10 #include "parse-options.h"
17 #define QUOTE_PYTHON 4
20 typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
24 unsigned long ul; /* used for sorting when not FIELD_STR */
28 struct ref_sort *next;
29 int atom; /* index into used_atom array */
35 unsigned char objectname[20];
38 struct atom_value *value;
47 { "objectsize", FIELD_ULONG },
51 { "numparent", FIELD_ULONG },
58 { "authordate", FIELD_TIME },
62 { "committerdate", FIELD_TIME },
66 { "taggerdate", FIELD_TIME },
68 { "creatordate", FIELD_TIME },
72 { "contents:subject" },
74 { "contents:signature" },
81 * An atom is a valid field atom listed above, possibly prefixed with
82 * a "*" to denote deref_tag().
84 * We parse given format string and sort specifiers, and make a list
85 * of properties that we need to extract out of objects. refinfo
86 * structure will hold an array of values extracted that can be
87 * indexed with the "atom number", which is an index into this
90 static const char **used_atom;
91 static cmp_type *used_atom_type;
92 static int used_atom_cnt, sort_atom_limit, need_tagged, need_symref;
95 * Used to parse format string and sort specifiers
97 static int parse_atom(const char *atom, const char *ep)
103 if (*sp == '*' && sp < ep)
106 die("malformed field name: %.*s", (int)(ep-atom), atom);
108 /* Do we have the atom already used elsewhere? */
109 for (i = 0; i < used_atom_cnt; i++) {
110 int len = strlen(used_atom[i]);
111 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
115 /* Is the atom a valid one? */
116 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
117 int len = strlen(valid_atom[i].name);
119 * If the atom name has a colon, strip it and everything after
120 * it off - it specifies the format for this entry, and
121 * shouldn't be used for checking against the valid_atom
124 const char *formatp = strchr(sp, ':');
125 if (!formatp || ep < formatp)
127 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
131 if (ARRAY_SIZE(valid_atom) <= i)
132 die("unknown field name: %.*s", (int)(ep-atom), atom);
134 /* Add it in, including the deref prefix */
137 used_atom = xrealloc(used_atom,
138 (sizeof *used_atom) * used_atom_cnt);
139 used_atom_type = xrealloc(used_atom_type,
140 (sizeof(*used_atom_type) * used_atom_cnt));
141 used_atom[at] = xmemdupz(atom, ep - atom);
142 used_atom_type[at] = valid_atom[i].cmp_type;
145 if (!strcmp(used_atom[at], "symref"))
151 * In a format string, find the next occurrence of %(atom).
153 static const char *find_next(const char *cp)
158 * %( is the start of an atom;
159 * %% is a quoted per-cent.
163 else if (cp[1] == '%')
164 cp++; /* skip over two % */
165 /* otherwise this is a singleton, literal % */
173 * Make sure the format string is well formed, and parse out
176 static int verify_format(const char *format)
179 for (cp = format; *cp && (sp = find_next(cp)); ) {
180 const char *ep = strchr(sp, ')');
182 return error("malformed format string %s", sp);
183 /* sp points at "%(" and ep points at the closing ")" */
184 parse_atom(sp + 2, ep);
191 * Given an object name, read the object data and size, and return a
192 * "struct object". If the object data we are returning is also borrowed
193 * by the "struct object" representation, set *eaten as well---it is a
194 * signal from parse_object_buffer to us not to free the buffer.
196 static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
198 enum object_type type;
199 void *buf = read_sha1_file(sha1, &type, sz);
202 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
208 /* See grab_values */
209 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
213 for (i = 0; i < used_atom_cnt; i++) {
214 const char *name = used_atom[i];
215 struct atom_value *v = &val[i];
216 if (!!deref != (*name == '*'))
220 if (!strcmp(name, "objecttype"))
221 v->s = typename(obj->type);
222 else if (!strcmp(name, "objectsize")) {
223 char *s = xmalloc(40);
224 sprintf(s, "%lu", sz);
228 else if (!strcmp(name, "objectname")) {
229 char *s = xmalloc(41);
230 strcpy(s, sha1_to_hex(obj->sha1));
233 else if (!strcmp(name, "objectname:short")) {
234 v->s = xstrdup(find_unique_abbrev(obj->sha1,
240 /* See grab_values */
241 static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
244 struct tag *tag = (struct tag *) obj;
246 for (i = 0; i < used_atom_cnt; i++) {
247 const char *name = used_atom[i];
248 struct atom_value *v = &val[i];
249 if (!!deref != (*name == '*'))
253 if (!strcmp(name, "tag"))
255 else if (!strcmp(name, "type") && tag->tagged)
256 v->s = typename(tag->tagged->type);
257 else if (!strcmp(name, "object") && tag->tagged) {
258 char *s = xmalloc(41);
259 strcpy(s, sha1_to_hex(tag->tagged->sha1));
265 static int num_parents(struct commit *commit)
267 struct commit_list *parents;
270 for (i = 0, parents = commit->parents;
272 parents = parents->next)
277 /* See grab_values */
278 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
281 struct commit *commit = (struct commit *) obj;
283 for (i = 0; i < used_atom_cnt; i++) {
284 const char *name = used_atom[i];
285 struct atom_value *v = &val[i];
286 if (!!deref != (*name == '*'))
290 if (!strcmp(name, "tree")) {
291 char *s = xmalloc(41);
292 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
295 if (!strcmp(name, "numparent")) {
296 char *s = xmalloc(40);
297 v->ul = num_parents(commit);
298 sprintf(s, "%lu", v->ul);
301 else if (!strcmp(name, "parent")) {
302 int num = num_parents(commit);
304 struct commit_list *parents;
305 char *s = xmalloc(41 * num + 1);
307 for (i = 0, parents = commit->parents;
309 parents = parents->next, i = i + 41) {
310 struct commit *parent = parents->item;
311 strcpy(s+i, sha1_to_hex(parent->object.sha1));
321 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
325 if (!strncmp(buf, who, wholen) &&
327 return buf + wholen + 1;
328 eol = strchr(buf, '\n');
333 return ""; /* end of header */
339 static const char *copy_line(const char *buf)
341 const char *eol = strchrnul(buf, '\n');
342 return xmemdupz(buf, eol - buf);
345 static const char *copy_name(const char *buf)
348 for (cp = buf; *cp && *cp != '\n'; cp++) {
349 if (!strncmp(cp, " <", 2))
350 return xmemdupz(buf, cp - buf);
355 static const char *copy_email(const char *buf)
357 const char *email = strchr(buf, '<');
361 eoemail = strchr(email, '>');
364 return xmemdupz(email, eoemail + 1 - email);
367 static char *copy_subject(const char *buf, unsigned long len)
369 char *r = xmemdupz(buf, len);
372 for (i = 0; i < len; i++)
379 static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
381 const char *eoemail = strstr(buf, "> ");
383 unsigned long timestamp;
385 enum date_mode date_mode = DATE_NORMAL;
389 * We got here because atomname ends in "date" or "date<something>";
390 * it's not possible that <something> is not ":<format>" because
391 * parse_atom() wouldn't have allowed it, so we can assume that no
392 * ":" means no format is specified, and use the default.
394 formatp = strchr(atomname, ':');
395 if (formatp != NULL) {
397 date_mode = parse_date_format(formatp);
402 timestamp = strtoul(eoemail + 2, &zone, 10);
403 if (timestamp == ULONG_MAX)
405 tz = strtol(zone, NULL, 10);
406 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
408 v->s = xstrdup(show_date(timestamp, tz, date_mode));
416 /* See grab_values */
417 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
420 int wholen = strlen(who);
421 const char *wholine = NULL;
423 for (i = 0; i < used_atom_cnt; i++) {
424 const char *name = used_atom[i];
425 struct atom_value *v = &val[i];
426 if (!!deref != (*name == '*'))
430 if (strncmp(who, name, wholen))
432 if (name[wholen] != 0 &&
433 strcmp(name + wholen, "name") &&
434 strcmp(name + wholen, "email") &&
435 prefixcmp(name + wholen, "date"))
438 wholine = find_wholine(who, wholen, buf, sz);
440 return; /* no point looking for it */
441 if (name[wholen] == 0)
442 v->s = copy_line(wholine);
443 else if (!strcmp(name + wholen, "name"))
444 v->s = copy_name(wholine);
445 else if (!strcmp(name + wholen, "email"))
446 v->s = copy_email(wholine);
447 else if (!prefixcmp(name + wholen, "date"))
448 grab_date(wholine, v, name);
452 * For a tag or a commit object, if "creator" or "creatordate" is
453 * requested, do something special.
455 if (strcmp(who, "tagger") && strcmp(who, "committer"))
456 return; /* "author" for commit object is not wanted */
458 wholine = find_wholine(who, wholen, buf, sz);
461 for (i = 0; i < used_atom_cnt; i++) {
462 const char *name = used_atom[i];
463 struct atom_value *v = &val[i];
464 if (!!deref != (*name == '*'))
469 if (!prefixcmp(name, "creatordate"))
470 grab_date(wholine, v, name);
471 else if (!strcmp(name, "creator"))
472 v->s = copy_line(wholine);
476 static void find_subpos(const char *buf, unsigned long sz,
477 const char **sub, unsigned long *sublen,
478 const char **body, unsigned long *bodylen,
479 unsigned long *nonsiglen,
480 const char **sig, unsigned long *siglen)
483 /* skip past header until we hit empty line */
484 while (*buf && *buf != '\n') {
485 eol = strchrnul(buf, '\n');
490 /* skip any empty lines */
494 /* parse signature first; we might not even have a subject line */
495 *sig = buf + parse_signature(buf, strlen(buf));
496 *siglen = strlen(*sig);
498 /* subject is first non-empty line */
500 /* subject goes to first empty line */
501 while (buf < *sig && *buf && *buf != '\n') {
502 eol = strchrnul(buf, '\n');
507 *sublen = buf - *sub;
508 /* drop trailing newline, if present */
509 if (*sublen && (*sub)[*sublen - 1] == '\n')
512 /* skip any empty lines */
516 *bodylen = strlen(buf);
517 *nonsiglen = *sig - buf;
520 /* See grab_values */
521 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
524 const char *subpos = NULL, *bodypos = NULL, *sigpos = NULL;
525 unsigned long sublen = 0, bodylen = 0, nonsiglen = 0, siglen = 0;
527 for (i = 0; i < used_atom_cnt; i++) {
528 const char *name = used_atom[i];
529 struct atom_value *v = &val[i];
530 if (!!deref != (*name == '*'))
534 if (strcmp(name, "subject") &&
535 strcmp(name, "body") &&
536 strcmp(name, "contents") &&
537 strcmp(name, "contents:subject") &&
538 strcmp(name, "contents:body") &&
539 strcmp(name, "contents:signature"))
544 &bodypos, &bodylen, &nonsiglen,
547 if (!strcmp(name, "subject"))
548 v->s = copy_subject(subpos, sublen);
549 else if (!strcmp(name, "contents:subject"))
550 v->s = copy_subject(subpos, sublen);
551 else if (!strcmp(name, "body"))
552 v->s = xmemdupz(bodypos, bodylen);
553 else if (!strcmp(name, "contents:body"))
554 v->s = xmemdupz(bodypos, nonsiglen);
555 else if (!strcmp(name, "contents:signature"))
556 v->s = xmemdupz(sigpos, siglen);
557 else if (!strcmp(name, "contents"))
558 v->s = xstrdup(subpos);
563 * We want to have empty print-string for field requests
564 * that do not apply (e.g. "authordate" for a tag object)
566 static void fill_missing_values(struct atom_value *val)
569 for (i = 0; i < used_atom_cnt; i++) {
570 struct atom_value *v = &val[i];
577 * val is a list of atom_value to hold returned values. Extract
578 * the values for atoms in used_atom array out of (obj, buf, sz).
579 * when deref is false, (obj, buf, sz) is the object that is
580 * pointed at by the ref itself; otherwise it is the object the
581 * ref (which is a tag) refers to.
583 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
585 grab_common_values(val, deref, obj, buf, sz);
588 grab_tag_values(val, deref, obj, buf, sz);
589 grab_sub_body_contents(val, deref, obj, buf, sz);
590 grab_person("tagger", val, deref, obj, buf, sz);
593 grab_commit_values(val, deref, obj, buf, sz);
594 grab_sub_body_contents(val, deref, obj, buf, sz);
595 grab_person("author", val, deref, obj, buf, sz);
596 grab_person("committer", val, deref, obj, buf, sz);
599 /* grab_tree_values(val, deref, obj, buf, sz); */
602 /* grab_blob_values(val, deref, obj, buf, sz); */
605 die("Eh? Object of type %d?", obj->type);
609 static inline char *copy_advance(char *dst, const char *src)
617 * Parse the object referred by ref, and grab needed value.
619 static void populate_value(struct refinfo *ref)
625 const unsigned char *tagged;
627 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
629 if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
630 unsigned char unused1[20];
631 ref->symref = resolve_refdup(ref->refname, unused1, 1, NULL);
636 /* Fill in specials first */
637 for (i = 0; i < used_atom_cnt; i++) {
638 const char *name = used_atom[i];
639 struct atom_value *v = &ref->value[i];
649 if (!prefixcmp(name, "refname"))
650 refname = ref->refname;
651 else if (!prefixcmp(name, "symref"))
652 refname = ref->symref ? ref->symref : "";
653 else if (!prefixcmp(name, "upstream")) {
654 struct branch *branch;
655 /* only local branches may have an upstream */
656 if (prefixcmp(ref->refname, "refs/heads/"))
658 branch = branch_get(ref->refname + 11);
660 if (!branch || !branch->merge || !branch->merge[0] ||
661 !branch->merge[0]->dst)
663 refname = branch->merge[0]->dst;
665 else if (!strcmp(name, "flag")) {
666 char buf[256], *cp = buf;
667 if (ref->flag & REF_ISSYMREF)
668 cp = copy_advance(cp, ",symref");
669 if (ref->flag & REF_ISPACKED)
670 cp = copy_advance(cp, ",packed");
675 v->s = xstrdup(buf + 1);
682 formatp = strchr(name, ':');
683 /* look for "short" refname format */
686 if (!strcmp(formatp, "short"))
687 refname = shorten_unambiguous_ref(refname,
688 warn_ambiguous_refs);
690 die("unknown %.*s format %s",
691 (int)(formatp - name), name, formatp);
697 int len = strlen(refname);
698 char *s = xmalloc(len + 4);
699 sprintf(s, "%s^{}", refname);
704 for (i = 0; i < used_atom_cnt; i++) {
705 struct atom_value *v = &ref->value[i];
712 buf = get_obj(ref->objectname, &obj, &size, &eaten);
714 die("missing object %s for %s",
715 sha1_to_hex(ref->objectname), ref->refname);
717 die("parse_object_buffer failed on %s for %s",
718 sha1_to_hex(ref->objectname), ref->refname);
720 grab_values(ref->value, 0, obj, buf, size);
725 * If there is no atom that wants to know about tagged
726 * object, we are done.
728 if (!need_tagged || (obj->type != OBJ_TAG))
732 * If it is a tag object, see if we use a value that derefs
733 * the object, and if we do grab the object it refers to.
735 tagged = ((struct tag *)obj)->tagged->sha1;
738 * NEEDSWORK: This derefs tag only once, which
739 * is good to deal with chains of trust, but
740 * is not consistent with what deref_tag() does
741 * which peels the onion to the core.
743 buf = get_obj(tagged, &obj, &size, &eaten);
745 die("missing object %s for %s",
746 sha1_to_hex(tagged), ref->refname);
748 die("parse_object_buffer failed on %s for %s",
749 sha1_to_hex(tagged), ref->refname);
750 grab_values(ref->value, 1, obj, buf, size);
756 * Given a ref, return the value for the atom. This lazily gets value
757 * out of the object by calling populate value.
759 static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
763 fill_missing_values(ref->value);
765 *v = &ref->value[atom];
768 struct grab_ref_cbdata {
769 struct refinfo **grab_array;
770 const char **grab_pattern;
775 * A call-back given to for_each_ref(). Filter refs and keep them for
776 * later object processing.
778 static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
780 struct grab_ref_cbdata *cb = cb_data;
784 if (*cb->grab_pattern) {
785 const char **pattern;
786 int namelen = strlen(refname);
787 for (pattern = cb->grab_pattern; *pattern; pattern++) {
788 const char *p = *pattern;
789 int plen = strlen(p);
791 if ((plen <= namelen) &&
792 !strncmp(refname, p, plen) &&
793 (refname[plen] == '\0' ||
794 refname[plen] == '/' ||
797 if (!fnmatch(p, refname, FNM_PATHNAME))
805 * We do not open the object yet; sort may only need refname
806 * to do its job and the resulting list may yet to be pruned
809 ref = xcalloc(1, sizeof(*ref));
810 ref->refname = xstrdup(refname);
811 hashcpy(ref->objectname, sha1);
815 cb->grab_array = xrealloc(cb->grab_array,
816 sizeof(*cb->grab_array) * (cnt + 1));
817 cb->grab_array[cnt++] = ref;
822 static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
824 struct atom_value *va, *vb;
826 cmp_type cmp_type = used_atom_type[s->atom];
828 get_value(a, s->atom, &va);
829 get_value(b, s->atom, &vb);
832 cmp = strcmp(va->s, vb->s);
837 else if (va->ul == vb->ul)
843 return (s->reverse) ? -cmp : cmp;
846 static struct ref_sort *ref_sort;
847 static int compare_refs(const void *a_, const void *b_)
849 struct refinfo *a = *((struct refinfo **)a_);
850 struct refinfo *b = *((struct refinfo **)b_);
853 for (s = ref_sort; s; s = s->next) {
854 int cmp = cmp_ref_sort(s, a, b);
861 static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
864 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
867 static void print_value(struct refinfo *ref, int atom, int quote_style)
869 struct atom_value *v;
870 get_value(ref, atom, &v);
871 switch (quote_style) {
876 sq_quote_print(stdout, v->s);
879 perl_quote_print(stdout, v->s);
882 python_quote_print(stdout, v->s);
885 tcl_quote_print(stdout, v->s);
890 static int hex1(char ch)
892 if ('0' <= ch && ch <= '9')
894 else if ('a' <= ch && ch <= 'f')
895 return ch - 'a' + 10;
896 else if ('A' <= ch && ch <= 'F')
897 return ch - 'A' + 10;
900 static int hex2(const char *cp)
903 return (hex1(cp[0]) << 4) | hex1(cp[1]);
908 static void emit(const char *cp, const char *ep)
910 while (*cp && (!ep || cp < ep)) {
915 int ch = hex2(cp + 1);
928 static void show_ref(struct refinfo *info, const char *format, int quote_style)
930 const char *cp, *sp, *ep;
932 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
933 ep = strchr(sp, ')');
936 print_value(info, parse_atom(sp + 2, ep), quote_style);
939 sp = cp + strlen(cp);
945 static struct ref_sort *default_sort(void)
947 static const char cstr_name[] = "refname";
949 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
952 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
956 static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
958 struct ref_sort **sort_tail = opt->value;
962 if (!arg) /* should --no-sort void the list ? */
965 *sort_tail = s = xcalloc(1, sizeof(*s));
972 s->atom = parse_atom(arg, arg+len);
976 static char const * const for_each_ref_usage[] = {
977 N_("git for-each-ref [options] [<pattern>]"),
981 int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
984 const char *format = "%(objectname) %(objecttype)\t%(refname)";
985 struct ref_sort *sort = NULL, **sort_tail = &sort;
986 int maxcount = 0, quote_style = 0;
987 struct refinfo **refs;
988 struct grab_ref_cbdata cbdata;
990 struct option opts[] = {
991 OPT_BIT('s', "shell", "e_style,
992 N_("quote placeholders suitably for shells"), QUOTE_SHELL),
993 OPT_BIT('p', "perl", "e_style,
994 N_("quote placeholders suitably for perl"), QUOTE_PERL),
995 OPT_BIT(0 , "python", "e_style,
996 N_("quote placeholders suitably for python"), QUOTE_PYTHON),
997 OPT_BIT(0 , "tcl", "e_style,
998 N_("quote placeholders suitably for tcl"), QUOTE_TCL),
1001 OPT_INTEGER( 0 , "count", &maxcount, N_("show only <n> matched refs")),
1002 OPT_STRING( 0 , "format", &format, N_("format"), N_("format to use for the output")),
1003 OPT_CALLBACK(0 , "sort", sort_tail, N_("key"),
1004 N_("field name to sort on"), &opt_parse_sort),
1008 parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
1010 error("invalid --count argument: `%d'", maxcount);
1011 usage_with_options(for_each_ref_usage, opts);
1013 if (HAS_MULTI_BITS(quote_style)) {
1014 error("more than one quoting style?");
1015 usage_with_options(for_each_ref_usage, opts);
1017 if (verify_format(format))
1018 usage_with_options(for_each_ref_usage, opts);
1021 sort = default_sort();
1022 sort_atom_limit = used_atom_cnt;
1024 /* for warn_ambiguous_refs */
1025 git_config(git_default_config, NULL);
1027 memset(&cbdata, 0, sizeof(cbdata));
1028 cbdata.grab_pattern = argv;
1029 for_each_rawref(grab_single_ref, &cbdata);
1030 refs = cbdata.grab_array;
1031 num_refs = cbdata.grab_cnt;
1033 sort_refs(sort, refs, num_refs);
1035 if (!maxcount || num_refs < maxcount)
1036 maxcount = num_refs;
1037 for (i = 0; i < maxcount; i++)
1038 show_ref(refs[i], format, quote_style);