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livetrax/libs/glibmm2/glib/glibmm/ustring.cc
Paul Davis 449aab3c46 rollback to 3428, before the mysterious removal of libs/* at 3431/3432
git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf
2008-06-02 21:41:35 +00:00

1225 lines
32 KiB
C++

// -*- c++ -*-
/* $Id: ustring.cc 369 2007-01-20 10:19:33Z daniel $ */
/* Copyright (C) 2002 The gtkmm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <glibmm/ustring.h>
#include <glibmm/convert.h>
#include <glibmm/error.h>
#include <glibmm/utility.h>
#include <algorithm>
#include <iostream>
#include <glibmmconfig.h>
GLIBMM_USING_STD(find)
namespace
{
using Glib::ustring;
// Little helper to make the conversion from gunichar to UTF-8 a one-liner.
//
struct UnicharToUtf8
{
char buf[6];
ustring::size_type len;
explicit UnicharToUtf8(gunichar uc)
: len (g_unichar_to_utf8(uc, buf)) {}
};
// All utf8_*_offset() functions return npos if offset is out of range.
// The caller should decide if npos is a valid argument and just marks
// the whole string, or if it is not allowed (e.g. for start positions).
// In the latter case std::out_of_range should be thrown, but usually
// std::string will do that for us.
// First overload: stop on '\0' character.
static
ustring::size_type utf8_byte_offset(const char* str, ustring::size_type offset)
{
if(offset == ustring::npos)
return ustring::npos;
const char *const utf8_skip = g_utf8_skip;
const char* p = str;
for(; offset != 0; --offset)
{
const unsigned int c = static_cast<unsigned char>(*p);
if(c == 0)
return ustring::npos;
p += utf8_skip[c];
}
return (p - str);
}
// Second overload: stop when reaching maxlen.
static
ustring::size_type utf8_byte_offset(const char* str, ustring::size_type offset,
ustring::size_type maxlen)
{
if(offset == ustring::npos)
return ustring::npos;
const char *const utf8_skip = g_utf8_skip;
const char *const pend = str + maxlen;
const char* p = str;
for(; offset != 0; --offset)
{
if(p >= pend)
return ustring::npos;
p += utf8_skip[static_cast<unsigned char>(*p)];
}
return (p - str);
}
// Third overload: stop when reaching str.size().
//
inline
ustring::size_type utf8_byte_offset(const std::string& str, ustring::size_type offset)
{
return utf8_byte_offset(str.data(), offset, str.size());
}
// Takes UTF-8 character offset and count in ci and cn.
// Returns the byte offset and count in i and n.
//
struct Utf8SubstrBounds
{
ustring::size_type i;
ustring::size_type n;
Utf8SubstrBounds(const std::string& str, ustring::size_type ci, ustring::size_type cn)
:
i (utf8_byte_offset(str, ci)),
n (ustring::npos)
{
if(i != ustring::npos)
n = utf8_byte_offset(str.data() + i, cn, str.size() - i);
}
};
// Converts byte offset to UTF-8 character offset.
inline
ustring::size_type utf8_char_offset(const std::string& str, ustring::size_type offset)
{
if(offset == ustring::npos)
return ustring::npos;
const char *const pdata = str.data();
return g_utf8_pointer_to_offset(pdata, pdata + offset);
}
// Helper to implement ustring::find_first_of() and find_first_not_of().
// Returns the UTF-8 character offset, or ustring::npos if not found.
static
ustring::size_type utf8_find_first_of(const std::string& str, ustring::size_type offset,
const char* utf8_match, long utf8_match_size,
bool find_not_of)
{
const ustring::size_type byte_offset = utf8_byte_offset(str, offset);
if(byte_offset == ustring::npos)
return ustring::npos;
long ucs4_match_size = 0;
const Glib::ScopedPtr<gunichar> ucs4_match
(g_utf8_to_ucs4_fast(utf8_match, utf8_match_size, &ucs4_match_size));
const gunichar *const match_begin = ucs4_match.get();
const gunichar *const match_end = match_begin + ucs4_match_size;
const char *const str_begin = str.data();
const char *const str_end = str_begin + str.size();
for(const char* pstr = str_begin + byte_offset;
pstr < str_end;
pstr = g_utf8_next_char(pstr))
{
const gunichar *const pfound = std::find(match_begin, match_end, g_utf8_get_char(pstr));
if((pfound != match_end) != find_not_of)
return offset;
++offset;
}
return ustring::npos;
}
// Helper to implement ustring::find_last_of() and find_last_not_of().
// Returns the UTF-8 character offset, or ustring::npos if not found.
static
ustring::size_type utf8_find_last_of(const std::string& str, ustring::size_type offset,
const char* utf8_match, long utf8_match_size,
bool find_not_of)
{
long ucs4_match_size = 0;
const Glib::ScopedPtr<gunichar> ucs4_match
(g_utf8_to_ucs4_fast(utf8_match, utf8_match_size, &ucs4_match_size));
const gunichar *const match_begin = ucs4_match.get();
const gunichar *const match_end = match_begin + ucs4_match_size;
const char *const str_begin = str.data();
const char* pstr = str_begin;
// Set pstr one byte beyond the actual start position.
const ustring::size_type byte_offset = utf8_byte_offset(str, offset);
pstr += (byte_offset < str.size()) ? byte_offset + 1 : str.size();
while(pstr > str_begin)
{
// Move to previous character.
do
--pstr;
while((static_cast<unsigned char>(*pstr) & 0xC0u) == 0x80);
const gunichar *const pfound = std::find(match_begin, match_end, g_utf8_get_char(pstr));
if((pfound != match_end) != find_not_of)
return g_utf8_pointer_to_offset(str_begin, pstr);
}
return ustring::npos;
}
} // anonymous namespace
namespace Glib
{
#ifndef GLIBMM_HAVE_ALLOWS_STATIC_INLINE_NPOS
// Initialize static member here,
// because the compiler did not allow us do it inline.
const ustring::size_type ustring::npos = std::string::npos;
#endif
/*
* We need our own version of g_utf8_get_char(), because the std::string
* iterator is not necessarily a plain pointer (it's in fact not in GCC's
* libstdc++-v3). Copying the UTF-8 data into a temporary buffer isn't an
* option since this operation is quite time critical. The implementation
* is quite different from g_utf8_get_char() -- both more generic and likely
* faster.
*
* By looking at the first byte of a UTF-8 character one can determine the
* number of bytes used. GLib offers the g_utf8_skip[] array for this purpose,
* but accessing this global variable would, on IA32 at least, introduce
* a function call to fetch the Global Offset Table, plus two levels of
* indirection in order to read the value. Even worse, fetching the GOT is
* always done right at the start of the function instead of the branch that
* actually uses the variable.
*
* Fortunately, there's a better way to get the byte count. As this table
* shows, there's a nice regular pattern in the UTF-8 encoding scheme:
*
* 0x00000000 - 0x0000007F: 0xxxxxxx
* 0x00000080 - 0x000007FF: 110xxxxx 10xxxxxx
* 0x00000800 - 0x0000FFFF: 1110xxxx 10xxxxxx 10xxxxxx
* 0x00010000 - 0x001FFFFF: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
* 0x00200000 - 0x03FFFFFF: 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
* 0x04000000 - 0x7FFFFFFF: 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
*
* Except for the single byte case, the number of leading 1-bits equals the
* byte count. All that is needed is to shift the first byte to the left
* until bit 7 becomes 0. Naturally, doing so requires a loop -- but since
* we already have one, no additional cost is introduced. This shifting can
* further be combined with the computation of the bitmask needed to eliminate
* the leading length bits, thus saving yet another register.
*
* Note: If you change this code, it is advisable to also review what the
* compiler makes of it in the assembler output. Except for some pointless
* register moves, the generated code is sufficiently close to the optimum
* with GCC 4.1.2 on x86_64.
*/
gunichar get_unichar_from_std_iterator(std::string::const_iterator pos)
{
unsigned int result = static_cast<unsigned char>(*pos);
if((result & 0x80) != 0)
{
unsigned int mask = 0x40;
do
{
result <<= 6;
const unsigned int c = static_cast<unsigned char>(*++pos);
mask <<= 5;
result += c - 0x80;
}
while((result & mask) != 0);
result &= mask - 1;
}
return result;
}
/**** Glib::ustring ********************************************************/
ustring::ustring()
:
string_ ()
{}
ustring::ustring(const ustring& other)
:
string_ (other.string_)
{}
ustring::ustring(const ustring& src, ustring::size_type i, ustring::size_type n)
:
string_ ()
{
const Utf8SubstrBounds bounds (src.string_, i, n);
string_.assign(src.string_, bounds.i, bounds.n);
}
ustring::ustring(const char* src, ustring::size_type n)
:
string_ (src, utf8_byte_offset(src, n))
{}
ustring::ustring(const char* src)
:
string_ (src)
{}
ustring::ustring(ustring::size_type n, gunichar uc)
:
string_ ()
{
if(uc < 0x80)
{
// Optimize the probably most common case.
string_.assign(n, static_cast<char>(uc));
}
else
{
const UnicharToUtf8 conv (uc);
string_.reserve(n * conv.len);
for(; n > 0; --n)
string_.append(conv.buf, conv.len);
}
}
ustring::ustring(ustring::size_type n, char c)
:
string_ (n, c)
{}
ustring::ustring(const std::string& src)
:
string_ (src)
{}
ustring::~ustring()
{}
void ustring::swap(ustring& other)
{
string_.swap(other.string_);
}
/**** Glib::ustring::operator=() *******************************************/
ustring& ustring::operator=(const ustring& other)
{
string_ = other.string_;
return *this;
}
ustring& ustring::operator=(const std::string& src)
{
string_ = src;
return *this;
}
ustring& ustring::operator=(const char* src)
{
string_ = src;
return *this;
}
ustring& ustring::operator=(gunichar uc)
{
const UnicharToUtf8 conv (uc);
string_.assign(conv.buf, conv.len);
return *this;
}
ustring& ustring::operator=(char c)
{
string_ = c;
return *this;
}
/**** Glib::ustring::assign() **********************************************/
ustring& ustring::assign(const ustring& src)
{
string_ = src.string_;
return *this;
}
ustring& ustring::assign(const ustring& src, ustring::size_type i, ustring::size_type n)
{
const Utf8SubstrBounds bounds (src.string_, i, n);
string_.assign(src.string_, bounds.i, bounds.n);
return *this;
}
ustring& ustring::assign(const char* src, ustring::size_type n)
{
string_.assign(src, utf8_byte_offset(src, n));
return *this;
}
ustring& ustring::assign(const char* src)
{
string_ = src;
return *this;
}
ustring& ustring::assign(ustring::size_type n, gunichar uc)
{
ustring temp (n, uc);
string_.swap(temp.string_);
return *this;
}
ustring& ustring::assign(ustring::size_type n, char c)
{
string_.assign(n, c);
return *this;
}
/**** Glib::ustring::operator+=() ******************************************/
ustring& ustring::operator+=(const ustring& src)
{
string_ += src.string_;
return *this;
}
ustring& ustring::operator+=(const char* src)
{
string_ += src;
return *this;
}
ustring& ustring::operator+=(gunichar uc)
{
const UnicharToUtf8 conv (uc);
string_.append(conv.buf, conv.len);
return *this;
}
ustring& ustring::operator+=(char c)
{
string_ += c;
return *this;
}
/**** Glib::ustring::push_back() *******************************************/
void ustring::push_back(gunichar uc)
{
const UnicharToUtf8 conv (uc);
string_.append(conv.buf, conv.len);
}
void ustring::push_back(char c)
{
string_ += c;
}
/**** Glib::ustring::append() **********************************************/
ustring& ustring::append(const ustring& src)
{
string_ += src.string_;
return *this;
}
ustring& ustring::append(const ustring& src, ustring::size_type i, ustring::size_type n)
{
const Utf8SubstrBounds bounds (src.string_, i, n);
string_.append(src.string_, bounds.i, bounds.n);
return *this;
}
ustring& ustring::append(const char* src, ustring::size_type n)
{
string_.append(src, utf8_byte_offset(src, n));
return *this;
}
ustring& ustring::append(const char* src)
{
string_ += src;
return *this;
}
ustring& ustring::append(ustring::size_type n, gunichar uc)
{
string_.append(ustring(n, uc).string_);
return *this;
}
ustring& ustring::append(ustring::size_type n, char c)
{
string_.append(n, c);
return *this;
}
/**** Glib::ustring::insert() **********************************************/
ustring& ustring::insert(ustring::size_type i, const ustring& src)
{
string_.insert(utf8_byte_offset(string_, i), src.string_);
return *this;
}
ustring& ustring::insert(ustring::size_type i, const ustring& src,
ustring::size_type i2, ustring::size_type n)
{
const Utf8SubstrBounds bounds2 (src.string_, i2, n);
string_.insert(utf8_byte_offset(string_, i), src.string_, bounds2.i, bounds2.n);
return *this;
}
ustring& ustring::insert(ustring::size_type i, const char* src, ustring::size_type n)
{
string_.insert(utf8_byte_offset(string_, i), src, utf8_byte_offset(src, n));
return *this;
}
ustring& ustring::insert(ustring::size_type i, const char* src)
{
string_.insert(utf8_byte_offset(string_, i), src);
return *this;
}
ustring& ustring::insert(ustring::size_type i, ustring::size_type n, gunichar uc)
{
string_.insert(utf8_byte_offset(string_, i), ustring(n, uc).string_);
return *this;
}
ustring& ustring::insert(ustring::size_type i, ustring::size_type n, char c)
{
string_.insert(utf8_byte_offset(string_, i), n, c);
return *this;
}
ustring::iterator ustring::insert(ustring::iterator p, gunichar uc)
{
const size_type offset = p.base() - string_.begin();
const UnicharToUtf8 conv (uc);
string_.insert(offset, conv.buf, conv.len);
return iterator(string_.begin() + offset);
}
ustring::iterator ustring::insert(ustring::iterator p, char c)
{
return iterator(string_.insert(p.base(), c));
}
void ustring::insert(ustring::iterator p, ustring::size_type n, gunichar uc)
{
string_.insert(p.base() - string_.begin(), ustring(n, uc).string_);
}
void ustring::insert(ustring::iterator p, ustring::size_type n, char c)
{
string_.insert(p.base(), n, c);
}
/**** Glib::ustring::replace() *********************************************/
ustring& ustring::replace(ustring::size_type i, ustring::size_type n, const ustring& src)
{
const Utf8SubstrBounds bounds (string_, i, n);
string_.replace(bounds.i, bounds.n, src.string_);
return *this;
}
ustring& ustring::replace(ustring::size_type i, ustring::size_type n,
const ustring& src, ustring::size_type i2, ustring::size_type n2)
{
const Utf8SubstrBounds bounds (string_, i, n);
const Utf8SubstrBounds bounds2 (src.string_, i2, n2);
string_.replace(bounds.i, bounds.n, src.string_, bounds2.i, bounds2.n);
return *this;
}
ustring& ustring::replace(ustring::size_type i, ustring::size_type n,
const char* src, ustring::size_type n2)
{
const Utf8SubstrBounds bounds (string_, i, n);
string_.replace(bounds.i, bounds.n, src, utf8_byte_offset(src, n2));
return *this;
}
ustring& ustring::replace(ustring::size_type i, ustring::size_type n, const char* src)
{
const Utf8SubstrBounds bounds (string_, i, n);
string_.replace(bounds.i, bounds.n, src);
return *this;
}
ustring& ustring::replace(ustring::size_type i, ustring::size_type n,
ustring::size_type n2, gunichar uc)
{
const Utf8SubstrBounds bounds (string_, i, n);
string_.replace(bounds.i, bounds.n, ustring(n2, uc).string_);
return *this;
}
ustring& ustring::replace(ustring::size_type i, ustring::size_type n,
ustring::size_type n2, char c)
{
const Utf8SubstrBounds bounds (string_, i, n);
string_.replace(bounds.i, bounds.n, n2, c);
return *this;
}
ustring& ustring::replace(ustring::iterator pbegin, ustring::iterator pend, const ustring& src)
{
string_.replace(pbegin.base(), pend.base(), src.string_);
return *this;
}
ustring& ustring::replace(ustring::iterator pbegin, ustring::iterator pend,
const char* src, ustring::size_type n)
{
string_.replace(pbegin.base(), pend.base(), src, utf8_byte_offset(src, n));
return *this;
}
ustring& ustring::replace(ustring::iterator pbegin, ustring::iterator pend, const char* src)
{
string_.replace(pbegin.base(), pend.base(), src);
return *this;
}
ustring& ustring::replace(ustring::iterator pbegin, ustring::iterator pend,
ustring::size_type n, gunichar uc)
{
string_.replace(pbegin.base(), pend.base(), ustring(n, uc).string_);
return *this;
}
ustring& ustring::replace(ustring::iterator pbegin, ustring::iterator pend,
ustring::size_type n, char c)
{
string_.replace(pbegin.base(), pend.base(), n, c);
return *this;
}
/**** Glib::ustring::erase() ***********************************************/
void ustring::clear()
{
string_.erase();
}
ustring& ustring::erase(ustring::size_type i, ustring::size_type n)
{
const Utf8SubstrBounds bounds (string_, i, n);
string_.erase(bounds.i, bounds.n);
return *this;
}
ustring& ustring::erase()
{
string_.erase();
return *this;
}
ustring::iterator ustring::erase(ustring::iterator p)
{
return iterator(string_.erase(p.base()));
}
ustring::iterator ustring::erase(ustring::iterator pbegin, ustring::iterator pend)
{
return iterator(string_.erase(pbegin.base(), pend.base()));
}
/**** Glib::ustring::compare() *********************************************/
int ustring::compare(const ustring& rhs) const
{
return g_utf8_collate(string_.c_str(), rhs.string_.c_str());
}
int ustring::compare(const char* rhs) const
{
return g_utf8_collate(string_.c_str(), rhs);
}
int ustring::compare(ustring::size_type i, ustring::size_type n, const ustring& rhs) const
{
return ustring(*this, i, n).compare(rhs);
}
int ustring::compare(ustring::size_type i, ustring::size_type n,
const ustring& rhs, ustring::size_type i2, ustring::size_type n2) const
{
return ustring(*this, i, n).compare(ustring(rhs, i2, n2));
}
int ustring::compare(ustring::size_type i, ustring::size_type n,
const char* rhs, ustring::size_type n2) const
{
return ustring(*this, i, n).compare(ustring(rhs, n2));
}
int ustring::compare(ustring::size_type i, ustring::size_type n, const char* rhs) const
{
return ustring(*this, i, n).compare(rhs);
}
/**** Glib::ustring -- index access ****************************************/
ustring::value_type ustring::operator[](ustring::size_type i) const
{
return g_utf8_get_char(g_utf8_offset_to_pointer(string_.data(), i));
}
ustring::value_type ustring::at(ustring::size_type i) const
{
const size_type byte_offset = utf8_byte_offset(string_, i);
// Throws std::out_of_range if the index is invalid.
return g_utf8_get_char(&string_.at(byte_offset));
}
/**** Glib::ustring -- iterator access *************************************/
ustring::iterator ustring::begin()
{
return iterator(string_.begin());
}
ustring::iterator ustring::end()
{
return iterator(string_.end());
}
ustring::const_iterator ustring::begin() const
{
return const_iterator(string_.begin());
}
ustring::const_iterator ustring::end() const
{
return const_iterator(string_.end());
}
ustring::reverse_iterator ustring::rbegin()
{
return reverse_iterator(iterator(string_.end()));
}
ustring::reverse_iterator ustring::rend()
{
return reverse_iterator(iterator(string_.begin()));
}
ustring::const_reverse_iterator ustring::rbegin() const
{
return const_reverse_iterator(const_iterator(string_.end()));
}
ustring::const_reverse_iterator ustring::rend() const
{
return const_reverse_iterator(const_iterator(string_.begin()));
}
/**** Glib::ustring::find() ************************************************/
ustring::size_type ustring::find(const ustring& str, ustring::size_type i) const
{
return utf8_char_offset(string_, string_.find(str.string_, utf8_byte_offset(string_, i)));
}
ustring::size_type ustring::find(const char* str, ustring::size_type i, ustring::size_type n) const
{
return utf8_char_offset(string_, string_.find(str, utf8_byte_offset(string_, i),
utf8_byte_offset(str, n)));
}
ustring::size_type ustring::find(const char* str, ustring::size_type i) const
{
return utf8_char_offset(string_, string_.find(str, utf8_byte_offset(string_, i)));
}
ustring::size_type ustring::find(gunichar uc, ustring::size_type i) const
{
const UnicharToUtf8 conv (uc);
return utf8_char_offset(string_, string_.find(conv.buf, utf8_byte_offset(string_, i), conv.len));
}
ustring::size_type ustring::find(char c, ustring::size_type i) const
{
return utf8_char_offset(string_, string_.find(c, utf8_byte_offset(string_, i)));
}
/**** Glib::ustring::rfind() ***********************************************/
ustring::size_type ustring::rfind(const ustring& str, ustring::size_type i) const
{
return utf8_char_offset(string_, string_.rfind(str.string_, utf8_byte_offset(string_, i)));
}
ustring::size_type ustring::rfind(const char* str, ustring::size_type i,
ustring::size_type n) const
{
return utf8_char_offset(string_, string_.rfind(str, utf8_byte_offset(string_, i),
utf8_byte_offset(str, n)));
}
ustring::size_type ustring::rfind(const char* str, ustring::size_type i) const
{
return utf8_char_offset(string_, string_.rfind(str, utf8_byte_offset(string_, i)));
}
ustring::size_type ustring::rfind(gunichar uc, ustring::size_type i) const
{
const UnicharToUtf8 conv (uc);
return utf8_char_offset(string_, string_.rfind(conv.buf, utf8_byte_offset(string_, i), conv.len));
}
ustring::size_type ustring::rfind(char c, ustring::size_type i) const
{
return utf8_char_offset(string_, string_.rfind(c, utf8_byte_offset(string_, i)));
}
/**** Glib::ustring::find_first_of() ***************************************/
ustring::size_type ustring::find_first_of(const ustring& match, ustring::size_type i) const
{
return utf8_find_first_of(string_, i, match.string_.data(), match.string_.size(), false);
}
ustring::size_type ustring::find_first_of(const char* match,
ustring::size_type i, ustring::size_type n) const
{
return utf8_find_first_of(string_, i, match, n, false);
}
ustring::size_type ustring::find_first_of(const char* match, ustring::size_type i) const
{
return utf8_find_first_of(string_, i, match, -1, false);
}
ustring::size_type ustring::find_first_of(gunichar uc, ustring::size_type i) const
{
return find(uc, i);
}
ustring::size_type ustring::find_first_of(char c, ustring::size_type i) const
{
return find(c, i);
}
/**** Glib::ustring::find_last_of() ****************************************/
ustring::size_type ustring::find_last_of(const ustring& match, ustring::size_type i) const
{
return utf8_find_last_of(string_, i, match.string_.data(), match.string_.size(), false);
}
ustring::size_type ustring::find_last_of(const char* match,
ustring::size_type i, ustring::size_type n) const
{
return utf8_find_last_of(string_, i, match, n, false);
}
ustring::size_type ustring::find_last_of(const char* match, ustring::size_type i) const
{
return utf8_find_last_of(string_, i, match, -1, false);
}
ustring::size_type ustring::find_last_of(gunichar uc, ustring::size_type i) const
{
return rfind(uc, i);
}
ustring::size_type ustring::find_last_of(char c, ustring::size_type i) const
{
return rfind(c, i);
}
/**** Glib::ustring::find_first_not_of() ***********************************/
ustring::size_type ustring::find_first_not_of(const ustring& match, ustring::size_type i) const
{
return utf8_find_first_of(string_, i, match.string_.data(), match.string_.size(), true);
}
ustring::size_type ustring::find_first_not_of(const char* match,
ustring::size_type i, ustring::size_type n) const
{
return utf8_find_first_of(string_, i, match, n, true);
}
ustring::size_type ustring::find_first_not_of(const char* match, ustring::size_type i) const
{
return utf8_find_first_of(string_, i, match, -1, true);
}
// Unfortunately, all of the find_*_not_of() methods for single
// characters need their own special implementation.
//
ustring::size_type ustring::find_first_not_of(gunichar uc, ustring::size_type i) const
{
const size_type bi = utf8_byte_offset(string_, i);
if(bi != npos)
{
const char *const pbegin = string_.data();
const char *const pend = pbegin + string_.size();
for(const char* p = pbegin + bi;
p < pend;
p = g_utf8_next_char(p), ++i)
{
if(g_utf8_get_char(p) != uc)
return i;
}
}
return npos;
}
ustring::size_type ustring::find_first_not_of(char c, ustring::size_type i) const
{
const size_type bi = utf8_byte_offset(string_, i);
if(bi != npos)
{
const char *const pbegin = string_.data();
const char *const pend = pbegin + string_.size();
for(const char* p = pbegin + bi;
p < pend;
p = g_utf8_next_char(p), ++i)
{
if(*p != c)
return i;
}
}
return npos;
}
/**** Glib::ustring::find_last_not_of() ************************************/
ustring::size_type ustring::find_last_not_of(const ustring& match, ustring::size_type i) const
{
return utf8_find_last_of(string_, i, match.string_.data(), match.string_.size(), true);
}
ustring::size_type ustring::find_last_not_of(const char* match,
ustring::size_type i, ustring::size_type n) const
{
return utf8_find_last_of(string_, i, match, n, true);
}
ustring::size_type ustring::find_last_not_of(const char* match, ustring::size_type i) const
{
return utf8_find_last_of(string_, i, match, -1, true);
}
// Unfortunately, all of the find_*_not_of() methods for single
// characters need their own special implementation.
//
ustring::size_type ustring::find_last_not_of(gunichar uc, ustring::size_type i) const
{
const char *const pbegin = string_.data();
const char *const pend = pbegin + string_.size();
size_type i_cur = 0;
size_type i_found = npos;
for(const char* p = pbegin;
p < pend && i_cur <= i;
p = g_utf8_next_char(p), ++i_cur)
{
if(g_utf8_get_char(p) != uc)
i_found = i_cur;
}
return i_found;
}
ustring::size_type ustring::find_last_not_of(char c, ustring::size_type i) const
{
const char *const pbegin = string_.data();
const char *const pend = pbegin + string_.size();
size_type i_cur = 0;
size_type i_found = npos;
for(const char* p = pbegin;
p < pend && i_cur <= i;
p = g_utf8_next_char(p), ++i_cur)
{
if(*p != c)
i_found = i_cur;
}
return i_found;
}
/**** Glib::ustring -- get size and resize *********************************/
bool ustring::empty() const
{
return string_.empty();
}
ustring::size_type ustring::size() const
{
const char *const pdata = string_.data();
return g_utf8_pointer_to_offset(pdata, pdata + string_.size());
}
ustring::size_type ustring::length() const
{
const char *const pdata = string_.data();
return g_utf8_pointer_to_offset(pdata, pdata + string_.size());
}
ustring::size_type ustring::bytes() const
{
return string_.size();
}
ustring::size_type ustring::capacity() const
{
return string_.capacity();
}
ustring::size_type ustring::max_size() const
{
return string_.max_size();
}
void ustring::resize(ustring::size_type n, gunichar uc)
{
const size_type size_now = size();
if(n < size_now)
erase(n, npos);
else if(n > size_now)
append(n - size_now, uc);
}
void ustring::resize(ustring::size_type n, char c)
{
const size_type size_now = size();
if(n < size_now)
erase(n, npos);
else if(n > size_now)
string_.append(n - size_now, c);
}
void ustring::reserve(ustring::size_type n)
{
string_.reserve(n);
}
/**** Glib::ustring -- C string access *************************************/
const char* ustring::data() const
{
return string_.data();
}
const char* ustring::c_str() const
{
return string_.c_str();
}
// Note that copy() requests UTF-8 character offsets as
// parameters, but returns the number of copied bytes.
//
ustring::size_type ustring::copy(char* dest, ustring::size_type n, ustring::size_type i) const
{
const Utf8SubstrBounds bounds (string_, i, n);
return string_.copy(dest, bounds.n, bounds.i);
}
/**** Glib::ustring -- UTF-8 utilities *************************************/
bool ustring::validate() const
{
return (g_utf8_validate(string_.data(), string_.size(), 0) != 0);
}
bool ustring::validate(ustring::iterator& first_invalid)
{
const char *const pdata = string_.data();
const char* valid_end = pdata;
const int is_valid = g_utf8_validate(pdata, string_.size(), &valid_end);
first_invalid = iterator(string_.begin() + (valid_end - pdata));
return (is_valid != 0);
}
bool ustring::validate(ustring::const_iterator& first_invalid) const
{
const char *const pdata = string_.data();
const char* valid_end = pdata;
const int is_valid = g_utf8_validate(pdata, string_.size(), &valid_end);
first_invalid = const_iterator(string_.begin() + (valid_end - pdata));
return (is_valid != 0);
}
bool ustring::is_ascii() const
{
const char* p = string_.data();
const char *const pend = p + string_.size();
for(; p != pend; ++p)
{
if((static_cast<unsigned char>(*p) & 0x80u) != 0)
return false;
}
return true;
}
ustring ustring::normalize(NormalizeMode mode) const
{
const ScopedPtr<char> buf (g_utf8_normalize(string_.data(), string_.size(),
static_cast<GNormalizeMode>(int(mode))));
return ustring(buf.get());
}
ustring ustring::uppercase() const
{
const ScopedPtr<char> buf (g_utf8_strup(string_.data(), string_.size()));
return ustring(buf.get());
}
ustring ustring::lowercase() const
{
const ScopedPtr<char> buf (g_utf8_strdown(string_.data(), string_.size()));
return ustring(buf.get());
}
ustring ustring::casefold() const
{
const ScopedPtr<char> buf (g_utf8_casefold(string_.data(), string_.size()));
return ustring(buf.get());
}
std::string ustring::collate_key() const
{
const ScopedPtr<char> buf (g_utf8_collate_key(string_.data(), string_.size()));
return std::string(buf.get());
}
std::string ustring::casefold_collate_key() const
{
char *const casefold_buf = g_utf8_casefold(string_.data(), string_.size());
char *const key_buf = g_utf8_collate_key(casefold_buf, -1);
g_free(casefold_buf);
return std::string(ScopedPtr<char>(key_buf).get());
}
/**** Glib::ustring::SequenceToString **************************************/
ustring::SequenceToString<Glib::ustring::iterator,gunichar>
::SequenceToString(Glib::ustring::iterator pbegin, Glib::ustring::iterator pend)
:
std::string(pbegin.base(), pend.base())
{}
ustring::SequenceToString<Glib::ustring::const_iterator,gunichar>
::SequenceToString(Glib::ustring::const_iterator pbegin, Glib::ustring::const_iterator pend)
:
std::string(pbegin.base(), pend.base())
{}
/**** Glib::ustring -- stream I/O operators ********************************/
std::istream& operator>>(std::istream& is, Glib::ustring& utf8_string)
{
std::string locale_string;
is >> locale_string;
#ifdef GLIBMM_EXCEPTIONS_ENABLED
utf8_string = Glib::locale_to_utf8(locale_string);
#else
std::auto_ptr<Glib::Error> error; //TODO: Check this?
utf8_string = Glib::locale_to_utf8(locale_string, error);
#endif //GLIBMM_EXCEPTIONS_ENABLED
return is;
}
std::ostream& operator<<(std::ostream& os, const Glib::ustring& utf8_string)
{
#ifdef GLIBMM_EXCEPTIONS_ENABLED
os << Glib::locale_from_utf8(utf8_string);
#else
std::auto_ptr<Glib::Error> error; //TODO: Check this?
os << Glib::locale_from_utf8(utf8_string, error);
#endif //GLIBMM_EXCEPTIONS_ENABLED
return os;
}
} // namespace Glib