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         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 FILE *realstdout = NULL;
  89 static char *output_directory = NULL;
  90
  91 static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
  92 {
  93         char filename[1024];
  94         char *sol;
  95         int len = 0;
  96
  97         if (output_directory) {
  98                 strncpy(filename, output_directory, 1010);
  99                 len = strlen(filename);
 100                 if (filename[len - 1] != '/')
 101                         filename[len++] = '/';
 102         }
 103
 104         sprintf(filename + len, "%04d", nr);
 105         len = strlen(filename);
 106
 107         sol = strstr(commit->buffer, "\n\n");
 108         if (sol) {
 109                 int j, space = 1;
 110
 111                 sol += 2;
 112                 /* strip [PATCH] or [PATCH blabla] */
 113                 if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
 114                         char *eos = strchr(sol + 6, ']');
 115                         if (eos) {
 116                                 while (isspace(*eos))
 117                                         eos++;
 118                                 sol = eos;
 119                         }
 120                 }
 121
 122                 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 123                         if (istitlechar(sol[j])) {
 124                                 if (space) {
 125                                         filename[len++] = '-';
 126                                         space = 0;
 127                                 }
 128                                 filename[len++] = sol[j];
 129                                 if (sol[j] == '.')
 130                                         while (sol[j + 1] == '.')
 131                                                 j++;
 132                         } else
 133                                 space = 1;
 134                 }
 135                 while (filename[len - 1] == '.' || filename[len - 1] == '-')
 136                         len--;
 137         }
 138         strcpy(filename + len, ".txt");
 139         fprintf(realstdout, "%s\n", filename);
 140         freopen(filename, "w", stdout);
 141 }
 142
 143 int cmd_format_patch(int argc, const char **argv, char **envp)
 144 {
 145         struct commit *commit;
 146         struct commit **list = NULL;
 147         struct rev_info rev;
 148         int nr = 0, total, i, j;
 149         int use_stdout = 0;
 150         int numbered = 0;
 151         int start_number = -1;
 152         int keep_subject = 0;
 153
 154         init_revisions(&rev);
 155         rev.commit_format = CMIT_FMT_EMAIL;
 156         rev.verbose_header = 1;
 157         rev.diff = 1;
 158         rev.diffopt.with_raw = 0;
 159         rev.diffopt.with_stat = 1;
 160         rev.combine_merges = 0;
 161         rev.ignore_merges = 1;
 162         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 163
 164         /*
 165          * Parse the arguments before setup_revisions(), or something
 166          * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
 167          * possibly a valid SHA1.
 168          */
 169         for (i = 1, j = 1; i < argc; i++) {
 170                 if (!strcmp(argv[i], "--stdout"))
 171                         use_stdout = 1;
 172                 else if (!strcmp(argv[i], "-n") ||
 173                                 !strcmp(argv[i], "--numbered"))
 174                         numbered = 1;
 175                 else if (!strncmp(argv[i], "--start-number=", 15))
 176                         start_number = strtol(argv[i] + 15, NULL, 10);
 177                 else if (!strcmp(argv[i], "--start-number")) {
 178                         i++;
 179                         if (i == argc)
 180                                 die("Need a number for --start-number");
 181                         start_number = strtol(argv[i], NULL, 10);
 182                 } else if (!strcmp(argv[i], "-k") ||
 183                                 !strcmp(argv[i], "--keep-subject")) {
 184                         keep_subject = 1;
 185                         rev.total = -1;
 186                 } else if (!strcmp(argv[i], "-o")) {
 187                         if (argc < 3)
 188                                 die ("Which directory?");
 189                         if (mkdir(argv[i + 1], 0777) < 0 && errno != EEXIST)
 190                                 die("Could not create directory %s",
 191                                                 argv[i + 1]);
 192                         output_directory = strdup(argv[i + 1]);
 193                         i++;
 194                 }
 195                 else if (!strcmp(argv[i], "--attach"))
 196                         rev.mime_boundary = git_version_string;
 197                 else if (!strncmp(argv[i], "--attach=", 9))
 198                         rev.mime_boundary = argv[i] + 9;
 199                 else
 200                         argv[j++] = argv[i];
 201         }
 202         argc = j;
 203
 204         if (start_number < 0)
 205                 start_number = 1;
 206         if (numbered && keep_subject)
 207                 die ("-n and -k are mutually exclusive.");
 208
 209         argc = setup_revisions(argc, argv, &rev, "HEAD");
 210         if (argc > 1)
 211                 die ("unrecognized argument: %s", argv[1]);
 212
 213         if (rev.pending_objects && rev.pending_objects->next == NULL) {
 214                 rev.pending_objects->item->flags |= UNINTERESTING;
 215                 add_head(&rev);
 216         }
 217
 218         if (!use_stdout)
 219                 realstdout = fdopen(dup(1), "w");
 220
 221         prepare_revision_walk(&rev);
 222         while ((commit = get_revision(&rev)) != NULL) {
 223                 /* ignore merges */
 224                 if (commit->parents && commit->parents->next)
 225                         continue;
 226                 nr++;
 227                 list = realloc(list, nr * sizeof(list[0]));
 228                 list[nr - 1] = commit;
 229         }
 230         total = nr;
 231         if (numbered)
 232                 rev.total = total + start_number - 1;
 233         while (0 <= --nr) {
 234                 int shown;
 235                 commit = list[nr];
 236                 rev.nr = total - nr + (start_number - 1);
 237                 if (!use_stdout)
 238                         reopen_stdout(commit, rev.nr, keep_subject);
 239                 shown = log_tree_commit(&rev, commit);
 240                 free(commit->buffer);
 241                 commit->buffer = NULL;
 242
 243                 /* We put one extra blank line between formatted
 244                  * patches and this flag is used by log-tree code
 245                  * to see if it needs to emit a LF before showing
 246                  * the log; when using one file per patch, we do
 247                  * not want the extra blank line.
 248                  */
 249                 if (!use_stdout)
 250                         rev.shown_one = 0;
 251                 if (shown) {
 252                         if (rev.mime_boundary)
 253                                 printf("\n--%s%s--\n\n\n",
 254                                        mime_boundary_leader,
 255                                        rev.mime_boundary);
 256                         else
 257                                 printf("-- \n%s\n\n", git_version_string);
 258                 }
 259                 if (!use_stdout)
 260                         fclose(stdout);
 261         }
 262         if (output_directory)
 263                 free(output_directory);
 264         free(list);
 265         return 0;
 266 }
 267