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module trial.terminal;
version(Posix) {
enum SIGWINCH = 28;
__gshared bool windowSizeChanged = false;
__gshared bool interrupted = false;
__gshared bool hangedUp = false;
version(with_eventloop)
struct SignalFired {}
extern(C)
void sizeSignalHandler(int sigNumber) nothrow {
windowSizeChanged = true;
version(with_eventloop) {
import arsd.eventloop;
try
send(SignalFired());
catch(Exception) {}
}
}
extern(C)
void interruptSignalHandler(int sigNumber) nothrow {
interrupted = true;
version(with_eventloop) {
import arsd.eventloop;
try
send(SignalFired());
catch(Exception) {}
}
}
extern(C)
void hangupSignalHandler(int sigNumber) nothrow {
hangedUp = true;
version(with_eventloop) {
import arsd.eventloop;
try
send(SignalFired());
catch(Exception) {}
}
}
}
version(Windows) {
import core.sys.windows.windows;
import std.string : toStringz;
private {
enum RED_BIT = 4;
enum GREEN_BIT = 2;
enum BLUE_BIT = 1;
}
}
version(Posix) {
import core.sys.posix.termios;
import core.sys.posix.unistd;
import unix = core.sys.posix.unistd;
import core.sys.posix.sys.types;
import core.sys.posix.sys.time;
import core.stdc.stdio;
private {
enum RED_BIT = 1;
enum GREEN_BIT = 2;
enum BLUE_BIT = 4;
}
version(linux) {
extern(C) int ioctl(int, int, ...);
enum int TIOCGWINSZ = 0x5413;
} else version(OSX) {
import core.stdc.config;
extern(C) int ioctl(int, c_ulong, ...);
enum TIOCGWINSZ = 1074295912;
} else static assert(0, "confirm the value of tiocgwinsz");
struct winsize {
ushort ws_row;
ushort ws_col;
ushort ws_xpixel;
ushort ws_ypixel;
}
enum string builtinTermcap = `
# Generic VT entry.
vg|vt-generic|Generic VT entries:\
:bs:mi:ms:pt:xn:xo:it#8:\
:RA=\E[?7l:SA=\E?7h:\
:bl=^G:cr=^M:ta=^I:\
:cm=\E[%i%d;%dH:\
:le=^H:up=\E[A:do=\E[B:nd=\E[C:\
:LE=\E[%dD:RI=\E[%dC:UP=\E[%dA:DO=\E[%dB:\
:ho=\E[H:cl=\E[H\E[2J:ce=\E[K:cb=\E[1K:cd=\E[J:sf=\ED:sr=\EM:\
:ct=\E[3g:st=\EH:\
:cs=\E[%i%d;%dr:sc=\E7:rc=\E8:\
:ei=\E[4l:ic=\E[@:IC=\E[%d@:al=\E[L:AL=\E[%dL:\
:dc=\E[P:DC=\E[%dP:dl=\E[M:DL=\E[%dM:\
:so=\E[7m:se=\E[m:us=\E[4m:ue=\E[m:\
:mb=\E[5m:mh=\E[2m:md=\E[1m:mr=\E[7m:me=\E[m:\
:sc=\E7:rc=\E8:kb=\177:\
:ku=\E[A:kd=\E[B:kr=\E[C:kl=\E[D:
# Slackware 3.1 linux termcap entry (Sat Apr 27 23:03:58 CDT 1996):
lx|linux|console|con80x25|LINUX System Console:\
:do=^J:co#80:li#25:cl=\E[H\E[J:sf=\ED:sb=\EM:\
:le=^H:bs:am:cm=\E[%i%d;%dH:nd=\E[C:up=\E[A:\
:ce=\E[K:cd=\E[J:so=\E[7m:se=\E[27m:us=\E[36m:ue=\E[m:\
:md=\E[1m:mr=\E[7m:mb=\E[5m:me=\E[m:is=\E[1;25r\E[25;1H:\
:ll=\E[1;25r\E[25;1H:al=\E[L:dc=\E[P:dl=\E[M:\
:it#8:ku=\E[A:kd=\E[B:kr=\E[C:kl=\E[D:kb=^H:ti=\E[r\E[H:\
:ho=\E[H:kP=\E[5~:kN=\E[6~:kH=\E[4~:kh=\E[1~:kD=\E[3~:kI=\E[2~:\
:k1=\E[[A:k2=\E[[B:k3=\E[[C:k4=\E[[D:k5=\E[[E:k6=\E[17~:\
:F1=\E[23~:F2=\E[24~:\
:k7=\E[18~:k8=\E[19~:k9=\E[20~:k0=\E[21~:K1=\E[1~:K2=\E[5~:\
:K4=\E[4~:K5=\E[6~:\
:pt:sr=\EM:vt#3:xn:km:bl=^G:vi=\E[?25l:ve=\E[?25h:vs=\E[?25h:\
:sc=\E7:rc=\E8:cs=\E[%i%d;%dr:\
:r1=\Ec:r2=\Ec:r3=\Ec:
# Some other, commonly used linux console entries.
lx|con80x28:co#80:li#28:tc=linux:
lx|con80x43:co#80:li#43:tc=linux:
lx|con80x50:co#80:li#50:tc=linux:
lx|con100x37:co#100:li#37:tc=linux:
lx|con100x40:co#100:li#40:tc=linux:
lx|con132x43:co#132:li#43:tc=linux:
# vt102 - vt100 + insert line etc. VT102 does not have insert character.
v2|vt102|DEC vt102 compatible:\
:co#80:li#24:\
:ic@:IC@:\
:is=\E[m\E[?1l\E>:\
:rs=\E[m\E[?1l\E>:\
:eA=\E)0:as=^N:ae=^O:ac=aaffggjjkkllmmnnooqqssttuuvvwwxx:\
:ks=:ke=:\
:k1=\EOP:k2=\EOQ:k3=\EOR:k4=\EOS:\
:tc=vt-generic:
# vt100 - really vt102 without insert line, insert char etc.
vt|vt100|DEC vt100 compatible:\
:im@:mi@:al@:dl@:ic@:dc@:AL@:DL@:IC@:DC@:\
:tc=vt102:
# Entry for an xterm. Insert mode has been disabled.
vs|xterm|xterm-color|xterm-256color|vs100|xterm terminal emulator (X Window System):\
:am:bs:mi@:km:co#80:li#55:\
:im@:ei@:\
:cl=\E[H\E[J:\
:ct=\E[3k:ue=\E[m:\
:is=\E[m\E[?1l\E>:\
:rs=\E[m\E[?1l\E>:\
:vi=\E[?25l:ve=\E[?25h:\
:eA=\E)0:as=^N:ae=^O:ac=aaffggjjkkllmmnnooqqssttuuvvwwxx:\
:kI=\E[2~:kD=\E[3~:kP=\E[5~:kN=\E[6~:\
:k1=\EOP:k2=\EOQ:k3=\EOR:k4=\EOS:k5=\E[15~:\
:k6=\E[17~:k7=\E[18~:k8=\E[19~:k9=\E[20~:k0=\E[21~:\
:F1=\E[23~:F2=\E[24~:\
:kh=\E[H:kH=\E[F:\
:ks=:ke=:\
:te=\E[2J\E[?47l\E8:ti=\E7\E[?47h:\
:tc=vt-generic:
#rxvt, added by me
rxvt|rxvt-unicode:\
:am:bs:mi@:km:co#80:li#55:\
:im@:ei@:\
:ct=\E[3k:ue=\E[m:\
:is=\E[m\E[?1l\E>:\
:rs=\E[m\E[?1l\E>:\
:vi=\E[?25l:\
:ve=\E[?25h:\
:eA=\E)0:as=^N:ae=^O:ac=aaffggjjkkllmmnnooqqssttuuvvwwxx:\
:kI=\E[2~:kD=\E[3~:kP=\E[5~:kN=\E[6~:\
:k1=\E[11~:k2=\E[12~:k3=\E[13~:k4=\E[14~:k5=\E[15~:\
:k6=\E[17~:k7=\E[18~:k8=\E[19~:k9=\E[20~:k0=\E[21~:\
:F1=\E[23~:F2=\E[24~:\
:kh=\E[7~:kH=\E[8~:\
:ks=:ke=:\
:te=\E[2J\E[?47l\E8:ti=\E7\E[?47h:\
:tc=vt-generic:
# Some other entries for the same xterm.
v2|xterms|vs100s|xterm small window:\
:co#80:li#24:tc=xterm:
vb|xterm-bold|xterm with bold instead of underline:\
:us=\E[1m:tc=xterm:
vi|xterm-ins|xterm with insert mode:\
:mi:im=\E[4h:ei=\E[4l:tc=xterm:
Eterm|Eterm Terminal Emulator (X11 Window System):\
:am:bw:eo:km:mi:ms:xn:xo:\
:co#80:it#8:li#24:lm#0:pa#64:Co#8:AF=\E[3%dm:AB=\E[4%dm:op=\E[39m\E[49m:\
:AL=\E[%dL:DC=\E[%dP:DL=\E[%dM:DO=\E[%dB:IC=\E[%d@:\
:K1=\E[7~:K2=\EOu:K3=\E[5~:K4=\E[8~:K5=\E[6~:LE=\E[%dD:\
:RI=\E[%dC:UP=\E[%dA:ae=^O:al=\E[L:as=^N:bl=^G:cd=\E[J:\
:ce=\E[K:cl=\E[H\E[2J:cm=\E[%i%d;%dH:cr=^M:\
:cs=\E[%i%d;%dr:ct=\E[3g:dc=\E[P:dl=\E[M:do=\E[B:\
:ec=\E[%dX:ei=\E[4l:ho=\E[H:i1=\E[?47l\E>\E[?1l:ic=\E[@:\
:im=\E[4h:is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;3;4;6l\E[4l:\
:k1=\E[11~:k2=\E[12~:k3=\E[13~:k4=\E[14~:k5=\E[15~:\
:k6=\E[17~:k7=\E[18~:k8=\E[19~:k9=\E[20~:kD=\E[3~:\
:kI=\E[2~:kN=\E[6~:kP=\E[5~:kb=^H:kd=\E[B:ke=:kh=\E[7~:\
:kl=\E[D:kr=\E[C:ks=:ku=\E[A:le=^H:mb=\E[5m:md=\E[1m:\
:me=\E[m\017:mr=\E[7m:nd=\E[C:rc=\E8:\
:sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\
:te=\E[2J\E[?47l\E8:ti=\E7\E[?47h:ue=\E[24m:up=\E[A:\
:us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\
:ac=aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~:
# DOS terminal emulator such as Telix or TeleMate.
# This probably also works for the SCO console, though it's incomplete.
an|ansi|ansi-bbs|ANSI terminals (emulators):\
:co#80:li#24:am:\
:is=:rs=\Ec:kb=^H:\
:as=\E[m:ae=:eA=:\
:ac=0\333+\257,\256.\031-\030a\261f\370g\361j\331k\277l\332m\300n\305q\304t\264u\303v\301w\302x\263~\025:\
:kD=\177:kH=\E[Y:kN=\E[U:kP=\E[V:kh=\E[H:\
:k1=\EOP:k2=\EOQ:k3=\EOR:k4=\EOS:k5=\EOT:\
:k6=\EOU:k7=\EOV:k8=\EOW:k9=\EOX:k0=\EOY:\
:tc=vt-generic:
`;
}
enum Bright = 0x08;
enum Color : ushort {
black = 0,
red = RED_BIT,
green = GREEN_BIT,
yellow = red | green,
blue = BLUE_BIT,
magenta = red | blue,
cyan = blue | green,
white = red | green | blue,
DEFAULT = 256,
}
enum ConsoleInputFlags {
raw = 0,
echo = 1,
mouse = 2,
paste = 4,
size = 8,
releasedKeys = 64,
allInputEvents = 8|4|2,
allInputEventsWithRelease = allInputEvents|releasedKeys,
}
enum ConsoleOutputType {
linear = 0,
cellular = 1,
minimalProcessing = 255,
}
enum ForceOption {
automatic = 0,
neverSend = -1,
alwaysSend = 1,
}
struct Terminal {
@disable this();
@disable this(this);
private ConsoleOutputType type;
version(Posix) {
private int fdOut;
private int fdIn;
private int[] delegate() getSizeOverride;
void delegate(in void[]) _writeDelegate;
}
version(Posix) {
bool terminalInFamily(string[] terms...) {
import std.process;
import std.string;
auto term = environment.get("TERM");
foreach(t; terms)
if(indexOf(term, t) != -1)
return true;
return false;
}
bool isMacTerminal() {
import std.process;
import std.string;
auto term = environment.get("TERM");
return term == "xterm-256color";
}
static string[string] termcapDatabase;
static void readTermcapFile(bool useBuiltinTermcap = false) {
import std.file;
import std.stdio;
import std.string;
if(!exists("/etc/termcap"))
useBuiltinTermcap = true;
string current;
void commitCurrentEntry() {
if(current is null)
return;
string names = current;
auto idx = indexOf(names, ":");
if(idx != -1)
names = names[0 .. idx];
foreach(name; split(names, "|"))
termcapDatabase[name] = current;
current = null;
}
void handleTermcapLine(in char[] line) {
if(line.length == 0) {
commitCurrentEntry();
return;
}
if(line[0] == '#')
return;
size_t termination = line.length;
if(line[$-1] == '\\')
termination--;
current ~= strip(line[0 .. termination]);
if(line[$-1] != '\\')
commitCurrentEntry();
}
if(useBuiltinTermcap) {
foreach(line; splitLines(builtinTermcap)) {
handleTermcapLine(line);
}
} else {
foreach(line; File("/etc/termcap").byLine()) {
handleTermcapLine(line);
}
}
}
static string getTermcapDatabase(string terminal) {
import std.string;
if(termcapDatabase is null)
readTermcapFile();
auto data = terminal in termcapDatabase;
if(data is null)
return null;
auto tc = *data;
auto more = indexOf(tc, ":tc=");
if(more != -1) {
auto tcKey = tc[more + ":tc=".length .. $];
auto end = indexOf(tcKey, ":");
if(end != -1)
tcKey = tcKey[0 .. end];
tc = getTermcapDatabase(tcKey) ~ tc;
}
return tc;
}
string[string] termcap;
void readTermcap() {
import std.process;
import std.string;
import std.array;
string termcapData = environment.get("TERMCAP");
if(termcapData.length == 0) {
termcapData = getTermcapDatabase(environment.get("TERM"));
}
auto e = replace(termcapData, "\\\n", "\n");
termcap = null;
foreach(part; split(e, ":")) {
auto things = split(part, "=");
if(things.length)
termcap[things[0]] =
things.length > 1 ? things[1] : null;
}
}
string findSequenceInTermcap(in char[] sequenceIn) {
char[10] sequenceBuffer;
char[] sequence;
if(sequenceIn.length > 0 && sequenceIn[0] == '\033') {
if(!(sequenceIn.length < sequenceBuffer.length - 1))
return null;
sequenceBuffer[1 .. sequenceIn.length + 1] = sequenceIn[];
sequenceBuffer[0] = '\\';
sequenceBuffer[1] = 'E';
sequence = sequenceBuffer[0 .. sequenceIn.length + 1];
} else {
sequence = sequenceBuffer[1 .. sequenceIn.length + 1];
}
import std.array;
foreach(k, v; termcap)
if(v == sequence)
return k;
return null;
}
string getTermcap(string key) {
auto k = key in termcap;
if(k !is null) return *k;
return null;
}
bool doTermcap(T...)(string key, T t) {
import std.conv;
auto fs = getTermcap(key);
if(fs is null)
return false;
int swapNextTwo = 0;
R getArg(R)(int idx) {
if(swapNextTwo == 2) {
idx ++;
swapNextTwo--;
} else if(swapNextTwo == 1) {
idx --;
swapNextTwo--;
}
foreach(i, arg; t) {
if(i == idx)
return to!R(arg);
}
assert(0, to!string(idx) ~ " is out of bounds working " ~ fs);
}
char[256] buffer;
int bufferPos = 0;
void addChar(char c) {
import std.exception;
enforce(bufferPos < buffer.length);
buffer[bufferPos++] = c;
}
void addString(in char[] c) {
import std.exception;
enforce(bufferPos + c.length < buffer.length);
buffer[bufferPos .. bufferPos + c.length] = c[];
bufferPos += c.length;
}
void addInt(int c, int minSize) {
import std.string;
auto str = format("%0"~(minSize ? to!string(minSize) : "")~"d", c);
addString(str);
}
bool inPercent;
int argPosition = 0;
int incrementParams = 0;
bool skipNext;
bool nextIsChar;
bool inBackslash;
foreach(char c; fs) {
if(inBackslash) {
if(c == 'E')
addChar('\033');
else
addChar(c);
inBackslash = false;
} else if(nextIsChar) {
if(skipNext)
skipNext = false;
else
addChar(cast(char) (c + getArg!int(argPosition) + (incrementParams ? 1 : 0)));
if(incrementParams) incrementParams--;
argPosition++;
inPercent = false;
} else if(inPercent) {
switch(c) {
case '%':
addChar('%');
inPercent = false;
break;
case '2':
case '3':
case 'd':
if(skipNext)
skipNext = false;
else
addInt(getArg!int(argPosition) + (incrementParams ? 1 : 0),
c == 'd' ? 0 : (c - '0')
);
if(incrementParams) incrementParams--;
argPosition++;
inPercent = false;
break;
case '.':
if(skipNext)
skipNext = false;
else
addChar(cast(char) (getArg!int(argPosition) + (incrementParams ? 1 : 0)));
if(incrementParams) incrementParams--;
argPosition++;
break;
case '+':
nextIsChar = true;
inPercent = false;
break;
case 'i':
incrementParams = 2;
inPercent = false;
break;
case 's':
skipNext = true;
inPercent = false;
break;
case 'b':
argPosition--;
inPercent = false;
break;
case 'r':
swapNextTwo = 2;
inPercent = false;
break;
default:
assert(0, "not supported " ~ c);
}
} else {
if(c == '%')
inPercent = true;
else if(c == '\\')
inBackslash = true;
else
addChar(c);
}
}
writeStringRaw(buffer[0 .. bufferPos]);
return true;
}
}
version(Posix)
this(ConsoleOutputType type, int fdIn = 0, int fdOut = 1, int[] delegate() getSizeOverride = null) {
this.fdIn = fdIn;
this.fdOut = fdOut;
this.getSizeOverride = getSizeOverride;
this.type = type;
readTermcap();
if(type == ConsoleOutputType.minimalProcessing) {
_suppressDestruction = true;
return;
}
if(type == ConsoleOutputType.cellular) {
doTermcap("ti");
clear();
moveTo(0, 0, ForceOption.alwaysSend);
}
if(terminalInFamily("xterm", "rxvt", "screen")) {
writeStringRaw("\033[22;0t");
}
}
version(Windows) {
HANDLE hConsole;
CONSOLE_SCREEN_BUFFER_INFO originalSbi;
}
version(Windows)
this(ConsoleOutputType type) {
if(type == ConsoleOutputType.cellular) {
hConsole = CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE, 0, null, CONSOLE_TEXTMODE_BUFFER, null);
if(hConsole == INVALID_HANDLE_VALUE) {
import std.conv;
throw new Exception(to!string(GetLastError()));
}
SetConsoleActiveScreenBuffer(hConsole);
COORD size;
clear();
} else {
hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
}
GetConsoleScreenBufferInfo(hConsole, &originalSbi);
}
bool _suppressDestruction;
version(Posix)
~this() {
if(_suppressDestruction) {
flush();
return;
}
if(type == ConsoleOutputType.cellular) {
doTermcap("te");
}
if(terminalInFamily("xterm", "rxvt", "screen")) {
writeStringRaw("\033[23;0t");
}
showCursor();
reset();
flush();
if(lineGetter !is null)
lineGetter.dispose();
}
version(Windows)
~this() {
flush();
reset();
showCursor();
if(lineGetter !is null)
lineGetter.dispose();
auto stdo = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleActiveScreenBuffer(stdo);
if(hConsole !is stdo)
CloseHandle(hConsole);
}
LineGetter lineGetter;
int _currentForeground = Color.DEFAULT;
int _currentBackground = Color.DEFAULT;
RGB _currentForegroundRGB;
RGB _currentBackgroundRGB;
bool reverseVideo = false;
bool setTrueColor(RGB foreground, RGB background, ForceOption force = ForceOption.automatic) {
if(force == ForceOption.neverSend) {
_currentForeground = -1;
_currentBackground = -1;
_currentForegroundRGB = foreground;
_currentBackgroundRGB = background;
return true;
}
if(force == ForceOption.automatic && _currentForeground == -1 && _currentBackground == -1 && (_currentForegroundRGB == foreground && _currentBackgroundRGB == background))
return true;
_currentForeground = -1;
_currentBackground = -1;
_currentForegroundRGB = foreground;
_currentBackgroundRGB = background;
version(Windows) {
flush();
ushort setTob = cast(ushort) approximate16Color(background);
ushort setTof = cast(ushort) approximate16Color(foreground);
SetConsoleTextAttribute(
hConsole,
cast(ushort)((setTob << 4) | setTof));
return false;
} else {
import std.process;
import std.string;
if(environment.get("TERM") == "rxvt" || environment.get("TERM") == "linux") {
auto setTof = approximate16Color(foreground);
auto setTob = approximate16Color(background);
writeStringRaw(format("\033[%dm\033[3%dm\033[4%dm",
(setTof & Bright) ? 1 : 0,
cast(int) (setTof & ~Bright),
cast(int) (setTob & ~Bright)
));
return false;
}
writeStringRaw(format("\033[38;5;%dm\033[48;5;%dm",
colorToXTermPaletteIndex(foreground),
colorToXTermPaletteIndex(background)
));
return true;
}
}
void color(int foreground, int background, ForceOption force = ForceOption.automatic, bool reverseVideo = false) {
if(force != ForceOption.neverSend) {
version(Windows) {
ushort setTof = cast(ushort) foreground;
ushort setTob = cast(ushort) background;
if(background == Color.DEFAULT)
setTob = Color.black;
if(foreground == Color.DEFAULT)
setTof = Color.white;
if(force == ForceOption.alwaysSend || reverseVideo != this.reverseVideo || foreground != _currentForeground || background != _currentBackground) {
flush();
if(reverseVideo) {
if(background == Color.DEFAULT)
setTof = Color.black;
else
setTof = cast(ushort) background | (foreground & Bright);
if(background == Color.DEFAULT)
setTob = Color.white;
else
setTob = cast(ushort) (foreground & ~Bright);
}
SetConsoleTextAttribute(
hConsole,
cast(ushort)((setTob << 4) | setTof));
}
} else {
import std.process;
ushort setTof = cast(ushort) foreground & ~Bright;
ushort setTob = cast(ushort) background & ~Bright;
if(foreground & Color.DEFAULT)
setTof = 9;
if(background == Color.DEFAULT)
setTob = 9;
import std.string;
if(force == ForceOption.alwaysSend || reverseVideo != this.reverseVideo || foreground != _currentForeground || background != _currentBackground) {
writeStringRaw(format("\033[%dm\033[3%dm\033[4%dm\033[%dm",
(foreground != Color.DEFAULT && (foreground & Bright)) ? 1 : 0,
cast(int) setTof,
cast(int) setTob,
reverseVideo ? 7 : 27
));
}
}
}
_currentForeground = foreground;
_currentBackground = background;
this.reverseVideo = reverseVideo;
}
private bool _underlined = false;
void underline(bool set, ForceOption force = ForceOption.automatic) {
if(set == _underlined && force != ForceOption.alwaysSend)
return;
version(Posix) {
if(set)
writeStringRaw("\033[4m");
else
writeStringRaw("\033[24m");
}
_underlined = set;
}
void reset() {
version(Windows)
SetConsoleTextAttribute(
hConsole,
originalSbi.wAttributes);
else
writeStringRaw("\033[0m");
_underlined = false;
_currentForeground = Color.DEFAULT;
_currentBackground = Color.DEFAULT;
reverseVideo = false;
}
@property int cursorX() {
return _cursorX;
}
@property int cursorY() {
return _cursorY;
}
private int _cursorX;
private int _cursorY;
void moveTo(int x, int y, ForceOption force = ForceOption.automatic) {
if(force != ForceOption.neverSend && (force == ForceOption.alwaysSend || x != _cursorX || y != _cursorY)) {
executeAutoHideCursor();
version(Posix) {
doTermcap("cm", y, x);
} else version(Windows) {
flush();
COORD coord = {cast(short) x, cast(short) y};
SetConsoleCursorPosition(hConsole, coord);
} else static assert(0);
}
_cursorX = x;
_cursorY = y;
}
void showCursor() {
version(Posix)
doTermcap("ve");
else {
CONSOLE_CURSOR_INFO info;
GetConsoleCursorInfo(hConsole, &info);
info.bVisible = true;
SetConsoleCursorInfo(hConsole, &info);
}
}
void hideCursor() {
version(Posix) {
doTermcap("vi");
} else {
CONSOLE_CURSOR_INFO info;
GetConsoleCursorInfo(hConsole, &info);
info.bVisible = false;
SetConsoleCursorInfo(hConsole, &info);
}
}
private bool autoHidingCursor;
private bool autoHiddenCursor;
void autoHideCursor() {
autoHidingCursor = true;
}
private void executeAutoHideCursor() {
if(autoHidingCursor) {
version(Windows)
hideCursor();
else version(Posix) {
writeBuffer = "\033[?25l" ~ writeBuffer;
}
autoHiddenCursor = true;
autoHidingCursor = false;
}
}
void autoShowCursor() {
if(autoHiddenCursor)
showCursor();
autoHidingCursor = false;
autoHiddenCursor = false;
}
void setTitle(string t) {
version(Windows) {
SetConsoleTitleA(toStringz(t));
} else {
import std.string;
if(terminalInFamily("xterm", "rxvt", "screen"))
writeStringRaw(format("\033]0;%s\007", t));
}
}
void flush() {
if(writeBuffer.length == 0)
return;
version(Posix) {
if(_writeDelegate !is null) {
_writeDelegate(writeBuffer);
} else {
ssize_t written;
while(writeBuffer.length) {
written = unix.write(this.fdOut, writeBuffer.ptr, writeBuffer.length);
if(written < 0)
throw new Exception("write failed for some reason");
writeBuffer = writeBuffer[written .. $];
}
}
} else version(Windows) {
import std.conv;
wstring writeBufferw = to!wstring(writeBuffer);
while(writeBufferw.length) {
DWORD written;
WriteConsoleW(hConsole, writeBufferw.ptr, cast(DWORD)writeBufferw.length, &written, null);
writeBufferw = writeBufferw[written .. $];
}
writeBuffer = null;
}
}
int[] getSize() {
version(Windows) {
CONSOLE_SCREEN_BUFFER_INFO info;
GetConsoleScreenBufferInfo( hConsole, &info );
int cols, rows;
cols = (info.srWindow.Right - info.srWindow.Left + 1);
rows = (info.srWindow.Bottom - info.srWindow.Top + 1);
return [cols, rows];
} else {
if(getSizeOverride is null) {
winsize w;
ioctl(0, TIOCGWINSZ, &w);
return [w.ws_col, w.ws_row];
} else return getSizeOverride();
}
}
void updateSize() {
auto size = getSize();
_width = size[0];
_height = size[1];
}
private int _width;
private int _height;
@property int width() {
if(_width == 0 || _height == 0)
updateSize();
return _width;
}
@property int height() {
if(_width == 0 || _height == 0)
updateSize();
return _height;
}
void writef(T...)(string f, T t) {
import std.string;
writePrintableString(format(f, t));
}
void writefln(T...)(string f, T t) {
writef(f ~ "\n", t);
}
void write(T...)(T t) {
import std.conv;
string data;
foreach(arg; t) {
data ~= to!string(arg);
}
writePrintableString(data);
}
void writeln(T...)(T t) {
write(t, "\n");
}
void writePrintableString(in char[] s, ForceOption force = ForceOption.automatic) {
foreach(ch; s) {
switch(ch) {
case '\n':
_cursorX = 0;
_cursorY++;
break;
case '\r':
_cursorX = 0;
break;
case '\t':
_cursorX ++;
_cursorX += _cursorX % 8;
break;
default:
if(ch <= 127)
_cursorX++;
}
if(_wrapAround && _cursorX > width) {
_cursorX = 0;
_cursorY++;
}
if(_cursorY == height)
_cursorY--;
}
writeStringRaw(s);
}
bool _wrapAround = true;
deprecated alias writePrintableString writeString;
private string writeBuffer;
void writeStringRaw(in char[] s) {
version(Posix) {
writeBuffer ~= s;
} else version(Windows) {
writeBuffer ~= s;
} else static assert(0);
}
void clear() {
version(Posix) {
doTermcap("cl");
} else version(Windows) {
flush();
DWORD c;
CONSOLE_SCREEN_BUFFER_INFO csbi;
DWORD conSize;
GetConsoleScreenBufferInfo(hConsole, &csbi);
conSize = csbi.dwSize.X * csbi.dwSize.Y;
COORD coordScreen;
FillConsoleOutputCharacterA(hConsole, ' ', conSize, coordScreen, &c);
FillConsoleOutputAttribute(hConsole, csbi.wAttributes, conSize, coordScreen, &c);
moveTo(0, 0, ForceOption.alwaysSend);
}
_cursorX = 0;
_cursorY = 0;
}
string getline(string prompt = null) {
if(lineGetter is null)
lineGetter = new LineGetter(&this);
lineGetter.terminal = &this;
if(prompt !is null)
lineGetter.prompt = prompt;
auto input = RealTimeConsoleInput(&this, ConsoleInputFlags.raw);
auto line = lineGetter.getline(&input);
writePrintableString("\n");
return line;
}
}
struct RealTimeConsoleInput {
@disable this();
@disable this(this);
version(Posix) {
private int fdOut;
private int fdIn;
private sigaction_t oldSigWinch;
private sigaction_t oldSigIntr;
private sigaction_t oldHupIntr;
private termios old;
ubyte[128] hack;
}
version(Windows) {
private DWORD oldInput;
private DWORD oldOutput;
HANDLE inputHandle;
}
private ConsoleInputFlags flags;
private Terminal* terminal;
private void delegate()[] destructor;
public this(Terminal* terminal, ConsoleInputFlags flags) {
this.flags = flags;
this.terminal = terminal;
version(Windows) {
inputHandle = GetStdHandle(STD_INPUT_HANDLE);
GetConsoleMode(inputHandle, &oldInput);
DWORD mode = 0;
mode |= ENABLE_PROCESSED_INPUT ;
mode |= ENABLE_WINDOW_INPUT ;
if(flags & ConsoleInputFlags.echo)
mode |= ENABLE_ECHO_INPUT;
if(flags & ConsoleInputFlags.mouse)
mode |= ENABLE_MOUSE_INPUT;
SetConsoleMode(inputHandle, mode);
destructor ~= { SetConsoleMode(inputHandle, oldInput); };
GetConsoleMode(terminal.hConsole, &oldOutput);
mode = 0;
mode |= ENABLE_PROCESSED_OUTPUT;
mode |= ENABLE_WRAP_AT_EOL_OUTPUT;
SetConsoleMode(terminal.hConsole, mode);
destructor ~= { SetConsoleMode(terminal.hConsole, oldOutput); };
}
version(Posix) {
this.fdIn = terminal.fdIn;
this.fdOut = terminal.fdOut;
if(fdIn != -1) {
tcgetattr(fdIn, &old);
auto n = old;
auto f = ICANON;
if(!(flags & ConsoleInputFlags.echo))
f |= ECHO;
n.c_lflag &= ~f;
tcsetattr(fdIn, TCSANOW, &n);
}
if(flags & ConsoleInputFlags.size) {
import core.sys.posix.signal;
sigaction_t n;
n.sa_handler = &sizeSignalHandler;
n.sa_mask = cast(sigset_t) 0;
n.sa_flags = 0;
sigaction(SIGWINCH, &n, &oldSigWinch);
}
{
import core.sys.posix.signal;
sigaction_t n;
n.sa_handler = &interruptSignalHandler;
n.sa_mask = cast(sigset_t) 0;
n.sa_flags = 0;
sigaction(SIGINT, &n, &oldSigIntr);
}
{
import core.sys.posix.signal;
sigaction_t n;
n.sa_handler = &hangupSignalHandler;
n.sa_mask = cast(sigset_t) 0;
n.sa_flags = 0;
sigaction(SIGHUP, &n, &oldHupIntr);
}
if(flags & ConsoleInputFlags.mouse) {
terminal.writeStringRaw("\033[?1000h");
destructor ~= { terminal.writeStringRaw("\033[?1000l"); };
import std.process : environment;
if(terminal.terminalInFamily("xterm") && environment.get("MOUSE_HACK") != "1002") {
terminal.writeStringRaw("\033[?1003h");
destructor ~= { terminal.writeStringRaw("\033[?1003l"); };
} else if(terminal.terminalInFamily("rxvt", "screen") || environment.get("MOUSE_HACK") == "1002") {
terminal.writeStringRaw("\033[?1002h");
destructor ~= { terminal.writeStringRaw("\033[?1002l"); };
}
}
if(flags & ConsoleInputFlags.paste) {
if(terminal.terminalInFamily("xterm", "rxvt", "screen")) {
terminal.writeStringRaw("\033[?2004h");
destructor ~= { terminal.writeStringRaw("\033[?2004l"); };
}
}
if(terminal.terminalInFamily("xterm", "screen", "linux") && !terminal.isMacTerminal()) {
terminal.writeStringRaw("\033%G");
}
terminal.flush();
}
version(with_eventloop) {
import arsd.eventloop;
version(Windows)
auto listenTo = inputHandle;
else version(Posix)
auto listenTo = this.fdIn;
else static assert(0, "idk about this OS");
version(Posix)
addListener(&signalFired);
if(listenTo != -1) {
addFileEventListeners(listenTo, &eventListener, null, null);
destructor ~= { removeFileEventListeners(listenTo); };
}
addOnIdle(&terminal.flush);
destructor ~= { removeOnIdle(&terminal.flush); };
}
}
version(with_eventloop) {
version(Posix)
void signalFired(SignalFired) {
if(interrupted) {
interrupted = false;
send(InputEvent(UserInterruptionEvent(), terminal));
}
if(windowSizeChanged)
send(checkWindowSizeChanged());
if(hangedUp) {
hangedUp = false;
send(InputEvent(HangupEvent(), terminal));
}
}
import arsd.eventloop;
void eventListener(OsFileHandle fd) {
auto queue = readNextEvents();
foreach(event; queue)
send(event);
}
}
~this() {
version(Posix)
if(fdIn != -1)
tcsetattr(fdIn, TCSANOW, &old);
version(Posix) {
if(flags & ConsoleInputFlags.size) {
sigaction(SIGWINCH, &oldSigWinch, null);
}
sigaction(SIGINT, &oldSigIntr, null);
sigaction(SIGHUP, &oldHupIntr, null);
}
foreach_reverse(d; destructor)
d();
}
bool kbhit() {
auto got = getch(true);
if(got == dchar.init)
return false;
getchBuffer = got;
return true;
}
bool timedCheckForInput(int milliseconds) {
version(Windows) {
auto response = WaitForSingleObject(terminal.hConsole, milliseconds);
if(response == 0)
return true;
return false;
} else version(Posix) {
if(fdIn == -1)
return false;
timeval tv;
tv.tv_sec = 0;
tv.tv_usec = milliseconds * 1000;
fd_set fs;
FD_ZERO(&fs);
FD_SET(fdIn, &fs);
if(select(fdIn + 1, &fs, null, null, &tv) == -1) {
return false;
}
return FD_ISSET(fdIn, &fs);
}
}
bool anyInput_internal() {
if(inputQueue.length || timedCheckForInput(0))
return true;
version(Posix)
if(interrupted || windowSizeChanged || hangedUp)
return true;
return false;
}
private dchar getchBuffer;
dchar getch(bool nonblocking = false) {
if(getchBuffer != dchar.init) {
auto a = getchBuffer;
getchBuffer = dchar.init;
return a;
}
if(nonblocking && !anyInput_internal())
return dchar.init;
auto event = nextEvent();
while(event.type != InputEvent.Type.KeyboardEvent || event.keyboardEvent.pressed == false) {
if(event.type == InputEvent.Type.UserInterruptionEvent)
throw new UserInterruptionException();
if(event.type == InputEvent.Type.HangupEvent)
throw new HangupException();
if(event.type == InputEvent.Type.EndOfFileEvent)
return dchar.init;
if(nonblocking && !anyInput_internal())
return dchar.init;
event = nextEvent();
}
return event.keyboardEvent.which;
}
version(Posix)
int nextRaw(bool interruptable = false) {
if(fdIn == -1)
return 0;
char[1] buf;
try_again:
auto ret = read(fdIn, buf.ptr, buf.length);
if(ret == 0)
return 0;
if(ret == -1) {
import core.stdc.errno;
if(errno == EINTR)
if(interruptable)
return -1;
else
goto try_again;
else
throw new Exception("read failed");
}
if(ret == 1)
return inputPrefilter ? inputPrefilter(buf[0]) : buf[0];
else
assert(0);
}
version(Posix)
int delegate(char) inputPrefilter;
version(Posix)
dchar nextChar(int starting) {
if(starting <= 127)
return cast(dchar) starting;
char[6] buffer;
int pos = 0;
buffer[pos++] = cast(char) starting;
int remaining = 0;
ubyte magic = starting & 0xff;
while(magic & 0b1000_000) {
remaining++;
magic <<= 1;
}
while(remaining && pos < buffer.length) {
buffer[pos++] = cast(char) nextRaw();
remaining--;
}
import std.utf;
size_t throwAway;
return decode(buffer[], throwAway);
}
InputEvent checkWindowSizeChanged() {
auto oldWidth = terminal.width;
auto oldHeight = terminal.height;
terminal.updateSize();
version(Posix)
windowSizeChanged = false;
return InputEvent(SizeChangedEvent(oldWidth, oldHeight, terminal.width, terminal.height), terminal);
}
InputEvent nextEvent() {
terminal.flush();
if(inputQueue.length) {
auto e = inputQueue[0];
inputQueue = inputQueue[1 .. $];
return e;
}
wait_for_more:
version(Posix)
if(interrupted) {
interrupted = false;
return InputEvent(UserInterruptionEvent(), terminal);
}
version(Posix)
if(hangedUp) {
hangedUp = false;
return InputEvent(HangupEvent(), terminal);
}
version(Posix)
if(windowSizeChanged) {
return checkWindowSizeChanged();
}
auto more = readNextEvents();
if(!more.length)
goto wait_for_more;
assert(more.length);
auto e = more[0];
inputQueue = more[1 .. $];
return e;
}
InputEvent* peekNextEvent() {
if(inputQueue.length)
return &(inputQueue[0]);
return null;
}
enum InjectionPosition { head, tail }
void injectEvent(InputEvent ev, InjectionPosition where) {
final switch(where) {
case InjectionPosition.head:
inputQueue = ev ~ inputQueue;
break;
case InjectionPosition.tail:
inputQueue ~= ev;
break;
}
}
InputEvent[] inputQueue;
version(Windows)
InputEvent[] readNextEvents() {
terminal.flush();
INPUT_RECORD[32] buffer;
DWORD actuallyRead;
auto success = ReadConsoleInputA(inputHandle, buffer.ptr, buffer.length, &actuallyRead);
if(success == 0)
throw new Exception("ReadConsoleInput");
InputEvent[] newEvents;
input_loop: foreach(record; buffer[0 .. actuallyRead]) {
switch(record.EventType) {
case KEY_EVENT:
auto ev = record.KeyEvent;
KeyboardEvent ke;
CharacterEvent e;
NonCharacterKeyEvent ne;
e.eventType = ev.bKeyDown ? CharacterEvent.Type.Pressed : CharacterEvent.Type.Released;
ne.eventType = ev.bKeyDown ? NonCharacterKeyEvent.Type.Pressed : NonCharacterKeyEvent.Type.Released;
ke.pressed = ev.bKeyDown ? true : false;
if(!(flags & ConsoleInputFlags.releasedKeys) && !ev.bKeyDown)
break;
e.modifierState = ev.dwControlKeyState;
ne.modifierState = ev.dwControlKeyState;
ke.modifierState = ev.dwControlKeyState;
if(ev.UnicodeChar) {
ke.which = cast(dchar) cast(wchar) ev.UnicodeChar;
newEvents ~= InputEvent(ke, terminal);
e.character = cast(dchar) cast(wchar) ev.UnicodeChar;
newEvents ~= InputEvent(e, terminal);
} else {
ne.key = cast(NonCharacterKeyEvent.Key) ev.wVirtualKeyCode;
ke.which = cast(KeyboardEvent.Key) (ev.wVirtualKeyCode + 0xF0000);
foreach(member; __traits(allMembers, NonCharacterKeyEvent.Key))
if(__traits(getMember, NonCharacterKeyEvent.Key, member) == ne.key) {
newEvents ~= InputEvent(ke, terminal);
newEvents ~= InputEvent(ne, terminal);
break;
}
}
break;
case MOUSE_EVENT:
auto ev = record.MouseEvent;
MouseEvent e;
e.modifierState = ev.dwControlKeyState;
e.x = ev.dwMousePosition.X;
e.y = ev.dwMousePosition.Y;
switch(ev.dwEventFlags) {
case 0:
e.eventType = MouseEvent.Type.Pressed;
static DWORD lastButtonState;
auto lastButtonState2 = lastButtonState;
e.buttons = ev.dwButtonState;
lastButtonState = e.buttons;
if(cast(DWORD) e.buttons < lastButtonState2) {
e.eventType = MouseEvent.Type.Released;
e.buttons = lastButtonState2 & ~e.buttons;
}
break;
case MOUSE_MOVED:
e.eventType = MouseEvent.Type.Moved;
e.buttons = ev.dwButtonState;
break;
case 0x0004:
e.eventType = MouseEvent.Type.Pressed;
if(ev.dwButtonState > 0)
e.buttons = MouseEvent.Button.ScrollDown;
else
e.buttons = MouseEvent.Button.ScrollUp;
break;
default:
continue input_loop;
}
newEvents ~= InputEvent(e, terminal);
break;
case WINDOW_BUFFER_SIZE_EVENT:
auto ev = record.WindowBufferSizeEvent;
auto oldWidth = terminal.width;
auto oldHeight = terminal.height;
terminal._width = ev.dwSize.X;
terminal._height = ev.dwSize.Y;
newEvents ~= InputEvent(SizeChangedEvent(oldWidth, oldHeight, terminal.width, terminal.height), terminal);
break;
default:
}
}
return newEvents;
}
version(Posix)
InputEvent[] readNextEvents() {
terminal.flush();
auto initial = readNextEventsHelper();
while(timedCheckForInput(0)) {
auto ne = readNextEventsHelper();
initial ~= ne;
foreach(n; ne)
if(n.type == InputEvent.Type.EndOfFileEvent)
return initial;
}
return initial;
}
version(Posix)
InputEvent[] readNextEventsHelper() {
InputEvent[] charPressAndRelease(dchar character) {
if((flags & ConsoleInputFlags.releasedKeys))
return [
InputEvent(KeyboardEvent(true, character, 0), terminal),
InputEvent(KeyboardEvent(false, character, 0), terminal),
InputEvent(CharacterEvent(CharacterEvent.Type.Pressed, character, 0), terminal),
InputEvent(CharacterEvent(CharacterEvent.Type.Released, character, 0), terminal),
];
else return [
InputEvent(KeyboardEvent(true, character, 0), terminal),
InputEvent(CharacterEvent(CharacterEvent.Type.Pressed, character, 0), terminal)
];
}
InputEvent[] keyPressAndRelease(NonCharacterKeyEvent.Key key, uint modifiers = 0) {
if((flags & ConsoleInputFlags.releasedKeys))
return [
InputEvent(KeyboardEvent(true, cast(dchar)(key) + 0xF0000, modifiers), terminal),
InputEvent(KeyboardEvent(false, cast(dchar)(key) + 0xF0000, modifiers), terminal),
InputEvent(NonCharacterKeyEvent(NonCharacterKeyEvent.Type.Pressed, key, modifiers), terminal),
InputEvent(NonCharacterKeyEvent(NonCharacterKeyEvent.Type.Released, key, modifiers), terminal),
];
else return [
InputEvent(KeyboardEvent(true, cast(dchar)(key) + 0xF0000, modifiers), terminal),
InputEvent(NonCharacterKeyEvent(NonCharacterKeyEvent.Type.Pressed, key, modifiers), terminal)
];
}
char[30] sequenceBuffer;
char[] readEscapeSequence(char[] sequence) {
int sequenceLength = 2;
sequence[0] = '\033';
sequence[1] = '[';
while(sequenceLength < sequence.length) {
auto n = nextRaw();
sequence[sequenceLength++] = cast(char) n;
if(n >= 0x40 && !(sequenceLength == 3 && n == '['))
break;
}
return sequence[0 .. sequenceLength];
}
InputEvent[] translateTermcapName(string cap) {
switch(cap) {
case "k1":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F1);
case "k2":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F2);
case "k3":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F3);
case "k4":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F4);
case "k5":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F5);
case "k6":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F6);
case "k7":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F7);
case "k8":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F8);
case "k9":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F9);
case "k;":
case "k0":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F10);
case "F1":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F11);
case "F2":
return keyPressAndRelease(NonCharacterKeyEvent.Key.F12);
case "kb":
return charPressAndRelease('\b');
case "kD":
return keyPressAndRelease(NonCharacterKeyEvent.Key.Delete);
case "kd":
case "do":
return keyPressAndRelease(NonCharacterKeyEvent.Key.DownArrow);
case "ku":
case "up":
return keyPressAndRelease(NonCharacterKeyEvent.Key.UpArrow);
case "kl":
return keyPressAndRelease(NonCharacterKeyEvent.Key.LeftArrow);
case "kr":
case "nd":
return keyPressAndRelease(NonCharacterKeyEvent.Key.RightArrow);
case "kN":
case "K5":
return keyPressAndRelease(NonCharacterKeyEvent.Key.PageDown);
case "kP":
case "K2":
return keyPressAndRelease(NonCharacterKeyEvent.Key.PageUp);
case "ho":
case "kh":
case "K1":
return keyPressAndRelease(NonCharacterKeyEvent.Key.Home);
case "kH":
return keyPressAndRelease(NonCharacterKeyEvent.Key.End);
case "kI":
return keyPressAndRelease(NonCharacterKeyEvent.Key.Insert);
default:
}
return null;
}
InputEvent[] doEscapeSequence(in char[] sequence) {
switch(sequence) {
case "\033[200~":
string data;
for(;;) {
auto n = nextRaw();
if(n == '\033') {
n = nextRaw();
if(n == '[') {
auto esc = readEscapeSequence(sequenceBuffer);
if(esc == "\033[201~") {
break;
} else {
data ~= esc;
}
} else {
data ~= '\033';
data ~= cast(char) n;
}
} else {
data ~= cast(char) n;
}
}
return [InputEvent(PasteEvent(data), terminal)];
case "\033[M":
auto buttonCode = nextRaw() - 32;
auto x = cast(int) ((nextRaw())) - 33;
auto y = cast(int) ((nextRaw())) - 33;
bool isRelease = (buttonCode & 0b11) == 3;
int buttonNumber;
if(!isRelease) {
buttonNumber = (buttonCode & 0b11);
if(buttonCode & 64)
buttonNumber += 3;
buttonNumber++;
if(buttonNumber == 2)
buttonNumber = 3;
else if(buttonNumber == 3)
buttonNumber = 2;
}
auto modifiers = buttonCode & (0b0001_1100);
MouseEvent m;
if(buttonCode & 32)
m.eventType = MouseEvent.Type.Moved;
else
m.eventType = isRelease ? MouseEvent.Type.Released : MouseEvent.Type.Pressed;
static int buttonsDown = 0;
if(!isRelease && buttonNumber <= 3)
buttonsDown++;
if(isRelease && m.eventType != MouseEvent.Type.Moved) {
if(buttonsDown)
buttonsDown--;
else
m.eventType = MouseEvent.Type.Moved;
}
if(buttonNumber == 0)
m.buttons = 0;
else
m.buttons = 1 << (buttonNumber - 1);
m.x = x;
m.y = y;
m.modifierState = modifiers;
return [InputEvent(m, terminal)];
default:
auto cap = terminal.findSequenceInTermcap(sequence);
if(cap !is null) {
return translateTermcapName(cap);
} else {
if(terminal.terminalInFamily("xterm")) {
import std.conv, std.string;
auto terminator = sequence[$ - 1];
auto parts = sequence[2 .. $ - 1].split(";");
uint modifierState;
int modGot;
if(parts.length > 1)
modGot = to!int(parts[1]);
mod_switch: switch(modGot) {
case 2: modifierState |= ModifierState.shift; break;
case 3: modifierState |= ModifierState.alt; break;
case 4: modifierState |= ModifierState.shift | ModifierState.alt; break;
case 5: modifierState |= ModifierState.control; break;
case 6: modifierState |= ModifierState.shift | ModifierState.control; break;
case 7: modifierState |= ModifierState.alt | ModifierState.control; break;
case 8: modifierState |= ModifierState.shift | ModifierState.alt | ModifierState.control; break;
case 9:
..
case 16:
modifierState |= ModifierState.meta;
if(modGot != 9) {
modGot -= 8;
goto mod_switch;
}
break;
case 20:
..
case 36:
modifierState |= ModifierState.windows;
modGot -= 20;
goto mod_switch;
default:
}
switch(terminator) {
case 'A': return keyPressAndRelease(NonCharacterKeyEvent.Key.UpArrow, modifierState);
case 'B': return keyPressAndRelease(NonCharacterKeyEvent.Key.DownArrow, modifierState);
case 'C': return keyPressAndRelease(NonCharacterKeyEvent.Key.RightArrow, modifierState);
case 'D': return keyPressAndRelease(NonCharacterKeyEvent.Key.LeftArrow, modifierState);
case 'H': return keyPressAndRelease(NonCharacterKeyEvent.Key.Home, modifierState);
case 'F': return keyPressAndRelease(NonCharacterKeyEvent.Key.End, modifierState);
case 'P': return keyPressAndRelease(NonCharacterKeyEvent.Key.F1, modifierState);
case 'Q': return keyPressAndRelease(NonCharacterKeyEvent.Key.F2, modifierState);
case 'R': return keyPressAndRelease(NonCharacterKeyEvent.Key.F3, modifierState);
case 'S': return keyPressAndRelease(NonCharacterKeyEvent.Key.F4, modifierState);
case '~':
switch(parts[0]) {
case "5": return keyPressAndRelease(NonCharacterKeyEvent.Key.PageUp, modifierState);
case "6": return keyPressAndRelease(NonCharacterKeyEvent.Key.PageDown, modifierState);
case "2": return keyPressAndRelease(NonCharacterKeyEvent.Key.Insert, modifierState);
case "3": return keyPressAndRelease(NonCharacterKeyEvent.Key.Delete, modifierState);
case "15": return keyPressAndRelease(NonCharacterKeyEvent.Key.F5, modifierState);
case "17": return keyPressAndRelease(NonCharacterKeyEvent.Key.F6, modifierState);
case "18": return keyPressAndRelease(NonCharacterKeyEvent.Key.F7, modifierState);
case "19": return keyPressAndRelease(NonCharacterKeyEvent.Key.F8, modifierState);
case "20": return keyPressAndRelease(NonCharacterKeyEvent.Key.F9, modifierState);
case "21": return keyPressAndRelease(NonCharacterKeyEvent.Key.F10, modifierState);
case "23": return keyPressAndRelease(NonCharacterKeyEvent.Key.F11, modifierState);
case "24": return keyPressAndRelease(NonCharacterKeyEvent.Key.F12, modifierState);
default:
}
break;
default:
}
} else if(terminal.terminalInFamily("rxvt")) {
} else {
}
}
}
return null;
}
auto c = nextRaw(true);
if(c == -1)
return null;
if(c == 0)
return [InputEvent(EndOfFileEvent(), terminal)];
if(c == '\033') {
if(timedCheckForInput(50)) {
c = nextRaw();
if(c == '[') {
return doEscapeSequence(readEscapeSequence(sequenceBuffer));
} else if(c == 'O') {
auto n = nextRaw();
char[3] thing;
thing[0] = '\033';
thing[1] = 'O';
thing[2] = cast(char) n;
auto cap = terminal.findSequenceInTermcap(thing);
if(cap is null) {
return keyPressAndRelease(NonCharacterKeyEvent.Key.escape) ~
charPressAndRelease('O') ~
charPressAndRelease(thing[2]);
} else {
return translateTermcapName(cap);
}
} else {
return keyPressAndRelease(NonCharacterKeyEvent.Key.escape) ~ charPressAndRelease(nextChar(c));
}
} else {
return keyPressAndRelease(NonCharacterKeyEvent.Key.escape);
}
} else {
auto next = nextChar(c);
if(next == 127)
next = '\b';
return charPressAndRelease(next);
}
}
}
struct KeyboardEvent {
bool pressed;
dchar which;
uint modifierState;
bool isCharacter() {
return !(which >= Key.min && which <= Key.max);
}
enum Key : dchar {
escape = 0x1b + 0xF0000,
F1 = 0x70 + 0xF0000,
F2 = 0x71 + 0xF0000,
F3 = 0x72 + 0xF0000,
F4 = 0x73 + 0xF0000,
F5 = 0x74 + 0xF0000,
F6 = 0x75 + 0xF0000,
F7 = 0x76 + 0xF0000,
F8 = 0x77 + 0xF0000,
F9 = 0x78 + 0xF0000,
F10 = 0x79 + 0xF0000,
F11 = 0x7A + 0xF0000,
F12 = 0x7B + 0xF0000,
LeftArrow = 0x25 + 0xF0000,
RightArrow = 0x27 + 0xF0000,
UpArrow = 0x26 + 0xF0000,
DownArrow = 0x28 + 0xF0000,
Insert = 0x2d + 0xF0000,
Delete = 0x2e + 0xF0000,
Home = 0x24 + 0xF0000,
End = 0x23 + 0xF0000,
PageUp = 0x21 + 0xF0000,
PageDown = 0x22 + 0xF0000,
}
}
struct CharacterEvent {
enum Type {
Released,
Pressed
}
Type eventType;
dchar character;
uint modifierState;
}
struct NonCharacterKeyEvent {
enum Type {
Released,
Pressed
}
Type eventType;
enum Key : int {
escape = 0x1b,
F1 = 0x70,
F2 = 0x71,
F3 = 0x72,
F4 = 0x73,
F5 = 0x74,
F6 = 0x75,
F7 = 0x76,
F8 = 0x77,
F9 = 0x78,
F10 = 0x79,
F11 = 0x7A,
F12 = 0x7B,
LeftArrow = 0x25,
RightArrow = 0x27,
UpArrow = 0x26,
DownArrow = 0x28,
Insert = 0x2d,
Delete = 0x2e,
Home = 0x24,
End = 0x23,
PageUp = 0x21,
PageDown = 0x22,
}
Key key;
uint modifierState;
}
struct PasteEvent {
string pastedText;
}
struct MouseEvent {
enum Type {
Moved = 0,
Pressed = 1,
Released = 2,
Clicked,
}
Type eventType;
enum Button : uint {
None = 0,
Left = 1,
Middle = 4,
Right = 2,
ScrollUp = 8,
ScrollDown = 16
}
uint buttons;
int x;
int y;
uint modifierState;
}
struct SizeChangedEvent {
int oldWidth;
int oldHeight;
int newWidth;
int newHeight;
}
struct UserInterruptionEvent {}
struct HangupEvent {}
struct EndOfFileEvent {}
interface CustomEvent {}
version(Windows)
enum ModifierState : uint {
shift = 0x10,
control = 0x8 | 0x4,
alt = 2 | 1,
windows = 512,
meta = 4096,
scrollLock = 0x40,
}
else
enum ModifierState : uint {
shift = 4,
alt = 2,
control = 16,
meta = 8,
windows = 512
}
version(DDoc)
enum ModifierState : uint {
shift = 4,
alt = 2,
control = 16,
}
struct InputEvent {
enum Type {
KeyboardEvent,
CharacterEvent,
NonCharacterKeyEvent,
PasteEvent,
MouseEvent,
SizeChangedEvent,
UserInterruptionEvent,
EndOfFileEvent,
HangupEvent,
CustomEvent
}
@property Type type() { return t; }
@property Terminal* terminal() { return term; }
@property auto get(Type T)() {
if(type != T)
throw new Exception("Wrong event type");
static if(T == Type.CharacterEvent)
return characterEvent;
else static if(T == Type.KeyboardEvent)
return keyboardEvent;
else static if(T == Type.NonCharacterKeyEvent)
return nonCharacterKeyEvent;
else static if(T == Type.PasteEvent)
return pasteEvent;
else static if(T == Type.MouseEvent)
return mouseEvent;
else static if(T == Type.SizeChangedEvent)
return sizeChangedEvent;
else static if(T == Type.UserInterruptionEvent)
return userInterruptionEvent;
else static if(T == Type.EndOfFileEvent)
return endOfFileEvent;
else static if(T == Type.HangupEvent)
return hangupEvent;
else static if(T == Type.CustomEvent)
return customEvent;
else static assert(0, "Type " ~ T.stringof ~ " not added to the get function");
}
this(CustomEvent c, Terminal* p = null) {
t = Type.CustomEvent;
customEvent = c;
}
private {
this(CharacterEvent c, Terminal* p) {
t = Type.CharacterEvent;
characterEvent = c;
}
this(KeyboardEvent c, Terminal* p) {
t = Type.KeyboardEvent;
keyboardEvent = c;
}
this(NonCharacterKeyEvent c, Terminal* p) {
t = Type.NonCharacterKeyEvent;
nonCharacterKeyEvent = c;
}
this(PasteEvent c, Terminal* p) {
t = Type.PasteEvent;
pasteEvent = c;
}
this(MouseEvent c, Terminal* p) {
t = Type.MouseEvent;
mouseEvent = c;
}
this(SizeChangedEvent c, Terminal* p) {
t = Type.SizeChangedEvent;
sizeChangedEvent = c;
}
this(UserInterruptionEvent c, Terminal* p) {
t = Type.UserInterruptionEvent;
userInterruptionEvent = c;
}
this(HangupEvent c, Terminal* p) {
t = Type.HangupEvent;
hangupEvent = c;
}
this(EndOfFileEvent c, Terminal* p) {
t = Type.EndOfFileEvent;
endOfFileEvent = c;
}
Type t;
Terminal* term;
union {
KeyboardEvent keyboardEvent;
CharacterEvent characterEvent;
NonCharacterKeyEvent nonCharacterKeyEvent;
PasteEvent pasteEvent;
MouseEvent mouseEvent;
SizeChangedEvent sizeChangedEvent;
UserInterruptionEvent userInterruptionEvent;
HangupEvent hangupEvent;
EndOfFileEvent endOfFileEvent;
CustomEvent customEvent;
}
}
}
class LineGetter {
string[] history;
Terminal* terminal;
string historyFilename;
this(Terminal* tty, string historyFilename = null) {
this.terminal = tty;
this.historyFilename = historyFilename;
line.reserve(128);
if(historyFilename.length)
loadSettingsAndHistoryFromFile();
regularForeground = cast(Color) terminal._currentForeground;
background = cast(Color) terminal._currentBackground;
suggestionForeground = Color.blue;
}
void dispose() {
if(historyFilename.length)
saveSettingsAndHistoryToFile();
}
string historyFileDirectory() {
version(Windows) {
char[1024] path;
if(0) {
import core.stdc.string;
return cast(string) path[0 .. strlen(path.ptr)] ~ "\\arsd-getline";
} else {
import std.process;
return environment["APPDATA"] ~ "\\arsd-getline";
}
} else version(Posix) {
import std.process;
return environment["HOME"] ~ "/.arsd-getline";
}
}
Color suggestionForeground;
Color regularForeground;
Color background;
string prompt;
bool autoSuggest = true;
string historyFilter(string candidate) {
return candidate;
}
void saveSettingsAndHistoryToFile() {
import std.file;
if(!exists(historyFileDirectory))
mkdir(historyFileDirectory);
auto fn = historyPath();
import std.stdio;
auto file = File(fn, "wt");
foreach(item; history)
file.writeln(item);
}
private string historyPath() {
import std.path;
auto filename = historyFileDirectory() ~ dirSeparator ~ historyFilename ~ ".history";
return filename;
}
void loadSettingsAndHistoryFromFile() {
import std.file;
history = null;
auto fn = historyPath();
if(exists(fn)) {
import std.stdio;
foreach(line; File(fn, "rt").byLine)
history ~= line.idup;
}
}
protected string[] tabComplete(in dchar[] candidate) {
return history.length > 20 ? history[0 .. 20] : history;
}
private string[] filterTabCompleteList(string[] list) {
if(list.length == 0)
return list;
string[] f;
f.reserve(list.length);
foreach(item; list) {
import std.algorithm;
if(startsWith(item, line[0 .. cursorPosition]))
f ~= item;
}
return f;
}
protected void showTabCompleteList(string[] list) {
if(list.length) {
terminal.writeln();
foreach(item; list) {
terminal.color(suggestionForeground, background);
import std.utf;
auto idx = codeLength!char(line[0 .. cursorPosition]);
terminal.write(" ", item[0 .. idx]);
terminal.color(regularForeground, background);
terminal.writeln(item[idx .. $]);
}
updateCursorPosition();
redraw();
}
}
public string getline(RealTimeConsoleInput* input = null) {
startGettingLine();
if(input is null) {
auto i = RealTimeConsoleInput(terminal, ConsoleInputFlags.raw | ConsoleInputFlags.allInputEvents);
while(workOnLine(i.nextEvent())) {}
} else
while(workOnLine(input.nextEvent())) {}
return finishGettingLine();
}
private int currentHistoryViewPosition = 0;
private dchar[] uncommittedHistoryCandidate;
void loadFromHistory(int howFarBack) {
if(howFarBack < 0)
howFarBack = 0;
if(howFarBack > history.length)
howFarBack = cast(int) history.length;
if(howFarBack == currentHistoryViewPosition)
return;
if(currentHistoryViewPosition == 0) {
if(uncommittedHistoryCandidate.length < line.length) {
uncommittedHistoryCandidate.length = line.length;
}
uncommittedHistoryCandidate[0 .. line.length] = line[];
uncommittedHistoryCandidate = uncommittedHistoryCandidate[0 .. line.length];
uncommittedHistoryCandidate.assumeSafeAppend();
}
currentHistoryViewPosition = howFarBack;
if(howFarBack == 0) {
line.length = uncommittedHistoryCandidate.length;
line.assumeSafeAppend();
line[] = uncommittedHistoryCandidate[];
} else {
line = line[0 .. 0];
line.assumeSafeAppend();
foreach(dchar ch; history[$ - howFarBack])
line ~= ch;
}
cursorPosition = cast(int) line.length;
scrollToEnd();
}
bool insertMode = true;
bool multiLineMode = false;
private dchar[] line;
private int cursorPosition = 0;
private int horizontalScrollPosition = 0;
private void scrollToEnd() {
horizontalScrollPosition = (cast(int) line.length);
horizontalScrollPosition -= availableLineLength();
if(horizontalScrollPosition < 0)
horizontalScrollPosition = 0;
}
private int startOfLineX;
private int startOfLineY;
private string suggestion(string[] list = null) {
import std.algorithm, std.utf;
auto relevantLineSection = line[0 .. cursorPosition];
if(list is null)
list = filterTabCompleteList(tabComplete(relevantLineSection));
if(list.length) {
string commonality = list[0];
foreach(item; list[1 .. $]) {
commonality = commonPrefix(commonality, item);
}
if(commonality.length) {
return commonality[codeLength!char(relevantLineSection) .. $];
}
}
return null;
}
void addChar(dchar ch) {
assert(cursorPosition >= 0 && cursorPosition <= line.length);
if(cursorPosition == line.length)
line ~= ch;
else {
assert(line.length);
if(insertMode) {
line ~= ' ';
for(int i = cast(int) line.length - 2; i >= cursorPosition; i --)
line[i + 1] = line[i];
}
line[cursorPosition] = ch;
}
cursorPosition++;
if(cursorPosition >= horizontalScrollPosition + availableLineLength())
horizontalScrollPosition++;
}
void addString(string s) {
foreach(dchar ch; s)
addChar(ch);
}
void deleteChar() {
if(cursorPosition == line.length)
return;
for(int i = cursorPosition; i < line.length - 1; i++)
line[i] = line[i + 1];
line = line[0 .. $-1];
line.assumeSafeAppend();
}
void deleteToEndOfLine() {
while(cursorPosition < line.length)
deleteChar();
}
int availableLineLength() {
return terminal.width - startOfLineX - cast(int) prompt.length - 1;
}
private int lastDrawLength = 0;
void redraw() {
terminal.moveTo(startOfLineX, startOfLineY);
auto lineLength = availableLineLength();
if(lineLength < 0)
throw new Exception("too narrow terminal to draw");
terminal.write(prompt);
auto towrite = line[horizontalScrollPosition .. $];
auto cursorPositionToDrawX = cursorPosition - horizontalScrollPosition;
auto cursorPositionToDrawY = 0;
if(towrite.length > lineLength) {
towrite = towrite[0 .. lineLength];
}
terminal.write(towrite);
lineLength -= towrite.length;
string suggestion;
if(lineLength >= 0) {
suggestion = ((cursorPosition == towrite.length) && autoSuggest) ? this.suggestion() : null;
if(suggestion.length) {
terminal.color(suggestionForeground, background);
terminal.write(suggestion);
terminal.color(regularForeground, background);
}
}
auto written = cast(int) (towrite.length + suggestion.length + prompt.length);
if(written < lastDrawLength)
foreach(i; written .. lastDrawLength)
terminal.write(" ");
lastDrawLength = written;
terminal.moveTo(startOfLineX + cursorPositionToDrawX + cast(int) prompt.length, startOfLineY + cursorPositionToDrawY);
}
void startGettingLine() {
cursorPosition = 0;
horizontalScrollPosition = 0;
justHitTab = false;
currentHistoryViewPosition = 0;
if(line.length) {
line = line[0 .. 0];
line.assumeSafeAppend();
}
updateCursorPosition();
terminal.showCursor();
lastDrawLength = availableLineLength();
redraw();
}
private void updateCursorPosition() {
terminal.flush();
version(Windows) {
CONSOLE_SCREEN_BUFFER_INFO info;
GetConsoleScreenBufferInfo(terminal.hConsole, &info);
startOfLineX = info.dwCursorPosition.X;
startOfLineY = info.dwCursorPosition.Y;
} else {
ubyte[128] hack2;
termios old;
ubyte[128] hack;
tcgetattr(terminal.fdIn, &old);
auto n = old;
n.c_lflag &= ~(ICANON | ECHO);
tcsetattr(terminal.fdIn, TCSANOW, &n);
scope(exit)
tcsetattr(terminal.fdIn, TCSANOW, &old);
terminal.writeStringRaw("\033[6n");
terminal.flush();
import core.sys.posix.unistd;
ubyte[16] buffer;
auto len = read(terminal.fdIn, buffer.ptr, buffer.length);
if(len <= 0)
throw new Exception("Couldn't get cursor position to initialize get line");
auto got = buffer[0 .. len];
if(got.length < 6)
throw new Exception("not enough cursor reply answer");
if(got[0] != '\033' || got[1] != '[' || got[$-1] != 'R')
throw new Exception("wrong answer for cursor position");
auto gots = cast(char[]) got[2 .. $-1];
import std.conv;
import std.string;
auto pieces = split(gots, ";");
if(pieces.length != 2) throw new Exception("wtf wrong answer on cursor position");
startOfLineX = to!int(pieces[1]) - 1;
startOfLineY = to!int(pieces[0]) - 1;
}
terminal._cursorX = startOfLineX;
terminal._cursorY = startOfLineY;
}
private bool justHitTab;
bool workOnLine(InputEvent e) {
switch(e.type) {
case InputEvent.Type.EndOfFileEvent:
justHitTab = false;
return false;
case InputEvent.Type.KeyboardEvent:
auto ev = e.keyboardEvent;
if(ev.pressed == false)
return true;
auto ch = ev.which;
switch(ch) {
case 4:
case '\r':
case '\n':
justHitTab = false;
return false;
case '\t':
auto relevantLineSection = line[0 .. cursorPosition];
auto possibilities = filterTabCompleteList(tabComplete(relevantLineSection));
import std.utf;
if(possibilities.length == 1) {
auto toFill = possibilities[0][codeLength!char(relevantLineSection) .. $];
if(toFill.length) {
addString(toFill);
redraw();
}
justHitTab = false;
} else {
if(justHitTab) {
justHitTab = false;
showTabCompleteList(possibilities);
} else {
justHitTab = true;
auto suggestion = this.suggestion(possibilities);
if(suggestion.length) {
addString(suggestion);
redraw();
}
}
}
break;
case '\b':
justHitTab = false;
if(cursorPosition) {
cursorPosition--;
for(int i = cursorPosition; i < line.length - 1; i++)
line[i] = line[i + 1];
line = line[0 .. $ - 1];
line.assumeSafeAppend();
if(!multiLineMode) {
if(horizontalScrollPosition > cursorPosition - 1)
horizontalScrollPosition = cursorPosition - 1 - availableLineLength();
if(horizontalScrollPosition < 0)
horizontalScrollPosition = 0;
}
redraw();
}
break;
case KeyboardEvent.Key.LeftArrow:
justHitTab = false;
if(cursorPosition)
cursorPosition--;
if(!multiLineMode) {
if(cursorPosition < horizontalScrollPosition)
horizontalScrollPosition--;
}
redraw();
break;
case KeyboardEvent.Key.RightArrow:
justHitTab = false;
if(cursorPosition < line.length)
cursorPosition++;
if(!multiLineMode) {
if(cursorPosition >= horizontalScrollPosition + availableLineLength())
horizontalScrollPosition++;
}
redraw();
break;
case KeyboardEvent.Key.UpArrow:
justHitTab = false;
loadFromHistory(currentHistoryViewPosition + 1);
redraw();
break;
case KeyboardEvent.Key.DownArrow:
justHitTab = false;
loadFromHistory(currentHistoryViewPosition - 1);
redraw();
break;
case KeyboardEvent.Key.PageUp:
justHitTab = false;
loadFromHistory(cast(int) history.length);
redraw();
break;
case KeyboardEvent.Key.PageDown:
justHitTab = false;
loadFromHistory(0);
redraw();
break;
case 1:
case KeyboardEvent.Key.Home:
justHitTab = false;
cursorPosition = 0;
horizontalScrollPosition = 0;
redraw();
break;
case 5:
case KeyboardEvent.Key.End:
justHitTab = false;
cursorPosition = cast(int) line.length;
scrollToEnd();
redraw();
break;
case KeyboardEvent.Key.Insert:
justHitTab = false;
insertMode = !insertMode;
break;
case KeyboardEvent.Key.Delete:
justHitTab = false;
if(ev.modifierState & ModifierState.control)
deleteToEndOfLine();
else
deleteChar();
redraw();
break;
case 11:
justHitTab = false;
deleteToEndOfLine();
redraw();
break;
default:
justHitTab = false;
if(e.keyboardEvent.isCharacter)
addChar(ch);
redraw();
}
break;
case InputEvent.Type.PasteEvent:
justHitTab = false;
addString(e.pasteEvent.pastedText);
redraw();
break;
case InputEvent.Type.MouseEvent:
auto me = e.mouseEvent;
if(me.eventType == MouseEvent.Type.Pressed) {
if(me.buttons & MouseEvent.Button.Left) {
if(me.y == startOfLineY) {
int p = me.x - startOfLineX - cast(int) prompt.length + horizontalScrollPosition;
if(p >= 0 && p < line.length) {
justHitTab = false;
cursorPosition = p;
redraw();
}
}
}
}
break;
case InputEvent.Type.SizeChangedEvent:
break;
case InputEvent.Type.UserInterruptionEvent:
throw new UserInterruptionException();
case InputEvent.Type.HangupEvent:
throw new HangupException();
default:
}
return true;
}
string finishGettingLine() {
import std.conv;
auto f = to!string(line);
auto history = historyFilter(f);
if(history !is null)
this.history ~= history;
return f;
}
}
mixin template LineGetterConstructors() {
this(Terminal* tty, string historyFilename = null) {
super(tty, historyFilename);
}
}
class FileLineGetter : LineGetter {
mixin LineGetterConstructors;
string searchDirectory = ".";
override protected string[] tabComplete(in dchar[] candidate) {
import std.file, std.conv, std.algorithm, std.string;
const(dchar)[] soFar = candidate;
auto idx = candidate.lastIndexOf(" ");
if(idx != -1)
soFar = candidate[idx + 1 .. $];
string[] list;
foreach(string name; dirEntries(searchDirectory, SpanMode.breadth)) {
if(startsWith(name[2..$], soFar))
list ~= text(candidate, name[searchDirectory.length + 1 + soFar.length .. $]);
else
if(startsWith(name, soFar))
list ~= text(candidate, name[soFar.length .. $]);
}
return list;
}
}
version(Windows) {
enum CSIDL_APPDATA = 26;
extern(Windows) HRESULT SHGetFolderPathA(HWND, int, HANDLE, DWORD, LPSTR);
}
struct ScrollbackBuffer {
bool demandsAttention;
this(string name) {
this.name = name;
}
void write(T...)(T t) {
import std.conv : text;
addComponent(text(t), foreground_, background_, null);
}
void writeln(T...)(T t) {
write(t, "\n");
}
void writef(T...)(string fmt, T t) {
import std.format: format;
write(format(fmt, t));
}
void writefln(T...)(string fmt, T t) {
writef(fmt, t, "\n");
}
void clear() {
lines = null;
clickRegions = null;
scrollbackPosition = 0;
}
int foreground_ = Color.DEFAULT, background_ = Color.DEFAULT;
void color(int foreground, int background) {
this.foreground_ = foreground;
this.background_ = background;
}
void addComponent(string text, int foreground, int background, bool delegate() onclick) {
if(lines.length == 0) {
addLine();
}
bool first = true;
import std.algorithm;
foreach(t; splitter(text, "\n")) {
if(!first) addLine();
first = false;
lines[$-1].components ~= LineComponent(t, foreground, background, onclick);
}
}
void addLine() {
lines ~= Line();
if(scrollbackPosition)
scrollbackPosition++;
}
void addLine(string line) {
lines ~= Line([LineComponent(line)]);
if(scrollbackPosition)
scrollbackPosition++;
}
void scrollUp(int lines = 1) {
scrollbackPosition += lines;
}
void scrollDown(int lines = 1) {
scrollbackPosition -= lines;
if(scrollbackPosition < 0)
scrollbackPosition = 0;
}
void scrollToBottom() {
scrollbackPosition = 0;
}
void scrollToTop(int width, int height) {
scrollbackPosition = scrollTopPosition(width, height);
}
struct LineComponent {
string text;
bool isRgb;
union {
int color;
RGB colorRgb;
}
union {
int background;
RGB backgroundRgb;
}
bool delegate() onclick;
this(string text, int color = Color.DEFAULT, int background = Color.DEFAULT, bool delegate() onclick = null) {
this.text = text;
this.color = color;
this.background = background;
this.onclick = onclick;
this.isRgb = false;
}
this(string text, RGB colorRgb, RGB backgroundRgb = RGB(0, 0, 0), bool delegate() onclick = null) {
this.text = text;
this.colorRgb = colorRgb;
this.backgroundRgb = backgroundRgb;
this.onclick = onclick;
this.isRgb = true;
}
}
struct Line {
LineComponent[] components;
int length() {
int l = 0;
foreach(c; components)
l += c.text.length;
return l;
}
}
Line[] lines;
string name;
int x, y, width, height;
int scrollbackPosition;
int scrollTopPosition(int width, int height) {
int lineCount;
foreach_reverse(line; lines) {
int written = 0;
comp_loop: foreach(cidx, component; line.components) {
auto towrite = component.text;
foreach(idx, dchar ch; towrite) {
if(written >= width) {
lineCount++;
written = 0;
}
if(ch == '\t')
written += 8;
else
written++;
}
}
lineCount++;
}
return lineCount - height;
}
void drawInto(Terminal* terminal, in int x = 0, in int y = 0, int width = 0, int height = 0) {
if(lines.length == 0)
return;
if(width == 0)
width = terminal.width;
if(height == 0)
height = terminal.height;
this.x = x;
this.y = y;
this.width = width;
this.height = height;
int remaining = height + scrollbackPosition;
int start = cast(int) lines.length;
int howMany = 0;
bool firstPartial = false;
static struct Idx {
size_t cidx;
size_t idx;
}
Idx firstPartialStartIndex;
clickRegions.length = 0;
clickRegions.assumeSafeAppend();
foreach_reverse(line; lines) {
int written = 0;
int brokenLineCount;
Idx[16] lineBreaksBuffer;
Idx[] lineBreaks = lineBreaksBuffer[];
comp_loop: foreach(cidx, component; line.components) {
auto towrite = component.text;
foreach(idx, dchar ch; towrite) {
if(written >= width) {
if(brokenLineCount == lineBreaks.length)
lineBreaks ~= Idx(cidx, idx);
else
lineBreaks[brokenLineCount] = Idx(cidx, idx);
brokenLineCount++;
written = 0;
}
if(ch == '\t')
written += 8;
else
written++;
}
}
lineBreaks = lineBreaks[0 .. brokenLineCount];
foreach_reverse(lineBreak; lineBreaks) {
if(remaining == 1) {
firstPartial = true;
firstPartialStartIndex = lineBreak;
break;
} else {
remaining--;
}
if(remaining <= 0)
break;
}
remaining--;
start--;
howMany++;
if(remaining <= 0)
break;
}
int linePos = remaining;
foreach(idx, line; lines[start .. start + howMany]) {
int written = 0;
if(linePos < 0) {
linePos++;
continue;
}
terminal.moveTo(x, y + ((linePos >= 0) ? linePos : 0));
auto todo = line.components;
if(firstPartial) {
todo = todo[firstPartialStartIndex.cidx .. $];
}
foreach(ref component; todo) {
if(component.isRgb)
terminal.setTrueColor(component.colorRgb, component.backgroundRgb);
else
terminal.color(component.color, component.background);
auto towrite = component.text;
again:
if(linePos >= height)
break;
if(firstPartial) {
towrite = towrite[firstPartialStartIndex.idx .. $];
firstPartial = false;
}
foreach(idx, dchar ch; towrite) {
if(written >= width) {
clickRegions ~= ClickRegion(&component, terminal.cursorX, terminal.cursorY, written);
terminal.write(towrite[0 .. idx]);
towrite = towrite[idx .. $];
linePos++;
written = 0;
terminal.moveTo(x, y + linePos);
goto again;
}
if(ch == '\t')
written += 8;
else
written++;
}
if(towrite.length) {
clickRegions ~= ClickRegion(&component, terminal.cursorX, terminal.cursorY, written);
terminal.write(towrite);
}
}
if(written < width) {
terminal.color(Color.DEFAULT, Color.DEFAULT);
foreach(i; written .. width)
terminal.write(" ");
}
linePos++;
if(linePos >= height)
break;
}
if(linePos < height) {
terminal.color(Color.DEFAULT, Color.DEFAULT);
foreach(i; linePos .. height) {
if(i >= 0 && i < height) {
terminal.moveTo(x, y + i);
foreach(w; 0 .. width)
terminal.write(" ");
}
}
}
}
private struct ClickRegion {
LineComponent* component;
int xStart;
int yStart;
int length;
}
private ClickRegion[] clickRegions;
bool handleEvent(InputEvent e) {
final switch(e.type) {
case InputEvent.Type.KeyboardEvent:
auto ev = e.keyboardEvent;
demandsAttention = false;
switch(ev.which) {
case KeyboardEvent.Key.UpArrow:
scrollUp();
return true;
case KeyboardEvent.Key.DownArrow:
scrollDown();
return true;
case KeyboardEvent.Key.PageUp:
scrollUp(height);
return true;
case KeyboardEvent.Key.PageDown:
scrollDown(height);
return true;
default:
}
break;
case InputEvent.Type.MouseEvent:
auto ev = e.mouseEvent;
if(ev.x >= x && ev.x < x + width && ev.y >= y && ev.y < y + height) {
demandsAttention = false;
auto mx = ev.x - x;
auto my = ev.y - y;
if(ev.eventType == MouseEvent.Type.Pressed) {
if(ev.buttons & MouseEvent.Button.Left) {
foreach(region; clickRegions)
if(ev.x >= region.xStart && ev.x < region.xStart + region.length && ev.y == region.yStart)
if(region.component.onclick !is null)
return region.component.onclick();
}
if(ev.buttons & MouseEvent.Button.ScrollUp) {
scrollUp();
return true;
}
if(ev.buttons & MouseEvent.Button.ScrollDown) {
scrollDown();
return true;
}
}
} else {
}
break;
case InputEvent.Type.SizeChangedEvent:
return true;
case InputEvent.Type.UserInterruptionEvent:
throw new UserInterruptionException();
case InputEvent.Type.HangupEvent:
throw new HangupException();
case InputEvent.Type.EndOfFileEvent:
break;
case InputEvent.Type.CharacterEvent:
case InputEvent.Type.NonCharacterKeyEvent:
break;
case InputEvent.Type.CustomEvent:
case InputEvent.Type.PasteEvent:
break;
}
return false;
}
}
class UserInterruptionException : Exception {
this() { super("Ctrl+C"); }
}
class HangupException : Exception {
this() { super("Hup"); }
}
ubyte colorToXTermPaletteIndex(RGB color) {
if(color.r == color.g && color.g == color.b) {
if(color.r == 0) return 0;
if(color.r >= 248) return 15;
return cast(ubyte) (232 + ((color.r - 8) / 10));
}
auto r = (cast(int) color.r - 35) / 40;
auto g = (cast(int) color.g - 35) / 40;
auto b = (cast(int) color.b - 35) / 40;
return cast(ubyte) (16 + b + g*6 + r*36);
}
struct RGB {
ubyte r;
ubyte g;
ubyte b;
private ubyte a = 255;
}
RGB xtermPaletteIndexToColor(int paletteIdx) {
RGB color;
if(paletteIdx < 16) {
if(paletteIdx == 7)
return RGB(0xc0, 0xc0, 0xc0);
else if(paletteIdx == 8)
return RGB(0x80, 0x80, 0x80);
color.r = (paletteIdx & 0b001) ? ((paletteIdx & 0b1000) ? 0xff : 0x80) : 0x00;
color.g = (paletteIdx & 0b010) ? ((paletteIdx & 0b1000) ? 0xff : 0x80) : 0x00;
color.b = (paletteIdx & 0b100) ? ((paletteIdx & 0b1000) ? 0xff : 0x80) : 0x00;
} else if(paletteIdx < 232) {
color.r = cast(ubyte) ((paletteIdx - 16) / 36 * 40 + 55);
color.g = cast(ubyte) (((paletteIdx - 16) % 36) / 6 * 40 + 55);
color.b = cast(ubyte) ((paletteIdx - 16) % 6 * 40 + 55);
if(color.r == 55) color.r = 0;
if(color.g == 55) color.g = 0;
if(color.b == 55) color.b = 0;
} else {
color.r = cast(ubyte) (8 + (paletteIdx - 232) * 10);
color.g = color.r;
color.b = color.g;
}
return color;
}
int approximate16Color(RGB color) {
int c;
c |= color.r > 64 ? RED_BIT : 0;
c |= color.g > 64 ? GREEN_BIT : 0;
c |= color.b > 64 ? BLUE_BIT : 0;
c |= (((color.r + color.g + color.b) / 3) > 80) ? Bright : 0;
return c;
}