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                 free_commit_list(commit->parents);
  44                 commit->parents = NULL;
  45         }
  46         return 0;
  47 }
  48
  49 int cmd_whatchanged(int argc, const char **argv, char **envp)
  50 {
  51         struct rev_info rev;
  52
  53         init_revisions(&rev);
  54         rev.diff = 1;
  55         rev.diffopt.recursive = 1;
  56         rev.simplify_history = 0;
  57         return cmd_log_wc(argc, argv, envp, &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         return cmd_log_wc(argc, argv, envp, &rev);
  73 }
  74
  75 int cmd_log(int argc, const char **argv, char **envp)
  76 {
  77         struct rev_info rev;
  78
  79         init_revisions(&rev);
  80         rev.always_show_header = 1;
  81         rev.diffopt.recursive = 1;
  82         return cmd_log_wc(argc, argv, envp, &rev);
  83 }
  84
  85 static int istitlechar(char c)
  86 {
  87         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
  88                 (c >= '0' && c <= '9') || c == '.' || c == '_';
  89 }
  90
  91 static char *extra_headers = NULL;
  92 static int extra_headers_size = 0;
  93
  94 static int git_format_config(const char *var, const char *value)
  95 {
  96         if (!strcmp(var, "format.headers")) {
  97                 int len = strlen(value);
  98                 extra_headers_size += len + 1;
  99                 extra_headers = realloc(extra_headers, extra_headers_size);
 100                 extra_headers[extra_headers_size - len - 1] = 0;
 101                 strcat(extra_headers, value);
 102                 return 0;
 103         }
 104         return git_default_config(var, value);
 105 }
 106
 107
 108 static FILE *realstdout = NULL;
 109 static const char *output_directory = NULL;
 110
 111 static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 112 {
 113         char filename[1024];
 114         char *sol;
 115         int len = 0;
 116
 117         if (output_directory) {
 118                 strlcpy(filename, output_directory, 1010);
 119                 len = strlen(filename);
 120                 if (filename[len - 1] != '/')
 121                         filename[len++] = '/';
 122         }
 123
 124         sprintf(filename + len, "%04d", nr);
 125         len = strlen(filename);
 126
 127         sol = strstr(commit->buffer, "\n\n");
 128         if (sol) {
 129                 int j, space = 1;
 130
 131                 sol += 2;
 132                 /* strip [PATCH] or [PATCH blabla] */
 133                 if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
 134                         char *eos = strchr(sol + 6, ']');
 135                         if (eos) {
 136                                 while (isspace(*eos))
 137                                         eos++;
 138                                 sol = eos;
 139                         }
 140                 }
 141
 142                 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 143                         if (istitlechar(sol[j])) {
 144                                 if (space) {
 145                                         filename[len++] = '-';
 146                                         space = 0;
 147                                 }
 148                                 filename[len++] = sol[j];
 149                                 if (sol[j] == '.')
 150                                         while (sol[j + 1] == '.')
 151                                                 j++;
 152                         } else
 153                                 space = 1;
 154                 }
 155                 while (filename[len - 1] == '.' || filename[len - 1] == '-')
 156                         len--;
 157         }
 158         strcpy(filename + len, ".txt");
 159         fprintf(realstdout, "%s\n", filename);
 160         freopen(filename, "w", stdout);
 161 }
 162
 163 int cmd_format_patch(int argc, const char **argv, char **envp)
 164 {
 165         struct commit *commit;
 166         struct commit **list = NULL;
 167         struct rev_info rev;
 168         int nr = 0, total, i, j;
 169         int use_stdout = 0;
 170         int numbered = 0;
 171         int start_number = -1;
 172         int keep_subject = 0;
 173         char *add_signoff = NULL;
 174
 175         init_revisions(&rev);
 176         rev.commit_format = CMIT_FMT_EMAIL;
 177         rev.verbose_header = 1;
 178         rev.diff = 1;
 179         rev.combine_merges = 0;
 180         rev.ignore_merges = 1;
 181         rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | 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;
 222                         const char *endpos;
 223                         setup_ident();
 224                         committer = git_committer_info(1);
 225                         endpos = strchr(committer, '>');
 226                         if (!endpos)
 227                                 die("bogos committer info %s\n", committer);
 228                         add_signoff = xmalloc(endpos - committer + 2);
 229                         memcpy(add_signoff, committer, endpos - committer + 1);
 230                         add_signoff[endpos - committer + 1] = 0;
 231                 }
 232                 else if (!strcmp(argv[i], "--attach"))
 233                         rev.mime_boundary = git_version_string;
 234                 else if (!strncmp(argv[i], "--attach=", 9))
 235                         rev.mime_boundary = argv[i] + 9;
 236                 else
 237                         argv[j++] = argv[i];
 238         }
 239         argc = j;
 240
 241         if (start_number < 0)
 242                 start_number = 1;
 243         if (numbered && keep_subject)
 244                 die ("-n and -k are mutually exclusive.");
 245
 246         argc = setup_revisions(argc, argv, &rev, "HEAD");
 247         if (argc > 1)
 248                 die ("unrecognized argument: %s", argv[1]);
 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