1 files changed, 99 insertions, 0 deletions
diff --git a/doc/syms.xsl b/doc/syms.xsl
new file mode 100644
index 0000000..ebca88f
--- /dev/null
+++ b/doc/syms.xsl
@@ -0,0 +1,99 @@
+<?xml version="1.0"?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                version="1.0">
+  <xsl:output method="text" encoding="UTF-8"/>
+
+  <xsl:variable name="api" select="document('libxml2-api.xml')"/>
+
+  <xsl:template match="/">
+    <xsl:text>#
+# Officially exported symbols, for which header
+# file definitions are installed in /usr/include/libxml2
+#
+# Automatically generated from symbols.xml and syms.xsl
+#
+# Versions here are *fixed* to match the libxml2 version
+# at which the symbol was introduced. This ensures that
+# a new client app requiring symbol foo() can't accidentally
+# run with old libxml2.so not providing foo() - the global
+# soname version info can't enforce this since we never
+# change the soname
+#
+
+</xsl:text>
+    <xsl:apply-templates select="/symbols/release"/>
+  </xsl:template>
+
+  <xsl:template match="release">
+    <xsl:variable name="prev"
+                  select="preceding-sibling::release[position()=1]"/>
+    <xsl:text>LIBXML2_</xsl:text>
+    <xsl:value-of select="string(@version)"/>
+    <xsl:text> {
+    global:
+</xsl:text>
+    <xsl:for-each select="symbol">
+      <xsl:if test="string(preceding-sibling::symbol[position()=1]/@file) != string(@file)">
+        <xsl:text>
+# </xsl:text>
+        <xsl:value-of select="@file"/>
+        <xsl:text>
+</xsl:text>
+      </xsl:if>
+
+      <xsl:apply-templates select="."/>
+    </xsl:for-each>
+
+    <xsl:text>} </xsl:text>
+    <xsl:if test="$prev">
+      <xsl:text>LIBXML2_</xsl:text>
+      <xsl:value-of select="$prev/@version"/>
+    </xsl:if>
+    <xsl:text>;
+
+</xsl:text>
+  </xsl:template>
+
+  <xsl:template match="symbol">
+    <xsl:variable name="name" select="string(.)"/>
+    <xsl:variable name="file" select="string(@file)"/>
+    <xsl:choose>
+      <xsl:when test="@removed">
+        <xsl:text># </xsl:text>
+        <xsl:value-of select="$name"/>
+        <xsl:text>; removed in </xsl:text>
+        <xsl:value-of select="@removed"/>
+        <xsl:text>
+</xsl:text>
+      </xsl:when>
+      <xsl:otherwise>
+        <!-- make sure we can find that symbol exported from the API list -->
+        <xsl:variable name="def"
+            select="$api/api/files/file[@name = $file]/exports[@symbol = $name]"/>
+        <xsl:if test="string($def/@symbol) != $name">
+          <xsl:message terminate="yes">
+            <xsl:text>Failed to find definition in libxml2-api.xml:</xsl:text>
+            <xsl:value-of select="$name"/>
+          </xsl:message>
+        </xsl:if>
+
+        <xsl:text>  </xsl:text>
+        <xsl:value-of select="$name"/>
+        <xsl:text>;</xsl:text>
+        <xsl:if test="$def/@type = 'variable'">
+          <xsl:text> # variable</xsl:text>
+        </xsl:if>
+        <xsl:if test="@comment">
+          <xsl:text># </xsl:text>
+          <xsl:value-of select="@comment"/>
+          <xsl:text>
+</xsl:text>
+        </xsl:if>
+        <xsl:text>
+</xsl:text>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
+</xsl:stylesheet>
+