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mes5k 2004-11-05 05:06:43 +00:00
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commit c0aa4a9042
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include/tclap/PrintSensibly.h
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/******************************************************************************
*
* @file PrintSensibly.h
*
* Copyright (c) 2004, Michael E. Smoot .
* Copyright (c) 2004, Michael E. Smoot, Daniel Aarno.
* All rights reverved.
*
* See the file COPYING in the top directory of this distribution for
* more information.
*
* THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*****************************************************************************/
#ifndef TCLAP_PRINTSENSIBLY_H
#define TCLAP_PRINTSENSIBLY_H
#include <iostream>
#include <algorithm>
#include <string>
namespace TCLAP {
/**
* This function inserts line breaks and indents long strings according the
* params input. It will only break lines at spaces, commas and pipes.
* \param os - The stream to be printed to.
* \param s - The string to be printed.
* \param maxWidth - The maxWidth allowed for the output line.
* \param indentSpaces - The number of spaces to indent the first line.
* \param secondLineOffset - The number of spaces to indent the second
* and all subsequent lines in addition to indentSpaces.
*/
inline void spacePrint( std::ostream& os,
const std::string& s,
int maxWidth,
int indentSpaces=0,
int secondLineOffset=0 )
{
int len = (int)(s.length());
if ( (len + indentSpaces > maxWidth) && maxWidth > 0 )
{
int allowedLen = maxWidth - indentSpaces;
int start = 0;
while ( start < len )
{
// find the substring length
int stringLen = std::min( len - start, allowedLen );
// trim the length so it doesn't end in middle of a word
if ( stringLen == allowedLen )
while ( s[stringLen+start] != ' ' &&
s[stringLen+start] != ',' &&
s[stringLen+start] != '|' )
stringLen--;
// check for newlines
for ( int i = 0; i < stringLen; i++ )
if ( s[start+i] == '\n' )
stringLen = i+1;
// print the indent
for ( int i = 0; i < indentSpaces; i++ )
os << " ";
if ( start == 0 )
{
// handle second line offsets
indentSpaces += secondLineOffset;
// adjust allowed len
allowedLen -= secondLineOffset;
}
os << s.substr(start,stringLen) << std::endl;
// so we don't start a line with a space
if ( s[stringLen+start] == ' ' )
start++;
start += stringLen;
}
}
else
{
for ( int i = 0; i < indentSpaces; i++ )
os << " ";
os << s << std::endl;
}
}
} //namespace TCLAP
#endif