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ircd::util: Retype ctype<> for const_buffer; fix return type; simplify loop.

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This commit is contained in:
Jason Volk 2018-02-20 13:58:18 -08:00
parent d673ce16d4
commit 98ceb154c3
1 changed files with 26 additions and 20 deletions
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46
include/ircd/util/typography.h
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@ -206,42 +206,48 @@ is_input_iterator()
/// Convenience loop to test std::is* on a character sequence
template<int (&test)(int) = std::isprint>
ssize_t
ctype(const char *begin,
ctype(const char *const &begin,
const char *const &end)
{
size_t i(0);
for(; begin != end; ++begin, ++i)
if(!test(static_cast<unsigned char>(*begin)))
return i;
for(const char *it(begin); it != end; ++it)
if(test(static_cast<unsigned char>(*it)) != 0)
return std::distance(begin, it);
return -1;
}
/// ctype test for a string_view. Returns the character position where the
/// ctype test for a const_buffer. Returns the character position where the
/// test fails. Returns -1 on success. The test is a function specified in
/// the template simply as `ctype<std::isprint>(string_view{"hi"});`
/// the template simply as `ctype<std::isprint>(const_buffer{"hi"});` which
/// should fail because const_buffer's over a string literal see the trailing
/// null character.
template<int (&test)(int)>
ssize_t
ctype(const string_view &s)
ctype(const const_buffer &s)
{
return ctype<test>(begin(s), end(s));
}
/// Boolean alternative for ctype to avoid the -1/pos test
template<int (&test)(int) = std::isprint>
ssize_t
all_of(const char *begin,
const char *const &end)
{
return std::all_of(begin, end, test);
}
/// Boolean alternative for ctype(string_view)
/// Boolean alternative for ctype(const_buffer)
template<int (&test)(int)>
bool
all_of(const string_view &s)
all_of(const const_buffer &s)
{
return std::all_of(begin(s), end(s), test);
return std::all_of(begin(s), end(s), [](const char &c)
{
return test(c) != 0;
});
}
/// Boolean alternative for ctype(const_buffer)
template<int (&test)(int)>
bool
none_of(const const_buffer &s)
{
return std::all_of(begin(s), end(s), [](const char &c)
{
return test(c) == 0;
});
}
/// Zero testing functor (work in progress)