10 #include "parse-options.h"
16 #define QUOTE_PYTHON 3
19 typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
23 unsigned long ul; /* used for sorting when not FIELD_STR */
27 struct ref_sort *next;
28 int atom; /* index into used_atom array */
34 unsigned char objectname[20];
35 struct atom_value *value;
44 { "objectsize", FIELD_ULONG },
48 { "numparent", FIELD_ULONG },
55 { "authordate", FIELD_TIME },
59 { "committerdate", FIELD_TIME },
63 { "taggerdate", FIELD_TIME },
65 { "creatordate", FIELD_TIME },
72 * An atom is a valid field atom listed above, possibly prefixed with
73 * a "*" to denote deref_tag().
75 * We parse given format string and sort specifiers, and make a list
76 * of properties that we need to extract out of objects. refinfo
77 * structure will hold an array of values extracted that can be
78 * indexed with the "atom number", which is an index into this
81 static const char **used_atom;
82 static cmp_type *used_atom_type;
83 static int used_atom_cnt, sort_atom_limit, need_tagged;
86 * Used to parse format string and sort specifiers
88 static int parse_atom(const char *atom, const char *ep)
94 if (*sp == '*' && sp < ep)
97 die("malformed field name: %.*s", (int)(ep-atom), atom);
99 /* Do we have the atom already used elsewhere? */
100 for (i = 0; i < used_atom_cnt; i++) {
101 int len = strlen(used_atom[i]);
102 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
106 /* Is the atom a valid one? */
107 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
108 int len = strlen(valid_atom[i].name);
110 * If the atom name has a colon, strip it and everything after
111 * it off - it specifies the format for this entry, and
112 * shouldn't be used for checking against the valid_atom
115 const char *formatp = strchr(sp, ':');
116 if (!formatp || ep < formatp)
118 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
122 if (ARRAY_SIZE(valid_atom) <= i)
123 die("unknown field name: %.*s", (int)(ep-atom), atom);
125 /* Add it in, including the deref prefix */
128 used_atom = xrealloc(used_atom,
129 (sizeof *used_atom) * used_atom_cnt);
130 used_atom_type = xrealloc(used_atom_type,
131 (sizeof(*used_atom_type) * used_atom_cnt));
132 used_atom[at] = xmemdupz(atom, ep - atom);
133 used_atom_type[at] = valid_atom[i].cmp_type;
138 * In a format string, find the next occurrence of %(atom).
140 static const char *find_next(const char *cp)
144 /* %( is the start of an atom;
145 * %% is a quoted per-cent.
149 else if (cp[1] == '%')
150 cp++; /* skip over two % */
151 /* otherwise this is a singleton, literal % */
159 * Make sure the format string is well formed, and parse out
162 static int verify_format(const char *format)
165 for (cp = format; *cp && (sp = find_next(cp)); ) {
166 const char *ep = strchr(sp, ')');
168 return error("malformatted format string %s", sp);
169 /* sp points at "%(" and ep points at the closing ")" */
170 parse_atom(sp + 2, ep);
177 * Given an object name, read the object data and size, and return a
178 * "struct object". If the object data we are returning is also borrowed
179 * by the "struct object" representation, set *eaten as well---it is a
180 * signal from parse_object_buffer to us not to free the buffer.
182 static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
184 enum object_type type;
185 void *buf = read_sha1_file(sha1, &type, sz);
188 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
194 /* See grab_values */
195 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
199 for (i = 0; i < used_atom_cnt; i++) {
200 const char *name = used_atom[i];
201 struct atom_value *v = &val[i];
202 if (!!deref != (*name == '*'))
206 if (!strcmp(name, "objecttype"))
207 v->s = typename(obj->type);
208 else if (!strcmp(name, "objectsize")) {
209 char *s = xmalloc(40);
210 sprintf(s, "%lu", sz);
214 else if (!strcmp(name, "objectname")) {
215 char *s = xmalloc(41);
216 strcpy(s, sha1_to_hex(obj->sha1));
222 /* See grab_values */
223 static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
226 struct tag *tag = (struct tag *) obj;
228 for (i = 0; i < used_atom_cnt; i++) {
229 const char *name = used_atom[i];
230 struct atom_value *v = &val[i];
231 if (!!deref != (*name == '*'))
235 if (!strcmp(name, "tag"))
240 static int num_parents(struct commit *commit)
242 struct commit_list *parents;
245 for (i = 0, parents = commit->parents;
247 parents = parents->next)
252 /* See grab_values */
253 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
256 struct commit *commit = (struct commit *) obj;
258 for (i = 0; i < used_atom_cnt; i++) {
259 const char *name = used_atom[i];
260 struct atom_value *v = &val[i];
261 if (!!deref != (*name == '*'))
265 if (!strcmp(name, "tree")) {
266 char *s = xmalloc(41);
267 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
270 if (!strcmp(name, "numparent")) {
271 char *s = xmalloc(40);
272 v->ul = num_parents(commit);
273 sprintf(s, "%lu", v->ul);
276 else if (!strcmp(name, "parent")) {
277 int num = num_parents(commit);
279 struct commit_list *parents;
280 char *s = xmalloc(41 * num + 1);
282 for (i = 0, parents = commit->parents;
284 parents = parents->next, i = i + 41) {
285 struct commit *parent = parents->item;
286 strcpy(s+i, sha1_to_hex(parent->object.sha1));
296 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
300 if (!strncmp(buf, who, wholen) &&
302 return buf + wholen + 1;
303 eol = strchr(buf, '\n');
308 return ""; /* end of header */
314 static const char *copy_line(const char *buf)
316 const char *eol = strchr(buf, '\n');
319 return xmemdupz(buf, eol - buf);
322 static const char *copy_name(const char *buf)
325 for (cp = buf; *cp && *cp != '\n'; cp++) {
326 if (!strncmp(cp, " <", 2))
327 return xmemdupz(buf, cp - buf);
332 static const char *copy_email(const char *buf)
334 const char *email = strchr(buf, '<');
335 const char *eoemail = strchr(email, '>');
336 if (!email || !eoemail)
338 return xmemdupz(email, eoemail + 1 - email);
341 static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
343 const char *eoemail = strstr(buf, "> ");
345 unsigned long timestamp;
347 enum date_mode date_mode = DATE_NORMAL;
351 * We got here because atomname ends in "date" or "date<something>";
352 * it's not possible that <something> is not ":<format>" because
353 * parse_atom() wouldn't have allowed it, so we can assume that no
354 * ":" means no format is specified, and use the default.
356 formatp = strchr(atomname, ':');
357 if (formatp != NULL) {
359 date_mode = parse_date_format(formatp);
364 timestamp = strtoul(eoemail + 2, &zone, 10);
365 if (timestamp == ULONG_MAX)
367 tz = strtol(zone, NULL, 10);
368 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
370 v->s = xstrdup(show_date(timestamp, tz, date_mode));
378 /* See grab_values */
379 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
382 int wholen = strlen(who);
383 const char *wholine = NULL;
385 for (i = 0; i < used_atom_cnt; i++) {
386 const char *name = used_atom[i];
387 struct atom_value *v = &val[i];
388 if (!!deref != (*name == '*'))
392 if (strncmp(who, name, wholen))
394 if (name[wholen] != 0 &&
395 strcmp(name + wholen, "name") &&
396 strcmp(name + wholen, "email") &&
397 prefixcmp(name + wholen, "date"))
400 wholine = find_wholine(who, wholen, buf, sz);
402 return; /* no point looking for it */
403 if (name[wholen] == 0)
404 v->s = copy_line(wholine);
405 else if (!strcmp(name + wholen, "name"))
406 v->s = copy_name(wholine);
407 else if (!strcmp(name + wholen, "email"))
408 v->s = copy_email(wholine);
409 else if (!prefixcmp(name + wholen, "date"))
410 grab_date(wholine, v, name);
413 /* For a tag or a commit object, if "creator" or "creatordate" is
414 * requested, do something special.
416 if (strcmp(who, "tagger") && strcmp(who, "committer"))
417 return; /* "author" for commit object is not wanted */
419 wholine = find_wholine(who, wholen, buf, sz);
422 for (i = 0; i < used_atom_cnt; i++) {
423 const char *name = used_atom[i];
424 struct atom_value *v = &val[i];
425 if (!!deref != (*name == '*'))
430 if (!prefixcmp(name, "creatordate"))
431 grab_date(wholine, v, name);
432 else if (!strcmp(name, "creator"))
433 v->s = copy_line(wholine);
437 static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
440 const char *eol = strchr(buf, '\n');
443 if (eol[1] == '\n') {
445 break; /* found end of header */
453 *sub = buf; /* first non-empty line */
454 buf = strchr(buf, '\n');
456 return; /* no body */
458 buf++; /* skip blank between subject and body */
462 /* See grab_values */
463 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
466 const char *subpos = NULL, *bodypos = NULL;
468 for (i = 0; i < used_atom_cnt; i++) {
469 const char *name = used_atom[i];
470 struct atom_value *v = &val[i];
471 if (!!deref != (*name == '*'))
475 if (strcmp(name, "subject") &&
476 strcmp(name, "body") &&
477 strcmp(name, "contents"))
480 find_subpos(buf, sz, &subpos, &bodypos);
484 if (!strcmp(name, "subject"))
485 v->s = copy_line(subpos);
486 else if (!strcmp(name, "body"))
487 v->s = xstrdup(bodypos);
488 else if (!strcmp(name, "contents"))
489 v->s = xstrdup(subpos);
493 /* We want to have empty print-string for field requests
494 * that do not apply (e.g. "authordate" for a tag object)
496 static void fill_missing_values(struct atom_value *val)
499 for (i = 0; i < used_atom_cnt; i++) {
500 struct atom_value *v = &val[i];
507 * val is a list of atom_value to hold returned values. Extract
508 * the values for atoms in used_atom array out of (obj, buf, sz).
509 * when deref is false, (obj, buf, sz) is the object that is
510 * pointed at by the ref itself; otherwise it is the object the
511 * ref (which is a tag) refers to.
513 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
515 grab_common_values(val, deref, obj, buf, sz);
518 grab_tag_values(val, deref, obj, buf, sz);
519 grab_sub_body_contents(val, deref, obj, buf, sz);
520 grab_person("tagger", val, deref, obj, buf, sz);
523 grab_commit_values(val, deref, obj, buf, sz);
524 grab_sub_body_contents(val, deref, obj, buf, sz);
525 grab_person("author", val, deref, obj, buf, sz);
526 grab_person("committer", val, deref, obj, buf, sz);
529 // grab_tree_values(val, deref, obj, buf, sz);
532 // grab_blob_values(val, deref, obj, buf, sz);
535 die("Eh? Object of type %d?", obj->type);
540 * Parse the object referred by ref, and grab needed value.
542 static void populate_value(struct refinfo *ref)
548 const unsigned char *tagged;
550 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
552 buf = get_obj(ref->objectname, &obj, &size, &eaten);
554 die("missing object %s for %s",
555 sha1_to_hex(ref->objectname), ref->refname);
557 die("parse_object_buffer failed on %s for %s",
558 sha1_to_hex(ref->objectname), ref->refname);
560 /* Fill in specials first */
561 for (i = 0; i < used_atom_cnt; i++) {
562 const char *name = used_atom[i];
563 struct atom_value *v = &ref->value[i];
564 if (!strcmp(name, "refname"))
566 else if (!strcmp(name, "*refname")) {
567 int len = strlen(ref->refname);
568 char *s = xmalloc(len + 4);
569 sprintf(s, "%s^{}", ref->refname);
574 grab_values(ref->value, 0, obj, buf, size);
578 /* If there is no atom that wants to know about tagged
579 * object, we are done.
581 if (!need_tagged || (obj->type != OBJ_TAG))
584 /* If it is a tag object, see if we use a value that derefs
585 * the object, and if we do grab the object it refers to.
587 tagged = ((struct tag *)obj)->tagged->sha1;
589 /* NEEDSWORK: This derefs tag only once, which
590 * is good to deal with chains of trust, but
591 * is not consistent with what deref_tag() does
592 * which peels the onion to the core.
594 buf = get_obj(tagged, &obj, &size, &eaten);
596 die("missing object %s for %s",
597 sha1_to_hex(tagged), ref->refname);
599 die("parse_object_buffer failed on %s for %s",
600 sha1_to_hex(tagged), ref->refname);
601 grab_values(ref->value, 1, obj, buf, size);
607 * Given a ref, return the value for the atom. This lazily gets value
608 * out of the object by calling populate value.
610 static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
614 fill_missing_values(ref->value);
616 *v = &ref->value[atom];
619 struct grab_ref_cbdata {
620 struct refinfo **grab_array;
621 const char **grab_pattern;
626 * A call-back given to for_each_ref(). It is unfortunate that we
627 * need to use global variables to pass extra information to this
630 static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
632 struct grab_ref_cbdata *cb = cb_data;
636 if (*cb->grab_pattern) {
637 const char **pattern;
638 int namelen = strlen(refname);
639 for (pattern = cb->grab_pattern; *pattern; pattern++) {
640 const char *p = *pattern;
641 int plen = strlen(p);
643 if ((plen <= namelen) &&
644 !strncmp(refname, p, plen) &&
645 (refname[plen] == '\0' ||
646 refname[plen] == '/'))
648 if (!fnmatch(p, refname, FNM_PATHNAME))
655 /* We do not open the object yet; sort may only need refname
656 * to do its job and the resulting list may yet to be pruned
659 ref = xcalloc(1, sizeof(*ref));
660 ref->refname = xstrdup(refname);
661 hashcpy(ref->objectname, sha1);
664 cb->grab_array = xrealloc(cb->grab_array,
665 sizeof(*cb->grab_array) * (cnt + 1));
666 cb->grab_array[cnt++] = ref;
671 static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
673 struct atom_value *va, *vb;
675 cmp_type cmp_type = used_atom_type[s->atom];
677 get_value(a, s->atom, &va);
678 get_value(b, s->atom, &vb);
681 cmp = strcmp(va->s, vb->s);
686 else if (va->ul == vb->ul)
692 return (s->reverse) ? -cmp : cmp;
695 static struct ref_sort *ref_sort;
696 static int compare_refs(const void *a_, const void *b_)
698 struct refinfo *a = *((struct refinfo **)a_);
699 struct refinfo *b = *((struct refinfo **)b_);
702 for (s = ref_sort; s; s = s->next) {
703 int cmp = cmp_ref_sort(s, a, b);
710 static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
713 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
716 static void print_value(struct refinfo *ref, int atom, int quote_style)
718 struct atom_value *v;
719 get_value(ref, atom, &v);
720 switch (quote_style) {
725 sq_quote_print(stdout, v->s);
728 perl_quote_print(stdout, v->s);
731 python_quote_print(stdout, v->s);
734 tcl_quote_print(stdout, v->s);
739 static int hex1(char ch)
741 if ('0' <= ch && ch <= '9')
743 else if ('a' <= ch && ch <= 'f')
744 return ch - 'a' + 10;
745 else if ('A' <= ch && ch <= 'F')
746 return ch - 'A' + 10;
749 static int hex2(const char *cp)
752 return (hex1(cp[0]) << 4) | hex1(cp[1]);
757 static void emit(const char *cp, const char *ep)
759 while (*cp && (!ep || cp < ep)) {
764 int ch = hex2(cp + 1);
777 static void show_ref(struct refinfo *info, const char *format, int quote_style)
779 const char *cp, *sp, *ep;
781 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
782 ep = strchr(sp, ')');
785 print_value(info, parse_atom(sp + 2, ep), quote_style);
788 sp = cp + strlen(cp);
794 static struct ref_sort *default_sort(void)
796 static const char cstr_name[] = "refname";
798 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
801 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
805 int opt_parse_sort(const struct option *opt, const char *arg, int unset)
807 struct ref_sort **sort_tail = opt->value;
811 if (!arg) /* should --no-sort void the list ? */
814 *sort_tail = s = xcalloc(1, sizeof(*s));
815 sort_tail = &s->next;
822 s->atom = parse_atom(arg, arg+len);
826 static char const * const for_each_ref_usage[] = {
827 "git-for-each-ref [options] [<pattern>]",
831 int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
834 const char *format = "%(objectname) %(objecttype)\t%(refname)";
835 struct ref_sort *sort = NULL, **sort_tail = &sort;
836 int maxcount = 0, quote_style;
837 int quote_shell = 0, quote_perl = 0, quote_python = 0, quote_tcl = 0;
838 struct refinfo **refs;
839 struct grab_ref_cbdata cbdata;
841 struct option opts[] = {
842 OPT_BOOLEAN('s', "shell", "e_shell, "quote placeholders suitably for shells"),
843 OPT_BOOLEAN('p', "perl", "e_perl, "quote placeholders suitably for perl"),
844 OPT_BOOLEAN( 0 , "python", "e_python, "quote placeholders suitably for python"),
845 OPT_BOOLEAN( 0 , "tcl", "e_tcl, "quote placeholders suitably for tcl"),
848 OPT_INTEGER( 0 , "count", &maxcount, "show only <n> matched refs"),
849 OPT_STRING( 0 , "format", &format, "format", "format to use for the output"),
850 OPT_CALLBACK(0 , "sort", sort_tail, "key",
851 "field name to sort on", &opt_parse_sort),
855 parse_options(argc, argv, opts, for_each_ref_usage, 0);
857 error("invalid --count argument: `%d'", maxcount);
858 usage_with_options(for_each_ref_usage, opts);
860 if (quote_shell + quote_perl + quote_python + quote_tcl > 1) {
861 error("more than one quoting style ?");
862 usage_with_options(for_each_ref_usage, opts);
864 if (verify_format(format))
865 usage_with_options(for_each_ref_usage, opts);
867 quote_style = QUOTE_SHELL * quote_shell + QUOTE_PERL * quote_perl +
868 QUOTE_PYTHON * quote_python + QUOTE_TCL * quote_tcl;
870 sort = default_sort();
871 sort_atom_limit = used_atom_cnt;
873 memset(&cbdata, 0, sizeof(cbdata));
874 cbdata.grab_pattern = argv;
875 for_each_ref(grab_single_ref, &cbdata);
876 refs = cbdata.grab_array;
877 num_refs = cbdata.grab_cnt;
879 for (i = 0; i < used_atom_cnt; i++) {
880 if (used_atom[i][0] == '*') {
886 sort_refs(sort, refs, num_refs);
888 if (!maxcount || num_refs < maxcount)
890 for (i = 0; i < maxcount; i++)
891 show_ref(refs[i], format, quote_style);