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 static int cmd_log_wc(int argc, const char **argv, char **envp,
  15                       struct rev_info *rev)
  16 {
  17         struct commit *commit;
  18
  19         rev->abbrev = DEFAULT_ABBREV;
  20         rev->commit_format = CMIT_FMT_DEFAULT;
  21         rev->verbose_header = 1;
  22         argc = setup_revisions(argc, argv, rev, "HEAD");
  23
  24         if (argc > 1)
  25                 die("unrecognized argument: %s", argv[1]);
  26
  27         prepare_revision_walk(rev);
  28         setup_pager();
  29         while ((commit = get_revision(rev)) != NULL) {
  30                 log_tree_commit(rev, commit);
  31                 free(commit->buffer);
  32                 commit->buffer = NULL;
  33         }
  34         return 0;
  35 }
  36
  37 int cmd_whatchanged(int argc, const char **argv, char **envp)
  38 {
  39         struct rev_info rev;
  40
  41         init_revisions(&rev);
  42         rev.diff = 1;
  43         rev.diffopt.recursive = 1;
  44         return cmd_log_wc(argc, argv, envp, &rev);
  45 }
  46
  47 int cmd_show(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.combine_merges = 1;
  55         rev.dense_combined_merges = 1;
  56         rev.always_show_header = 1;
  57         rev.ignore_merges = 0;
  58         rev.no_walk = 1;
  59         return cmd_log_wc(argc, argv, envp, &rev);
  60 }
  61
  62 int cmd_log(int argc, const char **argv, char **envp)
  63 {
  64         struct rev_info rev;
  65
  66         init_revisions(&rev);
  67         rev.always_show_header = 1;
  68         rev.diffopt.recursive = 1;
  69         return cmd_log_wc(argc, argv, envp, &rev);
  70 }
  71
  72 static int istitlechar(char c)
  73 {
  74         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
  75                 (c >= '0' && c <= '9') || c == '.' || c == '_';
  76 }
  77
  78 static FILE *realstdout = NULL;
  79 static char *output_directory = NULL;
  80
  81 static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
  82 {
  83         char filename[1024];
  84         char *sol;
  85         int len = 0;
  86
  87         if (output_directory) {
  88                 strncpy(filename, output_directory, 1010);
  89                 len = strlen(filename);
  90                 if (filename[len - 1] != '/')
  91                         filename[len++] = '/';
  92         }
  93
  94         sprintf(filename + len, "%04d", nr);
  95         len = strlen(filename);
  96
  97         sol = strstr(commit->buffer, "\n\n");
  98         if (sol) {
  99                 int j, space = 1;
 100
 101                 sol += 2;
 102                 /* strip [PATCH] or [PATCH blabla] */
 103                 if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
 104                         char *eos = strchr(sol + 6, ']');
 105                         if (eos) {
 106                                 while (isspace(*eos))
 107                                         eos++;
 108                                 sol = eos;
 109                         }
 110                 }
 111
 112                 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 113                         if (istitlechar(sol[j])) {
 114                                 if (space) {
 115                                         filename[len++] = '-';
 116                                         space = 0;
 117                                 }
 118                                 filename[len++] = sol[j];
 119                                 if (sol[j] == '.')
 120                                         while (sol[j + 1] == '.')
 121                                                 j++;
 122                         } else
 123                                 space = 1;
 124                 }
 125                 while (filename[len - 1] == '.' || filename[len - 1] == '-')
 126                         len--;
 127         }
 128         strcpy(filename + len, ".txt");
 129         fprintf(realstdout, "%s\n", filename);
 130         freopen(filename, "w", stdout);
 131 }
 132
 133 int cmd_format_patch(int argc, const char **argv, char **envp)
 134 {
 135         struct commit *commit;
 136         struct commit **list = NULL;
 137         struct rev_info rev;
 138         int nr = 0, total, i, j;
 139         int use_stdout = 0;
 140         int numbered = 0;
 141         int keep_subject = 0;
 142
 143         init_revisions(&rev);
 144         rev.commit_format = CMIT_FMT_EMAIL;
 145         rev.verbose_header = 1;
 146         rev.diff = 1;
 147         rev.diffopt.with_raw = 0;
 148         rev.diffopt.with_stat = 1;
 149         rev.combine_merges = 0;
 150         rev.ignore_merges = 1;
 151         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 152
 153         /*
 154          * Parse the arguments before setup_revisions(), or something
 155          * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
 156          * possibly a valid SHA1.
 157          */
 158         for (i = 1, j = 1; i < argc; i++) {
 159                 if (!strcmp(argv[i], "--stdout"))
 160                         use_stdout = 1;
 161                 else if (!strcmp(argv[i], "-n") ||
 162                                 !strcmp(argv[i], "--numbered"))
 163                         numbered = 1;
 164                 else if (!strcmp(argv[i], "-k") ||
 165                                 !strcmp(argv[i], "--keep-subject")) {
 166                         keep_subject = 1;
 167                         rev.total = -1;
 168                 } else if (!strcmp(argv[i], "-o")) {
 169                         if (argc < 3)
 170                                 die ("Which directory?");
 171                         if (mkdir(argv[i + 1], 0777) < 0 && errno != EEXIST)
 172                                 die("Could not create directory %s",
 173                                                 argv[i + 1]);
 174                         output_directory = strdup(argv[i + 1]);
 175                         i++;
 176                 } else
 177                         argv[j++] = argv[i];
 178         }
 179         argc = j;
 180
 181         if (numbered && keep_subject < 0)
 182                 die ("-n and -k are mutually exclusive.");
 183
 184         argc = setup_revisions(argc, argv, &rev, "HEAD");
 185         if (argc > 1)
 186                 die ("unrecognized argument: %s", argv[1]);
 187
 188         if (!use_stdout)
 189                 realstdout = fdopen(dup(1), "w");
 190
 191         prepare_revision_walk(&rev);
 192         while ((commit = get_revision(&rev)) != NULL) {
 193                 /* ignore merges */
 194                 if (commit->parents && commit->parents->next)
 195                         continue;
 196                 nr++;
 197                 list = realloc(list, nr * sizeof(list[0]));
 198                 list[nr - 1] = commit;
 199         }
 200         total = nr;
 201         if (numbered)
 202                 rev.total = total;
 203         while (0 <= --nr) {
 204                 int shown;
 205                 commit = list[nr];
 206                 rev.nr = total - nr;
 207                 if (!use_stdout)
 208                         reopen_stdout(commit, rev.nr, keep_subject);
 209                 shown = log_tree_commit(&rev, commit);
 210                 free(commit->buffer);
 211                 commit->buffer = NULL;
 212                 if (shown)
 213                         printf("-- \n%s\n\n", git_version_string);
 214                 if (!use_stdout)
 215                         fclose(stdout);
 216         }
 217         if (output_directory)
 218                 free(output_directory);
 219         free(list);
 220         return 0;
 221 }
 222