Andrew's git - gitweb.git/blob

bdd952c2524140f35f788f5e0cd906c3b390dbe4
   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 <string.h>
   8
   9static const char shortlog_usage[] =
  10"git-shortlog [-n] [-s] [<commit-id>... ]";
  11
  12static int compare_by_number(const void *a1, const void *a2)
  13{
  14        const struct path_list_item *i1 = a1, *i2 = a2;
  15        const struct path_list *l1 = i1->util, *l2 = i2->util;
  16
  17        if (l1->nr < l2->nr)
  18                return 1;
  19        else if (l1->nr == l2->nr)
  20                return 0;
  21        else
  22                return -1;
  23}
  24
  25static struct path_list mailmap = {NULL, 0, 0, 0};
  26
  27static int read_mailmap(const char *filename)
  28{
  29        char buffer[1024];
  30        FILE *f = fopen(filename, "r");
  31
  32        if (f == NULL)
  33                return 1;
  34        while (fgets(buffer, sizeof(buffer), f) != NULL) {
  35                char *end_of_name, *left_bracket, *right_bracket;
  36                char *name, *email;
  37                int i;
  38                if (buffer[0] == '#')
  39                        continue;
  40                if ((left_bracket = strchr(buffer, '<')) == NULL)
  41                        continue;
  42                if ((right_bracket = strchr(left_bracket + 1, '>')) == NULL)
  43                        continue;
  44                if (right_bracket == left_bracket + 1)
  45                        continue;
  46                for (end_of_name = left_bracket; end_of_name != buffer
  47                                && isspace(end_of_name[-1]); end_of_name--)
  48                        /* keep on looking */
  49                if (end_of_name == buffer)
  50                        continue;
  51                name = xmalloc(end_of_name - buffer + 1);
  52                strlcpy(name, buffer, end_of_name - buffer + 1);
  53                email = xmalloc(right_bracket - left_bracket);
  54                for (i = 0; i < right_bracket - left_bracket - 1; i++)
  55                        email[i] = tolower(left_bracket[i + 1]);
  56                email[right_bracket - left_bracket - 1] = '\0';
  57                path_list_insert(email, &mailmap)->util = name;
  58        }
  59        fclose(f);
  60        return 0;
  61}
  62
  63static int map_email(char *email, char *name, int maxlen)
  64{
  65        char *p;
  66        struct path_list_item *item;
  67
  68        /* autocomplete common developers */
  69        p = strchr(email, '>');
  70        if (!p)
  71                return 0;
  72
  73        *p = '\0';
  74        /* downcase the email address */
  75        for (p = email; *p; p++)
  76                *p = tolower(*p);
  77        item = path_list_lookup(email, &mailmap);
  78        if (item != NULL) {
  79                const char *realname = (const char *)item->util;
  80                strncpy(name, realname, maxlen);
  81                return 1;
  82        }
  83        return 0;
  84}
  85
  86static void insert_author_oneline(struct path_list *list,
  87                const char *author, int authorlen,
  88                const char *oneline, int onelinelen)
  89{
  90        const char *dot3 = "/pub/scm/linux/kernel/git/";
  91        char *buffer, *p;
  92        struct path_list_item *item;
  93        struct path_list *onelines;
  94
  95        while (authorlen > 0 && isspace(author[authorlen - 1]))
  96                authorlen--;
  97
  98        buffer = xmalloc(authorlen + 1);
  99        memcpy(buffer, author, authorlen);
 100        buffer[authorlen] = '\0';
 101
 102        item = path_list_insert(buffer, list);
 103        if (item->util == NULL)
 104                item->util = xcalloc(1, sizeof(struct path_list));
 105        else
 106                free(buffer);
 107
 108        if (!strncmp(oneline, "[PATCH", 6)) {
 109                char *eob = strchr(oneline, ']');
 110
 111                if (eob) {
 112                        while (isspace(eob[1]) && eob[1] != '\n')
 113                                eob++;
 114                        if (eob - oneline < onelinelen) {
 115                                onelinelen -= eob - oneline;
 116                                oneline = eob;
 117                        }
 118                }
 119        }
 120
 121        while (onelinelen > 0 && isspace(oneline[0])) {
 122                oneline++;
 123                onelinelen--;
 124        }
 125
 126        while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
 127                onelinelen--;
 128
 129        buffer = xmalloc(onelinelen + 1);
 130        memcpy(buffer, oneline, onelinelen);
 131        buffer[onelinelen] = '\0';
 132
 133        if (dot3) {
 134                int dot3len = strlen(dot3);
 135                if (dot3len > 5) {
 136                        while ((p = strstr(buffer, dot3)) != NULL) {
 137                                int taillen = strlen(p) - dot3len;
 138                                memcpy(p, "/.../", 5);
 139                                memmove(p + 5, p + dot3len, taillen + 1);
 140                        }
 141                }
 142        }
 143
 144        onelines = item->util;
 145        if (onelines->nr >= onelines->alloc) {
 146                onelines->alloc = alloc_nr(onelines->nr);
 147                onelines->items = xrealloc(onelines->items,
 148                                onelines->alloc
 149                                * sizeof(struct path_list_item));
 150        }
 151
 152        onelines->items[onelines->nr].util = NULL;
 153        onelines->items[onelines->nr++].path = buffer;
 154}
 155
 156static void read_from_stdin(struct path_list *list)
 157{
 158        char buffer[1024];
 159
 160        while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
 161                char *bob;
 162                if ((buffer[0] == 'A' || buffer[0] == 'a') &&
 163                                !strncmp(buffer + 1, "uthor: ", 7) &&
 164                                (bob = strchr(buffer + 7, '<')) != NULL) {
 165                        char buffer2[1024], offset = 0;
 166
 167                        if (map_email(bob + 1, buffer, sizeof(buffer)))
 168                                bob = buffer + strlen(buffer);
 169                        else {
 170                                offset = 8;
 171                                while (isspace(bob[-1]))
 172                                        bob--;
 173                        }
 174
 175                        while (fgets(buffer2, sizeof(buffer2), stdin) &&
 176                                        buffer2[0] != '\n')
 177                                ; /* chomp input */
 178                        if (fgets(buffer2, sizeof(buffer2), stdin))
 179                                insert_author_oneline(list,
 180                                                buffer + offset,
 181                                                bob - buffer - offset,
 182                                                buffer2, strlen(buffer2));
 183                }
 184        }
 185}
 186
 187static void get_from_rev(struct rev_info *rev, struct path_list *list)
 188{
 189        char scratch[1024];
 190        struct commit *commit;
 191
 192        prepare_revision_walk(rev);
 193        while ((commit = get_revision(rev)) != NULL) {
 194                char *author = NULL, *oneline, *buffer;
 195                int authorlen = authorlen, onelinelen;
 196
 197                /* get author and oneline */
 198                for (buffer = commit->buffer; buffer && *buffer != '\0' &&
 199                                *buffer != '\n'; ) {
 200                        char *eol = strchr(buffer, '\n');
 201
 202                        if (eol == NULL)
 203                                eol = buffer + strlen(buffer);
 204                        else
 205                                eol++;
 206
 207                        if (!strncmp(buffer, "author ", 7)) {
 208                                char *bracket = strchr(buffer, '<');
 209
 210                                if (bracket == NULL || bracket > eol)
 211                                        die("Invalid commit buffer: %s",
 212                                            sha1_to_hex(commit->object.sha1));
 213
 214                                if (map_email(bracket + 1, scratch,
 215                                                        sizeof(scratch))) {
 216                                        author = scratch;
 217                                        authorlen = strlen(scratch);
 218                                } else {
 219                                        while (bracket[-1] == ' ')
 220                                                bracket--;
 221
 222                                        author = buffer + 7;
 223                                        authorlen = bracket - buffer - 7;
 224                                }
 225                        }
 226                        buffer = eol;
 227                }
 228
 229                if (author == NULL)
 230                        die ("Missing author: %s",
 231                                        sha1_to_hex(commit->object.sha1));
 232
 233                if (buffer == NULL || *buffer == '\0') {
 234                        oneline = "<none>";
 235                        onelinelen = sizeof(oneline) + 1;
 236                } else {
 237                        char *eol;
 238
 239                        oneline = buffer + 1;
 240                        eol = strchr(oneline, '\n');
 241                        if (eol == NULL)
 242                                onelinelen = strlen(oneline);
 243                        else
 244                                onelinelen = eol - oneline;
 245                }
 246
 247                insert_author_oneline(list,
 248                                author, authorlen, oneline, onelinelen);
 249        }
 250
 251}
 252
 253int cmd_shortlog(int argc, const char **argv, const char *prefix)
 254{
 255        struct rev_info rev;
 256        struct path_list list = { NULL, 0, 0, 1 };
 257        int i, j, sort_by_number = 0, summary = 0;
 258
 259        /* since -n is a shadowed rev argument, parse our args first */
 260        while (argc > 1) {
 261                if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 262                        sort_by_number = 1;
 263                else if (!strcmp(argv[1], "-s") ||
 264                                !strcmp(argv[1], "--summary"))
 265                        summary = 1;
 266                else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 267                        usage(shortlog_usage);
 268                else
 269                        break;
 270                argv++;
 271                argc--;
 272        }
 273        init_revisions(&rev, prefix);
 274        argc = setup_revisions(argc, argv, &rev, NULL);
 275        if (argc > 1)
 276                die ("unrecognized argument: %s", argv[1]);
 277
 278        if (!access(".mailmap", R_OK))
 279                read_mailmap(".mailmap");
 280
 281        if (rev.pending.nr == 1)
 282                die ("Need a range!");
 283        else if (rev.pending.nr == 0)
 284                read_from_stdin(&list);
 285        else
 286                get_from_rev(&rev, &list);
 287
 288        if (sort_by_number)
 289                qsort(list.items, list.nr, sizeof(struct path_list_item),
 290                        compare_by_number);
 291
 292        for (i = 0; i < list.nr; i++) {
 293                struct path_list *onelines = list.items[i].util;
 294
 295                if (summary) {
 296                        printf("%s: %d\n", list.items[i].path, onelines->nr);
 297                } else {
 298                        printf("%s (%d):\n", list.items[i].path, onelines->nr);
 299                        for (j = onelines->nr - 1; j >= 0; j--)
 300                                printf("      %s\n", onelines->items[j].path);
 301                        printf("\n");
 302                }
 303
 304                onelines->strdup_paths = 1;
 305                path_list_clear(onelines, 1);
 306                free(onelines);
 307                list.items[i].util = NULL;
 308        }
 309
 310        list.strdup_paths = 1;
 311        path_list_clear(&list, 1);
 312        mailmap.strdup_paths = 1;
 313        path_list_clear(&mailmap, 1);
 314
 315        return 0;
 316}
 317