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 },
78 * An atom is a valid field atom listed above, possibly prefixed with
79 * a "*" to denote deref_tag().
81 * We parse given format string and sort specifiers, and make a list
82 * of properties that we need to extract out of objects. refinfo
83 * structure will hold an array of values extracted that can be
84 * indexed with the "atom number", which is an index into this
87 static const char **used_atom;
88 static cmp_type *used_atom_type;
89 static int used_atom_cnt, sort_atom_limit, need_tagged, need_symref;
92 * Used to parse format string and sort specifiers
94 static int parse_atom(const char *atom, const char *ep)
100 if (*sp == '*' && sp < ep)
103 die("malformed field name: %.*s", (int)(ep-atom), atom);
105 /* Do we have the atom already used elsewhere? */
106 for (i = 0; i < used_atom_cnt; i++) {
107 int len = strlen(used_atom[i]);
108 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
112 /* Is the atom a valid one? */
113 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
114 int len = strlen(valid_atom[i].name);
116 * If the atom name has a colon, strip it and everything after
117 * it off - it specifies the format for this entry, and
118 * shouldn't be used for checking against the valid_atom
121 const char *formatp = strchr(sp, ':');
122 if (!formatp || ep < formatp)
124 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
128 if (ARRAY_SIZE(valid_atom) <= i)
129 die("unknown field name: %.*s", (int)(ep-atom), atom);
131 /* Add it in, including the deref prefix */
134 used_atom = xrealloc(used_atom,
135 (sizeof *used_atom) * used_atom_cnt);
136 used_atom_type = xrealloc(used_atom_type,
137 (sizeof(*used_atom_type) * used_atom_cnt));
138 used_atom[at] = xmemdupz(atom, ep - atom);
139 used_atom_type[at] = valid_atom[i].cmp_type;
142 if (!strcmp(used_atom[at], "symref"))
148 * In a format string, find the next occurrence of %(atom).
150 static const char *find_next(const char *cp)
155 * %( is the start of an atom;
156 * %% is a quoted per-cent.
160 else if (cp[1] == '%')
161 cp++; /* skip over two % */
162 /* otherwise this is a singleton, literal % */
170 * Make sure the format string is well formed, and parse out
173 static int verify_format(const char *format)
176 for (cp = format; *cp && (sp = find_next(cp)); ) {
177 const char *ep = strchr(sp, ')');
179 return error("malformed format string %s", sp);
180 /* sp points at "%(" and ep points at the closing ")" */
181 parse_atom(sp + 2, ep);
188 * Given an object name, read the object data and size, and return a
189 * "struct object". If the object data we are returning is also borrowed
190 * by the "struct object" representation, set *eaten as well---it is a
191 * signal from parse_object_buffer to us not to free the buffer.
193 static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
195 enum object_type type;
196 void *buf = read_sha1_file(sha1, &type, sz);
199 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
205 /* See grab_values */
206 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
210 for (i = 0; i < used_atom_cnt; i++) {
211 const char *name = used_atom[i];
212 struct atom_value *v = &val[i];
213 if (!!deref != (*name == '*'))
217 if (!strcmp(name, "objecttype"))
218 v->s = typename(obj->type);
219 else if (!strcmp(name, "objectsize")) {
220 char *s = xmalloc(40);
221 sprintf(s, "%lu", sz);
225 else if (!strcmp(name, "objectname")) {
226 char *s = xmalloc(41);
227 strcpy(s, sha1_to_hex(obj->sha1));
233 /* See grab_values */
234 static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
237 struct tag *tag = (struct tag *) obj;
239 for (i = 0; i < used_atom_cnt; i++) {
240 const char *name = used_atom[i];
241 struct atom_value *v = &val[i];
242 if (!!deref != (*name == '*'))
246 if (!strcmp(name, "tag"))
248 else if (!strcmp(name, "type") && tag->tagged)
249 v->s = typename(tag->tagged->type);
250 else if (!strcmp(name, "object") && tag->tagged) {
251 char *s = xmalloc(41);
252 strcpy(s, sha1_to_hex(tag->tagged->sha1));
258 static int num_parents(struct commit *commit)
260 struct commit_list *parents;
263 for (i = 0, parents = commit->parents;
265 parents = parents->next)
270 /* See grab_values */
271 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
274 struct commit *commit = (struct commit *) obj;
276 for (i = 0; i < used_atom_cnt; i++) {
277 const char *name = used_atom[i];
278 struct atom_value *v = &val[i];
279 if (!!deref != (*name == '*'))
283 if (!strcmp(name, "tree")) {
284 char *s = xmalloc(41);
285 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
288 if (!strcmp(name, "numparent")) {
289 char *s = xmalloc(40);
290 v->ul = num_parents(commit);
291 sprintf(s, "%lu", v->ul);
294 else if (!strcmp(name, "parent")) {
295 int num = num_parents(commit);
297 struct commit_list *parents;
298 char *s = xmalloc(41 * num + 1);
300 for (i = 0, parents = commit->parents;
302 parents = parents->next, i = i + 41) {
303 struct commit *parent = parents->item;
304 strcpy(s+i, sha1_to_hex(parent->object.sha1));
314 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
318 if (!strncmp(buf, who, wholen) &&
320 return buf + wholen + 1;
321 eol = strchr(buf, '\n');
326 return ""; /* end of header */
332 static const char *copy_line(const char *buf)
334 const char *eol = strchrnul(buf, '\n');
335 return xmemdupz(buf, eol - buf);
338 static const char *copy_name(const char *buf)
341 for (cp = buf; *cp && *cp != '\n'; cp++) {
342 if (!strncmp(cp, " <", 2))
343 return xmemdupz(buf, cp - buf);
348 static const char *copy_email(const char *buf)
350 const char *email = strchr(buf, '<');
354 eoemail = strchr(email, '>');
357 return xmemdupz(email, eoemail + 1 - email);
360 static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
362 const char *eoemail = strstr(buf, "> ");
364 unsigned long timestamp;
366 enum date_mode date_mode = DATE_NORMAL;
370 * We got here because atomname ends in "date" or "date<something>";
371 * it's not possible that <something> is not ":<format>" because
372 * parse_atom() wouldn't have allowed it, so we can assume that no
373 * ":" means no format is specified, and use the default.
375 formatp = strchr(atomname, ':');
376 if (formatp != NULL) {
378 date_mode = parse_date_format(formatp);
383 timestamp = strtoul(eoemail + 2, &zone, 10);
384 if (timestamp == ULONG_MAX)
386 tz = strtol(zone, NULL, 10);
387 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
389 v->s = xstrdup(show_date(timestamp, tz, date_mode));
397 /* See grab_values */
398 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
401 int wholen = strlen(who);
402 const char *wholine = NULL;
404 for (i = 0; i < used_atom_cnt; i++) {
405 const char *name = used_atom[i];
406 struct atom_value *v = &val[i];
407 if (!!deref != (*name == '*'))
411 if (strncmp(who, name, wholen))
413 if (name[wholen] != 0 &&
414 strcmp(name + wholen, "name") &&
415 strcmp(name + wholen, "email") &&
416 prefixcmp(name + wholen, "date"))
419 wholine = find_wholine(who, wholen, buf, sz);
421 return; /* no point looking for it */
422 if (name[wholen] == 0)
423 v->s = copy_line(wholine);
424 else if (!strcmp(name + wholen, "name"))
425 v->s = copy_name(wholine);
426 else if (!strcmp(name + wholen, "email"))
427 v->s = copy_email(wholine);
428 else if (!prefixcmp(name + wholen, "date"))
429 grab_date(wholine, v, name);
433 * For a tag or a commit object, if "creator" or "creatordate" is
434 * requested, do something special.
436 if (strcmp(who, "tagger") && strcmp(who, "committer"))
437 return; /* "author" for commit object is not wanted */
439 wholine = find_wholine(who, wholen, buf, sz);
442 for (i = 0; i < used_atom_cnt; i++) {
443 const char *name = used_atom[i];
444 struct atom_value *v = &val[i];
445 if (!!deref != (*name == '*'))
450 if (!prefixcmp(name, "creatordate"))
451 grab_date(wholine, v, name);
452 else if (!strcmp(name, "creator"))
453 v->s = copy_line(wholine);
457 static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
460 const char *eol = strchr(buf, '\n');
463 if (eol[1] == '\n') {
465 break; /* found end of header */
473 *sub = buf; /* first non-empty line */
474 buf = strchr(buf, '\n');
477 return; /* no body */
480 buf++; /* skip blank between subject and body */
484 /* See grab_values */
485 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
488 const char *subpos = NULL, *bodypos = NULL;
490 for (i = 0; i < used_atom_cnt; i++) {
491 const char *name = used_atom[i];
492 struct atom_value *v = &val[i];
493 if (!!deref != (*name == '*'))
497 if (strcmp(name, "subject") &&
498 strcmp(name, "body") &&
499 strcmp(name, "contents"))
502 find_subpos(buf, sz, &subpos, &bodypos);
506 if (!strcmp(name, "subject"))
507 v->s = copy_line(subpos);
508 else if (!strcmp(name, "body"))
509 v->s = xstrdup(bodypos);
510 else if (!strcmp(name, "contents"))
511 v->s = xstrdup(subpos);
516 * We want to have empty print-string for field requests
517 * that do not apply (e.g. "authordate" for a tag object)
519 static void fill_missing_values(struct atom_value *val)
522 for (i = 0; i < used_atom_cnt; i++) {
523 struct atom_value *v = &val[i];
530 * val is a list of atom_value to hold returned values. Extract
531 * the values for atoms in used_atom array out of (obj, buf, sz).
532 * when deref is false, (obj, buf, sz) is the object that is
533 * pointed at by the ref itself; otherwise it is the object the
534 * ref (which is a tag) refers to.
536 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
538 grab_common_values(val, deref, obj, buf, sz);
541 grab_tag_values(val, deref, obj, buf, sz);
542 grab_sub_body_contents(val, deref, obj, buf, sz);
543 grab_person("tagger", val, deref, obj, buf, sz);
546 grab_commit_values(val, deref, obj, buf, sz);
547 grab_sub_body_contents(val, deref, obj, buf, sz);
548 grab_person("author", val, deref, obj, buf, sz);
549 grab_person("committer", val, deref, obj, buf, sz);
552 // grab_tree_values(val, deref, obj, buf, sz);
555 // grab_blob_values(val, deref, obj, buf, sz);
558 die("Eh? Object of type %d?", obj->type);
562 static inline char *copy_advance(char *dst, const char *src)
570 * Parse the object referred by ref, and grab needed value.
572 static void populate_value(struct refinfo *ref)
578 const unsigned char *tagged;
580 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
582 if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
583 unsigned char unused1[20];
585 symref = resolve_ref(ref->refname, unused1, 1, NULL);
587 ref->symref = xstrdup(symref);
592 /* Fill in specials first */
593 for (i = 0; i < used_atom_cnt; i++) {
594 const char *name = used_atom[i];
595 struct atom_value *v = &ref->value[i];
605 if (!prefixcmp(name, "refname"))
606 refname = ref->refname;
607 else if (!prefixcmp(name, "symref"))
608 refname = ref->symref ? ref->symref : "";
609 else if (!prefixcmp(name, "upstream")) {
610 struct branch *branch;
611 /* only local branches may have an upstream */
612 if (prefixcmp(ref->refname, "refs/heads/"))
614 branch = branch_get(ref->refname + 11);
616 if (!branch || !branch->merge || !branch->merge[0] ||
617 !branch->merge[0]->dst)
619 refname = branch->merge[0]->dst;
621 else if (!strcmp(name, "flag")) {
622 char buf[256], *cp = buf;
623 if (ref->flag & REF_ISSYMREF)
624 cp = copy_advance(cp, ",symref");
625 if (ref->flag & REF_ISPACKED)
626 cp = copy_advance(cp, ",packed");
631 v->s = xstrdup(buf + 1);
638 formatp = strchr(name, ':');
639 /* look for "short" refname format */
642 if (!strcmp(formatp, "short"))
643 refname = shorten_unambiguous_ref(refname,
644 warn_ambiguous_refs);
646 die("unknown %.*s format %s",
647 (int)(formatp - name), name, formatp);
653 int len = strlen(refname);
654 char *s = xmalloc(len + 4);
655 sprintf(s, "%s^{}", refname);
660 for (i = 0; i < used_atom_cnt; i++) {
661 struct atom_value *v = &ref->value[i];
668 buf = get_obj(ref->objectname, &obj, &size, &eaten);
670 die("missing object %s for %s",
671 sha1_to_hex(ref->objectname), ref->refname);
673 die("parse_object_buffer failed on %s for %s",
674 sha1_to_hex(ref->objectname), ref->refname);
676 grab_values(ref->value, 0, obj, buf, size);
681 * If there is no atom that wants to know about tagged
682 * object, we are done.
684 if (!need_tagged || (obj->type != OBJ_TAG))
688 * If it is a tag object, see if we use a value that derefs
689 * the object, and if we do grab the object it refers to.
691 tagged = ((struct tag *)obj)->tagged->sha1;
694 * NEEDSWORK: This derefs tag only once, which
695 * is good to deal with chains of trust, but
696 * is not consistent with what deref_tag() does
697 * which peels the onion to the core.
699 buf = get_obj(tagged, &obj, &size, &eaten);
701 die("missing object %s for %s",
702 sha1_to_hex(tagged), ref->refname);
704 die("parse_object_buffer failed on %s for %s",
705 sha1_to_hex(tagged), ref->refname);
706 grab_values(ref->value, 1, obj, buf, size);
712 * Given a ref, return the value for the atom. This lazily gets value
713 * out of the object by calling populate value.
715 static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
719 fill_missing_values(ref->value);
721 *v = &ref->value[atom];
724 struct grab_ref_cbdata {
725 struct refinfo **grab_array;
726 const char **grab_pattern;
731 * A call-back given to for_each_ref(). Filter refs and keep them for
732 * later object processing.
734 static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
736 struct grab_ref_cbdata *cb = cb_data;
740 if (*cb->grab_pattern) {
741 const char **pattern;
742 int namelen = strlen(refname);
743 for (pattern = cb->grab_pattern; *pattern; pattern++) {
744 const char *p = *pattern;
745 int plen = strlen(p);
747 if ((plen <= namelen) &&
748 !strncmp(refname, p, plen) &&
749 (refname[plen] == '\0' ||
750 refname[plen] == '/' ||
753 if (!fnmatch(p, refname, FNM_PATHNAME))
761 * We do not open the object yet; sort may only need refname
762 * to do its job and the resulting list may yet to be pruned
765 ref = xcalloc(1, sizeof(*ref));
766 ref->refname = xstrdup(refname);
767 hashcpy(ref->objectname, sha1);
771 cb->grab_array = xrealloc(cb->grab_array,
772 sizeof(*cb->grab_array) * (cnt + 1));
773 cb->grab_array[cnt++] = ref;
778 static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
780 struct atom_value *va, *vb;
782 cmp_type cmp_type = used_atom_type[s->atom];
784 get_value(a, s->atom, &va);
785 get_value(b, s->atom, &vb);
788 cmp = strcmp(va->s, vb->s);
793 else if (va->ul == vb->ul)
799 return (s->reverse) ? -cmp : cmp;
802 static struct ref_sort *ref_sort;
803 static int compare_refs(const void *a_, const void *b_)
805 struct refinfo *a = *((struct refinfo **)a_);
806 struct refinfo *b = *((struct refinfo **)b_);
809 for (s = ref_sort; s; s = s->next) {
810 int cmp = cmp_ref_sort(s, a, b);
817 static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
820 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
823 static void print_value(struct refinfo *ref, int atom, int quote_style)
825 struct atom_value *v;
826 get_value(ref, atom, &v);
827 switch (quote_style) {
832 sq_quote_print(stdout, v->s);
835 perl_quote_print(stdout, v->s);
838 python_quote_print(stdout, v->s);
841 tcl_quote_print(stdout, v->s);
846 static int hex1(char ch)
848 if ('0' <= ch && ch <= '9')
850 else if ('a' <= ch && ch <= 'f')
851 return ch - 'a' + 10;
852 else if ('A' <= ch && ch <= 'F')
853 return ch - 'A' + 10;
856 static int hex2(const char *cp)
859 return (hex1(cp[0]) << 4) | hex1(cp[1]);
864 static void emit(const char *cp, const char *ep)
866 while (*cp && (!ep || cp < ep)) {
871 int ch = hex2(cp + 1);
884 static void show_ref(struct refinfo *info, const char *format, int quote_style)
886 const char *cp, *sp, *ep;
888 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
889 ep = strchr(sp, ')');
892 print_value(info, parse_atom(sp + 2, ep), quote_style);
895 sp = cp + strlen(cp);
901 static struct ref_sort *default_sort(void)
903 static const char cstr_name[] = "refname";
905 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
908 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
912 static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
914 struct ref_sort **sort_tail = opt->value;
918 if (!arg) /* should --no-sort void the list ? */
921 *sort_tail = s = xcalloc(1, sizeof(*s));
928 s->atom = parse_atom(arg, arg+len);
932 static char const * const for_each_ref_usage[] = {
933 "git for-each-ref [options] [<pattern>]",
937 int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
940 const char *format = "%(objectname) %(objecttype)\t%(refname)";
941 struct ref_sort *sort = NULL, **sort_tail = &sort;
942 int maxcount = 0, quote_style = 0;
943 struct refinfo **refs;
944 struct grab_ref_cbdata cbdata;
946 struct option opts[] = {
947 OPT_BIT('s', "shell", "e_style,
948 "quote placeholders suitably for shells", QUOTE_SHELL),
949 OPT_BIT('p', "perl", "e_style,
950 "quote placeholders suitably for perl", QUOTE_PERL),
951 OPT_BIT(0 , "python", "e_style,
952 "quote placeholders suitably for python", QUOTE_PYTHON),
953 OPT_BIT(0 , "tcl", "e_style,
954 "quote placeholders suitably for tcl", QUOTE_TCL),
957 OPT_INTEGER( 0 , "count", &maxcount, "show only <n> matched refs"),
958 OPT_STRING( 0 , "format", &format, "format", "format to use for the output"),
959 OPT_CALLBACK(0 , "sort", sort_tail, "key",
960 "field name to sort on", &opt_parse_sort),
964 parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
966 error("invalid --count argument: `%d'", maxcount);
967 usage_with_options(for_each_ref_usage, opts);
969 if (HAS_MULTI_BITS(quote_style)) {
970 error("more than one quoting style?");
971 usage_with_options(for_each_ref_usage, opts);
973 if (verify_format(format))
974 usage_with_options(for_each_ref_usage, opts);
977 sort = default_sort();
978 sort_atom_limit = used_atom_cnt;
980 /* for warn_ambiguous_refs */
981 git_config(git_default_config, NULL);
983 memset(&cbdata, 0, sizeof(cbdata));
984 cbdata.grab_pattern = argv;
985 for_each_rawref(grab_single_ref, &cbdata);
986 refs = cbdata.grab_array;
987 num_refs = cbdata.grab_cnt;
989 sort_refs(sort, refs, num_refs);
991 if (!maxcount || num_refs < maxcount)
993 for (i = 0; i < maxcount; i++)
994 show_ref(refs[i], format, quote_style);