From d652a84f4b10251af9e9d216e5642506047cdb29 Mon Sep 17 00:00:00 2001
From: Enrico Forestieri <forenr@lyx.org>
Date: Thu, 4 Feb 2010 23:03:48 +0000
Subject: [PATCH] Automate the setting of the ascii only flag.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33328 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/mathed/CommandInset.cpp |  5 +----
 src/mathed/MathFactory.cpp  |  9 ++++++---
 src/mathed/MathStream.h     | 20 +++++++++++++++-----
 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/src/mathed/CommandInset.cpp b/src/mathed/CommandInset.cpp
index c5448a21fc..6ed32754d4 100644
--- a/src/mathed/CommandInset.cpp
+++ b/src/mathed/CommandInset.cpp
@@ -65,15 +65,12 @@ void CommandInset::draw(PainterInfo & pi, int x, int y) const
 
 void CommandInset::write(WriteStream & os) const
 {
-	ModeSpecifier specifier(os, currentMode(), lockedMode());
+	ModeSpecifier specifier(os, currentMode(), lockedMode(), asciiOnly());
 	MathEnsurer ensurer(os, needs_math_mode_);
-	bool const ascii = os.asciiOnly();
-	os.asciiOnly(asciiOnly());
 	os << '\\' << name_;
 	if (cell(1).size())
 		os << '[' << cell(1) << ']';
 	os << '{' << cell(0) << '}';
-	os.asciiOnly(ascii);
 }
 
 
diff --git a/src/mathed/MathFactory.cpp b/src/mathed/MathFactory.cpp
index eae3777065..2a32e9397f 100644
--- a/src/mathed/MathFactory.cpp
+++ b/src/mathed/MathFactory.cpp
@@ -278,7 +278,8 @@ bool ensureMath(WriteStream & os, bool needs_math_mode, bool macro)
 }
 
 
-int ensureMode(WriteStream & os, InsetMath::mode_type mode, bool locked)
+int ensureMode(WriteStream & os, InsetMath::mode_type mode,
+		bool locked, bool ascii)
 {
 	bool textmode = mode == InsetMath::TEXT_MODE;
 	if (os.latex() && textmode && os.pendingBrace()) {
@@ -287,10 +288,12 @@ int ensureMode(WriteStream & os, InsetMath::mode_type mode, bool locked)
 		os.pendingSpace(false);
 		os.textMode(true);
 	}
-	int oldmodes = os.textMode() ? 1 : 0;
+	int oldmodes = os.textMode() ? 0x01 : 0;
 	os.textMode(textmode);
-	oldmodes |= os.lockedMode() ? 2 : 0;
+	oldmodes |= os.lockedMode() ? 0x02 : 0;
 	os.lockedMode(locked);
+	oldmodes |= os.asciiOnly() ? 0x04 : 0;
+	os.asciiOnly(ascii);
 	return oldmodes;
 }
 
diff --git a/src/mathed/MathStream.h b/src/mathed/MathStream.h
index 5eb2f8de2f..6fb8f8265f 100644
--- a/src/mathed/MathStream.h
+++ b/src/mathed/MathStream.h
@@ -127,7 +127,7 @@ WriteStream & operator<<(WriteStream &, unsigned int);
 bool ensureMath(WriteStream & os, bool needs_math_mode = true, bool macro = false);
 
 /// ensure the requested mode, possibly by closing \ensuremath
-int ensureMode(WriteStream & os, InsetMath::mode_type mode, bool locked);
+int ensureMode(WriteStream & os, InsetMath::mode_type mode, bool locked, bool ascii);
 
 
 /**
@@ -191,6 +191,8 @@ private:
  * the mode needs being temporarily switched when a command would not work
  * in the current mode. As there are cases where this switching is to be
  * avoided, the optional third parameter can be used to lock the mode.
+ * When the mode is locked, the optional fourth parameter specifies whether
+ * strings are to be output by using a suitable ascii representation.
  *
  * Example 1:
  *
@@ -204,6 +206,13 @@ private:
  *
  * Sets the current mode to text mode and disallows mode switching.
  *
+ * Example 3:
+ *
+ *      ModeSpecifier specifier(os, TEXT_MODE, true, true);
+ *
+ * Sets the current mode to text mode, disallows mode switching, and outputs
+ * strings as ascii only.
+ *
  * At the end of specifier's scope the mode is reset to its previous value.
  */
 class ModeSpecifier
@@ -211,13 +220,14 @@ class ModeSpecifier
 public:
 	///
 	explicit ModeSpecifier(WriteStream & os, InsetMath::mode_type mode,
-				bool locked = false)
-		: os_(os), oldmodes_(ensureMode(os, mode, locked)) {}
+				bool locked = false, bool ascii = false)
+		: os_(os), oldmodes_(ensureMode(os, mode, locked, ascii)) {}
 	///
 	~ModeSpecifier()
 	{
-		os_.textMode(oldmodes_ & 1);
-		os_.lockedMode(oldmodes_ & 2);
+		os_.textMode(oldmodes_ & 0x01);
+		os_.lockedMode(oldmodes_ & 0x02);
+		os_.asciiOnly(oldmodes_ & 0x04);
 	}
 private:
 	///
-- 
2.39.2