1208 lines
31 KiB
C++
1208 lines
31 KiB
C++
// -*- c++ -*-
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/* $Id$ */
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/* Copyright (C) 2002 The gtkmm Development Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <glibmm/ustring.h>
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#include <glibmm/convert.h>
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#include <glibmm/error.h>
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#include <glibmm/utility.h>
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#include <algorithm>
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#include <iostream>
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#include <glibmmconfig.h>
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GLIBMM_USING_STD(find)
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namespace
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{
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using Glib::ustring;
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// Little helper to make the conversion from gunichar to UTF-8 a one-liner.
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//
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struct UnicharToUtf8
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{
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char buf[6];
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ustring::size_type len;
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explicit UnicharToUtf8(gunichar uc)
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: len (g_unichar_to_utf8(uc, buf)) {}
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};
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// All utf8_*_offset() functions return npos if offset is out of range.
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// The caller should decide if npos is a valid argument and just marks
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// the whole string, or if it is not allowed (e.g. for start positions).
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// In the latter case std::out_of_range should be thrown, but usually
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// std::string will do that for us.
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// First overload: stop on '\0' character.
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//
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static ustring::size_type utf8_byte_offset(const char* str, ustring::size_type offset)
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{
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if(offset == ustring::npos)
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return ustring::npos;
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const char *const utf8_skip = g_utf8_skip;
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const char* p = str;
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for(; offset != 0; --offset)
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{
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const unsigned int c = static_cast<unsigned char>(*p);
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if(c == 0)
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return ustring::npos;
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p += utf8_skip[c];
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}
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return (p - str);
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}
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// Second overload: stop when reaching maxlen.
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//
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static ustring::size_type utf8_byte_offset(const char* str, ustring::size_type offset,
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ustring::size_type maxlen)
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{
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if(offset == ustring::npos)
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return ustring::npos;
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const char *const utf8_skip = g_utf8_skip;
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const char *const pend = str + maxlen;
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const char* p = str;
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for(; offset != 0; --offset)
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{
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if(p >= pend)
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return ustring::npos;
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p += utf8_skip[static_cast<unsigned char>(*p)];
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}
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return (p - str);
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}
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// Third overload: stop when reaching str.size().
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//
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inline
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ustring::size_type utf8_byte_offset(const std::string& str, ustring::size_type offset)
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{
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return utf8_byte_offset(str.data(), offset, str.size());
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}
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// Takes UTF-8 character offset and count in ci and cn.
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// Returns the byte offset and count in i and n.
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//
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struct Utf8SubstrBounds
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{
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ustring::size_type i;
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ustring::size_type n;
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Utf8SubstrBounds(const std::string& str, ustring::size_type ci, ustring::size_type cn)
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:
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i (utf8_byte_offset(str, ci)),
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n (ustring::npos)
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{
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if(i != ustring::npos)
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n = utf8_byte_offset(str.data() + i, cn, str.size() - i);
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}
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};
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// Converts byte offset to UTF-8 character offset.
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inline
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ustring::size_type utf8_char_offset(const std::string& str, ustring::size_type offset)
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{
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if(offset == ustring::npos)
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return ustring::npos;
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const char *const pdata = str.data();
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return g_utf8_pointer_to_offset(pdata, pdata + offset);
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}
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// Helper to implement ustring::find_first_of() and find_first_not_of().
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// Returns the UTF-8 character offset, or ustring::npos if not found.
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//
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ustring::size_type utf8_find_first_of(const std::string& str, ustring::size_type offset,
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const char* utf8_match, long utf8_match_size,
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bool find_not_of)
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{
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const ustring::size_type byte_offset = utf8_byte_offset(str, offset);
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if(byte_offset == ustring::npos)
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return ustring::npos;
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long ucs4_match_size = 0;
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const Glib::ScopedPtr<gunichar> ucs4_match
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(g_utf8_to_ucs4_fast(utf8_match, utf8_match_size, &ucs4_match_size));
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const gunichar *const match_begin = ucs4_match.get();
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const gunichar *const match_end = match_begin + ucs4_match_size;
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const char *const str_begin = str.data();
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const char *const str_end = str_begin + str.size();
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for(const char* pstr = str_begin + byte_offset;
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pstr < str_end;
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pstr = g_utf8_next_char(pstr))
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{
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const gunichar *const pfound = std::find(match_begin, match_end, g_utf8_get_char(pstr));
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if((pfound != match_end) != find_not_of)
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return offset;
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++offset;
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}
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return ustring::npos;
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}
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// Helper to implement ustring::find_last_of() and find_last_not_of().
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// Returns the UTF-8 character offset, or ustring::npos if not found.
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//
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ustring::size_type utf8_find_last_of(const std::string& str, ustring::size_type offset,
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const char* utf8_match, long utf8_match_size,
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bool find_not_of)
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{
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long ucs4_match_size = 0;
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const Glib::ScopedPtr<gunichar> ucs4_match
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(g_utf8_to_ucs4_fast(utf8_match, utf8_match_size, &ucs4_match_size));
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const gunichar *const match_begin = ucs4_match.get();
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const gunichar *const match_end = match_begin + ucs4_match_size;
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const char *const str_begin = str.data();
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const char* pstr = str_begin;
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// Set pstr one byte beyond the actual start position.
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const ustring::size_type byte_offset = utf8_byte_offset(str, offset);
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pstr += (byte_offset < str.size()) ? byte_offset + 1 : str.size();
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while(pstr > str_begin)
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{
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// Move to previous character.
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do --pstr; while((*pstr & '\xC0') == '\x80');
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const gunichar *const pfound = std::find(match_begin, match_end, g_utf8_get_char(pstr));
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if((pfound != match_end) != find_not_of)
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return g_utf8_pointer_to_offset(str_begin, pstr);
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}
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return ustring::npos;
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}
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} // anonymous namespace
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namespace Glib
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{
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#ifndef GLIBMM_HAVE_ALLOWS_STATIC_INLINE_NPOS
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// Initialize static member here,
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// because the compiler did not allow us do it inline.
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const ustring::size_type ustring::npos = std::string::npos;
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#endif
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// We need our own version of g_utf8_get_char(), because the std::string
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// iterator is not necessarily a plain pointer (it's in fact not in GCC's
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// libstdc++-v3). Copying the UTF-8 data into a temporary buffer isn't an
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// option since this operation is quite time critical. The implementation
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// is quite different from g_utf8_get_char() -- both more generic and faster.
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//
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// By looking at the first byte of a UTF-8 character one can determine the
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// number of bytes used. GLib offers the g_utf8_skip[] array for this purpose,
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// but accessing this global variable would introduce a function call to fetch
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// the Global Offset Table, plus two levels of indirection in order to read the
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// value. Even worse, fetching the GOT is always done right at the start of
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// the function instead of the branch that actually uses the variable.
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//
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// Fortunately, there's a better way to get the byte count. As this table
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// shows, there's a nice regular pattern in the UTF-8 encoding scheme:
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//
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// 0x00000000 - 0x0000007F: 0xxxxxxx
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// 0x00000080 - 0x000007FF: 110xxxxx 10xxxxxx
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// 0x00000800 - 0x0000FFFF: 1110xxxx 10xxxxxx 10xxxxxx
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// 0x00010000 - 0x001FFFFF: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
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// 0x00200000 - 0x03FFFFFF: 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
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// 0x04000000 - 0x7FFFFFFF: 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
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//
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// Except for the single byte case, the number of leading 1-bits equals the
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// byte count. All that is needed is to shift the first byte to the left
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// until bit 7 becomes 0. Naturally, doing so requires a loop -- but since
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// we already have one, no additional cost is introduced. This shifting can
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// further be combined with the computation of the bitmask needed to eliminate
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// the leading length bits, thus saving yet another register.
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//
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gunichar get_unichar_from_std_iterator(std::string::const_iterator pos)
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{
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unsigned int result = static_cast<unsigned char>(*pos);
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if((result & 0x80) != 0)
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{
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unsigned int mask = 0x40;
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// This loop may look somewhat strange, but this happens to be the
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// one variant g++ 3.3 generates optimum code for. (In particular,
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// the unconditional break avoids counterproductive loop alignment.)
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for(++pos;; ++pos)
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{
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mask <<= 5;
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const unsigned int c = static_cast<unsigned char>(*pos);
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result = (result << 6) + c - 0x80;
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if((result & mask) != 0)
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continue;
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break;
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}
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result &= --mask;
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}
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return result;
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}
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/**** Glib::ustring ********************************************************/
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ustring::ustring()
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:
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string_ ()
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{}
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ustring::ustring(const ustring& other)
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:
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string_ (other.string_)
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{}
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ustring::ustring(const ustring& src, ustring::size_type i, ustring::size_type n)
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:
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string_ ()
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{
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const Utf8SubstrBounds bounds (src.string_, i, n);
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string_.assign(src.string_, bounds.i, bounds.n);
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}
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ustring::ustring(const char* src, ustring::size_type n)
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:
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string_ (src, utf8_byte_offset(src, n))
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{}
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ustring::ustring(const char* src)
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:
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string_ (src)
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{}
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ustring::ustring(ustring::size_type n, gunichar uc)
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:
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string_ ()
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{
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if(uc < 0x80)
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{
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// Optimize the probably most common case.
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string_.assign(n, static_cast<char>(uc));
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}
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else
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{
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const UnicharToUtf8 conv (uc);
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string_.reserve(n * conv.len);
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for(; n > 0; --n)
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string_.append(conv.buf, conv.len);
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}
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}
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ustring::ustring(ustring::size_type n, char c)
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:
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string_ (n, c)
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{}
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ustring::ustring(const std::string& src)
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:
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string_ (src)
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{}
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ustring::~ustring()
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{}
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void ustring::swap(ustring& other)
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{
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string_.swap(other.string_);
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}
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/**** Glib::ustring::operator=() *******************************************/
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ustring& ustring::operator=(const ustring& other)
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{
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string_ = other.string_;
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return *this;
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}
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ustring& ustring::operator=(const std::string& src)
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{
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string_ = src;
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return *this;
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}
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ustring& ustring::operator=(const char* src)
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{
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string_ = src;
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return *this;
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}
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ustring& ustring::operator=(gunichar uc)
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{
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const UnicharToUtf8 conv (uc);
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string_.assign(conv.buf, conv.len);
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return *this;
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}
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ustring& ustring::operator=(char c)
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{
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string_ = c;
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return *this;
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}
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/**** Glib::ustring::assign() **********************************************/
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ustring& ustring::assign(const ustring& src)
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{
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string_ = src.string_;
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return *this;
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}
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ustring& ustring::assign(const ustring& src, ustring::size_type i, ustring::size_type n)
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{
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const Utf8SubstrBounds bounds (src.string_, i, n);
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string_.assign(src.string_, bounds.i, bounds.n);
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return *this;
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}
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ustring& ustring::assign(const char* src, ustring::size_type n)
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{
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string_.assign(src, utf8_byte_offset(src, n));
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return *this;
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}
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ustring& ustring::assign(const char* src)
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{
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string_ = src;
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return *this;
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}
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ustring& ustring::assign(ustring::size_type n, gunichar uc)
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{
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ustring temp (n, uc);
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string_.swap(temp.string_);
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return *this;
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}
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ustring& ustring::assign(ustring::size_type n, char c)
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{
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string_.assign(n, c);
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return *this;
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}
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/**** Glib::ustring::operator+=() ******************************************/
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ustring& ustring::operator+=(const ustring& src)
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{
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string_ += src.string_;
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return *this;
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}
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ustring& ustring::operator+=(const char* src)
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{
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string_ += src;
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return *this;
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}
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ustring& ustring::operator+=(gunichar uc)
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{
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const UnicharToUtf8 conv (uc);
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string_.append(conv.buf, conv.len);
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return *this;
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}
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ustring& ustring::operator+=(char c)
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{
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string_ += c;
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return *this;
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}
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/**** Glib::ustring::push_back() *******************************************/
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void ustring::push_back(gunichar uc)
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{
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const UnicharToUtf8 conv (uc);
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string_.append(conv.buf, conv.len);
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}
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void ustring::push_back(char c)
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{
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string_ += c;
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}
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/**** Glib::ustring::append() **********************************************/
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ustring& ustring::append(const ustring& src)
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{
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string_ += src.string_;
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return *this;
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}
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ustring& ustring::append(const ustring& src, ustring::size_type i, ustring::size_type n)
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{
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const Utf8SubstrBounds bounds (src.string_, i, n);
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string_.append(src.string_, bounds.i, bounds.n);
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return *this;
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}
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ustring& ustring::append(const char* src, ustring::size_type n)
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{
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string_.append(src, utf8_byte_offset(src, n));
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return *this;
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}
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ustring& ustring::append(const char* src)
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{
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string_ += src;
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return *this;
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}
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ustring& ustring::append(ustring::size_type n, gunichar uc)
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{
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string_.append(ustring(n, uc).string_);
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return *this;
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}
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ustring& ustring::append(ustring::size_type n, char c)
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{
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string_.append(n, c);
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return *this;
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}
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/**** Glib::ustring::insert() **********************************************/
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ustring& ustring::insert(ustring::size_type i, const ustring& src)
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{
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string_.insert(utf8_byte_offset(string_, i), src.string_);
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return *this;
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}
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ustring& ustring::insert(ustring::size_type i, const ustring& src,
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ustring::size_type i2, ustring::size_type n)
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{
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const Utf8SubstrBounds bounds2 (src.string_, i2, n);
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string_.insert(utf8_byte_offset(string_, i), src.string_, bounds2.i, bounds2.n);
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return *this;
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}
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ustring& ustring::insert(ustring::size_type i, const char* src, ustring::size_type n)
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{
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string_.insert(utf8_byte_offset(string_, i), src, utf8_byte_offset(src, n));
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return *this;
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}
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ustring& ustring::insert(ustring::size_type i, const char* src)
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{
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string_.insert(utf8_byte_offset(string_, i), src);
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return *this;
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}
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ustring& ustring::insert(ustring::size_type i, ustring::size_type n, gunichar uc)
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{
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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((*p & '\x80') != 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;
|
|
utf8_string = Glib::locale_to_utf8(locale_string);
|
|
return is;
|
|
}
|
|
|
|
std::ostream& operator<<(std::ostream& os, const Glib::ustring& utf8_string)
|
|
{
|
|
os << Glib::locale_from_utf8(utf8_string);
|
|
return os;
|
|
}
|
|
|
|
} // namespace Glib
|
|
|