mirror of
https://github.com/jezhiggins/arabica
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81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
//---------------------------------------------------------------------------
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// $Id$
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//---------------------------------------------------------------------------
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#include "utf8iso88591codecvt.h"
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#include "impl/iso88591_utf8.h"
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//---------------------------------------------------------------------------
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// This facet converts from ISO8859:1 (Latin 1) chars to UTF-8 encoded chars.
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std::codecvt_base::result utf8iso88591codecvt::do_out(std::mbstate_t& /* state */,
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const char* from,
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const char* from_end,
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const char*& from_next,
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char* to,
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char* to_limit,
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char*& to_next) const
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{
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return Arabica::Internal::iso88591_2_utf8(from, from_end, from_next, to, to_limit, to_next);
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} // do_out
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std::codecvt_base::result utf8iso88591codecvt::do_in(std::mbstate_t& /* state */,
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const char* from,
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const char* from_end,
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const char*& from_next,
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char* to,
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char* to_limit,
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char*& to_next) const
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{
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return Arabica::Internal::utf8_2_iso88591(from, from_end, from_next, to, to_limit, to_next);
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} // do_in
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std::codecvt_base::result utf8iso88591codecvt::do_unshift(std::mbstate_t& /* state */,
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char* to,
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char* /* to_limit */,
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char*& to_next) const
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{
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to_next = to;
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return noconv;
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} // do_unshift
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int utf8iso88591codecvt::do_length(const std::mbstate_t&,
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const char* from,
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const char* end,
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size_t max) const
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{
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size_t count(0);
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const char* from_next = from;
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while((from_next < end) && (count < max))
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{
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if(!(*from_next & 0x80))
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{
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++count;
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++from_next;
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}
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else if((*from_next&0xc0) == 0xc0)
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{
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if(from_next+2 < end)
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{
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++count;
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from_next += 2;
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}
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else
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break;
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}
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else if((*from_next&0xe0) == 0xe0)
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{
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if(from_next+3 < end)
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{
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++count;
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from_next += 3;
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}
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else
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break;
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}
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} // while
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return (from_next-from);
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} // do_length
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// end of file
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