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114 lines
3.9 KiB
114 lines
3.9 KiB
/*=========================================================================
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Program: KWSys - Kitware System Library
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Module: $RCSfile: kwsys_stl_string.hxx.in,v $
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Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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// This header is extra code for <vtksys/stl/string>.
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#if !defined(vtksys_stl_string_including_hxx)
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# error "The header <vtksys/stl/string.hxx> may be included only by <vtksys/stl/string>."
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#endif
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// Provide the istream operator for the stl string if it is not
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// provided by the system or another copy of kwsys. Allow user code
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// to block this definition by defining the macro
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// vtksys_STL_STRING_NO_ISTREAM
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// to avoid conflicts with other libraries. User code can test for
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// this definition by checking the macro
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// vtksys_STL_STRING_ISTREAM_DEFINED
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#if !vtksys_STL_STRING_HAVE_ISTREAM && !defined(vtksys_STL_STRING_NO_ISTREAM) && !defined(KWSYS_STL_STRING_ISTREAM_DEFINED)
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# define KWSYS_STL_STRING_ISTREAM_DEFINED
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# define vtksys_STL_STRING_ISTREAM_DEFINED
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# include <ctype.h> // isspace
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# include <vtksys/ios/iostream>
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inline vtksys_ios::istream&
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operator>>(vtksys_ios::istream& is,
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vtksys_stl::string& s)
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{
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// Keep track of the resulting state.
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int state = vtksys_ios::ios::goodbit;
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// Save the width setting and set it back to zero.
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size_t n = static_cast<size_t>(is.width(0));
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// Clear any old contents of the output string.
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s.erase();
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// Skip leading whitespace.
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is.eatwhite();
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istream& okay = is;
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if(okay)
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{
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// Select a maximum possible length.
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if(n == 0 || n >= s.max_size())
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{
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n = s.max_size();
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}
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// Read until a space is found or the maximum length is reached.
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bool success = false;
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for(int c = is.peek(); (--n > 0 && c != EOF && !isspace(c)); c = is.peek())
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{
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s += static_cast<char>(c);
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success = true;
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is.ignore();
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}
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// Set flags for resulting state.
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if(is.peek() == EOF) { state |= vtksys_ios::ios::eofbit; }
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if(success) { state |= vtksys_ios::ios::failbit; }
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}
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// Set the final result state.
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is.clear(state);
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return is;
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}
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#endif
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// Provide the ostream operator for the stl string if it is not
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// provided by the system or another copy of kwsys. Allow user code
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// to block this definition by defining the macro
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// vtksys_STL_STRING_NO_OSTREAM
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// to avoid conflicts with other libraries. User code can test for
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// this definition by checking the macro
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// vtksys_STL_STRING_OSTREAM_DEFINED
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#if !vtksys_STL_STRING_HAVE_OSTREAM && !defined(vtksys_STL_STRING_NO_OSTREAM) && !defined(KWSYS_STL_STRING_OSTREAM_DEFINED)
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# define KWSYS_STL_STRING_OSTREAM_DEFINED
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# define vtksys_STL_STRING_OSTREAM_DEFINED
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# include <vtksys/ios/iostream>
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inline vtksys_ios::ostream&
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operator<<(vtksys_ios::ostream& os,
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vtksys_stl::string const& s)
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{
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return os << s.c_str();
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}
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#endif
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// Provide the operator!= for the stl string and char* if it is not
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// provided by the system or another copy of kwsys. Allow user code
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// to block this definition by defining the macro
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// vtksys_STL_STRING_NO_NEQ_CHAR
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// to avoid conflicts with other libraries. User code can test for
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// this definition by checking the macro
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// vtksys_STL_STRING_NEQ_CHAR_DEFINED
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#if !vtksys_STL_STRING_HAVE_NEQ_CHAR && !defined(vtksys_STL_STRING_NO_NEQ_CHAR) && !defined(KWSYS_STL_STRING_NEQ_CHAR_DEFINED)
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# define KWSYS_STL_STRING_NEQ_CHAR_DEFINED
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# define vtksys_STL_STRING_NEQ_CHAR_DEFINED
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inline bool operator!=(vtksys_stl::string const& s, const char* c)
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{
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return !(s == c);
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}
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inline bool operator!=(const char* c, vtksys_stl::string const& s)
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{
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return !(s == c);
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}
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#endif
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