Re: gconftool-2 limitation for getting schemas

[ritz <khadgaray gmail com>]

Hello

On Thu, 2007-10-04 at 15:21 +0530, umang gupta wrote:
> Hi ,
> 
> I want to clear some issues regarding gconftool-2 .
> 
> [1] If I attach schema structure to a key "KEY' as with schema key
> "SCEHMAKEY' { using "gconftool-2 --install-schema-file = ./xxx.schemas"
> command  where xxx.schemas is a xml file contaning schema
> information  }. 
> 
> gconftool-2 --get-schema-name KEY  gives me o/p as  "SCEHMAKEY"
> [as what we expect].
> 
> [2]But If I attach schema by using schema api:
> gconf_client_set_schema(),  
Thanks for code. I have modified the same, and attached it.

> 
> "gconftool-2 --get-schema-name KEY" gives me "no schema set for KEY"
> 
> why it is so ?

When writing schema programmatically, certain information needed by
gconftool-2 is skipped out.
  

A base schema file

<gconfschemafile>
  <schemalist>
    <schema>
      <key>/schemas/dummy/testgconf/inttest</key>
      <applyto>/apps/dummy/testgconf/inttest</applyto>
      <owner>TestingApps</owner>
      <type>int</type>
      <default>999</default>
      <locale name="C">
                <short> short desciption</short>
                <longdesc>a long description</longdesc>
      </locale>
    </schema>
  </schemalist>
</gconfschemafile>


The schema file which is written.

<gconf>
        <entry name="inttest" mtime="1191774109" type="schema"
stype="int" owner="TestingApps">
                <local_schema locale="C" short_desc=" a short
desciption">
                        <default type="int" value="999">
                        </default>
                        <longdesc>a long description</longdesc>
                </local_schema>
        </entry>
</gconf>


  From the above, i strongly suspected gconftool-2 was unable to find
associated schema due to missing "applyto" key. On deeper analysis, this
does turn out to be true. This seems to be a limitation of gconftool

from gconftool.c

static int
get_schema_values_from_xml(xmlNodePtr node, GSList** ret_values)
...

static int
extract_global_info(xmlNodePtr node,
                    SchemaInfo* info)
{
	...
	else if (strcmp((char *)iter->name, "applyto") == 0)
	...
}


Retrieving the schema works fine programmatically. 

> 
> Where does schema info [xml file] getting stored in both above cases.[as
> what I know in $(HOME)/.gconf ] & from where gconftool-2 access the
> schema attached to a KEY.
> 
> Is there any configuration source path to be added to /etc/gconf/2/path
> file. {it has .gconf already}
> 
> Thanks in advance:
> Umang Gupta
> 
> 
> 
> 
> _______________________________________________
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> http://mail.gnome.org/mailman/listinfo/gconf-list
-- 
Ritesh Khadgaray
ॐ मणि पद्मे हूँ
Desktop LinuX N Stuff
Ph: +919970164885
Eat Right, Exercise, Die Anyway.

/*
  Ritesh Khadgaray <khadgaray gmail com> -- gconf schema thinggy
  
  Note:
	adds a dummy schema entery to gconf registery, and checks the value

  To build 
	$ gcc -o gconf_test gconf_test.c `pkg-config --libs --cflags gconf-2.0` && ./gconf_test

*/

#include <glib.h>

#include <gconf/gconf-client.h>
#include <gconf/gconf-schema.h>

#define KEY "/dummy/testgconf/inttest"
#define SKEY "/schemas/dummy/testgconf/inttest"

void gconf_test_get(void)
{
	static const gchar fn[] = "gconf_test_get";
	g_message("%s : starting", fn);

	GConfClient *client = NULL;
	GConfSchema *schema = NULL;
	
	client = gconf_client_get_default();
	schema = gconf_client_get_schema(client, SKEY, NULL);		
	
	if(NULL == schema){
		g_object_unref(client);
		g_warning("%s : unable to retireve schema for %s", fn, SKEY);
		g_message("%s : premature ending\n", fn);
		return;
	}

	GConfValue *value = gconf_schema_get_default_value(schema);
	switch(gconf_schema_get_type(schema)){
		case GCONF_VALUE_INT:
			g_message("%s: schema : %s \n type int with default value: %d"
					  "\n current value of: %d",
					  fn, SKEY,
					  gconf_value_get_int(value),
					  gconf_client_get_int(client, KEY, NULL));
			break;
		default:
			g_warning("%s : something wrong with type", fn);
	}
	
	g_message("%s : "
			  "\n locale - %s"
			  "\n owner - %s"			  
			  "\n short desciption - %s"
			  "\n long desciption -\n\t %s",			  
			  fn,
			  gconf_schema_get_locale(schema),
			  gconf_schema_get_owner(schema),
			  gconf_schema_get_short_desc(schema),
			  gconf_schema_get_long_desc(schema));
	

	gconf_schema_free(schema);
	g_object_unref(client);
	
	g_message("%s : ending\n", fn);
}

void gconf_test_set(void)
{
	static const char fn[]="gconf_test_set";
	g_message("%s : starting",fn);
	
	GConfClient *client=NULL;
	GConfSchema *schema=NULL;
	GConfValue *value=NULL;
	
	client = gconf_client_get_default();
	value = gconf_value_new(GCONF_VALUE_INT);
	gconf_value_set_int(value,999);
		
	schema=gconf_schema_new();		
	gconf_schema_set_type(schema,GCONF_VALUE_INT);
	gconf_schema_set_locale(schema,"C");
	gconf_schema_set_short_desc(schema," a short desciption");
	gconf_schema_set_long_desc(schema,"a long description");
	gconf_schema_set_owner(schema,"TestingApps");
	gconf_schema_set_default_value(schema,value);

	if(FALSE==gconf_client_set_schema(client, SKEY,schema, NULL))
		g_warning("%s : error setting schema key: %s",fn, SKEY);
	else
		g_message("%s : set schema %s", fn, SKEY);

	if(FALSE==gconf_client_set_int(client,KEY,100,NULL))
		g_warning("%s : error setting key: %s", fn, KEY);
	else
		g_message("%s : set key%s", fn, KEY);


	gconf_client_suggest_sync(client,NULL);
		
	gconf_schema_free(schema);
	g_object_unref(client);

	g_message("%s : ending\n", fn);
}


int main(int argc, char **argv)
{
	/* create client object */
	g_type_init();
	gconf_init(argc,argv,NULL);

	gconf_test_set();
	gconf_test_get();
	
	return 0;
}

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