From dbe91a6d91e4f1dbfda22f9def90b8010d6d8951 Mon Sep 17 00:00:00 2001
From: Tomasz Sowa <t.sowa@ttmath.org>
Date: Wed, 9 Dec 2009 00:34:17 +0000
Subject: [PATCH] added: Patter::delete_all_white flag        if true all
 text-items which have only white characters (with new lines as well)       
 will be deleted        this not actually delete the whole item but only the
 string        the item will be present with an empty string        default:
 false

git-svn-id: svn://ttmath.org/publicrep/ezc/trunk@260 e52654a7-88a9-db11-a3e9-0013d4bc506e
---
 src/ezc.cpp | 37 ++++++++++++++++++++++++++++++++++---
 src/ezc.h   | 13 ++++++++++++-
 2 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/src/ezc.cpp b/src/ezc.cpp
index 84d0be1..6011c10 100644
--- a/src/ezc.cpp
+++ b/src/ezc.cpp
@@ -121,7 +121,8 @@ void SplitUnixDirectory(const std::string & name, std::string & dir, std::string
 
 Pattern::Pattern()
 {
-	allow_include = true;
+	allow_include    = true;
+	delete_all_white = false;
 }
 
 
@@ -237,13 +238,40 @@ return *(itext++);
 }
 
 
+bool Pattern::IsWhite(int c )
+{
+	if( c==' ' || c=='\t' || c==13 )
+		return true;
+
+return false;
+}
+
+
 void Pattern::SkipWhiteCharacters()
 {
-	while( *itext==' ' || *itext=='\t' )
+	while( IsWhite(*itext) )
 		++itext;
 }
 
 
+void Pattern::CheckWhiteAndDelete(std::string & s)
+{
+std::string::size_type i;
+	
+	if( s.empty() )
+		return;
+
+	for(i=0 ; i<s.size() && (s[i]==10 || IsWhite(s[i])) ; ++i);
+
+	if( i<s.size() )
+		// there are other characters in the string
+		return;
+
+	s.clear();
+}
+
+
+
 std::string Pattern::ReadDirective()
 {
 std::string directive;
@@ -518,6 +546,9 @@ int c;
 	while( (c = ReadCharInText()) != -1 )
 		item.text += c;
 
+	if( delete_all_white )
+		CheckWhiteAndDelete(item.text);
+
 	item.type = Item::item_text;
 }
 
@@ -1198,7 +1229,7 @@ void Generator::MakeTextDefine(Pattern::Item & item)
 
 void Generator::MakeText(Pattern::Item & item)
 {
-	const int max_loop = 10000;
+	const int max_loop = 30000;
 	
 	if( loop == -1 )
 		return;
diff --git a/src/ezc.h b/src/ezc.h
index 4809228..d425e08 100644
--- a/src/ezc.h
+++ b/src/ezc.h
@@ -111,8 +111,17 @@ public:
 
 	Item item_root;
 
+	// allowing include tag
+	// default: true
 	bool allow_include;
 
+	// if true all text-items which have only white characters (with new lines as well)
+	// will be deleted - useful in *.txt templates
+	// this not actually delete the whole item but only the string
+	// the item will be present with an empty string
+	// default: false
+	bool delete_all_white;
+
 private:
 	const char * itext;
 	std::string directory;
@@ -122,8 +131,10 @@ private:
 	std::string ReadFile(const char * name);
 
 	int  ReadCharInText();
+	bool IsWhite(int c);
 	void SkipWhiteCharacters();
-
+	void CheckWhiteAndDelete(std::string & s);
+	
 	std::string ReadDirective();
 	std::string ReadString(bool skip_first_quote = false);
 	std::string ReadDirectiveOrString();