From 077d78c3a94185450c5505d49bbdb5712fef080f Mon Sep 17 00:00:00 2001
From: Jason Fox <jason.fox@fiware.org>
Date: Sun, 13 Oct 2019 22:32:03 +0200
Subject: [PATCH] Improve image file path processing

Amend relative URLs for PDF processing
---
 resource/amend-uri.js                      | 36 ++++++++++++++++++++++
 resource/antlib.xml                        | 29 ++++++++++++-----
 resource/{relative.js => relative-path.js} |  0
 3 files changed, 58 insertions(+), 7 deletions(-)
 create mode 100644 resource/amend-uri.js
 rename resource/{relative.js => relative-path.js} (100%)

diff --git a/resource/amend-uri.js b/resource/amend-uri.js
new file mode 100644
index 0000000..3cd6c83
--- /dev/null
+++ b/resource/amend-uri.js
@@ -0,0 +1,36 @@
+/*
+ *  This file is part of the DITA Passthrough Plug-in project.
+ *  See the accompanying LICENSE file for applicable licenses.
+ */
+
+//
+//	Converts a value to relative path
+//
+//	@param  path -   The relative path of the file
+//	@param  href -  The relative path of the image
+//
+
+var path = attributes.get("path");
+var href = attributes.get("href");
+
+var hrefElements = href.split('/');
+var pathElements = path.split('/');
+var fullPath = [];
+
+for each (var elem in pathElements) {
+	if (elem !== ''){
+		fullPath.push(elem)
+	}
+}
+
+
+for each (var elem in hrefElements) {
+	if (elem === ''){
+	} else if (elem === '..'){
+		fullPath.pop()
+	} else {
+		fullPath.push(elem)
+	}
+}
+
+project.setProperty(attributes.get("to"), fullPath.join('/'));
\ No newline at end of file
diff --git a/resource/antlib.xml b/resource/antlib.xml
index 28af128..b1886f8 100644
--- a/resource/antlib.xml
+++ b/resource/antlib.xml
@@ -6,16 +6,28 @@
 <antlib xmlns:if="ant:if" xmlns:unless="ant:unless">
 
 	<!--
-		Converts a value to result as generated by unix machines
+		Returns the relative path of the src file
 
-		@param  string -   The value to convert
+		@param  src -   The value to convert
 		@param  to -  The property to set
 	-->
-	<scriptdef language="javascript" name="relative-path" src="${dita.plugin.fox.jason.passthrough.pandoc.dir}/resource/relative.js">
+	<scriptdef language="javascript" name="relative-path" src="${dita.plugin.fox.jason.passthrough.pandoc.dir}/resource/relative-path.js">
 		<attribute name="src" />
 		<attribute name="to" />
 	</scriptdef>
 
+	<!--
+		Converts a URI to make it relative to the ditamap root
+
+		@param  path -   The relative path of the file
+		@param  href -  The relative path of the image
+	-->
+	<scriptdef language="javascript" name="amend-uri" src="${dita.plugin.fox.jason.passthrough.pandoc.dir}/resource/amend-uri.js">
+		<attribute name="path" />
+		<attribute name="href" />
+		<attribute name="to" />
+	</scriptdef>
+
 
 	<!--
 		Individual file processing for pandoc.
@@ -124,6 +136,7 @@
 					<actions>
 						<local name="pandoc.image"/>
 						<local name="pandoc.image.exists"/>
+						<local name="pandoc.image.uri"/>
 
 
 						<condition property="pandoc.image" value="${src.dir}/@{href}"> 
@@ -133,11 +146,13 @@
 							</and>
 						</condition>
 
-						
-						<echo level="error" message="${pandoc.image}"/>
-						<echo level="error" message="${copy-image.todir}${relative.path}@{href}"/>
-
 						<copy taskname="pandoc.copy-image" if:set="pandoc.image" toFile="${copy-image.todir}${relative.path}/@{href}" failonerror="false" file="${pandoc.image}"/>
+
+						<amend-uri path="${relative.path}" href="@{href}" to="pandoc.image.uri" />	
+						<xmltask unless:set="copy-image.todir"  taskname="update-uri" source="@{dest}" dest="@{dest}">
+								<attr path="//image[@href='@{href}']" attr="href" value="${pandoc.image.uri}" /> 
+						</xmltask>
+
 					</actions>
 				</call>
 			</xmltask>
diff --git a/resource/relative.js b/resource/relative-path.js
similarity index 100%
rename from resource/relative.js
rename to resource/relative-path.js