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