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format: recognise specifiers for char*, size_t

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This commit is contained in:
Danny Robson 2015-09-21 16:34:15 +10:00
parent 7092e45d7a
commit 7ccad71e6e
1 changed files with 39 additions and 2 deletions
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41
format.ipp
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@ -28,6 +28,41 @@
namespace util {
namespace detail { namespace format {
///////////////////////////////////////////////////////////////////////
template <typename T>
inline bool
is_valid_specifier (const char*)
{ return false; }
//---------------------------------------------------------------------
template <>
inline bool
is_valid_specifier<const char*> (const char *s)
{ return *s == 's'; }
//---------------------------------------------------------------------
template <>
inline bool
is_valid_specifier<char*> (const char *s)
{ return *s == 's'; }
//---------------------------------------------------------------------
template <>
inline bool
is_valid_specifier<std::string> (const char *s)
{ return *s == 's'; }
//---------------------------------------------------------------------
template <>
inline bool
is_valid_specifier<size_t> (const char *s)
{ return *s == 'u'; }
///////////////////////////////////////////////////////////////////////
template <typename InputIt>
void
render (InputIt first,
@ -42,6 +77,7 @@ namespace util {
}
//---------------------------------------------------------------------
template <typename InputIt,
typename ValueT,
typename ...Args>
@ -65,8 +101,8 @@ namespace util {
if (spec == last)
throw util::format::format_error ("missing format specifier");
if (*spec != 's')
throw util::format::format_error ("unhandled format specifier");
if (!is_valid_specifier<typename std::decay<ValueT>::type> (&*spec))
throw util::format::format_error ("invalid/unhandled format specifier");
dest << val;
@ -74,6 +110,7 @@ namespace util {
}
} }
///////////////////////////////////////////////////////////////////////////
namespace format {
template <typename ...Args>
std::string