builtin-shortlog.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "commit.h"
   4 #include "diff.h"
   5 #include "path-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         "git-shortlog [-n] [-s] [-e] [-w] [rev-opts] [--] [<commit-id>... ]",
  14         "",
  15         "[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 path_list_item *i1 = a1, *i2 = a2;
  22         const struct path_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 path_list_item *item;
  39         struct path_list *onelines;
  40         char namebuf[1024];
  41         size_t len;
  42         const char *eol;
  43         const char *boemail, *eoemail;
  44
  45         boemail = strchr(author, '<');
  46         if (!boemail)
  47                 return;
  48         eoemail = strchr(boemail, '>');
  49         if (!eoemail)
  50                 return;
  51         if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  52                 while (author < boemail && isspace(*author))
  53                         author++;
  54                 for (len = 0;
  55                      len < sizeof(namebuf) - 1 && author + len < boemail;
  56                      len++)
  57                         namebuf[len] = author[len];
  58                 while (0 < len && isspace(namebuf[len-1]))
  59                         len--;
  60                 namebuf[len] = '\0';
  61         }
  62         else
  63                 len = strlen(namebuf);
  64
  65         if (log->email) {
  66                 size_t room = sizeof(namebuf) - len - 1;
  67                 int maillen = eoemail - boemail + 1;
  68                 snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  69         }
  70
  71         buffer = xstrdup(namebuf);
  72         item = path_list_insert(buffer, &log->list);
  73         if (item->util == NULL)
  74                 item->util = xcalloc(1, sizeof(struct path_list));
  75         else
  76                 free(buffer);
  77
  78         /* Skip any leading whitespace, including any blank lines. */
  79         while (*oneline && isspace(*oneline))
  80                 oneline++;
  81         eol = strchr(oneline, '\n');
  82         if (!eol)
  83                 eol = oneline + strlen(oneline);
  84         if (!prefixcmp(oneline, "[PATCH")) {
  85                 char *eob = strchr(oneline, ']');
  86                 if (eob && (!eol || eob < eol))
  87                         oneline = eob + 1;
  88         }
  89         while (*oneline && isspace(*oneline) && *oneline != '\n')
  90                 oneline++;
  91         len = eol - oneline;
  92         while (len && isspace(oneline[len-1]))
  93                 len--;
  94         buffer = xmemdupz(oneline, len);
  95
  96         if (dot3) {
  97                 int dot3len = strlen(dot3);
  98                 if (dot3len > 5) {
  99                         while ((p = strstr(buffer, dot3)) != NULL) {
 100                                 int taillen = strlen(p) - dot3len;
 101                                 memcpy(p, "/.../", 5);
 102                                 memmove(p + 5, p + dot3len, taillen + 1);
 103                         }
 104                 }
 105         }
 106
 107         onelines = item->util;
 108         if (onelines->nr >= onelines->alloc) {
 109                 onelines->alloc = alloc_nr(onelines->nr);
 110                 onelines->items = xrealloc(onelines->items,
 111                                 onelines->alloc
 112                                 * sizeof(struct path_list_item));
 113         }
 114
 115         onelines->items[onelines->nr].util = NULL;
 116         onelines->items[onelines->nr++].path = buffer;
 117 }
 118
 119 static void read_from_stdin(struct shortlog *log)
 120 {
 121         char author[1024], oneline[1024];
 122
 123         while (fgets(author, sizeof(author), stdin) != NULL) {
 124                 if (!(author[0] == 'A' || author[0] == 'a') ||
 125                     prefixcmp(author + 1, "uthor: "))
 126                         continue;
 127                 while (fgets(oneline, sizeof(oneline), stdin) &&
 128                        oneline[0] != '\n')
 129                         ; /* discard headers */
 130                 while (fgets(oneline, sizeof(oneline), stdin) &&
 131                        oneline[0] == '\n')
 132                         ; /* discard blanks */
 133                 insert_one_record(log, author + 8, oneline);
 134         }
 135 }
 136
 137 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 138 {
 139         const char *author = NULL, *buffer;
 140
 141         buffer = commit->buffer;
 142         while (*buffer && *buffer != '\n') {
 143                 const char *eol = strchr(buffer, '\n');
 144
 145                 if (eol == NULL)
 146                         eol = buffer + strlen(buffer);
 147                 else
 148                         eol++;
 149
 150                 if (!prefixcmp(buffer, "author "))
 151                         author = buffer + 7;
 152                 buffer = eol;
 153         }
 154         if (!author)
 155                 die("Missing author: %s",
 156                     sha1_to_hex(commit->object.sha1));
 157         if (*buffer)
 158                 buffer++;
 159         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 160 }
 161
 162 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 163 {
 164         struct commit *commit;
 165
 166         if (prepare_revision_walk(rev))
 167                 die("revision walk setup failed");
 168         while ((commit = get_revision(rev)) != NULL)
 169                 shortlog_add_commit(log, commit);
 170 }
 171
 172 static int parse_uint(char const **arg, int comma, int defval)
 173 {
 174         unsigned long ul;
 175         int ret;
 176         char *endp;
 177
 178         ul = strtoul(*arg, &endp, 10);
 179         if (*endp && *endp != comma)
 180                 return -1;
 181         if (ul > INT_MAX)
 182                 return -1;
 183         ret = *arg == endp ? defval : (int)ul;
 184         *arg = *endp ? endp + 1 : endp;
 185         return ret;
 186 }
 187
 188 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 189 #define DEFAULT_WRAPLEN 76
 190 #define DEFAULT_INDENT1 6
 191 #define DEFAULT_INDENT2 9
 192
 193 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 194 {
 195         struct shortlog *log = opt->value;
 196
 197         log->wrap_lines = !unset;
 198         if (unset)
 199                 return 0;
 200         if (!arg) {
 201                 log->wrap = DEFAULT_WRAPLEN;
 202                 log->in1 = DEFAULT_INDENT1;
 203                 log->in2 = DEFAULT_INDENT2;
 204                 return 0;
 205         }
 206
 207         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 208         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 209         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 210         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 211                 return error(wrap_arg_usage);
 212         if (log->wrap &&
 213             ((log->in1 && log->wrap <= log->in1) ||
 214              (log->in2 && log->wrap <= log->in2)))
 215                 return error(wrap_arg_usage);
 216         return 0;
 217 }
 218
 219 void shortlog_init(struct shortlog *log)
 220 {
 221         memset(log, 0, sizeof(*log));
 222
 223         read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 224
 225         log->list.strdup_paths = 1;
 226         log->wrap = DEFAULT_WRAPLEN;
 227         log->in1 = DEFAULT_INDENT1;
 228         log->in2 = DEFAULT_INDENT2;
 229 }
 230
 231 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 232 {
 233         static struct shortlog log;
 234         static struct rev_info rev;
 235         int nongit;
 236
 237         static const struct option options[] = {
 238                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 239                             "sort output according to the number of commits per author"),
 240                 OPT_BOOLEAN('s', "summary", &log.summary,
 241                             "Suppress commit descriptions, only provides commit count"),
 242                 OPT_BOOLEAN('e', "email", &log.email,
 243                             "Show the email address of each author"),
 244                 { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
 245                         "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
 246                 OPT_END(),
 247         };
 248
 249         struct parse_opt_ctx_t ctx;
 250
 251         prefix = setup_git_directory_gently(&nongit);
 252         shortlog_init(&log);
 253         init_revisions(&rev, prefix);
 254         parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
 255                             PARSE_OPT_KEEP_ARGV0);
 256
 257         for (;;) {
 258                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 259                 case PARSE_OPT_HELP:
 260                         exit(129);
 261                 case PARSE_OPT_DONE:
 262                         goto parse_done;
 263                 }
 264                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 265         }
 266 parse_done:
 267         argc = parse_options_end(&ctx);
 268
 269         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 270                 error("unrecognized argument: %s", argv[1]);
 271                 usage_with_options(shortlog_usage, options);
 272         }
 273
 274         /* assume HEAD if from a tty */
 275         if (!nongit && !rev.pending.nr && isatty(0))
 276                 add_head_to_pending(&rev);
 277         if (rev.pending.nr == 0) {
 278                 read_from_stdin(&log);
 279         }
 280         else
 281                 get_from_rev(&rev, &log);
 282
 283         shortlog_output(&log);
 284         return 0;
 285 }
 286
 287 void shortlog_output(struct shortlog *log)
 288 {
 289         int i, j;
 290         if (log->sort_by_number)
 291                 qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
 292                         compare_by_number);
 293         for (i = 0; i < log->list.nr; i++) {
 294                 struct path_list *onelines = log->list.items[i].util;
 295
 296                 if (log->summary) {
 297                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
 298                 } else {
 299                         printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
 300                         for (j = onelines->nr - 1; j >= 0; j--) {
 301                                 const char *msg = onelines->items[j].path;
 302
 303                                 if (log->wrap_lines) {
 304                                         int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 305                                         if (col != log->wrap)
 306                                                 putchar('\n');
 307                                 }
 308                                 else
 309                                         printf("      %s\n", msg);
 310                         }
 311                         putchar('\n');
 312                 }
 313
 314                 onelines->strdup_paths = 1;
 315                 path_list_clear(onelines, 1);
 316                 free(onelines);
 317                 log->list.items[i].util = NULL;
 318         }
 319
 320         log->list.strdup_paths = 1;
 321         path_list_clear(&log->list, 1);
 322         log->mailmap.strdup_paths = 1;
 323         path_list_clear(&log->mailmap, 1);
 324 }