gobject/gobject-query.c

   1 /* GObject - GLib Type, Object, Parameter and Signal Library
   2  * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General
  15  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <sys/stat.h>
  23 #include <fcntl.h>
  24
  25 #include <glib-object.h>
  26 #include <glib/gprintf.h>
  27
  28
  29 static gchar *indent_inc = NULL;
  30 static guint spacing = 1;
  31 static FILE *f_out = NULL;
  32 static GType root = 0;
  33 static gboolean recursion = TRUE;
  34
  35 #if 0
  36 #  define       O_SPACE "\\as"
  37 #  define       O_ESPACE " "
  38 #  define       O_BRANCH "\\aE"
  39 #  define       O_VLINE "\\al"
  40 #  define       O_LLEAF "\\aL"
  41 #  define       O_KEY_FILL "_"
  42 #else
  43 #  define       O_SPACE " "
  44 #  define       O_ESPACE ""
  45 #  define       O_BRANCH "+"
  46 #  define       O_VLINE "|"
  47 #  define       O_LLEAF "`"
  48 #  define       O_KEY_FILL "_"
  49 #endif
  50
  51 static void
  52 show_nodes (GType        type,
  53             GType        sibling,
  54             const gchar *indent)
  55 {
  56   GType   *children;
  57   guint i;
  58
  59   if (!type)
  60     return;
  61
  62   children = g_type_children (type, NULL);
  63
  64   if (type != root)
  65     for (i = 0; i < spacing; i++)
  66       g_fprintf (f_out, "%s%s\n", indent, O_VLINE);
  67
  68   g_fprintf (f_out, "%s%s%s%s",
  69            indent,
  70            sibling ? O_BRANCH : (type != root ? O_LLEAF : O_SPACE),
  71            O_ESPACE,
  72            g_type_name (type));
  73
  74   for (i = strlen (g_type_name (type)); i <= strlen (indent_inc); i++)
  75     fputs (O_KEY_FILL, f_out);
  76
  77   fputc ('\n', f_out);
  78
  79   if (children && recursion)
  80     {
  81       gchar *new_indent;
  82       GType   *child;
  83
  84       if (sibling)
  85         new_indent = g_strconcat (indent, O_VLINE, indent_inc, NULL);
  86       else
  87         new_indent = g_strconcat (indent, O_SPACE, indent_inc, NULL);
  88
  89       for (child = children; *child; child++)
  90         show_nodes (child[0], child[1], new_indent);
  91
  92       g_free (new_indent);
  93     }
  94
  95   g_free (children);
  96 }
  97
  98 static gint
  99 help (gchar *arg)
 100 {
 101   g_fprintf (stderr, "usage: gobject-query <qualifier> [-r <type>] [-{i|b} \"\"] [-s #] [-{h|x|y}]\n");
 102   g_fprintf (stderr, "       -r       specifiy root type\n");
 103   g_fprintf (stderr, "       -n       don't descend type tree\n");
 104   g_fprintf (stderr, "       -h       guess what ;)\n");
 105   g_fprintf (stderr, "       -b       specify indent string\n");
 106   g_fprintf (stderr, "       -i       specify incremental indent string\n");
 107   g_fprintf (stderr, "       -s       specify line spacing\n");
 108   g_fprintf (stderr, "qualifiers:\n");
 109   g_fprintf (stderr, "       froots   iterate over fundamental roots\n");
 110   g_fprintf (stderr, "       tree     print type tree\n");
 111
 112   return arg != NULL;
 113 }
 114
 115 int
 116 main (gint   argc,
 117       gchar *argv[])
 118 {
 119   GLogLevelFlags fatal_mask;
 120   gboolean gen_froots = 0;
 121   gboolean gen_tree = 0;
 122   gint i;
 123   const gchar *iindent = "";
 124
 125   f_out = stdout;
 126
 127   fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
 128   fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
 129   g_log_set_always_fatal (fatal_mask);
 130
 131   root = G_TYPE_OBJECT;
 132
 133   for (i = 1; i < argc; i++)
 134     {
 135       if (strcmp ("-s", argv[i]) == 0)
 136         {
 137           i++;
 138           if (i < argc)
 139             spacing = atoi (argv[i]);
 140         }
 141       else if (strcmp ("-i", argv[i]) == 0)
 142         {
 143           i++;
 144           if (i < argc)
 145             {
 146               char *p;
 147               guint n;
 148
 149               p = argv[i];
 150               while (*p)
 151                 p++;
 152               n = p - argv[i];
 153               indent_inc = g_new (gchar, n * strlen (O_SPACE) + 1);
 154               *indent_inc = 0;
 155               while (n)
 156                 {
 157                   n--;
 158                   strcpy (indent_inc, O_SPACE);
 159                 }
 160             }
 161         }
 162       else if (strcmp ("-b", argv[i]) == 0)
 163         {
 164           i++;
 165           if (i < argc)
 166             iindent = argv[i];
 167         }
 168       else if (strcmp ("-r", argv[i]) == 0)
 169         {
 170           i++;
 171           if (i < argc)
 172             root = g_type_from_name (argv[i]);
 173         }
 174       else if (strcmp ("-n", argv[i]) == 0)
 175         {
 176           recursion = FALSE;
 177         }
 178       else if (strcmp ("froots", argv[i]) == 0)
 179         {
 180           gen_froots = 1;
 181         }
 182       else if (strcmp ("tree", argv[i]) == 0)
 183         {
 184           gen_tree = 1;
 185         }
 186       else if (strcmp ("-h", argv[i]) == 0)
 187         {
 188           return help (NULL);
 189         }
 190       else if (strcmp ("--help", argv[i]) == 0)
 191         {
 192           return help (NULL);
 193         }
 194       else
 195         return help (argv[i]);
 196     }
 197
 198   if (!gen_froots && !gen_tree)
 199     return help (argv[i-1]);
 200
 201   if (!indent_inc)
 202     {
 203       indent_inc = g_new (gchar, strlen (O_SPACE) + 1);
 204       *indent_inc = 0;
 205       strcpy (indent_inc, O_SPACE);
 206     }
 207
 208   if (gen_tree)
 209     show_nodes (root, 0, iindent);
 210   if (gen_froots)
 211     {
 212       root = ~0;
 213       for (i = 0; i <= G_TYPE_FUNDAMENTAL_MAX; i += G_TYPE_MAKE_FUNDAMENTAL (1))
 214         {
 215           const gchar *name = g_type_name (i);
 216
 217           if (name)
 218             show_nodes (i, 0, iindent);
 219         }
 220     }
 221
 222   return 0;
 223 }