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Teach refspec to transform destination reference to source reference

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This commit is contained in:
Jameson Miller 2013-02-07 14:53:52 -05:00
parent 2e3e8c889b
commit db4bb4158f
3 changed files with 38 additions and 10 deletions
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11
include/git2/refspec.h
View File

@ -72,6 +72,17 @@ GIT_EXTERN(int) git_refspec_dst_matches(const git_refspec *refspec, const char *
*/
GIT_EXTERN(int) git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, const char *name);
/**
* Transform a target reference to its source reference following the refspec's rules
*
* @param out where to store the source reference name
* @param outlen the size of the `out` buffer
* @param spec the refspec
* @param name the name of the reference to transform
* @return 0, GIT_EBUFS or another error
*/
GIT_EXTERN(int) git_refspec_rtransform(char *out, size_t outlen, const git_refspec *spec, const char *name);
GIT_END_DECL
#endif

22
src/refspec.c
View File

@ -167,11 +167,11 @@ int git_refspec_dst_matches(const git_refspec *refspec, const char *refname)
return (p_fnmatch(refspec->dst, refname, 0) == 0);
}
int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, const char *name)
static int refspec_transform_internal(char *out, size_t outlen, const char *from, const char *to, const char *name)
{
size_t baselen, namelen;
baselen = strlen(spec->dst);
baselen = strlen(to);
if (outlen <= baselen) {
giterr_set(GITERR_INVALID, "Reference name too long");
return GIT_EBUFS;
@ -181,8 +181,8 @@ int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, con
* No '*' at the end means that it's mapped to one specific local
* branch, so no actual transformation is needed.
*/
if (spec->dst[baselen - 1] != '*') {
memcpy(out, spec->dst, baselen + 1); /* include '\0' */
if (to[baselen - 1] != '*') {
memcpy(out, to, baselen + 1); /* include '\0' */
return 0;
}
@ -190,7 +190,7 @@ int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, con
baselen--;
/* skip the prefix, -1 is for the '*' */
name += strlen(spec->src) - 1;
name += strlen(from) - 1;
namelen = strlen(name);
@ -199,12 +199,22 @@ int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, con
return GIT_EBUFS;
}
memcpy(out, spec->dst, baselen);
memcpy(out, to, baselen);
memcpy(out + baselen, name, namelen + 1);
return 0;
}
int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, const char *name)
{
return refspec_transform_internal(out, outlen, spec->src, spec->dst, name);
}
int git_refspec_rtransform(char *out, size_t outlen, const git_refspec *spec, const char *name)
{
return refspec_transform_internal(out, outlen, spec->dst, spec->src, name);
}
static int refspec_transform(git_buf *out, const char *from, const char *to, const char *name)
{
if (git_buf_sets(out, to) < 0)

11
tests-clar/network/remotes.c
View File

@ -173,13 +173,20 @@ void test_network_remotes__fnmatch(void)
void test_network_remotes__transform(void)
{
char ref[1024];
char ref[1024] = {0};
memset(ref, 0x0, sizeof(ref));
cl_git_pass(git_refspec_transform(ref, sizeof(ref), _refspec, "refs/heads/master"));
cl_assert_equal_s(ref, "refs/remotes/test/master");
}
void test_network_remotes__transform_destination_to_source(void)
{
char ref[1024] = {0};
cl_git_pass(git_refspec_rtransform(ref, sizeof(ref), _refspec, "refs/remotes/test/master"));
cl_assert_equal_s(ref, "refs/heads/master");
}
void test_network_remotes__transform_r(void)
{
git_buf buf = GIT_BUF_INIT;