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        /* Skip any leading whitespace, including any blank lines. */
  74        while (*oneline && isspace(*oneline))
  75                oneline++;
  76        eol = strchr(oneline, '\n');
  77        if (!eol)
  78                eol = oneline + strlen(oneline);
  79        if (!prefixcmp(oneline, "[PATCH")) {
  80                char *eob = strchr(oneline, ']');
  81                if (eob && (!eol || eob < eol))
  82                        oneline = eob + 1;
  83        }
  84        while (*oneline && isspace(*oneline) && *oneline != '\n')
  85                oneline++;
  86        len = eol - oneline;
  87        while (len && isspace(oneline[len-1]))
  88                len--;
  89        buffer = xmemdupz(oneline, len);
  90
  91        if (dot3) {
  92                int dot3len = strlen(dot3);
  93                if (dot3len > 5) {
  94                        while ((p = strstr(buffer, dot3)) != NULL) {
  95                                int taillen = strlen(p) - dot3len;
  96                                memcpy(p, "/.../", 5);
  97                                memmove(p + 5, p + dot3len, taillen + 1);
  98                        }
  99                }
 100        }
 101
 102        onelines = item->util;
 103        if (onelines->nr >= onelines->alloc) {
 104                onelines->alloc = alloc_nr(onelines->nr);
 105                onelines->items = xrealloc(onelines->items,
 106                                onelines->alloc
 107                                * sizeof(struct path_list_item));
 108        }
 109
 110        onelines->items[onelines->nr].util = NULL;
 111        onelines->items[onelines->nr++].path = buffer;
 112}
 113
 114static void read_from_stdin(struct shortlog *log)
 115{
 116        char author[1024], oneline[1024];
 117
 118        while (fgets(author, sizeof(author), stdin) != NULL) {
 119                if (!(author[0] == 'A' || author[0] == 'a') ||
 120                    prefixcmp(author + 1, "uthor: "))
 121                        continue;
 122                while (fgets(oneline, sizeof(oneline), stdin) &&
 123                       oneline[0] != '\n')
 124                        ; /* discard headers */
 125                while (fgets(oneline, sizeof(oneline), stdin) &&
 126                       oneline[0] == '\n')
 127                        ; /* discard blanks */
 128                insert_one_record(log, author + 8, oneline);
 129        }
 130}
 131
 132void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 133{
 134        const char *author = NULL, *buffer;
 135
 136        buffer = commit->buffer;
 137        while (*buffer && *buffer != '\n') {
 138                const char *eol = strchr(buffer, '\n');
 139
 140                if (eol == NULL)
 141                        eol = buffer + strlen(buffer);
 142                else
 143                        eol++;
 144
 145                if (!prefixcmp(buffer, "author "))
 146                        author = buffer + 7;
 147                buffer = eol;
 148        }
 149        if (!author)
 150                die("Missing author: %s",
 151                    sha1_to_hex(commit->object.sha1));
 152        if (*buffer)
 153                buffer++;
 154        insert_one_record(log, author, !*buffer ? "<none>" : buffer);
 155}
 156
 157static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 158{
 159        struct commit *commit;
 160
 161        if (prepare_revision_walk(rev))
 162                die("revision walk setup failed");
 163        while ((commit = get_revision(rev)) != NULL)
 164                shortlog_add_commit(log, commit);
 165}
 166
 167static int parse_uint(char const **arg, int comma)
 168{
 169        unsigned long ul;
 170        int ret;
 171        char *endp;
 172
 173        ul = strtoul(*arg, &endp, 10);
 174        if (endp != *arg && *endp && *endp != comma)
 175                return -1;
 176        ret = (int) ul;
 177        if (ret != ul)
 178                return -1;
 179        *arg = endp;
 180        if (**arg)
 181                (*arg)++;
 182        return ret;
 183}
 184
 185static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 186#define DEFAULT_WRAPLEN 76
 187#define DEFAULT_INDENT1 6
 188#define DEFAULT_INDENT2 9
 189
 190static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
 191{
 192        arg += 2; /* skip -w */
 193
 194        *wrap = parse_uint(&arg, ',');
 195        if (*wrap < 0)
 196                die(wrap_arg_usage);
 197        *in1 = parse_uint(&arg, ',');
 198        if (*in1 < 0)
 199                die(wrap_arg_usage);
 200        *in2 = parse_uint(&arg, '\0');
 201        if (*in2 < 0)
 202                die(wrap_arg_usage);
 203
 204        if (!*wrap)
 205                *wrap = DEFAULT_WRAPLEN;
 206        if (!*in1)
 207                *in1 = DEFAULT_INDENT1;
 208        if (!*in2)
 209                *in2 = DEFAULT_INDENT2;
 210        if (*wrap &&
 211            ((*in1 && *wrap <= *in1) ||
 212             (*in2 && *wrap <= *in2)))
 213                die(wrap_arg_usage);
 214}
 215
 216void shortlog_init(struct shortlog *log)
 217{
 218        memset(log, 0, sizeof(*log));
 219
 220        read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
 221
 222        log->list.strdup_paths = 1;
 223        log->wrap = DEFAULT_WRAPLEN;
 224        log->in1 = DEFAULT_INDENT1;
 225        log->in2 = DEFAULT_INDENT2;
 226}
 227
 228int cmd_shortlog(int argc, const char **argv, const char *prefix)
 229{
 230        struct shortlog log;
 231        struct rev_info rev;
 232        int nongit;
 233
 234        prefix = setup_git_directory_gently(&nongit);
 235        shortlog_init(&log);
 236
 237        /* since -n is a shadowed rev argument, parse our args first */
 238        while (argc > 1) {
 239                if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
 240                        log.sort_by_number = 1;
 241                else if (!strcmp(argv[1], "-s") ||
 242                                !strcmp(argv[1], "--summary"))
 243                        log.summary = 1;
 244                else if (!strcmp(argv[1], "-e") ||
 245                         !strcmp(argv[1], "--email"))
 246                        log.email = 1;
 247                else if (!prefixcmp(argv[1], "-w")) {
 248                        log.wrap_lines = 1;
 249                        parse_wrap_args(argv[1], &log.in1, &log.in2, &log.wrap);
 250                }
 251                else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
 252                        usage(shortlog_usage);
 253                else
 254                        break;
 255                argv++;
 256                argc--;
 257        }
 258        init_revisions(&rev, prefix);
 259        argc = setup_revisions(argc, argv, &rev, NULL);
 260        if (argc > 1)
 261                die ("unrecognized argument: %s", argv[1]);
 262
 263        /* assume HEAD if from a tty */
 264        if (!nongit && !rev.pending.nr && isatty(0))
 265                add_head_to_pending(&rev);
 266        if (rev.pending.nr == 0) {
 267                read_from_stdin(&log);
 268        }
 269        else
 270                get_from_rev(&rev, &log);
 271
 272        shortlog_output(&log);
 273        return 0;
 274}
 275
 276void shortlog_output(struct shortlog *log)
 277{
 278        int i, j;
 279        if (log->sort_by_number)
 280                qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
 281                        compare_by_number);
 282        for (i = 0; i < log->list.nr; i++) {
 283                struct path_list *onelines = log->list.items[i].util;
 284
 285                if (log->summary) {
 286                        printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
 287                } else {
 288                        printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
 289                        for (j = onelines->nr - 1; j >= 0; j--) {
 290                                const char *msg = onelines->items[j].path;
 291
 292                                if (log->wrap_lines) {
 293                                        int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
 294                                        if (col != log->wrap)
 295                                                putchar('\n');
 296                                }
 297                                else
 298                                        printf("      %s\n", msg);
 299                        }
 300                        putchar('\n');
 301                }
 302
 303                onelines->strdup_paths = 1;
 304                path_list_clear(onelines, 1);
 305                free(onelines);
 306                log->list.items[i].util = NULL;
 307        }
 308
 309        log->list.strdup_paths = 1;
 310        path_list_clear(&log->list, 1);
 311        log->mailmap.strdup_paths = 1;
 312        path_list_clear(&log->mailmap, 1);
 313}