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#include "impl.hpp"
#include "compat/assert.hpp"
#include "compat/exception.hpp"
#include "compat/defs.hpp"
#include "compat/strerror.hpp"
#include <cstring>
#include <cstdio>
#include <Corrade/Utility/Path.h>
#include <Magnum/Trade/ImageData.h>
namespace floormat::loader_detail {
fm_noinline
Trade::ImageData2D loader_impl::texture(StringView prefix, StringView filename_) noexcept(false)
{
ensure_plugins();
constexpr size_t max_extension_length = 16;
const auto N = prefix.size();
if (N > 0) [[likely]]
fm_assert(prefix[N-1] == '/');
fm_soft_assert(filename_.size() + prefix.size() + max_extension_length + 1 < FILENAME_MAX);
fm_soft_assert(check_atlas_name(filename_));
fm_soft_assert(tga_importer);
char buf[FILENAME_MAX];
const auto path_no_ext = make_atlas_path(buf, prefix, filename_);
const auto len = path_no_ext.size();
for (auto extension : { ".tga"_s, ".png"_s, ".webp"_s, })
{
fm_soft_assert(len + extension.size() < std::size(buf));
std::memcpy(buf + len, extension.data(), extension.size());
buf[len + extension.size()] = '\0';
auto path = StringView{buf, len + extension.size(), StringViewFlag::NullTerminated};
fm_debug_assert(path.size() < std::size(buf));
auto& importer = extension == ".tga"_s ? tga_importer : image_importer;
if (Path::exists(path) && importer->openFile(path))
{
auto img = importer->image2D(0);
if (!img)
fm_abort("can't allocate image for '%s'", buf);
auto ret = std::move(*img);
return ret;
}
}
const auto path = Path::currentDirectory();
buf[len] = '\0';
char errbuf[128];
fm_throw("can't open image '{}' (cwd '{}'): {}"_cf, buf, path ? StringView{*path} : "(null)"_s, get_error_string(errbuf));
}
} // namespace floormat::loader_detail
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