From 050ddfb3f3236fd03c72f7dc936332eed6b3997f Mon Sep 17 00:00:00 2001
From: Vitaly Stakhovsky <vvs31415@gitlab.org>
Date: Tue, 3 Apr 2018 17:28:08 -0400
Subject: cmXMLWriter: code improvement

New Indent member will be used for XML indentation
---
 Source/cmXMLWriter.cxx | 29 ++++++++++++++++-------------
 Source/cmXMLWriter.h   |  3 ++-
 2 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/Source/cmXMLWriter.cxx b/Source/cmXMLWriter.cxx
index 3cbc70d..9d2a3c4 100644
--- a/Source/cmXMLWriter.cxx
+++ b/Source/cmXMLWriter.cxx
@@ -9,6 +9,7 @@ cmXMLWriter::cmXMLWriter(std::ostream& output, std::size_t level)
   : Output(output)
   , IndentationElement(1, '\t')
   , Level(level)
+  , Indent(0)
   , ElementOpen(false)
   , BreakAttrib(false)
   , IsContent(false)
@@ -17,7 +18,7 @@ cmXMLWriter::cmXMLWriter(std::ostream& output, std::size_t level)
 
 cmXMLWriter::~cmXMLWriter()
 {
-  assert(this->Elements.empty());
+  assert(this->Indent == 0);
 }
 
 void cmXMLWriter::StartDocument(const char* encoding)
@@ -27,27 +28,29 @@ void cmXMLWriter::StartDocument(const char* encoding)
 
 void cmXMLWriter::EndDocument()
 {
-  assert(this->Elements.empty());
+  assert(this->Indent == 0);
   this->Output << '\n';
 }
 
 void cmXMLWriter::StartElement(std::string const& name)
 {
   this->CloseStartElement();
-  this->ConditionalLineBreak(!this->IsContent, this->Elements.size());
+  this->ConditionalLineBreak(!this->IsContent);
   this->Output << '<' << name;
   this->Elements.push(name);
+  ++this->Indent;
   this->ElementOpen = true;
   this->BreakAttrib = false;
 }
 
 void cmXMLWriter::EndElement()
 {
-  assert(!this->Elements.empty());
+  assert(this->Indent > 0);
+  --this->Indent;
   if (this->ElementOpen) {
     this->Output << "/>";
   } else {
-    this->ConditionalLineBreak(!this->IsContent, this->Elements.size() - 1);
+    this->ConditionalLineBreak(!this->IsContent);
     this->IsContent = false;
     this->Output << "</" << this->Elements.top() << '>';
   }
@@ -58,7 +61,7 @@ void cmXMLWriter::EndElement()
 void cmXMLWriter::Element(const char* name)
 {
   this->CloseStartElement();
-  this->ConditionalLineBreak(!this->IsContent, this->Elements.size());
+  this->ConditionalLineBreak(!this->IsContent);
   this->Output << '<' << name << "/>";
 }
 
@@ -70,7 +73,7 @@ void cmXMLWriter::BreakAttributes()
 void cmXMLWriter::Comment(const char* comment)
 {
   this->CloseStartElement();
-  this->ConditionalLineBreak(!this->IsContent, this->Elements.size());
+  this->ConditionalLineBreak(!this->IsContent);
   this->Output << "<!-- " << comment << " -->";
 }
 
@@ -83,14 +86,14 @@ void cmXMLWriter::CData(std::string const& data)
 void cmXMLWriter::Doctype(const char* doctype)
 {
   this->CloseStartElement();
-  this->ConditionalLineBreak(!this->IsContent, this->Elements.size());
+  this->ConditionalLineBreak(!this->IsContent);
   this->Output << "<!DOCTYPE " << doctype << ">";
 }
 
 void cmXMLWriter::ProcessingInstruction(const char* target, const char* data)
 {
   this->CloseStartElement();
-  this->ConditionalLineBreak(!this->IsContent, this->Elements.size());
+  this->ConditionalLineBreak(!this->IsContent);
   this->Output << "<?" << target << ' ' << data << "?>";
 }
 
@@ -106,11 +109,11 @@ void cmXMLWriter::SetIndentationElement(std::string const& element)
   this->IndentationElement = element;
 }
 
-void cmXMLWriter::ConditionalLineBreak(bool condition, std::size_t indent)
+void cmXMLWriter::ConditionalLineBreak(bool condition)
 {
   if (condition) {
     this->Output << '\n';
-    for (std::size_t i = 0; i < indent + this->Level; ++i) {
+    for (std::size_t i = 0; i < this->Indent + this->Level; ++i) {
       this->Output << this->IndentationElement;
     }
   }
@@ -119,7 +122,7 @@ void cmXMLWriter::ConditionalLineBreak(bool condition, std::size_t indent)
 void cmXMLWriter::PreAttribute()
 {
   assert(this->ElementOpen);
-  this->ConditionalLineBreak(this->BreakAttrib, this->Elements.size());
+  this->ConditionalLineBreak(this->BreakAttrib);
   if (!this->BreakAttrib) {
     this->Output << ' ';
   }
@@ -134,7 +137,7 @@ void cmXMLWriter::PreContent()
 void cmXMLWriter::CloseStartElement()
 {
   if (this->ElementOpen) {
-    this->ConditionalLineBreak(this->BreakAttrib, this->Elements.size());
+    this->ConditionalLineBreak(this->BreakAttrib);
     this->Output << '>';
     this->ElementOpen = false;
   }
diff --git a/Source/cmXMLWriter.h b/Source/cmXMLWriter.h
index 80940ee..ff0df18 100644
--- a/Source/cmXMLWriter.h
+++ b/Source/cmXMLWriter.h
@@ -67,7 +67,7 @@ public:
   void SetIndentationElement(std::string const& element);
 
 private:
-  void ConditionalLineBreak(bool condition, std::size_t indent);
+  void ConditionalLineBreak(bool condition);
 
   void PreAttribute();
   void PreContent();
@@ -128,6 +128,7 @@ private:
   std::stack<std::string, std::vector<std::string>> Elements;
   std::string IndentationElement;
   std::size_t Level;
+  std::size_t Indent;
   bool ElementOpen;
   bool BreakAttrib;
   bool IsContent;
-- 
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