From 4dc524c6c03bece7f37b9d4befa78512f67007f6 Mon Sep 17 00:00:00 2001
From: thurston <thurston@052ea7fc-9027-0410-9066-f65837a77df0>
Date: Sun, 15 Mar 2009 01:19:07 +0000
Subject: [PATCH] We don't need to create allocate the outpute file stream and
 open the file at the same time. Allocate the stream when the code generator
 is allocated, but open the output after the reduced machine is fully built,
 just before the write.

git-svn-id: http://svn.complang.org/ragel/trunk@735 052ea7fc-9027-0410-9066-f65837a77df0
---
 ragel/cdcodegen.cpp   |  5 -----
 ragel/cscodegen.cpp   |  5 -----
 ragel/dotcodegen.cpp  |  5 -----
 ragel/inputdata.cpp   | 12 ++++++++++++
 ragel/inputdata.h     |  1 +
 ragel/javacodegen.cpp |  5 -----
 ragel/main.cpp        |  1 +
 ragel/rubycodegen.cpp |  5 -----
 8 files changed, 14 insertions(+), 25 deletions(-)

diff --git a/ragel/cdcodegen.cpp b/ragel/cdcodegen.cpp
index afb1410..f60320f 100644
--- a/ragel/cdcodegen.cpp
+++ b/ragel/cdcodegen.cpp
@@ -102,11 +102,6 @@ ostream *cdOpenOutput( const char *inputFile )
 	if ( outputFileName != 0 ) {
 		/* Create the filter on the output and open it. */
 		outFilter = new output_filter( outputFileName );
-		outFilter->open( outputFileName, ios::out|ios::trunc );
-		if ( !outFilter->is_open() ) {
-			error() << "error opening " << outputFileName << " for writing" << endl;
-			exit(1);
-		}
 
 		/* Open the output stream, attaching it to the filter. */
 		outStream = new ostream( outFilter );
diff --git a/ragel/cscodegen.cpp b/ragel/cscodegen.cpp
index eddae7d..c653010 100644
--- a/ragel/cscodegen.cpp
+++ b/ragel/cscodegen.cpp
@@ -82,11 +82,6 @@ ostream *csharpOpenOutput( const char *inputFile )
 	if ( outputFileName != 0 ) {
 		/* Create the filter on the output and open it. */
 		outFilter = new output_filter( outputFileName );
-		outFilter->open( outputFileName, ios::out|ios::trunc );
-		if ( !outFilter->is_open() ) {
-			error() << "error opening " << outputFileName << " for writing" << endl;
-			exit(1);
-		}
 
 		/* Open the output stream, attaching it to the filter. */
 		outStream = new ostream( outFilter );
diff --git a/ragel/dotcodegen.cpp b/ragel/dotcodegen.cpp
index 3043e15..572bc72 100644
--- a/ragel/dotcodegen.cpp
+++ b/ragel/dotcodegen.cpp
@@ -44,11 +44,6 @@ ostream *dotOpenOutput( const char *inputFile )
 	if ( outputFileName != 0 ) {
 		/* Create the filter on the output and open it. */
 		outFilter = new output_filter( outputFileName );
-		outFilter->open( outputFileName, ios::out|ios::trunc );
-		if ( !outFilter->is_open() ) {
-			error() << "error opening " << outputFileName << " for writing" << endl;
-			exit(1);
-		}
 
 		/* Open the output stream, attaching it to the filter. */
 		outStream = new ostream( outFilter );
diff --git a/ragel/inputdata.cpp b/ragel/inputdata.cpp
index 4b8446b..aeb2c71 100644
--- a/ragel/inputdata.cpp
+++ b/ragel/inputdata.cpp
@@ -29,6 +29,7 @@
 using std::cout;
 using std::cerr;
 using std::endl;
+using std::ios;
 
 void InputData::generateSpecificReduced()
 {
@@ -88,6 +89,17 @@ void InputData::openOutput()
 	}
 }
 
+void InputData::openOutput2()
+{
+	if ( outFilter != 0 ) {
+		outFilter->open( outputFileName, ios::out|ios::trunc );
+		if ( !outFilter->is_open() ) {
+			error() << "error opening " << outputFileName << " for writing" << endl;
+			exit(1);
+		}
+	}
+}
+
 void InputData::prepareMachineGen()
 {
 	/* No machine spec or machine name given. Generate everything. */
diff --git a/ragel/inputdata.h b/ragel/inputdata.h
index d40bc5d..de2f8de 100644
--- a/ragel/inputdata.h
+++ b/ragel/inputdata.h
@@ -44,6 +44,7 @@ struct InputData
 	void writeOutput();
 	void generateSpecificReduced();
 	void openOutput();
+	void openOutput2();
 	void generateReduced();
 	void prepareMachineGen();
 };
diff --git a/ragel/javacodegen.cpp b/ragel/javacodegen.cpp
index 6936aa3..14d98eb 100644
--- a/ragel/javacodegen.cpp
+++ b/ragel/javacodegen.cpp
@@ -82,11 +82,6 @@ ostream *javaOpenOutput( const char *inputFile )
 	if ( outputFileName != 0 ) {
 		/* Create the filter on the output and open it. */
 		outFilter = new output_filter( outputFileName );
-		outFilter->open( outputFileName, ios::out|ios::trunc );
-		if ( !outFilter->is_open() ) {
-			error() << "error opening " << outputFileName << " for writing" << endl;
-			exit(1);
-		}
 
 		/* Open the output stream, attaching it to the filter. */
 		outStream = new ostream( outFilter );
diff --git a/ragel/main.cpp b/ragel/main.cpp
index 28b2126..120fae7 100644
--- a/ragel/main.cpp
+++ b/ragel/main.cpp
@@ -503,6 +503,7 @@ void process( const char *inputFileName )
 	if ( gblErrorCount > 0 )
 		exit(1);
 
+	inputData.openOutput2();
 	inputData.writeOutput();
 
 	/* Close the input and the intermediate file. */
diff --git a/ragel/rubycodegen.cpp b/ragel/rubycodegen.cpp
index f285c58..eb27ac7 100644
--- a/ragel/rubycodegen.cpp
+++ b/ragel/rubycodegen.cpp
@@ -101,11 +101,6 @@ ostream *rubyOpenOutput( const char *inputFile )
 	if ( outputFileName != 0 ) {
 		/* Create the filter on the output and open it. */
 		outFilter = new output_filter( outputFileName );
-		outFilter->open( outputFileName, ios::out|ios::trunc );
-		if ( !outFilter->is_open() ) {
-			error() << "error opening " << outputFileName << " for writing" << endl;
-			exit(1);
-		}
 
 		/* Open the output stream, attaching it to the filter. */
 		outStream = new ostream( outFilter );
-- 
2.7.4