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         struct string_list *onelines;
  43         char namebuf[1024];
  44         size_t len;
  45         const char *eol;
  46         const char *boemail, *eoemail;
  47         struct strbuf subject = STRBUF_INIT;
  48
  49         boemail = strchr(author, '<');
  50         if (!boemail)
  51                 return;
  52         eoemail = strchr(boemail, '>');
  53         if (!eoemail)
  54                 return;
  55         if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  56                 while (author < boemail && isspace(*author))
  57                         author++;
  58                 for (len = 0;
  59                      len < sizeof(namebuf) - 1 && author + len < boemail;
  60                      len++)
  61                         namebuf[len] = author[len];
  62                 while (0 < len && isspace(namebuf[len-1]))
  63                         len--;
  64                 namebuf[len] = '\0';
  65         }
  66         else
  67                 len = strlen(namebuf);
  68
  69         if (log->email) {
  70                 size_t room = sizeof(namebuf) - len - 1;
  71                 int maillen = eoemail - boemail + 1;
  72                 snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  73         }
  74
  75         buffer = xstrdup(namebuf);
  76         item = string_list_insert(buffer, &log->list);
  77         if (item->util == NULL)
  78                 item->util = xcalloc(1, sizeof(struct string_list));
  79         else
  80                 free(buffer);
  81
  82         /* Skip any leading whitespace, including any blank lines. */
  83         while (*oneline && isspace(*oneline))
  84                 oneline++;
  85         eol = strchr(oneline, '\n');
  86         if (!eol)
  87                 eol = oneline + strlen(oneline);
  88         if (!prefixcmp(oneline, "[PATCH")) {
  89                 char *eob = strchr(oneline, ']');
  90                 if (eob && (!eol || eob < eol))
  91                         oneline = eob + 1;
  92         }
  93         while (*oneline && isspace(*oneline) && *oneline != '\n')
  94                 oneline++;
  95         len = eol - oneline;
  96         format_subject(&subject, oneline, " ");
  97         buffer = strbuf_detach(&subject, NULL);
  98
  99         if (dot3) {
 100                 int dot3len = strlen(dot3);
 101                 if (dot3len > 5) {
 102                         while ((p = strstr(buffer, dot3)) != NULL) {
 103                                 int taillen = strlen(p) - dot3len;
 104                                 memcpy(p, "/.../", 5);
 105                                 memmove(p + 5, p + dot3len, taillen + 1);
 106                         }
 107                 }
 108         }
 109
 110         onelines = item->util;
 111         if (onelines->nr >= onelines->alloc) {
 112                 onelines->alloc = alloc_nr(onelines->nr);
 113                 onelines->items = xrealloc(onelines->items,
 114                                 onelines->alloc
 115                                 * sizeof(struct string_list_item));
 116         }
 117
 118         onelines->items[onelines->nr].util = NULL;
 119         onelines->items[onelines->nr++].string = buffer;
 120 }
 121
 122 static void read_from_stdin(struct shortlog *log)
 123 {
 124         char author[1024], oneline[1024];
 125
 126         while (fgets(author, sizeof(author), stdin) != NULL) {
 127                 if (!(author[0] == 'A' || author[0] == 'a') ||
 128                     prefixcmp(author + 1, "uthor: "))
 129                         continue;
 130                 while (fgets(oneline, sizeof(oneline), stdin) &&
 131                        oneline[0] != '\n')
 132                         ; /* discard headers */
 133                 while (fgets(oneline, sizeof(oneline), stdin) &&
 134                        oneline[0] == '\n')
 135                         ; /* discard blanks */
 136                 insert_one_record(log, author + 8, oneline);
 137         }
 138 }
 139
 140 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 141 {
 142         const char *author = NULL, *buffer;
 143
 144         buffer = commit->buffer;
 145         while (*buffer && *buffer != '\n') {
 146                 const char *eol = strchr(buffer, '\n');
 147
 148                 if (eol == NULL)
 149                         eol = buffer + strlen(buffer);
 150                 else
 151                         eol++;
 152
 153                 if (!prefixcmp(buffer, "author "))
 154                         author = buffer + 7;
 155                 buffer = eol;
 156         }
 157         if (!author)
 158                 die("Missing author: %s",
 159                     sha1_to_hex(commit->object.sha1));
 160         if (log->user_format) {
 161                 struct strbuf buf = STRBUF_INIT;
 162
 163                 pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &buf,
 164                         DEFAULT_ABBREV, "", "", DATE_NORMAL, 0);
 165                 insert_one_record(log, author, buf.buf);
 166                 strbuf_release(&buf);
 167                 return;
 168         }
 169         if (*buffer)
 170                 buffer++;
 171         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 172 }
 173
 174 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 175 {
 176         struct commit *commit;
 177
 178         if (prepare_revision_walk(rev))
 179                 die("revision walk setup failed");
 180         while ((commit = get_revision(rev)) != NULL)
 181                 shortlog_add_commit(log, commit);
 182 }
 183
 184 static int parse_uint(char const **arg, int comma, int defval)
 185 {
 186         unsigned long ul;
 187         int ret;
 188         char *endp;
 189
 190         ul = strtoul(*arg, &endp, 10);
 191         if (*endp && *endp != comma)
 192                 return -1;
 193         if (ul > INT_MAX)
 194                 return -1;
 195         ret = *arg == endp ? defval : (int)ul;
 196         *arg = *endp ? endp + 1 : endp;
 197         return ret;
 198 }
 199
 200 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 201 #define DEFAULT_WRAPLEN 76
 202 #define DEFAULT_INDENT1 6
 203 #define DEFAULT_INDENT2 9
 204
 205 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 206 {
 207         struct shortlog *log = opt->value;
 208
 209         log->wrap_lines = !unset;
 210         if (unset)
 211                 return 0;
 212         if (!arg) {
 213                 log->wrap = DEFAULT_WRAPLEN;
 214                 log->in1 = DEFAULT_INDENT1;
 215                 log->in2 = DEFAULT_INDENT2;
 216                 return 0;
 217         }
 218
 219         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 220         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 221         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 222         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 223                 return error(wrap_arg_usage);
 224         if (log->wrap &&
 225             ((log->in1 && log->wrap <= log->in1) ||
 226              (log->in2 && log->wrap <= log->in2)))
 227                 return error(wrap_arg_usage);
 228         return 0;
 229 }
 230
 231 void shortlog_init(struct shortlog *log)
 232 {
 233         memset(log, 0, sizeof(*log));
 234
 235         read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 236
 237         log->list.strdup_strings = 1;
 238         log->wrap = DEFAULT_WRAPLEN;
 239         log->in1 = DEFAULT_INDENT1;
 240         log->in2 = DEFAULT_INDENT2;
 241 }
 242
 243 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 244 {
 245         static struct shortlog log;
 246         static struct rev_info rev;
 247         int nongit;
 248
 249         static const struct option options[] = {
 250                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 251                             "sort output according to the number of commits per author"),
 252                 OPT_BOOLEAN('s', "summary", &log.summary,
 253                             "Suppress commit descriptions, only provides commit count"),
 254                 OPT_BOOLEAN('e', "email", &log.email,
 255                             "Show the email address of each author"),
 256                 { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
 257                         "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
 258                 OPT_END(),
 259         };
 260
 261         struct parse_opt_ctx_t ctx;
 262
 263         prefix = setup_git_directory_gently(&nongit);
 264         shortlog_init(&log);
 265         init_revisions(&rev, prefix);
 266         parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
 267                             PARSE_OPT_KEEP_ARGV0);
 268
 269         for (;;) {
 270                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 271                 case PARSE_OPT_HELP:
 272                         exit(129);
 273                 case PARSE_OPT_DONE:
 274                         goto parse_done;
 275                 }
 276                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 277         }
 278 parse_done:
 279         argc = parse_options_end(&ctx);
 280
 281         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 282                 error("unrecognized argument: %s", argv[1]);
 283                 usage_with_options(shortlog_usage, options);
 284         }
 285
 286         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 287
 288         /* assume HEAD if from a tty */
 289         if (!nongit && !rev.pending.nr && isatty(0))
 290                 add_head_to_pending(&rev);
 291         if (rev.pending.nr == 0) {
 292                 read_from_stdin(&log);
 293         }
 294         else
 295                 get_from_rev(&rev, &log);
 296
 297         shortlog_output(&log);
 298         return 0;
 299 }
 300
 301 void shortlog_output(struct shortlog *log)
 302 {
 303         int i, j;
 304         if (log->sort_by_number)
 305                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 306                         compare_by_number);
 307         for (i = 0; i < log->list.nr; i++) {
 308                 struct string_list *onelines = log->list.items[i].util;
 309
 310                 if (log->summary) {
 311                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 312                 } else {
 313                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 314                         for (j = onelines->nr - 1; j >= 0; j--) {
 315                                 const char *msg = onelines->items[j].string;
 316
 317                                 if (log->wrap_lines) {
 318                                         int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 319                                         if (col != log->wrap)
 320                                                 putchar('\n');
 321                                 }
 322                                 else
 323                                         printf("      %s\n", msg);
 324                         }
 325                         putchar('\n');
 326                 }
 327
 328                 onelines->strdup_strings = 1;
 329                 string_list_clear(onelines, 1);
 330                 free(onelines);
 331                 log->list.items[i].util = NULL;
 332         }
 333
 334         log->list.strdup_strings = 1;
 335         string_list_clear(&log->list, 1);
 336         log->mailmap.strdup_strings = 1;
 337         string_list_clear(&log->mailmap, 1);
 338 }