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
  11 static const char shortlog_usage[] =
  12 "git-shortlog [-n] [-s] [-e] [<commit-id>... ]";
  13
  14 static int compare_by_number(const void *a1, const void *a2)
  15 {
  16         const struct path_list_item *i1 = a1, *i2 = a2;
  17         const struct path_list *l1 = i1->util, *l2 = i2->util;
  18
  19         if (l1->nr < l2->nr)
  20                 return 1;
  21         else if (l1->nr == l2->nr)
  22                 return 0;
  23         else
  24                 return -1;
  25 }
  26
  27 static void insert_one_record(struct shortlog *log,
  28                               const char *author,
  29                               const char *oneline)
  30 {
  31         const char *dot3 = log->common_repo_prefix;
  32         char *buffer, *p;
  33         struct path_list_item *item;
  34         struct path_list *onelines;
  35         char namebuf[1024];
  36         size_t len;
  37         const char *eol;
  38         const char *boemail, *eoemail;
  39
  40         boemail = strchr(author, '<');
  41         if (!boemail)
  42                 return;
  43         eoemail = strchr(boemail, '>');
  44         if (!eoemail)
  45                 return;
  46         if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  47                 while (author < boemail && isspace(*author))
  48                         author++;
  49                 for (len = 0;
  50                      len < sizeof(namebuf) - 1 && author + len < boemail;
  51                      len++)
  52                         namebuf[len] = author[len];
  53                 while (0 < len && isspace(namebuf[len-1]))
  54                         len--;
  55                 namebuf[len] = '\0';
  56         }
  57         else
  58                 len = strlen(namebuf);
  59
  60         if (log->email) {
  61                 size_t room = sizeof(namebuf) - len - 1;
  62                 int maillen = eoemail - boemail + 1;
  63                 snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  64         }
  65
  66         buffer = xstrdup(namebuf);
  67         item = path_list_insert(buffer, &log->list);
  68         if (item->util == NULL)
  69                 item->util = xcalloc(1, sizeof(struct path_list));
  70         else
  71                 free(buffer);
  72
  73         eol = strchr(oneline, '\n');
  74         if (!eol)
  75                 eol = oneline + strlen(oneline);
  76         while (*oneline && isspace(*oneline) && *oneline != '\n')
  77                 oneline++;
  78         if (!prefixcmp(oneline, "[PATCH")) {
  79                 char *eob = strchr(oneline, ']');
  80                 if (eob && (!eol || eob < eol))
  81                         oneline = eob + 1;
  82         }
  83         while (*oneline && isspace(*oneline) && *oneline != '\n')
  84                 oneline++;
  85         len = eol - oneline;
  86         while (len && isspace(oneline[len-1]))
  87                 len--;
  88         buffer = xmemdupz(oneline, len);
  89
  90         if (dot3) {
  91                 int dot3len = strlen(dot3);
  92                 if (dot3len > 5) {
  93                         while ((p = strstr(buffer, dot3)) != NULL) {
  94                                 int taillen = strlen(p) - dot3len;
  95                                 memcpy(p, "/.../", 5);
  96                                 memmove(p + 5, p + dot3len, taillen + 1);
  97                         }
  98                 }
  99         }
 100
 101         onelines = item->util;
 102         if (onelines->nr >= onelines->alloc) {
 103                 onelines->alloc = alloc_nr(onelines->nr);
 104                 onelines->items = xrealloc(onelines->items,
 105                                 onelines->alloc
 106                                 * sizeof(struct path_list_item));
 107         }
 108
 109         onelines->items[onelines->nr].util = NULL;
 110         onelines->items[onelines->nr++].path = buffer;
 111 }
 112
 113 static void read_from_stdin(struct shortlog *log)
 114 {
 115         char author[1024], oneline[1024];
 116
 117         while (fgets(author, sizeof(author), stdin) != NULL) {
 118                 if (!(author[0] == 'A' || author[0] == 'a') ||
 119                     prefixcmp(author + 1, "uthor: "))
 120                         continue;
 121                 while (fgets(oneline, sizeof(oneline), stdin) &&
 122                        oneline[0] != '\n')
 123                         ; /* discard headers */
 124                 while (fgets(oneline, sizeof(oneline), stdin) &&
 125                        oneline[0] == '\n')
 126                         ; /* discard blanks */
 127                 insert_one_record(log, author + 8, oneline);
 128         }
 129 }
 130
 131 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 132 {
 133         const char *author = NULL, *buffer;
 134
 135         buffer = commit->buffer;
 136         while (*buffer && *buffer != '\n') {
 137                 const char *eol = strchr(buffer, '\n');
 138
 139                 if (eol == NULL)
 140                         eol = buffer + strlen(buffer);
 141                 else
 142                         eol++;
 143
 144                 if (!prefixcmp(buffer, "author "))
 145                         author = buffer + 7;
 146                 buffer = eol;
 147         }
 148         if (!author)
 149                 die("Missing author: %s",
 150                     sha1_to_hex(commit->object.sha1));
 151         if (*buffer)
 152                 buffer++;
 153         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 154 }
 155
 156 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 157 {
 158         struct commit *commit;
 159
 160         if (prepare_revision_walk(rev))
 161                 die("revision walk setup failed");
 162         while ((commit = get_revision(rev)) != NULL)
 163                 shortlog_add_commit(log, commit);
 164 }
 165
 166 static int parse_uint(char const **arg, int comma)
 167 {
 168         unsigned long ul;
 169         int ret;
 170         char *endp;
 171
 172         ul = strtoul(*arg, &endp, 10);
 173         if (endp != *arg && *endp && *endp != comma)
 174                 return -1;
 175         ret = (int) ul;
 176         if (ret != ul)
 177                 return -1;
 178         *arg = endp;
 179         if (**arg)
 180                 (*arg)++;
 181         return ret;
 182 }
 183
 184 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 185 #define DEFAULT_WRAPLEN 76
 186 #define DEFAULT_INDENT1 6
 187 #define DEFAULT_INDENT2 9
 188
 189 static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 190 {
 191         arg += 2; /* skip -w */
 192
 193         *wrap = parse_uint(&arg, ',');
 194         if (*wrap < 0)
 195                 die(wrap_arg_usage);
 196         *in1 = parse_uint(&arg, ',');
 197         if (*in1 < 0)
 198                 die(wrap_arg_usage);
 199         *in2 = parse_uint(&arg, '\0');
 200         if (*in2 < 0)
 201                 die(wrap_arg_usage);
 202
 203         if (!*wrap)
 204                 *wrap = DEFAULT_WRAPLEN;
 205         if (!*in1)
 206                 *in1 = DEFAULT_INDENT1;
 207         if (!*in2)
 208                 *in2 = DEFAULT_INDENT2;
 209         if (*wrap &&
 210             ((*in1 && *wrap <= *in1) ||
 211              (*in2 && *wrap <= *in2)))
 212                 die(wrap_arg_usage);
 213 }
 214
 215 void shortlog_init(struct shortlog *log)
 216 {
 217         memset(log, 0, sizeof(*log));
 218
 219         read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 220
 221         log->list.strdup_paths = 1;
 222         log->wrap = DEFAULT_WRAPLEN;
 223         log->in1 = DEFAULT_INDENT1;
 224         log->in2 = DEFAULT_INDENT2;
 225 }
 226
 227 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 228 {
 229         struct shortlog log;
 230         struct rev_info rev;
 231
 232         shortlog_init(&log);
 233
 234         /* since -n is a shadowed rev argument, parse our args first */
 235         while (argc > 1) {
 236                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 237                         log.sort_by_number = 1;
 238                 else if (!strcmp(argv[1], "-s") ||
 239                                 !strcmp(argv[1], "--summary"))
 240                         log.summary = 1;
 241                 else if (!strcmp(argv[1], "-e") ||
 242                          !strcmp(argv[1], "--email"))
 243                         log.email = 1;
 244                 else if (!prefixcmp(argv[1], "-w")) {
 245                         log.wrap_lines = 1;
 246                         parse_wrap_args(argv[1], &log.in1, &log.in2, &log.wrap);
 247                 }
 248                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 249                         usage(shortlog_usage);
 250                 else
 251                         break;
 252                 argv++;
 253                 argc--;
 254         }
 255         init_revisions(&rev, prefix);
 256         argc = setup_revisions(argc, argv, &rev, NULL);
 257         if (argc > 1)
 258                 die ("unrecognized argument: %s", argv[1]);
 259
 260         /* assume HEAD if from a tty */
 261         if (!rev.pending.nr && isatty(0))
 262                 add_head_to_pending(&rev);
 263         if (rev.pending.nr == 0) {
 264                 read_from_stdin(&log);
 265         }
 266         else
 267                 get_from_rev(&rev, &log);
 268
 269         shortlog_output(&log);
 270         return 0;
 271 }
 272
 273 void shortlog_output(struct shortlog *log)
 274 {
 275         int i, j;
 276         if (log->sort_by_number)
 277                 qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
 278                         compare_by_number);
 279         for (i = 0; i < log->list.nr; i++) {
 280                 struct path_list *onelines = log->list.items[i].util;
 281
 282                 if (log->summary) {
 283                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
 284                 } else {
 285                         printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
 286                         for (j = onelines->nr - 1; j >= 0; j--) {
 287                                 const char *msg = onelines->items[j].path;
 288
 289                                 if (log->wrap_lines) {
 290                                         int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 291                                         if (col != log->wrap)
 292                                                 putchar('\n');
 293                                 }
 294                                 else
 295                                         printf("      %s\n", msg);
 296                         }
 297                         putchar('\n');
 298                 }
 299
 300                 onelines->strdup_paths = 1;
 301                 path_list_clear(onelines, 1);
 302                 free(onelines);
 303                 log->list.items[i].util = NULL;
 304         }
 305
 306         log->list.strdup_paths = 1;
 307         path_list_clear(&log->list, 1);
 308         log->mailmap.strdup_paths = 1;
 309         path_list_clear(&log->mailmap, 1);
 310 }