builtin-shortlog.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "commit.h"
   4 #include "diff.h"
   5 #include "string-list.h"
   6 #include "revision.h"
   7 #include "utf8.h"
   8 #include "mailmap.h"
   9 #include "shortlog.h"
  10 #include "parse-options.h"
  11
  12 static char const * const shortlog_usage[] = {
  13         "git shortlog [-n] [-s] [-e] [-w] [rev-opts] [--] [<commit-id>... ]",
  14         "",
  15         "[rev-opts] are documented in git-rev-list(1)",
  16         NULL
  17 };
  18
  19 static int compare_by_number(const void *a1, const void *a2)
  20 {
  21         const struct string_list_item *i1 = a1, *i2 = a2;
  22         const struct string_list *l1 = i1->util, *l2 = i2->util;
  23
  24         if (l1->nr < l2->nr)
  25                 return 1;
  26         else if (l1->nr == l2->nr)
  27                 return 0;
  28         else
  29                 return -1;
  30 }
  31
  32 static void insert_one_record(struct shortlog *log,
  33                               const char *author,
  34                               const char *oneline)
  35 {
  36         const char *dot3 = log->common_repo_prefix;
  37         char *buffer, *p;
  38         struct string_list_item *item;
  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(&log->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 (log->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         item = string_list_insert(namebuf, &log->list);
  71         if (item->util == NULL)
  72                 item->util = xcalloc(1, sizeof(struct string_list));
  73
  74         /* Skip any leading whitespace, including any blank lines. */
  75         while (*oneline && isspace(*oneline))
  76                 oneline++;
  77         eol = strchr(oneline, '\n');
  78         if (!eol)
  79                 eol = oneline + strlen(oneline);
  80         if (!prefixcmp(oneline, "[PATCH")) {
  81                 char *eob = strchr(oneline, ']');
  82                 if (eob && (!eol || eob < eol))
  83                         oneline = eob + 1;
  84         }
  85         while (*oneline && isspace(*oneline) && *oneline != '\n')
  86                 oneline++;
  87         len = eol - oneline;
  88         while (len && isspace(oneline[len-1]))
  89                 len--;
  90         buffer = xmemdupz(oneline, len);
  91
  92         if (dot3) {
  93                 int dot3len = strlen(dot3);
  94                 if (dot3len > 5) {
  95                         while ((p = strstr(buffer, dot3)) != NULL) {
  96                                 int taillen = strlen(p) - dot3len;
  97                                 memcpy(p, "/.../", 5);
  98                                 memmove(p + 5, p + dot3len, taillen + 1);
  99                         }
 100                 }
 101         }
 102
 103         string_list_append(buffer, item->util);
 104 }
 105
 106 static void read_from_stdin(struct shortlog *log)
 107 {
 108         char author[1024], oneline[1024];
 109
 110         while (fgets(author, sizeof(author), stdin) != NULL) {
 111                 if (!(author[0] == 'A' || author[0] == 'a') ||
 112                     prefixcmp(author + 1, "uthor: "))
 113                         continue;
 114                 while (fgets(oneline, sizeof(oneline), stdin) &&
 115                        oneline[0] != '\n')
 116                         ; /* discard headers */
 117                 while (fgets(oneline, sizeof(oneline), stdin) &&
 118                        oneline[0] == '\n')
 119                         ; /* discard blanks */
 120                 insert_one_record(log, author + 8, oneline);
 121         }
 122 }
 123
 124 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 125 {
 126         const char *author = NULL, *buffer;
 127
 128         buffer = commit->buffer;
 129         while (*buffer && *buffer != '\n') {
 130                 const char *eol = strchr(buffer, '\n');
 131
 132                 if (eol == NULL)
 133                         eol = buffer + strlen(buffer);
 134                 else
 135                         eol++;
 136
 137                 if (!prefixcmp(buffer, "author "))
 138                         author = buffer + 7;
 139                 buffer = eol;
 140         }
 141         if (!author)
 142                 die("Missing author: %s",
 143                     sha1_to_hex(commit->object.sha1));
 144         if (log->user_format) {
 145                 struct strbuf buf = STRBUF_INIT;
 146
 147                 pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &buf,
 148                         DEFAULT_ABBREV, "", "", DATE_NORMAL, 0);
 149                 insert_one_record(log, author, buf.buf);
 150                 strbuf_release(&buf);
 151                 return;
 152         }
 153         if (*buffer)
 154                 buffer++;
 155         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 156 }
 157
 158 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 159 {
 160         struct commit *commit;
 161
 162         if (prepare_revision_walk(rev))
 163                 die("revision walk setup failed");
 164         while ((commit = get_revision(rev)) != NULL)
 165                 shortlog_add_commit(log, commit);
 166 }
 167
 168 static int parse_uint(char const **arg, int comma, int defval)
 169 {
 170         unsigned long ul;
 171         int ret;
 172         char *endp;
 173
 174         ul = strtoul(*arg, &endp, 10);
 175         if (*endp && *endp != comma)
 176                 return -1;
 177         if (ul > INT_MAX)
 178                 return -1;
 179         ret = *arg == endp ? defval : (int)ul;
 180         *arg = *endp ? endp + 1 : endp;
 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 int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 190 {
 191         struct shortlog *log = opt->value;
 192
 193         log->wrap_lines = !unset;
 194         if (unset)
 195                 return 0;
 196         if (!arg) {
 197                 log->wrap = DEFAULT_WRAPLEN;
 198                 log->in1 = DEFAULT_INDENT1;
 199                 log->in2 = DEFAULT_INDENT2;
 200                 return 0;
 201         }
 202
 203         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 204         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 205         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 206         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 207                 return error(wrap_arg_usage);
 208         if (log->wrap &&
 209             ((log->in1 && log->wrap <= log->in1) ||
 210              (log->in2 && log->wrap <= log->in2)))
 211                 return error(wrap_arg_usage);
 212         return 0;
 213 }
 214
 215 void shortlog_init(struct shortlog *log)
 216 {
 217         memset(log, 0, sizeof(*log));
 218
 219         read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 220
 221         log->list.strdup_strings = 1;
 222         log->wrap = DEFAULT_WRAPLEN;
 223         log->in1 = DEFAULT_INDENT1;
 224         log->in2 = DEFAULT_INDENT2;
 225 }
 226
 227 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 228 {
 229         static struct shortlog log;
 230         static struct rev_info rev;
 231         int nongit;
 232
 233         static const struct option options[] = {
 234                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 235                             "sort output according to the number of commits per author"),
 236                 OPT_BOOLEAN('s', "summary", &log.summary,
 237                             "Suppress commit descriptions, only provides commit count"),
 238                 OPT_BOOLEAN('e', "email", &log.email,
 239                             "Show the email address of each author"),
 240                 { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
 241                         "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
 242                 OPT_END(),
 243         };
 244
 245         struct parse_opt_ctx_t ctx;
 246
 247         prefix = setup_git_directory_gently(&nongit);
 248         shortlog_init(&log);
 249         init_revisions(&rev, prefix);
 250         parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
 251                             PARSE_OPT_KEEP_ARGV0);
 252
 253         for (;;) {
 254                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 255                 case PARSE_OPT_HELP:
 256                         exit(129);
 257                 case PARSE_OPT_DONE:
 258                         goto parse_done;
 259                 }
 260                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 261         }
 262 parse_done:
 263         argc = parse_options_end(&ctx);
 264
 265         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 266                 error("unrecognized argument: %s", argv[1]);
 267                 usage_with_options(shortlog_usage, options);
 268         }
 269
 270         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 271
 272         /* assume HEAD if from a tty */
 273         if (!nongit && !rev.pending.nr && isatty(0))
 274                 add_head_to_pending(&rev);
 275         if (rev.pending.nr == 0) {
 276                 read_from_stdin(&log);
 277         }
 278         else
 279                 get_from_rev(&rev, &log);
 280
 281         shortlog_output(&log);
 282         return 0;
 283 }
 284
 285 void shortlog_output(struct shortlog *log)
 286 {
 287         int i, j;
 288         if (log->sort_by_number)
 289                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 290                         compare_by_number);
 291         for (i = 0; i < log->list.nr; i++) {
 292                 struct string_list *onelines = log->list.items[i].util;
 293
 294                 if (log->summary) {
 295                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 296                 } else {
 297                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 298                         for (j = onelines->nr - 1; j >= 0; j--) {
 299                                 const char *msg = onelines->items[j].string;
 300
 301                                 if (log->wrap_lines) {
 302                                         int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 303                                         if (col != log->wrap)
 304                                                 putchar('\n');
 305                                 }
 306                                 else
 307                                         printf("      %s\n", msg);
 308                         }
 309                         putchar('\n');
 310                 }
 311
 312                 onelines->strdup_strings = 1;
 313                 string_list_clear(onelines, 0);
 314                 free(onelines);
 315                 log->list.items[i].util = NULL;
 316         }
 317
 318         log->list.strdup_strings = 1;
 319         string_list_clear(&log->list, 1);
 320         log->mailmap.strdup_strings = 1;
 321         string_list_clear(&log->mailmap, 1);
 322 }