Developer
<?php
/**
* Hoa
*
*
* @license
*
* New BSD License
*
* Copyright © 2007-2017, Hoa community. 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.
* * Neither the name of the Hoa nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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 HOLDERS AND 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.
*/
namespace Psy\Readline\Hoa;
/**
* Class \Hoa\Console\Readline.
*
* Read, edit, bind… a line from the input.
*/
class Readline
{
/**
* State: continue to read.
*/
const STATE_CONTINUE = 1;
/**
* State: stop to read.
*/
const STATE_BREAK = 2;
/**
* State: no output the current buffer.
*/
const STATE_NO_ECHO = 4;
/**
* Current editing line.
*/
protected $_line = null;
/**
* Current editing line seek.
*/
protected $_lineCurrent = 0;
/**
* Current editing line length.
*/
protected $_lineLength = 0;
/**
* Current buffer (most of the time, a char).
*/
protected $_buffer = null;
/**
* Mapping.
*/
protected $_mapping = [];
/**
* History.
*/
protected $_history = [];
/**
* History current position.
*/
protected $_historyCurrent = 0;
/**
* History size.
*/
protected $_historySize = 0;
/**
* Prefix.
*/
protected $_prefix = null;
/**
* Autocompleter.
*/
protected $_autocompleter = null;
/**
* Initialize the readline editor.
*/
public function __construct()
{
if (\defined('PHP_WINDOWS_VERSION_PLATFORM')) {
return;
}
$this->_mapping["\033[A"] = [$this, '_bindArrowUp'];
$this->_mapping["\033[B"] = [$this, '_bindArrowDown'];
$this->_mapping["\033[C"] = [$this, '_bindArrowRight'];
$this->_mapping["\033[D"] = [$this, '_bindArrowLeft'];
$this->_mapping["\001"] = [$this, '_bindControlA'];
$this->_mapping["\002"] = [$this, '_bindControlB'];
$this->_mapping["\005"] = [$this, '_bindControlE'];
$this->_mapping["\006"] = [$this, '_bindControlF'];
$this->_mapping["\010"] =
$this->_mapping["\177"] = [$this, '_bindBackspace'];
$this->_mapping["\027"] = [$this, '_bindControlW'];
$this->_mapping["\n"] = [$this, '_bindNewline'];
$this->_mapping["\t"] = [$this, '_bindTab'];
return;
}
/**
* Read a line from the input.
*/
public function readLine(?string $prefix = null)
{
$input = Console::getInput();
if (true === $input->eof()) {
return false;
}
$direct = Console::isDirect($input->getStream()->getStream());
$output = Console::getOutput();
if (false === $direct || \defined('PHP_WINDOWS_VERSION_PLATFORM')) {
$out = $input->readLine();
if (false === $out) {
return false;
}
$out = \substr($out, 0, -1);
if (true === $direct) {
$output->writeAll($prefix);
} else {
$output->writeAll($prefix.$out."\n");
}
return $out;
}
$this->resetLine();
$this->setPrefix($prefix);
$read = [$input->getStream()->getStream()];
$write = $except = [];
$output->writeAll($prefix);
while (true) {
@\stream_select($read, $write, $except, 30, 0);
if (empty($read)) {
$read = [$input->getStream()->getStream()];
continue;
}
$char = $this->_read();
$this->_buffer = $char;
$return = $this->_readLine($char);
if (0 === ($return & self::STATE_NO_ECHO)) {
$output->writeAll($this->_buffer);
}
if (0 !== ($return & self::STATE_BREAK)) {
break;
}
}
return $this->getLine();
}
/**
* Readline core.
*/
public function _readLine(string $char)
{
if (isset($this->_mapping[$char]) &&
\is_callable($this->_mapping[$char])) {
$mapping = $this->_mapping[$char];
return $mapping($this);
}
if (isset($this->_mapping[$char])) {
$this->_buffer = $this->_mapping[$char];
} elseif (false === Ustring::isCharPrintable($char)) {
ConsoleCursor::bip();
return static::STATE_CONTINUE | static::STATE_NO_ECHO;
}
if ($this->getLineLength() === $this->getLineCurrent()) {
$this->appendLine($this->_buffer);
return static::STATE_CONTINUE;
}
$this->insertLine($this->_buffer);
$tail = \mb_substr(
$this->getLine(),
$this->getLineCurrent() - 1
);
$this->_buffer = "\033[K".$tail.\str_repeat(
"\033[D",
\mb_strlen($tail) - 1
);
return static::STATE_CONTINUE;
}
/**
* Add mappings.
*/
public function addMappings(array $mappings)
{
foreach ($mappings as $key => $mapping) {
$this->addMapping($key, $mapping);
}
}
/**
* Add a mapping.
* Supported key:
* • \e[… for \033[…;
* • \C-… for Ctrl-…;
* • abc for a simple mapping.
* A mapping is a callable that has only one parameter of type
* Hoa\Console\Readline and that returns a self::STATE_* constant.
*/
public function addMapping(string $key, $mapping)
{
if ('\e[' === \substr($key, 0, 3)) {
$this->_mapping["\033[".\substr($key, 3)] = $mapping;
} elseif ('\C-' === \substr($key, 0, 3)) {
$_key = \ord(\strtolower(\substr($key, 3))) - 96;
$this->_mapping[\chr($_key)] = $mapping;
} else {
$this->_mapping[$key] = $mapping;
}
}
/**
* Add an entry in the history.
*/
public function addHistory(?string $line = null)
{
if (empty($line)) {
return;
}
$this->_history[] = $line;
$this->_historyCurrent = $this->_historySize++;
}
/**
* Clear history.
*/
public function clearHistory()
{
unset($this->_history);
$this->_history = [];
$this->_historyCurrent = 0;
$this->_historySize = 1;
}
/**
* Get an entry in the history.
*/
public function getHistory(?int $i = null)
{
if (null === $i) {
$i = $this->_historyCurrent;
}
if (!isset($this->_history[$i])) {
return null;
}
return $this->_history[$i];
}
/**
* Go backward in the history.
*/
public function previousHistory()
{
if (0 >= $this->_historyCurrent) {
return $this->getHistory(0);
}
return $this->getHistory($this->_historyCurrent--);
}
/**
* Go forward in the history.
*/
public function nextHistory()
{
if ($this->_historyCurrent + 1 >= $this->_historySize) {
return $this->getLine();
}
return $this->getHistory(++$this->_historyCurrent);
}
/**
* Get current line.
*/
public function getLine()
{
return $this->_line;
}
/**
* Append to current line.
*/
public function appendLine(string $append)
{
$this->_line .= $append;
$this->_lineLength = \mb_strlen($this->_line);
$this->_lineCurrent = $this->_lineLength;
}
/**
* Insert into current line at the current seek.
*/
public function insertLine(string $insert)
{
if ($this->_lineLength === $this->_lineCurrent) {
return $this->appendLine($insert);
}
$this->_line = \mb_substr($this->_line, 0, $this->_lineCurrent).
$insert.
\mb_substr($this->_line, $this->_lineCurrent);
$this->_lineLength = \mb_strlen($this->_line);
$this->_lineCurrent += \mb_strlen($insert);
return;
}
/**
* Reset current line.
*/
protected function resetLine()
{
$this->_line = null;
$this->_lineCurrent = 0;
$this->_lineLength = 0;
}
/**
* Get current line seek.
*/
public function getLineCurrent(): int
{
return $this->_lineCurrent;
}
/**
* Get current line length.
*
* @return int
*/
public function getLineLength(): int
{
return $this->_lineLength;
}
/**
* Set prefix.
*/
public function setPrefix(string $prefix)
{
$this->_prefix = $prefix;
}
/**
* Get prefix.
*/
public function getPrefix()
{
return $this->_prefix;
}
/**
* Get buffer. Not for user.
*/
public function getBuffer()
{
return $this->_buffer;
}
/**
* Set an autocompleter.
*/
public function setAutocompleter(Autocompleter $autocompleter)
{
$old = $this->_autocompleter;
$this->_autocompleter = $autocompleter;
return $old;
}
/**
* Get the autocompleter.
*
* @return ?Autocompleter
*/
public function getAutocompleter()
{
return $this->_autocompleter;
}
/**
* Read on input. Not for user.
*/
public function _read(int $length = 512): string
{
return Console::getInput()->read($length);
}
/**
* Set current line. Not for user.
*/
public function setLine(string $line)
{
$this->_line = $line;
$this->_lineLength = \mb_strlen($this->_line ?: '');
$this->_lineCurrent = $this->_lineLength;
}
/**
* Set current line seek. Not for user.
*/
public function setLineCurrent(int $current)
{
$this->_lineCurrent = $current;
}
/**
* Set line length. Not for user.
*/
public function setLineLength(int $length)
{
$this->_lineLength = $length;
}
/**
* Set buffer. Not for user.
*/
public function setBuffer(string $buffer)
{
$this->_buffer = $buffer;
}
/**
* Up arrow binding.
* Go backward in the history.
*/
public function _bindArrowUp(self $self): int
{
if (0 === (static::STATE_CONTINUE & static::STATE_NO_ECHO)) {
ConsoleCursor::clear('↔');
Console::getOutput()->writeAll($self->getPrefix());
}
$buffer = $self->previousHistory() ?? '';
$self->setBuffer($buffer);
$self->setLine($buffer);
return static::STATE_CONTINUE;
}
/**
* Down arrow binding.
* Go forward in the history.
*/
public function _bindArrowDown(self $self): int
{
if (0 === (static::STATE_CONTINUE & static::STATE_NO_ECHO)) {
ConsoleCursor::clear('↔');
Console::getOutput()->writeAll($self->getPrefix());
}
$self->setBuffer($buffer = $self->nextHistory());
$self->setLine($buffer);
return static::STATE_CONTINUE;
}
/**
* Right arrow binding.
* Move cursor to the right.
*/
public function _bindArrowRight(self $self): int
{
if ($self->getLineLength() > $self->getLineCurrent()) {
if (0 === (static::STATE_CONTINUE & static::STATE_NO_ECHO)) {
ConsoleCursor::move('→');
}
$self->setLineCurrent($self->getLineCurrent() + 1);
}
$self->setBuffer('');
return static::STATE_CONTINUE;
}
/**
* Left arrow binding.
* Move cursor to the left.
*/
public function _bindArrowLeft(self $self): int
{
if (0 < $self->getLineCurrent()) {
if (0 === (static::STATE_CONTINUE & static::STATE_NO_ECHO)) {
ConsoleCursor::move('←');
}
$self->setLineCurrent($self->getLineCurrent() - 1);
}
$self->setBuffer('');
return static::STATE_CONTINUE;
}
/**
* Backspace and Control-H binding.
* Delete the first character at the right of the cursor.
*/
public function _bindBackspace(self $self): int
{
$buffer = '';
if (0 < $self->getLineCurrent()) {
if (0 === (static::STATE_CONTINUE & static::STATE_NO_ECHO)) {
ConsoleCursor::move('←');
ConsoleCursor::clear('→');
}
if ($self->getLineLength() === $current = $self->getLineCurrent()) {
$self->setLine(\mb_substr($self->getLine(), 0, -1));
} else {
$line = $self->getLine();
$current = $self->getLineCurrent();
$tail = \mb_substr($line, $current);
$buffer = $tail.\str_repeat("\033[D", \mb_strlen($tail));
$self->setLine(\mb_substr($line, 0, $current - 1).$tail);
$self->setLineCurrent($current - 1);
}
}
$self->setBuffer($buffer);
return static::STATE_CONTINUE;
}
/**
* Control-A binding.
* Move cursor to beginning of line.
*/
public function _bindControlA(self $self): int
{
for ($i = $self->getLineCurrent() - 1; 0 <= $i; --$i) {
$self->_bindArrowLeft($self);
}
return static::STATE_CONTINUE;
}
/**
* Control-B binding.
* Move cursor backward one word.
*/
public function _bindControlB(self $self): int
{
$current = $self->getLineCurrent();
if (0 === $current) {
return static::STATE_CONTINUE;
}
$words = \preg_split(
'#\b#u',
$self->getLine(),
-1,
\PREG_SPLIT_OFFSET_CAPTURE | \PREG_SPLIT_NO_EMPTY
);
for (
$i = 0, $max = \count($words) - 1;
$i < $max && $words[$i + 1][1] < $current;
++$i
) {
}
for ($j = $words[$i][1] + 1; $current >= $j; ++$j) {
$self->_bindArrowLeft($self);
}
return static::STATE_CONTINUE;
}
/**
* Control-E binding.
* Move cursor to end of line.
*/
public function _bindControlE(self $self): int
{
for (
$i = $self->getLineCurrent(), $max = $self->getLineLength();
$i < $max;
++$i
) {
$self->_bindArrowRight($self);
}
return static::STATE_CONTINUE;
}
/**
* Control-F binding.
* Move cursor forward one word.
*/
public function _bindControlF(self $self): int
{
$current = $self->getLineCurrent();
if ($self->getLineLength() === $current) {
return static::STATE_CONTINUE;
}
$words = \preg_split(
'#\b#u',
$self->getLine(),
-1,
\PREG_SPLIT_OFFSET_CAPTURE | \PREG_SPLIT_NO_EMPTY
);
for (
$i = 0, $max = \count($words) - 1;
$i < $max && $words[$i][1] < $current;
++$i
) {
}
if (!isset($words[$i + 1])) {
$words[$i + 1] = [1 => $self->getLineLength()];
}
for ($j = $words[$i + 1][1]; $j > $current; --$j) {
$self->_bindArrowRight($self);
}
return static::STATE_CONTINUE;
}
/**
* Control-W binding.
* Delete first backward word.
*/
public function _bindControlW(self $self): int
{
$current = $self->getLineCurrent();
if (0 === $current) {
return static::STATE_CONTINUE;
}
$words = \preg_split(
'#\b#u',
$self->getLine(),
-1,
\PREG_SPLIT_OFFSET_CAPTURE | \PREG_SPLIT_NO_EMPTY
);
for (
$i = 0, $max = \count($words) - 1;
$i < $max && $words[$i + 1][1] < $current;
++$i
) {
}
for ($j = $words[$i][1] + 1; $current >= $j; ++$j) {
$self->_bindBackspace($self);
}
return static::STATE_CONTINUE;
}
/**
* Newline binding.
*/
public function _bindNewline(self $self): int
{
$self->addHistory($self->getLine());
return static::STATE_BREAK;
}
/**
* Tab binding.
*/
public function _bindTab(self $self): int
{
$output = Console::getOutput();
$autocompleter = $self->getAutocompleter();
$state = static::STATE_CONTINUE | static::STATE_NO_ECHO;
if (null === $autocompleter) {
return $state;
}
$current = $self->getLineCurrent();
$line = $self->getLine();
if (0 === $current) {
return $state;
}
$matches = \preg_match_all(
'#'.$autocompleter->getWordDefinition().'$#u',
\mb_substr($line, 0, $current),
$words
);
if (0 === $matches) {
return $state;
}
$word = $words[0][0];
if ('' === \trim($word)) {
return $state;
}
$solution = $autocompleter->complete($word);
$length = \mb_strlen($word);
if (null === $solution) {
return $state;
}
if (\is_array($solution)) {
$_solution = $solution;
$count = \count($_solution) - 1;
$cWidth = 0;
$window = ConsoleWindow::getSize();
$wWidth = $window['x'];
$cursor = ConsoleCursor::getPosition();
\array_walk($_solution, function (&$value) use (&$cWidth) {
$handle = \mb_strlen($value);
if ($handle > $cWidth) {
$cWidth = $handle;
}
return;
});
\array_walk($_solution, function (&$value) use (&$cWidth) {
$handle = \mb_strlen($value);
if ($handle >= $cWidth) {
return;
}
$value .= \str_repeat(' ', $cWidth - $handle);
return;
});
$mColumns = (int) \floor($wWidth / ($cWidth + 2));
$mLines = (int) \ceil(($count + 1) / $mColumns);
--$mColumns;
$i = 0;
if (0 > $window['y'] - $cursor['y'] - $mLines) {
ConsoleWindow::scroll('↑', $mLines);
ConsoleCursor::move('↑', $mLines);
}
ConsoleCursor::save();
ConsoleCursor::hide();
ConsoleCursor::move('↓ LEFT');
ConsoleCursor::clear('↓');
foreach ($_solution as $j => $s) {
$output->writeAll("\033[0m".$s."\033[0m");
if ($i++ < $mColumns) {
$output->writeAll(' ');
} else {
$i = 0;
if (isset($_solution[$j + 1])) {
$output->writeAll("\n");
}
}
}
ConsoleCursor::restore();
ConsoleCursor::show();
++$mColumns;
$input = Console::getInput();
$read = [$input->getStream()->getStream()];
$write = $except = [];
$mColumn = -1;
$mLine = -1;
$coord = -1;
$unselect = function () use (
&$mColumn,
&$mLine,
&$coord,
&$_solution,
&$cWidth,
$output
) {
ConsoleCursor::save();
ConsoleCursor::hide();
ConsoleCursor::move('↓ LEFT');
ConsoleCursor::move('→', $mColumn * ($cWidth + 2));
ConsoleCursor::move('↓', $mLine);
$output->writeAll("\033[0m".$_solution[$coord]."\033[0m");
ConsoleCursor::restore();
ConsoleCursor::show();
return;
};
$select = function () use (
&$mColumn,
&$mLine,
&$coord,
&$_solution,
&$cWidth,
$output
) {
ConsoleCursor::save();
ConsoleCursor::hide();
ConsoleCursor::move('↓ LEFT');
ConsoleCursor::move('→', $mColumn * ($cWidth + 2));
ConsoleCursor::move('↓', $mLine);
$output->writeAll("\033[7m".$_solution[$coord]."\033[0m");
ConsoleCursor::restore();
ConsoleCursor::show();
return;
};
$init = function () use (
&$mColumn,
&$mLine,
&$coord,
&$select
) {
$mColumn = 0;
$mLine = 0;
$coord = 0;
$select();
return;
};
while (true) {
@\stream_select($read, $write, $except, 30, 0);
if (empty($read)) {
$read = [$input->getStream()->getStream()];
continue;
}
switch ($char = $self->_read()) {
case "\033[A":
if (-1 === $mColumn && -1 === $mLine) {
$init();
break;
}
$unselect();
$coord = \max(0, $coord - $mColumns);
$mLine = (int) \floor($coord / $mColumns);
$mColumn = $coord % $mColumns;
$select();
break;
case "\033[B":
if (-1 === $mColumn && -1 === $mLine) {
$init();
break;
}
$unselect();
$coord = \min($count, $coord + $mColumns);
$mLine = (int) \floor($coord / $mColumns);
$mColumn = $coord % $mColumns;
$select();
break;
case "\t":
case "\033[C":
if (-1 === $mColumn && -1 === $mLine) {
$init();
break;
}
$unselect();
$coord = \min($count, $coord + 1);
$mLine = (int) \floor($coord / $mColumns);
$mColumn = $coord % $mColumns;
$select();
break;
case "\033[D":
if (-1 === $mColumn && -1 === $mLine) {
$init();
break;
}
$unselect();
$coord = \max(0, $coord - 1);
$mLine = (int) \floor($coord / $mColumns);
$mColumn = $coord % $mColumns;
$select();
break;
case "\n":
if (-1 !== $mColumn && -1 !== $mLine) {
$tail = \mb_substr($line, $current);
$current -= $length;
$self->setLine(
\mb_substr($line, 0, $current).
$solution[$coord].
$tail
);
$self->setLineCurrent(
$current + \mb_strlen($solution[$coord])
);
ConsoleCursor::move('←', $length);
$output->writeAll($solution[$coord]);
ConsoleCursor::clear('→');
$output->writeAll($tail);
ConsoleCursor::move('←', \mb_strlen($tail));
}
// no break
default:
$mColumn = -1;
$mLine = -1;
$coord = -1;
ConsoleCursor::save();
ConsoleCursor::move('↓ LEFT');
ConsoleCursor::clear('↓');
ConsoleCursor::restore();
if ("\033" !== $char && "\n" !== $char) {
$self->setBuffer($char);
return $self->_readLine($char);
}
break 2;
}
}
return $state;
}
$tail = \mb_substr($line, $current);
$current -= $length;
$self->setLine(
\mb_substr($line, 0, $current).
$solution.
$tail
);
$self->setLineCurrent(
$current + \mb_strlen($solution)
);
ConsoleCursor::move('←', $length);
$output->writeAll($solution);
ConsoleCursor::clear('→');
$output->writeAll($tail);
ConsoleCursor::move('←', \mb_strlen($tail));
return $state;
}
}
/*
* Advanced interaction.
*/
Console::advancedInteraction();
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