builtin/shortlog.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "commit.h"
   4 #include "diff.h"
   5 #include "string-list.h"
   6 #include "revision.h"
   7 #include "utf8.h"
   8 #include "mailmap.h"
   9 #include "shortlog.h"
  10 #include "parse-options.h"
  11
  12 static char const * const shortlog_usage[] = {
  13         N_("git shortlog [-n] [-s] [-e] [-w] [rev-opts] [--] [<commit-id>... ]"),
  14         "",
  15         N_("[rev-opts] are documented in git-rev-list(1)"),
  16         NULL
  17 };
  18
  19 static int compare_by_number(const void *a1, const void *a2)
  20 {
  21         const struct string_list_item *i1 = a1, *i2 = a2;
  22         const struct string_list *l1 = i1->util, *l2 = i2->util;
  23
  24         if (l1->nr < l2->nr)
  25                 return 1;
  26         else if (l1->nr == l2->nr)
  27                 return 0;
  28         else
  29                 return -1;
  30 }
  31
  32 static void insert_one_record(struct shortlog *log,
  33                               const char *author,
  34                               const char *oneline)
  35 {
  36         const char *dot3 = log->common_repo_prefix;
  37         char *buffer, *p;
  38         struct string_list_item *item;
  39         char namebuf[1024];
  40         char emailbuf[1024];
  41         size_t len;
  42         const char *eol;
  43         const char *boemail, *eoemail;
  44         struct strbuf subject = STRBUF_INIT;
  45
  46         boemail = strchr(author, '<');
  47         if (!boemail)
  48                 return;
  49         eoemail = strchr(boemail, '>');
  50         if (!eoemail)
  51                 return;
  52
  53         /* copy author name to namebuf, to support matching on both name and email */
  54         memcpy(namebuf, author, boemail - author);
  55         len = boemail - author;
  56         while (len > 0 && isspace(namebuf[len-1]))
  57                 len--;
  58         namebuf[len] = 0;
  59
  60         /* copy email name to emailbuf, to allow email replacement as well */
  61         memcpy(emailbuf, boemail+1, eoemail - boemail);
  62         emailbuf[eoemail - boemail - 1] = 0;
  63
  64         if (!map_user(&log->mailmap, emailbuf, sizeof(emailbuf), namebuf, sizeof(namebuf))) {
  65                 while (author < boemail && isspace(*author))
  66                         author++;
  67                 for (len = 0;
  68                      len < sizeof(namebuf) - 1 && author + len < boemail;
  69                      len++)
  70                         namebuf[len] = author[len];
  71                 while (0 < len && isspace(namebuf[len-1]))
  72                         len--;
  73                 namebuf[len] = '\0';
  74         }
  75         else
  76                 len = strlen(namebuf);
  77
  78         if (log->email) {
  79                 size_t room = sizeof(namebuf) - len - 1;
  80                 int maillen = strlen(emailbuf);
  81                 snprintf(namebuf + len, room, " <%.*s>", maillen, emailbuf);
  82         }
  83
  84         item = string_list_insert(&log->list, namebuf);
  85         if (item->util == NULL)
  86                 item->util = xcalloc(1, sizeof(struct string_list));
  87
  88         /* Skip any leading whitespace, including any blank lines. */
  89         while (*oneline && isspace(*oneline))
  90                 oneline++;
  91         eol = strchr(oneline, '\n');
  92         if (!eol)
  93                 eol = oneline + strlen(oneline);
  94         if (!prefixcmp(oneline, "[PATCH")) {
  95                 char *eob = strchr(oneline, ']');
  96                 if (eob && (!eol || eob < eol))
  97                         oneline = eob + 1;
  98         }
  99         while (*oneline && isspace(*oneline) && *oneline != '\n')
 100                 oneline++;
 101         format_subject(&subject, oneline, " ");
 102         buffer = strbuf_detach(&subject, NULL);
 103
 104         if (dot3) {
 105                 int dot3len = strlen(dot3);
 106                 if (dot3len > 5) {
 107                         while ((p = strstr(buffer, dot3)) != NULL) {
 108                                 int taillen = strlen(p) - dot3len;
 109                                 memcpy(p, "/.../", 5);
 110                                 memmove(p + 5, p + dot3len, taillen + 1);
 111                         }
 112                 }
 113         }
 114
 115         string_list_append(item->util, buffer);
 116 }
 117
 118 static void read_from_stdin(struct shortlog *log)
 119 {
 120         char author[1024], oneline[1024];
 121
 122         while (fgets(author, sizeof(author), stdin) != NULL) {
 123                 if (!(author[0] == 'A' || author[0] == 'a') ||
 124                     prefixcmp(author + 1, "uthor: "))
 125                         continue;
 126                 while (fgets(oneline, sizeof(oneline), stdin) &&
 127                        oneline[0] != '\n')
 128                         ; /* discard headers */
 129                 while (fgets(oneline, sizeof(oneline), stdin) &&
 130                        oneline[0] == '\n')
 131                         ; /* discard blanks */
 132                 insert_one_record(log, author + 8, oneline);
 133         }
 134 }
 135
 136 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 137 {
 138         const char *author = NULL, *buffer;
 139         struct strbuf buf = STRBUF_INIT;
 140         struct strbuf ufbuf = STRBUF_INIT;
 141
 142         pp_commit_easy(CMIT_FMT_RAW, commit, &buf);
 143         buffer = buf.buf;
 144         while (*buffer && *buffer != '\n') {
 145                 const char *eol = strchr(buffer, '\n');
 146
 147                 if (eol == NULL)
 148                         eol = buffer + strlen(buffer);
 149                 else
 150                         eol++;
 151
 152                 if (!prefixcmp(buffer, "author "))
 153                         author = buffer + 7;
 154                 buffer = eol;
 155         }
 156         if (!author)
 157                 die(_("Missing author: %s"),
 158                     sha1_to_hex(commit->object.sha1));
 159         if (log->user_format) {
 160                 struct pretty_print_context ctx = {0};
 161                 ctx.fmt = CMIT_FMT_USERFORMAT;
 162                 ctx.abbrev = log->abbrev;
 163                 ctx.subject = "";
 164                 ctx.after_subject = "";
 165                 ctx.date_mode = DATE_NORMAL;
 166                 pretty_print_commit(&ctx, commit, &ufbuf);
 167                 buffer = ufbuf.buf;
 168         } else if (*buffer) {
 169                 buffer++;
 170         }
 171         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 172         strbuf_release(&ufbuf);
 173         strbuf_release(&buf);
 174 }
 175
 176 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 177 {
 178         struct commit *commit;
 179
 180         if (prepare_revision_walk(rev))
 181                 die(_("revision walk setup failed"));
 182         while ((commit = get_revision(rev)) != NULL)
 183                 shortlog_add_commit(log, commit);
 184 }
 185
 186 static int parse_uint(char const **arg, int comma, int defval)
 187 {
 188         unsigned long ul;
 189         int ret;
 190         char *endp;
 191
 192         ul = strtoul(*arg, &endp, 10);
 193         if (*endp && *endp != comma)
 194                 return -1;
 195         if (ul > INT_MAX)
 196                 return -1;
 197         ret = *arg == endp ? defval : (int)ul;
 198         *arg = *endp ? endp + 1 : endp;
 199         return ret;
 200 }
 201
 202 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 203 #define DEFAULT_WRAPLEN 76
 204 #define DEFAULT_INDENT1 6
 205 #define DEFAULT_INDENT2 9
 206
 207 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 208 {
 209         struct shortlog *log = opt->value;
 210
 211         log->wrap_lines = !unset;
 212         if (unset)
 213                 return 0;
 214         if (!arg) {
 215                 log->wrap = DEFAULT_WRAPLEN;
 216                 log->in1 = DEFAULT_INDENT1;
 217                 log->in2 = DEFAULT_INDENT2;
 218                 return 0;
 219         }
 220
 221         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 222         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 223         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 224         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 225                 return error(wrap_arg_usage);
 226         if (log->wrap &&
 227             ((log->in1 && log->wrap <= log->in1) ||
 228              (log->in2 && log->wrap <= log->in2)))
 229                 return error(wrap_arg_usage);
 230         return 0;
 231 }
 232
 233 void shortlog_init(struct shortlog *log)
 234 {
 235         memset(log, 0, sizeof(*log));
 236
 237         read_mailmap(&log->mailmap, &log->common_repo_prefix);
 238
 239         log->list.strdup_strings = 1;
 240         log->wrap = DEFAULT_WRAPLEN;
 241         log->in1 = DEFAULT_INDENT1;
 242         log->in2 = DEFAULT_INDENT2;
 243 }
 244
 245 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 246 {
 247         static struct shortlog log;
 248         static struct rev_info rev;
 249         int nongit = !startup_info->have_repository;
 250
 251         static const struct option options[] = {
 252                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 253                             N_("sort output according to the number of commits per author")),
 254                 OPT_BOOLEAN('s', "summary", &log.summary,
 255                             N_("Suppress commit descriptions, only provides commit count")),
 256                 OPT_BOOLEAN('e', "email", &log.email,
 257                             N_("Show the email address of each author")),
 258                 { OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
 259                         N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
 260                 OPT_END(),
 261         };
 262
 263         struct parse_opt_ctx_t ctx;
 264
 265         git_config(git_default_config, NULL);
 266         shortlog_init(&log);
 267         init_revisions(&rev, prefix);
 268         parse_options_start(&ctx, argc, argv, prefix, options,
 269                             PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
 270
 271         for (;;) {
 272                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 273                 case PARSE_OPT_HELP:
 274                         exit(129);
 275                 case PARSE_OPT_DONE:
 276                         goto parse_done;
 277                 }
 278                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 279         }
 280 parse_done:
 281         argc = parse_options_end(&ctx);
 282
 283         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 284                 error(_("unrecognized argument: %s"), argv[1]);
 285                 usage_with_options(shortlog_usage, options);
 286         }
 287
 288         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 289         log.abbrev = rev.abbrev;
 290
 291         /* assume HEAD if from a tty */
 292         if (!nongit && !rev.pending.nr && isatty(0))
 293                 add_head_to_pending(&rev);
 294         if (rev.pending.nr == 0) {
 295                 if (isatty(0))
 296                         fprintf(stderr, _("(reading log message from standard input)\n"));
 297                 read_from_stdin(&log);
 298         }
 299         else
 300                 get_from_rev(&rev, &log);
 301
 302         shortlog_output(&log);
 303         return 0;
 304 }
 305
 306 static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
 307                                      const struct shortlog *log)
 308 {
 309         int col = strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
 310         if (col != log->wrap)
 311                 strbuf_addch(sb, '\n');
 312 }
 313
 314 void shortlog_output(struct shortlog *log)
 315 {
 316         int i, j;
 317         struct strbuf sb = STRBUF_INIT;
 318
 319         if (log->sort_by_number)
 320                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 321                         compare_by_number);
 322         for (i = 0; i < log->list.nr; i++) {
 323                 struct string_list *onelines = log->list.items[i].util;
 324
 325                 if (log->summary) {
 326                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 327                 } else {
 328                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 329                         for (j = onelines->nr - 1; j >= 0; j--) {
 330                                 const char *msg = onelines->items[j].string;
 331
 332                                 if (log->wrap_lines) {
 333                                         strbuf_reset(&sb);
 334                                         add_wrapped_shortlog_msg(&sb, msg, log);
 335                                         fwrite(sb.buf, sb.len, 1, stdout);
 336                                 }
 337                                 else
 338                                         printf("      %s\n", msg);
 339                         }
 340                         putchar('\n');
 341                 }
 342
 343                 onelines->strdup_strings = 1;
 344                 string_list_clear(onelines, 0);
 345                 free(onelines);
 346                 log->list.items[i].util = NULL;
 347         }
 348
 349         strbuf_release(&sb);
 350         log->list.strdup_strings = 1;
 351         string_list_clear(&log->list, 1);
 352         clear_mailmap(&log->mailmap);
 353 }