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Added writing of commandline options in getFormatedString when there is no description string.

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This commit is contained in:
Robert Osfield
2005-11-09 17:19:34 +00:00
parent 1c73f6af2b
commit 73f7a68dbe
1 changed files with 62 additions and 57 deletions
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119
src/osg/ApplicationUsage.cpp
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@@ -101,69 +101,74 @@ void ApplicationUsage::getFormattedString(std::string& str, const UsageMap& um,u
std::string::size_type pos = 0;
std::string::size_type offset = 0;
bool firstInLine = true;
while (pos<explanation.length())
if (!explanation.empty())
{
if (firstInLine) offset = 0;
// skip any leading white space.
while (pos<explanation.length() && explanation[pos]==' ')
while (pos<explanation.length())
{
if (firstInLine) ++offset;
++pos;
}
firstInLine = false;
std::string::size_type width = minimum((std::string::size_type)(explanation.length()-pos),(std::string::size_type)(explanationWidth-offset));
std::string::size_type slashn_pos = explanation.find('\n',pos);
unsigned int extraSkip = 0;
bool concatinated = false;
if (slashn_pos!=std::string::npos)
{
if (slashn_pos<pos+width)
{
width = slashn_pos-pos;
++extraSkip;
firstInLine = true;
}
else if (slashn_pos==pos+width)
{
++extraSkip;
firstInLine = true;
}
}
if (pos+width<explanation.length())
{
// now reduce width until we get a space or a return
// so that we ensure that whole words are printed.
while (width>0 &&
explanation[pos+width]!=' ' &&
explanation[pos+width]!='\n') --width;
if (width==0)
{
// word must be longer than a whole line so will need
// to concatinate it.
width = explanationWidth-1;
concatinated = true;
}
}
if (firstInLine) offset = 0;
line.replace(explanationPos+offset,explanationWidth, explanation, pos, width);
// skip any leading white space.
while (pos<explanation.length() && explanation[pos]==' ')
{
if (firstInLine) ++offset;
++pos;
}
if (concatinated) { str += line; str += "-\n"; }
else { str += line; str += "\n"; }
// move to the next line of output.
line.assign(fullWidth,' ');
pos += width+extraSkip;
firstInLine = false;
std::string::size_type width = minimum((std::string::size_type)(explanation.length()-pos),(std::string::size_type)(explanationWidth-offset));
std::string::size_type slashn_pos = explanation.find('\n',pos);
unsigned int extraSkip = 0;
bool concatinated = false;
if (slashn_pos!=std::string::npos)
{
if (slashn_pos<pos+width)
{
width = slashn_pos-pos;
++extraSkip;
firstInLine = true;
}
else if (slashn_pos==pos+width)
{
++extraSkip;
firstInLine = true;
}
}
if (pos+width<explanation.length())
{
// now reduce width until we get a space or a return
// so that we ensure that whole words are printed.
while (width>0 &&
explanation[pos+width]!=' ' &&
explanation[pos+width]!='\n') --width;
if (width==0)
{
// word must be longer than a whole line so will need
// to concatinate it.
width = explanationWidth-1;
concatinated = true;
}
}
line.replace(explanationPos+offset,explanationWidth, explanation, pos, width);
if (concatinated) { str += line; str += "-\n"; }
else { str += line; str += "\n"; }
// move to the next line of output.
line.assign(fullWidth,' ');
pos += width+extraSkip;
}
}
else
{
str += line; str += "\n";
}
}
}