#include <config.h>
#include "docstring.h"
+#include "qstring_helpers.h"
#include "unicode.h"
+#include <locale>
+#include <iostream>
+
+#include <QFile>
+
#include <boost/assert.hpp>
namespace lyx {
+
docstring const from_ascii(char const * ascii)
{
docstring s;
}
+std::string const to_ascii(docstring const & ucs4)
+{
+ int const len = ucs4.length();
+ std::string ascii;
+ ascii.resize(len);
+ for (int i = 0; i < len; ++i) {
+ BOOST_ASSERT(ucs4[i] < 0x80);
+ ascii[i] = static_cast<char>(ucs4[i]);
+ }
+ return ascii;
+}
+
+
+IconvProcessor & utf8ToUcs4()
+{
+ static IconvProcessor iconv(ucs4_codeset, "UTF-8");
+ return iconv;
+}
+
+
+
+void utf8_to_ucs4(std::string const & utf8, docstring & ucs4)
+{
+ size_t n = utf8.size();
+ // as utf8 is a multi-byte encoding, there would be at most
+ // n characters:
+ ucs4.resize(n);
+ if (n == 0)
+ return;
+
+ int maxoutsize = n * 4;
+ // basic_string::data() is not recognized by some old gcc version
+ // so we use &(ucs4[0]) instead.
+ char * outbuf = (char *)(&(ucs4[0]));
+ int bytes = utf8ToUcs4().convert(utf8.c_str(), n, outbuf, maxoutsize);
+
+ // adjust to the real converted size
+ ucs4.resize(bytes/4);
+}
+
+
docstring const from_utf8(std::string const & utf8)
{
- std::vector<boost::uint32_t> const ucs4 =
- utf8_to_ucs4(std::vector<char>(utf8.begin(), utf8.end()));
- return docstring(ucs4.begin(), ucs4.end());
+ docstring ucs4;
+ utf8_to_ucs4(utf8, ucs4);
+ return ucs4;
}
std::string const to_utf8(docstring const & ucs4)
{
std::vector<char> const utf8 =
- ucs4_to_utf8(std::vector<boost::uint32_t>(ucs4.begin(), ucs4.end()));
+ ucs4_to_utf8(ucs4.data(), ucs4.size());
return std::string(utf8.begin(), utf8.end());
}
+
+docstring const from_local8bit(std::string const & s)
+{
+ return qstring_to_ucs4(QString::fromLocal8Bit(s.data(), s.length()));
+}
+
+
+const char* to_local8bit_failure::what() const throw()
+{
+ return "A string could not be converted from unicode to the local 8 bit encoding.";
+}
+
+
+std::string const to_local8bit(docstring const & s)
+{
+ // This conversion can fail, depending on input.
+ if (s.empty())
+ return std::string();
+ QByteArray const local = toqstr(s).toLocal8Bit();
+ if (local.size() == 0)
+ throw to_local8bit_failure();
+ return std::string(local.begin(), local.end());
+}
+
+
+docstring const from_filesystem8bit(std::string const & s)
+{
+ QByteArray const encoded(s.c_str(), s.length());
+ return qstring_to_ucs4(QFile::decodeName(encoded));
+}
+
+
+std::string const to_filesystem8bit(docstring const & s)
+{
+ QByteArray const encoded = QFile::encodeName(toqstr(s));
+ return std::string(encoded.begin(), encoded.end());
}
}
return r[len] == '\0';
}
+
+
+lyx::docstring operator+(lyx::docstring const & l, char const * r)
+{
+ lyx::docstring s(l);
+ for (char const * c = r; *c; ++c) {
+ BOOST_ASSERT(static_cast<unsigned char>(*c) < 0x80);
+ s.push_back(*c);
+ }
+ return s;
+}
+
+
+lyx::docstring operator+(char const * l, lyx::docstring const & r)
+{
+ lyx::docstring s;
+ for (char const * c = l; *c; ++c) {
+ BOOST_ASSERT(static_cast<unsigned char>(*c) < 0x80);
+ s.push_back(*c);
+ }
+ s += r;
+ return s;
+}
+
+
+lyx::docstring operator+(lyx::docstring const & l, char r)
+{
+ BOOST_ASSERT(static_cast<unsigned char>(r) < 0x80);
+ return l + lyx::docstring::value_type(r);
+}
+
+
+lyx::docstring operator+(char l, lyx::docstring const & r)
+{
+ BOOST_ASSERT(static_cast<unsigned char>(l) < 0x80);
+ return lyx::docstring::value_type(l) + r;
+}
+
+
+lyx::docstring & operator+=(lyx::docstring & l, char const * r)
+{
+ for (char const * c = r; *c; ++c) {
+ BOOST_ASSERT(static_cast<unsigned char>(*c) < 0x80);
+ l.push_back(*c);
+ }
+ return l;
+}
+
+
+lyx::docstring & operator+=(lyx::docstring & l, char r)
+{
+ BOOST_ASSERT(static_cast<unsigned char>(r) < 0x80);
+ l.push_back(r);
+ return l;
+}
+
+} // namespace lyx
+
+#if (!defined(HAVE_WCHAR_T) || SIZEOF_WCHAR_T != 4) && defined(__GNUC__)
+
+// gcc does not have proper locale facets for lyx::char_type if
+// sizeof(wchar_t) == 2, so we have to implement them on our own.
+
+
+// We get undefined references to these virtual methods. This looks like
+// a bug in gcc. The implementation here does not do anything useful, since
+// it is overriden in ascii_ctype_facet.
+namespace std {
+template<> ctype<lyx::char_type>::~ctype() {}
+template<> bool
+ctype<lyx::char_type>::do_is(ctype<lyx::char_type>::mask, lyx::char_type) const { return false; }
+template<> lyx::char_type const *
+ctype<lyx::char_type>::do_is(const lyx::char_type *, const lyx::char_type *, ctype<lyx::char_type>::mask *) const { return 0; }
+template<> const lyx::char_type *
+ctype<lyx::char_type>::do_scan_is(ctype<lyx::char_type>::mask, const lyx::char_type *, const lyx::char_type *) const { return 0; }
+template<> const lyx::char_type *
+ctype<lyx::char_type>::do_scan_not(ctype<lyx::char_type>::mask, const lyx::char_type *, const lyx::char_type *) const { return 0; }
+template<> lyx::char_type ctype<lyx::char_type>::do_toupper(lyx::char_type) const { return 0; }
+template<> const lyx::char_type * ctype<lyx::char_type>::do_toupper(lyx::char_type *, lyx::char_type const *) const { return 0; }
+template<> lyx::char_type ctype<lyx::char_type>::do_tolower(lyx::char_type) const { return 0; }
+template<> const lyx::char_type * ctype<lyx::char_type>::do_tolower(lyx::char_type *, lyx::char_type const *) const { return 0; }
+template<> lyx::char_type ctype<lyx::char_type>::do_widen(char) const { return 0; }
+template<> const char *
+ctype<lyx::char_type>::do_widen(const char *, const char *, lyx::char_type *) const { return 0; }
+template<> char
+ctype<lyx::char_type>::do_narrow(const lyx::char_type, char) const { return 0; }
+template<> const lyx::char_type *
+ctype<lyx::char_type>::do_narrow(const lyx::char_type *, const lyx::char_type *, char, char *) const { return 0; }
+}
+
+
+namespace lyx {
+
+class ctype_failure : public std::bad_cast {
+public:
+ ctype_failure() throw() : std::bad_cast() {}
+ virtual ~ctype_failure() throw() {}
+ virtual const char* what() const throw()
+ {
+ return "The ctype<lyx::char_type> locale facet does only support ASCII characters on this platform.";
+ }
+};
+
+
+class num_put_failure : public std::bad_cast {
+public:
+ num_put_failure() throw() : std::bad_cast() {}
+ virtual ~num_put_failure() throw() {}
+ virtual const char* what() const throw()
+ {
+ return "The num_put locale facet does only support ASCII characters on this platform.";
+ }
+};
+
+
+/// ctype facet for UCS4 characters. The implementation does only support pure
+/// ASCII, since we do not need anything else for now.
+/// The code is partly stolen from std::ctype<wchar_t> from gcc.
+class ascii_ctype_facet : public std::ctype<lyx::char_type>
+{
+public:
+ typedef lyx::char_type char_type;
+ typedef wctype_t wmask_type;
+ explicit ascii_ctype_facet(size_t refs = 0) : std::ctype<char_type>(refs)
+ {
+ M_initialize_ctype();
+ }
+protected:
+ bool M_narrow_ok;
+ char M_narrow[128];
+ wint_t M_widen[1 + static_cast<unsigned char>(-1)];
+ mask M_bit[16];
+ wmask_type M_wmask[16];
+ wmask_type M_convert_to_wmask(const mask m) const
+ {
+ wmask_type ret;
+ switch (m) {
+ case space: ret = wctype("space"); break;
+ case print: ret = wctype("print"); break;
+ case cntrl: ret = wctype("cntrl"); break;
+ case upper: ret = wctype("upper"); break;
+ case lower: ret = wctype("lower"); break;
+ case alpha: ret = wctype("alpha"); break;
+ case digit: ret = wctype("digit"); break;
+ case punct: ret = wctype("punct"); break;
+ case xdigit: ret = wctype("xdigit"); break;
+ case alnum: ret = wctype("alnum"); break;
+ case graph: ret = wctype("graph"); break;
+ default: ret = wmask_type();
+ }
+ return ret;
+ }
+ void M_initialize_ctype()
+ {
+ wint_t i;
+ for (i = 0; i < 128; ++i) {
+ const int c = wctob(i);
+ if (c == EOF)
+ break;
+ else
+ M_narrow[i] = static_cast<char>(c);
+ }
+ if (i == 128)
+ M_narrow_ok = true;
+ else
+ M_narrow_ok = false;
+ for (size_t i = 0; i < sizeof(M_widen) / sizeof(wint_t); ++i)
+ M_widen[i] = btowc(i);
+
+ for (size_t i = 0; i <= 15; ++i) {
+ M_bit[i] = static_cast<mask>(1 << i);
+ M_wmask[i] = M_convert_to_wmask(M_bit[i]);
+ }
+ }
+ virtual ~ascii_ctype_facet() {}
+ char_type do_toupper(char_type c) const
+ {
+ if (c >= 0x80)
+ throw ctype_failure();
+ return toupper(static_cast<int>(c));
+ }
+ char_type const * do_toupper(char_type * lo, char_type const * hi) const
+ {
+ while (lo < hi) {
+ if (*lo >= 0x80)
+ throw ctype_failure();
+ *lo = toupper(static_cast<int>(*lo));
+ ++lo;
+ }
+ return hi;
+ }
+ char_type do_tolower(char_type c) const
+ {
+ if (c >= 0x80)
+ throw ctype_failure();
+ return tolower(c);
+ }
+ char_type const * do_tolower(char_type * lo, char_type const * hi) const
+ {
+ while (lo < hi) {
+ if (*lo >= 0x80)
+ throw ctype_failure();
+ *lo = tolower(*lo);
+ ++lo;
+ }
+ return hi;
+ }
+ bool do_is(mask m, char_type c) const
+ {
+ if (c >= 0x80)
+ throw ctype_failure();
+ // The code below works because c is in the ASCII range.
+ // We could not use iswctype() which is designed for a 2byte
+ // whar_t without encoding conversion otherwise.
+ bool ret = false;
+ // Generically, 15 (instead of 10) since we don't know the numerical
+ // encoding of the various categories in /usr/include/ctype.h.
+ const size_t bitmasksize = 15;
+ for (size_t bitcur = 0; bitcur <= bitmasksize; ++bitcur)
+ if (m & M_bit[bitcur] &&
+ iswctype(static_cast<int>(c), M_wmask[bitcur])) {
+ ret = true;
+ break;
+ }
+ return ret;
+ }
+ char_type const * do_is(char_type const * lo, char_type const * hi, mask * vec) const
+ {
+ for (;lo < hi; ++vec, ++lo) {
+ if (*lo >= 0x80)
+ throw ctype_failure();
+ // The code below works because c is in the ASCII range.
+ // We could not use iswctype() which is designed for a 2byte
+ // whar_t without encoding conversion otherwise.
+ // Generically, 15 (instead of 10) since we don't know the numerical
+ // encoding of the various categories in /usr/include/ctype.h.
+ const size_t bitmasksize = 15;
+ mask m = 0;
+ for (size_t bitcur = 0; bitcur <= bitmasksize; ++bitcur)
+ if (iswctype(static_cast<int>(*lo), M_wmask[bitcur]))
+ m |= M_bit[bitcur];
+ *vec = m;
+ }
+ return hi;
+ }
+ char_type const * do_scan_is(mask m, char_type const * lo, char_type const * hi) const
+ {
+ while (lo < hi && !this->do_is(m, *lo))
+ ++lo;
+ return lo;
+ }
+ char_type const * do_scan_not(mask m, char_type const * lo, char_type const * hi) const
+ {
+ while (lo < hi && this->do_is(m, *lo) != 0)
+ ++lo;
+ return lo;
+ }
+ char_type do_widen(char c) const
+ {
+ if (static_cast<unsigned char>(c) < 0x80)
+ return c;
+ throw ctype_failure();
+ }
+ const char* do_widen(const char* lo, const char* hi, char_type* dest) const
+ {
+ while (lo < hi) {
+ if (static_cast<unsigned char>(*lo) >= 0x80)
+ throw ctype_failure();
+ *dest = *lo;
+ ++lo;
+ ++dest;
+ }
+ return hi;
+ }
+ char do_narrow(char_type wc, char) const
+ {
+ if (wc < 0x80)
+ return static_cast<char>(wc);
+ throw ctype_failure();
+ }
+ const char_type * do_narrow(const char_type * lo, const char_type * hi, char, char * dest) const
+ {
+ while (lo < hi) {
+ if (*lo < 0x80)
+ *dest = static_cast<char>(*lo);
+ else
+ throw ctype_failure();
+ ++lo;
+ ++dest;
+ }
+ return hi;
+ }
+};
+
+
+/// Facet for outputting numbers to odocstreams as ascii.
+/// Here we simply need defining the virtual do_put functions.
+class ascii_num_put_facet : public std::num_put<lyx::char_type, std::ostreambuf_iterator<lyx::char_type, std::char_traits<lyx::char_type> > >
+{
+ typedef std::ostreambuf_iterator<lyx::char_type, std::char_traits<lyx::char_type> > iter_type;
+public:
+ ascii_num_put_facet(size_t refs = 0) : std::num_put<lyx::char_type, iter_type>(refs) {}
+
+ /// Facet for converting numbers to ascii strings.
+ class string_num_put_facet : public std::num_put<char, std::basic_string<char>::iterator>
+ {
+ public:
+ string_num_put_facet() : std::num_put<char, std::basic_string<char>::iterator>(1) {}
+ };
+
+protected:
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, bool v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, long v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, unsigned long v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+#ifdef _GLIBCXX_USE_LONG_LONG
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, long long v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, unsigned long long v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+#endif
+
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, double v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, long double v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+ iter_type
+ do_put(iter_type oit, std::ios_base & b, char_type fill, void const * v) const
+ {
+ return do_put_helper(oit, b, fill, v);
+ }
+
+private:
+ template <typename ValueType>
+ iter_type
+ do_put_helper(iter_type oit, std::ios_base & b, char_type fill, ValueType v) const
+ {
+ if (fill >= 0x80)
+ throw num_put_failure();
+
+ std::streamsize const sz = b.width() > b.precision() ?
+ b.width() : b.precision();
+ // 64 is large enough, unless width or precision are bigger
+ std::streamsize const wd = (sz > 56 ? sz : 56) + 8;
+ std::string s(wd, '\0');
+ string_num_put_facet f;
+ std::string::const_iterator cit = s.begin();
+ std::string::const_iterator end =
+ f.put(s.begin(), b, fill, v);
+ for (; cit != end; ++cit, ++oit)
+ *oit = *cit;
+
+ return oit;
+ }
+};
+
+
+/// Facet for inputting ascii representations of numbers from idocstreams.
+/// Here we simply need defining the virtual do_get functions.
+class ascii_num_get_facet : public std::num_get<lyx::char_type, std::istreambuf_iterator<lyx::char_type, std::char_traits<lyx::char_type> > >
+{
+ typedef std::istreambuf_iterator<lyx::char_type, std::char_traits<lyx::char_type> > iter_type;
+public:
+ ascii_num_get_facet(size_t refs = 0) : std::num_get<lyx::char_type, iter_type>(refs) {}
+
+ /// Facet for converting ascii representation of numbers to a value.
+ class string_num_get_facet : public std::num_get<char, std::basic_string<char>::iterator>
+ {
+ public:
+ string_num_get_facet() : std::num_get<char, std::basic_string<char>::iterator>(1) {}
+ };
+
+private:
+ bool isNumpunct(lyx::char_type const c) const
+ {
+ /// Only account for the standard numpunct "C" locale facet.
+ return c < 0x80 && (c == '-' || c == '+' || isdigit(c)
+ || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F')
+ || c == 'x' || c == 'X');
+ }
+
+protected:
+ iter_type
+ do_get(iter_type iit, iter_type eit, std::ios_base & b,
+ std::ios_base::iostate & err, long & v) const
+ {
+ std::string s;
+ s.reserve(64);
+ for (; iit != eit && isNumpunct(*iit); ++iit)
+ s += static_cast<char>(*iit);
+ // We add another character, not part of the numpunct facet,
+ // in order to avoid setting the eofbit in the stream state,
+ // which would prevent any further read. The space seems a
+ // good choice here.
+ s += ' ';
+ string_num_get_facet f;
+ f.get(s.begin(), s.end(), b, err, v);
+
+ return iit;
+ }
+};
+
+
+/// class to add our facets to the global locale
+class locale_initializer {
+public:
+ locale_initializer()
+ {
+ std::locale global;
+ std::locale const loc1(global, new ascii_ctype_facet);
+ std::locale const loc2(loc1, new ascii_num_put_facet);
+ std::locale const loc3(loc2, new ascii_num_get_facet);
+ std::locale::global(loc3);
+ }
+};
+
+
+namespace {
+
+/// make sure that our facets get used
+static locale_initializer initializer;
+
+}
+}
+#endif
projects / lyx.git / blobdiff