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Added code-highlighting for the code examples
Richard created a "simple" script that will tokenize the code and returns a highlighted string. I've included this script outside the webroot, for future usage.
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Berry Langerak
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Sep 18, 2012
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| use io; | ||
| io.print("Hello world"); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| use io; | ||
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| $a = 1; | ||
| $a += 1; | ||
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| io.print("The value of $a: ", $a , "\n"); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| use io; | ||
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| class Foo { | ||
| const FOOBAR = "foobar"; | ||
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| protected property $a = 1; | ||
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| public method ctor() { | ||
| // Constructor | ||
| } | ||
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| public method foo() { | ||
| return $a; | ||
| } | ||
| } | ||
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| $f = Foo(); | ||
| io.print ("The value is: ", $f.foo()); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| <?php | ||
| /** | ||
| * This is a script that can highlight Saffire-syntax, built by Richard van | ||
| * Velzen (https://github.com/rvanvelzen). Many thanks. | ||
| */ | ||
| $script = array_shift($argv); | ||
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| if(count($argv) === 0) { | ||
| printf("Usage: php %s <input>\n", $script); | ||
| exit; | ||
| } | ||
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| $input = array_shift( $argv ); | ||
| if(!is_file($input) || !is_readable($input)) { | ||
| printf( "File \"%s\" is not readable. Usage: php %s <input>\n", $input, $script ); | ||
| exit; | ||
| } | ||
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| echo highlightSaffire(file_get_contents($input)); | ||
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| /** | ||
| * A function that can highlight a string that contains Saffire syntax. | ||
| * | ||
| * @param string $text | ||
| * @author Richard van Velzen https://github.com/rvanvelzen | ||
| */ | ||
| function highlightSaffire($text) { | ||
| $pointer = 0; | ||
| $length = strlen($text); | ||
| $output = array(); | ||
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| $ST_REGEX = 0; | ||
| $ST_DIV = 1; | ||
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| $state = $ST_REGEX; // 0 is st_regex, 1 is st_div | ||
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| while ($pointer < $length) { | ||
| if (!preg_match('~(?x) | ||
| (?P<comment> //.* | /\*([^*]|\*[^/])*\*/ ) | ||
| | (?P<keyword> \b (?: | ||
| if | else | use | as | do | for | foreach | switch | class | extends | ||
| | implements | abstract | final | interface | const | static | public | ||
| | private | protected | method | readonly | property | catch | finally | ||
| | throw | return | break | breakelse | continue | try | default | goto | ||
| | case | self | parent | yield | in | ||
| ) \b ) | ||
| | (?P<operator> (?: [<>]{2} | [-+*/%&|^\~<>=!] ) = | [|&<>+-]{2} | [][+%<>(){}:;=,.?!*^|-] | ||
| ' . ($state === $ST_DIV ? ' | / ' : '') . ') | ||
| | (?P<regex> ' . ($state === $ST_DIV ? '(?!)' : ' | ||
| /[^/\\\\]*(?:\\\\.[^/\\\\]*)*/[a-z]* | ||
| ' ) . ') | ||
| | (?P<identifier> ::\+ | [$a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]* | [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]* [?!]? ) | ||
| | (?P<string> "[^"]*" | \'[^\']*\' ) | ||
| | (?P<whitespace> \s+ ) | ||
| | (?P<number> \d+ ) | ||
| | (?P<error> [\s\S] ) | ||
| ~u', $text, $match, null, $pointer)) { | ||
| break; | ||
| } | ||
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| $lexeme = htmlspecialchars($match[0]); | ||
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| $type = null; | ||
| foreach (array( | ||
| 'comment' => array('comment', null), | ||
| 'keyword' => array('keyword', $ST_REGEX), | ||
| 'identifier' => array('identifier', $ST_DIV), | ||
| 'string' => array('string', $ST_DIV), | ||
| 'number' => array('number', $ST_DIV), | ||
| 'operator' => array('operator', $ST_REGEX), | ||
| 'regex' => array('regex', $ST_DIV), | ||
| 'whitespace' => array(null, null) | ||
| ) as $index => $class) { | ||
| if (isset($match[$index]) && strlen($match[$index])) { | ||
| list($class, $newState) = $class; | ||
| $type = $class; | ||
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| if ($newState !== null) { | ||
| $state = $newState; | ||
| } | ||
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| break; | ||
| } | ||
| } | ||
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| $output[] = $type ? '<span class="' . $type . '">' . $lexeme . '</span>' : $lexeme; | ||
| $pointer += strlen($match[0]); | ||
| } | ||
|
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| return '<pre class="source saffire">' . implode($output) . '</pre>'; | ||
| } |
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