From fcf2dde54316a3ac35936157babccae8c8d8d90b Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Fri, 18 Mar 2011 03:48:35 +0000
Subject: The inline, printf/qstring style formatting for Bu::String is just
 about there, it just needs to be integrated with the Bu::String class itself,
 pretty exciting.

---
 src/tools/format.cpp | 44 ++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 40 insertions(+), 4 deletions(-)

(limited to 'src/tools/format.cpp')

diff --git a/src/tools/format.cpp b/src/tools/format.cpp
index 6a2f3bd..6aa4c56 100644
--- a/src/tools/format.cpp
+++ b/src/tools/format.cpp
@@ -4,6 +4,8 @@
 #include <bu/variant.h>
 #include <bu/membuf.h>
 
+#include <stdlib.h>
+
 using namespace Bu;
 
 class Fmter
@@ -32,15 +34,47 @@ public:
 
 	operator Bu::String() const
 	{
+		int iCount = lParm.getSize();
+		ParmList::const_iterator *aParm =
+			new ParmList::const_iterator[iCount];
+		{
+			int j = 0;
+			for( ParmList::const_iterator i = lParm.begin(); i; i++, j++ )
+			{
+				aParm[j] = i;
+			}
+		}
 		Bu::MemBuf mbOut;
 		Bu::Formatter f( mbOut );
-		ParmList::const_iterator i = lParm.begin();
 		for( Bu::String::const_iterator s = sSrc.begin(); s; s++ )
 		{
 			if( *s == '%' )
 			{
-				f << (*i).format << (*i).value;
-				i++;
+				s++;
+				if( *s == '%' )
+					f << *s;
+				else
+				{
+					Bu::String sNum;
+					while( s && *s >= '0' && *s <= '9' )
+					{
+						sNum += *s;
+						s++;
+					}
+					int iIndex = strtol( sNum.getStr(), 0, 10 )-1;
+					if( iIndex < 0 || iIndex >= iCount )
+					{
+						delete[] aParm;
+						throw Bu::ExceptionBase(
+							"Argument index %d is outside of "
+							"valid range (1-%d).", iIndex+1, iCount
+							);
+					}
+
+					f << (*aParm[iIndex]).format << (*aParm[iIndex]).value;
+					if( s )
+						f << *s;
+				}
 			}
 			else
 			{
@@ -48,6 +82,7 @@ public:
 			}
 		}
 
+		delete[] aParm;
 		return mbOut.getString();
 	}
 
@@ -83,6 +118,7 @@ Bu::Formatter &operator<<( Bu::Formatter &f, const Fmter &r )
 
 int main()
 {
-	sio << Fmter("A word is % and a number is % %.").arg("Hello").arg(75, Fmt::hex() ).arg(" - ") << sio.nl;
+	sio << Fmter("A word is %1 and a number is %2 %1").
+		arg("Hello").arg(75, Fmt::hex() ).arg(" - ") << sio.nl;
 }
 
-- 
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