Andrew's git - gitweb.git/blob - 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
  12static 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
  19static 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
  32const char *format_subject(struct strbuf *sb, const char *msg,
  33                           const char *line_separator);
  34
  35static 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
 109static 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
 127void 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
 161static 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
 171static 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
 187static 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
 192static 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
 218void 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
 230int 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        }
 265parse_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
 288void 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}