config.c: introduce 'git_config_color' to parse ANSI colors

In preparation for adding `--type=color` to the `git-config(1)` builtin, let's introduce a color parsing utility, `git_config_color` in a similar fashion to `git_config_<type>`. Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Taylor Blau committed Apr 9, 2018 at 17:18 UTC 6d2f9acc0f6c2df2b75ac69aee9077d7ea4eb2b5
2 files changed +11
config.c
+10
@@ -16,6 +16,7 @@
16 #include "string-list.h"
17 #include "utf8.h"
18 #include "dir.h"
19 +#include "color.h"
20
21 struct config_source {
22 struct config_source *prev;
@@ -1000,6 +1001,15 @@ int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *
1001 return 0;
1002 }
1003
1004 +int git_config_color(char *dest, const char *var, const char *value)
1005 +{
1006 + if (!value)
1007 + return config_error_nonbool(var);
1008 + if (color_parse(value, dest) < 0)
1009 + return -1;
1010 + return 0;
1011 +}
1012 +
1013 static int git_default_core_config(const char *var, const char *value)
1014 {
1015 /* This needs a better name */
config.h
+1
@@ -59,6 +59,7 @@ extern int git_config_bool(const char *, const char *);
59 extern int git_config_string(const char **, const char *, const char *);
60 extern int git_config_pathname(const char **, const char *, const char *);
61 extern int git_config_expiry_date(timestamp_t *, const char *, const char *);
62 +extern int git_config_color(char *, const char *, const char *);
63 extern int git_config_set_in_file_gently(const char *, const char *, const char *);
64 extern void git_config_set_in_file(const char *, const char *, const char *);
65 extern int git_config_set_gently(const char *, const char *);