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authorJunio C Hamano <gitster@pobox.com>2020-02-25 19:18:32 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-02-25 19:18:32 (GMT)
commit87f17d790d8e350e8df1101476882f7751581ee0 (patch)
treebe3e2150edd96e5bcf2a64005f75854c8ae075c3
parentd0038f4b31d6ab1f0602a4d3c19e35c5004175fa (diff)
parentc444f032e43611b95612882cd06380866f8da0fd (diff)
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Merge branch 'es/bright-colors'
The basic 7 colors learned the brighter counterparts (e.g. "brightred"). * es/bright-colors: color.c: alias RGB colors 8-15 to aixterm colors color.c: support bright aixterm colors color.c: refactor color_output arguments
-rw-r--r--Documentation/config.txt4
-rw-r--r--color.c75
-rwxr-xr-xt/t4026-color.sh12
3 files changed, 69 insertions, 22 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 83e7bba..08b13ba 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -263,7 +263,9 @@ color::
+
The basic colors accepted are `normal`, `black`, `red`, `green`, `yellow`,
`blue`, `magenta`, `cyan` and `white`. The first color given is the
-foreground; the second is the background.
+foreground; the second is the background. All the basic colors except
+`normal` have a bright variant that can be speficied by prefixing the
+color with `bright`, like `brightred`.
+
Colors may also be given as numbers between 0 and 255; these use ANSI
256-color mode (but note that not all terminals may support this). If
diff --git a/color.c b/color.c
index ebb222e..64f52a4 100644
--- a/color.c
+++ b/color.c
@@ -24,6 +24,14 @@ const char *column_colors_ansi[] = {
GIT_COLOR_RESET,
};
+enum {
+ COLOR_BACKGROUND_OFFSET = 10,
+ COLOR_FOREGROUND_ANSI = 30,
+ COLOR_FOREGROUND_RGB = 38,
+ COLOR_FOREGROUND_256 = 38,
+ COLOR_FOREGROUND_BRIGHT_ANSI = 90,
+};
+
/* Ignore the RESET at the end when giving the size */
const int column_colors_ansi_max = ARRAY_SIZE(column_colors_ansi) - 1;
@@ -61,15 +69,38 @@ static int get_hex_color(const char *in, unsigned char *out)
return 0;
}
-static int parse_color(struct color *out, const char *name, int len)
+/*
+ * If an ANSI color is recognized in "name", fill "out" and return 0.
+ * Otherwise, leave out unchanged and return -1.
+ */
+static int parse_ansi_color(struct color *out, const char *name, int len)
{
/* Positions in array must match ANSI color codes */
static const char * const color_names[] = {
"black", "red", "green", "yellow",
"blue", "magenta", "cyan", "white"
};
- char *end;
int i;
+ int color_offset = COLOR_FOREGROUND_ANSI;
+
+ if (strncasecmp(name, "bright", 6) == 0) {
+ color_offset = COLOR_FOREGROUND_BRIGHT_ANSI;
+ name += 6;
+ len -= 6;
+ }
+ for (i = 0; i < ARRAY_SIZE(color_names); i++) {
+ if (match_word(name, len, color_names[i])) {
+ out->type = COLOR_ANSI;
+ out->value = i + color_offset;
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int parse_color(struct color *out, const char *name, int len)
+{
+ char *end;
long val;
/* First try the special word "normal"... */
@@ -89,12 +120,8 @@ static int parse_color(struct color *out, const char *name, int len)
}
/* Then pick from our human-readable color names... */
- for (i = 0; i < ARRAY_SIZE(color_names); i++) {
- if (match_word(name, len, color_names[i])) {
- out->type = COLOR_ANSI;
- out->value = i;
- return 0;
- }
+ if (parse_ansi_color(out, name, len) == 0) {
+ return 0;
}
/* And finally try a literal 256-color-mode number */
@@ -109,10 +136,15 @@ static int parse_color(struct color *out, const char *name, int len)
else if (val < 0) {
out->type = COLOR_NORMAL;
return 0;
- /* Rewrite low numbers as more-portable standard colors. */
+ /* Rewrite 0-7 as more-portable standard colors. */
} else if (val < 8) {
out->type = COLOR_ANSI;
- out->value = val;
+ out->value = val + COLOR_FOREGROUND_ANSI;
+ return 0;
+ /* Rewrite 8-15 as more-portable aixterm colors. */
+ } else if (val < 16) {
+ out->type = COLOR_ANSI;
+ out->value = val - 8 + COLOR_FOREGROUND_BRIGHT_ANSI;
return 0;
} else if (val < 256) {
out->type = COLOR_256;
@@ -166,23 +198,26 @@ int color_parse(const char *value, char *dst)
* already have the ANSI escape code in it. "out" should have enough
* space in it to fit any color.
*/
-static char *color_output(char *out, int len, const struct color *c, char type)
+static char *color_output(char *out, int len, const struct color *c, int background)
{
+ int offset = 0;
+
+ if (background)
+ offset = COLOR_BACKGROUND_OFFSET;
switch (c->type) {
case COLOR_UNSPECIFIED:
case COLOR_NORMAL:
break;
case COLOR_ANSI:
- if (len < 2)
- BUG("color parsing ran out of space");
- *out++ = type;
- *out++ = '0' + c->value;
+ out += xsnprintf(out, len, "%d", c->value + offset);
break;
case COLOR_256:
- out += xsnprintf(out, len, "%c8;5;%d", type, c->value);
+ out += xsnprintf(out, len, "%d;5;%d", COLOR_FOREGROUND_256 + offset,
+ c->value);
break;
case COLOR_RGB:
- out += xsnprintf(out, len, "%c8;2;%d;%d;%d", type,
+ out += xsnprintf(out, len, "%d;2;%d;%d;%d",
+ COLOR_FOREGROUND_RGB + offset,
c->red, c->green, c->blue);
break;
}
@@ -279,14 +314,12 @@ int color_parse_mem(const char *value, int value_len, char *dst)
if (!color_empty(&fg)) {
if (sep++)
OUT(';');
- /* foreground colors are all in the 3x range */
- dst = color_output(dst, end - dst, &fg, '3');
+ dst = color_output(dst, end - dst, &fg, 0);
}
if (!color_empty(&bg)) {
if (sep++)
OUT(';');
- /* background colors are all in the 4x range */
- dst = color_output(dst, end - dst, &bg, '4');
+ dst = color_output(dst, end - dst, &bg, 1);
}
OUT('m');
}
diff --git a/t/t4026-color.sh b/t/t4026-color.sh
index 671e951..c0b642c 100755
--- a/t/t4026-color.sh
+++ b/t/t4026-color.sh
@@ -30,6 +30,14 @@ test_expect_success 'attribute before color name' '
color "bold red" "[1;31m"
'
+test_expect_success 'aixterm bright fg color' '
+ color "brightred" "[91m"
+'
+
+test_expect_success 'aixterm bright bg color' '
+ color "green brightblue" "[32;104m"
+'
+
test_expect_success 'color name before attribute' '
color "red bold" "[1;31m"
'
@@ -74,6 +82,10 @@ test_expect_success '0-7 are aliases for basic ANSI color names' '
color "0 7" "[30;47m"
'
+test_expect_success '8-15 are aliases for aixterm color names' '
+ color "12 13" "[94;105m"
+'
+
test_expect_success '256 colors' '
color "254 bold 255" "[1;38;5;254;48;5;255m"
'