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Allow sort keys to contain nothing but a single NUL character (characters may be ignorable).

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[SVN r27408]
This commit is contained in:
John Maddock
2005-02-17 12:44:16 +00:00
parent 077f211f2f
commit ecd5dd5ff3
7 changed files with 41 additions and 6 deletions
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9
include/boost/regex/v4/cpp_regex_traits.hpp
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@ -509,10 +509,8 @@ typename cpp_regex_traits_implementation<charT>::string_type
case sort_delim:
// get a regular sort key, and then truncate everything after the delim:
result.assign(this->m_pcollate->transform(p1, p2));
if(result.size() && (result[0] == m_collate_delim))
break;
std::size_t i;
for(i = 1; i < result.size(); ++i)
for(i = 0; i < result.size(); ++i)
{
if(result[i] == m_collate_delim)
break;
@ -523,6 +521,11 @@ typename cpp_regex_traits_implementation<charT>::string_type
}catch(...){}
while(result.size() && (charT(0) == *result.rbegin()))
result.erase(result.size() - 1);
if(result.empty())
{
// character is ignorable at the primary level:
result = string_type(1, charT(0));
}
return result;
}