluations;
time = (1.0e9*expr->elapsed.tv_sec + expr->elapsed.tv_nsec)/expr->evaluations;
}
- if (cfprintf(cfile, " [${ylw}%zu${rs}/${ylw}%zu${rs}=${ylw}%g%%${rs}; ${ylw}%gns${rs}]",
- expr->successes, expr->evaluations, rate, time)) {
+ if (cbuff(cfile, " [${ylw}%zu${rs}/${ylw}%zu${rs}=${ylw}%g%%${rs}; ${ylw}%gns${rs}]",
+ expr->successes, expr->evaluations, rate, time)) {
return -1;
}
}
if (expr->lhs) {
- if (fputs(" ", cfile->file) == EOF) {
+ if (dstrcat(&cfile->buffer, " ") != 0) {
return -1;
}
if (print_expr(cfile, expr->lhs, verbose) != 0) {
@@ -906,7 +919,7 @@ static int print_expr(CFILE *cfile, const struct expr *expr, bool verbose) {
}
if (expr->rhs) {
- if (fputs(" ", cfile->file) == EOF) {
+ if (dstrcat(&cfile->buffer, " ") != 0) {
return -1;
}
if (print_expr(cfile, expr->rhs, verbose) != 0) {
@@ -914,29 +927,20 @@ static int print_expr(CFILE *cfile, const struct expr *expr, bool verbose) {
}
}
- if (fputs(")", cfile->file) == EOF) {
+ if (dstrcat(&cfile->buffer, ")") != 0) {
return -1;
}
return 0;
}
-int cfprintf(CFILE *cfile, const char *format, ...) {
- va_list args;
- va_start(args, format);
- int ret = cvfprintf(cfile, format, args);
- va_end(args);
- return ret;
-}
-
-int cvfprintf(CFILE *cfile, const char *format, va_list args) {
+static int cvbuff(CFILE *cfile, const char *format, va_list args) {
const struct colors *colors = cfile->colors;
- FILE *file = cfile->file;
int error = errno;
for (const char *i = format; *i; ++i) {
size_t verbatim = strcspn(i, "%$");
- if (fwrite(i, 1, verbatim, file) != verbatim) {
+ if (dstrncat(&cfile->buffer, i, verbatim) != 0) {
return -1;
}
@@ -945,31 +949,31 @@ int cvfprintf(CFILE *cfile, const char *format, va_list args) {
case '%':
switch (*++i) {
case '%':
- if (fputc('%', file) == EOF) {
+ if (dstrapp(&cfile->buffer, '%') != 0) {
return -1;
}
break;
case 'c':
- if (fputc(va_arg(args, int), file) == EOF) {
+ if (dstrapp(&cfile->buffer, va_arg(args, int)) != 0) {
return -1;
}
break;
case 'd':
- if (fprintf(file, "%d", va_arg(args, int)) < 0) {
+ if (dstrcatf(&cfile->buffer, "%d", va_arg(args, int)) != 0) {
return -1;
}
break;
case 'g':
- if (fprintf(file, "%g", va_arg(args, double)) < 0) {
+ if (dstrcatf(&cfile->buffer, "%g", va_arg(args, double)) != 0) {
return -1;
}
break;
case 's':
- if (fputs(va_arg(args, const char *), file) == EOF) {
+ if (dstrcat(&cfile->buffer, va_arg(args, const char *)) != 0) {
return -1;
}
break;
@@ -979,13 +983,13 @@ int cvfprintf(CFILE *cfile, const char *format, va_list args) {
if (*i != 'u') {
goto invalid;
}
- if (fprintf(file, "%zu", va_arg(args, size_t)) < 0) {
+ if (dstrcatf(&cfile->buffer, "%zu", va_arg(args, size_t)) != 0) {
return -1;
}
break;
case 'm':
- if (fputs(strerror(error), file) == EOF) {
+ if (dstrcat(&cfile->buffer, strerror(error)) != 0) {
return -1;
}
break;
@@ -1029,7 +1033,7 @@ int cvfprintf(CFILE *cfile, const char *format, va_list args) {
case '$':
switch (*++i) {
case '$':
- if (fputc('$', file) == EOF) {
+ if (dstrapp(&cfile->buffer, '$') != 0) {
return -1;
}
break;
@@ -1055,7 +1059,7 @@ int cvfprintf(CFILE *cfile, const char *format, va_list args) {
goto invalid;
}
if (*esc) {
- if (print_esc(colors, *esc, file) != 0) {
+ if (print_esc(cfile, *esc) != 0) {
return -1;
}
}
@@ -1072,7 +1076,6 @@ int cvfprintf(CFILE *cfile, const char *format, va_list args) {
default:
return 0;
}
-
}
return 0;
@@ -1082,3 +1085,34 @@ invalid:
errno = EINVAL;
return -1;
}
+
+static int cbuff(CFILE *cfile, const char *format, ...) {
+ va_list args;
+ va_start(args, format);
+ int ret = cvbuff(cfile, format, args);
+ va_end(args);
+ return ret;
+}
+
+int cvfprintf(CFILE *cfile, const char *format, va_list args) {
+ assert(dstrlen(cfile->buffer) == 0);
+
+ int ret = -1;
+ if (cvbuff(cfile, format, args) == 0) {
+ size_t len = dstrlen(cfile->buffer);
+ if (fwrite(cfile->buffer, 1, len, cfile->file) == len) {
+ ret = 0;
+ }
+ }
+
+ dstresize(&cfile->buffer, 0);
+ return ret;
+}
+
+int cfprintf(CFILE *cfile, const char *format, ...) {
+ va_list args;
+ va_start(args, format);
+ int ret = cvfprintf(cfile, format, args);
+ va_end(args);
+ return ret;
+}
diff --git a/color.h b/color.h
index fabac13..55e89ff 100644
--- a/color.h
+++ b/color.h
@@ -56,6 +56,8 @@ typedef struct CFILE {
FILE *file;
/** The color table to use, if any. */
const struct colors *colors;
+ /** A buffer for colored formatting. */
+ char *buffer;
/** Whether to close the underlying stream. */
bool close;
} CFILE;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 07:44:35 +0000