Add fixtures support for Win32

Oh windows, how I heart thee

clay.c

@@ -6,8 +6,29 @@
 #include <math.h>
 
 /* required for sandboxing */
+#include <sys/types.h>
 #include <sys/stat.h>
-#include <unistd.h>
+
+#ifdef _WIN32
+#	include <windows.h>
+#	include <io.h>
+#	include <Shellapi.h>
+#	pragma comment(lib, "shell32")
+
+#	define PLATFORM_SEP '\\'
+#	define stat(path, st) _stat(path, st)
+#	define mkdir(path, mode) _mkdir(path)
+#	define access(path, mode) _access(path, mode)
+#	define mktemp(path) _mktemp(path)
+
+#	define W_OK 02
+#	define S_ISDIR(x) (x & _S_IFDIR) != 0
+	typedef struct _stat STAT_T;
+#else
+#	define PLATFORM_SEP '/'
+#	include <unistd.h>
+	typedef struct stat STAT_T;
+#endif
 
 #include "clay.h"
 
@@ -308,7 +329,7 @@ clay__assert(
 	if (should_abort) {
 		if (!_clay.trampoline_enabled) {
 			fprintf(stderr,
-				"Unhandled exception: a cleanup method raised an exception.");
+				"Fatal error: a cleanup method raised an exception.");
 			exit(-1);
 		}
 

clay_fs.c

@@ -1,3 +1,70 @@
+#ifdef _WIN32
+
+#define FOF_FLAGS (FOF_SILENT | FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_NOCONFIRMMKDIR)
+
+static char *
+fileops_path(const char *_path)
+{
+	char *path = NULL;
+	size_t length, i;
+
+	if (_path == NULL)
+		return NULL;
+
+	length = strlen(_path);
+	path = malloc(length + 2);
+
+	if (path == NULL)
+		return NULL;
+
+	memcpy(path, _path, length);
+	path[length] = 0;
+	path[length + 1] = 0;
+
+	for (i = 0; i < length; ++i) {
+		if (path[i] == '/')
+			path[i] = '\\';
+	}
+
+	return path;
+}
+
+static void
+fileops(int mode, const char *_source, const char *_dest)
+{
+	SHFILEOPSTRUCT fops;
+
+	char *source = fileops_path(_source);
+	char *dest = fileops_path(_dest);
+
+	ZeroMemory(&fops, sizeof(SHFILEOPSTRUCT));
+
+	fops.wFunc = mode;
+	fops.pFrom = source;
+	fops.pTo = dest;
+	fops.fFlags = FOF_FLAGS;
+
+	cl_assert_(
+		SHFileOperation(&fops) == 0,
+		"Windows SHFileOperation failed"
+	);
+
+	free(source);
+}
+
+static void
+fs_rm(const char *_source)
+{
+	fileops(FO_DELETE, _source, NULL);
+}
+
+static void
+fs_copy(const char *_source, const char *_dest)
+{
+	fileops(FO_COPY, _source, _dest);
+}
+
+#else
 static int
 shell_out(char * const argv[])
 {
@@ -62,3 +129,4 @@ fs_rm(const char *source)
 		"Failed to cleanup the sandbox"
 	);
 }
+#endif

clay_sandbox.c

@@ -1,19 +1,17 @@
-#ifdef _WIN32
-#	define PLATFORM_SEP '\\'
-#else
-#	define PLATFORM_SEP '/'
-#endif
-
 static char _clay_path[4096];
 
 static int
 is_valid_tmp_path(const char *path)
 {
-	struct stat st;
-	return (lstat(path, &st) == 0 &&
-		(S_ISDIR(st.st_mode) ||
-		S_ISLNK(st.st_mode)) &&
-		access(path, W_OK) == 0);
+	STAT_T st;
+
+	if (stat(path, &st) != 0)
+		return 0;
+
+	if (!S_ISDIR(st.st_mode))
+		return 0;
+
+	return (access(path, W_OK) == 0);
 }
 
 static int
@@ -62,21 +60,32 @@ static void clay_unsandbox(void)
 	if (_clay_path[0] == '\0')
 		return;
 
+#ifdef _WIN32
+	chdir("..");
+#endif
+
 	fs_rm(_clay_path);
 }
 
 static int clay_sandbox(void)
 {
 	const char path_tail[] = "clay_tmp_XXXXXX";
-	size_t len;
+	size_t len, i;
 
 	if (!find_tmp_path(_clay_path, sizeof(_clay_path)))
 		return 0;
 
 	len = strlen(_clay_path);
 
-	if (_clay_path[len - 1] != PLATFORM_SEP) {
-		_clay_path[len++] = PLATFORM_SEP;
+#ifdef _WIN32
+	for (i = 0; i < len; ++i) {
+		if (_clay_path[i] == '\\')
+			_clay_path[i] = '/';
+	}
+#endif
+
+	if (_clay_path[len - 1] != '/') {
+		_clay_path[len++] = '/';
 	}
 
 	strcpy(_clay_path + len, path_tail);