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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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6
include/boost/regex/v4/basic_regex_creator.hpp
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@ -407,6 +407,10 @@ re_syntax_base* basic_regex_creator<charT, traits>::append_set(
charT a2[3] = { c2.first, c2.second, charT(0), };
s1 = this->m_traits.transform(a1, (a1[1] ? a1+2 : a1+1));
s2 = this->m_traits.transform(a2, (a2[1] ? a2+2 : a2+1));
if(s1.size() == 0)
s1 = string_type(1, charT(0));
if(s2.size() == 0)
s2 = string_type(1, charT(0));
}
else
{
@ -546,7 +550,7 @@ re_syntax_base* basic_regex_creator<charT, traits>::append_set(
}
else
{
if(!char_less<charT>(c1, c2))
if(char_less<charT>(c2, c1))
{
// Oops error:
return 0;

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;
}

18
include/boost/regex/v4/perl_matcher.hpp
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@ -68,11 +68,25 @@ inline bool can_start(wchar_t c, const unsigned char* map, unsigned char mask)
#ifndef _RWSTD_VER
template <class C, class T, class A>
inline int string_compare(const std::basic_string<C,T,A>& s, const C* p)
{ return s.compare(p); }
{
if(0 == *p)
{
if(s.empty() || ((s.size() == 1) && (s[0] == 0)))
return 0;
}
return s.compare(p);
}
#else
template <class C, class T, class A>
inline int string_compare(const std::basic_string<C,T,A>& s, const C* p)
{ return s.compare(p); }
{
if(0 == *p)
{
if(s.empty() || ((s.size() == 1) && (s[0] == 0)))
return 0;
}
return s.compare(p);
}
inline int string_compare(const std::string& s, const char* p)
{ return std::strcmp(s.c_str(), p); }
# ifndef BOOST_NO_WREGEX

2
include/boost/regex/v4/w32_regex_traits.hpp
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@ -372,6 +372,8 @@ typename w32_regex_traits_implementation<charT>::string_type
result.erase(i);
break;
}
if(result.empty())
result = string_type(1, charT(0));
return result;
}