Oyranos  0.9.7
Oyranos is a full featured Color Management System
tutorial_json_options.c

Oyjl API examples.

#include "oyOptions_s.h"
#include <stdio.h>
void testOyjl( void );
int main (int argc OY_UNUSED, char ** argv OY_UNUSED)
{
int error = 0;
oyOptions_s * result = 0;
const char * t = NULL,
* json;
FILE * zout = stdout;
json = "{\"org\":{\"free\":[{\"s1key_a\":\"val_a\",\"s1key_b\":\"val_b\"},{\"s2key_c\":\"val_c\",\"s2key_d\":\"val_d\"}],\"key_e\":\"val_e\"}}";
oyOptions_s * options = NULL;
error = oyOptions_FromJSON( json, options, &result, "org" );
fprintf( zout, "%s\n", t?t:0 );
json = "{\"org\":{\"free\":[{\"s1key_a\":\"val_a\",\"s1key_b\":\"val_b\"},{\"s2key_c\":\"val_c\",\"s2key_d\":\"val_d\"}],\"key_e\":\"val_e_xxx\"}}";
error = oyOptions_FromJSON( json, options, &result, "org" );
fprintf( zout, "%s\n", t?t:0 );
json = "{\"org\":{\"free\":[{\"s1key_a\":\"val_a\",\"s1key_b\":\"val_b\"},{\"s2key_c\":\"val_c\",\"s2key_d\":\"val_d\"}],\"key_e\":\"val_e_yyy\",\"key_f\":\"val_f\"}}";
error = oyOptions_FromJSON( json, options, &result, "org" );
fprintf( zout, "%s\n", t?t:0 );
oyOptions_SetFromString( &options, OY_STD "/key_path",
"net/host/path", OY_CREATE_NEW);
json = "{\"org\":{\"free\":[{\"s1key_a\":\"val_a\",\"s1key_b\":\"val_b\"},{\"s2key_c\":\"val_c\",\"s2key_d\":\"val_d\"}],\"key_e\":\"val_e_yyy\",\"key_f\":\"val_f\"}}";
error = oyOptions_FromJSON( json, options, &result, "org/free/[%d]", 1 );
fprintf( zout, "%s\n", t?t:0 );
if(error)
fprintf( zout, "oyOptions_FromJSON() returned %d\n", error );
oyOptions_Release( &options );
oyOptions_Release( &result );
testOyjl( );
return 0;
}
#include "oyranos_json.h"
void testOyjl(void)
{
/* JSON string */
const char * text = "{\"org\":{\"test\":[{\"s1key_a\":\"val_a\",\"s1key_b\":\"val_b\"},{\"s2key_c\":\"val_c\",\"s2key_d\":\"val_d\"}],\"key_e\":\"val_e_yyy\",\"key_f\":\"val_f\"}}";
oyjl_val value = 0;
int level = 0;
char * json = 0;
char error_buffer[128];
/* read JSON into C data struct */
oyjl_val root = oyjlTreeParse( text, error_buffer, 128 );
/* convert back to JSON */
oyjlTreeToJson( root, &level, &json );
fprintf( stderr, "%s\n", json );
free(json); json = NULL;
/* use a xpath to obtain a node */
value = oyjlTreeGetValuef( root, 0, "org/test/[%d]", 1 );
oyjlTreeToJson( value, &level, &json );
fprintf( stderr, "%s\n", json );
free(json); json = NULL;
/* use a xpath to remove a node */
oyjlTreeClearValue( root, "org/test/[0]" );
oyjlTreeToJson( root, &level, &json );
fprintf( stderr, "%s\n", json );
free(json); json = NULL;
/* use a xpath to get a new node in a existing tree */
value = oyjlTreeGetValue( root, OYJL_CREATE_NEW, "org/add/opt" );
oyjlTreeToJson( root, &level, &json );
fprintf( stderr, "%s\n", json );
free(json); json = NULL;
/* set the new node to some string value */
oyjlValueSetString( value, "value" );
oyjlTreeToJson( root, &level, &json );
fprintf( stderr, "%s\n", json );
free(json); json = NULL;
/* release memory */
oyjlTreeFree ( root );
/* use a xpath to create new tree */
root = oyjlTreeNew( "new/tree/key" );
oyjlTreeToJson( root, &level, &json );
fprintf( stderr, "%s\n", json );
free(json); json = NULL;
/* release memory */
oyjlTreeFree( root );
}
#define OY_CREATE_NEW
Definition: oyOptions_s.h:52
@ oyNAME_NICK
Definition: oyranos_core.h:73
#define OY_STD
Definition: oyranos_definitions.h:144
generic Options
Definition: oyOptions_s.h:80
OYAPI int OYEXPORT oyOptions_Release(oyOptions_s **options)
release and possibly deallocate a oyOptions_s object
Definition: oyOptions_s.c:91
const char * oyOptions_GetText(oyOptions_s *options, oyNAME_e type)
dump options to text
Definition: oyOptions_s.c:1091
int oyOptions_FromJSON(const char *json_text, oyOptions_s *options, oyOptions_s **result, const char *xformat,...)
deserialise a text file to oyOptions_s data
Definition: oyOptions_s.c:426
int oyOptions_SetFromString(oyOptions_s **obj, const char *registration, const char *value, uint32_t flags)
change a value
Definition: oyOptions_s.c:1519