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
  80 static void reopen_stdout(struct commit *commit, int nr)
  81 {
  82         char filename[1024];
  83         char *sol;
  84         int len;
  85
  86
  87         sprintf(filename, "%04d", nr);
  88         len = strlen(filename);
  89
  90         sol = strstr(commit->buffer, "\n\n");
  91         if (sol) {
  92                 int j, space = 1;
  93
  94                 sol += 2;
  95                 /* strip [PATCH] or [PATCH blabla] */
  96                 if (!strncmp(sol, "[PATCH", 6)) {
  97                         char *eos = strchr(sol + 6, ']');
  98                         if (eos) {
  99                                 while (isspace(*eos))
 100                                         eos++;
 101                                 sol = eos;
 102                         }
 103                 }
 104
 105                 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
 106                         if (istitlechar(sol[j])) {
 107                                 if (space) {
 108                                         filename[len++] = '-';
 109                                         space = 0;
 110                                 }
 111                                 filename[len++] = sol[j];
 112                                 if (sol[j] == '.')
 113                                         while (sol[j + 1] == '.')
 114                                                 j++;
 115                         } else
 116                                 space = 1;
 117                 }
 118                 while (filename[len - 1] == '.' || filename[len - 1] == '-')
 119                         len--;
 120         }
 121         strcpy(filename + len, ".txt");
 122         fprintf(realstdout, "%s\n", filename);
 123         freopen(filename, "w", stdout);
 124 }
 125
 126 int cmd_format_patch(int argc, const char **argv, char **envp)
 127 {
 128         struct commit *commit;
 129         struct commit **list = NULL;
 130         struct rev_info rev;
 131         int nr = 0, total;
 132         int use_stdout = 0;
 133
 134         init_revisions(&rev);
 135         rev.commit_format = CMIT_FMT_EMAIL;
 136         rev.verbose_header = 1;
 137         rev.diff = 1;
 138         rev.diffopt.with_raw = 0;
 139         rev.diffopt.with_stat = 1;
 140         rev.combine_merges = 0;
 141         rev.ignore_merges = 1;
 142         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 143         argc = setup_revisions(argc, argv, &rev, "HEAD");
 144
 145         while (argc > 1) {
 146                 if (!strcmp(argv[1], "--stdout"))
 147                         use_stdout = 1;
 148                 else
 149                         die ("unrecognized argument: %s", argv[1]);
 150                 argc--;
 151                 argv++;
 152         }
 153
 154         if (!use_stdout)
 155                 realstdout = fdopen(dup(1), "w");
 156
 157         prepare_revision_walk(&rev);
 158         while ((commit = get_revision(&rev)) != NULL) {
 159                 /* ignore merges */
 160                 if (commit->parents && commit->parents->next)
 161                         continue;
 162                 nr++;
 163                 list = realloc(list, nr * sizeof(list[0]));
 164                 list[nr - 1] = commit;
 165         }
 166         total = nr;
 167         while (0 <= --nr) {
 168                 int shown;
 169                 commit = list[nr];
 170                 if (!use_stdout)
 171                         reopen_stdout(commit, total - nr);
 172                 shown = log_tree_commit(&rev, commit);
 173                 free(commit->buffer);
 174                 commit->buffer = NULL;
 175                 if (shown)
 176                         printf("-- \n%s\n\n", git_version_string);
 177                 if (!use_stdout)
 178                         fclose(stdout);
 179         }
 180         free(list);
 181         return 0;
 182 }
 183