test/tools/test-graph.c

   1 /* Copyright (c) 2006-2013 Jonas Fonseca <fonseca@diku.dk>
   2  *
   3  * This program is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU General Public License as
   5  * published by the Free Software Foundation; either version 2 of
   6  * the License, or (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include "tig/tig.h"
  15 #include "tig/util.h"
  16 #include "tig/io.h"
  17 #include "tig/graph.h"
  18
  19 #define USAGE \
  20 "test-graph [--ascii]\n" \
  21 "\n" \
  22 "Example usage:\n" \
  23 "       # git log --pretty=raw --parents | ./test-graph\n" \
  24 "       # git log --pretty=raw --parents | ./test-graph --ascii"
  25
  26 struct commit {
  27         char id[SIZEOF_REV];
  28         struct graph_canvas canvas;
  29 };
  30
  31 DEFINE_ALLOCATOR(realloc_commits, struct commit *, 8)
  32
  33 static const char *(*graph_fn)(const struct graph_symbol *) = graph_symbol_to_utf8;
  34
  35 static bool
  36 print_symbol(void *__, struct graph_symbol *symbol, int color_id, bool first)
  37 {
  38         const char *chars = graph_fn(symbol);
  39
  40         printf("%s", chars + !!first);
  41         return FALSE;
  42 }
  43
  44 static void
  45 print_commit(struct commit *commit, const char *title)
  46 {
  47         graph_foreach_symbol(&commit->canvas, print_symbol, NULL);
  48         printf(" %s\n", title);
  49 }
  50
  51 int
  52 main(int argc, const char *argv[])
  53 {
  54         struct graph *graph;
  55         struct io io = { };
  56         struct buffer buf;
  57         struct commit **commits = NULL;
  58         size_t ncommits = 0;
  59         struct commit *commit = NULL;
  60         bool is_boundary;
  61
  62         if (argc > 1 && !strcmp(argv[1], "--ascii"))
  63                 graph_fn = graph_symbol_to_ascii;
  64
  65         if (isatty(STDIN_FILENO)) {
  66                 die(USAGE);
  67         }
  68
  69         if (!(graph = init_graph()))
  70                 die("Failed to allocated graph");
  71         if (!io_open(&io, "%s", ""))
  72                 die("IO");
  73
  74         while (!io_eof(&io)) {
  75                 for (; io_get(&io, &buf, '\n', TRUE); ) {
  76                         char *line = buf.data;
  77
  78                         if (!prefixcmp(line, "commit ")) {
  79                                 line += STRING_SIZE("commit ");
  80                                 is_boundary = *line == '-';
  81
  82                                 if (is_boundary)
  83                                         line++;
  84
  85                                 if (!realloc_commits(&commits, ncommits, 1))
  86                                         die("Commits");
  87
  88                                 commit = calloc(1, sizeof(*commit));
  89                                 if (!commit)
  90                                         die("Commit");
  91                                 commits[ncommits++] = commit;
  92                                 string_copy_rev(commit->id, line);
  93                                 graph_add_commit(graph, &commit->canvas, commit->id, line, is_boundary);
  94                                 graph_render_parents(graph, &commit->canvas);
  95
  96                                 if ((line = io_memchr(&buf, line, 0))) {
  97                                         print_commit(commit, line);
  98                                         commit = NULL;
  99                                 }
 100
 101                         } else if (!prefixcmp(line, "    ")) {
 102
 103                                 if (!commit)
 104                                         continue;
 105
 106                                 print_commit(commit, line + 4);
 107
 108                                 commit = NULL;
 109                         }
 110                 }
 111         }
 112
 113         return 0;
 114 }
 115
 116 /* vim: set ts=8 sw=8 noexpandtab: */