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 "path-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 path_list_item *i1 = a1, *i2 = a2;
  22        const struct path_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 path_list_item *item;
  39        struct path_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 = path_list_insert(buffer, &log->list);
  73        if (item->util == NULL)
  74                item->util = xcalloc(1, sizeof(struct path_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 path_list_item));
 113        }
 114
 115        onelines->items[onelines->nr].util = NULL;
 116        onelines->items[onelines->nr++].path = 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 (*buffer)
 158                buffer++;
 159        insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 160}
 161
 162static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 163{
 164        struct commit *commit;
 165
 166        if (prepare_revision_walk(rev))
 167                die("revision walk setup failed");
 168        while ((commit = get_revision(rev)) != NULL)
 169                shortlog_add_commit(log, commit);
 170}
 171
 172static int parse_uint(char const **arg, int comma, int defval)
 173{
 174        unsigned long ul;
 175        int ret;
 176        char *endp;
 177
 178        ul = strtoul(*arg, &endp, 10);
 179        if (*endp && *endp != comma)
 180                return -1;
 181        if (ul > INT_MAX)
 182                return -1;
 183        ret = *arg == endp ? defval : (int)ul;
 184        *arg = *endp ? endp + 1 : endp;
 185        return ret;
 186}
 187
 188static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 189#define DEFAULT_WRAPLEN 76
 190#define DEFAULT_INDENT1 6
 191#define DEFAULT_INDENT2 9
 192
 193static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 194{
 195        struct shortlog *log = opt->value;
 196
 197        log->wrap_lines = !unset;
 198        if (unset)
 199                return 0;
 200        if (!arg) {
 201                log->wrap = DEFAULT_WRAPLEN;
 202                log->in1 = DEFAULT_INDENT1;
 203                log->in2 = DEFAULT_INDENT2;
 204                return 0;
 205        }
 206
 207        log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 208        log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 209        log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 210        if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 211                return error(wrap_arg_usage);
 212        if (log->wrap &&
 213            ((log->in1 && log->wrap <= log->in1) ||
 214             (log->in2 && log->wrap <= log->in2)))
 215                return error(wrap_arg_usage);
 216        return 0;
 217}
 218
 219void shortlog_init(struct shortlog *log)
 220{
 221        memset(log, 0, sizeof(*log));
 222
 223        read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 224
 225        log->list.strdup_paths = 1;
 226        log->wrap = DEFAULT_WRAPLEN;
 227        log->in1 = DEFAULT_INDENT1;
 228        log->in2 = DEFAULT_INDENT2;
 229}
 230
 231int cmd_shortlog(int argc, const char **argv, const char *prefix)
 232{
 233        static struct shortlog log;
 234        static struct rev_info rev;
 235        int nongit;
 236
 237        static const struct option options[] = {
 238                OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
 239                            "sort output according to the number of commits per author"),
 240                OPT_BOOLEAN('s', "summary", &log.summary,
 241                            "Suppress commit descriptions, only provides commit count"),
 242                OPT_BOOLEAN('e', "email", &log.email,
 243                            "Show the email address of each author"),
 244                { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
 245                        "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
 246                OPT_END(),
 247        };
 248
 249        struct parse_opt_ctx_t ctx;
 250
 251        prefix = setup_git_directory_gently(&nongit);
 252        shortlog_init(&log);
 253        init_revisions(&rev, prefix);
 254        parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
 255                            PARSE_OPT_KEEP_ARGV0);
 256
 257        for (;;) {
 258                switch (parse_options_step(&ctx, options, shortlog_usage)) {
 259                case PARSE_OPT_HELP:
 260                        exit(129);
 261                case PARSE_OPT_DONE:
 262                        goto parse_done;
 263                }
 264                parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 265        }
 266parse_done:
 267        argc = parse_options_end(&ctx);
 268
 269        if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 270                error("unrecognized argument: %s", argv[1]);
 271                usage_with_options(shortlog_usage, options);
 272        }
 273
 274        /* assume HEAD if from a tty */
 275        if (!nongit && !rev.pending.nr && isatty(0))
 276                add_head_to_pending(&rev);
 277        if (rev.pending.nr == 0) {
 278                read_from_stdin(&log);
 279        }
 280        else
 281                get_from_rev(&rev, &log);
 282
 283        shortlog_output(&log);
 284        return 0;
 285}
 286
 287void shortlog_output(struct shortlog *log)
 288{
 289        int i, j;
 290        if (log->sort_by_number)
 291                qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
 292                        compare_by_number);
 293        for (i = 0; i < log->list.nr; i++) {
 294                struct path_list *onelines = log->list.items[i].util;
 295
 296                if (log->summary) {
 297                        printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
 298                } else {
 299                        printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
 300                        for (j = onelines->nr - 1; j >= 0; j--) {
 301                                const char *msg = onelines->items[j].path;
 302
 303                                if (log->wrap_lines) {
 304                                        int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 305                                        if (col != log->wrap)
 306                                                putchar('\n');
 307                                }
 308                                else
 309                                        printf("      %s\n", msg);
 310                        }
 311                        putchar('\n');
 312                }
 313
 314                onelines->strdup_paths = 1;
 315                path_list_clear(onelines, 1);
 316                free(onelines);
 317                log->list.items[i].util = NULL;
 318        }
 319
 320        log->list.strdup_paths = 1;
 321        path_list_clear(&log->list, 1);
 322        log->mailmap.strdup_paths = 1;
 323        path_list_clear(&log->mailmap, 1);
 324}