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] [-e] [<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         /* Skip any leading whitespace, including any blank lines. */
  78         while (*oneline && isspace(*oneline))
  79                 oneline++;
  80         eol = strchr(oneline, '\n');
  81         if (!eol)
  82                 eol = oneline + strlen(oneline);
  83         if (!prefixcmp(oneline, "[PATCH")) {
  84                 char *eob = strchr(oneline, ']');
  85                 if (eob && (!eol || eob < eol))
  86                         oneline = eob + 1;
  87         }
  88         while (*oneline && isspace(*oneline) && *oneline != '\n')
  89                 oneline++;
  90         len = eol - oneline;
  91         while (len && isspace(oneline[len-1]))
  92                 len--;
  93         buffer = xmemdupz(oneline, len);
  94
  95         if (dot3) {
  96                 int dot3len = strlen(dot3);
  97                 if (dot3len > 5) {
  98                         while ((p = strstr(buffer, dot3)) != NULL) {
  99                                 int taillen = strlen(p) - dot3len;
 100                                 memcpy(p, "/.../", 5);
 101                                 memmove(p + 5, p + dot3len, taillen + 1);
 102                         }
 103                 }
 104         }
 105
 106         onelines = item->util;
 107         if (onelines->nr >= onelines->alloc) {
 108                 onelines->alloc = alloc_nr(onelines->nr);
 109                 onelines->items = xrealloc(onelines->items,
 110                                 onelines->alloc
 111                                 * sizeof(struct path_list_item));
 112         }
 113
 114         onelines->items[onelines->nr].util = NULL;
 115         onelines->items[onelines->nr++].path = buffer;
 116 }
 117
 118 static void read_from_stdin(struct path_list *list)
 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(list, author + 8, oneline);
 133         }
 134 }
 135
 136 static void get_from_rev(struct rev_info *rev, struct path_list *list)
 137 {
 138         struct commit *commit;
 139
 140         prepare_revision_walk(rev);
 141         while ((commit = get_revision(rev)) != NULL) {
 142                 const char *author = NULL, *buffer;
 143
 144                 buffer = commit->buffer;
 145                 while (*buffer && *buffer != '\n') {
 146                         const char *eol = strchr(buffer, '\n');
 147
 148                         if (eol == NULL)
 149                                 eol = buffer + strlen(buffer);
 150                         else
 151                                 eol++;
 152
 153                         if (!prefixcmp(buffer, "author "))
 154                                 author = buffer + 7;
 155                         buffer = eol;
 156                 }
 157                 if (!author)
 158                         die("Missing author: %s",
 159                             sha1_to_hex(commit->object.sha1));
 160                 if (*buffer)
 161                         buffer++;
 162                 insert_one_record(list, author, !*buffer ? "<none>" : buffer);
 163         }
 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 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 216 {
 217         struct rev_info rev;
 218         struct path_list list = { NULL, 0, 0, 1 };
 219         int i, j, sort_by_number = 0, summary = 0;
 220         int wrap_lines = 0;
 221         int wrap = DEFAULT_WRAPLEN;
 222         int in1 = DEFAULT_INDENT1;
 223         int in2 = DEFAULT_INDENT2;
 224
 225         /* since -n is a shadowed rev argument, parse our args first */
 226         while (argc > 1) {
 227                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 228                         sort_by_number = 1;
 229                 else if (!strcmp(argv[1], "-s") ||
 230                                 !strcmp(argv[1], "--summary"))
 231                         summary = 1;
 232                 else if (!strcmp(argv[1], "-e") ||
 233                          !strcmp(argv[1], "--email"))
 234                         email = 1;
 235                 else if (!prefixcmp(argv[1], "-w")) {
 236                         wrap_lines = 1;
 237                         parse_wrap_args(argv[1], &in1, &in2, &wrap);
 238                 }
 239                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 240                         usage(shortlog_usage);
 241                 else
 242                         break;
 243                 argv++;
 244                 argc--;
 245         }
 246         init_revisions(&rev, prefix);
 247         argc = setup_revisions(argc, argv, &rev, NULL);
 248         if (argc > 1)
 249                 die ("unrecognized argument: %s", argv[1]);
 250
 251         read_mailmap(&mailmap, ".mailmap", &common_repo_prefix);
 252
 253         /* assume HEAD if from a tty */
 254         if (!rev.pending.nr && isatty(0))
 255                 add_head_to_pending(&rev);
 256         if (rev.pending.nr == 0) {
 257                 read_from_stdin(&list);
 258         }
 259         else
 260                 get_from_rev(&rev, &list);
 261
 262         if (sort_by_number)
 263                 qsort(list.items, list.nr, sizeof(struct path_list_item),
 264                         compare_by_number);
 265
 266         for (i = 0; i < list.nr; i++) {
 267                 struct path_list *onelines = list.items[i].util;
 268
 269                 if (summary) {
 270                         printf("%6d\t%s\n", onelines->nr, list.items[i].path);
 271                 } else {
 272                         printf("%s (%d):\n", list.items[i].path, onelines->nr);
 273                         for (j = onelines->nr - 1; j >= 0; j--) {
 274                                 const char *msg = onelines->items[j].path;
 275
 276                                 if (wrap_lines) {
 277                                         int col = print_wrapped_text(msg, in1, in2, wrap);
 278                                         if (col != wrap)
 279                                                 putchar('\n');
 280                                 }
 281                                 else
 282                                         printf("      %s\n", msg);
 283                         }
 284                         putchar('\n');
 285                 }
 286
 287                 onelines->strdup_paths = 1;
 288                 path_list_clear(onelines, 1);
 289                 free(onelines);
 290                 list.items[i].util = NULL;
 291         }
 292
 293         list.strdup_paths = 1;
 294         path_list_clear(&list, 1);
 295         mailmap.strdup_paths = 1;
 296         path_list_clear(&mailmap, 1);
 297
 298         return 0;
 299 }