patch-iron

A processing hack for ironing patches into shape.

It allows you to process each chunk making changes based upon it's local content.

It is useful when a task is more difficult that can be easily solved with grepdiff and a bash script.

Usage

• Open patch-iron.sln and bend Conversion.cs ProcessChunk () to your bidding.
• Build
• Run mono patch-iron.exe foo.patch > bar.patch

Hints

• Patches contain offset headers:

+++ b/src/AVFoundation/AVAssetDownloadTask.cs
@@ -9,16 +9,9 @@

that can be complex to replace, so in almost all cases it is better to replace one line with another, or just change a removal/add to keep by flipping the first characters.

• If you corrupt the headers, you'll get patch: **** Only garbage was found in the patch input. or patch: **** malformed patch at line 14:.
• Patch's have many PatchPart, which have many PatchChunk, each one a number of lines.
• Range from PatchChunk::CalculateDiffs will spell out the range of each diff in a chunk