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abbrev cleanup: use symbolic constants

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The minimum length of abbreviated object name was hardcoded in
different places to be 4, risking inconsistencies in the future.
Also there were three different "default abbreviation
precision".  Use two C preprocessor symbols to clean up this
mess.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-01-25 01:03:18 -08:00
parent 6b94f1e404
commit 46a6c2620b
5 changed files with 7 additions and 8 deletions
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3
cache.h
View file

@ -221,6 +221,9 @@ extern int has_pack_file(const unsigned char *sha1);
extern int has_pack_index(const unsigned char *sha1);
/* Convert to/from hex/sha1 representation */
#define MINIMUM_ABBREV 4
#define DEFAULT_ABBREV 7
extern int get_sha1(const char *str, unsigned char *sha1);
extern int get_sha1_hex(const char *hex, unsigned char *sha1);
extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */

3
describe.c
View file

@ -11,7 +11,6 @@ static const char describe_usage[] =
static int all = 0; /* Default to annotated tags only */
static int tags = 0; /* But allow any tags if --tags is specified */
#define DEFAULT_ABBREV 8 /* maybe too many */
static int abbrev = DEFAULT_ABBREV;
static int names = 0, allocs = 0;
@ -155,7 +154,7 @@ int main(int argc, char **argv)
tags = 1;
else if (!strncmp(arg, "--abbrev=", 9)) {
abbrev = strtoul(arg + 9, NULL, 10);
if (abbrev < 4 || 40 <= abbrev)
if (abbrev < MINIMUM_ABBREV || 40 <= abbrev)
abbrev = DEFAULT_ABBREV;
}
else

4
diff.c
View file

@ -723,7 +723,7 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
if (memcmp(one->sha1, two->sha1, 20)) {
char one_sha1[41];
int abbrev = o->full_index ? 40 : DIFF_DEFAULT_INDEX_ABBREV;
int abbrev = o->full_index ? 40 : DEFAULT_ABBREV;
memcpy(one_sha1, sha1_to_hex(one->sha1), 41);
len += snprintf(msg + len, sizeof(msg) - len,
@ -846,7 +846,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (!strcmp(arg, "--find-copies-harder"))
options->find_copies_harder = 1;
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DIFF_DEFAULT_ABBREV;
options->abbrev = DEFAULT_ABBREV;
else if (!strncmp(arg, "--abbrev=", 9))
options->abbrev = strtoul(arg + 9, NULL, 10);
else

3
diff.h
View file

@ -88,9 +88,6 @@ extern int diff_setup_done(struct diff_options *);
#define DIFF_PICKAXE_ALL 1
#define DIFF_DEFAULT_INDEX_ABBREV 7 /* hex digits */
#define DIFF_DEFAULT_ABBREV 7 /* hex digits */
extern void diffcore_std(struct diff_options *);
extern void diffcore_std_no_resolve(struct diff_options *);

2
sha1_name.c
View file

@ -155,7 +155,7 @@ static int get_short_sha1(const char *name, int len, unsigned char *sha1,
char canonical[40];
unsigned char res[20];
if (len < 4)
if (len < MINIMUM_ABBREV)
return -1;
memset(res, 0, 20);
memset(canonical, 'x', 40);