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