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| author | Julius Plenz <plenz@cis.fu-berlin.de> | 2011-04-07 12:59:24 +0200 |
|---|---|---|
| committer | Lars Hjemli <hjemli@gmail.com> | 2011-06-20 20:42:19 +0200 |
| commit | d711de55280c3c9c10cfda4e24c8f3b3015217b2 (patch) | |
| tree | 2e4a7d8dcaeefb4259756a16be04c40dee7ed49c | |
| parent | b0d72da02850abaf4be65ff220774a457c214651 (diff) | |
| download | cgit-d711de55280c3c9c10cfda4e24c8f3b3015217b2.tar.gz cgit-d711de55280c3c9c10cfda4e24c8f3b3015217b2.tar.xz | |
guess default branch from HEAD
This is a saner alternative than hardcoding the default branch to be
"master". The add_repo() function will now check for a symbolic ref in
repo_path/HEAD. If there is a suitable one, overwrite repo->defbranch
with it. Note that you'll need to strip the newline from the file (->
len-17).
If HEAD is a symbolic link pointing directly to a branch below
refs/heads/, do a readlink() instead to find the ref name.
Signed-off-by: Julius Plenz <plenz@cis.fu-berlin.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
| -rw-r--r-- | cgitrc.5.txt | 3 | ||||
| -rw-r--r-- | scan-tree.c | 36 |
2 files changed, 38 insertions, 1 deletions
diff --git a/cgitrc.5.txt b/cgitrc.5.txt index 4721c1e..c2c5680 100644 --- a/cgitrc.5.txt +++ b/cgitrc.5.txt @@ -377,7 +377,8 @@ repo.commit-filter:: repo.defbranch:: The name of the default branch for this repository. If no such branch exists in the repository, the first branch name (when sorted) is used - as default instead. Default value: "master". + as default instead. Default value: branch pointed to by HEAD, or + "master" if there is no suitable HEAD. repo.desc:: The value to show as repository description. Default value: none. diff --git a/scan-tree.c b/scan-tree.c index 378d795..a429a9f 100644 --- a/scan-tree.c +++ b/scan-tree.c @@ -68,6 +68,39 @@ static char *xstrrchr(char *s, char *from, int c) return from < s ? NULL : from; } +static char *guess_defbranch(const char *repo_path) +{ + int fd, len; + char buffer[256]; + char *ref_start; + char *head; + + head = fmt("%s/HEAD", repo_path); + fd = open(head, O_RDONLY); + if (fd == -1) + return xstrdup("master"); + + memset(buffer, 0, sizeof(buffer)); + len = read_in_full(fd, buffer, sizeof(buffer)-1); + close(fd); + + if(!memcmp(buffer, "ref: refs/heads/", 16)) + return xstrndup(buffer+16, len-17); + + if(strlen(buffer) == 41) { + /* probably contains a SHA1 sum */ + memset(buffer, 0, sizeof(buffer)); + if(readlink(head, buffer, sizeof(buffer)-1)) { + ref_start = memmem(buffer, sizeof(buffer)-1, "refs/heads/", 11); + if(ref_start) + return xstrdup(ref_start+11); + } + } + + return xstrdup("master"); +} + + static void add_repo(const char *base, const char *path, repo_config_fn fn) { struct stat st; @@ -105,6 +138,9 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn) *p = '\0'; repo->name = repo->url; repo->path = xstrdup(path); + + repo->defbranch = guess_defbranch(repo->path); + while (!owner) { if ((pwd = getpwuid(st.st_uid)) == NULL) { fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n", |