Fix encoding() and max_length() values for codecvt facets
* src/c++11/codecvt.cc (codecvt<char16_t, char, mbstate_t>) (codecvt<char32_t, char, mbstate_t>, __codecvt_utf8_base<char16_t>) (__codecvt_utf8_base<char32_t>, __codecvt_utf8_base<wchar_t>) (__codecvt_utf16_base<char16_t>, __codecvt_utf16_base<char32_t>) (__codecvt_utf16_base<wchar_t>, __codecvt_utf8_utf16_base<char16_t>) (__codecvt_utf8_utf16_base<char32_t>) (__codecvt_utf8_utf16_base<wchar_t>): Fix do_encoding() and do_max_length() return values. * testsuite/22_locale/codecvt/codecvt_utf16/members.cc: New test. * testsuite/22_locale/codecvt/codecvt_utf8/members.cc: New test. * testsuite/22_locale/codecvt/codecvt_utf8_utf16/members.cc: New test. From-SVN: r246201
This commit is contained in:
Jonathan Wakely
Jonathan Wakely
parent
bcd682e1fa
commit
516231de73
6 changed files with 341 additions and 33 deletions
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@ -1,5 +1,17 @@
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2017-03-16 Jonathan Wakely <jwakely@redhat.com>
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* src/c++11/codecvt.cc (codecvt<char16_t, char, mbstate_t>)
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(codecvt<char32_t, char, mbstate_t>, __codecvt_utf8_base<char16_t>)
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(__codecvt_utf8_base<char32_t>, __codecvt_utf8_base<wchar_t>)
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(__codecvt_utf16_base<char16_t>, __codecvt_utf16_base<char32_t>)
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(__codecvt_utf16_base<wchar_t>, __codecvt_utf8_utf16_base<char16_t>)
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(__codecvt_utf8_utf16_base<char32_t>)
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(__codecvt_utf8_utf16_base<wchar_t>): Fix do_encoding() and
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do_max_length() return values.
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* testsuite/22_locale/codecvt/codecvt_utf16/members.cc: New test.
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* testsuite/22_locale/codecvt/codecvt_utf8/members.cc: New test.
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* testsuite/22_locale/codecvt/codecvt_utf8_utf16/members.cc: New test.
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PR libstdc++/79980
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* include/bits/locale_conv.h (__do_str_codecvt): Set __count on
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error path.
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@ -72,8 +72,8 @@ namespace
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// Multibyte sequences can have "header" consisting of Byte Order Mark
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const unsigned char utf8_bom[3] = { 0xEF, 0xBB, 0xBF };
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const unsigned char utf16_bom[4] = { 0xFE, 0xFF };
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const unsigned char utf16le_bom[4] = { 0xFF, 0xFE };
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const unsigned char utf16_bom[2] = { 0xFE, 0xFF };
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const unsigned char utf16le_bom[2] = { 0xFF, 0xFE };
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template<size_t N>
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inline bool
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@ -695,7 +695,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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codecvt<char16_t, char, mbstate_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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codecvt<char16_t, char, mbstate_t>::do_always_noconv() const throw()
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@ -713,9 +713,9 @@ do_length(state_type&, const extern_type* __from,
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int
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codecvt<char16_t, char, mbstate_t>::do_max_length() const throw()
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{
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// Any valid UTF-8 sequence of 3 bytes fits in a single 16-bit code unit,
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// whereas 4 byte sequences require two 16-bit code units.
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return 3;
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// A single character (one or two UTF-16 code units) requires
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// up to four UTF-8 code units.
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return 4;
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}
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// Define members of codecvt<char32_t, char, mbstate_t> specialization.
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@ -766,7 +766,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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codecvt<char32_t, char, mbstate_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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codecvt<char32_t, char, mbstate_t>::do_always_noconv() const throw()
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@ -783,7 +783,11 @@ do_length(state_type&, const extern_type* __from,
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int
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codecvt<char32_t, char, mbstate_t>::do_max_length() const throw()
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{ return 4; }
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{
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// A single character (one UTF-32 code unit) requires
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// up to 4 UTF-8 code units.
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return 4;
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}
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// Define members of codecvt_utf8<char16_t> base class implementation.
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// Converts from UTF-8 to UCS-2.
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@ -835,7 +839,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf8_base<char16_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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__codecvt_utf8_base<char16_t>::do_always_noconv() const throw()
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@ -852,7 +856,14 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf8_base<char16_t>::do_max_length() const throw()
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{ return 3; }
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{
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// A single UCS-2 character requires up to three UTF-8 code units.
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// (UCS-2 cannot represent characters that use four UTF-8 code units).
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int max = 3;
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if (_M_mode & consume_header)
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max += sizeof(utf8_bom);
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return max;
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}
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// Define members of codecvt_utf8<char32_t> base class implementation.
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// Converts from UTF-8 to UTF-32 (aka UCS-4).
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@ -900,7 +911,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf8_base<char32_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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__codecvt_utf8_base<char32_t>::do_always_noconv() const throw()
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@ -917,7 +928,13 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf8_base<char32_t>::do_max_length() const throw()
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{ return 4; }
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{
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// A single UCS-4 character requires up to four UTF-8 code units.
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int max = 4;
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if (_M_mode & consume_header)
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max += sizeof(utf8_bom);
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return max;
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}
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#ifdef _GLIBCXX_USE_WCHAR_T
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// Define members of codecvt_utf8<wchar_t> base class implementation.
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@ -992,7 +1009,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf8_base<wchar_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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__codecvt_utf8_base<wchar_t>::do_always_noconv() const throw()
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@ -1015,7 +1032,16 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf8_base<wchar_t>::do_max_length() const throw()
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{ return 4; }
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{
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#if __SIZEOF_WCHAR_T__ == 2
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int max = 3; // See __codecvt_utf8_base<char16_t>::do_max_length()
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#else
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int max = 4; // See __codecvt_utf8_base<char32_t>::do_max_length()
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#endif
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if (_M_mode & consume_header)
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max += sizeof(utf8_bom);
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return max;
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}
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#endif
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// Define members of codecvt_utf16<char16_t> base class implementation.
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@ -1070,7 +1096,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf16_base<char16_t>::do_encoding() const throw()
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{ return 1; }
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{ return 0; } // UTF-16 is not a fixed-width encoding
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bool
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__codecvt_utf16_base<char16_t>::do_always_noconv() const throw()
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@ -1089,7 +1115,14 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf16_base<char16_t>::do_max_length() const throw()
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{ return 3; }
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{
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// A single UCS-2 character requires one UTF-16 code unit (so two chars).
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// (UCS-2 cannot represent characters that use multiple UTF-16 code units).
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int max = 2;
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if (_M_mode & consume_header)
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max += sizeof(utf16_bom);
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return max;
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}
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// Define members of codecvt_utf16<char32_t> base class implementation.
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// Converts from UTF-16 to UTF-32 (aka UCS-4).
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@ -1143,7 +1176,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf16_base<char32_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-16 is not a fixed-width encoding
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bool
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__codecvt_utf16_base<char32_t>::do_always_noconv() const throw()
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@ -1162,7 +1195,14 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf16_base<char32_t>::do_max_length() const throw()
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{ return 4; }
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{
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// A single UCS-4 character requires one or two UTF-16 code units
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// (so up to four chars).
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int max = 4;
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if (_M_mode & consume_header)
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max += sizeof(utf16_bom);
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return max;
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}
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#ifdef _GLIBCXX_USE_WCHAR_T
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// Define members of codecvt_utf16<wchar_t> base class implementation.
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@ -1237,7 +1277,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf16_base<wchar_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-16 is not a fixed-width encoding
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bool
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__codecvt_utf16_base<wchar_t>::do_always_noconv() const throw()
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@ -1261,7 +1301,16 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf16_base<wchar_t>::do_max_length() const throw()
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{ return 4; }
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{
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#if __SIZEOF_WCHAR_T__ == 2
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int max = 2; // See __codecvt_utf16_base<char16_t>::do_max_length()
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#else
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int max = 4; // See __codecvt_utf16_base<char32_t>::do_max_length()
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#endif
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if (_M_mode & consume_header)
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max += sizeof(utf16_bom);
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return max;
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}
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#endif
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// Define members of codecvt_utf8_utf16<char16_t> base class implementation.
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@ -1314,7 +1363,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf8_utf16_base<char16_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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__codecvt_utf8_utf16_base<char16_t>::do_always_noconv() const throw()
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@ -1332,9 +1381,12 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf8_utf16_base<char16_t>::do_max_length() const throw()
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{
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// Any valid UTF-8 sequence of 3 bytes fits in a single 16-bit code unit,
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// whereas 4 byte sequences require two 16-bit code units.
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return 3;
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// A single character can be 1 or 2 UTF-16 code units,
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// requiring up to 4 UTF-8 code units.
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int max = 4;
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if (_M_mode & consume_header)
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max += sizeof(utf8_bom);
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return max;
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}
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// Define members of codecvt_utf8_utf16<char32_t> base class implementation.
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@ -1387,7 +1439,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf8_utf16_base<char32_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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__codecvt_utf8_utf16_base<char32_t>::do_always_noconv() const throw()
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@ -1405,9 +1457,12 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf8_utf16_base<char32_t>::do_max_length() const throw()
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{
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// Any valid UTF-8 sequence of 3 bytes fits in a single 16-bit code unit,
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// whereas 4 byte sequences require two 16-bit code units.
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return 3;
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// A single character can be 1 or 2 UTF-16 code units,
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// requiring up to 4 UTF-8 code units.
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int max = 4;
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if (_M_mode & consume_header)
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max += sizeof(utf8_bom);
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return max;
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}
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#ifdef _GLIBCXX_USE_WCHAR_T
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@ -1461,7 +1516,7 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
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int
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__codecvt_utf8_utf16_base<wchar_t>::do_encoding() const throw()
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{ return 0; }
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{ return 0; } // UTF-8 is not a fixed-width encoding
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bool
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__codecvt_utf8_utf16_base<wchar_t>::do_always_noconv() const throw()
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@ -1479,9 +1534,12 @@ do_length(state_type&, const extern_type* __from,
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int
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__codecvt_utf8_utf16_base<wchar_t>::do_max_length() const throw()
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{
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// Any valid UTF-8 sequence of 3 bytes fits in a single 16-bit code unit,
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// whereas 4 byte sequences require two 16-bit code units.
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return 3;
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// A single character can be 1 or 2 UTF-16 code units,
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// requiring up to 4 UTF-8 code units.
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int max = 4;
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if (_M_mode & consume_header)
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max += sizeof(utf8_bom);
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return max;
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}
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#endif
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@ -34,7 +34,7 @@ test01()
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const codecvt_c16* const cvt = &use_facet<codecvt_c16>(loc_c);
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VERIFY(!cvt->always_noconv());
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VERIFY(cvt->max_length() == 3);
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VERIFY(cvt->max_length() == 4);
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VERIFY(cvt->encoding() == 0);
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const char u8dat[] = u8"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
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@ -0,0 +1,81 @@
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// Copyright (C) 2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do run { target c++11 } }
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#include <codecvt>
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#include <testsuite_hooks.h>
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const int bomlen = 2; // UTF-16 BOM is 16 bits
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void
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test01()
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{
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const int maxlen = 2;
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std::codecvt_utf16<char16_t> c;
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VERIFY( c.always_noconv() == false );
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VERIFY( c.encoding() == 0 );
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VERIFY( c.max_length() == maxlen );
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std::codecvt_utf16<char16_t, 0x10ffff, std::consume_header> c_bom;
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VERIFY( c_bom.always_noconv() == false );
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VERIFY( c_bom.encoding() == 0 );
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VERIFY( c_bom.max_length() == (maxlen + bomlen) );
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}
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void
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test02()
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{
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const int maxlen = 4;
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std::codecvt_utf16<char32_t> c;
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VERIFY( c.always_noconv() == false );
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VERIFY( c.encoding() == 0 );
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VERIFY( c.max_length() == maxlen );
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std::codecvt_utf16<char32_t, 0x10ffff, std::consume_header> c_bom;
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VERIFY( c_bom.always_noconv() == false );
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VERIFY( c_bom.encoding() == 0 );
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VERIFY( c_bom.max_length() == (maxlen + bomlen) );
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}
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void
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test03()
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{
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#ifdef _GLIBCXX_USE_WCHAR_T
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const int maxlen = sizeof(wchar_t) == 4 ? 4 : 2;
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std::codecvt_utf16<wchar_t> c;
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VERIFY( c.always_noconv() == false );
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VERIFY( c.encoding() == 0 );
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VERIFY( c.max_length() == maxlen );
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std::codecvt_utf16<wchar_t, 0x10ffff, std::consume_header> c_bom;
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VERIFY( c_bom.always_noconv() == false );
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VERIFY( c_bom.encoding() == 0 );
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VERIFY( c_bom.max_length() == (maxlen + bomlen) );
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#endif
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}
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int
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main()
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{
|
||||
test01();
|
||||
test02();
|
||||
test03();
|
||||
}
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
// Copyright (C) 2017 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
// { dg-do run { target c++11 } }
|
||||
|
||||
#include <codecvt>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
const int bomlen = 3; // UTF-8 BOM is 24 bits
|
||||
|
||||
void
|
||||
test01()
|
||||
{
|
||||
const int maxlen = 3;
|
||||
|
||||
std::codecvt_utf8<char16_t> c;
|
||||
VERIFY( c.always_noconv() == false );
|
||||
VERIFY( c.encoding() == 0 );
|
||||
VERIFY( c.max_length() == maxlen );
|
||||
|
||||
std::codecvt_utf8<char16_t, 0x10ffff, std::consume_header> c_bom;
|
||||
VERIFY( c_bom.always_noconv() == false );
|
||||
VERIFY( c_bom.encoding() == 0 );
|
||||
VERIFY( c_bom.max_length() == (maxlen + bomlen) );
|
||||
}
|
||||
|
||||
void
|
||||
test02()
|
||||
{
|
||||
const int maxlen = 4;
|
||||
|
||||
std::codecvt_utf8<char32_t> c;
|
||||
VERIFY( c.always_noconv() == false );
|
||||
VERIFY( c.encoding() == 0 );
|
||||
VERIFY( c.max_length() == maxlen );
|
||||
|
||||
std::codecvt_utf8<char32_t, 0x10ffff, std::consume_header> c_bom;
|
||||
VERIFY( c_bom.always_noconv() == false );
|
||||
VERIFY( c_bom.encoding() == 0 );
|
||||
VERIFY( c_bom.max_length() == (maxlen + bomlen) );
|
||||
}
|
||||
|
||||
void
|
||||
test03()
|
||||
{
|
||||
#ifdef _GLIBCXX_USE_WCHAR_T
|
||||
const int maxlen = sizeof(wchar_t) == 4 ? 4 : 3;
|
||||
|
||||
std::codecvt_utf8<wchar_t> c;
|
||||
VERIFY( c.always_noconv() == false );
|
||||
VERIFY( c.encoding() == 0 );
|
||||
VERIFY( c.max_length() == maxlen );
|
||||
|
||||
std::codecvt_utf8<wchar_t, 0x10ffff, std::consume_header> c_bom;
|
||||
VERIFY( c_bom.always_noconv() == false );
|
||||
VERIFY( c_bom.encoding() == 0 );
|
||||
VERIFY( c_bom.max_length() == (maxlen + bomlen) );
|
||||
#endif
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
test02();
|
||||
test03();
|
||||
}
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
// Copyright (C) 2017 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
// { dg-do run { target c++11 } }
|
||||
|
||||
#include <codecvt>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
const int bomlen = 3; // UTF-8 BOM is 24 bits
|
||||
const int maxlen = 4;
|
||||
|
||||
void
|
||||
test01()
|
||||
{
|
||||
std::codecvt_utf8_utf16<char16_t> c;
|
||||
VERIFY( c.always_noconv() == false );
|
||||
VERIFY( c.encoding() == 0 );
|
||||
VERIFY( c.max_length() == maxlen );
|
||||
|
||||
std::codecvt_utf8_utf16<char16_t, 0x10ffff, std::consume_header> c_bom;
|
||||
VERIFY( c_bom.always_noconv() == false );
|
||||
VERIFY( c_bom.encoding() == 0 );
|
||||
VERIFY( c_bom.max_length() == (maxlen + bomlen) );
|
||||
}
|
||||
|
||||
void
|
||||
test02()
|
||||
{
|
||||
std::codecvt_utf8_utf16<char32_t> c;
|
||||
VERIFY( c.always_noconv() == false );
|
||||
VERIFY( c.encoding() == 0 );
|
||||
VERIFY( c.max_length() == maxlen );
|
||||
|
||||
std::codecvt_utf8_utf16<char32_t, 0x10ffff, std::consume_header> c_bom;
|
||||
VERIFY( c_bom.always_noconv() == false );
|
||||
VERIFY( c_bom.encoding() == 0 );
|
||||
VERIFY( c_bom.max_length() == (maxlen + bomlen) );
|
||||
}
|
||||
|
||||
void
|
||||
test03()
|
||||
{
|
||||
#ifdef _GLIBCXX_USE_WCHAR_T
|
||||
std::codecvt_utf8_utf16<wchar_t> c;
|
||||
VERIFY( c.always_noconv() == false );
|
||||
VERIFY( c.encoding() == 0 );
|
||||
VERIFY( c.max_length() == maxlen );
|
||||
|
||||
std::codecvt_utf8_utf16<wchar_t, 0x10ffff, std::consume_header> c_bom;
|
||||
VERIFY( c_bom.always_noconv() == false );
|
||||
VERIFY( c_bom.encoding() == 0 );
|
||||
VERIFY( c_bom.max_length() == (maxlen + bomlen) );
|
||||
#endif
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
test02();
|
||||
test03();
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue