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 [<options>] [<revision range>] [[--] [<path>...]]"),
  14         NULL
  15 };
  16
  17 static int compare_by_number(const void *a1, const void *a2)
  18 {
  19         const struct string_list_item *i1 = a1, *i2 = a2;
  20         const struct string_list *l1 = i1->util, *l2 = i2->util;
  21
  22         if (l1->nr < l2->nr)
  23                 return 1;
  24         else if (l1->nr == l2->nr)
  25                 return 0;
  26         else
  27                 return -1;
  28 }
  29
  30 static void insert_one_record(struct shortlog *log,
  31                               const char *author,
  32                               const char *oneline)
  33 {
  34         const char *dot3 = log->common_repo_prefix;
  35         char *buffer, *p;
  36         struct string_list_item *item;
  37         const char *mailbuf, *namebuf;
  38         size_t namelen, maillen;
  39         const char *eol;
  40         struct strbuf subject = STRBUF_INIT;
  41         struct strbuf namemailbuf = STRBUF_INIT;
  42         struct ident_split ident;
  43
  44         if (split_ident_line(&ident, author, strlen(author)))
  45                 return;
  46
  47         namebuf = ident.name_begin;
  48         mailbuf = ident.mail_begin;
  49         namelen = ident.name_end - ident.name_begin;
  50         maillen = ident.mail_end - ident.mail_begin;
  51
  52         map_user(&log->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
  53         strbuf_add(&namemailbuf, namebuf, namelen);
  54
  55         if (log->email)
  56                 strbuf_addf(&namemailbuf, " <%.*s>", (int)maillen, mailbuf);
  57
  58         item = string_list_insert(&log->list, namemailbuf.buf);
  59         if (item->util == NULL)
  60                 item->util = xcalloc(1, sizeof(struct string_list));
  61
  62         /* Skip any leading whitespace, including any blank lines. */
  63         while (*oneline && isspace(*oneline))
  64                 oneline++;
  65         eol = strchr(oneline, '\n');
  66         if (!eol)
  67                 eol = oneline + strlen(oneline);
  68         if (!prefixcmp(oneline, "[PATCH")) {
  69                 char *eob = strchr(oneline, ']');
  70                 if (eob && (!eol || eob < eol))
  71                         oneline = eob + 1;
  72         }
  73         while (*oneline && isspace(*oneline) && *oneline != '\n')
  74                 oneline++;
  75         format_subject(&subject, oneline, " ");
  76         buffer = strbuf_detach(&subject, NULL);
  77
  78         if (dot3) {
  79                 int dot3len = strlen(dot3);
  80                 if (dot3len > 5) {
  81                         while ((p = strstr(buffer, dot3)) != NULL) {
  82                                 int taillen = strlen(p) - dot3len;
  83                                 memcpy(p, "/.../", 5);
  84                                 memmove(p + 5, p + dot3len, taillen + 1);
  85                         }
  86                 }
  87         }
  88
  89         string_list_append(item->util, buffer);
  90 }
  91
  92 static void read_from_stdin(struct shortlog *log)
  93 {
  94         char author[1024], oneline[1024];
  95
  96         while (fgets(author, sizeof(author), stdin) != NULL) {
  97                 if (!(author[0] == 'A' || author[0] == 'a') ||
  98                     prefixcmp(author + 1, "uthor: "))
  99                         continue;
 100                 while (fgets(oneline, sizeof(oneline), stdin) &&
 101                        oneline[0] != '\n')
 102                         ; /* discard headers */
 103                 while (fgets(oneline, sizeof(oneline), stdin) &&
 104                        oneline[0] == '\n')
 105                         ; /* discard blanks */
 106                 insert_one_record(log, author + 8, oneline);
 107         }
 108 }
 109
 110 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 111 {
 112         const char *author = NULL, *buffer;
 113         struct strbuf buf = STRBUF_INIT;
 114         struct strbuf ufbuf = STRBUF_INIT;
 115
 116         pp_commit_easy(CMIT_FMT_RAW, commit, &buf);
 117         buffer = buf.buf;
 118         while (*buffer && *buffer != '\n') {
 119                 const char *eol = strchr(buffer, '\n');
 120
 121                 if (eol == NULL)
 122                         eol = buffer + strlen(buffer);
 123                 else
 124                         eol++;
 125
 126                 if (!prefixcmp(buffer, "author "))
 127                         author = buffer + 7;
 128                 buffer = eol;
 129         }
 130         if (!author)
 131                 die(_("Missing author: %s"),
 132                     sha1_to_hex(commit->object.sha1));
 133         if (log->user_format) {
 134                 struct pretty_print_context ctx = {0};
 135                 ctx.fmt = CMIT_FMT_USERFORMAT;
 136                 ctx.abbrev = log->abbrev;
 137                 ctx.subject = "";
 138                 ctx.after_subject = "";
 139                 ctx.date_mode = DATE_NORMAL;
 140                 pretty_print_commit(&ctx, commit, &ufbuf);
 141                 buffer = ufbuf.buf;
 142         } else if (*buffer) {
 143                 buffer++;
 144         }
 145         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 146         strbuf_release(&ufbuf);
 147         strbuf_release(&buf);
 148 }
 149
 150 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 151 {
 152         struct commit *commit;
 153
 154         if (prepare_revision_walk(rev))
 155                 die(_("revision walk setup failed"));
 156         while ((commit = get_revision(rev)) != NULL)
 157                 shortlog_add_commit(log, commit);
 158 }
 159
 160 static int parse_uint(char const **arg, int comma, int defval)
 161 {
 162         unsigned long ul;
 163         int ret;
 164         char *endp;
 165
 166         ul = strtoul(*arg, &endp, 10);
 167         if (*endp && *endp != comma)
 168                 return -1;
 169         if (ul > INT_MAX)
 170                 return -1;
 171         ret = *arg == endp ? defval : (int)ul;
 172         *arg = *endp ? endp + 1 : endp;
 173         return ret;
 174 }
 175
 176 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 177 #define DEFAULT_WRAPLEN 76
 178 #define DEFAULT_INDENT1 6
 179 #define DEFAULT_INDENT2 9
 180
 181 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 182 {
 183         struct shortlog *log = opt->value;
 184
 185         log->wrap_lines = !unset;
 186         if (unset)
 187                 return 0;
 188         if (!arg) {
 189                 log->wrap = DEFAULT_WRAPLEN;
 190                 log->in1 = DEFAULT_INDENT1;
 191                 log->in2 = DEFAULT_INDENT2;
 192                 return 0;
 193         }
 194
 195         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 196         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 197         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 198         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 199                 return error(wrap_arg_usage);
 200         if (log->wrap &&
 201             ((log->in1 && log->wrap <= log->in1) ||
 202              (log->in2 && log->wrap <= log->in2)))
 203                 return error(wrap_arg_usage);
 204         return 0;
 205 }
 206
 207 void shortlog_init(struct shortlog *log)
 208 {
 209         memset(log, 0, sizeof(*log));
 210
 211         read_mailmap(&log->mailmap, &log->common_repo_prefix);
 212
 213         log->list.strdup_strings = 1;
 214         log->wrap = DEFAULT_WRAPLEN;
 215         log->in1 = DEFAULT_INDENT1;
 216         log->in2 = DEFAULT_INDENT2;
 217 }
 218
 219 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 220 {
 221         static struct shortlog log;
 222         static struct rev_info rev;
 223         int nongit = !startup_info->have_repository;
 224
 225         static const struct option options[] = {
 226                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 227                             N_("sort output according to the number of commits per author")),
 228                 OPT_BOOLEAN('s', "summary", &log.summary,
 229                             N_("Suppress commit descriptions, only provides commit count")),
 230                 OPT_BOOLEAN('e', "email", &log.email,
 231                             N_("Show the email address of each author")),
 232                 { OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
 233                         N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
 234                 OPT_END(),
 235         };
 236
 237         struct parse_opt_ctx_t ctx;
 238
 239         git_config(git_default_config, NULL);
 240         shortlog_init(&log);
 241         init_revisions(&rev, prefix);
 242         parse_options_start(&ctx, argc, argv, prefix, options,
 243                             PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
 244
 245         for (;;) {
 246                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
 247                 case PARSE_OPT_HELP:
 248                         exit(129);
 249                 case PARSE_OPT_DONE:
 250                         goto parse_done;
 251                 }
 252                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 253         }
 254 parse_done:
 255         argc = parse_options_end(&ctx);
 256
 257         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 258                 error(_("unrecognized argument: %s"), argv[1]);
 259                 usage_with_options(shortlog_usage, options);
 260         }
 261
 262         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 263         log.abbrev = rev.abbrev;
 264
 265         /* assume HEAD if from a tty */
 266         if (!nongit && !rev.pending.nr && isatty(0))
 267                 add_head_to_pending(&rev);
 268         if (rev.pending.nr == 0) {
 269                 if (isatty(0))
 270                         fprintf(stderr, _("(reading log message from standard input)\n"));
 271                 read_from_stdin(&log);
 272         }
 273         else
 274                 get_from_rev(&rev, &log);
 275
 276         shortlog_output(&log);
 277         return 0;
 278 }
 279
 280 static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
 281                                      const struct shortlog *log)
 282 {
 283         strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
 284         strbuf_addch(sb, '\n');
 285 }
 286
 287 void shortlog_output(struct shortlog *log)
 288 {
 289         int i, j;
 290         struct strbuf sb = STRBUF_INIT;
 291
 292         if (log->sort_by_number)
 293                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 294                         compare_by_number);
 295         for (i = 0; i < log->list.nr; i++) {
 296                 struct string_list *onelines = log->list.items[i].util;
 297
 298                 if (log->summary) {
 299                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 300                 } else {
 301                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 302                         for (j = onelines->nr - 1; j >= 0; j--) {
 303                                 const char *msg = onelines->items[j].string;
 304
 305                                 if (log->wrap_lines) {
 306                                         strbuf_reset(&sb);
 307                                         add_wrapped_shortlog_msg(&sb, msg, log);
 308                                         fwrite(sb.buf, sb.len, 1, stdout);
 309                                 }
 310                                 else
 311                                         printf("      %s\n", msg);
 312                         }
 313                         putchar('\n');
 314                 }
 315
 316                 onelines->strdup_strings = 1;
 317                 string_list_clear(onelines, 0);
 318                 free(onelines);
 319                 log->list.items[i].util = NULL;
 320         }
 321
 322         strbuf_release(&sb);
 323         log->list.strdup_strings = 1;
 324         string_list_clear(&log->list, 1);
 325         clear_mailmap(&log->mailmap);
 326 }