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, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #ifdef HAVE_UNISTD_H
  25 #include <unistd.h>
  26 #endif
  27 #include <sys/stat.h>
  28 #include <fcntl.h>
  29
  30 #include <glib-object.h>
  31 #include <glib/gprintf.h>
  32
  33
  34 static gchar *indent_inc = NULL;
  35 static guint spacing = 1;
  36 static FILE *f_out = NULL;
  37 static GType root = 0;
  38 static gboolean recursion = TRUE;
  39
  40 #if 0
  41 #  define       O_SPACE "\\as"
  42 #  define       O_ESPACE " "
  43 #  define       O_BRANCH "\\aE"
  44 #  define       O_VLINE "\\al"
  45 #  define       O_LLEAF "\\aL"
  46 #  define       O_KEY_FILL "_"
  47 #else
  48 #  define       O_SPACE " "
  49 #  define       O_ESPACE ""
  50 #  define       O_BRANCH "+"
  51 #  define       O_VLINE "|"
  52 #  define       O_LLEAF "`"
  53 #  define       O_KEY_FILL "_"
  54 #endif
  55
  56 static void
  57 show_nodes (GType        type,
  58             GType        sibling,
  59             const gchar *indent)
  60 {
  61   GType   *children;
  62   guint i;
  63
  64   if (!type)
  65     return;
  66
  67   children = g_type_children (type, NULL);
  68
  69   if (type != root)
  70     for (i = 0; i < spacing; i++)
  71       g_fprintf (f_out, "%s%s\n", indent, O_VLINE);
  72
  73   g_fprintf (f_out, "%s%s%s%s",
  74            indent,
  75            sibling ? O_BRANCH : (type != root ? O_LLEAF : O_SPACE),
  76            O_ESPACE,
  77            g_type_name (type));
  78
  79   for (i = strlen (g_type_name (type)); i <= strlen (indent_inc); i++)
  80     fputs (O_KEY_FILL, f_out);
  81
  82   fputc ('\n', f_out);
  83
  84   if (children && recursion)
  85     {
  86       gchar *new_indent;
  87       GType   *child;
  88
  89       if (sibling)
  90         new_indent = g_strconcat (indent, O_VLINE, indent_inc, NULL);
  91       else
  92         new_indent = g_strconcat (indent, O_SPACE, indent_inc, NULL);
  93
  94       for (child = children; *child; child++)
  95         show_nodes (child[0], child[1], new_indent);
  96
  97       g_free (new_indent);
  98     }
  99
 100   g_free (children);
 101 }
 102
 103 static gint
 104 help (gchar *arg)
 105 {
 106   g_fprintf (stderr, "usage: gobject-query <qualifier> [-r <type>] [-{i|b} \"\"] [-s #] [-{h|x|y}]\n");
 107   g_fprintf (stderr, "       -r       specifiy root type\n");
 108   g_fprintf (stderr, "       -n       don't descend type tree\n");
 109   g_fprintf (stderr, "       -h       guess what ;)\n");
 110   g_fprintf (stderr, "       -b       specify indent string\n");
 111   g_fprintf (stderr, "       -i       specify incremental indent string\n");
 112   g_fprintf (stderr, "       -s       specify line spacing\n");
 113   g_fprintf (stderr, "qualifiers:\n");
 114   g_fprintf (stderr, "       froots   iterate over fundamental roots\n");
 115   g_fprintf (stderr, "       tree     print type tree\n");
 116
 117   return arg != NULL;
 118 }
 119
 120 int
 121 main (gint   argc,
 122       gchar *argv[])
 123 {
 124   GLogLevelFlags fatal_mask;
 125   gboolean gen_froots = 0;
 126   gboolean gen_tree = 0;
 127   gint i;
 128   gchar *iindent = "";
 129
 130   f_out = stdout;
 131
 132   fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
 133   fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
 134   g_log_set_always_fatal (fatal_mask);
 135
 136   root = G_TYPE_OBJECT;
 137
 138   g_type_init ();
 139
 140   for (i = 1; i < argc; i++)
 141     {
 142       if (strcmp ("-s", argv[i]) == 0)
 143         {
 144           i++;
 145           if (i < argc)
 146             spacing = atoi (argv[i]);
 147         }
 148       else if (strcmp ("-i", argv[i]) == 0)
 149         {
 150           i++;
 151           if (i < argc)
 152             {
 153               char *p;
 154               guint n;
 155
 156               p = argv[i];
 157               while (*p)
 158                 p++;
 159               n = p - argv[i];
 160               indent_inc = g_new (gchar, n * strlen (O_SPACE) + 1);
 161               *indent_inc = 0;
 162               while (n)
 163                 {
 164                   n--;
 165                   strcpy (indent_inc, O_SPACE);
 166                 }
 167             }
 168         }
 169       else if (strcmp ("-b", argv[i]) == 0)
 170         {
 171           i++;
 172           if (i < argc)
 173             iindent = argv[i];
 174         }
 175       else if (strcmp ("-r", argv[i]) == 0)
 176         {
 177           i++;
 178           if (i < argc)
 179             root = g_type_from_name (argv[i]);
 180         }
 181       else if (strcmp ("-n", argv[i]) == 0)
 182         {
 183           recursion = FALSE;
 184         }
 185       else if (strcmp ("froots", argv[i]) == 0)
 186         {
 187           gen_froots = 1;
 188         }
 189       else if (strcmp ("tree", argv[i]) == 0)
 190         {
 191           gen_tree = 1;
 192         }
 193       else if (strcmp ("-h", argv[i]) == 0)
 194         {
 195           return help (NULL);
 196         }
 197       else if (strcmp ("--help", argv[i]) == 0)
 198         {
 199           return help (NULL);
 200         }
 201       else
 202         return help (argv[i]);
 203     }
 204
 205   if (!gen_froots && !gen_tree)
 206     return help (argv[i-1]);
 207
 208   if (!indent_inc)
 209     {
 210       indent_inc = g_new (gchar, strlen (O_SPACE) + 1);
 211       *indent_inc = 0;
 212       strcpy (indent_inc, O_SPACE);
 213     }
 214
 215   if (gen_tree)
 216     show_nodes (root, 0, iindent);
 217   if (gen_froots)
 218     {
 219       root = ~0;
 220       for (i = 0; i <= G_TYPE_FUNDAMENTAL_MAX; i += G_TYPE_MAKE_FUNDAMENTAL (1))
 221         {
 222           const gchar *name = g_type_name (i);
 223
 224           if (name)
 225             show_nodes (i, 0, iindent);
 226         }
 227     }
 228
 229   return 0;
 230 }