| /* |
| * 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; |
| } |