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
  32static 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        struct string_list *onelines;
  40        char namebuf[1024];
  41        size_t len;
  42        const char *eol;
  43        const char *boemail, *eoemail;
  44
  45        boemail = strchr(author, '<');
  46        if (!boemail)
  47                return;
  48        eoemail = strchr(boemail, '>');
  49        if (!eoemail)
  50                return;
  51        if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  52                while (author < boemail && isspace(*author))
  53                        author++;
  54                for (len = 0;
  55                     len < sizeof(namebuf) - 1 && author + len < boemail;
  56                     len++)
  57                        namebuf[len] = author[len];
  58                while (0 < len && isspace(namebuf[len-1]))
  59                        len--;
  60                namebuf[len] = '\0';
  61        }
  62        else
  63                len = strlen(namebuf);
  64
  65        if (log->email) {
  66                size_t room = sizeof(namebuf) - len - 1;
  67                int maillen = eoemail - boemail + 1;
  68                snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  69        }
  70
  71        buffer = xstrdup(namebuf);
  72        item = string_list_insert(buffer, &log->list);
  73        if (item->util == NULL)
  74                item->util = xcalloc(1, sizeof(struct string_list));
  75        else
  76                free(buffer);
  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        while (len && isspace(oneline[len-1]))
  93                len--;
  94        buffer = xmemdupz(oneline, len);
  95
  96        if (dot3) {
  97                int dot3len = strlen(dot3);
  98                if (dot3len > 5) {
  99                        while ((p = strstr(buffer, dot3)) != NULL) {
 100                                int taillen = strlen(p) - dot3len;
 101                                memcpy(p, "/.../", 5);
 102                                memmove(p + 5, p + dot3len, taillen + 1);
 103                        }
 104                }
 105        }
 106
 107        onelines = item->util;
 108        if (onelines->nr >= onelines->alloc) {
 109                onelines->alloc = alloc_nr(onelines->nr);
 110                onelines->items = xrealloc(onelines->items,
 111                                onelines->alloc
 112                                * sizeof(struct string_list_item));
 113        }
 114
 115        onelines->items[onelines->nr].util = NULL;
 116        onelines->items[onelines->nr++].string = buffer;
 117}
 118
 119static void read_from_stdin(struct shortlog *log)
 120{
 121        char author[1024], oneline[1024];
 122
 123        while (fgets(author, sizeof(author), stdin) != NULL) {
 124                if (!(author[0] == 'A' || author[0] == 'a') ||
 125                    prefixcmp(author + 1, "uthor: "))
 126                        continue;
 127                while (fgets(oneline, sizeof(oneline), stdin) &&
 128                       oneline[0] != '\n')
 129                        ; /* discard headers */
 130                while (fgets(oneline, sizeof(oneline), stdin) &&
 131                       oneline[0] == '\n')
 132                        ; /* discard blanks */
 133                insert_one_record(log, author + 8, oneline);
 134        }
 135}
 136
 137void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 138{
 139        const char *author = NULL, *buffer;
 140
 141        buffer = commit->buffer;
 142        while (*buffer && *buffer != '\n') {
 143                const char *eol = strchr(buffer, '\n');
 144
 145                if (eol == NULL)
 146                        eol = buffer + strlen(buffer);
 147                else
 148                        eol++;
 149
 150                if (!prefixcmp(buffer, "author "))
 151                        author = buffer + 7;
 152                buffer = eol;
 153        }
 154        if (!author)
 155                die("Missing author: %s",
 156                    sha1_to_hex(commit->object.sha1));
 157        if (log->user_format) {
 158                struct strbuf buf = STRBUF_INIT;
 159
 160                pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &buf,
 161                        DEFAULT_ABBREV, "", "", DATE_NORMAL, 0);
 162                insert_one_record(log, author, buf.buf);
 163                strbuf_release(&buf);
 164                return;
 165        }
 166        if (*buffer)
 167                buffer++;
 168        insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 169}
 170
 171static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 172{
 173        struct commit *commit;
 174
 175        if (prepare_revision_walk(rev))
 176                die("revision walk setup failed");
 177        while ((commit = get_revision(rev)) != NULL)
 178                shortlog_add_commit(log, commit);
 179}
 180
 181static int parse_uint(char const **arg, int comma, int defval)
 182{
 183        unsigned long ul;
 184        int ret;
 185        char *endp;
 186
 187        ul = strtoul(*arg, &endp, 10);
 188        if (*endp && *endp != comma)
 189                return -1;
 190        if (ul > INT_MAX)
 191                return -1;
 192        ret = *arg == endp ? defval : (int)ul;
 193        *arg = *endp ? endp + 1 : endp;
 194        return ret;
 195}
 196
 197static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 198#define DEFAULT_WRAPLEN 76
 199#define DEFAULT_INDENT1 6
 200#define DEFAULT_INDENT2 9
 201
 202static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 203{
 204        struct shortlog *log = opt->value;
 205
 206        log->wrap_lines = !unset;
 207        if (unset)
 208                return 0;
 209        if (!arg) {
 210                log->wrap = DEFAULT_WRAPLEN;
 211                log->in1 = DEFAULT_INDENT1;
 212                log->in2 = DEFAULT_INDENT2;
 213                return 0;
 214        }
 215
 216        log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 217        log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 218        log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 219        if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 220                return error(wrap_arg_usage);
 221        if (log->wrap &&
 222            ((log->in1 && log->wrap <= log->in1) ||
 223             (log->in2 && log->wrap <= log->in2)))
 224                return error(wrap_arg_usage);
 225        return 0;
 226}
 227
 228void shortlog_init(struct shortlog *log)
 229{
 230        memset(log, 0, sizeof(*log));
 231
 232        read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 233
 234        log->list.strdup_strings = 1;
 235        log->wrap = DEFAULT_WRAPLEN;
 236        log->in1 = DEFAULT_INDENT1;
 237        log->in2 = DEFAULT_INDENT2;
 238}
 239
 240int cmd_shortlog(int argc, const char **argv, const char *prefix)
 241{
 242        static struct shortlog log;
 243        static struct rev_info rev;
 244        int nongit;
 245
 246        static const struct option options[] = {
 247                OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 248                            "sort output according to the number of commits per author"),
 249                OPT_BOOLEAN('s', "summary", &log.summary,
 250                            "Suppress commit descriptions, only provides commit count"),
 251                OPT_BOOLEAN('e', "email", &log.email,
 252                            "Show the email address of each author"),
 253                { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
 254                        "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
 255                OPT_END(),
 256        };
 257
 258        struct parse_opt_ctx_t ctx;
 259
 260        prefix = setup_git_directory_gently(&nongit);
 261        shortlog_init(&log);
 262        init_revisions(&rev, prefix);
 263        parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
 264                            PARSE_OPT_KEEP_ARGV0);
 265
 266        for (;;) {
 267                switch (parse_options_step(&ctx, options, shortlog_usage)) {
 268                case PARSE_OPT_HELP:
 269                        exit(129);
 270                case PARSE_OPT_DONE:
 271                        goto parse_done;
 272                }
 273                parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 274        }
 275parse_done:
 276        argc = parse_options_end(&ctx);
 277
 278        if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 279                error("unrecognized argument: %s", argv[1]);
 280                usage_with_options(shortlog_usage, options);
 281        }
 282
 283        log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 284
 285        /* assume HEAD if from a tty */
 286        if (!nongit && !rev.pending.nr && isatty(0))
 287                add_head_to_pending(&rev);
 288        if (rev.pending.nr == 0) {
 289                read_from_stdin(&log);
 290        }
 291        else
 292                get_from_rev(&rev, &log);
 293
 294        shortlog_output(&log);
 295        return 0;
 296}
 297
 298void shortlog_output(struct shortlog *log)
 299{
 300        int i, j;
 301        if (log->sort_by_number)
 302                qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
 303                        compare_by_number);
 304        for (i = 0; i < log->list.nr; i++) {
 305                struct string_list *onelines = log->list.items[i].util;
 306
 307                if (log->summary) {
 308                        printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
 309                } else {
 310                        printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
 311                        for (j = onelines->nr - 1; j >= 0; j--) {
 312                                const char *msg = onelines->items[j].string;
 313
 314                                if (log->wrap_lines) {
 315                                        int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 316                                        if (col != log->wrap)
 317                                                putchar('\n');
 318                                }
 319                                else
 320                                        printf("      %s\n", msg);
 321                        }
 322                        putchar('\n');
 323                }
 324
 325                onelines->strdup_strings = 1;
 326                string_list_clear(onelines, 1);
 327                free(onelines);
 328                log->list.items[i].util = NULL;
 329        }
 330
 331        log->list.strdup_strings = 1;
 332        string_list_clear(&log->list, 1);
 333        log->mailmap.strdup_strings = 1;
 334        string_list_clear(&log->mailmap, 1);
 335}