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 const char *format_subject(struct strbuf *sb, const char *msg,
  33                            const char *line_separator);
  34
  35 static void insert_one_record(struct shortlog *log,
  36                               const char *author,
  37                               const char *oneline)
  38 {
  39         const char *dot3 = log->common_repo_prefix;
  40         char *buffer, *p;
  41         struct string_list_item *item;
  42         char namebuf[1024];
  43         size_t len;
  44         const char *eol;
  45         const char *boemail, *eoemail;
  46         struct strbuf subject = STRBUF_INIT;
  47
  48         boemail = strchr(author, '<');
  49         if (!boemail)
  50                 return;
  51         eoemail = strchr(boemail, '>');
  52         if (!eoemail)
  53                 return;
  54         if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  55                 while (author < boemail && isspace(*author))
  56                         author++;
  57                 for (len = 0;
  58                      len < sizeof(namebuf) - 1 && author + len < boemail;
  59                      len++)
  60                         namebuf[len] = author[len];
  61                 while (0 < len && isspace(namebuf[len-1]))
  62                         len--;
  63                 namebuf[len] = '\0';
  64         }
  65         else
  66                 len = strlen(namebuf);
  67
  68         if (log->email) {
  69                 size_t room = sizeof(namebuf) - len - 1;
  70                 int maillen = eoemail - boemail + 1;
  71                 snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  72         }
  73
  74         item = string_list_insert(namebuf, &log->list);
  75         if (item->util == NULL)
  76                 item->util = xcalloc(1, sizeof(struct string_list));
  77
  78         /* Skip any leading whitespace, including any blank lines. */
  79         while (*oneline && isspace(*oneline))
  80                 oneline++;
  81         eol = strchr(oneline, '\n');
  82         if (!eol)
  83                 eol = oneline + strlen(oneline);
  84         if (!prefixcmp(oneline, "[PATCH")) {
  85                 char *eob = strchr(oneline, ']');
  86                 if (eob && (!eol || eob < eol))
  87                         oneline = eob + 1;
  88         }
  89         while (*oneline && isspace(*oneline) && *oneline != '\n')
  90                 oneline++;
  91         len = eol - oneline;
  92         format_subject(&subject, oneline, " ");
  93         buffer = strbuf_detach(&subject, NULL);
  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         string_list_append(buffer, item->util);
 107 }
 108
 109 static void read_from_stdin(struct shortlog *log)
 110 {
 111         char author[1024], oneline[1024];
 112
 113         while (fgets(author, sizeof(author), stdin) != NULL) {
 114                 if (!(author[0] == 'A' || author[0] == 'a') ||
 115                     prefixcmp(author + 1, "uthor: "))
 116                         continue;
 117                 while (fgets(oneline, sizeof(oneline), stdin) &&
 118                        oneline[0] != '\n')
 119                         ; /* discard headers */
 120                 while (fgets(oneline, sizeof(oneline), stdin) &&
 121                        oneline[0] == '\n')
 122                         ; /* discard blanks */
 123                 insert_one_record(log, author + 8, oneline);
 124         }
 125 }
 126
 127 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 128 {
 129         const char *author = NULL, *buffer;
 130
 131         buffer = commit->buffer;
 132         while (*buffer && *buffer != '\n') {
 133                 const char *eol = strchr(buffer, '\n');
 134
 135                 if (eol == NULL)
 136                         eol = buffer + strlen(buffer);
 137                 else
 138                         eol++;
 139
 140                 if (!prefixcmp(buffer, "author "))
 141                         author = buffer + 7;
 142                 buffer = eol;
 143         }
 144         if (!author)
 145                 die("Missing author: %s",
 146                     sha1_to_hex(commit->object.sha1));
 147         if (log->user_format) {
 148                 struct strbuf buf = STRBUF_INIT;
 149
 150                 pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &buf,
 151                         DEFAULT_ABBREV, "", "", DATE_NORMAL, 0);
 152                 insert_one_record(log, author, buf.buf);
 153                 strbuf_release(&buf);
 154                 return;
 155         }
 156         if (*buffer)
 157                 buffer++;
 158         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 159 }
 160
 161 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 162 {
 163         struct commit *commit;
 164
 165         if (prepare_revision_walk(rev))
 166                 die("revision walk setup failed");
 167         while ((commit = get_revision(rev)) != NULL)
 168                 shortlog_add_commit(log, commit);
 169 }
 170
 171 static int parse_uint(char const **arg, int comma, int defval)
 172 {
 173         unsigned long ul;
 174         int ret;
 175         char *endp;
 176
 177         ul = strtoul(*arg, &endp, 10);
 178         if (*endp && *endp != comma)
 179                 return -1;
 180         if (ul > INT_MAX)
 181                 return -1;
 182         ret = *arg == endp ? defval : (int)ul;
 183         *arg = *endp ? endp + 1 : endp;
 184         return ret;
 185 }
 186
 187 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 188 #define DEFAULT_WRAPLEN 76
 189 #define DEFAULT_INDENT1 6
 190 #define DEFAULT_INDENT2 9
 191
 192 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 193 {
 194         struct shortlog *log = opt->value;
 195
 196         log->wrap_lines = !unset;
 197         if (unset)
 198                 return 0;
 199         if (!arg) {
 200                 log->wrap = DEFAULT_WRAPLEN;
 201                 log->in1 = DEFAULT_INDENT1;
 202                 log->in2 = DEFAULT_INDENT2;
 203                 return 0;
 204         }
 205
 206         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 207         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 208         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 209         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 210                 return error(wrap_arg_usage);
 211         if (log->wrap &&
 212             ((log->in1 && log->wrap <= log->in1) ||
 213              (log->in2 && log->wrap <= log->in2)))
 214                 return error(wrap_arg_usage);
 215         return 0;
 216 }
 217
 218 void shortlog_init(struct shortlog *log)
 219 {
 220         memset(log, 0, sizeof(*log));
 221
 222         read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 223
 224         log->list.strdup_strings = 1;
 225         log->wrap = DEFAULT_WRAPLEN;
 226         log->in1 = DEFAULT_INDENT1;
 227         log->in2 = DEFAULT_INDENT2;
 228 }
 229
 230 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 231 {
 232         static struct shortlog log;
 233         static struct rev_info rev;
 234         int nongit;
 235
 236         static const struct option options[] = {
 237                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 238                             "sort output according to the number of commits per author"),
 239                 OPT_BOOLEAN('s', "summary", &log.summary,
 240                             "Suppress commit descriptions, only provides commit count"),
 241                 OPT_BOOLEAN('e', "email", &log.email,
 242                             "Show the email address of each author"),
 243                 { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
 244                         "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
 245                 OPT_END(),
 246         };
 247
 248         struct parse_opt_ctx_t ctx;
 249
 250         prefix = setup_git_directory_gently(&nongit);
 251         shortlog_init(&log);
 252         init_revisions(&rev, prefix);
 253         parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
 254                             PARSE_OPT_KEEP_ARGV0);
 255
 256         for (;;) {
 257                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 258                 case PARSE_OPT_HELP:
 259                         exit(129);
 260                 case PARSE_OPT_DONE:
 261                         goto parse_done;
 262                 }
 263                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 264         }
 265 parse_done:
 266         argc = parse_options_end(&ctx);
 267
 268         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 269                 error("unrecognized argument: %s", argv[1]);
 270                 usage_with_options(shortlog_usage, options);
 271         }
 272
 273         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 274
 275         /* assume HEAD if from a tty */
 276         if (!nongit && !rev.pending.nr && isatty(0))
 277                 add_head_to_pending(&rev);
 278         if (rev.pending.nr == 0) {
 279                 read_from_stdin(&log);
 280         }
 281         else
 282                 get_from_rev(&rev, &log);
 283
 284         shortlog_output(&log);
 285         return 0;
 286 }
 287
 288 void shortlog_output(struct shortlog *log)
 289 {
 290         int i, j;
 291         if (log->sort_by_number)
 292                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 293                         compare_by_number);
 294         for (i = 0; i < log->list.nr; i++) {
 295                 struct string_list *onelines = log->list.items[i].util;
 296
 297                 if (log->summary) {
 298                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 299                 } else {
 300                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 301                         for (j = onelines->nr - 1; j >= 0; j--) {
 302                                 const char *msg = onelines->items[j].string;
 303
 304                                 if (log->wrap_lines) {
 305                                         int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 306                                         if (col != log->wrap)
 307                                                 putchar('\n');
 308                                 }
 309                                 else
 310                                         printf("      %s\n", msg);
 311                         }
 312                         putchar('\n');
 313                 }
 314
 315                 onelines->strdup_strings = 1;
 316                 string_list_clear(onelines, 0);
 317                 free(onelines);
 318                 log->list.items[i].util = NULL;
 319         }
 320
 321         log->list.strdup_strings = 1;
 322         string_list_clear(&log->list, 1);
 323         log->mailmap.strdup_strings = 1;
 324         string_list_clear(&log->mailmap, 1);
 325 }