[Scummvm-git-logs] scummvm master -> 87012cbf21c9159bd0fee8a9ef6e03b0189ab9a3

[sev-]

This automated email contains information about 1 new commit which have been
pushed to the 'scummvm' repo located at https://github.com/scummvm/scummvm .

Summary:
87012cbf21 AD: Added ADGF for calculating md5 from the file tail


Commit: 87012cbf21c9159bd0fee8a9ef6e03b0189ab9a3
    https://github.com/scummvm/scummvm/commit/87012cbf21c9159bd0fee8a9ef6e03b0189ab9a3
Author: Eugene Sandulenko (sev at scummvm.org)
Date: 2021-10-16T09:24:08+03:00

Commit Message:
AD: Added ADGF for calculating md5 from the file tail

Changed paths:
    engines/advancedDetector.cpp
    engines/advancedDetector.h


diff --git a/engines/advancedDetector.cpp b/engines/advancedDetector.cpp
index dfec5a7585..a770ca6fcd 100644
--- a/engines/advancedDetector.cpp
+++ b/engines/advancedDetector.cpp
@@ -489,6 +489,8 @@ namespace Common {
 static char flagsToMD5Prefix(uint32 flags) {
 	if (flags & ADGF_MACRESFORK)
 		return 'm';
+	if (flags & ADGF_TAILMD5)
+		return 't';
 
 	return 'f';
 }
@@ -563,6 +565,9 @@ bool AdvancedMetaEngine::getFilePropertiesExtern(uint md5Bytes, const FileMap &a
 	if (!testFile.open(allFiles[fname]))
 		return false;
 
+	if (game.flags & ADGF_TAILMD5)
+		testFile.seek(md5Bytes, SEEK_END);
+
 	fileProps.size = testFile.size();
 	fileProps.md5 = Common::computeStreamMD5AsString(testFile, md5Bytes);
 	return true;
diff --git a/engines/advancedDetector.h b/engines/advancedDetector.h
index ceeab21e7a..c7fc00d1b2 100644
--- a/engines/advancedDetector.h
+++ b/engines/advancedDetector.h
@@ -90,6 +90,7 @@ struct ADGameFileDescription {
  */
 enum ADGameFlags {
 	ADGF_NO_FLAGS        =  0,        ///< No flags.
+	ADGF_TAILMD5		 = (1 << 16), ///< Calculate the MD5 for this entry from the end of the file.
 	ADGF_REMASTERED      = (1 << 17), ///< Add "-remastered' to gameid.
 	ADGF_AUTOGENTARGET   = (1 << 18), ///< Automatically generate gameid from @ref ADGameDescription::extra.
 	ADGF_UNSTABLE        = (1 << 19), ///< Flag to designate not yet officially supported games that are not fit for public testing.