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 keep_subject = 0;
 152
 153         init_revisions(&rev);
 154         rev.commit_format = CMIT_FMT_EMAIL;
 155         rev.verbose_header = 1;
 156         rev.diff = 1;
 157         rev.diffopt.with_raw = 0;
 158         rev.diffopt.with_stat = 1;
 159         rev.combine_merges = 0;
 160         rev.ignore_merges = 1;
 161         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 162
 163         /*
 164          * Parse the arguments before setup_revisions(), or something
 165          * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
 166          * possibly a valid SHA1.
 167          */
 168         for (i = 1, j = 1; i < argc; i++) {
 169                 if (!strcmp(argv[i], "--stdout"))
 170                         use_stdout = 1;
 171                 else if (!strcmp(argv[i], "-n") ||
 172                                 !strcmp(argv[i], "--numbered"))
 173                         numbered = 1;
 174                 else if (!strcmp(argv[i], "-k") ||
 175                                 !strcmp(argv[i], "--keep-subject")) {
 176                         keep_subject = 1;
 177                         rev.total = -1;
 178                 } else if (!strcmp(argv[i], "-o")) {
 179                         if (argc < 3)
 180                                 die ("Which directory?");
 181                         if (mkdir(argv[i + 1], 0777) < 0 && errno != EEXIST)
 182                                 die("Could not create directory %s",
 183                                                 argv[i + 1]);
 184                         output_directory = strdup(argv[i + 1]);
 185                         i++;
 186                 }
 187                 else if (!strcmp(argv[i], "--attach"))
 188                         rev.mime_boundary = git_version_string;
 189                 else if (!strncmp(argv[i], "--attach=", 9))
 190                         rev.mime_boundary = argv[i] + 9;
 191                 else
 192                         argv[j++] = argv[i];
 193         }
 194         argc = j;
 195
 196         if (numbered && keep_subject < 0)
 197                 die ("-n and -k are mutually exclusive.");
 198
 199         argc = setup_revisions(argc, argv, &rev, "HEAD");
 200         if (argc > 1)
 201                 die ("unrecognized argument: %s", argv[1]);
 202
 203         if (rev.pending_objects && rev.pending_objects->next == NULL) {
 204                 rev.pending_objects->item->flags |= UNINTERESTING;
 205                 add_head(&rev);
 206         }
 207
 208         if (!use_stdout)
 209                 realstdout = fdopen(dup(1), "w");
 210
 211         prepare_revision_walk(&rev);
 212         while ((commit = get_revision(&rev)) != NULL) {
 213                 /* ignore merges */
 214                 if (commit->parents && commit->parents->next)
 215                         continue;
 216                 nr++;
 217                 list = realloc(list, nr * sizeof(list[0]));
 218                 list[nr - 1] = commit;
 219         }
 220         total = nr;
 221         if (numbered)
 222                 rev.total = total;
 223         while (0 <= --nr) {
 224                 int shown;
 225                 commit = list[nr];
 226                 rev.nr = total - nr;
 227                 if (!use_stdout)
 228                         reopen_stdout(commit, rev.nr, keep_subject);
 229                 shown = log_tree_commit(&rev, commit);
 230                 free(commit->buffer);
 231                 commit->buffer = NULL;
 232                 if (shown) {
 233                         if (rev.mime_boundary)
 234                                 printf("\n--%s%s--\n\n\n",
 235                                        mime_boundary_leader,
 236                                        rev.mime_boundary);
 237                         else
 238                                 printf("-- \n%s\n\n", git_version_string);
 239                 }
 240                 if (!use_stdout)
 241                         fclose(stdout);
 242         }
 243         if (output_directory)
 244                 free(output_directory);
 245         free(list);
 246         return 0;
 247 }
 248