builtin-log.con commit Merge branch 'jc/grep' into next (a5954ec)
   1/*
   2 * Builtin "git log" and related commands (show, whatchanged)
   3 *
   4 * (C) Copyright 2006 Linus Torvalds
   5 *               2006 Junio Hamano
   6 */
   7#include "cache.h"
   8#include "commit.h"
   9#include "diff.h"
  10#include "revision.h"
  11#include "log-tree.h"
  12#include "builtin.h"
  13
  14/* this is in builtin-diff.c */
  15void add_head(struct rev_info *revs);
  16
  17static int cmd_log_wc(int argc, const char **argv, char **envp,
  18                      struct rev_info *rev)
  19{
  20        struct commit *commit;
  21
  22        rev->abbrev = DEFAULT_ABBREV;
  23        rev->commit_format = CMIT_FMT_DEFAULT;
  24        rev->verbose_header = 1;
  25        argc = setup_revisions(argc, argv, rev, "HEAD");
  26
  27        if (argc > 1)
  28                die("unrecognized argument: %s", argv[1]);
  29
  30        prepare_revision_walk(rev);
  31        setup_pager();
  32        while ((commit = get_revision(rev)) != NULL) {
  33                log_tree_commit(rev, commit);
  34                free(commit->buffer);
  35                commit->buffer = NULL;
  36        }
  37        return 0;
  38}
  39
  40int cmd_whatchanged(int argc, const char **argv, char **envp)
  41{
  42        struct rev_info rev;
  43
  44        init_revisions(&rev);
  45        rev.diff = 1;
  46        rev.diffopt.recursive = 1;
  47        return cmd_log_wc(argc, argv, envp, &rev);
  48}
  49
  50int cmd_show(int argc, const char **argv, char **envp)
  51{
  52        struct rev_info rev;
  53
  54        init_revisions(&rev);
  55        rev.diff = 1;
  56        rev.diffopt.recursive = 1;
  57        rev.combine_merges = 1;
  58        rev.dense_combined_merges = 1;
  59        rev.always_show_header = 1;
  60        rev.ignore_merges = 0;
  61        rev.no_walk = 1;
  62        return cmd_log_wc(argc, argv, envp, &rev);
  63}
  64
  65int cmd_log(int argc, const char **argv, char **envp)
  66{
  67        struct rev_info rev;
  68
  69        init_revisions(&rev);
  70        rev.always_show_header = 1;
  71        rev.diffopt.recursive = 1;
  72        return cmd_log_wc(argc, argv, envp, &rev);
  73}
  74
  75static int istitlechar(char c)
  76{
  77        return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
  78                (c >= '0' && c <= '9') || c == '.' || c == '_';
  79}
  80
  81static FILE *realstdout = NULL;
  82static char *output_directory = NULL;
  83
  84static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
  85{
  86        char filename[1024];
  87        char *sol;
  88        int len = 0;
  89
  90        if (output_directory) {
  91                strncpy(filename, output_directory, 1010);
  92                len = strlen(filename);
  93                if (filename[len - 1] != '/')
  94                        filename[len++] = '/';
  95        }
  96
  97        sprintf(filename + len, "%04d", nr);
  98        len = strlen(filename);
  99
 100        sol = strstr(commit->buffer, "\n\n");
 101        if (sol) {
 102                int j, space = 1;
 103
 104                sol += 2;
 105                /* strip [PATCH] or [PATCH blabla] */
 106                if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
 107                        char *eos = strchr(sol + 6, ']');
 108                        if (eos) {
 109                                while (isspace(*eos))
 110                                        eos++;
 111                                sol = eos;
 112                        }
 113                }
 114
 115                for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 116                        if (istitlechar(sol[j])) {
 117                                if (space) {
 118                                        filename[len++] = '-';
 119                                        space = 0;
 120                                }
 121                                filename[len++] = sol[j];
 122                                if (sol[j] == '.')
 123                                        while (sol[j + 1] == '.')
 124                                                j++;
 125                        } else
 126                                space = 1;
 127                }
 128                while (filename[len - 1] == '.' || filename[len - 1] == '-')
 129                        len--;
 130        }
 131        strcpy(filename + len, ".txt");
 132        fprintf(realstdout, "%s\n", filename);
 133        freopen(filename, "w", stdout);
 134}
 135
 136int cmd_format_patch(int argc, const char **argv, char **envp)
 137{
 138        struct commit *commit;
 139        struct commit **list = NULL;
 140        struct rev_info rev;
 141        int nr = 0, total, i, j;
 142        int use_stdout = 0;
 143        int numbered = 0;
 144        int keep_subject = 0;
 145
 146        init_revisions(&rev);
 147        rev.commit_format = CMIT_FMT_EMAIL;
 148        rev.verbose_header = 1;
 149        rev.diff = 1;
 150        rev.diffopt.with_raw = 0;
 151        rev.diffopt.with_stat = 1;
 152        rev.combine_merges = 0;
 153        rev.ignore_merges = 1;
 154        rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 155
 156        /*
 157         * Parse the arguments before setup_revisions(), or something
 158         * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
 159         * possibly a valid SHA1.
 160         */
 161        for (i = 1, j = 1; i < argc; i++) {
 162                if (!strcmp(argv[i], "--stdout"))
 163                        use_stdout = 1;
 164                else if (!strcmp(argv[i], "-n") ||
 165                                !strcmp(argv[i], "--numbered"))
 166                        numbered = 1;
 167                else if (!strcmp(argv[i], "-k") ||
 168                                !strcmp(argv[i], "--keep-subject")) {
 169                        keep_subject = 1;
 170                        rev.total = -1;
 171                } else if (!strcmp(argv[i], "-o")) {
 172                        if (argc < 3)
 173                                die ("Which directory?");
 174                        if (mkdir(argv[i + 1], 0777) < 0 && errno != EEXIST)
 175                                die("Could not create directory %s",
 176                                                argv[i + 1]);
 177                        output_directory = strdup(argv[i + 1]);
 178                        i++;
 179                } else
 180                        argv[j++] = argv[i];
 181        }
 182        argc = j;
 183
 184        if (numbered && keep_subject < 0)
 185                die ("-n and -k are mutually exclusive.");
 186
 187        argc = setup_revisions(argc, argv, &rev, "HEAD");
 188        if (argc > 1)
 189                die ("unrecognized argument: %s", argv[1]);
 190
 191        if (rev.pending_objects && rev.pending_objects->next == NULL) {
 192                rev.pending_objects->item->flags |= UNINTERESTING;
 193                add_head(&rev);
 194        }
 195
 196        if (!use_stdout)
 197                realstdout = fdopen(dup(1), "w");
 198
 199        prepare_revision_walk(&rev);
 200        while ((commit = get_revision(&rev)) != NULL) {
 201                /* ignore merges */
 202                if (commit->parents && commit->parents->next)
 203                        continue;
 204                nr++;
 205                list = realloc(list, nr * sizeof(list[0]));
 206                list[nr - 1] = commit;
 207        }
 208        total = nr;
 209        if (numbered)
 210                rev.total = total;
 211        while (0 <= --nr) {
 212                int shown;
 213                commit = list[nr];
 214                rev.nr = total - nr;
 215                if (!use_stdout)
 216                        reopen_stdout(commit, rev.nr, keep_subject);
 217                shown = log_tree_commit(&rev, commit);
 218                free(commit->buffer);
 219                commit->buffer = NULL;
 220                if (shown)
 221                        printf("-- \n%s\n\n", git_version_string);
 222                if (!use_stdout)
 223                        fclose(stdout);
 224        }
 225        if (output_directory)
 226                free(output_directory);
 227        free(list);
 228        return 0;
 229}
 230