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 void cmd_log_init(int argc, const char **argv, char **envp,
  18                       struct rev_info *rev)
  19 {
  20         rev->abbrev = DEFAULT_ABBREV;
  21         rev->commit_format = CMIT_FMT_DEFAULT;
  22         rev->verbose_header = 1;
  23         argc = setup_revisions(argc, argv, rev, "HEAD");
  24         if (rev->diffopt.pickaxe || rev->diffopt.filter)
  25                 rev->always_show_header = 0;
  26         if (argc > 1)
  27                 die("unrecognized argument: %s", argv[1]);
  28 }
  29
  30 static int cmd_log_walk(struct rev_info *rev)
  31 {
  32         struct commit *commit;
  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         cmd_log_init(argc, argv, envp, &rev);
  55         if (!rev.diffopt.output_format)
  56                 rev.diffopt.output_format = DIFF_FORMAT_RAW;
  57         return cmd_log_walk(&rev);
  58 }
  59
  60 int cmd_show(int argc, const char **argv, char **envp)
  61 {
  62         struct rev_info rev;
  63
  64         init_revisions(&rev);
  65         rev.diff = 1;
  66         rev.diffopt.recursive = 1;
  67         rev.combine_merges = 1;
  68         rev.dense_combined_merges = 1;
  69         rev.always_show_header = 1;
  70         rev.ignore_merges = 0;
  71         rev.no_walk = 1;
  72         cmd_log_init(argc, argv, envp, &rev);
  73         return cmd_log_walk(&rev);
  74 }
  75
  76 int cmd_log(int argc, const char **argv, char **envp)
  77 {
  78         struct rev_info rev;
  79
  80         init_revisions(&rev);
  81         rev.always_show_header = 1;
  82         cmd_log_init(argc, argv, envp, &rev);
  83         return cmd_log_walk(&rev);
  84 }
  85
  86 static int istitlechar(char c)
  87 {
  88         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
  89                 (c >= '0' && c <= '9') || c == '.' || c == '_';
  90 }
  91
  92 static char *extra_headers = NULL;
  93 static int extra_headers_size = 0;
  94
  95 static int git_format_config(const char *var, const char *value)
  96 {
  97         if (!strcmp(var, "format.headers")) {
  98                 int len = strlen(value);
  99                 extra_headers_size += len + 1;
 100                 extra_headers = realloc(extra_headers, extra_headers_size);
 101                 extra_headers[extra_headers_size - len - 1] = 0;
 102                 strcat(extra_headers, value);
 103                 return 0;
 104         }
 105         return git_default_config(var, value);
 106 }
 107
 108
 109 static FILE *realstdout = NULL;
 110 static const char *output_directory = NULL;
 111
 112 static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 113 {
 114         char filename[1024];
 115         char *sol;
 116         int len = 0;
 117
 118         if (output_directory) {
 119                 strlcpy(filename, output_directory, 1010);
 120                 len = strlen(filename);
 121                 if (filename[len - 1] != '/')
 122                         filename[len++] = '/';
 123         }
 124
 125         sprintf(filename + len, "%04d", nr);
 126         len = strlen(filename);
 127
 128         sol = strstr(commit->buffer, "\n\n");
 129         if (sol) {
 130                 int j, space = 1;
 131
 132                 sol += 2;
 133                 /* strip [PATCH] or [PATCH blabla] */
 134                 if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
 135                         char *eos = strchr(sol + 6, ']');
 136                         if (eos) {
 137                                 while (isspace(*eos))
 138                                         eos++;
 139                                 sol = eos;
 140                         }
 141                 }
 142
 143                 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 144                         if (istitlechar(sol[j])) {
 145                                 if (space) {
 146                                         filename[len++] = '-';
 147                                         space = 0;
 148                                 }
 149                                 filename[len++] = sol[j];
 150                                 if (sol[j] == '.')
 151                                         while (sol[j + 1] == '.')
 152                                                 j++;
 153                         } else
 154                                 space = 1;
 155                 }
 156                 while (filename[len - 1] == '.' || filename[len - 1] == '-')
 157                         len--;
 158         }
 159         strcpy(filename + len, ".txt");
 160         fprintf(realstdout, "%s\n", filename);
 161         freopen(filename, "w", stdout);
 162 }
 163
 164 int cmd_format_patch(int argc, const char **argv, char **envp)
 165 {
 166         struct commit *commit;
 167         struct commit **list = NULL;
 168         struct rev_info rev;
 169         int nr = 0, total, i, j;
 170         int use_stdout = 0;
 171         int numbered = 0;
 172         int start_number = -1;
 173         int keep_subject = 0;
 174         char *add_signoff = NULL;
 175
 176         init_revisions(&rev);
 177         rev.commit_format = CMIT_FMT_EMAIL;
 178         rev.verbose_header = 1;
 179         rev.diff = 1;
 180         rev.combine_merges = 0;
 181         rev.ignore_merges = 1;
 182         rev.diffopt.msg_sep = "---\n";
 183
 184         git_config(git_format_config);
 185         rev.extra_headers = extra_headers;
 186
 187         /*
 188          * Parse the arguments before setup_revisions(), or something
 189          * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
 190          * possibly a valid SHA1.
 191          */
 192         for (i = 1, j = 1; i < argc; i++) {
 193                 if (!strcmp(argv[i], "--stdout"))
 194                         use_stdout = 1;
 195                 else if (!strcmp(argv[i], "-n") ||
 196                                 !strcmp(argv[i], "--numbered"))
 197                         numbered = 1;
 198                 else if (!strncmp(argv[i], "--start-number=", 15))
 199                         start_number = strtol(argv[i] + 15, NULL, 10);
 200                 else if (!strcmp(argv[i], "--start-number")) {
 201                         i++;
 202                         if (i == argc)
 203                                 die("Need a number for --start-number");
 204                         start_number = strtol(argv[i], NULL, 10);
 205                 }
 206                 else if (!strcmp(argv[i], "-k") ||
 207                                 !strcmp(argv[i], "--keep-subject")) {
 208                         keep_subject = 1;
 209                         rev.total = -1;
 210                 }
 211                 else if (!strcmp(argv[i], "--output-directory") ||
 212                          !strcmp(argv[i], "-o")) {
 213                         i++;
 214                         if (argc <= i)
 215                                 die("Which directory?");
 216                         if (output_directory)
 217                                 die("Two output directories?");
 218                         output_directory = argv[i];
 219                 }
 220                 else if (!strcmp(argv[i], "--signoff") ||
 221                          !strcmp(argv[i], "-s")) {
 222                         const char *committer;
 223                         const char *endpos;
 224                         setup_ident();
 225                         committer = git_committer_info(1);
 226                         endpos = strchr(committer, '>');
 227                         if (!endpos)
 228                                 die("bogos committer info %s\n", committer);
 229                         add_signoff = xmalloc(endpos - committer + 2);
 230                         memcpy(add_signoff, committer, endpos - committer + 1);
 231                         add_signoff[endpos - committer + 1] = 0;
 232                 }
 233                 else if (!strcmp(argv[i], "--attach"))
 234                         rev.mime_boundary = git_version_string;
 235                 else if (!strncmp(argv[i], "--attach=", 9))
 236                         rev.mime_boundary = argv[i] + 9;
 237                 else
 238                         argv[j++] = argv[i];
 239         }
 240         argc = j;
 241
 242         if (start_number < 0)
 243                 start_number = 1;
 244         if (numbered && keep_subject)
 245                 die ("-n and -k are mutually exclusive.");
 246
 247         argc = setup_revisions(argc, argv, &rev, "HEAD");
 248         if (argc > 1)
 249                 die ("unrecognized argument: %s", argv[1]);
 250
 251         if (!rev.diffopt.output_format)
 252                 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
 253
 254         if (output_directory) {
 255                 if (use_stdout)
 256                         die("standard output, or directory, which one?");
 257                 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
 258                         die("Could not create directory %s",
 259                             output_directory);
 260         }
 261
 262         if (rev.pending.nr == 1) {
 263                 rev.pending.objects[0].item->flags |= UNINTERESTING;
 264                 add_head(&rev);
 265         }
 266
 267         if (!use_stdout)
 268                 realstdout = fdopen(dup(1), "w");
 269
 270         prepare_revision_walk(&rev);
 271         while ((commit = get_revision(&rev)) != NULL) {
 272                 /* ignore merges */
 273                 if (commit->parents && commit->parents->next)
 274                         continue;
 275                 nr++;
 276                 list = realloc(list, nr * sizeof(list[0]));
 277                 list[nr - 1] = commit;
 278         }
 279         total = nr;
 280         if (numbered)
 281                 rev.total = total + start_number - 1;
 282         rev.add_signoff = add_signoff;
 283         while (0 <= --nr) {
 284                 int shown;
 285                 commit = list[nr];
 286                 rev.nr = total - nr + (start_number - 1);
 287                 if (!use_stdout)
 288                         reopen_stdout(commit, rev.nr, keep_subject);
 289                 shown = log_tree_commit(&rev, commit);
 290                 free(commit->buffer);
 291                 commit->buffer = NULL;
 292
 293                 /* We put one extra blank line between formatted
 294                  * patches and this flag is used by log-tree code
 295                  * to see if it needs to emit a LF before showing
 296                  * the log; when using one file per patch, we do
 297                  * not want the extra blank line.
 298                  */
 299                 if (!use_stdout)
 300                         rev.shown_one = 0;
 301                 if (shown) {
 302                         if (rev.mime_boundary)
 303                                 printf("\n--%s%s--\n\n\n",
 304                                        mime_boundary_leader,
 305                                        rev.mime_boundary);
 306                         else
 307                                 printf("-- \n%s\n\n", git_version_string);
 308                 }
 309                 if (!use_stdout)
 310                         fclose(stdout);
 311         }
 312         free(list);
 313         return 0;
 314 }
 315