Handle names of constants during API conversion.

Use an XSLT stylesheet to get a list of all the constant names.

tools/api_conv.pl

@@ -1,6 +1,25 @@
 #!/usr/bin/perl -plw
 use strict;
 
+BEGIN {
+	%::const = map { $_ => 1 } (
+		"XCBNone",
+		"XCBCopyFromParent",
+		"XCBCurrentTime",
+		"XCBNoSymbol",
+		"XCBError",
+		"XCBReply",
+	);
+	open(CONST, shift) or die "failed to open constants list: $!";
+	while(<CONST>)
+	{
+		chomp;
+		die "invalid constant name: \"$_\"" unless /^XCB[A-Za-z0-9_]*$/;
+		$::const{$_} = 1;
+	}
+	close(CONST);
+}
+
 sub convert($$)
 {
 	local $_ = shift;
@@ -10,6 +29,7 @@ sub convert($$)
 	return "int$1_t" if /^INT(8|16|32)$/;
 	return "uint8_t" if $_ eq 'BOOL' or $_ eq 'BYTE';
 	return $_ if /_/ or !/^XCB(.+)/;
+	my $const = defined $::const{$_};
 	$_ = $1;
 
 	my %abbr = (
@@ -19,6 +39,9 @@ sub convert($$)
 	);
 
 	s/[A-Z](?:[A-Z0-9]*|[a-z0-9]*)(?=[A-Z]|$)/"_" . ($abbr{$&} or lc($&))/eg;
+
+	return "XCB" . uc($_) if $const;
+
 	$_ .= "_t" unless $fun;
 
 	return "xcb" . $_;

tools/const-names.xsl

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+
+  <xsl:output method="text"/>
+
+  <xsl:strip-space elements="*"/>
+
+  <xsl:variable name="nl"><xsl:text>
+</xsl:text></xsl:variable>
+
+  <xsl:template match="enum/item">
+    <xsl:value-of select="concat('XCB', /xcb/@extension-name, ../@name, @name, $nl)"/>
+  </xsl:template>
+
+  <xsl:template match="event|eventcopy|error|errorcopy">
+    <xsl:value-of select="concat('XCB', /xcb/@extension-name, @name, $nl)"/>
+  </xsl:template>
+
+  <xsl:template match="text()"/>
+
+</xsl:transform>