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
  15 static int compare_by_number(const void *a1, const void *a2)
  16 {
  17         const struct path_list_item *i1 = a1, *i2 = a2;
  18         const struct path_list *l1 = i1->util, *l2 = i2->util;
  19
  20         if (l1->nr < l2->nr)
  21                 return 1;
  22         else if (l1->nr == l2->nr)
  23                 return 0;
  24         else
  25                 return -1;
  26 }
  27
  28 static struct path_list mailmap = {NULL, 0, 0, 0};
  29
  30 static void insert_author_oneline(struct path_list *list,
  31                 const char *author, int authorlen,
  32                 const char *oneline, int onelinelen)
  33 {
  34         const char *dot3 = common_repo_prefix;
  35         char *buffer, *p;
  36         struct path_list_item *item;
  37         struct path_list *onelines;
  38
  39         while (authorlen > 0 && isspace(author[authorlen - 1]))
  40                 authorlen--;
  41
  42         buffer = xmemdupz(author, authorlen);
  43         item = path_list_insert(buffer, list);
  44         if (item->util == NULL)
  45                 item->util = xcalloc(1, sizeof(struct path_list));
  46         else
  47                 free(buffer);
  48
  49         if (!prefixcmp(oneline, "[PATCH")) {
  50                 char *eob = strchr(oneline, ']');
  51
  52                 if (eob) {
  53                         while (isspace(eob[1]) && eob[1] != '\n')
  54                                 eob++;
  55                         if (eob - oneline < onelinelen) {
  56                                 onelinelen -= eob - oneline;
  57                                 oneline = eob;
  58                         }
  59                 }
  60         }
  61
  62         while (onelinelen > 0 && isspace(oneline[0])) {
  63                 oneline++;
  64                 onelinelen--;
  65         }
  66         while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
  67                 onelinelen--;
  68         buffer = xmemdupz(oneline, onelinelen);
  69
  70         if (dot3) {
  71                 int dot3len = strlen(dot3);
  72                 if (dot3len > 5) {
  73                         while ((p = strstr(buffer, dot3)) != NULL) {
  74                                 int taillen = strlen(p) - dot3len;
  75                                 memcpy(p, "/.../", 5);
  76                                 memmove(p + 5, p + dot3len, taillen + 1);
  77                         }
  78                 }
  79         }
  80
  81         onelines = item->util;
  82         if (onelines->nr >= onelines->alloc) {
  83                 onelines->alloc = alloc_nr(onelines->nr);
  84                 onelines->items = xrealloc(onelines->items,
  85                                 onelines->alloc
  86                                 * sizeof(struct path_list_item));
  87         }
  88
  89         onelines->items[onelines->nr].util = NULL;
  90         onelines->items[onelines->nr++].path = buffer;
  91 }
  92
  93 static void read_from_stdin(struct path_list *list)
  94 {
  95         char buffer[1024];
  96
  97         while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
  98                 char *bob;
  99                 if ((buffer[0] == 'A' || buffer[0] == 'a') &&
 100                                 !prefixcmp(buffer + 1, "uthor: ") &&
 101                                 (bob = strchr(buffer + 7, '<')) != NULL) {
 102                         char buffer2[1024], offset = 0;
 103
 104                         if (map_email(&mailmap, bob + 1, buffer, sizeof(buffer)))
 105                                 bob = buffer + strlen(buffer);
 106                         else {
 107                                 offset = 8;
 108                                 while (buffer + offset < bob &&
 109                                        isspace(bob[-1]))
 110                                         bob--;
 111                         }
 112
 113                         while (fgets(buffer2, sizeof(buffer2), stdin) &&
 114                                         buffer2[0] != '\n')
 115                                 ; /* chomp input */
 116                         if (fgets(buffer2, sizeof(buffer2), stdin)) {
 117                                 int l2 = strlen(buffer2);
 118                                 int i;
 119                                 for (i = 0; i < l2; i++)
 120                                         if (!isspace(buffer2[i]))
 121                                                 break;
 122                                 insert_author_oneline(list,
 123                                                 buffer + offset,
 124                                                 bob - buffer - offset,
 125                                                 buffer2 + i, l2 - i);
 126                         }
 127                 }
 128         }
 129 }
 130
 131 static void get_from_rev(struct rev_info *rev, struct path_list *list)
 132 {
 133         char scratch[1024];
 134         struct commit *commit;
 135
 136         prepare_revision_walk(rev);
 137         while ((commit = get_revision(rev)) != NULL) {
 138                 const char *author = NULL, *oneline, *buffer;
 139                 int authorlen = authorlen, onelinelen;
 140
 141                 /* get author and oneline */
 142                 for (buffer = commit->buffer; buffer && *buffer != '\0' &&
 143                                 *buffer != '\n'; ) {
 144                         const char *eol = strchr(buffer, '\n');
 145
 146                         if (eol == NULL)
 147                                 eol = buffer + strlen(buffer);
 148                         else
 149                                 eol++;
 150
 151                         if (!prefixcmp(buffer, "author ")) {
 152                                 char *bracket = strchr(buffer, '<');
 153
 154                                 if (bracket == NULL || bracket > eol)
 155                                         die("Invalid commit buffer: %s",
 156                                             sha1_to_hex(commit->object.sha1));
 157
 158                                 if (map_email(&mailmap, bracket + 1, scratch,
 159                                                         sizeof(scratch))) {
 160                                         author = scratch;
 161                                         authorlen = strlen(scratch);
 162                                 } else {
 163                                         if (bracket[-1] == ' ')
 164                                                 bracket--;
 165
 166                                         author = buffer + 7;
 167                                         authorlen = bracket - buffer - 7;
 168                                 }
 169                         }
 170                         buffer = eol;
 171                 }
 172
 173                 if (author == NULL)
 174                         die ("Missing author: %s",
 175                                         sha1_to_hex(commit->object.sha1));
 176
 177                 if (buffer == NULL || *buffer == '\0') {
 178                         oneline = "<none>";
 179                         onelinelen = sizeof(oneline) + 1;
 180                 } else {
 181                         char *eol;
 182
 183                         oneline = buffer + 1;
 184                         eol = strchr(oneline, '\n');
 185                         if (eol == NULL)
 186                                 onelinelen = strlen(oneline);
 187                         else
 188                                 onelinelen = eol - oneline;
 189                 }
 190
 191                 insert_author_oneline(list,
 192                                 author, authorlen, oneline, onelinelen);
 193         }
 194
 195 }
 196
 197 static int parse_uint(char const **arg, int comma)
 198 {
 199         unsigned long ul;
 200         int ret;
 201         char *endp;
 202
 203         ul = strtoul(*arg, &endp, 10);
 204         if (endp != *arg && *endp && *endp != comma)
 205                 return -1;
 206         ret = (int) ul;
 207         if (ret != ul)
 208                 return -1;
 209         *arg = endp;
 210         if (**arg)
 211                 (*arg)++;
 212         return ret;
 213 }
 214
 215 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 216 #define DEFAULT_WRAPLEN 76
 217 #define DEFAULT_INDENT1 6
 218 #define DEFAULT_INDENT2 9
 219
 220 static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 221 {
 222         arg += 2; /* skip -w */
 223
 224         *wrap = parse_uint(&arg, ',');
 225         if (*wrap < 0)
 226                 die(wrap_arg_usage);
 227         *in1 = parse_uint(&arg, ',');
 228         if (*in1 < 0)
 229                 die(wrap_arg_usage);
 230         *in2 = parse_uint(&arg, '\0');
 231         if (*in2 < 0)
 232                 die(wrap_arg_usage);
 233
 234         if (!*wrap)
 235                 *wrap = DEFAULT_WRAPLEN;
 236         if (!*in1)
 237                 *in1 = DEFAULT_INDENT1;
 238         if (!*in2)
 239                 *in2 = DEFAULT_INDENT2;
 240         if (*wrap &&
 241             ((*in1 && *wrap <= *in1) ||
 242              (*in2 && *wrap <= *in2)))
 243                 die(wrap_arg_usage);
 244 }
 245
 246 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 247 {
 248         struct rev_info rev;
 249         struct path_list list = { NULL, 0, 0, 1 };
 250         int i, j, sort_by_number = 0, summary = 0;
 251         int wrap_lines = 0;
 252         int wrap = DEFAULT_WRAPLEN;
 253         int in1 = DEFAULT_INDENT1;
 254         int in2 = DEFAULT_INDENT2;
 255
 256         /* since -n is a shadowed rev argument, parse our args first */
 257         while (argc > 1) {
 258                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 259                         sort_by_number = 1;
 260                 else if (!strcmp(argv[1], "-s") ||
 261                                 !strcmp(argv[1], "--summary"))
 262                         summary = 1;
 263                 else if (!prefixcmp(argv[1], "-w")) {
 264                         wrap_lines = 1;
 265                         parse_wrap_args(argv[1], &in1, &in2, &wrap);
 266                 }
 267                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 268                         usage(shortlog_usage);
 269                 else
 270                         break;
 271                 argv++;
 272                 argc--;
 273         }
 274         init_revisions(&rev, prefix);
 275         argc = setup_revisions(argc, argv, &rev, NULL);
 276         if (argc > 1)
 277                 die ("unrecognized argument: %s", argv[1]);
 278
 279         read_mailmap(&mailmap, ".mailmap", &common_repo_prefix);
 280
 281         if (rev.pending.nr == 0) {
 282                 if (isatty(0))
 283                         fprintf(stderr, "(reading log to summarize from standard input)\n");
 284                 read_from_stdin(&list);
 285         }
 286         else
 287                 get_from_rev(&rev, &list);
 288
 289         if (sort_by_number)
 290                 qsort(list.items, list.nr, sizeof(struct path_list_item),
 291                         compare_by_number);
 292
 293         for (i = 0; i < list.nr; i++) {
 294                 struct path_list *onelines = list.items[i].util;
 295
 296                 if (summary) {
 297                         printf("%s: %d\n", list.items[i].path, onelines->nr);
 298                 } else {
 299                         printf("%s (%d):\n", 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 (wrap_lines) {
 304                                         int col = print_wrapped_text(msg, in1, in2, wrap);
 305                                         if (col != 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                 list.items[i].util = NULL;
 318         }
 319
 320         list.strdup_paths = 1;
 321         path_list_clear(&list, 1);
 322         mailmap.strdup_paths = 1;
 323         path_list_clear(&mailmap, 1);
 324
 325         return 0;
 326 }