diff options
author | Chris Dyer <cdyer@cs.cmu.edu> | 2012-02-29 01:12:40 -0500 |
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committer | Chris Dyer <cdyer@cs.cmu.edu> | 2012-02-29 01:12:40 -0500 |
commit | 54bcfb835232d190a5ab6f0bd825de8a50dae126 (patch) | |
tree | 161988135be75a47524cdf2efbba7bdf06c9bd65 /utils/string_to.h | |
parent | 89238977fc9d8f8d9a6421b0d4f35afc200f08e7 (diff) |
cleanup, mpi-ify lblmodel
Diffstat (limited to 'utils/string_to.h')
-rw-r--r-- | utils/string_to.h | 314 |
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 |