64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* JSON parser wrapper
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*
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* Copyright 2024 Armin Novak <anovak@thincast.com>
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* Copyright 2024 Thincast Technologies GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <math.h>
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#include <errno.h>
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#include <winpr/file.h>
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#include <winpr/json.h>
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#include <winpr/assert.h>
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WINPR_JSON* WINPR_JSON_ParseFromFile(const char* filename)
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{
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FILE* fp = winpr_fopen(filename, "r");
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if (!fp)
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return nullptr;
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WINPR_JSON* json = WINPR_JSON_ParseFromFileFP(fp);
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(void)fclose(fp);
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return json;
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}
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WINPR_JSON* WINPR_JSON_ParseFromFileFP(FILE* fp)
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{
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if (!fp)
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return nullptr;
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if (fseek(fp, 0, SEEK_END) != 0)
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return nullptr;
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const INT64 size = _ftelli64(fp);
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if (size < 0)
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return nullptr;
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if (fseek(fp, 0, SEEK_SET) != 0)
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return nullptr;
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const size_t usize = WINPR_ASSERTING_INT_CAST(size_t, size);
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char* str = calloc(usize + 1, sizeof(char));
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if (!str)
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return nullptr;
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WINPR_JSON* json = nullptr;
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const size_t s = fread(str, sizeof(char), usize, fp);
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if (s == usize)
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json = WINPR_JSON_ParseWithLength(str, usize);
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free(str);
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return json;
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}
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