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