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epee: some speedup in parsing

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moneromooo-monero 2018-08-16 18:15:47 +00:00
parent 29dea03091
commit 76affd941b
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GPG key ID: 686F07454D6CEFC3
1 changed files with 8 additions and 1 deletions
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9
contrib/epee/include/storages/parserse_base_utils.h
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@ -28,6 +28,8 @@
#pragma once #pragma once
#include <algorithm>
namespace epee namespace epee
{ {
namespace misc_utils namespace misc_utils
@ -36,8 +38,12 @@ namespace misc_utils
{ {
inline std::string transform_to_escape_sequence(const std::string& src) inline std::string transform_to_escape_sequence(const std::string& src)
{ {
//std::stringstream res; static const char escaped[] = "\b\f\n\r\t\v\"\\/";
if (std::find_first_of(src.begin(), src.end(), escaped, escaped + sizeof(escaped)) == src.end())
return src;
std::string res; std::string res;
res.reserve(2 * src.size());
for(std::string::const_iterator it = src.begin(); it!=src.end(); ++it) for(std::string::const_iterator it = src.begin(); it!=src.end(); ++it)
{ {
switch(*it) switch(*it)
@ -84,6 +90,7 @@ namespace misc_utils
inline void match_string2(std::string::const_iterator& star_end_string, std::string::const_iterator buf_end, std::string& val) inline void match_string2(std::string::const_iterator& star_end_string, std::string::const_iterator buf_end, std::string& val)
{ {
val.clear(); val.clear();
val.reserve(std::distance(star_end_string, buf_end));
bool escape_mode = false; bool escape_mode = false;
std::string::const_iterator it = star_end_string; std::string::const_iterator it = star_end_string;
++it; ++it;