94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
#include <hex/helpers/magic.hpp>
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#include <hex/helpers/utils.hpp>
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#include <hex/helpers/paths.hpp>
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#include <hex/providers/provider.hpp>
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#include <filesystem>
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#include <optional>
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#include <string>
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#include <magic.h>
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#if defined(OS_WINDOWS)
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#define MAGIC_PATH_SEPARATOR ";"
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#else
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#define MAGIC_PATH_SEPARATOR ":"
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#endif
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namespace hex::magic {
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static std::optional<std::string> getMagicFiles(bool sourceFiles = false) {
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std::string magicFiles;
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std::error_code error;
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for (const auto &dir : hex::getPath(ImHexPath::Magic)) {
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for (const auto &entry : fs::directory_iterator(dir, error)) {
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if (entry.is_regular_file() && ((sourceFiles && entry.path().extension().empty()) || (!sourceFiles && entry.path().extension() == ".mgc")))
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magicFiles += entry.path().string() + MAGIC_PATH_SEPARATOR;
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}
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}
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if (error)
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return std::nullopt;
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else
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return magicFiles;
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}
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bool compile() {
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magic_t ctx = magic_open(MAGIC_NONE);
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ON_SCOPE_EXIT { magic_close(ctx); };
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auto magicFiles = getMagicFiles(true);
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if (!magicFiles.has_value())
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return false;
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return magic_compile(ctx, magicFiles->c_str()) == 0;
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}
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std::string getDescription(const std::vector<u8> &data) {
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auto magicFiles = getMagicFiles();
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if (magicFiles.has_value()) {
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magic_t ctx = magic_open(MAGIC_NONE);
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ON_SCOPE_EXIT { magic_close(ctx); };
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if (magic_load(ctx, magicFiles->c_str()) == 0)
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return magic_buffer(ctx, data.data(), data.size()) ?: "";
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}
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return "";
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}
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std::string getDescription(prv::Provider *provider, size_t size) {
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std::vector<u8> buffer(std::min(provider->getSize(), size), 0x00);
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provider->read(provider->getBaseAddress(), buffer.data(), buffer.size());
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return getDescription(buffer);
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}
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std::string getMIMEType(const std::vector<u8> &data) {
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auto magicFiles = getMagicFiles();
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if (magicFiles.has_value()) {
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magic_t ctx = magic_open(MAGIC_MIME_TYPE);
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ON_SCOPE_EXIT { magic_close(ctx); };
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if (magic_load(ctx, magicFiles->c_str()) == 0)
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return magic_buffer(ctx, data.data(), data.size()) ?: "";
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}
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return "";
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}
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std::string getMIMEType(prv::Provider *provider, size_t size) {
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std::vector<u8> buffer(std::min(provider->getSize(), size), 0x00);
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provider->read(provider->getBaseAddress(), buffer.data(), buffer.size());
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return getMIMEType(buffer);
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}
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} |