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viewer.cpp
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viewer.cpp
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/*
viewer.cpp
Internal viewer
*/
/*
Copyright © 1996 Eugene Roshal
Copyright © 2000 Far Group
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the authors may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "headers.hpp"
#pragma hdrstop
#include "viewer.hpp"
#include "codepage.hpp"
#include "macroopcode.hpp"
#include "keyboard.hpp"
#include "flink.hpp"
#include "colors.hpp"
#include "keys.hpp"
#include "help.hpp"
#include "dialog.hpp"
#include "filepanels.hpp"
#include "fileview.hpp"
#include "ctrlobj.hpp"
#include "scrbuf.hpp"
#include "TPreRedrawFunc.hpp"
#include "syslog.hpp"
#include "TaskBar.hpp"
#include "cddrv.hpp"
#include "drivemix.hpp"
#include "interf.hpp"
#include "message.hpp"
#include "clipboard.hpp"
#include "delete.hpp"
#include "pathmix.hpp"
#include "filestr.hpp"
#include "mix.hpp"
#include "constitle.hpp"
#include "console.hpp"
#include "RegExp.hpp"
#include "colormix.hpp"
#include "vmenu2.hpp"
#include "plugins.hpp"
#include "manager.hpp"
#include "language.hpp"
#include "datetime.hpp"
#include "keybar.hpp"
#include "stddlg.hpp"
#include "strmix.hpp"
enum SHOW_MODES
{
SHOW_RELOAD,
SHOW_HEX,
SHOW_UP,
SHOW_DOWN,
SHOW_DUMP
};
static void PR_ViewerSearchMsg();
static void ViewerSearchMsg(const string& name, int percent, int search_hex);
static int ViewerID=0;
static bool IsCodePageSupported(uintptr_t cp)
{
return Codepages().IsCodePageSupported(cp, 2);
}
// seems like this initialization list is toooooo long
Viewer::Viewer(window_ptr Owner, bool bQuickView, uintptr_t aCodePage):
SimpleScreenObject(Owner),
ViOpt(Global->Opt->ViOpt),
Signature(),
m_ViewKeyBar(),
Reader(ViewFile, (Global->Opt->ViOpt.MaxLineSize*2*64 > 64*1024 ? Global->Opt->ViOpt.MaxLineSize*2*64 : 64*1024)),
m_DeleteFolder(true),
strLastSearchStr(Global->GetSearchString()),
LastSearchCase(Global->GlobalSearchCase),
LastSearchWholeWords(Global->GlobalSearchWholeWords),
LastSearchReverse(Global->GlobalSearchReverse),
LastSearchHex(Global->GetSearchHex()),
LastSearchRegexp(Global->Opt->ViOpt.SearchRegexp),
LastSearchDirection(Global->GlobalSearchReverse? -1 : +1),
StartSearchPos(),
m_DefCodepage(aCodePage),
m_Codepage(m_DefCodepage),
m_Wrap(Global->Opt->ViOpt.ViewerIsWrap),
m_WordWrap(Global->Opt->ViOpt.ViewerWrap),
m_DisplayMode(VMT_TEXT),
m_DumpTextMode(),
FilePos(),
SecondPos(),
FileSize(),
LastSelectPos(),
LastSelectSize(-1),
LeftPos(),
LastPage(),
SelectPos(),
SelectSize(-1),
ManualSelectPos(-1),
SelectFlags(),
ShowStatusLine(true),
m_HideCursor(true),
ReadStdin(),
InternalKey(),
LastKeyUndo(),
Width(),
XX2(),
ViewerID(::ViewerID++),
OpenFailed(),
bVE_READ_Sent(),
HostFileViewer(),
AdjustSelPosition(),
redraw_selection(),
m_bQuickView(bQuickView),
m_IdleCheck(std::make_unique<time_check>(time_check::delayed, 500)),
vread_buffer(std::max(MaxViewLineBufferSize(), size_t(8192))),
lcache_first(-1),
lcache_last(-1),
lcache_lines(16*1000),
lcache_count(),
lcache_base(),
lcache_ready(),
lcache_wrap(-1),
lcache_wwrap(-1),
lcache_width(-1),
// dirty magic numbers, fix them!
max_backward_size(std::min(Options::ViewerOptions::eMaxLineSize*3ll, std::max(Global->Opt->ViOpt.MaxLineSize*2, 1024ll) * 32)),
llengths(max_backward_size / 40),
Search_buffer(3 * std::max(MaxViewLineBufferSize(), size_t(8192))),
vString(),
vgetc_buffer(),
vgetc_ready(),
vgetc_cb(),
vgetc_ib(),
vgetc_composite(L'\0'),
ReadBuffer(MaxViewLineBufferSize()),
f8cps(true)
{
if (m_DefCodepage != CP_DEFAULT)
MB.SetCP(m_DefCodepage);
}
Viewer::~Viewer()
{
KeepInitParameters();
if (ViewFile)
{
ViewFile.Close();
SavePosition();
}
_tran(SysLog(L"[%p] Viewer::~Viewer, TempViewName=[%s]",this,TempViewName));
/* $ 11.10.2001 IS
Óäàëÿåì ôàéë òîëüêî, åñëè íåò îòêðûòûõ îêîí ñ òàêèì èìåíåì.
*/
if (!strTempViewName.empty() && !Global->WindowManager->CountWindowsWithName(strTempViewName))
{
/* $ 14.06.2002 IS
Åñëè DeleteFolder ñáðîøåí, òî óäàëÿåì òîëüêî ôàéë. Èíà÷å - óäàëÿåì åùå
è êàòàëîã.
*/
if (m_DeleteFolder)
DeleteFileWithFolder(strTempViewName);
else
{
os::SetFileAttributes(strTempViewName,FILE_ATTRIBUTE_NORMAL);
os::DeleteFile(strTempViewName); //BUGBUG
}
}
}
wchar_t Viewer::ZeroChar() const
{
return ViOpt.Visible0x00 && ViOpt.ZeroChar > 0 ? static_cast<wchar_t>(ViOpt.ZeroChar) : L' ';
}
struct Viewer::ViewerUndoData
{
ViewerUndoData(__int64 UndoAddr, __int64 UndoLeft):
UndoAddr(UndoAddr),
UndoLeft(UndoLeft)
{
}
__int64 UndoAddr;
__int64 UndoLeft;
};
void Viewer::SavePosition()
{
if (Global->Opt->ViOpt.SaveShortPos || Global->Opt->ViOpt.SavePos || Global->Opt->ViOpt.SaveCodepage || Global->Opt->ViOpt.SaveWrapMode)
{
ViewerPosCache poscache;
poscache.cur.FilePos = FilePos;
poscache.cur.LeftPos = LeftPos;
// BUGBUG, witchcraft!
poscache.Hex_Wrap = (m_DisplayMode & 0x03) | 0x10 | (m_Wrap? 0x20 : 0x00) | (m_WordWrap? 0x40 : 0x00);
poscache.CodePage = m_Codepage;
poscache.bm = BMSavePos;
string strCacheName = strPluginData.empty() ? strFullFileName : strPluginData+PointToName(strFileName);
FilePositionCache::AddPosition(strCacheName, poscache);
}
}
void Viewer::KeepInitParameters() const
{
Global->StoreSearchString(strLastSearchStr, LastSearchHex);
Global->GlobalSearchCase=LastSearchCase;
Global->GlobalSearchWholeWords=LastSearchWholeWords;
Global->GlobalSearchReverse=LastSearchReverse;
Global->Opt->ViOpt.ViewerIsWrap=m_Wrap != 0;
Global->Opt->ViOpt.ViewerWrap=m_WordWrap != 0;
Global->Opt->ViOpt.SearchRegexp=LastSearchRegexp;
}
int Viewer::OpenFile(const string& Name,int warning)
{
m_Codepage=m_DefCodepage;
m_DefCodepage=CP_DEFAULT;
OpenFailed=false;
ViewFile.Close();
Reader.Clear();
vgetc_ready = lcache_ready = false;
SelectSize = -1; // Ñáðîñèì âûäåëåíèå
strFileName = Name;
if (Global->OnlyEditorViewerUsed && strFileName == L"-")
{
string strTempName;
if (!FarMkTempEx(strTempName))
{
OpenFailed = true;
return FALSE;
}
if (!ViewFile.Open(strTempName,GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,nullptr,CREATE_ALWAYS,FILE_ATTRIBUTE_TEMPORARY|FILE_FLAG_DELETE_ON_CLOSE))
{
OpenFailed = true;
return FALSE;
}
DWORD ReadSize = 0;
size_t WrittenSize;
while (ReadFile(Console().GetOriginalInputHandle(),vread_buffer.data(),(DWORD)vread_buffer.size(),&ReadSize,nullptr) && ReadSize)
{
ViewFile.Write(vread_buffer.data(),ReadSize,WrittenSize);
}
ViewFile.SetPointer(0, nullptr, FILE_BEGIN);
//after reading from the pipe, redirect stdin to the real console stdin
//CONIN$ must be opened with the exact flags and name as below so api::CreateFile() is not good
SetStdHandle(STD_INPUT_HANDLE,CreateFile(L"CONIN$",GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ,nullptr,OPEN_EXISTING,0,nullptr));
ReadStdin=TRUE;
}
else
{
ViewFile.Open(strFileName, FILE_READ_DATA, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, nullptr, OPEN_EXISTING);
}
if (!ViewFile)
{
Global->CatchError();
/* $ 04.07.2000 tran
+ 'warning' flag processing, in QuickView it is FALSE
so don't show red message box */
if (warning)
Message(MSG_WARNING|MSG_ERRORTYPE,1,MSG(MViewerTitle),
MSG(MViewerCannotOpenFile),strFileName.data(),MSG(MOk));
OpenFailed=true;
return FALSE;
}
Reader.AdjustAlignment();
ConvertNameToFull(strFileName,strFullFileName);
os::GetFindDataEx(strFileName, ViewFindData);
uintptr_t CachedCodePage=0;
if ((Global->Opt->ViOpt.SavePos || Global->Opt->ViOpt.SaveShortPos || Global->Opt->ViOpt.SaveCodepage || Global->Opt->ViOpt.SaveWrapMode) && !ReadStdin)
{
string strCacheName=strPluginData.empty()?strFileName:strPluginData+PointToName(strFileName);
ViewerPosCache poscache;
bool found = FilePositionCache::GetPosition(strCacheName,poscache);
if (Global->Opt->ViOpt.SavePos || Global->Opt->ViOpt.SaveShortPos)
{
__int64 NewFilePos=std::max(poscache.cur.FilePos, 0LL);
__int64 NewLeftPos=poscache.cur.LeftPos;
if (found && !m_DisplayMode.touched()) // keep Mode if file listed (Gray+-)
{
m_DisplayMode = static_cast<VIEWER_MODE_TYPE>(poscache.Hex_Wrap & 0x03);
if (m_DisplayMode != VMT_HEX)
m_DumpTextMode = m_DisplayMode == VMT_DUMP;
}
BMSavePos=poscache.bm;
LastSelectPos=FilePos=NewFilePos;
LeftPos=NewLeftPos;
}
if (Global->Opt->ViOpt.SaveCodepage || Global->Opt->ViOpt.SavePos)
{
CachedCodePage=poscache.CodePage;
if (CachedCodePage && !IsCodePageSupported(CachedCodePage))
CachedCodePage = 0;
}
if (Global->Opt->ViOpt.SaveWrapMode && 0 != (poscache.Hex_Wrap & 0x10))
{
m_Wrap = (poscache.Hex_Wrap & 0x20 ? 1 : 0);
m_WordWrap = (poscache.Hex_Wrap & 0x40 ? 1 : 0);
}
}
else
{
FilePos=0;
}
// Unicode auto-detect ignores ViOpt.AutoDetectTable
{
bool Detect=false;
uintptr_t CodePage=0;
if (m_Codepage == CP_DEFAULT || IsUnicodeOrUtfCodePage(m_Codepage))
{
Detect = GetFileFormat(ViewFile, CodePage, &Signature, Global->Opt->ViOpt.AutoDetectCodePage!=0)
&& IsCodePageSupported(CodePage);
}
if (m_Codepage == CP_DEFAULT)
{
if (Detect)
m_Codepage = CodePage;
if (CachedCodePage)
m_Codepage = CachedCodePage;
if (m_Codepage == CP_DEFAULT)
m_Codepage = GetDefaultCodePage();
MB.SetCP(m_Codepage);
}
ViewFile.SetPointer(0, nullptr, FILE_BEGIN);
}
SetFileSize();
if (!m_DumpTextMode.touched())
m_DumpTextMode = isBinaryFile(m_Codepage);
if (!m_DisplayMode.touched())
m_DisplayMode = m_DumpTextMode? VMT_DUMP : VMT_TEXT;
if (FilePos > FileSize)
FilePos=0;
if ( FilePos )
AdjustFilePos();
ChangeViewKeyBar();
AdjustWidth();
string strRoot;
GetPathRoot(strFullFileName, strRoot);
int DriveType = FAR_GetDriveType(strRoot, 2); // media inserted here
int update_check_period = -1;
switch (DriveType) //??? make it configurable
{
case DRIVE_REMOVABLE: update_check_period = -1; break; // floppy: never
case DRIVE_USBDRIVE: update_check_period = 500; break; // flash drive: 0.5 sec
case DRIVE_FIXED: update_check_period = +1; break; // hard disk: 1 msec
case DRIVE_REMOTE: update_check_period = 500; break; // network drive: 0.5 sec
case DRIVE_CDROM: update_check_period = -1; break; // cd/dvd: never
case DRIVE_RAMDISK: update_check_period = +1; break; // ram-drive: 1 msec
default: update_check_period = -1; break; // unknown: never
}
m_TimeCheck = std::make_unique<time_check>(time_check::delayed, update_check_period);
if (!HostFileViewer) ReadEvent();
return TRUE;
}
bool Viewer::isBinaryFile(uintptr_t cp) // very approximate: looks for '\0' in first 2k bytes
{
char Buffer[2048];
const auto CurrentPos = vtell();
vseek(0, FILE_BEGIN);
size_t BytesRead = 0;
bool Result = ViewFile.Read(Buffer, sizeof(Buffer), BytesRead, nullptr);
vseek(CurrentPos, FILE_BEGIN);
if (!Result)
return true;
if (IsUnicodeCodePage(cp))
{
const auto Begin = reinterpret_cast<const wchar_t*>(Buffer);
const auto End = Begin + BytesRead/sizeof(wchar_t);
return std::find(Begin, End, L'\0') != End;
}
else
{
return std::find(Buffer, Buffer + BytesRead, '\0') != Buffer + BytesRead;
}
}
void Viewer::AdjustWidth()
{
Width=m_X2-m_X1+1;
XX2=m_X2;
if (ViOpt.ShowScrollbar && !m_bQuickView)
{
Width--;
XX2--;
}
}
bool Viewer::CheckChanged()
{
os::FAR_FIND_DATA NewViewFindData;
if (!os::GetFindDataEx(strFullFileName, NewViewFindData))
return TRUE;
// Smart file change check -- thanks Dzirt2005
//
bool changed = ViewFindData.ftLastWriteTime != NewViewFindData.ftLastWriteTime || ViewFindData.nFileSize != NewViewFindData.nFileSize;
if ( changed )
ViewFindData = NewViewFindData;
else {
if ( !ViewFile.GetSize(NewViewFindData.nFileSize) || FileSize == static_cast<__int64>(NewViewFindData.nFileSize) )
return TRUE;
changed = FileSize > static_cast<__int64>(NewViewFindData.nFileSize); // true if file shrank
}
SetFileSize();
if ( changed ) // do not reset caches if file just enlarged [make sense on Win7, doesn't matter on XP]
{
Reader.Clear(); // èíà÷å çà÷åì âñÿ ýòà âîçíÿ?
ViewFile.FlushBuffers();
vseek(0, FILE_CURRENT); // reset vgetc state
lcache_ready = false; // reset start-lines cache
}
return changed;
}
void Viewer::ShowPage(int nMode)
{
redraw_selection = false;
AdjustWidth();
if (!ViewFile)
{
if (!strFileName.empty() && ((nMode == SHOW_RELOAD) || (nMode == SHOW_HEX)|| (nMode == SHOW_DUMP)))
{
SetScreen(m_X1,m_Y1,m_X2,m_Y2,L' ',colors::PaletteColorToFarColor(COL_VIEWERTEXT));
GotoXY(m_X1,m_Y1);
SetColor(COL_WARNDIALOGTEXT);
Global->FS << fmt::MaxWidth(XX2-m_X1+1)<<MSG(MViewerCannotOpenFile);
ShowStatus();
}
return;
}
if (m_HideCursor)
SetCursorType(0,10);
vseek(FilePos, FILE_BEGIN);
LastPage = false;
if ( SelectSize < 0 )
SelectPos=FilePos;
switch (nMode)
{
case SHOW_HEX:
ShowHex();
break;
case SHOW_DUMP:
ShowDump();
break;
case SHOW_RELOAD:
{
m_TimeCheck->reset();
CheckChanged();
Strings.clear();
for (int Y = m_Y1; Y<=m_Y2; ++Y)
{
Strings.emplace_back(VALUE_TYPE(Strings)());
Strings.back().nFilePos = vtell();
if (Y==m_Y1+1 && !veof())
SecondPos=vtell();
ReadString(&Strings.back(), -1);
}
}
break;
case SHOW_UP:
if (m_Y2 > m_Y1)
{
SecondPos = Strings.front().nFilePos;
Strings.pop_back();
Strings.emplace_front(ViewerString());
Strings.front().nFilePos = FilePos;
}
else
{
SecondPos = Strings.front().nFilePos;
Strings.front().nFilePos = FilePos;
}
ReadString(&Strings.front(),(int)(SecondPos-FilePos));
break;
case SHOW_DOWN:
if (m_Y2 > m_Y1)
{
Strings.pop_front();
Strings.emplace_back(VALUE_TYPE(Strings)());
FilePos = Strings.front().nFilePos;
const auto Second = std::next(Strings.begin());
SecondPos = Second->nFilePos;
const auto PreLast = std::prev(Strings.end(), 2);
Strings.back().nFilePos = PreLast->nFilePos + PreLast->linesize;
}
else
{
Strings.front().nFilePos += Strings.front().linesize;
FilePos = Strings.front().nFilePos;
SecondPos = FilePos;
}
vseek(Strings.back().nFilePos, FILE_BEGIN);
ReadString(&Strings.back(), -1);
break;
}
if (nMode != SHOW_HEX && nMode != SHOW_DUMP)
{
int Y = m_Y1 - 1;
FOR (auto& i, Strings)
{
++Y;
SetColor(COL_VIEWERTEXT);
GotoXY(m_X1,Y);
if (static_cast<long long>(i.Data.size()) > LeftPos)
{
Global->FS << fmt::LeftAlign()<<fmt::ExactWidth(Width)<< i.Data.data() + LeftPos;
}
else
{
Global->FS << fmt::MinWidth(Width)<<L"";
}
if (SelectSize >= 0 && i.bSelection)
{
__int64 SelX1;
if (LeftPos > i.nSelStart)
SelX1 = m_X1;
else
SelX1 = i.nSelStart - LeftPos;
if (!m_Wrap && (i.nSelEnd < LeftPos || i.nSelStart > LeftPos + XX2 - m_X1))
{
if (AdjustSelPosition)
{
LeftPos = i.nSelStart - 1;
AdjustSelPosition = false;
Show();
return;
}
}
else
{
SetColor(COL_VIEWERSELECTEDTEXT);
GotoXY(static_cast<int>(m_X1+SelX1),Y);
__int64 Length = i.nSelEnd - i.nSelStart;
if (LeftPos > i.nSelStart)
Length = i.nSelEnd - LeftPos;
if (LeftPos > i.nSelEnd)
Length = 0;
Global->FS << fmt::MaxWidth(static_cast<size_t>(Length)) << i.Data.data() + SelX1 + LeftPos;
}
}
if (static_cast<long long>(i.Data.size()) > LeftPos + Width && ViOpt.ShowArrows)
{
GotoXY(XX2,Y);
SetColor(COL_VIEWERARROWS);
BoxText(0xbb);
}
if (LeftPos>0 && !i.Data.empty() && ViOpt.ShowArrows)
{
GotoXY(m_X1,Y);
SetColor(COL_VIEWERARROWS);
BoxText(0xab);
}
}
}
DrawScrollbar();
ShowStatus();
}
void Viewer::DisplayObject()
{
SHOW_MODES ShowMode;
switch (m_DisplayMode)
{
default:
case VMT_TEXT:
ShowMode = SHOW_RELOAD;
break;
case VMT_HEX:
ShowMode = SHOW_HEX;
break;
case VMT_DUMP:
ShowMode = SHOW_DUMP;
break;
}
ShowPage(ShowMode);
}
int Viewer::getCharSize() const
{
if (CP_UTF8 == m_Codepage)
return -1;
else if (CP_UNICODE == m_Codepage || CP_REVERSEBOM == m_Codepage)
return +2;
else
return m_Codepage == MB.GetCP()? -static_cast<int>(MB.GetSize()) : +1;
}
static inline int getChSize( UINT cp )
{
if ( CP_UNICODE == cp || CP_REVERSEBOM == cp )
return +2;
else
return +1;
}
int Viewer::GetModeDependentCharSize() const
{
return m_DisplayMode == VMT_HEX? 1 : getChSize(m_Codepage);
}
int Viewer::GetModeDependentLineSize() const
{
return m_DisplayMode == VMT_HEX? 16 : Width * getChSize(m_Codepage);
}
int Viewer::txt_dump(const char *Src, size_t Size, size_t ClientWidth, string& OutStr, wchar_t ZeroChar, int tail) const
{
OutStr.clear();
if (m_Codepage == CP_UNICODE || m_Codepage == CP_REVERSEBOM)
{
OutStr.assign(reinterpret_cast<const wchar_t*>(Src), Size / sizeof(wchar_t));
if (m_Codepage == CP_REVERSEBOM)
{
swap_bytes(&OutStr[0], &OutStr[0], OutStr.size() * sizeof(wchar_t));
}
if (Size & 1)
{
OutStr.push_back(Utf::REPLACE_CHAR);
}
}
else if (m_Codepage == CP_UTF8)
{
std::vector<wchar_t> w1(ClientWidth);
std::vector<wchar_t> w2(ClientWidth);
int dummy_tail;
int nw = Utf8::ToWideChar(Src, Size, w1.data(), w2.data(), ClientWidth, dummy_tail);
bool first = true;
for (int iw = 0; OutStr.size() < ClientWidth && iw < nw; ++iw)
{
if (tail)
{
--tail;
OutStr.push_back(Utf::CONTINUE_CHAR);
continue;
}
if (first && w1[iw] == Utf::REPLACE_CHAR && w2[iw] == L'?')
{
OutStr.push_back(Utf::CONTINUE_CHAR); // ýòî ìîæåò áûòü íå ñîâñåì êîððåêòíî äëÿ 'ïëîõèõ' utf-8
} // íî óñëîæíÿòü èç-çà ýòîãî êîä íà ìîé âçãëÿä íå ñòîèò...
else
{
first = false;
OutStr.push_back(w1[iw] == Utf::BOM_CHAR? Utf::REPLACE_CHAR : w1[iw]); // BOM can be Zero Length
}
const auto clen = unicode::to(CP_UTF8, w2.data() + iw, 1, nullptr, 0);
const auto PaddingSize = std::min(clen - 1, static_cast<size_t>(ClientWidth) - OutStr.size());
OutStr.append(PaddingSize, Utf::CONTINUE_CHAR);
tail = static_cast<int>(clen - 1 - PaddingSize); // char continues on the next line?
}
}
else if (m_Codepage == MB.GetCP())
{
while (OutStr.size() < ClientWidth && OutStr.size() < Size)
{
if (tail)
{
--tail;
OutStr.push_back(Utf::CONTINUE_CHAR);
continue;
}
wchar_t Char;
const auto clen = MB.GetChar(Src + OutStr.size(), Size - OutStr.size(), Char);
if (clen)
{
OutStr.push_back(Char);
}
else
{
OutStr.push_back(Utf::REPLACE_CHAR);
continue;
}
const auto PaddingSize = std::min(clen - 1, ClientWidth - OutStr.size());
OutStr.append(PaddingSize, Utf::CONTINUE_CHAR);
tail = static_cast<int>(clen - 1 - PaddingSize); // char continues on the next line?
}
}
else
{
OutStr = unicode::from(m_Codepage, Src, Size);
}
OutStr.resize(ClientWidth, L' ');
std::replace(ALL_RANGE(OutStr), L'\0', ZeroChar);
return tail;
}
void Viewer::ShowDump()
{
const int CharSize = getChSize(m_Codepage);
const int xl = m_Codepage == CP_UTF8? 4 - 1 : m_Codepage == MB.GetCP()? static_cast<int>(MB.GetSize() - 1) : 0;
const size_t BytesToRead = Width * CharSize + xl;
const DWORD mb = Width * CharSize;
FilePos -= FilePos % CharSize;
vseek(SecondPos = FilePos, FILE_BEGIN);
bool EndFile = false;
int tail = 0;
std::vector<char> line(Width * 2);
string OutStr;
for (auto Y = m_Y1; Y <= m_Y2; ++Y)
{
SetColor(COL_VIEWERTEXT);
GotoXY(m_X1, Y);
if (EndFile)
{
Global->FS << fmt::MinWidth(ObjWidth())<<L"";
continue;
}
const auto bpos = vtell();
if (Y == m_Y1+1)
SecondPos = bpos;
size_t BytesRead = 0;
Reader.Read(line.data(), BytesToRead, &BytesRead);
if (BytesRead > mb)
Reader.Unread(BytesRead-mb);
else
LastPage = EndFile = veof();
tail = txt_dump(line.data(), BytesRead, Width, OutStr, ZeroChar(), tail);
Global->FS << fmt::LeftAlign()<<fmt::MinWidth(ObjWidth()) << OutStr;
if ( SelectSize > 0 && bpos < SelectPos+SelectSize && bpos+mb > SelectPos )
{
const int bsel = SelectPos > bpos? (int)(SelectPos-bpos) / CharSize : 0;
const int esel = SelectPos + SelectSize < bpos + mb? ((int)(SelectPos + SelectSize - bpos) + CharSize - 1) / CharSize : Width;
SetColor(COL_VIEWERSELECTEDTEXT);
GotoXY(bsel, Y);
Global->FS << fmt::MaxWidth(esel - bsel) << OutStr.data() + bsel;
}
}
}
void Viewer::ShowHex()
{
const auto HexLeftPos = ((LeftPos > 80 - ObjWidth())? std::max(80 - ObjWidth(), 0) : LeftPos);
const wchar_t BorderLine[] = { BoxSymbols[BS_V1], L' ', 0 };
const auto BorderLen = wcslen(BorderLine);
int tail = 0;
bool EndFile = false;
LastPage = false;
for (auto Y = m_Y1; Y <= m_Y2; ++Y)
{
bool bSelStartFound = false;
bool bSelEndFound = false;
SetColor(COL_VIEWERTEXT);
GotoXY(m_X1,Y);
if (EndFile)
{
Global->FS << fmt::MinWidth(ObjWidth())<<L"";
continue;
}
if (Y==m_Y1+1 && !veof())
SecondPos=vtell();
auto OutStr = str_printf(L"%010I64X: ", vtell());
int SelStart = static_cast<int>(OutStr.size()), SelEnd = SelStart;
__int64 fpos = vtell();
if (fpos > SelectPos)
bSelStartFound = true;
if (fpos < SelectPos+SelectSize-1)
bSelEndFound = true;
if ( SelectSize < 0 )
bSelStartFound = bSelEndFound = false;
char RawBuffer[16+3];
size_t BytesRead = 0;
size_t BytesToRead = CP_UTF8 == m_Codepage ? 16 + 4 - 1 : (m_Codepage == MB.GetCP()? 16 + MB.GetSize() - 1 : 16);
Reader.Read(RawBuffer, BytesToRead, &BytesRead);
if (BytesRead > 16)
Reader.Unread(BytesRead-16);
else
LastPage = EndFile = veof();
string TextStr;
if (!BytesRead)
{
OutStr.clear();
}
else
{
if (IsUnicodeCodePage(m_Codepage))
{
const int be = m_Codepage == CP_REVERSEBOM ? 1 : 0;
for (size_t X = 0; X != 16; X += 2)
{
if (SelectSize >= 0 && (SelectPos == fpos || SelectPos == fpos+1))
{
const auto half = SelectPos != fpos;
bSelStartFound = true;
SelStart = static_cast<int>(OutStr.size()) + (half ? 1 + be : 0);
if (!SelectSize)
SelStart += (half ? be : 0) - 1;
}
if (SelectSize >= 0 && (fpos == SelectPos+SelectSize-1 || fpos+1 == SelectPos+SelectSize-1))
{
const auto half = fpos == SelectPos + SelectSize - 1;
bSelEndFound = true;
SelEnd = static_cast<int>(OutStr.size()) + 3 - (half ? 1 + be : 0);
if (!SelectSize)
SelEnd = SelStart;
}
else if ( SelectSize == 0 && (SelectPos == fpos || SelectPos == fpos+1) )
{
bSelEndFound = true;
SelEnd = SelStart;
}
if (X < BytesRead - 1) // full character
{
auto Char = *reinterpret_cast<wchar_t*>(RawBuffer + X);
if (be)
{
swap_bytes(&Char, &Char, sizeof(wchar_t));
}
OutStr += str_printf(L"%04X ", int(Char));
TextStr.push_back(Char? Char : ZeroChar());
}
else if (X == BytesRead - 1) // half character only
{
const auto GoodHalf = str_printf(L"%02X", int(RawBuffer[X]));
const auto BadHalf = L"xx";
OutStr += (be? GoodHalf : BadHalf) + (be? BadHalf : GoodHalf);
OutStr.push_back(L' ');
TextStr.push_back(Utf::REPLACE_CHAR);
}
else // no character
{
OutStr.append(5, L' ');
TextStr.push_back(L' ');
}
if (X == 3*2)
{
OutStr +=BorderLine;
}
fpos += 2;
}
}
else
{
if ( SelectSize >= 0 )
{
if (SelectPos >= fpos && SelectPos < fpos+16)
{
const int off = (int)(SelectPos - fpos);
bSelStartFound = true;
SelStart = static_cast<int>(OutStr.size() + 3 * off + (off < 8 ? 0 : BorderLen));
if (!SelectSize)
--SelStart;
}
const auto selectEnd = SelectPos + SelectSize - 1;
if (selectEnd >= fpos && selectEnd < fpos+16)
{
const int off = (int)(selectEnd - fpos);
bSelEndFound = true;
SelEnd = SelectSize? static_cast<int>(OutStr.size() + 3 * off + (off < 8? 0 : BorderLen) + 1) : SelStart;
}
else if ( SelectSize == 0 && SelectPos == fpos )
{
bSelEndFound = true;
SelEnd = SelStart;
}
}
for (size_t X = 0; X != 16; ++X)
{
if (X < BytesRead)
OutStr += str_printf(L"%02X ", int(RawBuffer[X]));
else
OutStr.append(3, L' ');
if (X == 7)
OutStr += BorderLine;
}
tail = txt_dump(RawBuffer, BytesRead, 16, TextStr, ZeroChar(), tail);
}
}
if ((SelEnd <= SelStart) && bSelStartFound && bSelEndFound && SelectSize > 0 )
SelEnd = static_cast<int>(OutStr.size()) - 2;
OutStr.push_back(L' ');
OutStr += TextStr;
if (static_cast<int>(OutStr.size()) > HexLeftPos)
{
Global->FS << fmt::LeftAlign() << fmt::ExactWidth(ObjWidth()) << OutStr.data() + static_cast<size_t>(HexLeftPos);
}