depressed: fix base path (opening)

src/depressed_document.cpp

@@ -330,7 +330,14 @@ namespace Depressed {
 					}
 				} else if(read == ERead::PAGES) {
 					if(wcscmp(value, L"Page") == 0) {
-						CPage *page = new CPage();
+						CPage *page;
+
+						try {
+							page = new CPage();
+						} catch (std::bad_alloc) {
+							success = false;
+							break;
+						}
 
 						page->Create();
 

src/depressed_open.cpp

@@ -152,15 +152,15 @@ namespace Depressed {
 		IXmlWriter *writer;
 		IStream *filestream;
 
-		dirptr = wcschr(filename, '/');
+		dirptr = wcsrchr(filename, '/');
 		if(dirptr) {
 			wchar_t *dirptr2;
 
-			dirptr2 = wcschr(dirptr, '\\');
+			dirptr2 = wcsrchr(dirptr, '\\');
 			if(dirptr2)
 				dirptr = dirptr2;
 		} else
-			dirptr = wcschr(filename, '\\');
+			dirptr = wcsrchr(filename, '\\');
 		if(dirptr) {
 			size_t len;
 

src/depressed_page.cpp

@@ -153,15 +153,17 @@ namespace Depressed {
 			hr = writer->WriteString(m_filename);
 		else {
 			size_t basepath_len;
-			wchar_t *filename;
+			wchar_t *filename = m_filename;
 
 			basepath_len = wcslen(basepath);
-			filename = m_filename + basepath_len;
-			while(*filename) {
-				if(*filename == '\\' || *filename == '/')
-					filename++;
-				else
-					break;
+			if(wcsncmp(basepath, filename, basepath_len) == 0) {
+				filename += basepath_len;
+				while(*filename) {
+					if(*filename == '\\' || *filename == '/')
+						filename++;
+					else
+						break;
+				}
 			}
 
 			hr = writer->WriteString(filename);