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