diff options
| -rw-r--r-- | Documentation/git-show-branch.txt | 23 | ||||
| -rw-r--r-- | show-branch.c | 76 |
2 files changed, 84 insertions, 15 deletions
diff --git a/Documentation/git-show-branch.txt b/Documentation/git-show-branch.txt index c6c97b21c..304101d81 100644 --- a/Documentation/git-show-branch.txt +++ b/Documentation/git-show-branch.txt @@ -7,18 +7,29 @@ git-show-branch - Show branches and their commits. SYNOPSIS -------- -'git-show-branch [--all] [--heads] [--tags] [--more=<n> | --list | --independent | --merge-base] [--no-name | --sha1-name] <reference>...' +'git-show-branch [--all] [--heads] [--tags] [--more=<n> | --list | --independent | --merge-base] [--no-name | --sha1-name] [<rev> | <glob>]...' DESCRIPTION ----------- -Shows the head commits from the named <reference> (or all refs under -$GIT_DIR/refs/heads), and displays concise list of commit logs -to show their relationship semi-visually. + +Shows the commit ancestry graph starting from the commits named +with <rev>s or <globs>s (or all refs under $GIT_DIR/refs/heads +and/or $GIT_DIR/refs/tags) semi-visually. + +It cannot show more than 29 branches and commits at a time. + OPTIONS ------- -<reference>:: - Name of the reference under $GIT_DIR/refs/. +<rev>:: + Arbitrary extended SHA1 expression (see `git-rev-parse`) + that typically names a branch HEAD or a tag. + +<glob>:: + A glob pattern that matches branch or tag names under + $GIT_DIR/refs. For example, if you have many topic + branches under $GIT_DIR/refs/heads/topic, giving + `topic/*` would show all of them. --all --heads --tags:: Show all refs under $GIT_DIR/refs, $GIT_DIR/refs/heads, diff --git a/show-branch.c b/show-branch.c index d8808eefc..bff690d98 100644 --- a/show-branch.c +++ b/show-branch.c @@ -1,4 +1,5 @@ #include <stdlib.h> +#include <fnmatch.h> #include "cache.h" #include "commit.h" #include "refs.h" @@ -332,6 +333,39 @@ static int append_tag_ref(const char *refname, const unsigned char *sha1) return append_ref(refname + 5, sha1); } +static const char *match_ref_pattern = NULL; +static int match_ref_slash = 0; +static int count_slash(const char *s) +{ + int cnt = 0; + while (*s) + if (*s++ == '/') + cnt++; + return cnt; +} + +static int append_matching_ref(const char *refname, const unsigned char *sha1) +{ + /* we want to allow pattern hold/<asterisk> to show all + * branches under refs/heads/hold/, and v0.99.9? to show + * refs/tags/v0.99.9a and friends. + */ + const char *tail; + int slash = count_slash(refname); + for (tail = refname; *tail && match_ref_slash < slash; ) + if (*tail++ == '/') + slash--; + if (!*tail) + return 0; + if (fnmatch(match_ref_pattern, tail, 0)) + return 0; + if (!strncmp("refs/heads/", refname, 11)) + return append_head_ref(refname, sha1); + if (!strncmp("refs/tags/", refname, 10)) + return append_tag_ref(refname, sha1); + return append_ref(refname, sha1); +} + static void snarf_refs(int head, int tag) { if (head) { @@ -400,6 +434,27 @@ static int show_independent(struct commit **rev, return 0; } +static void append_one_rev(const char *av) +{ + unsigned char revkey[20]; + if (!get_sha1(av, revkey)) { + append_ref(av, revkey); + return; + } + if (strchr(av, '*') || strchr(av, '?')) { + /* glob style match */ + int saved_matches = ref_name_cnt; + match_ref_pattern = av; + match_ref_slash = count_slash(av); + for_each_ref(append_matching_ref); + if (saved_matches == ref_name_cnt && + ref_name_cnt < MAX_REVS) + error("no matching refs with %s", av); + return; + } + die("bad sha1 reference %s", av); +} + int main(int ac, char **av) { struct commit *rev[MAX_REVS], *commit; @@ -458,17 +513,20 @@ int main(int ac, char **av) if (all_heads + all_tags) snarf_refs(all_heads, all_tags); - while (0 < ac) { - unsigned char revkey[20]; - if (get_sha1(*av, revkey)) - die("bad sha1 reference %s", *av); - append_ref(*av, revkey); - ac--; av++; + if (ac) { + while (0 < ac) { + append_one_rev(*av); + ac--; av++; + } } - - /* If still no revs, then add heads */ - if (!ref_name_cnt) + else { + /* If no revs given, then add heads */ snarf_refs(1, 0); + } + if (!ref_name_cnt) { + fprintf(stderr, "No revs to be shown.\n"); + exit(0); + } for (num_rev = 0; ref_name[num_rev]; num_rev++) { unsigned char revkey[20]; |