118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2024, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
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#include "AssetLib/glTF/glTFCommon.h"
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namespace glTFCommon {
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using namespace glTFCommon::Util;
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namespace Util {
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bool ParseDataURI(const char *const_uri, size_t uriLen, DataURI &out) {
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if (nullptr == const_uri) {
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return false;
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}
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if (const_uri[0] != 0x10) { // we already parsed this uri?
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if (strncmp(const_uri, "data:", 5) != 0) // not a data uri?
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return false;
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}
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// set defaults
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out.mediaType = "text/plain";
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out.charset = "US-ASCII";
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out.base64 = false;
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char *uri = const_cast<char *>(const_uri);
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if (uri[0] != 0x10) {
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uri[0] = 0x10;
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uri[1] = uri[2] = uri[3] = uri[4] = 0;
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size_t i = 5, j;
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if (uri[i] != ';' && uri[i] != ',') { // has media type?
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uri[1] = char(i);
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for (;i < uriLen && uri[i] != ';' && uri[i] != ','; ++i) {
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// nothing to do!
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}
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}
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while (i < uriLen && uri[i] == ';') {
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uri[i++] = '\0';
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for (j = i; i < uriLen && uri[i] != ';' && uri[i] != ','; ++i) {
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// nothing to do!
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}
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if (strncmp(uri + j, "charset=", 8) == 0) {
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uri[2] = char(j + 8);
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} else if (strncmp(uri + j, "base64", 6) == 0) {
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uri[3] = char(j);
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}
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}
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if (i < uriLen) {
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uri[i++] = '\0';
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uri[4] = char(i);
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} else {
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uri[1] = uri[2] = uri[3] = 0;
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uri[4] = 5;
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}
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}
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if (uri[1] != 0) {
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out.mediaType = uri + uri[1];
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}
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if (uri[2] != 0) {
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out.charset = uri + uri[2];
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}
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if (uri[3] != 0) {
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out.base64 = true;
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}
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out.data = uri + uri[4];
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out.dataLength = (uri + uriLen) - out.data;
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return true;
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}
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} // namespace Util
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} // namespace glTFCommon
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#endif
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