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         N_("git shortlog [-n] [-s] [-e] [-w] [rev-opts] [--] [<commit-id>... ]"),
  14         "",
  15         N_("[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         const char *mailbuf, *namebuf;
  40         size_t namelen, maillen;
  41         const char *eol;
  42         struct strbuf subject = STRBUF_INIT;
  43         struct strbuf namemailbuf = STRBUF_INIT;
  44         struct ident_split ident;
  45
  46         if (split_ident_line(&ident, author, strlen(author)))
  47                 return;
  48
  49         namebuf = ident.name_begin;
  50         mailbuf = ident.mail_begin;
  51         namelen = ident.name_end - ident.name_begin;
  52         maillen = ident.mail_end - ident.mail_begin;
  53
  54         map_user(&log->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
  55         strbuf_add(&namemailbuf, namebuf, namelen);
  56
  57         if (log->email)
  58                 strbuf_addf(&namemailbuf, " <%.*s>", (int)maillen, mailbuf);
  59
  60         item = string_list_insert(&log->list, namemailbuf.buf);
  61         if (item->util == NULL)
  62                 item->util = xcalloc(1, sizeof(struct string_list));
  63
  64         /* Skip any leading whitespace, including any blank lines. */
  65         while (*oneline && isspace(*oneline))
  66                 oneline++;
  67         eol = strchr(oneline, '\n');
  68         if (!eol)
  69                 eol = oneline + strlen(oneline);
  70         if (!prefixcmp(oneline, "[PATCH")) {
  71                 char *eob = strchr(oneline, ']');
  72                 if (eob && (!eol || eob < eol))
  73                         oneline = eob + 1;
  74         }
  75         while (*oneline && isspace(*oneline) && *oneline != '\n')
  76                 oneline++;
  77         format_subject(&subject, oneline, " ");
  78         buffer = strbuf_detach(&subject, NULL);
  79
  80         if (dot3) {
  81                 int dot3len = strlen(dot3);
  82                 if (dot3len > 5) {
  83                         while ((p = strstr(buffer, dot3)) != NULL) {
  84                                 int taillen = strlen(p) - dot3len;
  85                                 memcpy(p, "/.../", 5);
  86                                 memmove(p + 5, p + dot3len, taillen + 1);
  87                         }
  88                 }
  89         }
  90
  91         string_list_append(item->util, buffer);
  92 }
  93
  94 static void read_from_stdin(struct shortlog *log)
  95 {
  96         char author[1024], oneline[1024];
  97
  98         while (fgets(author, sizeof(author), stdin) != NULL) {
  99                 if (!(author[0] == 'A' || author[0] == 'a') ||
 100                     prefixcmp(author + 1, "uthor: "))
 101                         continue;
 102                 while (fgets(oneline, sizeof(oneline), stdin) &&
 103                        oneline[0] != '\n')
 104                         ; /* discard headers */
 105                 while (fgets(oneline, sizeof(oneline), stdin) &&
 106                        oneline[0] == '\n')
 107                         ; /* discard blanks */
 108                 insert_one_record(log, author + 8, oneline);
 109         }
 110 }
 111
 112 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 113 {
 114         const char *author = NULL, *buffer;
 115         struct strbuf buf = STRBUF_INIT;
 116         struct strbuf ufbuf = STRBUF_INIT;
 117
 118         pp_commit_easy(CMIT_FMT_RAW, commit, &buf);
 119         buffer = buf.buf;
 120         while (*buffer && *buffer != '\n') {
 121                 const char *eol = strchr(buffer, '\n');
 122
 123                 if (eol == NULL)
 124                         eol = buffer + strlen(buffer);
 125                 else
 126                         eol++;
 127
 128                 if (!prefixcmp(buffer, "author "))
 129                         author = buffer + 7;
 130                 buffer = eol;
 131         }
 132         if (!author)
 133                 die(_("Missing author: %s"),
 134                     sha1_to_hex(commit->object.sha1));
 135         if (log->user_format) {
 136                 struct pretty_print_context ctx = {0};
 137                 ctx.fmt = CMIT_FMT_USERFORMAT;
 138                 ctx.abbrev = log->abbrev;
 139                 ctx.subject = "";
 140                 ctx.after_subject = "";
 141                 ctx.date_mode = DATE_NORMAL;
 142                 pretty_print_commit(&ctx, commit, &ufbuf);
 143                 buffer = ufbuf.buf;
 144         } else if (*buffer) {
 145                 buffer++;
 146         }
 147         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 148         strbuf_release(&ufbuf);
 149         strbuf_release(&buf);
 150 }
 151
 152 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 153 {
 154         struct commit *commit;
 155
 156         if (prepare_revision_walk(rev))
 157                 die(_("revision walk setup failed"));
 158         while ((commit = get_revision(rev)) != NULL)
 159                 shortlog_add_commit(log, commit);
 160 }
 161
 162 static int parse_uint(char const **arg, int comma, int defval)
 163 {
 164         unsigned long ul;
 165         int ret;
 166         char *endp;
 167
 168         ul = strtoul(*arg, &endp, 10);
 169         if (*endp && *endp != comma)
 170                 return -1;
 171         if (ul > INT_MAX)
 172                 return -1;
 173         ret = *arg == endp ? defval : (int)ul;
 174         *arg = *endp ? endp + 1 : endp;
 175         return ret;
 176 }
 177
 178 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 179 #define DEFAULT_WRAPLEN 76
 180 #define DEFAULT_INDENT1 6
 181 #define DEFAULT_INDENT2 9
 182
 183 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 184 {
 185         struct shortlog *log = opt->value;
 186
 187         log->wrap_lines = !unset;
 188         if (unset)
 189                 return 0;
 190         if (!arg) {
 191                 log->wrap = DEFAULT_WRAPLEN;
 192                 log->in1 = DEFAULT_INDENT1;
 193                 log->in2 = DEFAULT_INDENT2;
 194                 return 0;
 195         }
 196
 197         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 198         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 199         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 200         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 201                 return error(wrap_arg_usage);
 202         if (log->wrap &&
 203             ((log->in1 && log->wrap <= log->in1) ||
 204              (log->in2 && log->wrap <= log->in2)))
 205                 return error(wrap_arg_usage);
 206         return 0;
 207 }
 208
 209 void shortlog_init(struct shortlog *log)
 210 {
 211         memset(log, 0, sizeof(*log));
 212
 213         read_mailmap(&log->mailmap, &log->common_repo_prefix);
 214
 215         log->list.strdup_strings = 1;
 216         log->wrap = DEFAULT_WRAPLEN;
 217         log->in1 = DEFAULT_INDENT1;
 218         log->in2 = DEFAULT_INDENT2;
 219 }
 220
 221 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 222 {
 223         static struct shortlog log;
 224         static struct rev_info rev;
 225         int nongit = !startup_info->have_repository;
 226
 227         static const struct option options[] = {
 228                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 229                             N_("sort output according to the number of commits per author")),
 230                 OPT_BOOLEAN('s', "summary", &log.summary,
 231                             N_("Suppress commit descriptions, only provides commit count")),
 232                 OPT_BOOLEAN('e', "email", &log.email,
 233                             N_("Show the email address of each author")),
 234                 { OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
 235                         N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
 236                 OPT_END(),
 237         };
 238
 239         struct parse_opt_ctx_t ctx;
 240
 241         git_config(git_default_config, NULL);
 242         shortlog_init(&log);
 243         init_revisions(&rev, prefix);
 244         parse_options_start(&ctx, argc, argv, prefix, options,
 245                             PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
 246
 247         for (;;) {
 248                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 249                 case PARSE_OPT_HELP:
 250                         exit(129);
 251                 case PARSE_OPT_DONE:
 252                         goto parse_done;
 253                 }
 254                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 255         }
 256 parse_done:
 257         argc = parse_options_end(&ctx);
 258
 259         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 260                 error(_("unrecognized argument: %s"), argv[1]);
 261                 usage_with_options(shortlog_usage, options);
 262         }
 263
 264         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 265         log.abbrev = rev.abbrev;
 266
 267         /* assume HEAD if from a tty */
 268         if (!nongit && !rev.pending.nr && isatty(0))
 269                 add_head_to_pending(&rev);
 270         if (rev.pending.nr == 0) {
 271                 if (isatty(0))
 272                         fprintf(stderr, _("(reading log message from standard input)\n"));
 273                 read_from_stdin(&log);
 274         }
 275         else
 276                 get_from_rev(&rev, &log);
 277
 278         shortlog_output(&log);
 279         return 0;
 280 }
 281
 282 static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
 283                                      const struct shortlog *log)
 284 {
 285         strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
 286         strbuf_addch(sb, '\n');
 287 }
 288
 289 void shortlog_output(struct shortlog *log)
 290 {
 291         int i, j;
 292         struct strbuf sb = STRBUF_INIT;
 293
 294         if (log->sort_by_number)
 295                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 296                         compare_by_number);
 297         for (i = 0; i < log->list.nr; i++) {
 298                 struct string_list *onelines = log->list.items[i].util;
 299
 300                 if (log->summary) {
 301                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 302                 } else {
 303                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 304                         for (j = onelines->nr - 1; j >= 0; j--) {
 305                                 const char *msg = onelines->items[j].string;
 306
 307                                 if (log->wrap_lines) {
 308                                         strbuf_reset(&sb);
 309                                         add_wrapped_shortlog_msg(&sb, msg, log);
 310                                         fwrite(sb.buf, sb.len, 1, stdout);
 311                                 }
 312                                 else
 313                                         printf("      %s\n", msg);
 314                         }
 315                         putchar('\n');
 316                 }
 317
 318                 onelines->strdup_strings = 1;
 319                 string_list_clear(onelines, 0);
 320                 free(onelines);
 321                 log->list.items[i].util = NULL;
 322         }
 323
 324         strbuf_release(&sb);
 325         log->list.strdup_strings = 1;
 326         string_list_clear(&log->list, 1);
 327         clear_mailmap(&log->mailmap);
 328 }