From 921e79025cd64cfcd68b6e24bd897d3a5e48304a Mon Sep 17 00:00:00 2001
From: David Sheets <sheets@ashimaarts.com>
Date: Thu, 30 Aug 2012 17:48:04 -0700
Subject: [PATCH] Support local asset copying, rooted build trees, asset
 deletion

---
 demo-page.xsl       | 67 ++++++++++++++++++++++---------------
 local-assets.xsl    | 81 +++++++++++++++++++++++++++++++++++----------
 static-manifest.xsl | 52 +++++++++++++++++++++++++----
 3 files changed, 149 insertions(+), 51 deletions(-)

diff --git a/demo-page.xsl b/demo-page.xsl
index a76d3a1..9be6f4e 100644
--- a/demo-page.xsl
+++ b/demo-page.xsl
@@ -55,16 +55,39 @@
   <xsl:template match="/">
     <xsl:apply-templates />
   </xsl:template>
-  
-  <xsl:template match="link" mode="manifest">
-    <xsl:if test="@rel!='start'">
-      <link>
-        <xsl:copy-of select="@*[local-name(.)!='data-src']" />
-      </link>
-    </xsl:if>
+
+  <xsl:template name="prefix-href">
+    <xsl:param name="root" />
+    <xsl:attribute name="{local-name()}">
+      <xsl:choose>
+        <xsl:when test="substring(.,1,4)='http'">
+          <xsl:copy />
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:value-of select="concat($root,.)" />
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:attribute>
   </xsl:template>
-  <xsl:template match="script" mode="manifest">
-    <xsl:copy-of select="." />
+
+  <xsl:template match="@data-local" mode="manifest" />
+  <xsl:template match="@data-src" mode="manifest" />
+  <xsl:template match="@src | @href" mode="manifest">
+    <xsl:param name="root" />
+    <xsl:call-template name="prefix-href">
+      <xsl:with-param name="root" select="$root" />
+    </xsl:call-template>
+  </xsl:template>
+  <xsl:template match="@*" mode="manifest"><xsl:copy /></xsl:template>
+  
+  <xsl:template match="link[@rel='start']" mode="manifest" />
+  <xsl:template match="link|script" mode="manifest">
+    <xsl:param name="root" />
+    <xsl:copy>
+      <xsl:apply-templates select="@*" mode="manifest">
+        <xsl:with-param name="root" select="$root" />
+      </xsl:apply-templates>
+    </xsl:copy>
   </xsl:template>
 
   <xsl:template match="@*|node()" mode="article">
@@ -78,27 +101,15 @@
       </xsl:apply-templates>
     </xsl:element>
   </xsl:template>
-  <xsl:template match="script/@src" mode="article">
+  <xsl:template match="img/@src | script/@src" mode="article">
     <xsl:param name="root" />
-    <xsl:attribute name="src">
-      <xsl:value-of select="concat($root,.)" />
-    </xsl:attribute>
-  </xsl:template>
-  <xsl:template match="img/@src" mode="article">
-    <xsl:param name="root" />
-    <xsl:attribute name="src">
-      <xsl:choose>
-        <xsl:when test="substring(.,1,4)='http'">
-          <xsl:copy />
-        </xsl:when>
-        <xsl:otherwise>
-          <xsl:value-of select="concat($root,.)" />
-        </xsl:otherwise>
-      </xsl:choose>
-    </xsl:attribute>
+    <xsl:call-template name="prefix-href">
+      <xsl:with-param name="root" select="$root" />
+    </xsl:call-template>
   </xsl:template>
 
   <xsl:template match="manifest">
+    <xsl:param name="reldir" select="$reldir" />
     <xsl:variable name="root">
       <xsl:call-template name="dirname">
 	<xsl:with-param name="reldir" select="$reldir" />
@@ -113,7 +124,9 @@
 	<xsl:copy-of select="." />
       </xsl:for-each>
 
-      <xsl:apply-templates select="link | script" mode="manifest" />
+      <xsl:apply-templates select="link | script" mode="manifest">
+        <xsl:with-param name="root" select="$root" />
+      </xsl:apply-templates>
 
       <xsl:copy-of select="$exprs/head/*" />
     </head>
diff --git a/local-assets.xsl b/local-assets.xsl
index 2afac27..1436bc6 100644
--- a/local-assets.xsl
+++ b/local-assets.xsl
@@ -4,30 +4,77 @@
 		xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:include href="path-utils.xsl" />
   <xsl:output method="text" indent="no" />
+
+  <xsl:param name="action" select="'create'" />
   
   <xsl:template match="/">
     <xsl:text>#!/bin/sh&#xA;&#xA;</xsl:text>
-    <xsl:apply-templates mode="http" />
+    <xsl:apply-templates mode="remote" />
+    <xsl:apply-templates mode="local" />
   </xsl:template>
 
-  <xsl:template match="text()" mode="http">
+  <xsl:template match="text()" mode="remote">
+    <xsl:text>&#xA;</xsl:text>
+  </xsl:template>
+  <xsl:template match="text()" mode="local">
     <xsl:text>&#xA;</xsl:text>
   </xsl:template>
 
-  <xsl:template match="link[@data-src]" mode="http">
-    <xsl:variable name="prefix">
-      <xsl:if test="//head/@data-src-prefix">
-	<xsl:value-of select="//head/@data-src-prefix" />
-      </xsl:if>
-      <xsl:if test="/manifest/@data-src-prefix">
-	<xsl:value-of select="/manifest/@data-src-prefix" />
-      </xsl:if>
-    </xsl:variable>
-    <xsl:text>curl </xsl:text>
-    <xsl:value-of select="concat($prefix,@data-src)" />
-    <xsl:text> --create-dirs -o </xsl:text>
-    <xsl:value-of select="@href" />
-    <xsl:text> -z </xsl:text>
-    <xsl:value-of select="@href" />
+  <xsl:template match="link[@data-src]" mode="remote">
+    <xsl:if test="$action='create'">
+      <xsl:variable name="prefix">
+        <xsl:if test="//head/@data-src-prefix">
+          <xsl:value-of select="//head/@data-src-prefix" />
+        </xsl:if>
+        <xsl:if test="/manifest/@data-src-prefix">
+          <xsl:value-of select="/manifest/@data-src-prefix" />
+        </xsl:if>
+      </xsl:variable>
+      <xsl:text>curl </xsl:text>
+      <xsl:value-of select="concat($prefix,@data-src)" />
+      <xsl:text> --create-dirs -o </xsl:text>
+      <xsl:value-of select="@href" />
+      <xsl:text> -z </xsl:text>
+      <xsl:value-of select="@href" />
+      <xsl:text>&#xA;</xsl:text>
+    </xsl:if>
+  </xsl:template>
+
+  <xsl:template name="local-fs">
+    <xsl:param name="path" />
+    <xsl:if test="$action='create'">
+      <xsl:text>mkdir -p `dirname </xsl:text>
+      <xsl:value-of select="$path" />
+      <xsl:text>`&#xA;</xsl:text>
+      <xsl:text>cp -f </xsl:text>
+      <xsl:value-of select="@data-local" />
+      <xsl:text> </xsl:text>
+      <xsl:value-of select="$path" />
+      <xsl:text>&#xA;</xsl:text>
+    </xsl:if>
+    <xsl:if test="$action='delete'">
+      <xsl:text>rm -rfv </xsl:text>
+      <xsl:choose>
+        <xsl:when test="contains($path,'/')">
+          <xsl:value-of select="substring-before($path,'/')" />
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:value-of select="$path" />
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:if>
   </xsl:template>
+
+  <xsl:template match="link[@data-local]" mode="local">
+    <xsl:call-template name="local-fs">
+      <xsl:with-param name="path" select="@href" />
+    </xsl:call-template>
+  </xsl:template>
+
+  <xsl:template match="script[@data-local]" mode="local">
+    <xsl:call-template name="local-fs">
+      <xsl:with-param name="path" select="@src" />
+    </xsl:call-template>
+  </xsl:template>
+
 </xsl:stylesheet>
diff --git a/static-manifest.xsl b/static-manifest.xsl
index 070df4c..cce326e 100644
--- a/static-manifest.xsl
+++ b/static-manifest.xsl
@@ -4,6 +4,8 @@
 		xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:include href="path-utils.xsl" />
 
+  <xsl:param name="rooted" select="false()" />
+
   <xsl:template match="/">
     <manifest>
       <xsl:apply-templates />
@@ -31,8 +33,10 @@
     <xsl:choose>
       <xsl:when test="@rel='start' and $root != ''" />
       <xsl:otherwise>
-        <link href="{concat($root,@href)}">
-          <xsl:apply-templates select="@*" />
+        <link>
+          <xsl:apply-templates select="@*">
+            <xsl:with-param name="root" select="$root" />
+          </xsl:apply-templates>
         </link>
       </xsl:otherwise>
     </xsl:choose>
@@ -40,15 +44,20 @@
 
   <xsl:template match="head//script[@src] | script[@src]">
     <xsl:param name="root" />
-    <script src="{concat($root,@src)}">
-      <xsl:apply-templates select="@*" />
+    <script>
+      <xsl:apply-templates select="@*">
+        <xsl:with-param name="root" select="$root" />
+      </xsl:apply-templates>
     </script>
   </xsl:template>
 
   <xsl:template match="body//script[@src]">
     <xsl:param name="root" />
-    <link rel="tag" href="{concat($root,@src)}">
-      <xsl:apply-templates select="@type" />
+    <link rel="tag">
+      <xsl:apply-templates select="@src | @type">
+        <xsl:with-param name="root" select="$root" />
+        <xsl:with-param name="attr" select="'href'" />
+      </xsl:apply-templates>
     </link>
   </xsl:template>
 
@@ -56,7 +65,36 @@
     <xsl:copy />
   </xsl:template>
 
-  <xsl:template match="@href | @src" />
+  <xsl:template name="make-data-local">
+    <xsl:param name="path" />
+    <xsl:for-each select="..">
+      <xsl:attribute name="data-local">
+        <xsl:value-of select="$path" />
+      </xsl:attribute>
+    </xsl:for-each>
+  </xsl:template>
+
+  <xsl:template match="@href | @src">
+    <xsl:param name="root" />
+    <xsl:param name="attr" select="local-name()" />
+    <xsl:choose>
+      <xsl:when test="$rooted">
+        <xsl:attribute name="{$attr}">
+          <xsl:value-of select="." />
+        </xsl:attribute>
+        <xsl:if test="$root!='' and not(../@data-src)">
+          <xsl:call-template name="make-data-local">
+            <xsl:with-param name="path" select="concat($root,.)" />
+          </xsl:call-template>
+        </xsl:if>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:attribute name="{$attr}">
+          <xsl:value-of select="concat($root,.)" />
+        </xsl:attribute>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
 
   <xsl:template match="@data-src">
     <xsl:attribute name="data-src">