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 #include        "../config.h"
  20
  21 #include        <glib-object.h>
  22
  23 #include        <stdio.h>
  24 #include        <stdlib.h>
  25 #include        <string.h>
  26 #ifdef HAVE_UNISTD_H
  27 #include        <unistd.h>
  28 #endif
  29 #include        <sys/stat.h>
  30 #include        <fcntl.h>
  31
  32 static gchar *indent_inc = NULL;
  33 static guint spacing = 1;
  34 static FILE *f_out = NULL;
  35 static GType root = 0;
  36 static gboolean recursion = TRUE;
  37
  38 #if 0
  39 #  define       O_SPACE "\\as"
  40 #  define       O_ESPACE " "
  41 #  define       O_BRANCH "\\aE"
  42 #  define       O_VLINE "\\al"
  43 #  define       O_LLEAF "\\aL"
  44 #  define       O_KEY_FILL "_"
  45 #else
  46 #  define       O_SPACE " "
  47 #  define       O_ESPACE ""
  48 #  define       O_BRANCH "+"
  49 #  define       O_VLINE "|"
  50 #  define       O_LLEAF "`"
  51 #  define       O_KEY_FILL "_"
  52 #endif
  53
  54 static void
  55 show_nodes (GType        type,
  56             GType        sibling,
  57             const gchar *indent)
  58 {
  59   GType   *children;
  60   guint i;
  61
  62   if (!type)
  63     return;
  64
  65   children = g_type_children (type, NULL);
  66
  67   if (type != root)
  68     for (i = 0; i < spacing; i++)
  69       fprintf (f_out, "%s%s\n", indent, O_VLINE);
  70
  71   fprintf (f_out, "%s%s%s%s",
  72            indent,
  73            sibling ? O_BRANCH : (type != root ? O_LLEAF : O_SPACE),
  74            O_ESPACE,
  75            g_type_name (type));
  76
  77   for (i = strlen (g_type_name (type)); i <= strlen (indent_inc); i++)
  78     fputs (O_KEY_FILL, f_out);
  79
  80   fputc ('\n', f_out);
  81
  82   if (children && recursion)
  83     {
  84       gchar *new_indent;
  85       GType   *child;
  86
  87       if (sibling)
  88         new_indent = g_strconcat (indent, O_VLINE, indent_inc, NULL);
  89       else
  90         new_indent = g_strconcat (indent, O_SPACE, indent_inc, NULL);
  91
  92       for (child = children; *child; child++)
  93         show_nodes (child[0], child[1], new_indent);
  94
  95       g_free (new_indent);
  96     }
  97
  98   g_free (children);
  99 }
 100
 101 static gint
 102 help (gchar *arg)
 103 {
 104   fprintf (stderr, "usage: query <qualifier> [-r <type>] [-{i|b} \"\"] [-s #] [-{h|x|y}]\n");
 105   fprintf (stderr, "       -r       specifiy root type\n");
 106   fprintf (stderr, "       -n       don't descend type tree\n");
 107   fprintf (stderr, "       -h       guess what ;)\n");
 108   fprintf (stderr, "       -b       specify indent string\n");
 109   fprintf (stderr, "       -i       specify incremental indent string\n");
 110   fprintf (stderr, "       -s       specify line spacing\n");
 111   fprintf (stderr, "qualifiers:\n");
 112   fprintf (stderr, "       froots   iterate over fundamental roots\n");
 113   fprintf (stderr, "       tree     print type tree\n");
 114
 115   return arg != NULL;
 116 }
 117
 118 int
 119 main (gint   argc,
 120       gchar *argv[])
 121 {
 122   GLogLevelFlags fatal_mask;
 123   gboolean gen_froots = 0;
 124   gboolean gen_tree = 0;
 125   guint i;
 126   gchar *iindent = "";
 127
 128   f_out = stdout;
 129
 130   fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
 131   fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
 132   g_log_set_always_fatal (fatal_mask);
 133
 134   root = G_TYPE_OBJECT;
 135
 136   g_type_init ();
 137
 138   for (i = 1; i < argc; i++)
 139     {
 140       if (strcmp ("-s", argv[i]) == 0)
 141         {
 142           i++;
 143           if (i < argc)
 144             spacing = atoi (argv[i]);
 145         }
 146       else if (strcmp ("-i", argv[i]) == 0)
 147         {
 148           i++;
 149           if (i < argc)
 150             {
 151               char *p;
 152               guint n;
 153
 154               p = argv[i];
 155               while (*p)
 156                 p++;
 157               n = p - argv[i];
 158               indent_inc = g_new (gchar, n * strlen (O_SPACE) + 1);
 159               *indent_inc = 0;
 160               while (n)
 161                 {
 162                   n--;
 163                   strcpy (indent_inc, O_SPACE);
 164                 }
 165             }
 166         }
 167       else if (strcmp ("-b", argv[i]) == 0)
 168         {
 169           i++;
 170           if (i < argc)
 171             iindent = argv[i];
 172         }
 173       else if (strcmp ("-r", argv[i]) == 0)
 174         {
 175           i++;
 176           if (i < argc)
 177             root = g_type_from_name (argv[i]);
 178         }
 179       else if (strcmp ("-n", argv[i]) == 0)
 180         {
 181           recursion = FALSE;
 182         }
 183       else if (strcmp ("froots", argv[i]) == 0)
 184         {
 185           gen_froots = 1;
 186         }
 187       else if (strcmp ("tree", argv[i]) == 0)
 188         {
 189           gen_tree = 1;
 190         }
 191       else if (strcmp ("-h", argv[i]) == 0)
 192         {
 193           return help (NULL);
 194         }
 195       else if (strcmp ("--help", argv[i]) == 0)
 196         {
 197           return help (NULL);
 198         }
 199       else
 200         return help (argv[i]);
 201     }
 202
 203   if (!gen_froots && !gen_tree)
 204     return help (argv[i-1]);
 205
 206   if (!indent_inc)
 207     {
 208       indent_inc = g_new (gchar, strlen (O_SPACE) + 1);
 209       *indent_inc = 0;
 210       strcpy (indent_inc, O_SPACE);
 211       strcpy (indent_inc, O_SPACE);
 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 < 256; i++)
 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 }