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
  11static const char shortlog_usage[] =
  12"git-shortlog [-n] [-s] [-e] [<commit-id>... ]";
  13
  14static int compare_by_number(const void *a1, const void *a2)
  15{
  16        const struct path_list_item *i1 = a1, *i2 = a2;
  17        const struct path_list *l1 = i1->util, *l2 = i2->util;
  18
  19        if (l1->nr < l2->nr)
  20                return 1;
  21        else if (l1->nr == l2->nr)
  22                return 0;
  23        else
  24                return -1;
  25}
  26
  27static void insert_one_record(struct shortlog *log,
  28                              const char *author,
  29                              const char *oneline)
  30{
  31        const char *dot3 = log->common_repo_prefix;
  32        char *buffer, *p;
  33        struct path_list_item *item;
  34        struct path_list *onelines;
  35        char namebuf[1024];
  36        size_t len;
  37        const char *eol;
  38        const char *boemail, *eoemail;
  39
  40        boemail = strchr(author, '<');
  41        if (!boemail)
  42                return;
  43        eoemail = strchr(boemail, '>');
  44        if (!eoemail)
  45                return;
  46        if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
  47                while (author < boemail && isspace(*author))
  48                        author++;
  49                for (len = 0;
  50                     len < sizeof(namebuf) - 1 && author + len < boemail;
  51                     len++)
  52                        namebuf[len] = author[len];
  53                while (0 < len && isspace(namebuf[len-1]))
  54                        len--;
  55                namebuf[len] = '\0';
  56        }
  57        else
  58                len = strlen(namebuf);
  59
  60        if (log->email) {
  61                size_t room = sizeof(namebuf) - len - 1;
  62                int maillen = eoemail - boemail + 1;
  63                snprintf(namebuf + len, room, " %.*s", maillen, boemail);
  64        }
  65
  66        buffer = xstrdup(namebuf);
  67        item = path_list_insert(buffer, &log->list);
  68        if (item->util == NULL)
  69                item->util = xcalloc(1, sizeof(struct path_list));
  70        else
  71                free(buffer);
  72
  73        eol = strchr(oneline, '\n');
  74        if (!eol)
  75                eol = oneline + strlen(oneline);
  76        while (*oneline && isspace(*oneline) && *oneline != '\n')
  77                oneline++;
  78        if (!prefixcmp(oneline, "[PATCH")) {
  79                char *eob = strchr(oneline, ']');
  80                if (eob && (!eol || eob < eol))
  81                        oneline = eob + 1;
  82        }
  83        while (*oneline && isspace(*oneline) && *oneline != '\n')
  84                oneline++;
  85        len = eol - oneline;
  86        while (len && isspace(oneline[len-1]))
  87                len--;
  88        buffer = xmemdupz(oneline, len);
  89
  90        if (dot3) {
  91                int dot3len = strlen(dot3);
  92                if (dot3len > 5) {
  93                        while ((p = strstr(buffer, dot3)) != NULL) {
  94                                int taillen = strlen(p) - dot3len;
  95                                memcpy(p, "/.../", 5);
  96                                memmove(p + 5, p + dot3len, taillen + 1);
  97                        }
  98                }
  99        }
 100
 101        onelines = item->util;
 102        if (onelines->nr >= onelines->alloc) {
 103                onelines->alloc = alloc_nr(onelines->nr);
 104                onelines->items = xrealloc(onelines->items,
 105                                onelines->alloc
 106                                * sizeof(struct path_list_item));
 107        }
 108
 109        onelines->items[onelines->nr].util = NULL;
 110        onelines->items[onelines->nr++].path = buffer;
 111}
 112
 113static void read_from_stdin(struct shortlog *log)
 114{
 115        char author[1024], oneline[1024];
 116
 117        while (fgets(author, sizeof(author), stdin) != NULL) {
 118                if (!(author[0] == 'A' || author[0] == 'a') ||
 119                    prefixcmp(author + 1, "uthor: "))
 120                        continue;
 121                while (fgets(oneline, sizeof(oneline), stdin) &&
 122                       oneline[0] != '\n')
 123                        ; /* discard headers */
 124                while (fgets(oneline, sizeof(oneline), stdin) &&
 125                       oneline[0] == '\n')
 126                        ; /* discard blanks */
 127                insert_one_record(log, author + 8, oneline);
 128        }
 129}
 130
 131void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 132{
 133        const char *author = NULL, *buffer;
 134
 135        buffer = commit->buffer;
 136        while (*buffer && *buffer != '\n') {
 137                const char *eol = strchr(buffer, '\n');
 138
 139                if (eol == NULL)
 140                        eol = buffer + strlen(buffer);
 141                else
 142                        eol++;
 143
 144                if (!prefixcmp(buffer, "author "))
 145                        author = buffer + 7;
 146                buffer = eol;
 147        }
 148        if (!author)
 149                die("Missing author: %s",
 150                    sha1_to_hex(commit->object.sha1));
 151        if (*buffer)
 152                buffer++;
 153        insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 154}
 155
 156static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 157{
 158        struct commit *commit;
 159
 160        if (prepare_revision_walk(rev))
 161                die("revision walk setup failed");
 162        while ((commit = get_revision(rev)) != NULL)
 163                shortlog_add_commit(log, commit);
 164}
 165
 166static int parse_uint(char const **arg, int comma)
 167{
 168        unsigned long ul;
 169        int ret;
 170        char *endp;
 171
 172        ul = strtoul(*arg, &endp, 10);
 173        if (endp != *arg && *endp && *endp != comma)
 174                return -1;
 175        ret = (int) ul;
 176        if (ret != ul)
 177                return -1;
 178        *arg = endp;
 179        if (**arg)
 180                (*arg)++;
 181        return ret;
 182}
 183
 184static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 185#define DEFAULT_WRAPLEN 76
 186#define DEFAULT_INDENT1 6
 187#define DEFAULT_INDENT2 9
 188
 189static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 190{
 191        arg += 2; /* skip -w */
 192
 193        *wrap = parse_uint(&arg, ',');
 194        if (*wrap < 0)
 195                die(wrap_arg_usage);
 196        *in1 = parse_uint(&arg, ',');
 197        if (*in1 < 0)
 198                die(wrap_arg_usage);
 199        *in2 = parse_uint(&arg, '\0');
 200        if (*in2 < 0)
 201                die(wrap_arg_usage);
 202
 203        if (!*wrap)
 204                *wrap = DEFAULT_WRAPLEN;
 205        if (!*in1)
 206                *in1 = DEFAULT_INDENT1;
 207        if (!*in2)
 208                *in2 = DEFAULT_INDENT2;
 209        if (*wrap &&
 210            ((*in1 && *wrap <= *in1) ||
 211             (*in2 && *wrap <= *in2)))
 212                die(wrap_arg_usage);
 213}
 214
 215void shortlog_init(struct shortlog *log)
 216{
 217        memset(log, 0, sizeof(*log));
 218
 219        read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 220
 221        log->list.strdup_paths = 1;
 222        log->wrap = DEFAULT_WRAPLEN;
 223        log->in1 = DEFAULT_INDENT1;
 224        log->in2 = DEFAULT_INDENT2;
 225}
 226
 227int cmd_shortlog(int argc, const char **argv, const char *prefix)
 228{
 229        struct shortlog log;
 230        struct rev_info rev;
 231
 232        shortlog_init(&log);
 233
 234        /* since -n is a shadowed rev argument, parse our args first */
 235        while (argc > 1) {
 236                if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 237                        log.sort_by_number = 1;
 238                else if (!strcmp(argv[1], "-s") ||
 239                                !strcmp(argv[1], "--summary"))
 240                        log.summary = 1;
 241                else if (!strcmp(argv[1], "-e") ||
 242                         !strcmp(argv[1], "--email"))
 243                        log.email = 1;
 244                else if (!prefixcmp(argv[1], "-w")) {
 245                        log.wrap_lines = 1;
 246                        parse_wrap_args(argv[1], &log.in1, &log.in2, &log.wrap);
 247                }
 248                else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 249                        usage(shortlog_usage);
 250                else
 251                        break;
 252                argv++;
 253                argc--;
 254        }
 255        init_revisions(&rev, prefix);
 256        argc = setup_revisions(argc, argv, &rev, NULL);
 257        if (argc > 1)
 258                die ("unrecognized argument: %s", argv[1]);
 259
 260        /* assume HEAD if from a tty */
 261        if (!rev.pending.nr && isatty(0))
 262                add_head_to_pending(&rev);
 263        if (rev.pending.nr == 0) {
 264                read_from_stdin(&log);
 265        }
 266        else
 267                get_from_rev(&rev, &log);
 268
 269        shortlog_output(&log);
 270        return 0;
 271}
 272
 273void shortlog_output(struct shortlog *log)
 274{
 275        int i, j;
 276        if (log->sort_by_number)
 277                qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
 278                        compare_by_number);
 279        for (i = 0; i < log->list.nr; i++) {
 280                struct path_list *onelines = log->list.items[i].util;
 281
 282                if (log->summary) {
 283                        printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
 284                } else {
 285                        printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
 286                        for (j = onelines->nr - 1; j >= 0; j--) {
 287                                const char *msg = onelines->items[j].path;
 288
 289                                if (log->wrap_lines) {
 290                                        int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 291                                        if (col != log->wrap)
 292                                                putchar('\n');
 293                                }
 294                                else
 295                                        printf("      %s\n", msg);
 296                        }
 297                        putchar('\n');
 298                }
 299
 300                onelines->strdup_paths = 1;
 301                path_list_clear(onelines, 1);
 302                free(onelines);
 303                log->list.items[i].util = NULL;
 304        }
 305
 306        log->list.strdup_paths = 1;
 307        path_list_clear(&log->list, 1);
 308        log->mailmap.strdup_paths = 1;
 309        path_list_clear(&log->mailmap, 1);
 310}