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tvg loader: code refactoring

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revise the mimetype load method to keep it clean & neat.
This commit is contained in:
Hermet Park 2021-08-05 13:20:08 +09:00 • committed by Hermet Park
parent cff8815404
commit e12161d04f
1 changed files with 30 additions and 23 deletions
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53
src/lib/tvgLoader.cpp
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@ -113,7 +113,7 @@ static LoadModule* _find(FileType type)
}
static LoadModule* _find(const string& path)
static LoadModule* _findByPath(const string& path)
{
auto ext = path.substr(path.find_last_of(".") + 1);
if (!ext.compare("tvg")) return _find(FileType::Tvg);
@ -124,6 +124,26 @@ static LoadModule* _find(const string& path)
}
static LoadModule* _findByType(const string& mimeType)
{
if (mimeType.empty()) return nullptr;
auto type = FileType::Unknown;
if (mimeType == "tvg") type = FileType::Tvg;
else if (mimeType == "svg" || mimeType == "svg+xml") type = FileType::Svg;
else if (mimeType == "raw") type = FileType::Raw;
else if (mimeType == "png") type = FileType::Png;
else if (mimeType == "jpg" || mimeType == "jpeg") type = FileType::Jpg;
else {
TVGLOG("LOADER", "Given mimetype is unknown = \"%s\".", mimeType.c_str());
return nullptr;
}
return _find(type);
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
@ -149,7 +169,7 @@ shared_ptr<LoadModule> LoaderMgr::loader(const string& path, bool* invalid)
{
*invalid = false;
if (auto loader = _find(path)) {
if (auto loader = _findByPath(path)) {
if (loader->open(path)) return shared_ptr<LoadModule>(loader);
else delete(loader);
*invalid = true;
@ -160,31 +180,18 @@ shared_ptr<LoadModule> LoaderMgr::loader(const string& path, bool* invalid)
shared_ptr<LoadModule> LoaderMgr::loader(const char* data, uint32_t size, const string& mimeType, bool copy)
{
FileType filetype = FileType::Unknown;
if (!mimeType.empty()) {
if (mimeType == "tvg") filetype = FileType::Tvg;
else if (mimeType == "svg") filetype = FileType::Svg;
else if (mimeType == "svg+xml") filetype = FileType::Svg;
else if (mimeType == "raw") filetype = FileType::Raw;
else if (mimeType == "png") filetype = FileType::Png;
else if (mimeType == "jpg") filetype = FileType::Jpg;
else if (mimeType == "jpeg") filetype = FileType::Jpg;
else TVGLOG("LOADER", "Provided unknown mimetype \"%s\".", mimeType.c_str());
if (filetype != FileType::Unknown) {
auto loader = _find(static_cast<FileType>(filetype));
if (loader) {
if (loader->open(data, size, copy)) return shared_ptr<LoadModule>(loader);
else {
TVGLOG("LOADER", "Provided mimetype \"%s\" (filetype=%d) seems incorrect. Will try other types.", mimeType.c_str(), static_cast<int>(filetype));
delete(loader);
}
}
//Try first with the given MimeType
if (auto loader = _findByType(mimeType)) {
if (loader->open(data, size, copy)) {
return shared_ptr<LoadModule>(loader);
} else {
TVGLOG("LOADER", "Given mimetype \"%s\" seems incorrect or not supported. Will try again with other types.", mimeType.c_str());
delete(loader);
}
}
//Abnormal MimeType. Try with the candidates in the order
for (int i = 0; i < static_cast<int>(FileType::Unknown); i++) {
if (static_cast<FileType>(i) == filetype) continue;
auto loader = _find(static_cast<FileType>(i));
if (loader) {
if (loader->open(data, size, copy)) return shared_ptr<LoadModule>(loader);