X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-show-branch.c;h=b54c410e1486587786a9454ebc7ceef4bfffc0af;hb=8860fd42fcf5a7853f7d7c2198793183320293ff;hp=2a1b848f6c169f09cb168d12e6bb5033795b8be2;hpb=182a8dabd5f5f646608f3857f10f3ac18c3d1445;p=git.git diff --git a/builtin-show-branch.c b/builtin-show-branch.c index 2a1b848f6..b54c410e1 100644 --- a/builtin-show-branch.c +++ b/builtin-show-branch.c @@ -1,22 +1,24 @@ -#include -#include #include "cache.h" #include "commit.h" #include "refs.h" #include "builtin.h" static const char show_branch_usage[] = -"git-show-branch [--sparse] [--current] [--all] [--heads] [--tags] [--topo-order] [--more=count | --list | --independent | --merge-base ] [--topics] [...]"; +"git-show-branch [--sparse] [--current] [--all] [--remotes] [--topo-order] [--more=count | --list | --independent | --merge-base ] [--topics] [...] | --reflog[=n[,b]] "; +static const char show_branch_usage_reflog[] = +"--reflog is incompatible with --all, --remotes, --independent or --merge-base"; -static int default_num = 0; -static int default_alloc = 0; -static const char **default_arg = NULL; +static int default_num; +static int default_alloc; +static const char **default_arg; #define UNINTERESTING 01 #define REV_SHIFT 2 #define MAX_REVS (FLAG_BITS - REV_SHIFT) /* should not exceed bits_per_int - REV_SHIFT */ +#define DEFAULT_REFLOG 4 + static struct commit *interesting(struct commit_list *list) { while (list) { @@ -163,7 +165,7 @@ static void name_commits(struct commit_list *list, en += sprintf(en, "^"); else en += sprintf(en, "^%d", nth); - name_commit(p, strdup(newname), 0); + name_commit(p, xstrdup(newname), 0); i++; name_first_parent_chain(p); } @@ -261,7 +263,7 @@ static void show_one_commit(struct commit *commit, int no_name) struct commit_name *name = commit->util; if (commit->object.parsed) pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0, - pretty, sizeof(pretty), 0, NULL, NULL); + pretty, sizeof(pretty), 0, NULL, NULL, 0); else strcpy(pretty, "(unavailable)"); if (!strncmp(pretty, "[PATCH] ", 8)) @@ -346,30 +348,33 @@ static void sort_ref_range(int bottom, int top) compare_ref_name); } -static int append_ref(const char *refname, const unsigned char *sha1) +static int append_ref(const char *refname, const unsigned char *sha1, + int allow_dups) { struct commit *commit = lookup_commit_reference_gently(sha1, 1); int i; if (!commit) return 0; - /* Avoid adding the same thing twice */ - for (i = 0; i < ref_name_cnt; i++) - if (!strcmp(refname, ref_name[i])) - return 0; + if (!allow_dups) { + /* Avoid adding the same thing twice */ + for (i = 0; i < ref_name_cnt; i++) + if (!strcmp(refname, ref_name[i])) + return 0; + } if (MAX_REVS <= ref_name_cnt) { fprintf(stderr, "warning: ignoring %s; " "cannot handle more than %d refs\n", refname, MAX_REVS); return 0; } - ref_name[ref_name_cnt++] = strdup(refname); + ref_name[ref_name_cnt++] = xstrdup(refname); ref_name[ref_name_cnt] = NULL; return 0; } -static int append_head_ref(const char *refname, const unsigned char *sha1) +static int append_head_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) { unsigned char tmp[20]; int ofs = 11; @@ -378,16 +383,30 @@ static int append_head_ref(const char *refname, const unsigned char *sha1) /* If both heads/foo and tags/foo exists, get_sha1 would * get confused. */ - if (get_sha1(refname + ofs, tmp) || memcmp(tmp, sha1, 20)) + if (get_sha1(refname + ofs, tmp) || hashcmp(tmp, sha1)) + ofs = 5; + return append_ref(refname + ofs, sha1, 0); +} + +static int append_remote_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) +{ + unsigned char tmp[20]; + int ofs = 13; + if (strncmp(refname, "refs/remotes/", ofs)) + return 0; + /* If both heads/foo and tags/foo exists, get_sha1 would + * get confused. + */ + if (get_sha1(refname + ofs, tmp) || hashcmp(tmp, sha1)) ofs = 5; - return append_ref(refname + ofs, sha1); + return append_ref(refname + ofs, sha1, 0); } -static int append_tag_ref(const char *refname, const unsigned char *sha1) +static int append_tag_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) { if (strncmp(refname, "refs/tags/", 10)) return 0; - return append_ref(refname + 5, sha1); + return append_ref(refname + 5, sha1, 0); } static const char *match_ref_pattern = NULL; @@ -401,7 +420,7 @@ static int count_slash(const char *s) return cnt; } -static int append_matching_ref(const char *refname, const unsigned char *sha1) +static int append_matching_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) { /* we want to allow pattern hold/ to show all * branches under refs/heads/hold/, and v0.99.9? to show @@ -417,41 +436,39 @@ static int append_matching_ref(const char *refname, const unsigned char *sha1) if (fnmatch(match_ref_pattern, tail, 0)) return 0; if (!strncmp("refs/heads/", refname, 11)) - return append_head_ref(refname, sha1); + return append_head_ref(refname, sha1, flag, cb_data); if (!strncmp("refs/tags/", refname, 10)) - return append_tag_ref(refname, sha1); - return append_ref(refname, sha1); + return append_tag_ref(refname, sha1, flag, cb_data); + return append_ref(refname, sha1, 0); } -static void snarf_refs(int head, int tag) +static void snarf_refs(int head, int remotes) { if (head) { int orig_cnt = ref_name_cnt; - for_each_ref(append_head_ref); + for_each_ref(append_head_ref, NULL); sort_ref_range(orig_cnt, ref_name_cnt); } - if (tag) { + if (remotes) { int orig_cnt = ref_name_cnt; - for_each_ref(append_tag_ref); + for_each_ref(append_remote_ref, NULL); sort_ref_range(orig_cnt, ref_name_cnt); } } -static int rev_is_head(char *head_path, int headlen, char *name, +static int rev_is_head(char *head, int headlen, char *name, unsigned char *head_sha1, unsigned char *sha1) { - int namelen; - if ((!head_path[0]) || - (head_sha1 && sha1 && memcmp(head_sha1, sha1, 20))) - return 0; - namelen = strlen(name); - if ((headlen < namelen) || - memcmp(head_path + headlen - namelen, name, namelen)) + if ((!head[0]) || + (head_sha1 && sha1 && hashcmp(head_sha1, sha1))) return 0; - if (headlen == namelen || - head_path[headlen - namelen - 1] == '/') - return 1; - return 0; + if (!strncmp(head, "refs/heads/", 11)) + head += 11; + if (!strncmp(name, "refs/heads/", 11)) + name += 11; + else if (!strncmp(name, "heads/", 6)) + name += 6; + return !strcmp(head, name); } static int show_merge_base(struct commit_list *seen, int num_rev) @@ -495,7 +512,7 @@ static void append_one_rev(const char *av) { unsigned char revkey[20]; if (!get_sha1(av, revkey)) { - append_ref(av, revkey); + append_ref(av, revkey, 0); return; } if (strchr(av, '*') || strchr(av, '?') || strchr(av, '[')) { @@ -503,7 +520,7 @@ static void append_one_rev(const char *av) int saved_matches = ref_name_cnt; match_ref_pattern = av; match_ref_slash = count_slash(av); - for_each_ref(append_matching_ref); + for_each_ref(append_matching_ref, NULL); if (saved_matches == ref_name_cnt && ref_name_cnt < MAX_REVS) error("no matching refs with %s", av); @@ -521,7 +538,7 @@ static int git_show_branch_config(const char *var, const char *value) default_alloc = default_alloc * 3 / 2 + 20; default_arg = xrealloc(default_arg, sizeof *default_arg * default_alloc); } - default_arg[default_num++] = strdup(value); + default_arg[default_num++] = xstrdup(value); default_arg[default_num] = NULL; return 0; } @@ -550,18 +567,33 @@ static int omit_in_dense(struct commit *commit, struct commit **rev, int n) return 0; } +static void parse_reflog_param(const char *arg, int *cnt, const char **base) +{ + char *ep; + *cnt = strtoul(arg, &ep, 10); + if (*ep == ',') + *base = ep + 1; + else if (*ep) + die("unrecognized reflog param '%s'", arg + 9); + else + *base = NULL; + if (*cnt <= 0) + *cnt = DEFAULT_REFLOG; +} + int cmd_show_branch(int ac, const char **av, const char *prefix) { struct commit *rev[MAX_REVS], *commit; + char *reflog_msg[MAX_REVS]; struct commit_list *list = NULL, *seen = NULL; unsigned int rev_mask[MAX_REVS]; int num_rev, i, extra = 0; - int all_heads = 0, all_tags = 0; + int all_heads = 0, all_remotes = 0; int all_mask, all_revs; int lifo = 1; - char head_path[128]; - const char *head_path_p; - int head_path_len; + char head[128]; + const char *head_p; + int head_len; unsigned char head_sha1[20]; int merge_base = 0; int independent = 0; @@ -572,6 +604,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix) int head_at = -1; int topics = 0; int dense = 1; + int reflog = 0; + const char *reflog_base = NULL; git_config(git_show_branch_config); @@ -587,12 +621,10 @@ int cmd_show_branch(int ac, const char **av, const char *prefix) ac--; av++; break; } - else if (!strcmp(arg, "--all")) - all_heads = all_tags = 1; - else if (!strcmp(arg, "--heads")) - all_heads = 1; - else if (!strcmp(arg, "--tags")) - all_tags = 1; + else if (!strcmp(arg, "--all") || !strcmp(arg, "-a")) + all_heads = all_remotes = 1; + else if (!strcmp(arg, "--remotes") || !strcmp(arg, "-r")) + all_remotes = 1; else if (!strcmp(arg, "--more")) extra = 1; else if (!strcmp(arg, "--list")) @@ -617,52 +649,122 @@ int cmd_show_branch(int ac, const char **av, const char *prefix) dense = 0; else if (!strcmp(arg, "--date-order")) lifo = 0; + else if (!strcmp(arg, "--reflog")) { + reflog = DEFAULT_REFLOG; + } + else if (!strncmp(arg, "--reflog=", 9)) + parse_reflog_param(arg + 9, &reflog, &reflog_base); else usage(show_branch_usage); ac--; av++; } ac--; av++; - /* Only one of these is allowed */ - if (1 < independent + merge_base + (extra != 0)) - usage(show_branch_usage); + if (!!extra || !!reflog) { + /* "listing" mode is incompatible with + * independent nor merge-base modes. + */ + if (independent || merge_base) + usage(show_branch_usage); + if (!!reflog && ((0 < extra) || all_heads || all_remotes)) + /* + * Asking for --more in reflog mode does not + * make sense. --list is Ok. + * + * Also --all and --remotes do not make sense either. + */ + usage(show_branch_usage_reflog); + } /* If nothing is specified, show all branches by default */ - if (ac + all_heads + all_tags == 0) + if (ac + all_heads + all_remotes == 0) all_heads = 1; - if (all_heads + all_tags) - snarf_refs(all_heads, all_tags); - while (0 < ac) { - append_one_rev(*av); - ac--; av++; + if (all_heads + all_remotes) + snarf_refs(all_heads, all_remotes); + if (reflog) { + unsigned char sha1[20]; + char nth_desc[256]; + char *ref; + int base = 0; + if (ac != 1) + die("--reflog option needs one branch name"); + if (MAX_REVS < reflog) + die("Only %d entries can be shown at one time.", + MAX_REVS); + if (!dwim_ref(*av, strlen(*av), sha1, &ref)) + die("No such ref %s", *av); + + /* Has the base been specified? */ + if (reflog_base) { + char *ep; + base = strtoul(reflog_base, &ep, 10); + if (*ep) { + /* Ah, that is a date spec... */ + unsigned long at; + at = approxidate(reflog_base); + read_ref_at(ref, at, -1, sha1, NULL, + NULL, NULL, &base); + } + } + + for (i = 0; i < reflog; i++) { + char *logmsg, *msg, *m; + unsigned long timestamp; + int tz; + + if (read_ref_at(ref, 0, base+i, sha1, &logmsg, + ×tamp, &tz, NULL)) { + reflog = i; + break; + } + msg = strchr(logmsg, '\t'); + if (!msg) + msg = "(none)"; + else + msg++; + m = xmalloc(strlen(msg) + 200); + sprintf(m, "(%s) %s", + show_date(timestamp, tz, 1), + msg); + reflog_msg[i] = m; + free(logmsg); + sprintf(nth_desc, "%s@{%d}", *av, base+i); + append_ref(nth_desc, sha1, 1); + } + } + else { + while (0 < ac) { + append_one_rev(*av); + ac--; av++; + } } - head_path_p = resolve_ref(git_path("HEAD"), head_sha1, 1); - if (head_path_p) { - head_path_len = strlen(head_path_p); - memcpy(head_path, head_path_p, head_path_len + 1); + head_p = resolve_ref("HEAD", head_sha1, 1, NULL); + if (head_p) { + head_len = strlen(head_p); + memcpy(head, head_p, head_len + 1); } else { - head_path_len = 0; - head_path[0] = 0; + head_len = 0; + head[0] = 0; } - if (with_current_branch && head_path_p) { + if (with_current_branch && head_p) { int has_head = 0; for (i = 0; !has_head && i < ref_name_cnt; i++) { /* We are only interested in adding the branch * HEAD points at. */ - if (rev_is_head(head_path, - head_path_len, + if (rev_is_head(head, + head_len, ref_name[i], head_sha1, NULL)) has_head++; } if (!has_head) { - int pfxlen = strlen(git_path("refs/heads/")); - append_one_rev(head_path + pfxlen); + int pfxlen = strlen("refs/heads/"); + append_one_rev(head + pfxlen); } } @@ -713,8 +815,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix) if (1 < num_rev || extra < 0) { for (i = 0; i < num_rev; i++) { int j; - int is_head = rev_is_head(head_path, - head_path_len, + int is_head = rev_is_head(head, + head_len, ref_name[i], head_sha1, rev[i]->object.sha1); @@ -727,8 +829,14 @@ int cmd_show_branch(int ac, const char **av, const char *prefix) printf("%c [%s] ", is_head ? '*' : '!', ref_name[i]); } - /* header lines never need name */ - show_one_commit(rev[i], 1); + + if (!reflog) { + /* header lines never need name */ + show_one_commit(rev[i], 1); + } + else + puts(reflog_msg[i]); + if (is_head) head_at = i; }