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epoc32/include/stdapis/stlport/stl/_string_io.c
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:33:34 +0100
branchSymbian3
changeset 4 837f303aceeb
permissions -rw-r--r--
Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed. 
     1 /* Portion Copyright © 2008-09 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. */

     2 

     3 

     4 #ifndef _STLP_STRING_IO_C

     5 #define _STLP_STRING_IO_C

     6 

     7 #ifndef _STLP_STRING_IO_H

     8 # include <stl/_string_io.h>

     9 #endif

    10 

    11 #ifndef _STLP_INTERNAL_CTYPE_H

    12 # include <stl/_ctype.h>

    13 #endif

    14 

    15 # ifdef _STLP_DEBUG

    16 #  define basic_string _Nondebug_string

    17 # endif

    18 

    19 _STLP_BEGIN_NAMESPACE

    20 

    21 # if defined (_STLP_OWN_IOSTREAMS)

    22 #  define _STLP_USING_IO

    23 # else

    24 #  define _STLP_USING_IO _STLP_USING_VENDOR_STD

    25 # endif

    26 

    27 #if defined (_STLP_USE_NEW_IOSTREAMS)

    28 

    29 template <class _CharT, class _Traits>

    30 bool _STLP_CALL

    31 __stlp_string_fill(basic_ostream<_CharT, _Traits>& __os,

    32                   basic_streambuf<_CharT, _Traits>* __buf,

    33                   size_t __n)

    34 {

    35   _CharT __f = __os.fill();

    36   size_t __i;

    37   bool __ok = true;

    38 

    39   for (__i = 0; __i < __n; ++__i)

    40     __ok = __ok && !_Traits::eq_int_type(__buf->sputc(__f), _Traits::eof());

    41   return __ok;

    42 }

    43 

    44 template <class _CharT, class _Traits, class _Alloc>

    45 basic_ostream<_CharT, _Traits>& _STLP_CALL

    46 operator<<(basic_ostream<_CharT, _Traits>& __os, 

    47            const basic_string<_CharT,_Traits,_Alloc>& __s)

    48 {

    49 

    50   _STLP_USING_IO

    51   typedef basic_ostream<_CharT, _Traits> __ostream;

    52   typename __ostream::sentry __sentry(__os);

    53   bool __ok = false;

    54 

    55   if (__sentry) {

    56     __ok = true;

    57     size_t __n = __s.size();

    58     size_t __pad_len = 0;

    59     const bool __left = (__os.flags() & __ostream::left) != 0;

    60     const size_t __w = __os.width(0);

    61     basic_streambuf<_CharT, _Traits>* __buf = __os.rdbuf();

    62 

    63     if (__n < __w) {

    64       __pad_len = __w - __n;

    65     }

    66     

    67     if (!__left)

    68       __ok = __stlp_string_fill(__os, __buf, __pad_len);    

    69 

    70     __ok = __ok && (__buf->sputn(__s.data(), streamsize(__n)) == streamsize(__n));

    71 

    72     if (__left)

    73       __ok = __ok && __stlp_string_fill(__os, __buf, __pad_len);

    74   }

    75 

    76   if (!__ok)

    77     __os.setstate(__ostream::failbit);

    78 

    79   return __os;

    80 }

    81  

    82 template <class _CharT, class _Traits, class _Alloc>

    83 basic_istream<_CharT, _Traits>& _STLP_CALL 

    84 operator>>(basic_istream<_CharT, _Traits>& __is,

    85            basic_string<_CharT,_Traits, _Alloc>& __s)

    86 {

    87   _STLP_USING_IO

    88   typedef basic_istream<_CharT, _Traits> __istream;

    89   typename __istream::sentry __sentry(__is);

    90 

    91   if (__sentry) {

    92     basic_streambuf<_CharT, _Traits>* __buf = __is.rdbuf();

    93     typedef ctype<_CharT> _C_type;

    94 

    95 #ifdef _STLP_OWN_IOSTREAMS

    96     //    const _C_type& _Ctype = use_facet<_C_type>(__loc);

    97     const _C_type& _Ctype = *(const _C_type*)__is._M_ctype_facet();

    98 #else

    99 # if defined (_STLP_MSVC) && (_STLP_MSVC <= 1200 ) || defined (__ICL)

   100     const locale& __loc = __is.getloc();

   101     const _C_type& _Ctype = use_facet(__loc , ( _C_type * ) 0, true);

   102 # elif defined (__SUNPRO_CC)

   103     const locale& __loc = __is.getloc();

   104     const _C_type& _Ctype = use_facet(__loc , ( _C_type * ) 0);

   105 # else

   106     const locale& __loc = __is.getloc();

   107     const _C_type& _Ctype = use_facet<_C_type>(__loc);

   108 # endif

   109 #endif

   110     __s.clear();

   111     size_t __n = __is.width(0);

   112     if (__n == 0)

   113       __n = __STATIC_CAST(size_t,-1);

   114     else

   115       __s.reserve(__n);

   116     

   117 

   118     while (__n-- > 0) {

   119       typename _Traits::int_type __c1 = __buf->sbumpc();

   120       if (_Traits::eq_int_type(__c1, _Traits::eof())) {

   121         __is.setstate(__istream::eofbit);

   122         break;

   123       }

   124       else {

   125         _CharT __c = _Traits::to_char_type(__c1);

   126 

   127         if (_Ctype.is(_C_type::space, __c)) {

   128           if (_Traits::eq_int_type(__buf->sputbackc(__c), _Traits::eof()))

   129             __is.setstate(__istream::failbit);

   130           break;

   131         }

   132 #ifdef __SYMBIAN32__

   133         else if (__c == '\b') {

   134           __s.pop_back();

   135         }

   136 #endif

   137         else

   138           __s.push_back(__c);

   139       }

   140     }

   141     

   142     // If we have read no characters, then set failbit.

   143     if (__s.size() == 0)

   144       __is.setstate(__istream::failbit);

   145   }

   146   else

   147     __is.setstate(__istream::failbit);

   148 

   149   return __is;

   150 }

   151 

   152 template <class _CharT, class _Traits, class _Alloc>    

   153 basic_istream<_CharT, _Traits>& _STLP_CALL 

   154 getline(basic_istream<_CharT, _Traits>& __is,

   155         basic_string<_CharT,_Traits,_Alloc>& __s,

   156         _CharT __delim)

   157 {

   158   _STLP_USING_IO

   159   typedef basic_istream<_CharT, _Traits> __istream;

   160   size_t __nread = 0;

   161   typename basic_istream<_CharT, _Traits>::sentry __sentry(__is, true);

   162   if (__sentry) {

   163     basic_streambuf<_CharT, _Traits>* __buf = __is.rdbuf();

   164     __s.clear();

   165 

   166     while (__nread < __s.max_size()) {

   167       int __c1 = __buf->sbumpc();

   168       if (_Traits::eq_int_type(__c1, _Traits::eof())) {

   169         __is.setstate(__istream::eofbit);

   170         break;

   171       }

   172       else {

   173         ++__nread;

   174         _CharT __c = _Traits::to_char_type(__c1);

   175         if (!_Traits::eq(__c, __delim)) 

   176           __s.push_back(__c);

   177         else

   178           break;              // Character is extracted but not appended.

   179       }

   180     }

   181   }

   182   if (__nread == 0 || __nread >= __s.max_size())

   183     __is.setstate(__istream::failbit);

   184 

   185   return __is;

   186 }

   187 

   188 #elif ! defined ( _STLP_USE_NO_IOSTREAMS )

   189 

   190 // (reg) For Watcom IO, _OSTREAM_DLL tells if ostream class is in .exe or in .dll

   191 

   192 template <class _CharT, class _Traits, class _Alloc>

   193 _OSTREAM_DLL&  _STLP_CALL operator<<(_OSTREAM_DLL& __os, 

   194                     const basic_string<_CharT,_Traits,_Alloc>& __s)

   195 {

   196   _STLP_USING_IO

   197   streambuf* __buf = __os.rdbuf();

   198   if (__buf) {

   199     size_t __n = __s.size();

   200     size_t __pad_len = 0;

   201     const bool __left = (__os.flags() & ios::left) !=0;

   202     const size_t __w = __os.width();

   203 

   204     if (__n < __w) { 

   205       __pad_len = __w - __n; 

   206     } 

   207     

   208     if (!__left)

   209       __stlp_string_fill(__os, __buf, __pad_len);

   210   

   211     const size_t __nwritten = __buf->sputn(__s.data(), __n);

   212 

   213     if (__left)

   214       __stlp_string_fill(__os, __buf, __pad_len);

   215 

   216     if (__nwritten != __n)

   217       __os.clear(__os.rdstate() | ios::failbit);

   218 

   219     __os.width(0);

   220   }

   221   else

   222     __os.clear(__os.rdstate() | ios::badbit);

   223 

   224   return __os;

   225 }

   226 

   227 template <class _CharT, class _Traits, class _Alloc>

   228 _ISTREAM_DLL& _STLP_CALL operator>>(_ISTREAM_DLL& __is, basic_string<_CharT,_Traits,_Alloc>& __s)

   229 {

   230   _STLP_USING_IO

   231   if (!__is)

   232     return __is;

   233 

   234   streambuf* __buf = __is.rdbuf();

   235   if (__buf) {

   236 

   237     if (__is.flags() & ios::skipws) {

   238       //      _CharT __c;

   239       int __c;

   240       do {

   241         __c = __buf->sbumpc();

   242       }

   243       while (__c != EOF && isspace((unsigned char)__c));

   244 

   245       if (__c == EOF) {

   246         __is.clear(__is.rdstate() | ios::eofbit | ios::failbit);

   247       }

   248       else {

   249 	if (__buf->sputbackc(__c) == EOF)

   250 	  __is.clear(__is.rdstate() | ios::failbit);

   251       }

   252     }

   253 

   254     // If we arrive at end of file (or fail for some other reason) while

   255     // still discarding whitespace, then we don't try to read the string.

   256     if (__is) {

   257       __s.clear();

   258 

   259       size_t __n = __is.width();

   260       if (__n == 0)

   261         __n = __STATIC_CAST(size_t,-1);

   262       else

   263         __s.reserve(__n);

   264 

   265       while (__n-- > 0) {

   266         int __c1 = __buf->sbumpc();

   267         if (__c1 == EOF) {

   268           __is.clear(__is.rdstate() | ios::eofbit);

   269           break;

   270         }

   271         else {

   272           _CharT __c = _Traits::to_char_type(__c1);

   273 

   274           if (isspace((unsigned char) __c)) {

   275             if (__buf->sputbackc(__c) == EOF)

   276               __is.clear(__is.rdstate() | ios::failbit);

   277             break;

   278           }

   279           else

   280             __s.push_back(__c);

   281         }

   282       }

   283     

   284       // If we have read no characters, then set failbit.

   285       if (__s.size() == 0)

   286         __is.clear(__is.rdstate() | ios::failbit);

   287     }

   288 

   289     __is.width(0);

   290   }

   291   else                          // We have no streambuf.

   292     __is.clear(__is.rdstate() | ios::badbit);

   293 

   294   return __is;

   295 }

   296 

   297 template <class _CharT, class _Traits, class _Alloc>    

   298 _ISTREAM_DLL& _STLP_CALL getline(_ISTREAM_DLL& __is,

   299                  basic_string<_CharT,_Traits,_Alloc>& __s,

   300                  _CharT __delim)

   301 {

   302   _STLP_USING_IO

   303   streambuf* __buf = __is.rdbuf();

   304   if (__buf) {

   305     size_t __nread = 0;

   306     if (__is) {

   307       __s.clear();

   308 

   309       while (__nread < __s.max_size()) {

   310         int __c1 = __buf->sbumpc();

   311         if (__c1 == EOF) {

   312           __is.clear(__is.rdstate() | ios::eofbit);

   313           break;

   314         }

   315         else {

   316           ++__nread;

   317           _CharT __c = _Traits::to_char_type(__c1);

   318           if (!_Traits::eq(__c, __delim)) 

   319             __s.push_back(__c);

   320           else

   321             break;              // Character is extracted but not appended.

   322         }

   323       }

   324     }

   325 

   326     if (__nread == 0 || __nread >= __s.max_size())

   327       __is.clear(__is.rdstate() | ios::failbit);

   328   }

   329   else

   330     __is.clear(__is.rdstate() | ios::badbit);

   331 

   332   return __is;

   333 }

   334 

   335 # endif /* _STLP_NEW_IOSTREAMS */

   336 

   337 _STLP_END_NAMESPACE

   338 

   339 // # undef _STLP_USING_IO

   340 # undef basic_string

   341 

   342 #endif
test