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gen_scanf_fmt(): delete function and use snprintf() instead 

To replace "%.*s" with "%s", all we have to do is use snprintf()
to interpolate "%s" into the pattern.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty 2014-01-08 15:43:39 +01:00 committed by Junio C Hamano
parent 84d5633f98
commit 4346663a14
1 changed files with 9 additions and 26 deletions
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35
refs.c
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@ -3334,29 +3334,6 @@ int update_refs(const char *action, const struct ref_update **updates_orig,
return ret;
}
/*
* generate a format suitable for scanf from a ref_rev_parse_rules
* rule, that is replace the "%.*s" spec with a "%s" spec
*/
static void gen_scanf_fmt(char *scanf_fmt, const char *rule)
{
char *spec;
spec = strstr(rule, "%.*s");
if (!spec || strstr(spec + 4, "%.*s"))
die("invalid rule in ref_rev_parse_rules: %s", rule);
/* copy all until spec */
strncpy(scanf_fmt, rule, spec - rule);
scanf_fmt[spec - rule] = '\0';
/* copy new spec */
strcat(scanf_fmt, "%s");
/* copy remaining rule */
strcat(scanf_fmt, spec + 4);
return;
}
char *shorten_unambiguous_ref(const char *refname, int strict)
{
int i;
@ -3364,8 +3341,13 @@ char *shorten_unambiguous_ref(const char *refname, int strict)
static int nr_rules;
char *short_name;
/* pre generate scanf formats from ref_rev_parse_rules[] */
if (!nr_rules) {
/*
* Pre-generate scanf formats from ref_rev_parse_rules[].
* Generate a format suitable for scanf from a
* ref_rev_parse_rules rule by interpolating "%s" at the
* location of the "%.*s".
*/
size_t total_len = 0;
size_t offset = 0;
@ -3378,9 +3360,10 @@ char *shorten_unambiguous_ref(const char *refname, int strict)
offset = 0;
for (i = 0; i < nr_rules; i++) {
assert(offset < total_len);
scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset;
gen_scanf_fmt(scanf_fmts[i], ref_rev_parse_rules[i]);
offset += strlen(ref_rev_parse_rules[i]);
offset += snprintf(scanf_fmts[i], total_len - offset,
ref_rev_parse_rules[i], 2, "%s") + 1;
}
}