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/*
* Copyright (c) 2010-2012 Stefan Bolte <portix@gmx.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <JavaScriptCore/JavaScript.h>
#include "dwb.h"
#include "js.h"
#define JS_STRING_MAX 1024
/* js_get_object_property {{{*/
JSObjectRef
js_get_object_property(JSContextRef ctx, JSObjectRef arg, const char *name) {
JSValueRef exc = NULL;
JSObjectRef ret;
JSStringRef buffer = JSStringCreateWithUTF8CString(name);
JSValueRef val = JSObjectGetProperty(ctx, arg, buffer, &exc);
JSStringRelease(buffer);
if (exc != NULL || !JSValueIsObject(ctx, val))
return NULL;
ret = JSValueToObject(ctx, val, &exc);
if (exc != NULL)
return NULL;
return ret;
}/*}}}*/
/* js_get_string_property {{{*/
char *
js_get_string_property(JSContextRef ctx, JSObjectRef arg, const char *name) {
JSValueRef exc = NULL;
JSStringRef buffer = JSStringCreateWithUTF8CString(name);
JSValueRef val = JSObjectGetProperty(ctx, arg, buffer, &exc);
JSStringRelease(buffer);
if (exc != NULL || !JSValueIsString(ctx, val) )
return NULL;
return js_value_to_char(ctx, val);
}/*}}}*/
/* js_get_double_property {{{*/
double
js_get_double_property(JSContextRef ctx, JSObjectRef arg, const char *name) {
double ret;
JSValueRef exc = NULL;
JSStringRef buffer = JSStringCreateWithUTF8CString(name);
JSValueRef val = JSObjectGetProperty(ctx, arg, buffer, &exc);
JSStringRelease(buffer);
if (exc != NULL || !JSValueIsNumber(ctx, val) )
return 0;
ret = JSValueToNumber(ctx, val, &exc);
if (exc != NULL)
return 0;
return ret;
}/*}}}*/
/* js_string_to_char
* Converts a JSStringRef, return a newly allocated char.
* {{{*/
char *
js_string_to_char(JSContextRef ctx, JSStringRef jsstring) {
size_t length = MIN(JSStringGetLength(jsstring), JS_STRING_MAX) + 1;
char *ret = g_new(char, length);
size_t written = JSStringGetUTF8CString(jsstring, ret, length);
/* TODO: handle length error */
if (written != length)
return NULL;
return ret;
}/*}}}*/
/*{{{*/
char *
js_value_to_char(JSContextRef ctx, JSValueRef value) {
JSValueRef exc = NULL;
if (! JSValueIsString(ctx, value))
return NULL;
JSStringRef jsstring = JSValueToStringCopy(ctx, value, &exc);
if (exc != NULL)
return NULL;
char *ret = js_string_to_char(ctx, jsstring);
JSStringRelease(jsstring);
return ret;
}/*}}}*/
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