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/***********************************************************************
* fvtermbuffer.cpp - Buffer for virtual terminal strings *
* *
* This file is part of the FINAL CUT widget toolkit *
* *
* Copyright 2017-2023 Markus Gans *
* *
* FINAL CUT is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 3 of *
* the License, or (at your option) any later version. *
* *
* FINAL CUT 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 Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
***********************************************************************/
#include <algorithm>
#include <string>
#include <vector>
#include "final/fc.h"
#include "final/ftypes.h"
#include "final/output/foutput.h"
#include "final/output/tty/ftermdata.h"
#include "final/util/fstring.h"
#include "final/vterm/fcolorpair.h"
#include "final/vterm/fstyle.h"
#include "final/vterm/fvtermbuffer.h"
#include "final/vterm/fvterm.h"
namespace finalcut
{
//----------------------------------------------------------------------
// class FVTermBuffer
//----------------------------------------------------------------------
// constructors and destructor
//----------------------------------------------------------------------
FVTermBuffer::FVTermBuffer() // constructor
{
data.reserve(2048); // Set initial data size to 2048 FChars
}
// public methods of FVTermBuffer
//----------------------------------------------------------------------
auto FVTermBuffer::toString() const -> FString
{
std::wstring wide_string{};
checkCapacity(wide_string, data.size());
std::for_each ( data.cbegin()
, data.cend()
, [&wide_string] (const auto& fchar)
{
for (auto&& ch : fchar.ch)
{
if ( ch == L'\0' )
return;
wide_string.push_back(ch);
}
}
);
return FString(std::move(wide_string));
}
//----------------------------------------------------------------------
auto FVTermBuffer::print (const FString& string) -> int
{
checkCapacity(data, data.size() + string.getLength());
getNextCharacterAttribute();
const auto last = string.cend();
auto cbegin = string.cbegin();
auto iter = cbegin;
int char_width{0};
for (auto&& ch : string)
{
auto width = getColumnWidth(ch);
auto ctrl_char = std::iswcntrl(wint_t(ch));
if ( width == 0 && ! ctrl_char ) // zero-width character
{
if ( iter == cbegin )
++cbegin;
++iter;
}
else if ( iter != cbegin )
add(cbegin, iter, char_width);
if ( iter == cbegin && (width > 0 || is7bit(ch)) ) // 1st char
++iter;
if ( width > 0 )
char_width += width;
if ( ctrl_char )
add(cbegin, iter, char_width);
}
if ( iter == last )
add(cbegin, iter, char_width);
return int(string.getLength());
}
//----------------------------------------------------------------------
auto FVTermBuffer::print (wchar_t ch) -> int
{
getNextCharacterAttribute();
nc.ch[0] = ch;
nc.ch[1] = L'\0';
const auto column_width = getColumnWidth(nc.ch[0]);
addColumnWidth(nc, column_width); // add column width
data.emplace_back(nc);
return 1;
}
//----------------------------------------------------------------------
void FVTermBuffer::print (const FStyle& style) const
{
FVTermAttribute::print(style);
}
//----------------------------------------------------------------------
void FVTermBuffer::print (const FColorPair& pair) const
{
FVTermAttribute::setColor( pair.getForegroundColor()
, pair.getBackgroundColor() );
}
// private methods of FVTermBuffer
//----------------------------------------------------------------------
inline void FVTermBuffer::getNextCharacterAttribute()
{
static const auto& next_attribute = FVTermAttribute::getAttribute();
nc.fg_color = next_attribute.fg_color;
nc.bg_color = next_attribute.bg_color;
nc.attr.byte[0] = next_attribute.attr.byte[0];
nc.attr.byte[1] = next_attribute.attr.byte[1];
nc.attr.byte[2] = 0;
nc.attr.byte[3] = 0;
}
//----------------------------------------------------------------------
void FVTermBuffer::add ( FString::const_iterator& cbegin
, const FString::const_iterator& cend
, int& char_width )
{
static const auto& fterm_data = FTermData::getInstance();
if ( cbegin == cend )
return;
if ( char_width == 2
&& fterm_data.getTerminalEncoding() != Encoding::UTF8 )
{
nc.ch[0] = L'.';
nc.ch[1] = L'\0';
nc.attr.bit.char_width = 1;
}
else
{
const auto end = std::min(cend, cbegin + UNICODE_MAX);
std::copy(cbegin, end, nc.ch.begin());
nc.attr.bit.char_width = uInt8(char_width) & 0x03;
const auto idx = std::size_t(end - cbegin);
if ( idx < UNICODE_MAX )
nc.ch[idx] = L'\0';
}
data.emplace_back(nc);
cbegin = cend;
char_width = 0; // reset char width
}
// FVTermBuffer non-member operators
//----------------------------------------------------------------------
auto operator << ( FVTermBuffer::FCharVector& term_string
, const FVTermBuffer& buf ) -> FVTermBuffer::FCharVector&
{
if ( ! buf.data.empty() )
term_string.assign(buf.data.cbegin(), buf.data.cend());
return term_string;
}
} // namespace finalcut
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