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         if (rev->always_show_header) {
  27                 if (rev->diffopt.pickaxe || rev->diffopt.filter)
  28                         rev->always_show_header = 0;
  29         }
  30
  31         if (argc > 1)
  32                 die("unrecognized argument: %s", argv[1]);
  33
  34         prepare_revision_walk(rev);
  35         setup_pager();
  36         while ((commit = get_revision(rev)) != NULL) {
  37                 log_tree_commit(rev, commit);
  38                 free(commit->buffer);
  39                 commit->buffer = NULL;
  40                 free_commit_list(commit->parents);
  41                 commit->parents = NULL;
  42         }
  43         return 0;
  44 }
  45
  46 int cmd_whatchanged(int argc, const char **argv, char **envp)
  47 {
  48         struct rev_info rev;
  49
  50         init_revisions(&rev);
  51         rev.diff = 1;
  52         rev.diffopt.recursive = 1;
  53         rev.simplify_history = 0;
  54         return cmd_log_wc(argc, argv, envp, &rev);
  55 }
  56
  57 int cmd_show(int argc, const char **argv, char **envp)
  58 {
  59         struct rev_info rev;
  60
  61         init_revisions(&rev);
  62         rev.diff = 1;
  63         rev.diffopt.recursive = 1;
  64         rev.combine_merges = 1;
  65         rev.dense_combined_merges = 1;
  66         rev.always_show_header = 1;
  67         rev.ignore_merges = 0;
  68         rev.no_walk = 1;
  69         return cmd_log_wc(argc, argv, envp, &rev);
  70 }
  71
  72 int cmd_log(int argc, const char **argv, char **envp)
  73 {
  74         struct rev_info rev;
  75
  76         init_revisions(&rev);
  77         rev.always_show_header = 1;
  78         rev.diffopt.recursive = 1;
  79         return cmd_log_wc(argc, argv, envp, &rev);
  80 }
  81
  82 static int istitlechar(char c)
  83 {
  84         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
  85                 (c >= '0' && c <= '9') || c == '.' || c == '_';
  86 }
  87
  88 static char *extra_headers = NULL;
  89 static int extra_headers_size = 0;
  90
  91 static int git_format_config(const char *var, const char *value)
  92 {
  93         if (!strcmp(var, "format.headers")) {
  94                 int len = strlen(value);
  95                 extra_headers_size += len + 1;
  96                 extra_headers = realloc(extra_headers, extra_headers_size);
  97                 extra_headers[extra_headers_size - len - 1] = 0;
  98                 strcat(extra_headers, value);
  99                 return 0;
 100         }
 101         return git_default_config(var, value);
 102 }
 103
 104
 105 static FILE *realstdout = NULL;
 106 static const char *output_directory = NULL;
 107
 108 static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 109 {
 110         char filename[1024];
 111         char *sol;
 112         int len = 0;
 113
 114         if (output_directory) {
 115                 strlcpy(filename, output_directory, 1010);
 116                 len = strlen(filename);
 117                 if (filename[len - 1] != '/')
 118                         filename[len++] = '/';
 119         }
 120
 121         sprintf(filename + len, "%04d", nr);
 122         len = strlen(filename);
 123
 124         sol = strstr(commit->buffer, "\n\n");
 125         if (sol) {
 126                 int j, space = 1;
 127
 128                 sol += 2;
 129                 /* strip [PATCH] or [PATCH blabla] */
 130                 if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
 131                         char *eos = strchr(sol + 6, ']');
 132                         if (eos) {
 133                                 while (isspace(*eos))
 134                                         eos++;
 135                                 sol = eos;
 136                         }
 137                 }
 138
 139                 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 140                         if (istitlechar(sol[j])) {
 141                                 if (space) {
 142                                         filename[len++] = '-';
 143                                         space = 0;
 144                                 }
 145                                 filename[len++] = sol[j];
 146                                 if (sol[j] == '.')
 147                                         while (sol[j + 1] == '.')
 148                                                 j++;
 149                         } else
 150                                 space = 1;
 151                 }
 152                 while (filename[len - 1] == '.' || filename[len - 1] == '-')
 153                         len--;
 154         }
 155         strcpy(filename + len, ".txt");
 156         fprintf(realstdout, "%s\n", filename);
 157         freopen(filename, "w", stdout);
 158 }
 159
 160 int cmd_format_patch(int argc, const char **argv, char **envp)
 161 {
 162         struct commit *commit;
 163         struct commit **list = NULL;
 164         struct rev_info rev;
 165         int nr = 0, total, i, j;
 166         int use_stdout = 0;
 167         int numbered = 0;
 168         int start_number = -1;
 169         int keep_subject = 0;
 170         char *add_signoff = NULL;
 171
 172         init_revisions(&rev);
 173         rev.commit_format = CMIT_FMT_EMAIL;
 174         rev.verbose_header = 1;
 175         rev.diff = 1;
 176         rev.combine_merges = 0;
 177         rev.ignore_merges = 1;
 178         rev.diffopt.msg_sep = "---\n";
 179
 180         git_config(git_format_config);
 181         rev.extra_headers = extra_headers;
 182
 183         /*
 184          * Parse the arguments before setup_revisions(), or something
 185          * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
 186          * possibly a valid SHA1.
 187          */
 188         for (i = 1, j = 1; i < argc; i++) {
 189                 if (!strcmp(argv[i], "--stdout"))
 190                         use_stdout = 1;
 191                 else if (!strcmp(argv[i], "-n") ||
 192                                 !strcmp(argv[i], "--numbered"))
 193                         numbered = 1;
 194                 else if (!strncmp(argv[i], "--start-number=", 15))
 195                         start_number = strtol(argv[i] + 15, NULL, 10);
 196                 else if (!strcmp(argv[i], "--start-number")) {
 197                         i++;
 198                         if (i == argc)
 199                                 die("Need a number for --start-number");
 200                         start_number = strtol(argv[i], NULL, 10);
 201                 }
 202                 else if (!strcmp(argv[i], "-k") ||
 203                                 !strcmp(argv[i], "--keep-subject")) {
 204                         keep_subject = 1;
 205                         rev.total = -1;
 206                 }
 207                 else if (!strcmp(argv[i], "--output-directory") ||
 208                          !strcmp(argv[i], "-o")) {
 209                         i++;
 210                         if (argc <= i)
 211                                 die("Which directory?");
 212                         if (output_directory)
 213                                 die("Two output directories?");
 214                         output_directory = argv[i];
 215                 }
 216                 else if (!strcmp(argv[i], "--signoff") ||
 217                          !strcmp(argv[i], "-s")) {
 218                         const char *committer;
 219                         const char *endpos;
 220                         setup_ident();
 221                         committer = git_committer_info(1);
 222                         endpos = strchr(committer, '>');
 223                         if (!endpos)
 224                                 die("bogos committer info %s\n", committer);
 225                         add_signoff = xmalloc(endpos - committer + 2);
 226                         memcpy(add_signoff, committer, endpos - committer + 1);
 227                         add_signoff[endpos - committer + 1] = 0;
 228                 }
 229                 else if (!strcmp(argv[i], "--attach"))
 230                         rev.mime_boundary = git_version_string;
 231                 else if (!strncmp(argv[i], "--attach=", 9))
 232                         rev.mime_boundary = argv[i] + 9;
 233                 else
 234                         argv[j++] = argv[i];
 235         }
 236         argc = j;
 237
 238         if (start_number < 0)
 239                 start_number = 1;
 240         if (numbered && keep_subject)
 241                 die ("-n and -k are mutually exclusive.");
 242
 243         argc = setup_revisions(argc, argv, &rev, "HEAD");
 244         if (argc > 1)
 245                 die ("unrecognized argument: %s", argv[1]);
 246
 247         if (!rev.diffopt.output_format)
 248                 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
 249
 250         if (output_directory) {
 251                 if (use_stdout)
 252                         die("standard output, or directory, which one?");
 253                 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
 254                         die("Could not create directory %s",
 255                             output_directory);
 256         }
 257
 258         if (rev.pending.nr == 1) {
 259                 rev.pending.objects[0].item->flags |= UNINTERESTING;
 260                 add_head(&rev);
 261         }
 262
 263         if (!use_stdout)
 264                 realstdout = fdopen(dup(1), "w");
 265
 266         prepare_revision_walk(&rev);
 267         while ((commit = get_revision(&rev)) != NULL) {
 268                 /* ignore merges */
 269                 if (commit->parents && commit->parents->next)
 270                         continue;
 271                 nr++;
 272                 list = realloc(list, nr * sizeof(list[0]));
 273                 list[nr - 1] = commit;
 274         }
 275         total = nr;
 276         if (numbered)
 277                 rev.total = total + start_number - 1;
 278         rev.add_signoff = add_signoff;
 279         while (0 <= --nr) {
 280                 int shown;
 281                 commit = list[nr];
 282                 rev.nr = total - nr + (start_number - 1);
 283                 if (!use_stdout)
 284                         reopen_stdout(commit, rev.nr, keep_subject);
 285                 shown = log_tree_commit(&rev, commit);
 286                 free(commit->buffer);
 287                 commit->buffer = NULL;
 288
 289                 /* We put one extra blank line between formatted
 290                  * patches and this flag is used by log-tree code
 291                  * to see if it needs to emit a LF before showing
 292                  * the log; when using one file per patch, we do
 293                  * not want the extra blank line.
 294                  */
 295                 if (!use_stdout)
 296                         rev.shown_one = 0;
 297                 if (shown) {
 298                         if (rev.mime_boundary)
 299                                 printf("\n--%s%s--\n\n\n",
 300                                        mime_boundary_leader,
 301                                        rev.mime_boundary);
 302                         else
 303                                 printf("-- \n%s\n\n", git_version_string);
 304                 }
 305                 if (!use_stdout)
 306                         fclose(stdout);
 307         }
 308         free(list);
 309         return 0;
 310 }
 311