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Diffstat (limited to 'color.c')
-rw-r--r--color.c46
1 files changed, 31 insertions, 15 deletions
diff --git a/color.c b/color.c
index a5b6581..81c2676 100644
--- a/color.c
+++ b/color.c
@@ -160,27 +160,34 @@ int color_parse(const char *value, char *dst)
return color_parse_mem(value, strlen(value), dst);
}
+void color_set(char *dst, const char *color_bytes)
+{
+ xsnprintf(dst, COLOR_MAXLEN, "%s", color_bytes);
+}
+
/*
* Write the ANSI color codes for "c" to "out"; the string should
* 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, const struct color *c, char type)
+static char *color_output(char *out, int len, const struct color *c, char type)
{
switch (c->type) {
case COLOR_UNSPECIFIED:
case COLOR_NORMAL:
break;
case COLOR_ANSI:
+ if (len < 2)
+ die("BUG: color parsing ran out of space");
*out++ = type;
*out++ = '0' + c->value;
break;
case COLOR_256:
- out += sprintf(out, "%c8;5;%d", type, c->value);
+ out += xsnprintf(out, len, "%c8;5;%d", type, c->value);
break;
case COLOR_RGB:
- out += sprintf(out, "%c8;2;%d;%d;%d", type,
- c->red, c->green, c->blue);
+ out += xsnprintf(out, len, "%c8;2;%d;%d;%d", type,
+ c->red, c->green, c->blue);
break;
}
return out;
@@ -195,12 +202,13 @@ int color_parse_mem(const char *value, int value_len, char *dst)
{
const char *ptr = value;
int len = value_len;
+ char *end = dst + COLOR_MAXLEN;
unsigned int attr = 0;
struct color fg = { COLOR_UNSPECIFIED };
struct color bg = { COLOR_UNSPECIFIED };
if (!strncasecmp(value, "reset", len)) {
- strcpy(dst, GIT_COLOR_RESET);
+ xsnprintf(dst, end - dst, GIT_COLOR_RESET);
return 0;
}
@@ -239,12 +247,19 @@ int color_parse_mem(const char *value, int value_len, char *dst)
goto bad;
}
+#undef OUT
+#define OUT(x) do { \
+ if (dst == end) \
+ die("BUG: color parsing ran out of space"); \
+ *dst++ = (x); \
+} while(0)
+
if (attr || !color_empty(&fg) || !color_empty(&bg)) {
int sep = 0;
int i;
- *dst++ = '\033';
- *dst++ = '[';
+ OUT('\033');
+ OUT('[');
for (i = 0; attr; i++) {
unsigned bit = (1 << i);
@@ -252,27 +267,28 @@ int color_parse_mem(const char *value, int value_len, char *dst)
continue;
attr &= ~bit;
if (sep++)
- *dst++ = ';';
- dst += sprintf(dst, "%d", i);
+ OUT(';');
+ dst += xsnprintf(dst, end - dst, "%d", i);
}
if (!color_empty(&fg)) {
if (sep++)
- *dst++ = ';';
+ OUT(';');
/* foreground colors are all in the 3x range */
- dst = color_output(dst, &fg, '3');
+ dst = color_output(dst, end - dst, &fg, '3');
}
if (!color_empty(&bg)) {
if (sep++)
- *dst++ = ';';
+ OUT(';');
/* background colors are all in the 4x range */
- dst = color_output(dst, &bg, '4');
+ dst = color_output(dst, end - dst, &bg, '4');
}
- *dst++ = 'm';
+ OUT('m');
}
- *dst = 0;
+ OUT(0);
return 0;
bad:
return error(_("invalid color value: %.*s"), value_len, value);
+#undef OUT
}
int git_config_colorbool(const char *var, const char *value)