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
   9static const char shortlog_usage[] =
  10"git-shortlog [-n] [-s] [<commit-id>... ]";
  11
  12static char *common_repo_prefix;
  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 struct path_list mailmap = {NULL, 0, 0, 0};
  28
  29static int read_mailmap(const char *filename)
  30{
  31        char buffer[1024];
  32        FILE *f = fopen(filename, "r");
  33
  34        if (f == NULL)
  35                return 1;
  36        while (fgets(buffer, sizeof(buffer), f) != NULL) {
  37                char *end_of_name, *left_bracket, *right_bracket;
  38                char *name, *email;
  39                int i;
  40                if (buffer[0] == '#') {
  41                        static const char abbrev[] = "# repo-abbrev:";
  42                        int abblen = sizeof(abbrev) - 1;
  43                        int len = strlen(buffer);
  44
  45                        if (len && buffer[len - 1] == '\n')
  46                                buffer[--len] = 0;
  47                        if (!strncmp(buffer, abbrev, abblen)) {
  48                                char *cp;
  49
  50                                if (common_repo_prefix)
  51                                        free(common_repo_prefix);
  52                                common_repo_prefix = xmalloc(len);
  53
  54                                for (cp = buffer + abblen; isspace(*cp); cp++)
  55                                        ; /* nothing */
  56                                strcpy(common_repo_prefix, cp);
  57                        }
  58                        continue;
  59                }
  60                if ((left_bracket = strchr(buffer, '<')) == NULL)
  61                        continue;
  62                if ((right_bracket = strchr(left_bracket + 1, '>')) == NULL)
  63                        continue;
  64                if (right_bracket == left_bracket + 1)
  65                        continue;
  66                for (end_of_name = left_bracket; end_of_name != buffer
  67                                && isspace(end_of_name[-1]); end_of_name--)
  68                        /* keep on looking */
  69                if (end_of_name == buffer)
  70                        continue;
  71                name = xmalloc(end_of_name - buffer + 1);
  72                strlcpy(name, buffer, end_of_name - buffer + 1);
  73                email = xmalloc(right_bracket - left_bracket);
  74                for (i = 0; i < right_bracket - left_bracket - 1; i++)
  75                        email[i] = tolower(left_bracket[i + 1]);
  76                email[right_bracket - left_bracket - 1] = '\0';
  77                path_list_insert(email, &mailmap)->util = name;
  78        }
  79        fclose(f);
  80        return 0;
  81}
  82
  83static int map_email(char *email, char *name, int maxlen)
  84{
  85        char *p;
  86        struct path_list_item *item;
  87
  88        /* autocomplete common developers */
  89        p = strchr(email, '>');
  90        if (!p)
  91                return 0;
  92
  93        *p = '\0';
  94        /* downcase the email address */
  95        for (p = email; *p; p++)
  96                *p = tolower(*p);
  97        item = path_list_lookup(email, &mailmap);
  98        if (item != NULL) {
  99                const char *realname = (const char *)item->util;
 100                strncpy(name, realname, maxlen);
 101                return 1;
 102        }
 103        return 0;
 104}
 105
 106static void insert_author_oneline(struct path_list *list,
 107                const char *author, int authorlen,
 108                const char *oneline, int onelinelen)
 109{
 110        const char *dot3 = common_repo_prefix;
 111        char *buffer, *p;
 112        struct path_list_item *item;
 113        struct path_list *onelines;
 114
 115        while (authorlen > 0 && isspace(author[authorlen - 1]))
 116                authorlen--;
 117
 118        buffer = xmalloc(authorlen + 1);
 119        memcpy(buffer, author, authorlen);
 120        buffer[authorlen] = '\0';
 121
 122        item = path_list_insert(buffer, list);
 123        if (item->util == NULL)
 124                item->util = xcalloc(1, sizeof(struct path_list));
 125        else
 126                free(buffer);
 127
 128        if (!prefixcmp(oneline, "[PATCH")) {
 129                char *eob = strchr(oneline, ']');
 130
 131                if (eob) {
 132                        while (isspace(eob[1]) && eob[1] != '\n')
 133                                eob++;
 134                        if (eob - oneline < onelinelen) {
 135                                onelinelen -= eob - oneline;
 136                                oneline = eob;
 137                        }
 138                }
 139        }
 140
 141        while (onelinelen > 0 && isspace(oneline[0])) {
 142                oneline++;
 143                onelinelen--;
 144        }
 145
 146        while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
 147                onelinelen--;
 148
 149        buffer = xmalloc(onelinelen + 1);
 150        memcpy(buffer, oneline, onelinelen);
 151        buffer[onelinelen] = '\0';
 152
 153        if (dot3) {
 154                int dot3len = strlen(dot3);
 155                if (dot3len > 5) {
 156                        while ((p = strstr(buffer, dot3)) != NULL) {
 157                                int taillen = strlen(p) - dot3len;
 158                                memcpy(p, "/.../", 5);
 159                                memmove(p + 5, p + dot3len, taillen + 1);
 160                        }
 161                }
 162        }
 163
 164        onelines = item->util;
 165        if (onelines->nr >= onelines->alloc) {
 166                onelines->alloc = alloc_nr(onelines->nr);
 167                onelines->items = xrealloc(onelines->items,
 168                                onelines->alloc
 169                                * sizeof(struct path_list_item));
 170        }
 171
 172        onelines->items[onelines->nr].util = NULL;
 173        onelines->items[onelines->nr++].path = buffer;
 174}
 175
 176static void read_from_stdin(struct path_list *list)
 177{
 178        char buffer[1024];
 179
 180        while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
 181                char *bob;
 182                if ((buffer[0] == 'A' || buffer[0] == 'a') &&
 183                                !prefixcmp(buffer + 1, "uthor: ") &&
 184                                (bob = strchr(buffer + 7, '<')) != NULL) {
 185                        char buffer2[1024], offset = 0;
 186
 187                        if (map_email(bob + 1, buffer, sizeof(buffer)))
 188                                bob = buffer + strlen(buffer);
 189                        else {
 190                                offset = 8;
 191                                while (buffer + offset < bob &&
 192                                       isspace(bob[-1]))
 193                                        bob--;
 194                        }
 195
 196                        while (fgets(buffer2, sizeof(buffer2), stdin) &&
 197                                        buffer2[0] != '\n')
 198                                ; /* chomp input */
 199                        if (fgets(buffer2, sizeof(buffer2), stdin)) {
 200                                int l2 = strlen(buffer2);
 201                                int i;
 202                                for (i = 0; i < l2; i++)
 203                                        if (!isspace(buffer2[i]))
 204                                                break;
 205                                insert_author_oneline(list,
 206                                                buffer + offset,
 207                                                bob - buffer - offset,
 208                                                buffer2 + i, l2 - i);
 209                        }
 210                }
 211        }
 212}
 213
 214static void get_from_rev(struct rev_info *rev, struct path_list *list)
 215{
 216        char scratch[1024];
 217        struct commit *commit;
 218
 219        prepare_revision_walk(rev);
 220        while ((commit = get_revision(rev)) != NULL) {
 221                const char *author = NULL, *oneline, *buffer;
 222                int authorlen = authorlen, onelinelen;
 223
 224                /* get author and oneline */
 225                for (buffer = commit->buffer; buffer && *buffer != '\0' &&
 226                                *buffer != '\n'; ) {
 227                        const char *eol = strchr(buffer, '\n');
 228
 229                        if (eol == NULL)
 230                                eol = buffer + strlen(buffer);
 231                        else
 232                                eol++;
 233
 234                        if (!prefixcmp(buffer, "author ")) {
 235                                char *bracket = strchr(buffer, '<');
 236
 237                                if (bracket == NULL || bracket > eol)
 238                                        die("Invalid commit buffer: %s",
 239                                            sha1_to_hex(commit->object.sha1));
 240
 241                                if (map_email(bracket + 1, scratch,
 242                                                        sizeof(scratch))) {
 243                                        author = scratch;
 244                                        authorlen = strlen(scratch);
 245                                } else {
 246                                        if (bracket[-1] == ' ')
 247                                                bracket--;
 248
 249                                        author = buffer + 7;
 250                                        authorlen = bracket - buffer - 7;
 251                                }
 252                        }
 253                        buffer = eol;
 254                }
 255
 256                if (author == NULL)
 257                        die ("Missing author: %s",
 258                                        sha1_to_hex(commit->object.sha1));
 259
 260                if (buffer == NULL || *buffer == '\0') {
 261                        oneline = "<none>";
 262                        onelinelen = sizeof(oneline) + 1;
 263                } else {
 264                        char *eol;
 265
 266                        oneline = buffer + 1;
 267                        eol = strchr(oneline, '\n');
 268                        if (eol == NULL)
 269                                onelinelen = strlen(oneline);
 270                        else
 271                                onelinelen = eol - oneline;
 272                }
 273
 274                insert_author_oneline(list,
 275                                author, authorlen, oneline, onelinelen);
 276        }
 277
 278}
 279
 280static int parse_uint(char const **arg, int comma)
 281{
 282        unsigned long ul;
 283        int ret;
 284        char *endp;
 285
 286        ul = strtoul(*arg, &endp, 10);
 287        if (endp != *arg && *endp && *endp != comma)
 288                return -1;
 289        ret = (int) ul;
 290        if (ret != ul)
 291                return -1;
 292        *arg = endp;
 293        if (**arg)
 294                (*arg)++;
 295        return ret;
 296}
 297
 298static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 299#define DEFAULT_WRAPLEN 76
 300#define DEFAULT_INDENT1 6
 301#define DEFAULT_INDENT2 9
 302
 303static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 304{
 305        arg += 2; /* skip -w */
 306
 307        *wrap = parse_uint(&arg, ',');
 308        if (*wrap < 0)
 309                die(wrap_arg_usage);
 310        *in1 = parse_uint(&arg, ',');
 311        if (*in1 < 0)
 312                die(wrap_arg_usage);
 313        *in2 = parse_uint(&arg, '\0');
 314        if (*in2 < 0)
 315                die(wrap_arg_usage);
 316
 317        if (!*wrap)
 318                *wrap = DEFAULT_WRAPLEN;
 319        if (!*in1)
 320                *in1 = DEFAULT_INDENT1;
 321        if (!*in2)
 322                *in2 = DEFAULT_INDENT2;
 323        if (*wrap &&
 324            ((*in1 && *wrap <= *in1) ||
 325             (*in2 && *wrap <= *in2)))
 326                die(wrap_arg_usage);
 327}
 328
 329int cmd_shortlog(int argc, const char **argv, const char *prefix)
 330{
 331        struct rev_info rev;
 332        struct path_list list = { NULL, 0, 0, 1 };
 333        int i, j, sort_by_number = 0, summary = 0;
 334        int wrap_lines = 0;
 335        int wrap = DEFAULT_WRAPLEN;
 336        int in1 = DEFAULT_INDENT1;
 337        int in2 = DEFAULT_INDENT2;
 338
 339        /* since -n is a shadowed rev argument, parse our args first */
 340        while (argc > 1) {
 341                if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 342                        sort_by_number = 1;
 343                else if (!strcmp(argv[1], "-s") ||
 344                                !strcmp(argv[1], "--summary"))
 345                        summary = 1;
 346                else if (!prefixcmp(argv[1], "-w")) {
 347                        wrap_lines = 1;
 348                        parse_wrap_args(argv[1], &in1, &in2, &wrap);
 349                }
 350                else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 351                        usage(shortlog_usage);
 352                else
 353                        break;
 354                argv++;
 355                argc--;
 356        }
 357        init_revisions(&rev, prefix);
 358        argc = setup_revisions(argc, argv, &rev, NULL);
 359        if (argc > 1)
 360                die ("unrecognized argument: %s", argv[1]);
 361
 362        if (!access(".mailmap", R_OK))
 363                read_mailmap(".mailmap");
 364
 365        if (rev.pending.nr == 0) {
 366                if (isatty(0))
 367                        fprintf(stderr, "(reading log to summarize from standard input)\n");
 368                read_from_stdin(&list);
 369        }
 370        else
 371                get_from_rev(&rev, &list);
 372
 373        if (sort_by_number)
 374                qsort(list.items, list.nr, sizeof(struct path_list_item),
 375                        compare_by_number);
 376
 377        for (i = 0; i < list.nr; i++) {
 378                struct path_list *onelines = list.items[i].util;
 379
 380                if (summary) {
 381                        printf("%s: %d\n", list.items[i].path, onelines->nr);
 382                } else {
 383                        printf("%s (%d):\n", list.items[i].path, onelines->nr);
 384                        for (j = onelines->nr - 1; j >= 0; j--) {
 385                                const char *msg = onelines->items[j].path;
 386
 387                                if (wrap_lines) {
 388                                        int col = print_wrapped_text(msg, in1, in2, wrap);
 389                                        if (col != wrap)
 390                                                putchar('\n');
 391                                }
 392                                else
 393                                        printf("      %s\n", msg);
 394                        }
 395                        putchar('\n');
 396                }
 397
 398                onelines->strdup_paths = 1;
 399                path_list_clear(onelines, 1);
 400                free(onelines);
 401                list.items[i].util = NULL;
 402        }
 403
 404        list.strdup_paths = 1;
 405        path_list_clear(&list, 1);
 406        mailmap.strdup_paths = 1;
 407        path_list_clear(&mailmap, 1);
 408
 409        return 0;
 410}
 411