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 #include "shortlog.h"
  10
  11 static const char shortlog_usage[] =
  12 "git-shortlog [-n] [-s] [-e] [-w] [<commit-id>... ]";
  13
  14 static int compare_by_number(const void *a1, const void *a2)
  15 {
  16         const struct path_list_item *i1 = a1, *i2 = a2;
  17         const struct path_list *l1 = i1->util, *l2 = i2->util;
  18
  19         if (l1->nr < l2->nr)
  20                 return 1;
  21         else if (l1->nr == l2->nr)
  22                 return 0;
  23         else
  24                 return -1;
  25 }
  26
  27 static void insert_one_record(struct shortlog *log,
  28                               const char *author,
  29                               const char *oneline)
  30 {
  31         const char *dot3 = log->common_repo_prefix;
  32         char *buffer, *p;
  33         struct path_list_item *item;
  34         struct path_list *onelines;
  35         char namebuf[1024];
  36         size_t len;
  37         const char *eol;
  38         const char *boemail, *eoemail;
  39
  40         boemail = strchr(author, '<');
  41         if (!boemail)
  42                 return;
  43         eoemail = strchr(boemail, '>');
  44         if (!eoemail)
  45                 return;
  46         if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  47                 while (author < boemail && isspace(*author))
  48                         author++;
  49                 for (len = 0;
  50                      len < sizeof(namebuf) - 1 && author + len < boemail;
  51                      len++)
  52                         namebuf[len] = author[len];
  53                 while (0 < len && isspace(namebuf[len-1]))
  54                         len--;
  55                 namebuf[len] = '\0';
  56         }
  57         else
  58                 len = strlen(namebuf);
  59
  60         if (log->email) {
  61                 size_t room = sizeof(namebuf) - len - 1;
  62                 int maillen = eoemail - boemail + 1;
  63                 snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  64         }
  65
  66         buffer = xstrdup(namebuf);
  67         item = path_list_insert(buffer, &log->list);
  68         if (item->util == NULL)
  69                 item->util = xcalloc(1, sizeof(struct path_list));
  70         else
  71                 free(buffer);
  72
  73         /* Skip any leading whitespace, including any blank lines. */
  74         while (*oneline && isspace(*oneline))
  75                 oneline++;
  76         eol = strchr(oneline, '\n');
  77         if (!eol)
  78                 eol = oneline + strlen(oneline);
  79         if (!prefixcmp(oneline, "[PATCH")) {
  80                 char *eob = strchr(oneline, ']');
  81                 if (eob && (!eol || eob < eol))
  82                         oneline = eob + 1;
  83         }
  84         while (*oneline && isspace(*oneline) && *oneline != '\n')
  85                 oneline++;
  86         len = eol - oneline;
  87         while (len && isspace(oneline[len-1]))
  88                 len--;
  89         buffer = xmemdupz(oneline, len);
  90
  91         if (dot3) {
  92                 int dot3len = strlen(dot3);
  93                 if (dot3len > 5) {
  94                         while ((p = strstr(buffer, dot3)) != NULL) {
  95                                 int taillen = strlen(p) - dot3len;
  96                                 memcpy(p, "/.../", 5);
  97                                 memmove(p + 5, p + dot3len, taillen + 1);
  98                         }
  99                 }
 100         }
 101
 102         onelines = item->util;
 103         if (onelines->nr >= onelines->alloc) {
 104                 onelines->alloc = alloc_nr(onelines->nr);
 105                 onelines->items = xrealloc(onelines->items,
 106                                 onelines->alloc
 107                                 * sizeof(struct path_list_item));
 108         }
 109
 110         onelines->items[onelines->nr].util = NULL;
 111         onelines->items[onelines->nr++].path = buffer;
 112 }
 113
 114 static void read_from_stdin(struct shortlog *log)
 115 {
 116         char author[1024], oneline[1024];
 117
 118         while (fgets(author, sizeof(author), stdin) != NULL) {
 119                 if (!(author[0] == 'A' || author[0] == 'a') ||
 120                     prefixcmp(author + 1, "uthor: "))
 121                         continue;
 122                 while (fgets(oneline, sizeof(oneline), stdin) &&
 123                        oneline[0] != '\n')
 124                         ; /* discard headers */
 125                 while (fgets(oneline, sizeof(oneline), stdin) &&
 126                        oneline[0] == '\n')
 127                         ; /* discard blanks */
 128                 insert_one_record(log, author + 8, oneline);
 129         }
 130 }
 131
 132 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 133 {
 134         const char *author = NULL, *buffer;
 135
 136         buffer = commit->buffer;
 137         while (*buffer && *buffer != '\n') {
 138                 const char *eol = strchr(buffer, '\n');
 139
 140                 if (eol == NULL)
 141                         eol = buffer + strlen(buffer);
 142                 else
 143                         eol++;
 144
 145                 if (!prefixcmp(buffer, "author "))
 146                         author = buffer + 7;
 147                 buffer = eol;
 148         }
 149         if (!author)
 150                 die("Missing author: %s",
 151                     sha1_to_hex(commit->object.sha1));
 152         if (*buffer)
 153                 buffer++;
 154         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 155 }
 156
 157 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 158 {
 159         struct commit *commit;
 160
 161         if (prepare_revision_walk(rev))
 162                 die("revision walk setup failed");
 163         while ((commit = get_revision(rev)) != NULL)
 164                 shortlog_add_commit(log, commit);
 165 }
 166
 167 static int parse_uint(char const **arg, int comma)
 168 {
 169         unsigned long ul;
 170         int ret;
 171         char *endp;
 172
 173         ul = strtoul(*arg, &endp, 10);
 174         if (endp != *arg && *endp && *endp != comma)
 175                 return -1;
 176         ret = (int) ul;
 177         if (ret != ul)
 178                 return -1;
 179         *arg = endp;
 180         if (**arg)
 181                 (*arg)++;
 182         return ret;
 183 }
 184
 185 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 186 #define DEFAULT_WRAPLEN 76
 187 #define DEFAULT_INDENT1 6
 188 #define DEFAULT_INDENT2 9
 189
 190 static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 191 {
 192         arg += 2; /* skip -w */
 193
 194         *wrap = parse_uint(&arg, ',');
 195         if (*wrap < 0)
 196                 die(wrap_arg_usage);
 197         *in1 = parse_uint(&arg, ',');
 198         if (*in1 < 0)
 199                 die(wrap_arg_usage);
 200         *in2 = parse_uint(&arg, '\0');
 201         if (*in2 < 0)
 202                 die(wrap_arg_usage);
 203
 204         if (!*wrap)
 205                 *wrap = DEFAULT_WRAPLEN;
 206         if (!*in1)
 207                 *in1 = DEFAULT_INDENT1;
 208         if (!*in2)
 209                 *in2 = DEFAULT_INDENT2;
 210         if (*wrap &&
 211             ((*in1 && *wrap <= *in1) ||
 212              (*in2 && *wrap <= *in2)))
 213                 die(wrap_arg_usage);
 214 }
 215
 216 void shortlog_init(struct shortlog *log)
 217 {
 218         memset(log, 0, sizeof(*log));
 219
 220         read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 221
 222         log->list.strdup_paths = 1;
 223         log->wrap = DEFAULT_WRAPLEN;
 224         log->in1 = DEFAULT_INDENT1;
 225         log->in2 = DEFAULT_INDENT2;
 226 }
 227
 228 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 229 {
 230         struct shortlog log;
 231         struct rev_info rev;
 232         int nongit;
 233
 234         prefix = setup_git_directory_gently(&nongit);
 235         shortlog_init(&log);
 236
 237         /* since -n is a shadowed rev argument, parse our args first */
 238         while (argc > 1) {
 239                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 240                         log.sort_by_number = 1;
 241                 else if (!strcmp(argv[1], "-s") ||
 242                                 !strcmp(argv[1], "--summary"))
 243                         log.summary = 1;
 244                 else if (!strcmp(argv[1], "-e") ||
 245                          !strcmp(argv[1], "--email"))
 246                         log.email = 1;
 247                 else if (!prefixcmp(argv[1], "-w")) {
 248                         log.wrap_lines = 1;
 249                         parse_wrap_args(argv[1], &log.in1, &log.in2, &log.wrap);
 250                 }
 251                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 252                         usage(shortlog_usage);
 253                 else
 254                         break;
 255                 argv++;
 256                 argc--;
 257         }
 258         init_revisions(&rev, prefix);
 259         argc = setup_revisions(argc, argv, &rev, NULL);
 260         if (argc > 1)
 261                 die ("unrecognized argument: %s", argv[1]);
 262
 263         /* assume HEAD if from a tty */
 264         if (!nongit && !rev.pending.nr && isatty(0))
 265                 add_head_to_pending(&rev);
 266         if (rev.pending.nr == 0) {
 267                 read_from_stdin(&log);
 268         }
 269         else
 270                 get_from_rev(&rev, &log);
 271
 272         shortlog_output(&log);
 273         return 0;
 274 }
 275
 276 void shortlog_output(struct shortlog *log)
 277 {
 278         int i, j;
 279         if (log->sort_by_number)
 280                 qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
 281                         compare_by_number);
 282         for (i = 0; i < log->list.nr; i++) {
 283                 struct path_list *onelines = log->list.items[i].util;
 284
 285                 if (log->summary) {
 286                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
 287                 } else {
 288                         printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
 289                         for (j = onelines->nr - 1; j >= 0; j--) {
 290                                 const char *msg = onelines->items[j].path;
 291
 292                                 if (log->wrap_lines) {
 293                                         int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 294                                         if (col != log->wrap)
 295                                                 putchar('\n');
 296                                 }
 297                                 else
 298                                         printf("      %s\n", msg);
 299                         }
 300                         putchar('\n');
 301                 }
 302
 303                 onelines->strdup_paths = 1;
 304                 path_list_clear(onelines, 1);
 305                 free(onelines);
 306                 log->list.items[i].util = NULL;
 307         }
 308
 309         log->list.strdup_paths = 1;
 310         path_list_clear(&log->list, 1);
 311         log->mailmap.strdup_paths = 1;
 312         path_list_clear(&log->mailmap, 1);
 313 }