<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Text\Figlet;
use Traversable;
use Zend\Stdlib\ArrayUtils;
use Zend\Stdlib\StringUtils;
/**
* Zend\Text\Figlet is a PHP implementation of FIGlet
*/
class Figlet
{
/**
* Smush2 layout modes
*/
const SM_EQUAL = 0x01;
const SM_LOWLINE = 0x02;
const SM_HIERARCHY = 0x04;
const SM_PAIR = 0x08;
const SM_BIGX = 0x10;
const SM_HARDBLANK = 0x20;
const SM_KERN = 0x40;
const SM_SMUSH = 0x80;
/**
* Smush mode override modes
*/
const SMO_NO = 0;
const SMO_YES = 1;
const SMO_FORCE = 2;
/**
* Justifications
*/
const JUSTIFICATION_LEFT = 0;
const JUSTIFICATION_CENTER = 1;
const JUSTIFICATION_RIGHT = 2;
/**
* Write directions
*/
const DIRECTION_LEFT_TO_RIGHT = 0;
const DIRECTION_RIGHT_TO_LEFT = 1;
/**
* Magic fontfile number
*/
const FONTFILE_MAGIC_NUMBER = 'flf2';
/**
* Array containing all characters of the current font
*
* @var array
*/
protected $charList = array();
/**
* Indicates if a font was loaded yet
*
* @var bool
*/
protected $fontLoaded = false;
/**
* Latin-1 codes for German letters, respectively:
*
* LATIN CAPITAL LETTER A WITH DIAERESIS = A-umlaut
* LATIN CAPITAL LETTER O WITH DIAERESIS = O-umlaut
* LATIN CAPITAL LETTER U WITH DIAERESIS = U-umlaut
* LATIN SMALL LETTER A WITH DIAERESIS = a-umlaut
* LATIN SMALL LETTER O WITH DIAERESIS = o-umlaut
* LATIN SMALL LETTER U WITH DIAERESIS = u-umlaut
* LATIN SMALL LETTER SHARP S = ess-zed
*
* @var array
*/
protected $germanChars = array(196, 214, 220, 228, 246, 252, 223);
/**
* Output width, defaults to 80.
*
* @var int
*/
protected $outputWidth = 80;
/**
* Hard blank character
*
* @var string
*/
protected $hardBlank;
/**
* Height of the characters
*
* @var int
*/
protected $charHeight;
/**
* Max length of any character
*
* @var int
*/
protected $maxLength;
/**
* Smush mode
*
* @var int
*/
protected $smushMode = 0;
/**
* Smush defined by the font
*
* @var int
*/
protected $fontSmush = 0;
/**
* Smush defined by the user
*
* @var int
*/
protected $userSmush = 0;
/**
* Whether to handle paragraphs || not
*
* @var bool
*/
protected $handleParagraphs = false;
/**
* Justification for the text, according to $outputWidth
*
* For using font default, this parameter should be null, else one of
* the values of Zend\Text\Figlet::JUSTIFICATION_*
*
* @var int
*/
protected $justification = null;
/**
* Direction of text-writing, namely right to left
*
* For using font default, this parameter should be null, else one of
* the values of Zend\Text\Figlet::DIRECTION_*
*
* @var int
*/
protected $rightToLeft = null;
/**
* Override font file smush layout
*
* @var int
*/
protected $smushOverride = 0;
/**
* Options of the current font
*
* @var array
*/
protected $fontOptions = array();
/**
* Previous character width
*
* @var int
*/
protected $previousCharWidth = 0;
/**
* Current character width
*
* @var int
*/
protected $currentCharWidth = 0;
/**
* Current outline length
*
* @var int
*/
protected $outlineLength = 0;
/**
* Maximum outline length
*
* @var int
*/
protected $outlineLengthLimit = 0;
/**
* In character line
*
* @var string
*/
protected $inCharLine;
/**
* In character line length
*
* @var int
*/
protected $inCharLineLength = 0;
/**
* Maximum in character line length
*
* @var int
*/
protected $inCharLineLengthLimit = 0;
/**
* Current char
*
* @var array
*/
protected $currentChar = null;
/**
* Current output line
*
* @var array
*/
protected $outputLine;
/**
* Current output
*
* @var string
*/
protected $output;
/**
* Option keys to skip when calling setOptions()
*
* @var array
*/
protected $skipOptions = array(
'options',
'config',
);
/**
* Instantiate the FIGlet with a specific font. If no font is given, the
* standard font is used. You can also supply multiple options via
* the $options variable, which can either be an array or an instance of
* Zend\Config\Config.
*
* @param array|Traversable $options Options for the output
*/
public function __construct($options = null)
{
// Set options
if ($options instanceof Traversable) {
$options = ArrayUtils::iteratorToArray($options);
}
if (is_array($options)) {
$this->setOptions($options);
}
// If no font was defined, load default font
if (!$this->fontLoaded) {
$this->_loadFont(__DIR__ . '/zend-framework.flf');
}
}
/**
* Set options from array
*
* @param array $options Configuration for Figlet
* @return Figlet
*/
public function setOptions(array $options)
{
foreach ($options as $key => $value) {
if (in_array(strtolower($key), $this->skipOptions)) {
continue;
}
$method = 'set' . ucfirst($key);
if (method_exists($this, $method)) {
$this->$method($value);
}
}
return $this;
}
/**
* Set a font to use
*
* @param string $font Path to the font
* @return Figlet
*/
public function setFont($font)
{
$this->_loadFont($font);
return $this;
}
/**
* Set handling of paragraphs
*
* @param bool $handleParagraphs Whether to handle paragraphs or not
* @return Figlet
*/
public function setHandleParagraphs($handleParagraphs)
{
$this->handleParagraphs = (bool) $handleParagraphs;
return $this;
}
/**
* Set the justification. 0 stands for left aligned, 1 for centered and 2
* for right aligned.
*
* @param int $justification Justification of the output text
* @return Figlet
*/
public function setJustification($justification)
{
$this->justification = min(3, max(0, (int) $justification));
return $this;
}
/**
* Set the output width
*
* @param int $outputWidth Output with which should be used for word
* wrapping and justification
* @return Figlet
*/
public function setOutputWidth($outputWidth)
{
$this->outputWidth = max(1, (int) $outputWidth);
return $this;
}
/**
* Set right to left mode. For writing from left to right, use
* Zend\Text\Figlet::DIRECTION_LEFT_TO_RIGHT. For writing from right to left,
* use Zend\Text\Figlet::DIRECTION_RIGHT_TO_LEFT.
*
* @param int $rightToLeft Right-to-left mode
* @return Figlet
*/
public function setRightToLeft($rightToLeft)
{
$this->rightToLeft = min(1, max(0, (int) $rightToLeft));
return $this;
}
/**
* Set the smush mode.
*
* Use one of the constants of Zend\Text\Figlet::SM_*, you may combine them.
*
* @param int $smushMode Smush mode to use for generating text
* @return Figlet
*/
public function setSmushMode($smushMode)
{
$smushMode = (int) $smushMode;
if ($smushMode < -1) {
$this->smushOverride = self::SMO_NO;
} else {
if ($smushMode === 0) {
$this->userSmush = self::SM_KERN;
} elseif ($smushMode === -1) {
$this->userSmush = 0;
} else {
$this->userSmush = (($smushMode & 63) | self::SM_SMUSH);
}
$this->smushOverride = self::SMO_YES;
}
$this->_setUsedSmush();
return $this;
}
/**
* Render a FIGlet text
*
* @param string $text Text to convert to a figlet text
* @param string $encoding Encoding of the input string
* @throws Exception\InvalidArgumentException When $text is not a string
* @throws Exception\UnexpectedValueException When $text it not properly encoded
* @return string
*/
public function render($text, $encoding = 'UTF-8')
{
if (!is_string($text)) {
throw new Exception\InvalidArgumentException('$text must be a string');
}
// Get the string wrapper supporting UTF-8 character encoding and the input encoding
$strWrapper = StringUtils::getWrapper($encoding, 'UTF-8');
// Convert $text to UTF-8 and check encoding
$text = $strWrapper->convert($text);
if (!StringUtils::isValidUtf8($text)) {
throw new Exception\UnexpectedValueException('$text is not encoded with ' . $encoding);
}
$strWrapper = StringUtils::getWrapper('UTF-8');
$this->output = '';
$this->outputLine = array();
$this->_clearLine();
$this->outlineLengthLimit = ($this->outputWidth - 1);
$this->inCharLineLengthLimit = ($this->outputWidth * 4 + 100);
$wordBreakMode = 0;
$lastCharWasEol = false;
$textLength = $strWrapper->strlen($text);
for ($charNum = 0; $charNum < $textLength; $charNum++) {
// Handle paragraphs
$char = $strWrapper->substr($text, $charNum, 1);
if ($char === "\n" && $this->handleParagraphs && !$lastCharWasEol) {
$nextChar = $strWrapper->substr($text, ($charNum + 1), 1);
if (!$nextChar) {
$nextChar = null;
}
$char = (ctype_space($nextChar)) ? "\n" : ' ';
}
$lastCharWasEol = (ctype_space($char) && $char !== "\t" && $char !== ' ');
if (ctype_space($char)) {
$char = ($char === "\t" || $char === ' ') ? ' ': "\n";
}
// Skip unprintable characters
$ordChar = $this->_uniOrd($char);
if (($ordChar > 0 && $ordChar < 32 && $char !== "\n") || $ordChar === 127) {
continue;
}
// Build the character
// Note: The following code is complex and thoroughly tested.
// Be careful when modifying!
do {
$charNotAdded = false;
if ($wordBreakMode === -1) {
if ($char === ' ') {
break;
} elseif ($char === "\n") {
$wordBreakMode = 0;
break;
}
$wordBreakMode = 0;
}
if ($char === "\n") {
$this->_appendLine();
$wordBreakMode = false;
} elseif ($this->_addChar($char)) {
if ($char !== ' ') {
$wordBreakMode = ($wordBreakMode >= 2) ? 3: 1;
} else {
$wordBreakMode = ($wordBreakMode > 0) ? 2: 0;
}
} elseif ($this->outlineLength === 0) {
for ($i = 0; $i < $this->charHeight; $i++) {
if ($this->rightToLeft === 1 && $this->outputWidth > 1) {
$offset = (strlen($this->currentChar[$i]) - $this->outlineLengthLimit);
$this->_putString(substr($this->currentChar[$i], $offset));
} else {
$this->_putString($this->currentChar[$i]);
}
}
$wordBreakMode = -1;
} elseif ($char === ' ') {
if ($wordBreakMode === 2) {
$this->_splitLine();
} else {
$this->_appendLine();
}
$wordBreakMode = -1;
} else {
if ($wordBreakMode >= 2) {
$this->_splitLine();
} else {
$this->_appendLine();
}
$wordBreakMode = ($wordBreakMode === 3) ? 1 : 0;
$charNotAdded = true;
}
} while ($charNotAdded);
}
if ($this->outlineLength !== 0) {
$this->_appendLine();
}
return $this->output;
}
/**
* Puts the given string, substituting blanks for hardblanks. If outputWidth
* is 1, puts the entire string; otherwise puts at most outputWidth - 1
* characters. Puts a newline at the end of the string. The string is left-
* justified, centered or right-justified (taking outputWidth as the screen
* width) if justification is 0, 1 or 2 respectively.
*
* @param string $string The string to add to the output
* @return void
*/
protected function _putString($string)
{
$length = strlen($string);
if ($this->outputWidth > 1) {
if ($length > ($this->outputWidth - 1)) {
$length = ($this->outputWidth - 1);
}
if ($this->justification > 0) {
for ($i = 1;
((3 - $this->justification) * $i + $length + $this->justification - 2) < $this->outputWidth;
$i++) {
$this->output .= ' ';
}
}
}
$this->output .= str_replace($this->hardBlank, ' ', $string) . "\n";
}
/**
* Appends the current line to the output
*
* @return void
*/
protected function _appendLine()
{
for ($i = 0; $i < $this->charHeight; $i++) {
$this->_putString($this->outputLine[$i]);
}
$this->_clearLine();
}
/**
* Splits inCharLine at the last word break (bunch of consecutive blanks).
* Makes a new line out of the first part and appends it using appendLine().
* Makes a new line out of the second part and returns.
*
* @return void
*/
protected function _splitLine()
{
$gotSpace = false;
for ($i = ($this->inCharLineLength - 1); $i >= 0; $i--) {
if (!$gotSpace && $this->inCharLine[$i] === ' ') {
$gotSpace = true;
$lastSpace = $i;
}
if ($gotSpace && $this->inCharLine[$i] !== ' ') {
break;
}
}
$firstLength = ($i + 1);
$lastLength = ($this->inCharLineLength - $lastSpace - 1);
$firstPart = '';
for ($i = 0; $i < $firstLength; $i++) {
$firstPart[$i] = $this->inCharLine[$i];
}
$lastPart = '';
for ($i = 0; $i < $lastLength; $i++) {
$lastPart[$i] = $this->inCharLine[($lastSpace + 1 + $i)];
}
$this->_clearLine();
for ($i = 0; $i < $firstLength; $i++) {
$this->_addChar($firstPart[$i]);
}
$this->_appendLine();
for ($i = 0; $i < $lastLength; $i++) {
$this->_addChar($lastPart[$i]);
}
}
/**
* Clears the current line
*
* @return void
*/
protected function _clearLine()
{
for ($i = 0; $i < $this->charHeight; $i++) {
$this->outputLine[$i] = '';
}
$this->outlineLength = 0;
$this->inCharLineLength = 0;
}
/**
* Attempts to add the given character onto the end of the current line.
* Returns true if this can be done, false otherwise.
*
* @param string $char Character which to add to the output
* @return bool
*/
protected function _addChar($char)
{
$this->_getLetter($char);
if ($this->currentChar === null) {
return true;
}
$smushAmount = $this->_smushAmount();
if (($this->outlineLength + $this->currentCharWidth - $smushAmount) > $this->outlineLengthLimit
|| ($this->inCharLineLength + 1) > $this->inCharLineLengthLimit) {
return false;
}
$tempLine = '';
for ($row = 0; $row < $this->charHeight; $row++) {
if ($this->rightToLeft === 1) {
$tempLine = $this->currentChar[$row];
for ($k = 0; $k < $smushAmount; $k++) {
$position = ($this->currentCharWidth - $smushAmount + $k);
$tempLine[$position] = $this->_smushem($tempLine[$position], $this->outputLine[$row][$k]);
}
$this->outputLine[$row] = $tempLine . substr($this->outputLine[$row], $smushAmount);
} else {
for ($k = 0; $k < $smushAmount; $k++) {
if (($this->outlineLength - $smushAmount + $k) < 0) {
continue;
}
$position = ($this->outlineLength - $smushAmount + $k);
if (isset($this->outputLine[$row][$position])) {
$leftChar = $this->outputLine[$row][$position];
} else {
$leftChar = null;
}
$this->outputLine[$row][$position] = $this->_smushem($leftChar, $this->currentChar[$row][$k]);
}
$this->outputLine[$row] .= substr($this->currentChar[$row], $smushAmount);
}
}
$this->outlineLength = strlen($this->outputLine[0]);
$this->inCharLine[$this->inCharLineLength++] = $char;
return true;
}
/**
* Gets the requested character and sets current and previous char width.
*
* @param string $char The character from which to get the letter of
* @return void
*/
protected function _getLetter($char)
{
if (array_key_exists($this->_uniOrd($char), $this->charList)) {
$this->currentChar = $this->charList[$this->_uniOrd($char)];
$this->previousCharWidth = $this->currentCharWidth;
$this->currentCharWidth = strlen($this->currentChar[0]);
} else {
$this->currentChar = null;
}
}
/**
* Returns the maximum amount that the current character can be smushed into
* the current line.
*
* @return int
*/
protected function _smushAmount()
{
if (($this->smushMode & (self::SM_SMUSH | self::SM_KERN)) === 0) {
return 0;
}
$maxSmush = $this->currentCharWidth;
$amount = $maxSmush;
for ($row = 0; $row < $this->charHeight; $row++) {
if ($this->rightToLeft === 1) {
$charbd = strlen($this->currentChar[$row]);
while (true) {
if (!isset($this->currentChar[$row][$charbd])) {
$leftChar = null;
} else {
$leftChar = $this->currentChar[$row][$charbd];
}
if ($charbd > 0 && ($leftChar === null || $leftChar == ' ')) {
$charbd--;
} else {
break;
}
}
$linebd = 0;
while (true) {
if (!isset($this->outputLine[$row][$linebd])) {
$rightChar = null;
} else {
$rightChar = $this->outputLine[$row][$linebd];
}
if ($rightChar === ' ') {
$linebd++;
} else {
break;
}
}
$amount = ($linebd + $this->currentCharWidth - 1 - $charbd);
} else {
$linebd = strlen($this->outputLine[$row]);
while (true) {
if (!isset($this->outputLine[$row][$linebd])) {
$leftChar = null;
} else {
$leftChar = $this->outputLine[$row][$linebd];
}
if ($linebd > 0 && ($leftChar === null || $leftChar == ' ')) {
$linebd--;
} else {
break;
}
}
$charbd = 0;
while (true) {
if (!isset($this->currentChar[$row][$charbd])) {
$rightChar = null;
} else {
$rightChar = $this->currentChar[$row][$charbd];
}
if ($rightChar === ' ') {
$charbd++;
} else {
break;
}
}
$amount = ($charbd + $this->outlineLength - 1 - $linebd);
}
if (empty($leftChar) || $leftChar === ' ') {
$amount++;
} elseif (!empty($rightChar)) {
if ($this->_smushem($leftChar, $rightChar) !== null) {
$amount++;
}
}
$maxSmush = min($amount, $maxSmush);
}
return $maxSmush;
}
/**
* Given two characters, attempts to smush them into one, according to the
* current smushmode. Returns smushed character or false if no smushing can
* be done.
*
* Smushmode values are sum of following (all values smush blanks):
*
* 1: Smush equal chars (not hardblanks)
* 2: Smush '_' with any char in hierarchy below
* 4: hierarchy: "|", "/\", "[]", "{}", "()", "<>"
* Each class in hier. can be replaced by later class.
* 8: [ + ] -> |, { + } -> |, ( + ) -> |
* 16: / + \ -> X, > + < -> X (only in that order)
* 32: hardblank + hardblank -> hardblank
*
* @param string $leftChar Left character to smush
* @param string $rightChar Right character to smush
* @return string
*/
protected function _smushem($leftChar, $rightChar)
{
if ($leftChar === ' ') {
return $rightChar;
}
if ($rightChar === ' ') {
return $leftChar;
}
if ($this->previousCharWidth < 2 || $this->currentCharWidth < 2) {
// Disallows overlapping if the previous character or the current
// character has a width of one or zero.
return null;
}
if (($this->smushMode & self::SM_SMUSH) === 0) {
// Kerning
return null;
}
if (($this->smushMode & 63) === 0) {
// This is smushing by universal overlapping
if ($leftChar === ' ') {
return $rightChar;
} elseif ($rightChar === ' ') {
return $leftChar;
} elseif ($leftChar === $this->hardBlank) {
return $rightChar;
} elseif ($rightChar === $this->hardBlank) {
return $rightChar;
} elseif ($this->rightToLeft === 1) {
return $leftChar;
} else {
// Occurs in the absence of above exceptions
return $rightChar;
}
}
if (($this->smushMode & self::SM_HARDBLANK) > 0) {
if ($leftChar === $this->hardBlank && $rightChar === $this->hardBlank) {
return $leftChar;
}
}
if ($leftChar === $this->hardBlank && $rightChar === $this->hardBlank) {
return null;
}
if (($this->smushMode & self::SM_EQUAL) > 0) {
if ($leftChar === $rightChar) {
return $leftChar;
}
}
if (($this->smushMode & self::SM_LOWLINE) > 0) {
if ($leftChar === '_' && strchr('|/\\[]{}()<>', $rightChar) !== false) {
return $rightChar;
} elseif ($rightChar === '_' && strchr('|/\\[]{}()<>', $leftChar) !== false) {
return $leftChar;
}
}
if (($this->smushMode & self::SM_HIERARCHY) > 0) {
if ($leftChar === '|' && strchr('/\\[]{}()<>', $rightChar) !== false) {
return $rightChar;
} elseif ($rightChar === '|' && strchr('/\\[]{}()<>', $leftChar) !== false) {
return $leftChar;
} elseif (strchr('/\\', $leftChar) && strchr('[]{}()<>', $rightChar) !== false) {
return $rightChar;
} elseif (strchr('/\\', $rightChar) && strchr('[]{}()<>', $leftChar) !== false) {
return $leftChar;
} elseif (strchr('[]', $leftChar) && strchr('{}()<>', $rightChar) !== false) {
return $rightChar;
} elseif (strchr('[]', $rightChar) && strchr('{}()<>', $leftChar) !== false) {
return $leftChar;
} elseif (strchr('{}', $leftChar) && strchr('()<>', $rightChar) !== false) {
return $rightChar;
} elseif (strchr('{}', $rightChar) && strchr('()<>', $leftChar) !== false) {
return $leftChar;
} elseif (strchr('()', $leftChar) && strchr('<>', $rightChar) !== false) {
return $rightChar;
} elseif (strchr('()', $rightChar) && strchr('<>', $leftChar) !== false) {
return $leftChar;
}
}
if (($this->smushMode & self::SM_PAIR) > 0) {
if ($leftChar === '[' && $rightChar === ']') {
return '|';
} elseif ($rightChar === '[' && $leftChar === ']') {
return '|';
} elseif ($leftChar === '{' && $rightChar === '}') {
return '|';
} elseif ($rightChar === '{' && $leftChar === '}') {
return '|';
} elseif ($leftChar === '(' && $rightChar === ')') {
return '|';
} elseif ($rightChar === '(' && $leftChar === ')') {
return '|';
}
}
if (($this->smushMode & self::SM_BIGX) > 0) {
if ($leftChar === '/' && $rightChar === '\\') {
return '|';
} elseif ($rightChar === '/' && $leftChar === '\\') {
return 'Y';
} elseif ($leftChar === '>' && $rightChar === '<') {
return 'X';
}
}
return null;
}
/**
* Load the specified font
*
* @param string $fontFile Font file to load
* @throws Exception\RuntimeException When font file was not found
* @throws Exception\RuntimeException When GZIP library is required but not found
* @throws Exception\RuntimeException When font file is not readable
* @throws Exception\UnexpectedValueException When font file is not a FIGlet 2 font file
* @return void
*/
protected function _loadFont($fontFile)
{
// Check if the font file exists
if (!file_exists($fontFile)) {
throw new Exception\RuntimeException($fontFile . ': Font file not found');
}
// Check if gzip support is required
if (substr($fontFile, -3) === '.gz') {
if (!function_exists('gzcompress')) {
throw new Exception\RuntimeException('GZIP library is required for '
. 'gzip compressed font files');
}
$fontFile = 'compress.zlib://' . $fontFile;
$compressed = true;
} else {
$compressed = false;
}
// Try to open the file
$fp = fopen($fontFile, 'rb');
if ($fp === false) {
throw new Exception\RuntimeException($fontFile . ': Could not open file');
}
// If the file is not compressed, lock the stream
if (!$compressed) {
flock($fp, LOCK_SH);
}
// Get magic
$magic = $this->_readMagic($fp);
// Get the header
$numsRead = sscanf(fgets($fp, 1000),
'%*c%c %d %*d %d %d %d %d %d',
$this->hardBlank,
$this->charHeight,
$this->maxLength,
$smush,
$cmtLines,
$rightToLeft,
$this->fontSmush);
if ($magic !== self::FONTFILE_MAGIC_NUMBER || $numsRead < 5) {
throw new Exception\UnexpectedValueException($fontFile . ': Not a FIGlet 2 font file');
}
// Set default right to left
if ($numsRead < 6) {
$rightToLeft = 0;
}
// If no smush2, decode smush into smush2
if ($numsRead < 7) {
if ($smush === 2) {
$this->fontSmush = self::SM_KERN;
} elseif ($smush < 0) {
$this->fontSmush = 0;
} else {
$this->fontSmush = (($smush & 31) | self::SM_SMUSH);
}
}
// Correct char height && maxlength
$this->charHeight = max(1, $this->charHeight);
$this->maxLength = max(1, $this->maxLength);
// Give ourselves some extra room
$this->maxLength += 100;
// See if we have to override smush settings
$this->_setUsedSmush();
// Get left to right value
if ($this->rightToLeft === null) {
$this->rightToLeft = $rightToLeft;
}
// Get justification value
if ($this->justification === null) {
$this->justification = (2 * $this->rightToLeft);
}
// Skip all comment lines
for ($line = 1; $line <= $cmtLines; $line++) {
$this->_skipToEol($fp);
}
// Fetch all ASCII characters
for ($asciiCode = 32; $asciiCode < 127; $asciiCode++) {
$this->charList[$asciiCode] = $this->_loadChar($fp);
}
// Fetch all german characters
foreach ($this->germanChars as $uniCode) {
$char = $this->_loadChar($fp);
if ($char === false) {
fclose($fp);
return;
}
if (trim(implode('', $char)) !== '') {
$this->charList[$uniCode] = $char;
}
}
// At the end fetch all extended characters
while (!feof($fp)) {
// Get the Unicode
list($uniCode) = explode(' ', fgets($fp, 2048));
if (empty($uniCode)) {
continue;
}
// Convert it if required
if (substr($uniCode, 0, 2) === '0x') {
$uniCode = hexdec(substr($uniCode, 2));
} elseif (substr($uniCode, 0, 1) === '0' and
$uniCode !== '0' or
substr($uniCode, 0, 2) === '-0') {
$uniCode = octdec($uniCode);
} else {
$uniCode = (int) $uniCode;
}
// Now fetch the character
$char = $this->_loadChar($fp);
if ($char === false) {
fclose($fp);
return;
}
$this->charList[$uniCode] = $char;
}
fclose($fp);
$this->fontLoaded = true;
}
/**
* Set the used smush mode, according to smush override, user smush and
* font smush.
*
* @return void
*/
protected function _setUsedSmush()
{
if ($this->smushOverride === self::SMO_NO) {
$this->smushMode = $this->fontSmush;
} elseif ($this->smushOverride === self::SMO_YES) {
$this->smushMode = $this->userSmush;
} elseif ($this->smushOverride === self::SMO_FORCE) {
$this->smushMode = ($this->fontSmush | $this->userSmush);
}
}
/**
* Reads a four-character magic string from a stream
*
* @param resource $fp File pointer to the font file
* @return string
*/
protected function _readMagic($fp)
{
$magic = '';
for ($i = 0; $i < 4; $i++) {
$magic .= fgetc($fp);
}
return $magic;
}
/**
* Skip a stream to the end of line
*
* @param resource $fp File pointer to the font file
* @return void
*/
protected function _skipToEol($fp)
{
$dummy = fgetc($fp);
while ($dummy !== false && !feof($fp)) {
if ($dummy === "\n") {
return;
}
if ($dummy === "\r") {
$dummy = fgetc($fp);
if (!feof($fp) && $dummy !== "\n") {
fseek($fp, -1, SEEK_SET);
}
return;
}
$dummy = fgetc($fp);
}
}
/**
* Load a single character from the font file
*
* @param resource $fp File pointer to the font file
* @return array
*/
protected function _loadChar($fp)
{
$char = array();
for ($i = 0; $i < $this->charHeight; $i++) {
if (feof($fp)) {
return false;
}
$line = rtrim(fgets($fp, 2048), "\r\n");
if (preg_match('#(.)\\1?$#', $line, $result) === 1) {
$line = str_replace($result[1], '', $line);
}
$char[] = $line;
}
return $char;
}
/**
* Unicode compatible ord() method
*
* @param string $c The char to get the value from
* @return int
*/
protected function _uniOrd($c)
{
$h = ord($c[0]);
if ($h <= 0x7F) {
$ord = $h;
} elseif ($h < 0xC2) {
$ord = 0;
} elseif ($h <= 0xDF) {
$ord = (($h & 0x1F) << 6 | (ord($c[1]) & 0x3F));
} elseif ($h <= 0xEF) {
$ord = (($h & 0x0F) << 12 | (ord($c[1]) & 0x3F) << 6 | (ord($c[2]) & 0x3F));
} elseif ($h <= 0xF4) {
$ord = (($h & 0x0F) << 18 | (ord($c[1]) & 0x3F) << 12 |
(ord($c[2]) & 0x3F) << 6 | (ord($c[3]) & 0x3F));
} else {
$ord = 0;
}
return $ord;
}
}