From c1a1e272cc9b823f97f8f1bde6a24dfa5fe973e8 Mon Sep 17 00:00:00 2001
From: jed <inmysocks@fastmail.com>
Date: Mon, 14 Dec 2020 00:24:23 +0100
Subject: [PATCH] Add a hook to allow modifying the the behaviour creating
 tiddler paths (#5267)

* Add a hook to allow modifying the the behaviour creating tiddler paths

This is needed for Bob to use the core to generate tiddler fileInfo

I don't know if this is the best way to make the hook, but it works for what I need

* update th-make-tiddler-path arguments

the value is the current path, the parameter passed in is the original unmodified path so it is available to subsequent hooks
---
 core/modules/utils/filesystem.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/core/modules/utils/filesystem.js b/core/modules/utils/filesystem.js
index eb1050f90..e616f9f70 100644
--- a/core/modules/utils/filesystem.js
+++ b/core/modules/utils/filesystem.js
@@ -382,11 +382,13 @@ exports.generateTiddlerFilepath = function(title,options) {
 		count++;
 	} while(fs.existsSync(fullPath));
 	//If the path does not start with the wikiPath directory or the wikiTiddlersPath directory, or if the last write failed
-	var encode = !(fullPath.indexOf(path.resolve($tw.boot.wikiPath)) == 0 || fullPath.indexOf($tw.boot.wikiTiddlersPath) == 0) || ((options.fileInfo || {writeError: false}).writeError == true);
+	var newPath = fullPath;
+	var encode = !(fullPath.indexOf($tw.boot.wikiPath) == 0 || fullPath.indexOf($tw.boot.wikiTiddlersPath) == 0) || ((options.fileInfo || {writeError: false}).writeError == true);
 	if(encode){
 		//encodeURIComponent() and then resolve to tiddler directory
-		fullPath = path.resolve(directory, encodeURIComponent(fullPath));
+		newPath = path.resolve(directory, encodeURIComponent(fullPath));
 	}
+	fullPath = $tw.hooks.invokeHook("th-make-tiddler-path", newPath, fullPath);
 	// Return the full path to the file
 	return fullPath;
 };