X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FLyXVC.h;h=f0302eee6637e40f9a3ae4765f3d0b19ba29e5ef;hb=5320ce020673013167a23a4221e2762603889453;hp=92db82c52c1571d7f33e03e7cc5ab43b00a5e3f9;hpb=f26f9900761baa5913bc05a1afbf21d97b5e2143;p=lyx.git

diff --git a/src/LyXVC.h b/src/LyXVC.h
index 92db82c52c..f0302eee66 100644
--- a/src/LyXVC.h
+++ b/src/LyXVC.h
@@ -104,6 +104,20 @@ public:
 	void undoLast();
 	/// Does the current VC supports this operation?
 	bool undoLastEnabled() const;
+	/**
+	 * Prepare revision rev of the file into newly created temporary file
+	 * and save the filename into parameter f.
+	 * Parameter rev can be either revision number or negative number
+	 * which is interpreted as how many revision back from the current
+	 * one do we want. rev=0 is reserved for the last (committed) revision.
+	 * We need rev to be string, since in various VCS revision is not integer.
+	 * If RCS addressed by a single number, it is automatically used
+	 * as the last number in the whole revision specification (it applies
+	 * for retrieving normal revisions (rev>0) or backtracking (rev<0).
+	 */
+	bool prepareFileRevision(std::string const & rev, std::string & f);
+	/// Does the current VC supports this operation?
+	bool prepareFileRevisionEnabled();
 
 	/**
 	 * Generate a log file and return the filename.
@@ -133,6 +147,7 @@ public:
 
 	// type of the revision information
 	enum RevisionInfo {
+		Unknown = 0,
 		File = 1,
 		Tree = 2,
 		Author = 3,
@@ -145,7 +160,7 @@ public:
 	 * Its safe to call it regardless VCS is in usage or this
 	 * info is (un)available. Returns empty string in such a case.
 	 */
-	std::string revisionInfo(RevisionInfo const info);
+	std::string revisionInfo(RevisionInfo const info) const;
 
 private:
 	///