On Mon, Jan 19, 2009 at 01:13:30AM -0800, Junio C Hamano wrote:
> * jk/color-parse (Sat Jan 17 10:38:46 2009 -0500) 2 commits
> + expand --pretty=format color options
> + color: make it easier for non-config to parse color specs
I posted a revised version of 1/2 based on René's work, but it looks
like you have the original. So here it is on top of what's in next.
-- >8 --
From: René Scharfe <rene.scharfe@xxxxxxxxxxxxxx>
optimize color_parse_mem
Commit 5ef8d77a implemented color_parse_mem, a function for
parsing colors from a non-NUL-terminated string, by simply
allocating a new NUL-terminated string and calling
color_parse. This had a small but measurable speed impact on
a user format that used the advanced color parsing. E.g.,
# uses quick parsing
$ time ./git log --pretty=tformat:'%Credfoo%Creset' >/dev/null
real 0m0.673s
user 0m0.652s
sys 0m0.016s
# uses color_parse_mem
$ time ./git log --pretty=tformat:'%C(red)foo%C(reset)' >/dev/null
real 0m0.692s
user 0m0.660s
sys 0m0.032s
This patch implements color_parse_mem as the primary
function, with color_parse as a wrapper for strings. This
gives comparable timings to the first case above.
Original patch by René. Commit message and debugging by Jeff
King.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
color.c | 38 +++++++++++++++++++++-----------------
1 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/color.c b/color.c
index 54a3da1..915d7a9 100644
--- a/color.c
+++ b/color.c
@@ -41,29 +41,40 @@ static int parse_attr(const char *name, int len)
void color_parse(const char *value, const char *var, char *dst)
{
+ color_parse_mem(value, strlen(value), var, dst);
+}
+
+void color_parse_mem(const char *value, int value_len, const char *var,
+ char *dst)
+{
const char *ptr = value;
+ int len = value_len;
int attr = -1;
int fg = -2;
int bg = -2;
- if (!strcasecmp(value, "reset")) {
+ if (!strncasecmp(value, "reset", len)) {
strcpy(dst, "\033[m");
return;
}
/* [fg [bg]] [attr] */
- while (*ptr) {
+ while (len > 0) {
const char *word = ptr;
- int val, len = 0;
+ int val, wordlen = 0;
- while (word[len] && !isspace(word[len]))
- len++;
+ while (len > 0 && !isspace(word[wordlen])) {
+ wordlen++;
+ len--;
+ }
- ptr = word + len;
- while (*ptr && isspace(*ptr))
+ ptr = word + wordlen;
+ while (len > 0 && isspace(*ptr)) {
ptr++;
+ len--;
+ }
- val = parse_color(word, len);
+ val = parse_color(word, wordlen);
if (val >= -1) {
if (fg == -2) {
fg = val;
@@ -75,7 +86,7 @@ void color_parse(const char *value, const char *var, char *dst)
}
goto bad;
}
- val = parse_attr(word, len);
+ val = parse_attr(word, wordlen);
if (val < 0 || attr != -1)
goto bad;
attr = val;
@@ -115,7 +126,7 @@ void color_parse(const char *value, const char *var, char *dst)
*dst = 0;
return;
bad:
- die("bad color value '%s' for variable '%s'", value, var);
+ die("bad color value '%.*s' for variable '%s'", value_len, value, var);
}
int git_config_colorbool(const char *var, const char *value, int stdout_is_tty)
@@ -191,10 +202,3 @@ int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
va_end(args);
return r;
}
-
-void color_parse_mem(const char *value, int len, const char *var, char *dst)
-{
- char *tmp = xmemdupz(value, len);
- color_parse(tmp, var, dst);
- free(tmp);
-}
--
1.6.1.335.g0366b.dirty
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