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◆ main openmsx / src / unittest / FileOperations_test.cc
3.4 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#include "catch.hpp"
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#include "FileOperations.hh"
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using namespace openmsx::FileOperations;
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TEST_CASE("stem")
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{
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	auto check = [](std::string_view input) {
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		// Verify that stem() is equivalent to stripExtension(getFilename(input))
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		auto expected = stripExtension(getFilename(input));
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		auto actual = stem(input);
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		CHECK(actual == expected);
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	};
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	check("");                       // Input is empty
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	check("filename");               // No '/' or '.'
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	check("/path/to/filename");      // Input with '/' but no '.'
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	check("filename.ext");           // Input with '.' but no '/'
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	check("/path/to/filename.ext");  // Input with both '/' and '.'
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	check("/path.to/file.name.ext"); // Input with multiple '.' in filename
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	check("/path.to/file");          // Input with '.' in directory name
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	check("/path/to/");              // Input with no filename (ends with '/')
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	check("/path.to/");              // Input with no filename but has '.' in path
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	check(".hidden");                //
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	check("/.hidden");               //
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	check("/path/to/.hidden");       //
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	check("/path/to/.hidden.ext");   //
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	// These might be handled differently by std::filesystem::path::stem()
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	check(".");
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	check("..");
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	check("path/.");
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	check("path/..");
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}
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TEST_CASE("cleanFilename")
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{
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	// Characters that are valid on every platform are left alone.
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	CHECK(cleanFilename("") == "");
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	CHECK(cleanFilename("openmsx") == "openmsx");
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	CHECK(cleanFilename("Philips NMS 8250") == "Philips NMS 8250");
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	CHECK(cleanFilename("setup-1.oms") == "setup-1.oms");
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	// Path separators are always replaced, this is the actual bug.
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	CHECK(cleanFilename("Philips VG 8235/39") == "Philips VG 8235_39");
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	CHECK(cleanFilename("/") == "_");
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	CHECK(cleanFilename("a/b/c") == "a_b_c");
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	// Control characters and DEL are always replaced.
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	CHECK(cleanFilename("a\tb") == "a_b");
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	CHECK(cleanFilename("a\nb") == "a_b");
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	CHECK(cleanFilename("a\x7f" "b") == "a_b");
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	// Non-ASCII (UTF-8) is left alone: only bytes < 0x80 are considered.
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	CHECK(cleanFilename("caf\xc3\xa9") == "caf\xc3\xa9");
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	CHECK(cleanFilename("\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e") ==
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	                    "\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e"); // 日本語
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	// A real YEN SIGN is a valid filename character and must be kept. Note
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	// that on a Japanese Windows the path separator is *displayed* as a yen
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	// sign, but it is the ordinary backslash (0x5c), which is handled above.
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	CHECK(cleanFilename("a\xc2\xa5" "b") == "a\xc2\xa5" "b");         // U+00A5 ¥
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	CHECK(cleanFilename("a\xef\xbf\xa5" "b") == "a\xef\xbf\xa5" "b"); // U+FFE5 ￥
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	// U+8868 is 0x95 0x5c in Shift-JIS: scanning *those* bytes for a
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	// backslash would corrupt it. openMSX filenames are UTF-8 (0xe8 0xa1
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	// 0xa8 here), so no such trailing byte can occur.
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	CHECK(cleanFilename("\xe8\xa1\xa8") == "\xe8\xa1\xa8");           // U+8868 表
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	// The result always has the same length as the input.
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	auto checkLen = [](std::string_view input) {
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		CHECK(cleanFilename(input).size() == input.size());
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	};
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	checkLen("Yamaha CX5MII/128");
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	checkLen("Mitsubishi ML-G30/model 1");
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	checkLen("caf\xc3\xa9/\xe6\x97\xa5\xe6\x9c\xac");
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#ifdef _WIN32
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	CHECK(cleanFilename(R"(a\b)") == "a_b");
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	CHECK(cleanFilename("C:foo") == "C_foo");
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	CHECK(cleanFilename("a?b*c") == "a_b_c");
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	CHECK(cleanFilename("a[b]c") == "a_b_c");
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#else
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	// These are legal on UNIX and must be preserved.
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	CHECK(cleanFilename(R"(a\b)") == R"(a\b)");
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	CHECK(cleanFilename("a:b") == "a:b");
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	CHECK(cleanFilename("a[b]c") == "a[b]c");
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#endif
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}