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authorGravatar Steven Schubiger <stsc@refcnt.org>2018-01-28 22:52:04 +0100
committerGravatar Steven Schubiger <stsc@refcnt.org>2018-01-28 22:52:04 +0100
commitbcd256396593896a9e2c287afead4bbfbd65a437 (patch)
treeb90689fd6501c0da52267b5b1e31f172451cd20b /colorize.c
parent50c854a0abbb5a741c35b718bb1bf04eb84985d5 (diff)
downloadcolorize-bcd256396593896a9e2c287afead4bbfbd65a437.tar.gz
colorize-bcd256396593896a9e2c287afead4bbfbd65a437.tar.bz2
First draft of --omit-color-empty
Diffstat (limited to 'colorize.c')
-rw-r--r--colorize.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/colorize.c b/colorize.c
index 012a376..ba5926a 100644
--- a/colorize.c
+++ b/colorize.c
@@ -205,18 +205,20 @@ enum {
OPT_CLEAN,
OPT_CLEAN_ALL,
OPT_EXCLUDE_RANDOM,
+ OPT_OMIT_COLOR_EMPTY,
OPT_HELP,
OPT_VERSION
};
static int opt_type;
static const struct option long_opts[] = {
- { "attr", required_argument, &opt_type, OPT_ATTR },
- { "clean", no_argument, &opt_type, OPT_CLEAN },
- { "clean-all", no_argument, &opt_type, OPT_CLEAN_ALL },
- { "exclude-random", required_argument, &opt_type, OPT_EXCLUDE_RANDOM },
- { "help", no_argument, &opt_type, OPT_HELP },
- { "version", no_argument, &opt_type, OPT_VERSION },
- { NULL, 0, NULL, 0 },
+ { "attr", required_argument, &opt_type, OPT_ATTR },
+ { "clean", no_argument, &opt_type, OPT_CLEAN },
+ { "clean-all", no_argument, &opt_type, OPT_CLEAN_ALL },
+ { "exclude-random", required_argument, &opt_type, OPT_EXCLUDE_RANDOM },
+ { "omit-color-empty", no_argument, &opt_type, OPT_OMIT_COLOR_EMPTY },
+ { "help", no_argument, &opt_type, OPT_HELP },
+ { "version", no_argument, &opt_type, OPT_VERSION },
+ { NULL, 0, NULL, 0 },
};
enum attr_type {
@@ -242,6 +244,7 @@ static void **vars_list;
static bool clean;
static bool clean_all;
+static bool omit_color_empty;
static char attr[MAX_ATTRIBUTE_CHARS + 1];
static char *exclude;
@@ -267,7 +270,7 @@ static bool get_next_char (char *, const char **, FILE *, bool *);
static void save_char (char, char **, size_t *, size_t *);
static void find_color_entries (struct color_name **, const struct color **);
static void find_color_entry (const struct color_name *, unsigned int, const struct color **);
-static void print_line (const char *, const struct color **, const char * const, unsigned int);
+static void print_line (const char *, const struct color **, const char * const, unsigned int, bool);
static void print_clean (const char *);
static bool is_esc (const char *);
static const char *get_end_of_esc (const char *);
@@ -413,6 +416,9 @@ process_opts (int argc, char **argv)
vfprintf_fail (formats[FMT_GENERIC], "--exclude-random switch must be provided a plain color");
break;
}
+ case OPT_OMIT_COLOR_EMPTY:
+ omit_color_empty = true;
+ break;
case OPT_HELP:
PRINT_HELP_EXIT ();
case OPT_VERSION:
@@ -888,6 +894,7 @@ read_print_stream (const char *attr, const struct color **colors, const char *fi
line = buf;
while ((eol = strpbrk (line, "\n\r")))
{
+ const bool has_text = (eol > line);
const char *p;
flags &= ~(CR|LF);
if (*eol == '\r')
@@ -902,13 +909,14 @@ read_print_stream (const char *attr, const struct color **colors, const char *fi
vfprintf_fail (formats[FMT_FILE], file, "unrecognized line ending");
p = eol + SKIP_LINE_ENDINGS (flags);
*eol = '\0';
- print_line (attr, colors, line, flags);
+ print_line (attr, colors, line, flags,
+ omit_color_empty ? has_text : true);
line = p;
}
if (feof (stream))
{
if (*line != '\0')
- print_line (attr, colors, line, 0);
+ print_line (attr, colors, line, 0, true);
}
else if (*line != '\0')
{
@@ -916,7 +924,7 @@ read_print_stream (const char *attr, const struct color **colors, const char *fi
if ((clean || clean_all) && (p = strrchr (line, '\033')))
merge_print_line (line, p, stream);
else
- print_line (attr, colors, line, 0);
+ print_line (attr, colors, line, 0, true);
}
}
}
@@ -1123,12 +1131,13 @@ find_color_entry (const struct color_name *color_name, unsigned int index, const
}
static void
-print_line (const char *attr, const struct color **colors, const char *const line, unsigned int flags)
+print_line (const char *attr, const struct color **colors, const char *const line, unsigned int flags, bool emit_colors)
{
/* --clean[-all] */
if (clean || clean_all)
print_clean (line);
- else
+ /* skip for --omit-color-empty? */
+ else if (emit_colors)
{
/* Foreground color code is guaranteed to be set when background color code is present. */
if (colors[BACKGROUND] && colors[BACKGROUND]->code)