SWORD25: Added GetXmlFile helper function

The XML files included with the game don't include an XML header line, which is required by the ScummVM XML parser. This helper function encapsulates the GetFile method to return a buffer that includes the required line at the start.

svn-id: r53276

1 files changed, 22 insertions, 0 deletions

diff --git a/engines/sword25/package/packagemanager.h b/engines/sword25/package/packagemanager.h
index 04f863bef8..c441fff122 100644
--- a/engines/sword25/package/packagemanager.h
+++ b/engines/sword25/package/packagemanager.h
@@ -102,6 +102,28 @@ public:
 	 */
 	virtual byte *GetFile(const Common::String &FileName, unsigned int *pFileSize = NULL) = 0;
 	/**
+	 * Downloads an XML file and prefixes it with an XML Version key, since the XML files don't contain it,
+	 * and it is required for ScummVM to correctly parse the XML.
+	 * @param FileName      The filename of the file to load
+	 * @param pFileSize     Pointer to the variable that will contain the size of the loaded file. The deafult is NULL.
+	 * @return              Specifies a pointer to the loaded data of the file
+	 * @remark              The client must not forget to release the data of the file using BE_DELETE_A.
+	 */
+	char *GetXmlFile(const Common::String &FileName, unsigned int *pFileSize = NULL) {
+		const char *versionStr = "<?xml version=\"1.0\"?>";
+		unsigned int fileSize;
+		char *data = (char *)GetFile(FileName, &fileSize);
+		char *result = (char *)malloc(fileSize + strlen(versionStr) + 1);
+		strcpy(result, versionStr);
+		Common::copy(data, data + fileSize, result + strlen(versionStr));
+		result[fileSize + strlen(versionStr)] = '\0';
+
+		free(data);
+		if (pFileSize) *pFileSize = fileSize + strlen(versionStr);
+		return result;
+	}
+	
+	/**
 	 * Returns the path to the current directory.
 	 * @return              Returns a string containing the path to the current directory.
 	 * If the path could not be determined, an empty string is returned.