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-rw-r--r--utils/string_to.h314
1 files changed, 0 insertions, 314 deletions
diff --git a/utils/string_to.h b/utils/string_to.h
deleted file mode 100644
index c78a5394..00000000
--- a/utils/string_to.h
+++ /dev/null
@@ -1,314 +0,0 @@
-#ifndef STRING_TO_H
-#define STRING_TO_H
-
-/*
- may not be any faster than boost::lexical_cast in later incarnations (see http://accu.org/index.php/journals/1375)
- but is slightly simpler. no wide char or locale.
-
- X string_to<X>(string);
- string to_string(X);
- X& string_into(string,X &); // note: returns the same ref you passed in, for convenience of use
-
- default implementation via stringstreams (quite slow, I'm sure)
-
- fast implementation for string, int<->string, unsigned<->string, float<->string, double<->string
-
-*/
-
-#ifndef USE_FTOA
-#define USE_FTOA 1
-#endif
-#ifndef HAVE_STRTOUL
-# define HAVE_STRTOUL 1
-#endif
-
-#include <string>
-#include <sstream>
-#include <stdexcept>
-#include <cstdlib>
-
-#include "have_64_bits.h"
-#include "utoa.h"
-#if USE_FTOA
-# include "ftoa.h"
-#endif
-
-namespace {
-// for faster numeric to/from string. TODO: separate into optional header
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h> // access to evil (fast) C isspace etc.
-#include <limits.h> //strtoul
-}
-
-inline void throw_string_to(std::string const& msg,char const* prefix="string_to: ") {
- throw std::runtime_error(prefix+msg);
-}
-
-template <class I,class To>
-bool try_stream_into(I & i,To &to,bool complete=true)
-{
- i >> to;
- if (i.fail()) return false;
- if (complete) {
- char c;
- return !(i >> c);
- }
- return true;
-}
-
-template <class Str,class To>
-bool try_string_into(Str const& str,To &to,bool complete=true)
-{
- std::istringstream i(str);
- return try_stream_into(i,to,complete);
-}
-
-template <class Str,class Data> inline
-Data & string_into(const Str &str,Data &data)
-{
- if (!try_string_into(str,data))
- throw std::runtime_error(std::string("Couldn't convert (string_into): ")+str);
- return data;
-}
-
-
-template <class Data,class Str> inline
-Data string_to(const Str &str)
-{
- Data ret;
- string_into(str,ret);
- return ret;
-}
-
-template <class D> inline
-std::string to_string(D const &d)
-{
- std::ostringstream o;
- o << d;
- return o.str();
-}
-
-inline std::string to_string(unsigned x) {
- return utos(x);
-}
-
-inline std::string to_string(int x) {
- return itos(x);
-}
-
-inline long strtol_complete(char const* s,int base=10) {
- char *e;
- if (*s) {
- long r=strtol(s,&e,base);
- char c=*e;
- if (!c || isspace(c)) //simplifying assumption: we're happy if there's other stuff in the string, so long as the number ends in a space or eos. TODO: loop consuming spaces until end?
- return r;
- }
- throw_string_to(s,"Couldn't convert to integer: ");
-}
-
-// returns -INT_MAX or INT_MAX if number is too large/small
-inline int strtoi_complete_bounded(char const* s,int base=10) {
- long l=strtol_complete(s,base);
- if (l<std::numeric_limits<int>::min())
- return std::numeric_limits<int>::min();
- if (l>std::numeric_limits<int>::max())
- return std::numeric_limits<int>::max();
- return l;
-}
-#define RANGE_STR(x) #x
-#ifdef INT_MIN
-# define INTRANGE_STR "[" RANGE_STR(INT_MIN) "," RANGE_STR(INT_MAX) "]"
-#else
-# define INTRANGE_STR "[-2137483648,2147483647]"
-#endif
-
- // throw if out of int range
-inline int strtoi_complete_exact(char const* s,int base=10) {
- long l=strtol_complete(s,base);
- if (l<std::numeric_limits<int>::min() || l>std::numeric_limits<int>::max())
- throw_string_to(s,"Out of range for int " INTRANGE_STR ": ");
- return l;
-}
-
-#if HAVE_LONGER_LONG
-inline int& string_into(std::string const& s,int &x) {
- x=strtoi_complete_exact(s.c_str());
- return x;
-}
-inline int& string_into(char const* s,int &x) {
- x=strtoi_complete_exact(s);
- return x;
-}
-#endif
-
-inline long& string_into(std::string const& s,long &x) {
- x=strtol_complete(s.c_str());
- return x;
-}
-inline long& string_into(char const* s,long &x) {
- x=strtol_complete(s);
- return x;
-}
-
-
-//FIXME: preprocessor separation for tokens int<->unsigned int, long<->unsigned long, strtol<->strtoul ? massive code duplication
-inline unsigned long strtoul_complete(char const* s,int base=10) {
- char *e;
- if (*s) {
-#if HAVE_STRTOUL
- unsigned long r=strtoul(s,&e,base);
-#else
-// unsigned long r=strtol(s,&e,base); //FIXME: not usually safe
- unsigned long r;
- sscanf(s,"%ul",&r);
-#endif
- char c=*e;
- if (!c || isspace(c)) //simplifying assumption: we're happy if there's other stuff in the string, so long as the number ends in a space or eos. TODO: loop consuming spaces until end?
- return r;
- }
- throw_string_to(s,"Couldn't convert to integer: ");
-}
-
-inline unsigned strtou_complete_bounded(char const* s,int base=10) {
- unsigned long l=strtoul_complete(s,base);
- if (l<std::numeric_limits<unsigned>::min())
- return std::numeric_limits<unsigned>::min();
- if (l>std::numeric_limits<unsigned>::max())
- return std::numeric_limits<unsigned>::max();
- return l;
-}
-
-#ifdef UINT_MIN
-# define UINTRANGE_STR "[" RANGE_STR(UINT_MIN) "," RANGE_STR(UINT_MAX) "]"
-#else
-# define UINTRANGE_STR "[0,4,294,967,295]"
-#endif
-
- // throw if out of int range
-inline unsigned strtou_complete_exact(char const* s,int base=10) {
- unsigned long l=strtoul_complete(s,base);
- if (l<std::numeric_limits<unsigned>::min() || l>std::numeric_limits<unsigned>::max())
- throw_string_to(s,"Out of range for uint " UINTRANGE_STR ": ");
- return l;
-}
-
-#if HAVE_LONGER_LONG
-inline unsigned& string_into(std::string const& s,unsigned &x) {
- x=strtou_complete_exact(s.c_str());
- return x;
-}
-inline unsigned& string_into(char const* s,unsigned &x) {
- x=strtou_complete_exact(s);
- return x;
-}
-#endif
-
-inline unsigned long& string_into(std::string const& s,unsigned long &x) {
- x=strtoul_complete(s.c_str());
- return x;
-}
-inline unsigned long& string_into(char const* s,unsigned long &x) {
- x=strtoul_complete(s);
- return x;
-}
-
-//FIXME: end code duplication
-
-
-/* 9 decimal places needed to avoid rounding error in float->string->float. 17 for double->string->double
- in terms of usable decimal places, there are 6 for float and 15 for double
- */
-inline std::string to_string_roundtrip(float x) {
- char buf[17];
- return std::string(buf,buf+sprintf(buf,"%.9g",x));
-}
-inline std::string to_string(float x) {
-#if USE_FTOA
- return ftos(x);
-#else
- char buf[15];
- return std::string(buf,buf+sprintf(buf,"%.7g",x));
-#endif
-}
-inline std::string to_string_roundtrip(double x) {
- char buf[32];
- return std::string(buf,buf+sprintf(buf,"%.17g",x));
-}
-inline std::string to_string(double x) {
-#if USE_FTOA
- return ftos(x);
-#else
- char buf[30];
- return std::string(buf,buf+sprintf(buf,"%.15g",x));
-#endif
-}
-
-inline double& string_into(char const* s,double &x) {
- x=std::atof(s);
- return x;
-}
-inline float& string_into(char const* s,float &x) {
- x=std::atof(s);
- return x;
-}
-
-inline double& string_into(std::string const& s,double &x) {
- x=std::atof(s.c_str());
- return x;
-}
-inline float& string_into(std::string const& s,float &x) {
- x=std::atof(s.c_str());
- return x;
-}
-
-
-template <class Str>
-bool try_string_into(Str const& str,Str &to,bool complete=true)
-{
- str=to;
- return true;
-}
-
-inline std::string const& to_string(std::string const& d)
-{
- return d;
-}
-
-template <class Str>
-Str const& string_to(Str const &s)
-{
- return s;
-}
-
-template <class Str>
-Str & string_into(Str const &s,Str &d)
-{
- return d=s;
-}
-
-/*
-
-template <class Str,class Data,class size_type> inline
-void substring_into(const Str &str,size_type pos,size_type n,Data &data)
-{
-// std::istringstream i(str,pos,n); // doesn't exist!
- std::istringstream i(str.substr(pos,n));
- if (!(i>>*data))
- throw std::runtime_error("Couldn't convert (string_into): "+str);
-}
-
-template <class Data,class Str,class size_type> inline
-Data string_to(const Str &str,size_type pos,size_type n)
-{
- Data ret;
- substring_into(str,pos,n,ret);
- return ret;
-}
-
-*/
-
-
-
-#endif
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