builtin-log.c

   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 */
  15 void add_head(struct rev_info *revs);
  16
  17 static 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
  40 int 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
  50 int 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
  65 int 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
  75 static int istitlechar(char c)
  76 {
  77         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
  78                 (c >= '0' && c <= '9') || c == '.' || c == '_';
  79 }
  80
  81 static FILE *realstdout = NULL;
  82 static char *output_directory = NULL;
  83
  84 static 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
 136 int 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