git/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 = xmalloc(authorlen + 1);
  43         memcpy(buffer, author, authorlen);
  44         buffer[authorlen] = '\0';
  45
  46         item = path_list_insert(buffer, list);
  47         if (item->util == NULL)
  48                 item->util = xcalloc(1, sizeof(struct path_list));
  49         else
  50                 free(buffer);
  51
  52         if (!prefixcmp(oneline, "[PATCH")) {
  53                 char *eob = strchr(oneline, ']');
  54
  55                 if (eob) {
  56                         while (isspace(eob[1]) && eob[1] != '\n')
  57                                 eob++;
  58                         if (eob - oneline < onelinelen) {
  59                                 onelinelen -= eob - oneline;
  60                                 oneline = eob;
  61                         }
  62                 }
  63         }
  64
  65         while (onelinelen > 0 && isspace(oneline[0])) {
  66                 oneline++;
  67                 onelinelen--;
  68         }
  69
  70         while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
  71                 onelinelen--;
  72
  73         buffer = xmalloc(onelinelen + 1);
  74         memcpy(buffer, oneline, onelinelen);
  75         buffer[onelinelen] = '\0';
  76
  77         if (dot3) {
  78                 int dot3len = strlen(dot3);
  79                 if (dot3len > 5) {
  80                         while ((p = strstr(buffer, dot3)) != NULL) {
  81                                 int taillen = strlen(p) - dot3len;
  82                                 memcpy(p, "/.../", 5);
  83                                 memmove(p + 5, p + dot3len, taillen + 1);
  84                         }
  85                 }
  86         }
  87
  88         onelines = item->util;
  89         if (onelines->nr >= onelines->alloc) {
  90                 onelines->alloc = alloc_nr(onelines->nr);
  91                 onelines->items = xrealloc(onelines->items,
  92                                 onelines->alloc
  93                                 * sizeof(struct path_list_item));
  94         }
  95
  96         onelines->items[onelines->nr].util = NULL;
  97         onelines->items[onelines->nr++].path = buffer;
  98 }
  99
 100 static void read_from_stdin(struct path_list *list)
 101 {
 102         char buffer[1024];
 103
 104         while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
 105                 char *bob;
 106                 if ((buffer[0] == 'A' || buffer[0] == 'a') &&
 107                                 !prefixcmp(buffer + 1, "uthor: ") &&
 108                                 (bob = strchr(buffer + 7, '<')) != NULL) {
 109                         char buffer2[1024], offset = 0;
 110
 111                         if (map_email(&mailmap, bob + 1, buffer, sizeof(buffer)))
 112                                 bob = buffer + strlen(buffer);
 113                         else {
 114                                 offset = 8;
 115                                 while (buffer + offset < bob &&
 116                                        isspace(bob[-1]))
 117                                         bob--;
 118                         }
 119
 120                         while (fgets(buffer2, sizeof(buffer2), stdin) &&
 121                                         buffer2[0] != '\n')
 122                                 ; /* chomp input */
 123                         if (fgets(buffer2, sizeof(buffer2), stdin)) {
 124                                 int l2 = strlen(buffer2);
 125                                 int i;
 126                                 for (i = 0; i < l2; i++)
 127                                         if (!isspace(buffer2[i]))
 128                                                 break;
 129                                 insert_author_oneline(list,
 130                                                 buffer + offset,
 131                                                 bob - buffer - offset,
 132                                                 buffer2 + i, l2 - i);
 133                         }
 134                 }
 135         }
 136 }
 137
 138 static void get_from_rev(struct rev_info *rev, struct path_list *list)
 139 {
 140         char scratch[1024];
 141         struct commit *commit;
 142
 143         prepare_revision_walk(rev);
 144         while ((commit = get_revision(rev)) != NULL) {
 145                 const char *author = NULL, *oneline, *buffer;
 146                 int authorlen = authorlen, onelinelen;
 147
 148                 /* get author and oneline */
 149                 for (buffer = commit->buffer; buffer && *buffer != '\0' &&
 150                                 *buffer != '\n'; ) {
 151                         const char *eol = strchr(buffer, '\n');
 152
 153                         if (eol == NULL)
 154                                 eol = buffer + strlen(buffer);
 155                         else
 156                                 eol++;
 157
 158                         if (!prefixcmp(buffer, "author ")) {
 159                                 char *bracket = strchr(buffer, '<');
 160
 161                                 if (bracket == NULL || bracket > eol)
 162                                         die("Invalid commit buffer: %s",
 163                                             sha1_to_hex(commit->object.sha1));
 164
 165                                 if (map_email(&mailmap, bracket + 1, scratch,
 166                                                         sizeof(scratch))) {
 167                                         author = scratch;
 168                                         authorlen = strlen(scratch);
 169                                 } else {
 170                                         if (bracket[-1] == ' ')
 171                                                 bracket--;
 172
 173                                         author = buffer + 7;
 174                                         authorlen = bracket - buffer - 7;
 175                                 }
 176                         }
 177                         buffer = eol;
 178                 }
 179
 180                 if (author == NULL)
 181                         die ("Missing author: %s",
 182                                         sha1_to_hex(commit->object.sha1));
 183
 184                 if (buffer == NULL || *buffer == '\0') {
 185                         oneline = "<none>";
 186                         onelinelen = sizeof(oneline) + 1;
 187                 } else {
 188                         char *eol;
 189
 190                         oneline = buffer + 1;
 191                         eol = strchr(oneline, '\n');
 192                         if (eol == NULL)
 193                                 onelinelen = strlen(oneline);
 194                         else
 195                                 onelinelen = eol - oneline;
 196                 }
 197
 198                 insert_author_oneline(list,
 199                                 author, authorlen, oneline, onelinelen);
 200         }
 201
 202 }
 203
 204 static int parse_uint(char const **arg, int comma)
 205 {
 206         unsigned long ul;
 207         int ret;
 208         char *endp;
 209
 210         ul = strtoul(*arg, &endp, 10);
 211         if (endp != *arg && *endp && *endp != comma)
 212                 return -1;
 213         ret = (int) ul;
 214         if (ret != ul)
 215                 return -1;
 216         *arg = endp;
 217         if (**arg)
 218                 (*arg)++;
 219         return ret;
 220 }
 221
 222 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 223 #define DEFAULT_WRAPLEN 76
 224 #define DEFAULT_INDENT1 6
 225 #define DEFAULT_INDENT2 9
 226
 227 static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 228 {
 229         arg += 2; /* skip -w */
 230
 231         *wrap = parse_uint(&arg, ',');
 232         if (*wrap < 0)
 233                 die(wrap_arg_usage);
 234         *in1 = parse_uint(&arg, ',');
 235         if (*in1 < 0)
 236                 die(wrap_arg_usage);
 237         *in2 = parse_uint(&arg, '\0');
 238         if (*in2 < 0)
 239                 die(wrap_arg_usage);
 240
 241         if (!*wrap)
 242                 *wrap = DEFAULT_WRAPLEN;
 243         if (!*in1)
 244                 *in1 = DEFAULT_INDENT1;
 245         if (!*in2)
 246                 *in2 = DEFAULT_INDENT2;
 247         if (*wrap &&
 248             ((*in1 && *wrap <= *in1) ||
 249              (*in2 && *wrap <= *in2)))
 250                 die(wrap_arg_usage);
 251 }
 252
 253 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 254 {
 255         struct rev_info rev;
 256         struct path_list list = { NULL, 0, 0, 1 };
 257         int i, j, sort_by_number = 0, summary = 0;
 258         int wrap_lines = 0;
 259         int wrap = DEFAULT_WRAPLEN;
 260         int in1 = DEFAULT_INDENT1;
 261         int in2 = DEFAULT_INDENT2;
 262
 263         /* since -n is a shadowed rev argument, parse our args first */
 264         while (argc > 1) {
 265                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 266                         sort_by_number = 1;
 267                 else if (!strcmp(argv[1], "-s") ||
 268                                 !strcmp(argv[1], "--summary"))
 269                         summary = 1;
 270                 else if (!prefixcmp(argv[1], "-w")) {
 271                         wrap_lines = 1;
 272                         parse_wrap_args(argv[1], &in1, &in2, &wrap);
 273                 }
 274                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 275                         usage(shortlog_usage);
 276                 else
 277                         break;
 278                 argv++;
 279                 argc--;
 280         }
 281         init_revisions(&rev, prefix);
 282         argc = setup_revisions(argc, argv, &rev, NULL);
 283         if (argc > 1)
 284                 die ("unrecognized argument: %s", argv[1]);
 285
 286         read_mailmap(&mailmap, ".mailmap", &common_repo_prefix);
 287
 288         if (rev.pending.nr == 0) {
 289                 if (isatty(0))
 290                         fprintf(stderr, "(reading log to summarize from standard input)\n");
 291                 read_from_stdin(&list);
 292         }
 293         else
 294                 get_from_rev(&rev, &list);
 295
 296         if (sort_by_number)
 297                 qsort(list.items, list.nr, sizeof(struct path_list_item),
 298                         compare_by_number);
 299
 300         for (i = 0; i < list.nr; i++) {
 301                 struct path_list *onelines = list.items[i].util;
 302
 303                 if (summary) {
 304                         printf("%s: %d\n", list.items[i].path, onelines->nr);
 305                 } else {
 306                         printf("%s (%d):\n", list.items[i].path, onelines->nr);
 307                         for (j = onelines->nr - 1; j >= 0; j--) {
 308                                 const char *msg = onelines->items[j].path;
 309
 310                                 if (wrap_lines) {
 311                                         int col = print_wrapped_text(msg, in1, in2, wrap);
 312                                         if (col != wrap)
 313                                                 putchar('\n');
 314                                 }
 315                                 else
 316                                         printf("      %s\n", msg);
 317                         }
 318                         putchar('\n');
 319                 }
 320
 321                 onelines->strdup_paths = 1;
 322                 path_list_clear(onelines, 1);
 323                 free(onelines);
 324                 list.items[i].util = NULL;
 325         }
 326
 327         list.strdup_paths = 1;
 328         path_list_clear(&list, 1);
 329         mailmap.strdup_paths = 1;
 330         path_list_clear(&mailmap, 1);
 331
 332         return 0;
 333 }