1 files changed, 325 insertions, 0 deletions
diff --git a/tests/clar/fs.h b/tests/clar/fs.h
new file mode 100644
index 000000000..b7a1ff9d2
--- /dev/null
+++ b/tests/clar/fs.h
@@ -0,0 +1,325 @@
+#ifdef _WIN32
+
+#define RM_RETRY_COUNT	5
+#define RM_RETRY_DELAY	10
+
+#ifdef __MINGW32__
+
+/* These security-enhanced functions are not available
+ * in MinGW, so just use the vanilla ones */
+#define wcscpy_s(a, b, c) wcscpy((a), (c))
+#define wcscat_s(a, b, c) wcscat((a), (c))
+
+#endif /* __MINGW32__ */
+
+static int 
+fs__dotordotdot(WCHAR *_tocheck)
+{
+	return _tocheck[0] == '.' &&
+		(_tocheck[1] == '\0' ||
+		 (_tocheck[1] == '.' && _tocheck[2] == '\0'));
+}
+
+static int
+fs_rmdir_rmdir(WCHAR *_wpath)
+{
+	unsigned retries = 1;
+
+	while (!RemoveDirectoryW(_wpath)) {
+		/* Only retry when we have retries remaining, and the
+		 * error was ERROR_DIR_NOT_EMPTY. */
+		if (retries++ > RM_RETRY_COUNT ||
+			ERROR_DIR_NOT_EMPTY != GetLastError())
+			return -1;
+
+		/* Give whatever has a handle to a child item some time
+		 * to release it before trying again */
+		Sleep(RM_RETRY_DELAY * retries * retries);
+	}
+
+	return 0;
+}
+
+static void
+fs_rmdir_helper(WCHAR *_wsource)
+{
+	WCHAR buffer[MAX_PATH];
+	HANDLE find_handle;
+	WIN32_FIND_DATAW find_data;
+	size_t buffer_prefix_len;
+
+	/* Set up the buffer and capture the length */
+	wcscpy_s(buffer, MAX_PATH, _wsource);
+	wcscat_s(buffer, MAX_PATH, L"\\");
+	buffer_prefix_len = wcslen(buffer);
+
+	/* FindFirstFile needs a wildcard to match multiple items */
+	wcscat_s(buffer, MAX_PATH, L"*");
+	find_handle = FindFirstFileW(buffer, &find_data);
+	cl_assert(INVALID_HANDLE_VALUE != find_handle);
+
+	do {
+		/* FindFirstFile/FindNextFile gives back . and ..
+		 * entries at the beginning */
+		if (fs__dotordotdot(find_data.cFileName))
+			continue;
+
+		wcscpy_s(buffer + buffer_prefix_len, MAX_PATH - buffer_prefix_len, find_data.cFileName);
+
+		if (FILE_ATTRIBUTE_DIRECTORY & find_data.dwFileAttributes)
+			fs_rmdir_helper(buffer);
+		else {
+			/* If set, the +R bit must be cleared before deleting */
+			if (FILE_ATTRIBUTE_READONLY & find_data.dwFileAttributes)
+				cl_assert(SetFileAttributesW(buffer, find_data.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY));
+
+			cl_assert(DeleteFileW(buffer));
+		}
+	}
+	while (FindNextFileW(find_handle, &find_data));
+
+	/* Ensure that we successfully completed the enumeration */
+	cl_assert(ERROR_NO_MORE_FILES == GetLastError());
+
+	/* Close the find handle */
+	FindClose(find_handle);
+
+	/* Now that the directory is empty, remove it */
+	cl_assert(0 == fs_rmdir_rmdir(_wsource));
+}
+
+static int
+fs_rm_wait(WCHAR *_wpath)
+{
+	unsigned retries = 1;
+	DWORD last_error;
+
+	do {
+		if (INVALID_FILE_ATTRIBUTES == GetFileAttributesW(_wpath))
+			last_error = GetLastError();
+		else
+			last_error = ERROR_SUCCESS;
+
+		/* Is the item gone? */
+		if (ERROR_FILE_NOT_FOUND == last_error ||
+			ERROR_PATH_NOT_FOUND == last_error)
+			return 0;
+
+		Sleep(RM_RETRY_DELAY * retries * retries);	
+	}
+	while (retries++ <= RM_RETRY_COUNT);
+
+	return -1;
+}
+
+static void
+fs_rm(const char *_source)
+{
+	WCHAR wsource[MAX_PATH];
+	DWORD attrs;
+
+	/* The input path is UTF-8. Convert it to wide characters
+	 * for use with the Windows API */
+	cl_assert(MultiByteToWideChar(CP_UTF8,
+				MB_ERR_INVALID_CHARS,
+				_source,
+				-1, /* Indicates NULL termination */
+				wsource,
+				MAX_PATH));
+
+	/* Does the item exist? If not, we have no work to do */
+	attrs = GetFileAttributesW(wsource);
+
+	if (INVALID_FILE_ATTRIBUTES == attrs)
+		return;
+
+	if (FILE_ATTRIBUTE_DIRECTORY & attrs)
+		fs_rmdir_helper(wsource);
+	else {
+		/* The item is a file. Strip the +R bit */
+		if (FILE_ATTRIBUTE_READONLY & attrs)
+			cl_assert(SetFileAttributesW(wsource, attrs & ~FILE_ATTRIBUTE_READONLY));
+
+		cl_assert(DeleteFileW(wsource));
+	}
+
+	/* Wait for the DeleteFile or RemoveDirectory call to complete */
+	cl_assert(0 == fs_rm_wait(wsource));
+}
+
+static void
+fs_copydir_helper(WCHAR *_wsource, WCHAR *_wdest)
+{
+	WCHAR buf_source[MAX_PATH], buf_dest[MAX_PATH];
+	HANDLE find_handle;
+	WIN32_FIND_DATAW find_data;
+	size_t buf_source_prefix_len, buf_dest_prefix_len;
+
+	wcscpy_s(buf_source, MAX_PATH, _wsource);
+	wcscat_s(buf_source, MAX_PATH, L"\\");
+	buf_source_prefix_len = wcslen(buf_source);
+
+	wcscpy_s(buf_dest, MAX_PATH, _wdest);
+	wcscat_s(buf_dest, MAX_PATH, L"\\");
+	buf_dest_prefix_len = wcslen(buf_dest);
+
+	/* Get an enumerator for the items in the source. */
+	wcscat_s(buf_source, MAX_PATH, L"*");
+	find_handle = FindFirstFileW(buf_source, &find_data);
+	cl_assert(INVALID_HANDLE_VALUE != find_handle);
+
+	/* Create the target directory. */
+	cl_assert(CreateDirectoryW(_wdest, NULL));
+
+	do {
+		/* FindFirstFile/FindNextFile gives back . and ..
+		 * entries at the beginning */
+		if (fs__dotordotdot(find_data.cFileName))
+			continue;
+
+		wcscpy_s(buf_source + buf_source_prefix_len, MAX_PATH - buf_source_prefix_len, find_data.cFileName);
+		wcscpy_s(buf_dest + buf_dest_prefix_len, MAX_PATH - buf_dest_prefix_len, find_data.cFileName);
+
+		if (FILE_ATTRIBUTE_DIRECTORY & find_data.dwFileAttributes)
+			fs_copydir_helper(buf_source, buf_dest);
+		else
+			cl_assert(CopyFileW(buf_source, buf_dest, TRUE));
+	}
+	while (FindNextFileW(find_handle, &find_data));
+
+	/* Ensure that we successfully completed the enumeration */
+	cl_assert(ERROR_NO_MORE_FILES == GetLastError());
+
+	/* Close the find handle */
+	FindClose(find_handle);
+}
+
+static void
+fs_copy(const char *_source, const char *_dest)
+{
+	WCHAR wsource[MAX_PATH], wdest[MAX_PATH];
+	DWORD source_attrs, dest_attrs;
+	HANDLE find_handle;
+	WIN32_FIND_DATAW find_data;
+	
+	/* The input paths are UTF-8. Convert them to wide characters
+	 * for use with the Windows API. */
+	cl_assert(MultiByteToWideChar(CP_UTF8,
+				MB_ERR_INVALID_CHARS,
+				_source,
+				-1,
+				wsource,
+				MAX_PATH));
+
+	cl_assert(MultiByteToWideChar(CP_UTF8,
+				MB_ERR_INVALID_CHARS,
+				_dest,
+				-1,
+				wdest,
+				MAX_PATH));
+
+	/* Check the source for existence */
+	source_attrs = GetFileAttributesW(wsource);
+	cl_assert(INVALID_FILE_ATTRIBUTES != source_attrs);
+
+	/* Check the target for existence */
+	dest_attrs = GetFileAttributesW(wdest);
+
+	if (INVALID_FILE_ATTRIBUTES != dest_attrs) {
+		/* Target exists; append last path part of source to target.
+		 * Use FindFirstFile to parse the path */
+		find_handle = FindFirstFileW(wsource, &find_data);
+		cl_assert(INVALID_HANDLE_VALUE != find_handle);
+		wcscat_s(wdest, MAX_PATH, L"\\");
+		wcscat_s(wdest, MAX_PATH, find_data.cFileName);
+		FindClose(find_handle);
+
+		/* Check the new target for existence */
+		cl_assert(INVALID_FILE_ATTRIBUTES == GetFileAttributesW(wdest));
+	}
+
+	if (FILE_ATTRIBUTE_DIRECTORY & source_attrs)
+		fs_copydir_helper(wsource, wdest);
+	else
+		cl_assert(CopyFileW(wsource, wdest, TRUE));
+}
+
+void
+cl_fs_cleanup(void)
+{
+	fs_rm(fixture_path(_clar_path, "*"));
+}
+
+#else
+static int
+shell_out(char * const argv[])
+{
+	int status;
+	pid_t pid;
+
+	pid = fork();
+
+	if (pid < 0) {
+		fprintf(stderr,
+			"System error: `fork()` call failed.\n");
+		exit(-1);
+	}
+
+	if (pid == 0) {
+		execv(argv[0], argv);
+	}
+
+	waitpid(pid, &status, 0);
+	return WEXITSTATUS(status);
+}
+
+static void
+fs_copy(const char *_source, const char *dest)
+{
+	char *argv[5];
+	char *source;
+	size_t source_len;
+
+	source = strdup(_source);
+	source_len = strlen(source);
+
+	if (source[source_len - 1] == '/')
+		source[source_len - 1] = 0;
+
+	argv[0] = "/bin/cp";
+	argv[1] = "-R";
+	argv[2] = source;
+	argv[3] = (char *)dest;
+	argv[4] = NULL;
+
+	cl_must_pass_(
+		shell_out(argv),
+		"Failed to copy test fixtures to sandbox"
+	);
+
+	free(source);
+}
+
+static void
+fs_rm(const char *source)
+{
+	char *argv[4];
+
+	argv[0] = "/bin/rm";
+	argv[1] = "-Rf";
+	argv[2] = (char *)source;
+	argv[3] = NULL;
+
+	cl_must_pass_(
+		shell_out(argv),
+		"Failed to cleanup the sandbox"
+	);
+}
+
+void
+cl_fs_cleanup(void)
+{
+	clar_unsandbox();
+	clar_sandbox();
+}
+#endif