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serene/src/serene-repl/linenoise.h

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/* -*- C++ -*-
* linenoise.h -- Multi-platfrom C++ header-only linenoise library.
*
* All credits and commendations have to go to the authors of the
* following excellent libraries.
*
* - linenoise.h and linenose.c (https://github.com/antirez/linenoise)
* - ANSI.c (https://github.com/adoxa/ansicon)
* - Win32_ANSI.h and Win32_ANSI.c (https://github.com/MSOpenTech/redis)
*
* ------------------------------------------------------------------------
*
* Copyright (c) 2015 yhirose
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
/* linenoise.h -- guerrilla line editing library against the idea that a
* line editing lib needs to be 20,000 lines of C code.
*
* See linenoise.c for more information.
*
* ------------------------------------------------------------------------
*
* Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* HOLDER OR CONTRIBUTORS 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.
*/
/*
* ANSI.c - ANSI escape sequence console driver.
*
* Copyright (C) 2005-2014 Jason Hood
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the author be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*
* Jason Hood
* jadoxa@yahoo.com.au
*/
/*
* Win32_ANSI.h and Win32_ANSI.c
*
* Derived from ANSI.c by Jason Hood, from his ansicon project
* (https://github.com/adoxa/ansicon), with modifications.
*
* Copyright (c), Microsoft Open Technologies, Inc.
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#ifndef LINENOISE_HPP
#define LINENOISE_HPP
#ifndef _WIN32
#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
#else
#ifndef NOMINMAX
#define NOMINMAX
#endif
#include <Windows.h>
#include <io.h>
#ifndef STDIN_FILENO
#define STDIN_FILENO (_fileno(stdin))
#endif
#ifndef STDOUT_FILENO
#define STDOUT_FILENO 1
#endif
#define isatty _isatty
#define write win32_write
#define read _read
#pragma warning(push)
#pragma warning(disable : 4996)
#endif
#include <ctype.h>
#include <errno.h>
#include <fstream>
#include <functional>
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <sys/types.h>
#include <vector>
namespace linenoise {
typedef std::function<void(const char *, std::vector<std::string> &)>
CompletionCallback;
#ifdef _WIN32
namespace ansi {
#define lenof(array) (sizeof(array) / sizeof(*(array)))
typedef struct {
BYTE foreground; // ANSI base color (0 to 7; add 30)
BYTE background; // ANSI base color (0 to 7; add 40)
BYTE bold; // console FOREGROUND_INTENSITY bit
BYTE underline; // console BACKGROUND_INTENSITY bit
BYTE rvideo; // swap foreground/bold & background/underline
BYTE concealed; // set foreground/bold to background/underline
BYTE reverse; // swap console foreground & background attributes
} GRM, *PGRM; // Graphic Rendition Mode
inline bool is_digit(char c) { return '0' <= c && c <= '9'; }
// ========== Global variables and constants
HANDLE hConOut; // handle to CONOUT$
const char ESC = '\x1B'; // ESCape character
const char BEL = '\x07';
const char SO = '\x0E'; // Shift Out
const char SI = '\x0F'; // Shift In
const int MAX_ARG = 16; // max number of args in an escape sequence
int state; // automata state
WCHAR prefix; // escape sequence prefix ( '[', ']' or '(' );
WCHAR prefix2; // secondary prefix ( '?' or '>' );
WCHAR suffix; // escape sequence suffix
int es_argc; // escape sequence args count
int es_argv[MAX_ARG]; // escape sequence args
WCHAR Pt_arg[MAX_PATH * 2]; // text parameter for Operating System Command
int Pt_len;
BOOL shifted;
// DEC Special Graphics Character Set from
// http://vt100.net/docs/vt220-rm/table2-4.html
// Some of these may not look right, depending on the font and code page (in
// particular, the Control Pictures probably won't work at all).
const WCHAR G1[] = {
' ', // _ - blank
L'\x2666', // ` - Black Diamond Suit
L'\x2592', // a - Medium Shade
L'\x2409', // b - HT
L'\x240c', // c - FF
L'\x240d', // d - CR
L'\x240a', // e - LF
L'\x00b0', // f - Degree Sign
L'\x00b1', // g - Plus-Minus Sign
L'\x2424', // h - NL
L'\x240b', // i - VT
L'\x2518', // j - Box Drawings Light Up And Left
L'\x2510', // k - Box Drawings Light Down And Left
L'\x250c', // l - Box Drawings Light Down And Right
L'\x2514', // m - Box Drawings Light Up And Right
L'\x253c', // n - Box Drawings Light Vertical And Horizontal
L'\x00af', // o - SCAN 1 - Macron
L'\x25ac', // p - SCAN 3 - Black Rectangle
L'\x2500', // q - SCAN 5 - Box Drawings Light Horizontal
L'_', // r - SCAN 7 - Low Line
L'_', // s - SCAN 9 - Low Line
L'\x251c', // t - Box Drawings Light Vertical And Right
L'\x2524', // u - Box Drawings Light Vertical And Left
L'\x2534', // v - Box Drawings Light Up And Horizontal
L'\x252c', // w - Box Drawings Light Down And Horizontal
L'\x2502', // x - Box Drawings Light Vertical
L'\x2264', // y - Less-Than Or Equal To
L'\x2265', // z - Greater-Than Or Equal To
L'\x03c0', // { - Greek Small Letter Pi
L'\x2260', // | - Not Equal To
L'\x00a3', // } - Pound Sign
L'\x00b7', // ~ - Middle Dot
};
#define FIRST_G1 '_'
#define LAST_G1 '~'
// color constants
#define FOREGROUND_BLACK 0
#define FOREGROUND_WHITE FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
#define BACKGROUND_BLACK 0
#define BACKGROUND_WHITE BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
const BYTE foregroundcolor[8] = {
FOREGROUND_BLACK, // black foreground
FOREGROUND_RED, // red foreground
FOREGROUND_GREEN, // green foreground
FOREGROUND_RED | FOREGROUND_GREEN, // yellow foreground
FOREGROUND_BLUE, // blue foreground
FOREGROUND_BLUE | FOREGROUND_RED, // magenta foreground
FOREGROUND_BLUE | FOREGROUND_GREEN, // cyan foreground
FOREGROUND_WHITE // white foreground
};
const BYTE backgroundcolor[8] = {
BACKGROUND_BLACK, // black background
BACKGROUND_RED, // red background
BACKGROUND_GREEN, // green background
BACKGROUND_RED | BACKGROUND_GREEN, // yellow background
BACKGROUND_BLUE, // blue background
BACKGROUND_BLUE | BACKGROUND_RED, // magenta background
BACKGROUND_BLUE | BACKGROUND_GREEN, // cyan background
BACKGROUND_WHITE, // white background
};
const BYTE attr2ansi[8] = // map console attribute to ANSI number
{
0, // black
4, // blue
2, // green
6, // cyan
1, // red
5, // magenta
3, // yellow
7 // white
};
GRM grm;
// saved cursor position
COORD SavePos;
// ========== Print Buffer functions
#define BUFFER_SIZE 2048
int nCharInBuffer;
WCHAR ChBuffer[BUFFER_SIZE];
//-----------------------------------------------------------------------------
// FlushBuffer()
// Writes the buffer to the console and empties it.
//-----------------------------------------------------------------------------
inline void FlushBuffer(void) {
DWORD nWritten;
if (nCharInBuffer <= 0)
return;
WriteConsoleW(hConOut, ChBuffer, nCharInBuffer, &nWritten, NULL);
nCharInBuffer = 0;
}
//-----------------------------------------------------------------------------
// PushBuffer( WCHAR c )
// Adds a character in the buffer.
//-----------------------------------------------------------------------------
inline void PushBuffer(WCHAR c) {
if (shifted && c >= FIRST_G1 && c <= LAST_G1)
c = G1[c - FIRST_G1];
ChBuffer[nCharInBuffer] = c;
if (++nCharInBuffer == BUFFER_SIZE)
FlushBuffer();
}
//-----------------------------------------------------------------------------
// SendSequence( LPCWSTR seq )
// Send the string to the input buffer.
//-----------------------------------------------------------------------------
inline void SendSequence(LPCWSTR seq) {
DWORD out;
INPUT_RECORD in;
HANDLE hStdIn = GetStdHandle(STD_INPUT_HANDLE);
in.EventType = KEY_EVENT;
in.Event.KeyEvent.bKeyDown = TRUE;
in.Event.KeyEvent.wRepeatCount = 1;
in.Event.KeyEvent.wVirtualKeyCode = 0;
in.Event.KeyEvent.wVirtualScanCode = 0;
in.Event.KeyEvent.dwControlKeyState = 0;
for (; *seq; ++seq) {
in.Event.KeyEvent.uChar.UnicodeChar = *seq;
WriteConsoleInput(hStdIn, &in, 1, &out);
}
}
// ========== Print functions
//-----------------------------------------------------------------------------
// InterpretEscSeq()
// Interprets the last escape sequence scanned by ParseAndPrintANSIString
// prefix escape sequence prefix
// es_argc escape sequence args count
// es_argv[] escape sequence args array
// suffix escape sequence suffix
//
// for instance, with \e[33;45;1m we have
// prefix = '[',
// es_argc = 3, es_argv[0] = 33, es_argv[1] = 45, es_argv[2] = 1
// suffix = 'm'
//-----------------------------------------------------------------------------
inline void InterpretEscSeq(void) {
int i;
WORD attribut;
CONSOLE_SCREEN_BUFFER_INFO Info;
CONSOLE_CURSOR_INFO CursInfo;
DWORD len, NumberOfCharsWritten;
COORD Pos;
SMALL_RECT Rect;
CHAR_INFO CharInfo;
if (prefix == '[') {
if (prefix2 == '?' && (suffix == 'h' || suffix == 'l')) {
if (es_argc == 1 && es_argv[0] == 25) {
GetConsoleCursorInfo(hConOut, &CursInfo);
CursInfo.bVisible = (suffix == 'h');
SetConsoleCursorInfo(hConOut, &CursInfo);
return;
}
}
// Ignore any other \e[? or \e[> sequences.
if (prefix2 != 0)
return;
GetConsoleScreenBufferInfo(hConOut, &Info);
switch (suffix) {
case 'm':
if (es_argc == 0)
es_argv[es_argc++] = 0;
for (i = 0; i < es_argc; i++) {
if (30 <= es_argv[i] && es_argv[i] <= 37)
grm.foreground = es_argv[i] - 30;
else if (40 <= es_argv[i] && es_argv[i] <= 47)
grm.background = es_argv[i] - 40;
else
switch (es_argv[i]) {
case 0:
case 39:
case 49: {
WCHAR def[4];
int a;
*def = '7';
def[1] = '\0';
GetEnvironmentVariableW(L"ANSICON_DEF", def, lenof(def));
a = wcstol(def, NULL, 16);
grm.reverse = FALSE;
if (a < 0) {
grm.reverse = TRUE;
a = -a;
}
if (es_argv[i] != 49)
grm.foreground = attr2ansi[a & 7];
if (es_argv[i] != 39)
grm.background = attr2ansi[(a >> 4) & 7];
if (es_argv[i] == 0) {
if (es_argc == 1) {
grm.bold = a & FOREGROUND_INTENSITY;
grm.underline = a & BACKGROUND_INTENSITY;
} else {
grm.bold = 0;
grm.underline = 0;
}
grm.rvideo = 0;
grm.concealed = 0;
}
} break;
case 1:
grm.bold = FOREGROUND_INTENSITY;
break;
case 5: // blink
case 4:
grm.underline = BACKGROUND_INTENSITY;
break;
case 7:
grm.rvideo = 1;
break;
case 8:
grm.concealed = 1;
break;
case 21: // oops, this actually turns on double underline
case 22:
grm.bold = 0;
break;
case 25:
case 24:
grm.underline = 0;
break;
case 27:
grm.rvideo = 0;
break;
case 28:
grm.concealed = 0;
break;
}
}
if (grm.concealed) {
if (grm.rvideo) {
attribut =
foregroundcolor[grm.foreground] | backgroundcolor[grm.foreground];
if (grm.bold)
attribut |= FOREGROUND_INTENSITY | BACKGROUND_INTENSITY;
} else {
attribut =
foregroundcolor[grm.background] | backgroundcolor[grm.background];
if (grm.underline)
attribut |= FOREGROUND_INTENSITY | BACKGROUND_INTENSITY;
}
} else if (grm.rvideo) {
attribut =
foregroundcolor[grm.background] | backgroundcolor[grm.foreground];
if (grm.bold)
attribut |= BACKGROUND_INTENSITY;
if (grm.underline)
attribut |= FOREGROUND_INTENSITY;
} else
attribut = foregroundcolor[grm.foreground] | grm.bold |
backgroundcolor[grm.background] | grm.underline;
if (grm.reverse)
attribut = ((attribut >> 4) & 15) | ((attribut & 15) << 4);
SetConsoleTextAttribute(hConOut, attribut);
return;
case 'J':
if (es_argc == 0)
es_argv[es_argc++] = 0; // ESC[J == ESC[0J
if (es_argc != 1)
return;
switch (es_argv[0]) {
case 0: // ESC[0J erase from cursor to end of display
len = (Info.dwSize.Y - Info.dwCursorPosition.Y - 1) * Info.dwSize.X +
Info.dwSize.X - Info.dwCursorPosition.X - 1;
FillConsoleOutputCharacter(hConOut, ' ', len, Info.dwCursorPosition,
&NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes, len,
Info.dwCursorPosition,
&NumberOfCharsWritten);
return;
case 1: // ESC[1J erase from start to cursor.
Pos.X = 0;
Pos.Y = 0;
len = Info.dwCursorPosition.Y * Info.dwSize.X +
Info.dwCursorPosition.X + 1;
FillConsoleOutputCharacter(hConOut, ' ', len, Pos,
&NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes, len, Pos,
&NumberOfCharsWritten);
return;
case 2: // ESC[2J Clear screen and home cursor
Pos.X = 0;
Pos.Y = 0;
len = Info.dwSize.X * Info.dwSize.Y;
FillConsoleOutputCharacter(hConOut, ' ', len, Pos,
&NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes, len, Pos,
&NumberOfCharsWritten);
SetConsoleCursorPosition(hConOut, Pos);
return;
default:
return;
}
case 'K':
if (es_argc == 0)
es_argv[es_argc++] = 0; // ESC[K == ESC[0K
if (es_argc != 1)
return;
switch (es_argv[0]) {
case 0: // ESC[0K Clear to end of line
len = Info.dwSize.X - Info.dwCursorPosition.X + 1;
FillConsoleOutputCharacter(hConOut, ' ', len, Info.dwCursorPosition,
&NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes, len,
Info.dwCursorPosition,
&NumberOfCharsWritten);
return;
case 1: // ESC[1K Clear from start of line to cursor
Pos.X = 0;
Pos.Y = Info.dwCursorPosition.Y;
FillConsoleOutputCharacter(hConOut, ' ', Info.dwCursorPosition.X + 1,
Pos, &NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes,
Info.dwCursorPosition.X + 1, Pos,
&NumberOfCharsWritten);
return;
case 2: // ESC[2K Clear whole line.
Pos.X = 0;
Pos.Y = Info.dwCursorPosition.Y;
FillConsoleOutputCharacter(hConOut, ' ', Info.dwSize.X, Pos,
&NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes, Info.dwSize.X,
Pos, &NumberOfCharsWritten);
return;
default:
return;
}
case 'X': // ESC[#X Erase # characters.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[X == ESC[1X
if (es_argc != 1)
return;
FillConsoleOutputCharacter(hConOut, ' ', es_argv[0],
Info.dwCursorPosition, &NumberOfCharsWritten);
FillConsoleOutputAttribute(hConOut, Info.wAttributes, es_argv[0],
Info.dwCursorPosition, &NumberOfCharsWritten);
return;
case 'L': // ESC[#L Insert # blank lines.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[L == ESC[1L
if (es_argc != 1)
return;
Rect.Left = 0;
Rect.Top = Info.dwCursorPosition.Y;
Rect.Right = Info.dwSize.X - 1;
Rect.Bottom = Info.dwSize.Y - 1;
Pos.X = 0;
Pos.Y = Info.dwCursorPosition.Y + es_argv[0];
CharInfo.Char.UnicodeChar = ' ';
CharInfo.Attributes = Info.wAttributes;
ScrollConsoleScreenBuffer(hConOut, &Rect, NULL, Pos, &CharInfo);
return;
case 'M': // ESC[#M Delete # lines.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[M == ESC[1M
if (es_argc != 1)
return;
if (es_argv[0] > Info.dwSize.Y - Info.dwCursorPosition.Y)
es_argv[0] = Info.dwSize.Y - Info.dwCursorPosition.Y;
Rect.Left = 0;
Rect.Top = Info.dwCursorPosition.Y + es_argv[0];
Rect.Right = Info.dwSize.X - 1;
Rect.Bottom = Info.dwSize.Y - 1;
Pos.X = 0;
Pos.Y = Info.dwCursorPosition.Y;
CharInfo.Char.UnicodeChar = ' ';
CharInfo.Attributes = Info.wAttributes;
ScrollConsoleScreenBuffer(hConOut, &Rect, NULL, Pos, &CharInfo);
return;
case 'P': // ESC[#P Delete # characters.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[P == ESC[1P
if (es_argc != 1)
return;
if (Info.dwCursorPosition.X + es_argv[0] > Info.dwSize.X - 1)
es_argv[0] = Info.dwSize.X - Info.dwCursorPosition.X;
Rect.Left = Info.dwCursorPosition.X + es_argv[0];
Rect.Top = Info.dwCursorPosition.Y;
Rect.Right = Info.dwSize.X - 1;
Rect.Bottom = Info.dwCursorPosition.Y;
CharInfo.Char.UnicodeChar = ' ';
CharInfo.Attributes = Info.wAttributes;
ScrollConsoleScreenBuffer(hConOut, &Rect, NULL, Info.dwCursorPosition,
&CharInfo);
return;
case '@': // ESC[#@ Insert # blank characters.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[@ == ESC[1@
if (es_argc != 1)
return;
if (Info.dwCursorPosition.X + es_argv[0] > Info.dwSize.X - 1)
es_argv[0] = Info.dwSize.X - Info.dwCursorPosition.X;
Rect.Left = Info.dwCursorPosition.X;
Rect.Top = Info.dwCursorPosition.Y;
Rect.Right = Info.dwSize.X - 1 - es_argv[0];
Rect.Bottom = Info.dwCursorPosition.Y;
Pos.X = Info.dwCursorPosition.X + es_argv[0];
Pos.Y = Info.dwCursorPosition.Y;
CharInfo.Char.UnicodeChar = ' ';
CharInfo.Attributes = Info.wAttributes;
ScrollConsoleScreenBuffer(hConOut, &Rect, NULL, Pos, &CharInfo);
return;
case 'k': // ESC[#k
case 'A': // ESC[#A Moves cursor up # lines
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[A == ESC[1A
if (es_argc != 1)
return;
Pos.Y = Info.dwCursorPosition.Y - es_argv[0];
if (Pos.Y < 0)
Pos.Y = 0;
Pos.X = Info.dwCursorPosition.X;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'e': // ESC[#e
case 'B': // ESC[#B Moves cursor down # lines
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[B == ESC[1B
if (es_argc != 1)
return;
Pos.Y = Info.dwCursorPosition.Y + es_argv[0];
if (Pos.Y >= Info.dwSize.Y)
Pos.Y = Info.dwSize.Y - 1;
Pos.X = Info.dwCursorPosition.X;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'a': // ESC[#a
case 'C': // ESC[#C Moves cursor forward # spaces
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[C == ESC[1C
if (es_argc != 1)
return;
Pos.X = Info.dwCursorPosition.X + es_argv[0];
if (Pos.X >= Info.dwSize.X)
Pos.X = Info.dwSize.X - 1;
Pos.Y = Info.dwCursorPosition.Y;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'j': // ESC[#j
case 'D': // ESC[#D Moves cursor back # spaces
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[D == ESC[1D
if (es_argc != 1)
return;
Pos.X = Info.dwCursorPosition.X - es_argv[0];
if (Pos.X < 0)
Pos.X = 0;
Pos.Y = Info.dwCursorPosition.Y;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'E': // ESC[#E Moves cursor down # lines, column 1.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[E == ESC[1E
if (es_argc != 1)
return;
Pos.Y = Info.dwCursorPosition.Y + es_argv[0];
if (Pos.Y >= Info.dwSize.Y)
Pos.Y = Info.dwSize.Y - 1;
Pos.X = 0;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'F': // ESC[#F Moves cursor up # lines, column 1.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[F == ESC[1F
if (es_argc != 1)
return;
Pos.Y = Info.dwCursorPosition.Y - es_argv[0];
if (Pos.Y < 0)
Pos.Y = 0;
Pos.X = 0;
SetConsoleCursorPosition(hConOut, Pos);
return;
case '`': // ESC[#`
case 'G': // ESC[#G Moves cursor column # in current row.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[G == ESC[1G
if (es_argc != 1)
return;
Pos.X = es_argv[0] - 1;
if (Pos.X >= Info.dwSize.X)
Pos.X = Info.dwSize.X - 1;
if (Pos.X < 0)
Pos.X = 0;
Pos.Y = Info.dwCursorPosition.Y;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'd': // ESC[#d Moves cursor row #, current column.
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[d == ESC[1d
if (es_argc != 1)
return;
Pos.Y = es_argv[0] - 1;
if (Pos.Y < 0)
Pos.Y = 0;
if (Pos.Y >= Info.dwSize.Y)
Pos.Y = Info.dwSize.Y - 1;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 'f': // ESC[#;#f
case 'H': // ESC[#;#H Moves cursor to line #, column #
if (es_argc == 0)
es_argv[es_argc++] = 1; // ESC[H == ESC[1;1H
if (es_argc == 1)
es_argv[es_argc++] = 1; // ESC[#H == ESC[#;1H
if (es_argc > 2)
return;
Pos.X = es_argv[1] - 1;
if (Pos.X < 0)
Pos.X = 0;
if (Pos.X >= Info.dwSize.X)
Pos.X = Info.dwSize.X - 1;
Pos.Y = es_argv[0] - 1;
if (Pos.Y < 0)
Pos.Y = 0;
if (Pos.Y >= Info.dwSize.Y)
Pos.Y = Info.dwSize.Y - 1;
SetConsoleCursorPosition(hConOut, Pos);
return;
case 's': // ESC[s Saves cursor position for recall later
if (es_argc != 0)
return;
SavePos = Info.dwCursorPosition;
return;
case 'u': // ESC[u Return to saved cursor position
if (es_argc != 0)
return;
SetConsoleCursorPosition(hConOut, SavePos);
return;
case 'n': // ESC[#n Device status report
if (es_argc != 1)
return; // ESC[n == ESC[0n -> ignored
switch (es_argv[0]) {
case 5: // ESC[5n Report status
SendSequence(L"\33[0n"); // "OK"
return;
case 6: // ESC[6n Report cursor position
{
WCHAR buf[32];
swprintf(buf, 32, L"\33[%d;%dR", Info.dwCursorPosition.Y + 1,
Info.dwCursorPosition.X + 1);
SendSequence(buf);
}
return;
default:
return;
}
case 't': // ESC[#t Window manipulation
if (es_argc != 1)
return;
if (es_argv[0] == 21) // ESC[21t Report xterm window's title
{
WCHAR buf[MAX_PATH * 2];
len = GetConsoleTitleW(buf + 3, lenof(buf) - 3 - 2);
// Too bad if it's too big or fails.
buf[0] = ESC;
buf[1] = ']';
buf[2] = 'l';
buf[3 + len] = ESC;
buf[3 + len + 1] = '\\';
buf[3 + len + 2] = '\0';
SendSequence(buf);
}
return;
default:
return;
}
} else // (prefix == ']')
{
// Ignore any \e]? or \e]> sequences.
if (prefix2 != 0)
return;
if (es_argc == 1 && es_argv[0] == 0) // ESC]0;titleST
{
SetConsoleTitleW(Pt_arg);
}
}
}
//-----------------------------------------------------------------------------
// ParseAndPrintANSIString(hDev, lpBuffer, nNumberOfBytesToWrite)
// Parses the string lpBuffer, interprets the escapes sequences and prints the
// characters in the device hDev (console).
// The lexer is a three states automata.
// If the number of arguments es_argc > MAX_ARG, only the MAX_ARG-1 firsts and
// the last arguments are processed (no es_argv[] overflow).
//-----------------------------------------------------------------------------
inline BOOL ParseAndPrintANSIString(HANDLE hDev, LPCVOID lpBuffer,
DWORD nNumberOfBytesToWrite,
LPDWORD lpNumberOfBytesWritten) {
DWORD i;
LPCSTR s;
if (hDev != hConOut) // reinit if device has changed
{
hConOut = hDev;
state = 1;
shifted = FALSE;
}
for (i = nNumberOfBytesToWrite, s = (LPCSTR)lpBuffer; i > 0; i--, s++) {
if (state == 1) {
if (*s == ESC)
state = 2;
else if (*s == SO)
shifted = TRUE;
else if (*s == SI)
shifted = FALSE;
else
PushBuffer(*s);
} else if (state == 2) {
if (*s == ESC)
; // \e\e...\e == \e
else if ((*s == '[') || (*s == ']')) {
FlushBuffer();
prefix = *s;
prefix2 = 0;
state = 3;
Pt_len = 0;
*Pt_arg = '\0';
} else if (*s == ')' || *s == '(')
state = 6;
else
state = 1;
} else if (state == 3) {
if (is_digit(*s)) {
es_argc = 0;
es_argv[0] = *s - '0';
state = 4;
} else if (*s == ';') {
es_argc = 1;
es_argv[0] = 0;
es_argv[1] = 0;
state = 4;
} else if (*s == '?' || *s == '>') {
prefix2 = *s;
} else {
es_argc = 0;
suffix = *s;
InterpretEscSeq();
state = 1;
}
} else if (state == 4) {
if (is_digit(*s)) {
es_argv[es_argc] = 10 * es_argv[es_argc] + (*s - '0');
} else if (*s == ';') {
if (es_argc < MAX_ARG - 1)
es_argc++;
es_argv[es_argc] = 0;
if (prefix == ']')
state = 5;
} else {
es_argc++;
suffix = *s;
InterpretEscSeq();
state = 1;
}
} else if (state == 5) {
if (*s == BEL) {
Pt_arg[Pt_len] = '\0';
InterpretEscSeq();
state = 1;
} else if (*s == '\\' && Pt_len > 0 && Pt_arg[Pt_len - 1] == ESC) {
Pt_arg[--Pt_len] = '\0';
InterpretEscSeq();
state = 1;
} else if (Pt_len < lenof(Pt_arg) - 1)
Pt_arg[Pt_len++] = *s;
} else if (state == 6) {
// Ignore it (ESC ) 0 is implicit; nothing else is supported).
state = 1;
}
}
FlushBuffer();
if (lpNumberOfBytesWritten != NULL)
*lpNumberOfBytesWritten = nNumberOfBytesToWrite - i;
return (i == 0);
}
} // namespace ansi
HANDLE hOut;
HANDLE hIn;
DWORD consolemodeIn = 0;
inline int win32read(int *c) {
DWORD foo;
INPUT_RECORD b;
KEY_EVENT_RECORD e;
BOOL altgr;
while (1) {
if (!ReadConsoleInput(hIn, &b, 1, &foo))
return 0;
if (!foo)
return 0;
if (b.EventType == KEY_EVENT && b.Event.KeyEvent.bKeyDown) {
e = b.Event.KeyEvent;
*c = b.Event.KeyEvent.uChar.AsciiChar;
altgr = e.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_ALT_PRESSED);
if (e.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED) &&
!altgr) {
/* Ctrl+Key */
switch (*c) {
case 'D':
*c = 4;
return 1;
case 'C':
*c = 3;
return 1;
case 'H':
*c = 8;
return 1;
case 'T':
*c = 20;
return 1;
case 'B': /* ctrl-b, left_arrow */
*c = 2;
return 1;
case 'F': /* ctrl-f right_arrow*/
*c = 6;
return 1;
case 'P': /* ctrl-p up_arrow*/
*c = 16;
return 1;
case 'N': /* ctrl-n down_arrow*/
*c = 14;
return 1;
case 'U': /* Ctrl+u, delete the whole line. */
*c = 21;
return 1;
case 'K': /* Ctrl+k, delete from current to end of line. */
*c = 11;
return 1;
case 'A': /* Ctrl+a, go to the start of the line */
*c = 1;
return 1;
case 'E': /* ctrl+e, go to the end of the line */
*c = 5;
return 1;
}
/* Other Ctrl+KEYs ignored */
} else {
switch (e.wVirtualKeyCode) {
case VK_ESCAPE: /* ignore - send ctrl-c, will return -1 */
*c = 3;
return 1;
case VK_RETURN: /* enter */
*c = 13;
return 1;
case VK_LEFT: /* left */
*c = 2;
return 1;
case VK_RIGHT: /* right */
*c = 6;
return 1;
case VK_UP: /* up */
*c = 16;
return 1;
case VK_DOWN: /* down */
*c = 14;
return 1;
case VK_HOME:
*c = 1;
return 1;
case VK_END:
*c = 5;
return 1;
case VK_BACK:
*c = 8;
return 1;
case VK_DELETE:
*c = 4; /* same as Ctrl+D above */
return 1;
default:
if (*c)
return 1;
}
}
}
}
return -1; /* Makes compiler happy */
}
inline int win32_write(int fd, const void *buffer, unsigned int count) {
if (fd == _fileno(stdout)) {
DWORD bytesWritten = 0;
if (FALSE != ansi::ParseAndPrintANSIString(GetStdHandle(STD_OUTPUT_HANDLE),
buffer, (DWORD)count,
&bytesWritten)) {
return (int)bytesWritten;
} else {
errno = GetLastError();
return 0;
}
} else if (fd == _fileno(stderr)) {
DWORD bytesWritten = 0;
if (FALSE != ansi::ParseAndPrintANSIString(GetStdHandle(STD_ERROR_HANDLE),
buffer, (DWORD)count,
&bytesWritten)) {
return (int)bytesWritten;
} else {
errno = GetLastError();
return 0;
}
} else {
return _write(fd, buffer, count);
}
}
#endif // _WIN32
#define LINENOISE_DEFAULT_HISTORY_MAX_LEN 100
#define LINENOISE_MAX_LINE 4096
static const char *unsupported_term[] = {"dumb", "cons25", "emacs", NULL};
static CompletionCallback completionCallback;
#ifndef _WIN32
static struct termios orig_termios; /* In order to restore at exit.*/
#endif
static bool rawmode =
false; /* For atexit() function to check if restore is needed*/
static bool mlmode = false; /* Multi line mode. Default is single line. */
static bool atexit_registered = false; /* Register atexit just 1 time. */
static size_t history_max_len = LINENOISE_DEFAULT_HISTORY_MAX_LEN;
static std::vector<std::string> history;
/* The linenoiseState structure represents the state during line editing.
* We pass this state to functions implementing specific editing
* functionalities. */
struct linenoiseState {
int ifd; /* Terminal stdin file descriptor. */
int ofd; /* Terminal stdout file descriptor. */
char *buf; /* Edited line buffer. */
int buflen; /* Edited line buffer size. */
std::string prompt; /* Prompt to display. */
int pos; /* Current cursor position. */
int oldcolpos; /* Previous refresh cursor column position. */
int len; /* Current edited line length. */
int cols; /* Number of columns in terminal. */
int maxrows; /* Maximum num of rows used so far (multiline mode) */
int history_index; /* The history index we are currently editing. */
};
enum KEY_ACTION {
KEY_NULL = 0, /* NULL */
CTRL_A = 1, /* Ctrl+a */
CTRL_B = 2, /* Ctrl-b */
CTRL_C = 3, /* Ctrl-c */
CTRL_D = 4, /* Ctrl-d */
CTRL_E = 5, /* Ctrl-e */
CTRL_F = 6, /* Ctrl-f */
CTRL_H = 8, /* Ctrl-h */
TAB = 9, /* Tab */
CTRL_K = 11, /* Ctrl+k */
CTRL_L = 12, /* Ctrl+l */
ENTER = 13, /* Enter */
CTRL_N = 14, /* Ctrl-n */
CTRL_P = 16, /* Ctrl-p */
CTRL_T = 20, /* Ctrl-t */
CTRL_U = 21, /* Ctrl+u */
CTRL_W = 23, /* Ctrl+w */
ESC = 27, /* Escape */
BACKSPACE = 127 /* Backspace */
};
void linenoiseAtExit(void);
bool AddHistory(const char *line);
void refreshLine(struct linenoiseState *l);
/* ============================ UTF8 utilities ============================== */
static unsigned long unicodeWideCharTable[][2] = {
{0x1100, 0x115F},
{0x2329, 0x232A},
{
0x2E80,
0x2E99,
},
{
0x2E9B,
0x2EF3,
},
{
0x2F00,
0x2FD5,
},
{
0x2FF0,
0x2FFB,
},
{
0x3000,
0x303E,
},
{
0x3041,
0x3096,
},
{
0x3099,
0x30FF,
},
{
0x3105,
0x312D,
},
{
0x3131,
0x318E,
},
{
0x3190,
0x31BA,
},
{
0x31C0,
0x31E3,
},
{
0x31F0,
0x321E,
},
{
0x3220,
0x3247,
},
{
0x3250,
0x4DBF,
},
{
0x4E00,
0xA48C,
},
{
0xA490,
0xA4C6,
},
{
0xA960,
0xA97C,
},
{
0xAC00,
0xD7A3,
},
{
0xF900,
0xFAFF,
},
{
0xFE10,
0xFE19,
},
{
0xFE30,
0xFE52,
},
{
0xFE54,
0xFE66,
},
{
0xFE68,
0xFE6B,
},
{
0xFF01,
0xFFE6,
},
{
0x1B000,
0x1B001,
},
{
0x1F200,
0x1F202,
},
{
0x1F210,
0x1F23A,
},
{
0x1F240,
0x1F248,
},
{
0x1F250,
0x1F251,
},
{
0x20000,
0x3FFFD,
},
};
static int unicodeWideCharTableSize =
sizeof(unicodeWideCharTable) / sizeof(unicodeWideCharTable[0]);
static int unicodeIsWideChar(unsigned long cp) {
int i;
for (i = 0; i < unicodeWideCharTableSize; i++) {
if (unicodeWideCharTable[i][0] <= cp && cp <= unicodeWideCharTable[i][1]) {
return 1;
}
}
return 0;
}
static unsigned long unicodeCombiningCharTable[] = {
0x0300, 0x0301, 0x0302, 0x0303, 0x0304, 0x0305, 0x0306, 0x0307,
0x0308, 0x0309, 0x030A, 0x030B, 0x030C, 0x030D, 0x030E, 0x030F,
0x0310, 0x0311, 0x0312, 0x0313, 0x0314, 0x0315, 0x0316, 0x0317,
0x0318, 0x0319, 0x031A, 0x031B, 0x031C, 0x031D, 0x031E, 0x031F,
0x0320, 0x0321, 0x0322, 0x0323, 0x0324, 0x0325, 0x0326, 0x0327,
0x0328, 0x0329, 0x032A, 0x032B, 0x032C, 0x032D, 0x032E, 0x032F,
0x0330, 0x0331, 0x0332, 0x0333, 0x0334, 0x0335, 0x0336, 0x0337,
0x0338, 0x0339, 0x033A, 0x033B, 0x033C, 0x033D, 0x033E, 0x033F,
0x0340, 0x0341, 0x0342, 0x0343, 0x0344, 0x0345, 0x0346, 0x0347,
0x0348, 0x0349, 0x034A, 0x034B, 0x034C, 0x034D, 0x034E, 0x034F,
0x0350, 0x0351, 0x0352, 0x0353, 0x0354, 0x0355, 0x0356, 0x0357,
0x0358, 0x0359, 0x035A, 0x035B, 0x035C, 0x035D, 0x035E, 0x035F,
0x0360, 0x0361, 0x0362, 0x0363, 0x0364, 0x0365, 0x0366, 0x0367,
0x0368, 0x0369, 0x036A, 0x036B, 0x036C, 0x036D, 0x036E, 0x036F,
0x0483, 0x0484, 0x0485, 0x0486, 0x0487, 0x0591, 0x0592, 0x0593,
0x0594, 0x0595, 0x0596, 0x0597, 0x0598, 0x0599, 0x059A, 0x059B,
0x059C, 0x059D, 0x059E, 0x059F, 0x05A0, 0x05A1, 0x05A2, 0x05A3,
0x05A4, 0x05A5, 0x05A6, 0x05A7, 0x05A8, 0x05A9, 0x05AA, 0x05AB,
0x05AC, 0x05AD, 0x05AE, 0x05AF, 0x05B0, 0x05B1, 0x05B2, 0x05B3,
0x05B4, 0x05B5, 0x05B6, 0x05B7, 0x05B8, 0x05B9, 0x05BA, 0x05BB,
0x05BC, 0x05BD, 0x05BF, 0x05C1, 0x05C2, 0x05C4, 0x05C5, 0x05C7,
0x0610, 0x0611, 0x0612, 0x0613, 0x0614, 0x0615, 0x0616, 0x0617,
0x0618, 0x0619, 0x061A, 0x064B, 0x064C, 0x064D, 0x064E, 0x064F,
0x0650, 0x0651, 0x0652, 0x0653, 0x0654, 0x0655, 0x0656, 0x0657,
0x0658, 0x0659, 0x065A, 0x065B, 0x065C, 0x065D, 0x065E, 0x065F,
0x0670, 0x06D6, 0x06D7, 0x06D8, 0x06D9, 0x06DA, 0x06DB, 0x06DC,
0x06DF, 0x06E0, 0x06E1, 0x06E2, 0x06E3, 0x06E4, 0x06E7, 0x06E8,
0x06EA, 0x06EB, 0x06EC, 0x06ED, 0x0711, 0x0730, 0x0731, 0x0732,
0x0733, 0x0734, 0x0735, 0x0736, 0x0737, 0x0738, 0x0739, 0x073A,
0x073B, 0x073C, 0x073D, 0x073E, 0x073F, 0x0740, 0x0741, 0x0742,
0x0743, 0x0744, 0x0745, 0x0746, 0x0747, 0x0748, 0x0749, 0x074A,
0x07A6, 0x07A7, 0x07A8, 0x07A9, 0x07AA, 0x07AB, 0x07AC, 0x07AD,
0x07AE, 0x07AF, 0x07B0, 0x07EB, 0x07EC, 0x07ED, 0x07EE, 0x07EF,
0x07F0, 0x07F1, 0x07F2, 0x07F3, 0x0816, 0x0817, 0x0818, 0x0819,
0x081B, 0x081C, 0x081D, 0x081E, 0x081F, 0x0820, 0x0821, 0x0822,
0x0823, 0x0825, 0x0826, 0x0827, 0x0829, 0x082A, 0x082B, 0x082C,
0x082D, 0x0859, 0x085A, 0x085B, 0x08E3, 0x08E4, 0x08E5, 0x08E6,
0x08E7, 0x08E8, 0x08E9, 0x08EA, 0x08EB, 0x08EC, 0x08ED, 0x08EE,
0x08EF, 0x08F0, 0x08F1, 0x08F2, 0x08F3, 0x08F4, 0x08F5, 0x08F6,
0x08F7, 0x08F8, 0x08F9, 0x08FA, 0x08FB, 0x08FC, 0x08FD, 0x08FE,
0x08FF, 0x0900, 0x0901, 0x0902, 0x093A, 0x093C, 0x0941, 0x0942,
0x0943, 0x0944, 0x0945, 0x0946, 0x0947, 0x0948, 0x094D, 0x0951,
0x0952, 0x0953, 0x0954, 0x0955, 0x0956, 0x0957, 0x0962, 0x0963,
0x0981, 0x09BC, 0x09C1, 0x09C2, 0x09C3, 0x09C4, 0x09CD, 0x09E2,
0x09E3, 0x0A01, 0x0A02, 0x0A3C, 0x0A41, 0x0A42, 0x0A47, 0x0A48,
0x0A4B, 0x0A4C, 0x0A4D, 0x0A51, 0x0A70, 0x0A71, 0x0A75, 0x0A81,
0x0A82, 0x0ABC, 0x0AC1, 0x0AC2, 0x0AC3, 0x0AC4, 0x0AC5, 0x0AC7,
0x0AC8, 0x0ACD, 0x0AE2, 0x0AE3, 0x0B01, 0x0B3C, 0x0B3F, 0x0B41,
0x0B42, 0x0B43, 0x0B44, 0x0B4D, 0x0B56, 0x0B62, 0x0B63, 0x0B82,
0x0BC0, 0x0BCD, 0x0C00, 0x0C3E, 0x0C3F, 0x0C40, 0x0C46, 0x0C47,
0x0C48, 0x0C4A, 0x0C4B, 0x0C4C, 0x0C4D, 0x0C55, 0x0C56, 0x0C62,
0x0C63, 0x0C81, 0x0CBC, 0x0CBF, 0x0CC6, 0x0CCC, 0x0CCD, 0x0CE2,
0x0CE3, 0x0D01, 0x0D41, 0x0D42, 0x0D43, 0x0D44, 0x0D4D, 0x0D62,
0x0D63, 0x0DCA, 0x0DD2, 0x0DD3, 0x0DD4, 0x0DD6, 0x0E31, 0x0E34,
0x0E35, 0x0E36, 0x0E37, 0x0E38, 0x0E39, 0x0E3A, 0x0E47, 0x0E48,
0x0E49, 0x0E4A, 0x0E4B, 0x0E4C, 0x0E4D, 0x0E4E, 0x0EB1, 0x0EB4,
0x0EB5, 0x0EB6, 0x0EB7, 0x0EB8, 0x0EB9, 0x0EBB, 0x0EBC, 0x0EC8,
0x0EC9, 0x0ECA, 0x0ECB, 0x0ECC, 0x0ECD, 0x0F18, 0x0F19, 0x0F35,
0x0F37, 0x0F39, 0x0F71, 0x0F72, 0x0F73, 0x0F74, 0x0F75, 0x0F76,
0x0F77, 0x0F78, 0x0F79, 0x0F7A, 0x0F7B, 0x0F7C, 0x0F7D, 0x0F7E,
0x0F80, 0x0F81, 0x0F82, 0x0F83, 0x0F84, 0x0F86, 0x0F87, 0x0F8D,
0x0F8E, 0x0F8F, 0x0F90, 0x0F91, 0x0F92, 0x0F93, 0x0F94, 0x0F95,
0x0F96, 0x0F97, 0x0F99, 0x0F9A, 0x0F9B, 0x0F9C, 0x0F9D, 0x0F9E,
0x0F9F, 0x0FA0, 0x0FA1, 0x0FA2, 0x0FA3, 0x0FA4, 0x0FA5, 0x0FA6,
0x0FA7, 0x0FA8, 0x0FA9, 0x0FAA, 0x0FAB, 0x0FAC, 0x0FAD, 0x0FAE,
0x0FAF, 0x0FB0, 0x0FB1, 0x0FB2, 0x0FB3, 0x0FB4, 0x0FB5, 0x0FB6,
0x0FB7, 0x0FB8, 0x0FB9, 0x0FBA, 0x0FBB, 0x0FBC, 0x0FC6, 0x102D,
0x102E, 0x102F, 0x1030, 0x1032, 0x1033, 0x1034, 0x1035, 0x1036,
0x1037, 0x1039, 0x103A, 0x103D, 0x103E, 0x1058, 0x1059, 0x105E,
0x105F, 0x1060, 0x1071, 0x1072, 0x1073, 0x1074, 0x1082, 0x1085,
0x1086, 0x108D, 0x109D, 0x135D, 0x135E, 0x135F, 0x1712, 0x1713,
0x1714, 0x1732, 0x1733, 0x1734, 0x1752, 0x1753, 0x1772, 0x1773,
0x17B4, 0x17B5, 0x17B7, 0x17B8, 0x17B9, 0x17BA, 0x17BB, 0x17BC,
0x17BD, 0x17C6, 0x17C9, 0x17CA, 0x17CB, 0x17CC, 0x17CD, 0x17CE,
0x17CF, 0x17D0, 0x17D1, 0x17D2, 0x17D3, 0x17DD, 0x180B, 0x180C,
0x180D, 0x18A9, 0x1920, 0x1921, 0x1922, 0x1927, 0x1928, 0x1932,
0x1939, 0x193A, 0x193B, 0x1A17, 0x1A18, 0x1A1B, 0x1A56, 0x1A58,
0x1A59, 0x1A5A, 0x1A5B, 0x1A5C, 0x1A5D, 0x1A5E, 0x1A60, 0x1A62,
0x1A65, 0x1A66, 0x1A67, 0x1A68, 0x1A69, 0x1A6A, 0x1A6B, 0x1A6C,
0x1A73, 0x1A74, 0x1A75, 0x1A76, 0x1A77, 0x1A78, 0x1A79, 0x1A7A,
0x1A7B, 0x1A7C, 0x1A7F, 0x1AB0, 0x1AB1, 0x1AB2, 0x1AB3, 0x1AB4,
0x1AB5, 0x1AB6, 0x1AB7, 0x1AB8, 0x1AB9, 0x1ABA, 0x1ABB, 0x1ABC,
0x1ABD, 0x1B00, 0x1B01, 0x1B02, 0x1B03, 0x1B34, 0x1B36, 0x1B37,
0x1B38, 0x1B39, 0x1B3A, 0x1B3C, 0x1B42, 0x1B6B, 0x1B6C, 0x1B6D,
0x1B6E, 0x1B6F, 0x1B70, 0x1B71, 0x1B72, 0x1B73, 0x1B80, 0x1B81,
0x1BA2, 0x1BA3, 0x1BA4, 0x1BA5, 0x1BA8, 0x1BA9, 0x1BAB, 0x1BAC,
0x1BAD, 0x1BE6, 0x1BE8, 0x1BE9, 0x1BED, 0x1BEF, 0x1BF0, 0x1BF1,
0x1C2C, 0x1C2D, 0x1C2E, 0x1C2F, 0x1C30, 0x1C31, 0x1C32, 0x1C33,
0x1C36, 0x1C37, 0x1CD0, 0x1CD1, 0x1CD2, 0x1CD4, 0x1CD5, 0x1CD6,
0x1CD7, 0x1CD8, 0x1CD9, 0x1CDA, 0x1CDB, 0x1CDC, 0x1CDD, 0x1CDE,
0x1CDF, 0x1CE0, 0x1CE2, 0x1CE3, 0x1CE4, 0x1CE5, 0x1CE6, 0x1CE7,
0x1CE8, 0x1CED, 0x1CF4, 0x1CF8, 0x1CF9, 0x1DC0, 0x1DC1, 0x1DC2,
0x1DC3, 0x1DC4, 0x1DC5, 0x1DC6, 0x1DC7, 0x1DC8, 0x1DC9, 0x1DCA,
0x1DCB, 0x1DCC, 0x1DCD, 0x1DCE, 0x1DCF, 0x1DD0, 0x1DD1, 0x1DD2,
0x1DD3, 0x1DD4, 0x1DD5, 0x1DD6, 0x1DD7, 0x1DD8, 0x1DD9, 0x1DDA,
0x1DDB, 0x1DDC, 0x1DDD, 0x1DDE, 0x1DDF, 0x1DE0, 0x1DE1, 0x1DE2,
0x1DE3, 0x1DE4, 0x1DE5, 0x1DE6, 0x1DE7, 0x1DE8, 0x1DE9, 0x1DEA,
0x1DEB, 0x1DEC, 0x1DED, 0x1DEE, 0x1DEF, 0x1DF0, 0x1DF1, 0x1DF2,
0x1DF3, 0x1DF4, 0x1DF5, 0x1DFC, 0x1DFD, 0x1DFE, 0x1DFF, 0x20D0,
0x20D1, 0x20D2, 0x20D3, 0x20D4, 0x20D5, 0x20D6, 0x20D7, 0x20D8,
0x20D9, 0x20DA, 0x20DB, 0x20DC, 0x20E1, 0x20E5, 0x20E6, 0x20E7,
0x20E8, 0x20E9, 0x20EA, 0x20EB, 0x20EC, 0x20ED, 0x20EE, 0x20EF,
0x20F0, 0x2CEF, 0x2CF0, 0x2CF1, 0x2D7F, 0x2DE0, 0x2DE1, 0x2DE2,
0x2DE3, 0x2DE4, 0x2DE5, 0x2DE6, 0x2DE7, 0x2DE8, 0x2DE9, 0x2DEA,
0x2DEB, 0x2DEC, 0x2DED, 0x2DEE, 0x2DEF, 0x2DF0, 0x2DF1, 0x2DF2,
0x2DF3, 0x2DF4, 0x2DF5, 0x2DF6, 0x2DF7, 0x2DF8, 0x2DF9, 0x2DFA,
0x2DFB, 0x2DFC, 0x2DFD, 0x2DFE, 0x2DFF, 0x302A, 0x302B, 0x302C,
0x302D, 0x3099, 0x309A, 0xA66F, 0xA674, 0xA675, 0xA676, 0xA677,
0xA678, 0xA679, 0xA67A, 0xA67B, 0xA67C, 0xA67D, 0xA69E, 0xA69F,
0xA6F0, 0xA6F1, 0xA802, 0xA806, 0xA80B, 0xA825, 0xA826, 0xA8C4,
0xA8E0, 0xA8E1, 0xA8E2, 0xA8E3, 0xA8E4, 0xA8E5, 0xA8E6, 0xA8E7,
0xA8E8, 0xA8E9, 0xA8EA, 0xA8EB, 0xA8EC, 0xA8ED, 0xA8EE, 0xA8EF,
0xA8F0, 0xA8F1, 0xA926, 0xA927, 0xA928, 0xA929, 0xA92A, 0xA92B,
0xA92C, 0xA92D, 0xA947, 0xA948, 0xA949, 0xA94A, 0xA94B, 0xA94C,
0xA94D, 0xA94E, 0xA94F, 0xA950, 0xA951, 0xA980, 0xA981, 0xA982,
0xA9B3, 0xA9B6, 0xA9B7, 0xA9B8, 0xA9B9, 0xA9BC, 0xA9E5, 0xAA29,
0xAA2A, 0xAA2B, 0xAA2C, 0xAA2D, 0xAA2E, 0xAA31, 0xAA32, 0xAA35,
0xAA36, 0xAA43, 0xAA4C, 0xAA7C, 0xAAB0, 0xAAB2, 0xAAB3, 0xAAB4,
0xAAB7, 0xAAB8, 0xAABE, 0xAABF, 0xAAC1, 0xAAEC, 0xAAED, 0xAAF6,
0xABE5, 0xABE8, 0xABED, 0xFB1E, 0xFE00, 0xFE01, 0xFE02, 0xFE03,
0xFE04, 0xFE05, 0xFE06, 0xFE07, 0xFE08, 0xFE09, 0xFE0A, 0xFE0B,
0xFE0C, 0xFE0D, 0xFE0E, 0xFE0F, 0xFE20, 0xFE21, 0xFE22, 0xFE23,
0xFE24, 0xFE25, 0xFE26, 0xFE27, 0xFE28, 0xFE29, 0xFE2A, 0xFE2B,
0xFE2C, 0xFE2D, 0xFE2E, 0xFE2F, 0x101FD, 0x102E0, 0x10376, 0x10377,
0x10378, 0x10379, 0x1037A, 0x10A01, 0x10A02, 0x10A03, 0x10A05, 0x10A06,
0x10A0C, 0x10A0D, 0x10A0E, 0x10A0F, 0x10A38, 0x10A39, 0x10A3A, 0x10A3F,
0x10AE5, 0x10AE6, 0x11001, 0x11038, 0x11039, 0x1103A, 0x1103B, 0x1103C,
0x1103D, 0x1103E, 0x1103F, 0x11040, 0x11041, 0x11042, 0x11043, 0x11044,
0x11045, 0x11046, 0x1107F, 0x11080, 0x11081, 0x110B3, 0x110B4, 0x110B5,
0x110B6, 0x110B9, 0x110BA, 0x11100, 0x11101, 0x11102, 0x11127, 0x11128,
0x11129, 0x1112A, 0x1112B, 0x1112D, 0x1112E, 0x1112F, 0x11130, 0x11131,
0x11132, 0x11133, 0x11134, 0x11173, 0x11180, 0x11181, 0x111B6, 0x111B7,
0x111B8, 0x111B9, 0x111BA, 0x111BB, 0x111BC, 0x111BD, 0x111BE, 0x111CA,
0x111CB, 0x111CC, 0x1122F, 0x11230, 0x11231, 0x11234, 0x11236, 0x11237,
0x112DF, 0x112E3, 0x112E4, 0x112E5, 0x112E6, 0x112E7, 0x112E8, 0x112E9,
0x112EA, 0x11300, 0x11301, 0x1133C, 0x11340, 0x11366, 0x11367, 0x11368,
0x11369, 0x1136A, 0x1136B, 0x1136C, 0x11370, 0x11371, 0x11372, 0x11373,
0x11374, 0x114B3, 0x114B4, 0x114B5, 0x114B6, 0x114B7, 0x114B8, 0x114BA,
0x114BF, 0x114C0, 0x114C2, 0x114C3, 0x115B2, 0x115B3, 0x115B4, 0x115B5,
0x115BC, 0x115BD, 0x115BF, 0x115C0, 0x115DC, 0x115DD, 0x11633, 0x11634,
0x11635, 0x11636, 0x11637, 0x11638, 0x11639, 0x1163A, 0x1163D, 0x1163F,
0x11640, 0x116AB, 0x116AD, 0x116B0, 0x116B1, 0x116B2, 0x116B3, 0x116B4,
0x116B5, 0x116B7, 0x1171D, 0x1171E, 0x1171F, 0x11722, 0x11723, 0x11724,
0x11725, 0x11727, 0x11728, 0x11729, 0x1172A, 0x1172B, 0x16AF0, 0x16AF1,
0x16AF2, 0x16AF3, 0x16AF4, 0x16B30, 0x16B31, 0x16B32, 0x16B33, 0x16B34,
0x16B35, 0x16B36, 0x16F8F, 0x16F90, 0x16F91, 0x16F92, 0x1BC9D, 0x1BC9E,
0x1D167, 0x1D168, 0x1D169, 0x1D17B, 0x1D17C, 0x1D17D, 0x1D17E, 0x1D17F,
0x1D180, 0x1D181, 0x1D182, 0x1D185, 0x1D186, 0x1D187, 0x1D188, 0x1D189,
0x1D18A, 0x1D18B, 0x1D1AA, 0x1D1AB, 0x1D1AC, 0x1D1AD, 0x1D242, 0x1D243,
0x1D244, 0x1DA00, 0x1DA01, 0x1DA02, 0x1DA03, 0x1DA04, 0x1DA05, 0x1DA06,
0x1DA07, 0x1DA08, 0x1DA09, 0x1DA0A, 0x1DA0B, 0x1DA0C, 0x1DA0D, 0x1DA0E,
0x1DA0F, 0x1DA10, 0x1DA11, 0x1DA12, 0x1DA13, 0x1DA14, 0x1DA15, 0x1DA16,
0x1DA17, 0x1DA18, 0x1DA19, 0x1DA1A, 0x1DA1B, 0x1DA1C, 0x1DA1D, 0x1DA1E,
0x1DA1F, 0x1DA20, 0x1DA21, 0x1DA22, 0x1DA23, 0x1DA24, 0x1DA25, 0x1DA26,
0x1DA27, 0x1DA28, 0x1DA29, 0x1DA2A, 0x1DA2B, 0x1DA2C, 0x1DA2D, 0x1DA2E,
0x1DA2F, 0x1DA30, 0x1DA31, 0x1DA32, 0x1DA33, 0x1DA34, 0x1DA35, 0x1DA36,
0x1DA3B, 0x1DA3C, 0x1DA3D, 0x1DA3E, 0x1DA3F, 0x1DA40, 0x1DA41, 0x1DA42,
0x1DA43, 0x1DA44, 0x1DA45, 0x1DA46, 0x1DA47, 0x1DA48, 0x1DA49, 0x1DA4A,
0x1DA4B, 0x1DA4C, 0x1DA4D, 0x1DA4E, 0x1DA4F, 0x1DA50, 0x1DA51, 0x1DA52,
0x1DA53, 0x1DA54, 0x1DA55, 0x1DA56, 0x1DA57, 0x1DA58, 0x1DA59, 0x1DA5A,
0x1DA5B, 0x1DA5C, 0x1DA5D, 0x1DA5E, 0x1DA5F, 0x1DA60, 0x1DA61, 0x1DA62,
0x1DA63, 0x1DA64, 0x1DA65, 0x1DA66, 0x1DA67, 0x1DA68, 0x1DA69, 0x1DA6A,
0x1DA6B, 0x1DA6C, 0x1DA75, 0x1DA84, 0x1DA9B, 0x1DA9C, 0x1DA9D, 0x1DA9E,
0x1DA9F, 0x1DAA1, 0x1DAA2, 0x1DAA3, 0x1DAA4, 0x1DAA5, 0x1DAA6, 0x1DAA7,
0x1DAA8, 0x1DAA9, 0x1DAAA, 0x1DAAB, 0x1DAAC, 0x1DAAD, 0x1DAAE, 0x1DAAF,
0x1E8D0, 0x1E8D1, 0x1E8D2, 0x1E8D3, 0x1E8D4, 0x1E8D5, 0x1E8D6, 0xE0100,
0xE0101, 0xE0102, 0xE0103, 0xE0104, 0xE0105, 0xE0106, 0xE0107, 0xE0108,
0xE0109, 0xE010A, 0xE010B, 0xE010C, 0xE010D, 0xE010E, 0xE010F, 0xE0110,
0xE0111, 0xE0112, 0xE0113, 0xE0114, 0xE0115, 0xE0116, 0xE0117, 0xE0118,
0xE0119, 0xE011A, 0xE011B, 0xE011C, 0xE011D, 0xE011E, 0xE011F, 0xE0120,
0xE0121, 0xE0122, 0xE0123, 0xE0124, 0xE0125, 0xE0126, 0xE0127, 0xE0128,
0xE0129, 0xE012A, 0xE012B, 0xE012C, 0xE012D, 0xE012E, 0xE012F, 0xE0130,
0xE0131, 0xE0132, 0xE0133, 0xE0134, 0xE0135, 0xE0136, 0xE0137, 0xE0138,
0xE0139, 0xE013A, 0xE013B, 0xE013C, 0xE013D, 0xE013E, 0xE013F, 0xE0140,
0xE0141, 0xE0142, 0xE0143, 0xE0144, 0xE0145, 0xE0146, 0xE0147, 0xE0148,
0xE0149, 0xE014A, 0xE014B, 0xE014C, 0xE014D, 0xE014E, 0xE014F, 0xE0150,
0xE0151, 0xE0152, 0xE0153, 0xE0154, 0xE0155, 0xE0156, 0xE0157, 0xE0158,
0xE0159, 0xE015A, 0xE015B, 0xE015C, 0xE015D, 0xE015E, 0xE015F, 0xE0160,
0xE0161, 0xE0162, 0xE0163, 0xE0164, 0xE0165, 0xE0166, 0xE0167, 0xE0168,
0xE0169, 0xE016A, 0xE016B, 0xE016C, 0xE016D, 0xE016E, 0xE016F, 0xE0170,
0xE0171, 0xE0172, 0xE0173, 0xE0174, 0xE0175, 0xE0176, 0xE0177, 0xE0178,
0xE0179, 0xE017A, 0xE017B, 0xE017C, 0xE017D, 0xE017E, 0xE017F, 0xE0180,
0xE0181, 0xE0182, 0xE0183, 0xE0184, 0xE0185, 0xE0186, 0xE0187, 0xE0188,
0xE0189, 0xE018A, 0xE018B, 0xE018C, 0xE018D, 0xE018E, 0xE018F, 0xE0190,
0xE0191, 0xE0192, 0xE0193, 0xE0194, 0xE0195, 0xE0196, 0xE0197, 0xE0198,
0xE0199, 0xE019A, 0xE019B, 0xE019C, 0xE019D, 0xE019E, 0xE019F, 0xE01A0,
0xE01A1, 0xE01A2, 0xE01A3, 0xE01A4, 0xE01A5, 0xE01A6, 0xE01A7, 0xE01A8,
0xE01A9, 0xE01AA, 0xE01AB, 0xE01AC, 0xE01AD, 0xE01AE, 0xE01AF, 0xE01B0,
0xE01B1, 0xE01B2, 0xE01B3, 0xE01B4, 0xE01B5, 0xE01B6, 0xE01B7, 0xE01B8,
0xE01B9, 0xE01BA, 0xE01BB, 0xE01BC, 0xE01BD, 0xE01BE, 0xE01BF, 0xE01C0,
0xE01C1, 0xE01C2, 0xE01C3, 0xE01C4, 0xE01C5, 0xE01C6, 0xE01C7, 0xE01C8,
0xE01C9, 0xE01CA, 0xE01CB, 0xE01CC, 0xE01CD, 0xE01CE, 0xE01CF, 0xE01D0,
0xE01D1, 0xE01D2, 0xE01D3, 0xE01D4, 0xE01D5, 0xE01D6, 0xE01D7, 0xE01D8,
0xE01D9, 0xE01DA, 0xE01DB, 0xE01DC, 0xE01DD, 0xE01DE, 0xE01DF, 0xE01E0,
0xE01E1, 0xE01E2, 0xE01E3, 0xE01E4, 0xE01E5, 0xE01E6, 0xE01E7, 0xE01E8,
0xE01E9, 0xE01EA, 0xE01EB, 0xE01EC, 0xE01ED, 0xE01EE, 0xE01EF,
};
static int unicodeCombiningCharTableSize =
sizeof(unicodeCombiningCharTable) / sizeof(unicodeCombiningCharTable[0]);
inline int unicodeIsCombiningChar(unsigned long cp) {
int i;
for (i = 0; i < unicodeCombiningCharTableSize; i++) {
if (unicodeCombiningCharTable[i] == cp) {
return 1;
}
}
return 0;
}
/* Get length of previous UTF8 character
*/
inline int unicodePrevUTF8CharLen(char *buf, int pos) {
int end = pos--;
while (pos >= 0 && ((unsigned char)buf[pos] & 0xC0) == 0x80) {
pos--;
}
return end - pos;
}
/* Get length of previous UTF8 character
*/
inline int unicodeUTF8CharLen(char *buf, int buf_len, int pos) {
if (pos == buf_len) {
return 0;
}
unsigned char ch = buf[pos];
if (ch < 0x80) {
return 1;
} else if (ch < 0xE0) {
return 2;
} else if (ch < 0xF0) {
return 3;
} else {
return 4;
}
}
/* Convert UTF8 to Unicode code point
*/
inline int unicodeUTF8CharToCodePoint(const char *buf, int len, int *cp) {
if (len) {
unsigned char byte = buf[0];
if ((byte & 0x80) == 0) {
*cp = byte;
return 1;
} else if ((byte & 0xE0) == 0xC0) {
if (len >= 2) {
*cp = (((unsigned long)(buf[0] & 0x1F)) << 6) |
((unsigned long)(buf[1] & 0x3F));
return 2;
}
} else if ((byte & 0xF0) == 0xE0) {
if (len >= 3) {
*cp = (((unsigned long)(buf[0] & 0x0F)) << 12) |
(((unsigned long)(buf[1] & 0x3F)) << 6) |
((unsigned long)(buf[2] & 0x3F));
return 3;
}
} else if ((byte & 0xF8) == 0xF0) {
if (len >= 4) {
*cp = (((unsigned long)(buf[0] & 0x07)) << 18) |
(((unsigned long)(buf[1] & 0x3F)) << 12) |
(((unsigned long)(buf[2] & 0x3F)) << 6) |
((unsigned long)(buf[3] & 0x3F));
return 4;
}
}
}
return 0;
}
/* Get length of grapheme
*/
inline int unicodeGraphemeLen(char *buf, int buf_len, int pos) {
if (pos == buf_len) {
return 0;
}
int beg = pos;
pos += unicodeUTF8CharLen(buf, buf_len, pos);
while (pos < buf_len) {
int len = unicodeUTF8CharLen(buf, buf_len, pos);
int cp = 0;
unicodeUTF8CharToCodePoint(buf + pos, len, &cp);
if (!unicodeIsCombiningChar(cp)) {
return pos - beg;
}
pos += len;
}
return pos - beg;
}
/* Get length of previous grapheme
*/
inline int unicodePrevGraphemeLen(char *buf, int pos) {
if (pos == 0) {
return 0;
}
int end = pos;
while (pos > 0) {
int len = unicodePrevUTF8CharLen(buf, pos);
pos -= len;
int cp = 0;
unicodeUTF8CharToCodePoint(buf + pos, len, &cp);
if (!unicodeIsCombiningChar(cp)) {
return end - pos;
}
}
return 0;
}
inline int isAnsiEscape(const char *buf, int buf_len, int *len) {
if (buf_len > 2 && !memcmp("\033[", buf, 2)) {
int off = 2;
while (off < buf_len) {
switch (buf[off++]) {
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'J':
case 'K':
case 'S':
case 'T':
case 'f':
case 'm':
*len = off;
return 1;
}
}
}
return 0;
}
/* Get column position for the single line mode.
*/
inline int unicodeColumnPos(const char *buf, int buf_len) {
int ret = 0;
int off = 0;
while (off < buf_len) {
int len;
if (isAnsiEscape(buf + off, buf_len - off, &len)) {
off += len;
continue;
}
int cp = 0;
len = unicodeUTF8CharToCodePoint(buf + off, buf_len - off, &cp);
if (!unicodeIsCombiningChar(cp)) {
ret += unicodeIsWideChar(cp) ? 2 : 1;
}
off += len;
}
return ret;
}
/* Get column position for the multi line mode.
*/
inline int unicodeColumnPosForMultiLine(char *buf, int buf_len, int pos,
int cols, int ini_pos) {
int ret = 0;
int colwid = ini_pos;
int off = 0;
while (off < buf_len) {
int cp = 0;
int len = unicodeUTF8CharToCodePoint(buf + off, buf_len - off, &cp);
int wid = 0;
if (!unicodeIsCombiningChar(cp)) {
wid = unicodeIsWideChar(cp) ? 2 : 1;
}
int dif = (int)(colwid + wid) - (int)cols;
if (dif > 0) {
ret += dif;
colwid = wid;
} else if (dif == 0) {
colwid = 0;
} else {
colwid += wid;
}
if (off >= pos) {
break;
}
off += len;
ret += wid;
}
return ret;
}
/* Read UTF8 character from file.
*/
inline int unicodeReadUTF8Char(int fd, char *buf, int *cp) {
int nread = read(fd, &buf[0], 1);
if (nread <= 0) {
return nread;
}
unsigned char byte = buf[0];
if ((byte & 0x80) == 0) {
;
} else if ((byte & 0xE0) == 0xC0) {
nread = read(fd, &buf[1], 1);
if (nread <= 0) {
return nread;
}
} else if ((byte & 0xF0) == 0xE0) {
nread = read(fd, &buf[1], 2);
if (nread <= 0) {
return nread;
}
} else if ((byte & 0xF8) == 0xF0) {
nread = read(fd, &buf[1], 3);
if (nread <= 0) {
return nread;
}
} else {
return -1;
}
return unicodeUTF8CharToCodePoint(buf, 4, cp);
}
/* ======================= Low level terminal handling ====================== */
/* Set if to use or not the multi line mode. */
inline void SetMultiLine(bool ml) { mlmode = ml; }
/* Return true if the terminal name is in the list of terminals we know are
* not able to understand basic escape sequences. */
inline bool isUnsupportedTerm(void) {
#ifndef _WIN32
char *term = getenv("TERM");
int j;
if (term == NULL)
return false;
for (j = 0; unsupported_term[j]; j++)
if (!strcasecmp(term, unsupported_term[j]))
return true;
#endif
return false;
}
/* Raw mode: 1960 magic shit. */
inline bool enableRawMode(int fd) {
#ifndef _WIN32
struct termios raw;
if (!isatty(STDIN_FILENO))
goto fatal;
if (!atexit_registered) {
atexit(linenoiseAtExit);
atexit_registered = true;
}
if (tcgetattr(fd, &orig_termios) == -1)
goto fatal;
raw = orig_termios; /* modify the original mode */
/* input modes: no break, no CR to NL, no parity check, no strip char,
* no start/stop output control. */
raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
/* output modes - disable post processing */
// NOTE: Multithreaded issue #20
// (https://github.com/yhirose/cpp-linenoise/issues/20) raw.c_oflag &=
// ~(OPOST);
/* control modes - set 8 bit chars */
raw.c_cflag |= (CS8);
/* local modes - echoing off, canonical off, no extended functions,
* no signal chars (^Z,^C) */
raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
/* control chars - set return condition: min number of bytes and timer.
* We want read to return every single byte, without timeout. */
raw.c_cc[VMIN] = 1;
raw.c_cc[VTIME] = 0; /* 1 byte, no timer */
/* put terminal in raw mode after flushing */
if (tcsetattr(fd, TCSAFLUSH, &raw) < 0)
goto fatal;
rawmode = true;
#else
if (!atexit_registered) {
/* Cleanup them at exit */
atexit(linenoiseAtExit);
atexit_registered = true;
/* Init windows console handles only once */
hOut = GetStdHandle(STD_OUTPUT_HANDLE);
if (hOut == INVALID_HANDLE_VALUE)
goto fatal;
}
DWORD consolemodeOut;
if (!GetConsoleMode(hOut, &consolemodeOut)) {
CloseHandle(hOut);
errno = ENOTTY;
return false;
};
hIn = GetStdHandle(STD_INPUT_HANDLE);
if (hIn == INVALID_HANDLE_VALUE) {
CloseHandle(hOut);
errno = ENOTTY;
return false;
}
GetConsoleMode(hIn, &consolemodeIn);
/* Enable raw mode */
SetConsoleMode(hIn, consolemodeIn & ~ENABLE_PROCESSED_INPUT);
rawmode = true;
#endif
return true;
fatal:
errno = ENOTTY;
return false;
}
inline void disableRawMode(int fd) {
#ifdef _WIN32
if (consolemodeIn) {
SetConsoleMode(hIn, consolemodeIn);
consolemodeIn = 0;
}
rawmode = false;
#else
/* Don't even check the return value as it's too late. */
if (rawmode && tcsetattr(fd, TCSAFLUSH, &orig_termios) != -1)
rawmode = false;
#endif
}
/* Use the ESC [6n escape sequence to query the horizontal cursor position
* and return it. On error -1 is returned, on success the position of the
* cursor. */
inline int getCursorPosition(int ifd, int ofd) {
char buf[32];
int cols, rows;
unsigned int i = 0;
/* Report cursor location */
if (write(ofd, "\x1b[6n", 4) != 4)
return -1;
/* Read the response: ESC [ rows ; cols R */
while (i < sizeof(buf) - 1) {
if (read(ifd, buf + i, 1) != 1)
break;
if (buf[i] == 'R')
break;
i++;
}
buf[i] = '\0';
/* Parse it. */
if (buf[0] != ESC || buf[1] != '[')
return -1;
if (sscanf(buf + 2, "%d;%d", &rows, &cols) != 2)
return -1;
return cols;
}
/* Try to get the number of columns in the current terminal, or assume 80
* if it fails. */
inline int getColumns(int ifd, int ofd) {
#ifdef _WIN32
CONSOLE_SCREEN_BUFFER_INFO b;
if (!GetConsoleScreenBufferInfo(hOut, &b))
return 80;
return b.srWindow.Right - b.srWindow.Left;
#else
struct winsize ws;
if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
/* ioctl() failed. Try to query the terminal itself. */
int start, cols;
/* Get the initial position so we can restore it later. */
start = getCursorPosition(ifd, ofd);
if (start == -1)
goto failed;
/* Go to right margin and get position. */
if (write(ofd, "\x1b[999C", 6) != 6)
goto failed;
cols = getCursorPosition(ifd, ofd);
if (cols == -1)
goto failed;
/* Restore position. */
if (cols > start) {
char seq[32];
snprintf(seq, 32, "\x1b[%dD", cols - start);
if (write(ofd, seq, strlen(seq)) == -1) {
/* Can't recover... */
}
}
return cols;
} else {
return ws.ws_col;
}
failed:
return 80;
#endif
}
/* Clear the screen. Used to handle ctrl+l */
inline void linenoiseClearScreen(void) {
if (write(STDOUT_FILENO, "\x1b[H\x1b[2J", 7) <= 0) {
/* nothing to do, just to avoid warning. */
}
}
/* Beep, used for completion when there is nothing to complete or when all
* the choices were already shown. */
inline void linenoiseBeep(void) {
fprintf(stderr, "\x7");
fflush(stderr);
}
/* ============================== Completion ================================ */
/* This is an helper function for linenoiseEdit() and is called when the
* user types the <tab> key in order to complete the string currently in the
* input.
*
* The state of the editing is encapsulated into the pointed linenoiseState
* structure as described in the structure definition. */
inline int completeLine(struct linenoiseState *ls, char *cbuf, int *c) {
std::vector<std::string> lc;
int nread = 0, nwritten;
*c = 0;
completionCallback(ls->buf, lc);
if (lc.empty()) {
linenoiseBeep();
} else {
int stop = 0, i = 0;
while (!stop) {
/* Show completion or original buffer */
if (i < static_cast<int>(lc.size())) {
struct linenoiseState saved = *ls;
ls->len = ls->pos = static_cast<int>(lc[i].size());
ls->buf = &lc[i][0];
refreshLine(ls);
ls->len = saved.len;
ls->pos = saved.pos;
ls->buf = saved.buf;
} else {
refreshLine(ls);
}
// nread = read(ls->ifd,&c,1);
#ifdef _WIN32
nread = win32read(c);
if (nread == 1) {
cbuf[0] = *c;
}
#else
nread = unicodeReadUTF8Char(ls->ifd, cbuf, c);
#endif
if (nread <= 0) {
*c = -1;
return nread;
}
switch (*c) {
case 9: /* tab */
i = (i + 1) % (lc.size() + 1);
if (i == static_cast<int>(lc.size()))
linenoiseBeep();
break;
case 27: /* escape */
/* Re-show original buffer */
if (i < static_cast<int>(lc.size()))
refreshLine(ls);
stop = 1;
break;
default:
/* Update buffer and return */
if (i < static_cast<int>(lc.size())) {
nwritten = snprintf(ls->buf, ls->buflen, "%s", &lc[i][0]);
ls->len = ls->pos = nwritten;
}
stop = 1;
break;
}
}
}
return nread;
}
/* Register a callback function to be called for tab-completion. */
inline void SetCompletionCallback(CompletionCallback fn) {
completionCallback = fn;
}
/* =========================== Line editing ================================= */
/* Single line low level line refresh.
*
* Rewrite the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal. */
inline void refreshSingleLine(struct linenoiseState *l) {
char seq[64];
int pcolwid =
unicodeColumnPos(l->prompt.c_str(), static_cast<int>(l->prompt.length()));
int fd = l->ofd;
char *buf = l->buf;
int len = l->len;
int pos = l->pos;
std::string ab;
while ((pcolwid + unicodeColumnPos(buf, pos)) >= l->cols) {
int glen = unicodeGraphemeLen(buf, len, 0);
buf += glen;
len -= glen;
pos -= glen;
}
while (pcolwid + unicodeColumnPos(buf, len) > l->cols) {
len -= unicodePrevGraphemeLen(buf, len);
}
/* Cursor to left edge */
snprintf(seq, 64, "\r");
ab += seq;
/* Write the prompt and the current buffer content */
ab += l->prompt;
ab.append(buf, len);
/* Erase to right */
snprintf(seq, 64, "\x1b[0K");
ab += seq;
/* Move cursor to original position. */
snprintf(seq, 64, "\r\x1b[%dC", (int)(unicodeColumnPos(buf, pos) + pcolwid));
ab += seq;
if (write(fd, ab.c_str(), static_cast<int>(ab.length())) == -1) {
} /* Can't recover from write error. */
}
/* Multi line low level line refresh.
*
* Rewrite the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal. */
inline void refreshMultiLine(struct linenoiseState *l) {
char seq[64];
int pcolwid =
unicodeColumnPos(l->prompt.c_str(), static_cast<int>(l->prompt.length()));
int colpos =
unicodeColumnPosForMultiLine(l->buf, l->len, l->len, l->cols, pcolwid);
int colpos2; /* cursor column position. */
int rows = (pcolwid + colpos + l->cols - 1) /
l->cols; /* rows used by current buf. */
int rpos =
(pcolwid + l->oldcolpos + l->cols) / l->cols; /* cursor relative row. */
int rpos2; /* rpos after refresh. */
int col; /* colum position, zero-based. */
int old_rows = (int)l->maxrows;
int fd = l->ofd, j;
std::string ab;
/* Update maxrows if needed. */
if (rows > (int)l->maxrows)
l->maxrows = rows;
/* First step: clear all the lines used before. To do so start by
* going to the last row. */
if (old_rows - rpos > 0) {
snprintf(seq, 64, "\x1b[%dB", old_rows - rpos);
ab += seq;
}
/* Now for every row clear it, go up. */
for (j = 0; j < old_rows - 1; j++) {
snprintf(seq, 64, "\r\x1b[0K\x1b[1A");
ab += seq;
}
/* Clean the top line. */
snprintf(seq, 64, "\r\x1b[0K");
ab += seq;
/* Write the prompt and the current buffer content */
ab += l->prompt;
ab.append(l->buf, l->len);
/* Get text width to cursor position */
colpos2 =
unicodeColumnPosForMultiLine(l->buf, l->len, l->pos, l->cols, pcolwid);
/* If we are at the very end of the screen with our prompt, we need to
* emit a newline and move the prompt to the first column. */
if (l->pos && l->pos == l->len && (colpos2 + pcolwid) % l->cols == 0) {
ab += "\n";
snprintf(seq, 64, "\r");
ab += seq;
rows++;
if (rows > (int)l->maxrows)
l->maxrows = rows;
}
/* Move cursor to right position. */
rpos2 = (pcolwid + colpos2 + l->cols) /
l->cols; /* current cursor relative row. */
/* Go up till we reach the expected positon. */
if (rows - rpos2 > 0) {
snprintf(seq, 64, "\x1b[%dA", rows - rpos2);
ab += seq;
}
/* Set column. */
col = (pcolwid + colpos2) % l->cols;
if (col)
snprintf(seq, 64, "\r\x1b[%dC", col);
else
snprintf(seq, 64, "\r");
ab += seq;
l->oldcolpos = colpos2;
if (write(fd, ab.c_str(), static_cast<int>(ab.length())) == -1) {
} /* Can't recover from write error. */
}
/* Calls the two low level functions refreshSingleLine() or
* refreshMultiLine() according to the selected mode. */
inline void refreshLine(struct linenoiseState *l) {
if (mlmode)
refreshMultiLine(l);
else
refreshSingleLine(l);
}
/* Insert the character 'c' at cursor current position.
*
* On error writing to the terminal -1 is returned, otherwise 0. */
inline int linenoiseEditInsert(struct linenoiseState *l, const char *cbuf,
int clen) {
if (l->len < l->buflen) {
if (l->len == l->pos) {
memcpy(&l->buf[l->pos], cbuf, clen);
l->pos += clen;
l->len += clen;
;
l->buf[l->len] = '\0';
if ((!mlmode && unicodeColumnPos(l->prompt.c_str(),
static_cast<int>(l->prompt.length())) +
unicodeColumnPos(l->buf, l->len) <
l->cols) /* || mlmode */) {
/* Avoid a full update of the line in the
* trivial case. */
if (write(l->ofd, cbuf, clen) == -1)
return -1;
} else {
refreshLine(l);
}
} else {
memmove(l->buf + l->pos + clen, l->buf + l->pos, l->len - l->pos);
memcpy(&l->buf[l->pos], cbuf, clen);
l->pos += clen;
l->len += clen;
l->buf[l->len] = '\0';
refreshLine(l);
}
}
return 0;
}
/* Move cursor on the left. */
inline void linenoiseEditMoveLeft(struct linenoiseState *l) {
if (l->pos > 0) {
l->pos -= unicodePrevGraphemeLen(l->buf, l->pos);
refreshLine(l);
}
}
/* Move cursor on the right. */
inline void linenoiseEditMoveRight(struct linenoiseState *l) {
if (l->pos != l->len) {
l->pos += unicodeGraphemeLen(l->buf, l->len, l->pos);
refreshLine(l);
}
}
/* Move cursor to the start of the line. */
inline void linenoiseEditMoveHome(struct linenoiseState *l) {
if (l->pos != 0) {
l->pos = 0;
refreshLine(l);
}
}
/* Move cursor to the end of the line. */
inline void linenoiseEditMoveEnd(struct linenoiseState *l) {
if (l->pos != l->len) {
l->pos = l->len;
refreshLine(l);
}
}
/* Substitute the currently edited line with the next or previous history
* entry as specified by 'dir'. */
#define LINENOISE_HISTORY_NEXT 0
#define LINENOISE_HISTORY_PREV 1
inline void linenoiseEditHistoryNext(struct linenoiseState *l, int dir) {
if (history.size() > 1) {
/* Update the current history entry before to
* overwrite it with the next one. */
history[history.size() - 1 - l->history_index] = l->buf;
/* Show the new entry */
l->history_index += (dir == LINENOISE_HISTORY_PREV) ? 1 : -1;
if (l->history_index < 0) {
l->history_index = 0;
return;
} else if (l->history_index >= (int)history.size()) {
l->history_index = static_cast<int>(history.size()) - 1;
return;
}
memset(l->buf, 0, l->buflen);
strcpy(l->buf, history[history.size() - 1 - l->history_index].c_str());
l->len = l->pos = static_cast<int>(strlen(l->buf));
refreshLine(l);
}
}
/* Delete the character at the right of the cursor without altering the cursor
* position. Basically this is what happens with the "Delete" keyboard key. */
inline void linenoiseEditDelete(struct linenoiseState *l) {
if (l->len > 0 && l->pos < l->len) {
int glen = unicodeGraphemeLen(l->buf, l->len, l->pos);
memmove(l->buf + l->pos, l->buf + l->pos + glen, l->len - l->pos - glen);
l->len -= glen;
l->buf[l->len] = '\0';
refreshLine(l);
}
}
/* Backspace implementation. */
inline void linenoiseEditBackspace(struct linenoiseState *l) {
if (l->pos > 0 && l->len > 0) {
int glen = unicodePrevGraphemeLen(l->buf, l->pos);
memmove(l->buf + l->pos - glen, l->buf + l->pos, l->len - l->pos);
l->pos -= glen;
l->len -= glen;
l->buf[l->len] = '\0';
refreshLine(l);
}
}
/* Delete the previosu word, maintaining the cursor at the start of the
* current word. */
inline void linenoiseEditDeletePrevWord(struct linenoiseState *l) {
int old_pos = l->pos;
int diff;
while (l->pos > 0 && l->buf[l->pos - 1] == ' ')
l->pos--;
while (l->pos > 0 && l->buf[l->pos - 1] != ' ')
l->pos--;
diff = old_pos - l->pos;
memmove(l->buf + l->pos, l->buf + old_pos, l->len - old_pos + 1);
l->len -= diff;
refreshLine(l);
}
/* This function is the core of the line editing capability of linenoise.
* It expects 'fd' to be already in "raw mode" so that every key pressed
* will be returned ASAP to read().
*
* The resulting string is put into 'buf' when the user type enter, or
* when ctrl+d is typed.
*
* The function returns the length of the current buffer. */
inline int linenoiseEdit(int stdin_fd, int stdout_fd, char *buf, int buflen,
const char *prompt) {
struct linenoiseState l;
/* Populate the linenoise state that we pass to functions implementing
* specific editing functionalities. */
l.ifd = stdin_fd;
l.ofd = stdout_fd;
l.buf = buf;
l.buflen = buflen;
l.prompt = prompt;
l.oldcolpos = l.pos = 0;
l.len = 0;
l.cols = getColumns(stdin_fd, stdout_fd);
l.maxrows = 0;
l.history_index = 0;
/* Buffer starts empty. */
l.buf[0] = '\0';
l.buflen--; /* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
AddHistory("");
if (write(l.ofd, prompt, static_cast<int>(l.prompt.length())) == -1)
return -1;
while (1) {
int c;
char cbuf[4];
int nread;
char seq[3];
#ifdef _WIN32
nread = win32read(&c);
if (nread == 1) {
cbuf[0] = c;
}
#else
nread = unicodeReadUTF8Char(l.ifd, cbuf, &c);
#endif
if (nread <= 0)
return (int)l.len;
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error reading from fd. Otherwise it will return the
* character that should be handled next. */
if (c == 9 && completionCallback != NULL) {
nread = completeLine(&l, cbuf, &c);
/* Return on errors */
if (c < 0)
return l.len;
/* Read next character when 0 */
if (c == 0)
continue;
}
switch (c) {
case ENTER: /* enter */
if (!history.empty())
history.pop_back();
if (mlmode)
linenoiseEditMoveEnd(&l);
return (int)l.len;
case CTRL_C: /* ctrl-c */
errno = EAGAIN;
return -1;
case BACKSPACE: /* backspace */
case 8: /* ctrl-h */
linenoiseEditBackspace(&l);
break;
case CTRL_D: /* ctrl-d, remove char at right of cursor, or if the
line is empty, act as end-of-file. */
if (l.len > 0) {
linenoiseEditDelete(&l);
} else {
history.pop_back();
return -1;
}
break;
case CTRL_T: /* ctrl-t, swaps current character with previous. */
if (l.pos > 0 && l.pos < l.len) {
char aux = buf[l.pos - 1];
buf[l.pos - 1] = buf[l.pos];
buf[l.pos] = aux;
if (l.pos != l.len - 1)
l.pos++;
refreshLine(&l);
}
break;
case CTRL_B: /* ctrl-b */
linenoiseEditMoveLeft(&l);
break;
case CTRL_F: /* ctrl-f */
linenoiseEditMoveRight(&l);
break;
case CTRL_P: /* ctrl-p */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case CTRL_N: /* ctrl-n */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case ESC: /* escape sequence */
/* Read the next two bytes representing the escape sequence.
* Use two calls to handle slow terminals returning the two
* chars at different times. */
if (read(l.ifd, seq, 1) == -1)
break;
if (read(l.ifd, seq + 1, 1) == -1)
break;
/* ESC [ sequences. */
if (seq[0] == '[') {
if (seq[1] >= '0' && seq[1] <= '9') {
/* Extended escape, read additional byte. */
if (read(l.ifd, seq + 2, 1) == -1)
break;
if (seq[2] == '~') {
switch (seq[1]) {
case '3': /* Delete key. */
linenoiseEditDelete(&l);
break;
}
}
} else {
switch (seq[1]) {
case 'A': /* Up */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case 'B': /* Down */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case 'C': /* Right */
linenoiseEditMoveRight(&l);
break;
case 'D': /* Left */
linenoiseEditMoveLeft(&l);
break;
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
}
/* ESC O sequences. */
else if (seq[0] == 'O') {
switch (seq[1]) {
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
break;
default:
if (linenoiseEditInsert(&l, cbuf, nread))
return -1;
break;
case CTRL_U: /* Ctrl+u, delete the whole line. */
buf[0] = '\0';
l.pos = l.len = 0;
refreshLine(&l);
break;
case CTRL_K: /* Ctrl+k, delete from current to end of line. */
buf[l.pos] = '\0';
l.len = l.pos;
refreshLine(&l);
break;
case CTRL_A: /* Ctrl+a, go to the start of the line */
linenoiseEditMoveHome(&l);
break;
case CTRL_E: /* ctrl+e, go to the end of the line */
linenoiseEditMoveEnd(&l);
break;
case CTRL_L: /* ctrl+l, clear screen */
linenoiseClearScreen();
refreshLine(&l);
break;
case CTRL_W: /* ctrl+w, delete previous word */
linenoiseEditDeletePrevWord(&l);
break;
}
}
return l.len;
}
/* This function calls the line editing function linenoiseEdit() using
* the STDIN file descriptor set in raw mode. */
inline bool linenoiseRaw(const char *prompt, std::string &line) {
bool quit = false;
if (!isatty(STDIN_FILENO)) {
/* Not a tty: read from file / pipe. */
std::getline(std::cin, line);
} else {
/* Interactive editing. */
if (enableRawMode(STDIN_FILENO) == false) {
return quit;
}
char buf[LINENOISE_MAX_LINE];
auto count = linenoiseEdit(STDIN_FILENO, STDOUT_FILENO, buf,
LINENOISE_MAX_LINE, prompt);
if (count == -1) {
quit = true;
} else {
line.assign(buf, count);
}
disableRawMode(STDIN_FILENO);
printf("\n");
}
return quit;
}
/* The high level function that is the main API of the linenoise library.
* This function checks if the terminal has basic capabilities, just checking
* for a blacklist of stupid terminals, and later either calls the line
* editing function or uses dummy fgets() so that you will be able to type
* something even in the most desperate of the conditions. */
inline bool Readline(const char *prompt, std::string &line) {
if (isUnsupportedTerm()) {
printf("%s", prompt);
fflush(stdout);
std::getline(std::cin, line);
return false;
} else {
return linenoiseRaw(prompt, line);
}
}
inline std::string Readline(const char *prompt, bool &quit) {
std::string line;
quit = Readline(prompt, line);
return line;
}
inline std::string Readline(const char *prompt) {
bool quit; // dummy
return Readline(prompt, quit);
}
/* ================================ History ================================= */
/* At exit we'll try to fix the terminal to the initial conditions. */
inline void linenoiseAtExit(void) { disableRawMode(STDIN_FILENO); }
/* This is the API call to add a new entry in the linenoise history.
* It uses a fixed array of char pointers that are shifted (memmoved)
* when the history max length is reached in order to remove the older
* entry and make room for the new one, so it is not exactly suitable for huge
* histories, but will work well for a few hundred of entries.
*
* Using a circular buffer is smarter, but a bit more complex to handle. */
inline bool AddHistory(const char *line) {
if (history_max_len == 0)
return false;
/* Don't add duplicated lines. */
if (!history.empty() && history.back() == line)
return false;
/* If we reached the max length, remove the older line. */
if (history.size() == history_max_len) {
history.erase(history.begin());
}
history.push_back(line);
return true;
}
/* Set the maximum length for the history. This function can be called even
* if there is already some history, the function will make sure to retain
* just the latest 'len' elements if the new history length value is smaller
* than the amount of items already inside the history. */
inline bool SetHistoryMaxLen(size_t len) {
if (len < 1)
return false;
history_max_len = len;
if (len < history.size()) {
history.resize(len);
}
return true;
}
/* Save the history in the specified file. On success *true* is returned
* otherwise *false* is returned. */
inline bool SaveHistory(const char *path) {
std::ofstream f(path); // TODO: need 'std::ios::binary'?
if (!f)
return false;
for (const auto &h : history) {
f << h << std::endl;
}
return true;
}
/* Load the history from the specified file. If the file does not exist
* zero is returned and no operation is performed.
*
* If the file exists and the operation succeeded *true* is returned, otherwise
* on error *false* is returned. */
inline bool LoadHistory(const char *path) {
std::ifstream f(path);
if (!f)
return false;
std::string line;
while (std::getline(f, line)) {
AddHistory(line.c_str());
}
return true;
}
inline const std::vector<std::string> &GetHistory() { return history; }
} // namespace linenoise
#ifdef _WIN32
#undef isatty
#undef write
#undef read
#pragma warning(pop)
#endif
#endif /* __LINENOISE_HPP */
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