Open-Harbor/osrm-backend
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 3 Wiki Activity

replacing stringstream by plain string is faster

Browse Source
This commit is contained in:
Dennis Luxen 2011-07-29 16:41:32 +00:00
parent a816630f2f
commit 29fb07446a
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
DataStructures/PolylineCompressor.h
View File

@ -21,6 +21,8 @@ or see http://www.gnu.org/licenses/agpl.txt.
#ifndef POLYLINECOMPRESSOR_H_ #ifndef POLYLINECOMPRESSOR_H_
#define POLYLINECOMPRESSOR_H_ #define POLYLINECOMPRESSOR_H_
#include <string>
#include "ExtractorStructs.h" #include "ExtractorStructs.h"
class PolylineCompressor { class PolylineCompressor {
@ -34,18 +36,18 @@ private:
} }
inline string encodeNumber(int numberToEncode) const { inline string encodeNumber(int numberToEncode) const {
ostringstream encodeString; string encodeString;
while (numberToEncode >= 0x20) { while (numberToEncode >= 0x20) {
int nextValue = (0x20 | (numberToEncode & 0x1f)) + 63; int nextValue = (0x20 | (numberToEncode & 0x1f)) + 63;
encodeString << (static_cast<char> (nextValue)); encodeString += (static_cast<char> (nextValue));
numberToEncode >>= 5; numberToEncode >>= 5;
} }
numberToEncode += 63; numberToEncode += 63;
encodeString << (static_cast<char> (numberToEncode)); encodeString += (static_cast<char> (numberToEncode));
return encodeString.str(); return encodeString;
} }
inline void replaceBackslash(string & str) { inline void replaceBackslash(string & str) {