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/*
* QuickJS: binary JSON module (test only)
*
* Copyright (c) 2017-2019 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "quickjs-libc.h"
#include "cutils.h"
static JSValue js_bjson_read(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
uint8_t *buf;
uint64_t pos, len;
JSValue obj;
size_t size;
if (JS_ToIndex(ctx, &pos, argv[1]))
return JS_EXCEPTION;
if (JS_ToIndex(ctx, &len, argv[2]))
return JS_EXCEPTION;
buf = JS_GetArrayBuffer(ctx, &size, argv[0]);
if (!buf)
return JS_EXCEPTION;
if (pos + len > size)
return JS_ThrowRangeError(ctx, "array buffer overflow");
obj = JS_ReadObject(ctx, buf + pos, len, 0);
return obj;
}
static JSValue js_bjson_write(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
size_t len;
uint8_t *buf;
JSValue array;
buf = JS_WriteObject(ctx, &len, argv[0], 0);
if (!buf)
return JS_EXCEPTION;
array = JS_NewArrayBufferCopy(ctx, buf, len);
js_free(ctx, buf);
return array;
}
static const JSCFunctionListEntry js_bjson_funcs[] = {
JS_CFUNC_DEF("read", 3, js_bjson_read ),
JS_CFUNC_DEF("write", 1, js_bjson_write ),
};
static int js_bjson_init(JSContext *ctx, JSModuleDef *m)
{
return JS_SetModuleExportList(ctx, m, js_bjson_funcs,
countof(js_bjson_funcs));
}
#ifdef JS_SHARED_LIBRARY
#define JS_INIT_MODULE js_init_module
#else
#define JS_INIT_MODULE js_init_module_bjson
#endif
JSModuleDef *JS_INIT_MODULE(JSContext *ctx, const char *module_name)
{
JSModuleDef *m;
m = JS_NewCModule(ctx, module_name, js_bjson_init);
if (!m)
return NULL;
JS_AddModuleExportList(ctx, m, js_bjson_funcs, countof(js_bjson_funcs));
return m;
}
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