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 <string.h>
   8
   9 static const char shortlog_usage[] =
  10 "git-shortlog [-n] [-s] [<commit-id>... ]\n";
  11
  12 static int compare_by_number(const void *a1, const void *a2)
  13 {
  14         const struct path_list_item *i1 = a1, *i2 = a2;
  15         const struct path_list *l1 = i1->util, *l2 = i2->util;
  16
  17         if (l1->nr < l2->nr)
  18                 return -1;
  19         else if (l1->nr == l2->nr)
  20                 return 0;
  21         else
  22                 return +1;
  23 }
  24
  25 static struct path_list mailmap = {NULL, 0, 0, 0};
  26
  27 static int read_mailmap(const char *filename)
  28 {
  29         char buffer[1024];
  30         FILE *f = fopen(filename, "r");
  31
  32         if (f == NULL)
  33                 return 1;
  34         while (fgets(buffer, sizeof(buffer), f) != NULL) {
  35                 char *end_of_name, *left_bracket, *right_bracket;
  36                 char *name, *email;
  37                 if (buffer[0] == '#')
  38                         continue;
  39                 if ((left_bracket = strchr(buffer, '<')) == NULL)
  40                         continue;
  41                 if ((right_bracket = strchr(left_bracket + 1, '>')) == NULL)
  42                         continue;
  43                 if (right_bracket == left_bracket + 1)
  44                         continue;
  45                 for (end_of_name = left_bracket; end_of_name != buffer
  46                                 && isspace(end_of_name[-1]); end_of_name--)
  47                         /* keep on looking */
  48                 if (end_of_name == buffer)
  49                         continue;
  50                 name = xmalloc(end_of_name - buffer + 1);
  51                 strlcpy(name, buffer, end_of_name - buffer + 1);
  52                 email = xmalloc(right_bracket - left_bracket);
  53                 strlcpy(email, left_bracket + 1, right_bracket - left_bracket);
  54                 path_list_insert(email, &mailmap)->util = name;
  55         }
  56         fclose(f);
  57         return 0;
  58 }
  59
  60 static int map_email(char *email, char *name, int maxlen)
  61 {
  62         char *p;
  63         struct path_list_item *item;
  64
  65         /* autocomplete common developers */
  66         p = strchr(email, '>');
  67         if (!p)
  68                 return 0;
  69
  70         *p = '\0';
  71         item = path_list_lookup(email, &mailmap);
  72         if (item != NULL) {
  73                 const char *realname = (const char *)item->util;
  74                 strncpy(name, realname, maxlen);
  75                 return 1;
  76         }
  77         return 0;
  78 }
  79
  80 static void insert_author_oneline(struct path_list *list,
  81                 const char *author, int authorlen,
  82                 const char *oneline, int onelinelen)
  83 {
  84         const char *dot3 = "/pub/scm/linux/kernel/git/";
  85         char *buffer, *p;
  86         struct path_list_item *item;
  87         struct path_list *onelines;
  88
  89         while (authorlen > 0 && isspace(author[authorlen - 1]))
  90                 authorlen--;
  91
  92         buffer = xmalloc(authorlen + 1);
  93         memcpy(buffer, author, authorlen);
  94         buffer[authorlen] = '\0';
  95
  96         item = path_list_insert(buffer, list);
  97         if (item->util == NULL)
  98                 item->util = xcalloc(1, sizeof(struct path_list));
  99         else
 100                 free(buffer);
 101
 102         if (!strncmp(oneline, "[PATCH", 6)) {
 103                 char *eob = strchr(oneline, ']');
 104
 105                 if (eob) {
 106                         while (isspace(eob[1]) && eob[1] != '\n')
 107                                 eob++;
 108                         if (eob - oneline < onelinelen) {
 109                                 onelinelen -= eob - oneline;
 110                                 oneline = eob;
 111                         }
 112                 }
 113         }
 114
 115         while (onelinelen > 0 && isspace(oneline[0])) {
 116                 oneline++;
 117                 onelinelen--;
 118         }
 119
 120         while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
 121                 onelinelen--;
 122
 123         buffer = xmalloc(onelinelen + 1);
 124         memcpy(buffer, oneline, onelinelen);
 125         buffer[onelinelen] = '\0';
 126
 127         while ((p = strstr(buffer, dot3)) != NULL) {
 128                 memcpy(p, "...", 3);
 129                 strcpy(p + 2, p + sizeof(dot3) - 1);
 130         }
 131
 132
 133         onelines = item->util;
 134         if (onelines->nr >= onelines->alloc) {
 135                 onelines->alloc = alloc_nr(onelines->nr);
 136                 onelines->items = xrealloc(onelines->items,
 137                                 onelines->alloc
 138                                 * sizeof(struct path_list_item));
 139         }
 140
 141         onelines->items[onelines->nr].util = NULL;
 142         onelines->items[onelines->nr++].path = buffer;
 143 }
 144
 145 static void read_from_stdin(struct path_list *list)
 146 {
 147         char buffer[1024];
 148
 149         while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
 150                 char *bob;
 151                 if ((buffer[0] == 'A' || buffer[0] == 'a') &&
 152                                 !strncmp(buffer + 1, "uthor: ", 7) &&
 153                                 (bob = strchr(buffer + 7, '<')) != NULL) {
 154                         char buffer2[1024], offset = 0;
 155
 156                         if (map_email(bob + 1, buffer, sizeof(buffer)))
 157                                 bob = buffer + strlen(buffer);
 158                         else {
 159                                 offset = 8;
 160                                 while (isspace(bob[-1]))
 161                                         bob--;
 162                         }
 163
 164                         while (fgets(buffer2, sizeof(buffer2), stdin) &&
 165                                         buffer2[0] != '\n')
 166                                 ; /* chomp input */
 167                         if (fgets(buffer2, sizeof(buffer2), stdin))
 168                                 insert_author_oneline(list,
 169                                                 buffer + offset,
 170                                                 bob - buffer - offset,
 171                                                 buffer2, strlen(buffer2));
 172                 }
 173         }
 174 }
 175
 176 static void get_from_rev(struct rev_info *rev, struct path_list *list)
 177 {
 178         char scratch[1024];
 179         struct commit *commit;
 180
 181         prepare_revision_walk(rev);
 182         while ((commit = get_revision(rev)) != NULL) {
 183                 char *author = NULL, *oneline, *buffer;
 184                 int authorlen = authorlen, onelinelen;
 185
 186                 /* get author and oneline */
 187                 for (buffer = commit->buffer; buffer && *buffer != '\0' &&
 188                                 *buffer != '\n'; ) {
 189                         char *eol = strchr(buffer, '\n');
 190
 191                         if (eol == NULL)
 192                                 eol = buffer + strlen(buffer);
 193                         else
 194                                 eol++;
 195
 196                         if (!strncmp(buffer, "author ", 7)) {
 197                                 char *bracket = strchr(buffer, '<');
 198
 199                                 if (bracket == NULL || bracket > eol)
 200                                         die("Invalid commit buffer: %s",
 201                                             sha1_to_hex(commit->object.sha1));
 202
 203                                 if (map_email(bracket + 1, scratch,
 204                                                         sizeof(scratch))) {
 205                                         author = scratch;
 206                                         authorlen = strlen(scratch);
 207                                 } else {
 208                                         while (bracket[-1] == ' ')
 209                                                 bracket--;
 210
 211                                         author = buffer + 7;
 212                                         authorlen = bracket - buffer - 7;
 213                                 }
 214                         }
 215                         buffer = eol;
 216                 }
 217
 218                 if (author == NULL)
 219                         die ("Missing author: %s",
 220                                         sha1_to_hex(commit->object.sha1));
 221
 222                 if (buffer == NULL || *buffer == '\0') {
 223                         oneline = "<none>";
 224                         onelinelen = sizeof(oneline) + 1;
 225                 } else {
 226                         char *eol;
 227
 228                         oneline = buffer + 1;
 229                         eol = strchr(oneline, '\n');
 230                         if (eol == NULL)
 231                                 onelinelen = strlen(oneline);
 232                         else
 233                                 onelinelen = eol - oneline;
 234                 }
 235
 236                 insert_author_oneline(list,
 237                                 author, authorlen, oneline, onelinelen);
 238         }
 239
 240 }
 241
 242 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 243 {
 244         struct rev_info rev;
 245         struct path_list list = { NULL, 0, 0, 1 };
 246         int i, j, sort_by_number = 0, summary = 0;
 247
 248         init_revisions(&rev, prefix);
 249         argc = setup_revisions(argc, argv, &rev, NULL);
 250         while (argc > 1) {
 251                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 252                         sort_by_number = 1;
 253                 else if (!strcmp(argv[1], "-s") ||
 254                                 !strcmp(argv[1], "--summary"))
 255                         summary = 1;
 256                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 257                         usage(shortlog_usage);
 258                 else
 259                         die ("unrecognized argument: %s", argv[1]);
 260                 argv++;
 261                 argc--;
 262         }
 263
 264         if (!access(".mailmap", R_OK))
 265                 read_mailmap(".mailmap");
 266
 267         if (rev.pending.nr == 1)
 268                 die ("Need a range!");
 269         else if (rev.pending.nr == 0)
 270                 read_from_stdin(&list);
 271         else
 272                 get_from_rev(&rev, &list);
 273
 274         if (sort_by_number)
 275                 qsort(list.items, sizeof(struct path_list_item), list.nr,
 276                         compare_by_number);
 277
 278         for (i = 0; i < list.nr; i++) {
 279                 struct path_list *onelines = list.items[i].util;
 280
 281                 printf("%s (%d):\n", list.items[i].path, onelines->nr);
 282                 if (!summary) {
 283                         for (j = onelines->nr - 1; j >= 0; j--)
 284                                 printf("      %s\n", onelines->items[j].path);
 285                         printf("\n");
 286                 }
 287
 288                 onelines->strdup_paths = 1;
 289                 path_list_clear(onelines, 1);
 290                 free(onelines);
 291                 list.items[i].util = NULL;
 292         }
 293
 294         list.strdup_paths = 1;
 295         path_list_clear(&list, 1);
 296         mailmap.strdup_paths = 1;
 297         path_list_clear(&mailmap, 1);
 298
 299         return 0;
 300 }
 301