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build/stlport/src/num_get.cpp@6474c204b198 (annotated)

build/stlport/src/num_get.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/*
michael@0	2	* Copyright (c) 1999
michael@0	3	* Silicon Graphics Computer Systems, Inc.
michael@0	4	*
michael@0	5	* Copyright (c) 1999
michael@0	6	* Boris Fomitchev
michael@0	7	*
michael@0	8	* This material is provided "as is", with absolutely no warranty expressed
michael@0	9	* or implied. Any use is at your own risk.
michael@0	10	*
michael@0	11	* Permission to use or copy this software for any purpose is hereby granted
michael@0	12	* without fee, provided the above notices are retained on all copies.
michael@0	13	* Permission to modify the code and to distribute modified code is granted,
michael@0	14	* provided the above notices are retained, and a notice that the code was
michael@0	15	* modified is included with the above copyright notice.
michael@0	16	*
michael@0	17	*/
michael@0	18	#include "stlport_prefix.h"
michael@0	19
michael@0	20	#include <locale>
michael@0	21	#include <istream>
michael@0	22	#include <algorithm>
michael@0	23
michael@0	24	_STLP_BEGIN_NAMESPACE
michael@0	25	_STLP_MOVE_TO_PRIV_NAMESPACE
michael@0	26
michael@0	27	// __valid_grouping compares two strings, one representing the
michael@0	28	// group sizes encountered when reading an integer, and the other
michael@0	29	// representing the valid group sizes as returned by the numpunct
michael@0	30	// grouping() member function. Both are interpreted right-to-left.
michael@0	31	// The grouping string is treated as if it were extended indefinitely
michael@0	32	// with its last value. For a grouping to be valid, each term in
michael@0	33	// the first string must be equal to the corresponding term in the
michael@0	34	// second, except for the last, which must be less than or equal.
michael@0	35
michael@0	36	// boris : this takes reversed first string !
michael@0	37	bool _STLP_CALL
michael@0	38	__valid_grouping(const char * first1, const char * last1,
michael@0	39	const char * first2, const char * last2) {
michael@0	40	if (first1 == last1 || first2 == last2) return true;
michael@0	41
michael@0	42	--last1; --last2;
michael@0	43
michael@0	44	while (first1 != last1) {
michael@0	45	if (*last1 != *first2)
michael@0	46	return false;
michael@0	47	--last1;
michael@0	48	if (first2 != last2) ++first2;
michael@0	49	}
michael@0	50
michael@0	51	return *last1 <= *first2;
michael@0	52	}
michael@0	53
michael@0	54	_STLP_DECLSPEC unsigned char _STLP_CALL __digit_val_table(unsigned __index) {
michael@0	55	static const unsigned char __val_table[128] = {
michael@0	56	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	57	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	58	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	59	0, 1, 2, 3, 4, 5, 6, 7, 8, 9,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	60	0xFF,10,11,12,13,14,15,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	61	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	62	0xFF,10,11,12,13,14,15,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
michael@0	63	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
michael@0	64	};
michael@0	65
michael@0	66	return __val_table[__index];
michael@0	67	}
michael@0	68
michael@0	69	_STLP_DECLSPEC const char* _STLP_CALL __narrow_atoms()
michael@0	70	{ return "+-0xX"; }
michael@0	71
michael@0	72	// index is actually a char
michael@0	73
michael@0	74	#if !defined (_STLP_NO_WCHAR_T)
michael@0	75
michael@0	76	// Similar, except return the character itself instead of the numeric
michael@0	77	// value. Used for floating-point input.
michael@0	78	bool _STLP_CALL __get_fdigit(wchar_t& c, const wchar_t* digits) {
michael@0	79	const wchar_t* p = find(digits, digits + 10, c);
michael@0	80	if (p != digits + 10) {
michael@0	81	c = (char)('0' + (p - digits));
michael@0	82	return true;
michael@0	83	}
michael@0	84	else
michael@0	85	return false;
michael@0	86	}
michael@0	87
michael@0	88	bool _STLP_CALL __get_fdigit_or_sep(wchar_t& c, wchar_t sep,
michael@0	89	const wchar_t * digits) {
michael@0	90	if (c == sep) {
michael@0	91	c = (char)',';
michael@0	92	return true;
michael@0	93	}
michael@0	94	else
michael@0	95	return __get_fdigit(c, digits);
michael@0	96	}
michael@0	97
michael@0	98	#endif
michael@0	99
michael@0	100	_STLP_MOVE_TO_STD_NAMESPACE
michael@0	101
michael@0	102	#if !defined(_STLP_NO_FORCE_INSTANTIATE)
michael@0	103	//----------------------------------------------------------------------
michael@0	104	// Force instantiation of num_get<>
michael@0	105	template class _STLP_CLASS_DECLSPEC istreambuf_iterator<char, char_traits<char> >;
michael@0	106	// template class num_get<char, const char*>;
michael@0	107	template class num_get<char, istreambuf_iterator<char, char_traits<char> > >;
michael@0	108
michael@0	109	# if !defined (_STLP_NO_WCHAR_T)
michael@0	110	template class _STLP_CLASS_DECLSPEC istreambuf_iterator<wchar_t, char_traits<wchar_t> >;
michael@0	111	template class num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
michael@0	112	// template class num_get<wchar_t, const wchar_t*>;
michael@0	113	# endif
michael@0	114	#endif
michael@0	115
michael@0	116	_STLP_END_NAMESPACE
michael@0	117
michael@0	118	// Local Variables:
michael@0	119	// mode:C++
michael@0	120	// End: