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Remove trailing whitespace.

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Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
This commit is contained in:
Edward Z. Yang
2008-12-06 02:28:20 -05:00
parent 3a6b63dff1
commit 2c955af135
476 changed files with 5595 additions and 5547 deletions
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142
library/HTMLPurifier/Lexer/DirectLex.php
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@@ -2,24 +2,24 @@
/**
* Our in-house implementation of a parser.
*
*
* A pure PHP parser, DirectLex has absolutely no dependencies, making
* it a reasonably good default for PHP4. Written with efficiency in mind,
* it can be four times faster than HTMLPurifier_Lexer_PEARSax3, although it
* pales in comparison to HTMLPurifier_Lexer_DOMLex.
*
*
* @todo Reread XML spec and document differences.
*/
class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
{
public $tracksLineNumbers = true;
/**
* Whitespace characters for str(c)spn.
*/
protected $_whitespace = "\x20\x09\x0D\x0A";
/**
* Callback function for script CDATA fudge
* @param $matches, in form of array(opening tag, contents, closing tag)
@@ -27,9 +27,9 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
protected function scriptCallback($matches) {
return $matches[1] . htmlspecialchars($matches[2], ENT_COMPAT, 'UTF-8') . $matches[3];
}
public function tokenizeHTML($html, $config, $context) {
// special normalization for script tags without any armor
// our "armor" heurstic is a < sign any number of whitespaces after
// the first script tag
@@ -37,25 +37,25 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$html = preg_replace_callback('#(<script[^>]*>)(\s*[^<].+?)(</script>)#si',
array($this, 'scriptCallback'), $html);
}
$html = $this->normalize($html, $config, $context);
$cursor = 0; // our location in the text
$inside_tag = false; // whether or not we're parsing the inside of a tag
$array = array(); // result array
// This is also treated to mean maintain *column* numbers too
$maintain_line_numbers = $config->get('Core', 'MaintainLineNumbers');
if ($maintain_line_numbers === null) {
// automatically determine line numbering by checking
// if error collection is on
$maintain_line_numbers = $config->get('Core', 'CollectErrors');
}
if ($maintain_line_numbers) {
$current_line = 1;
$current_col = 0;
$current_col = 0;
$length = strlen($html);
} else {
$current_line = false;
@@ -67,34 +67,34 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$nl = "\n";
// how often to manually recalculate. This will ALWAYS be right,
// but it's pretty wasteful. Set to 0 to turn off
$synchronize_interval = $config->get('Core', 'DirectLexLineNumberSyncInterval');
$synchronize_interval = $config->get('Core', 'DirectLexLineNumberSyncInterval');
$e = false;
if ($config->get('Core', 'CollectErrors')) {
$e =& $context->get('ErrorCollector');
}
// for testing synchronization
$loops = 0;
while(++$loops) {
// $cursor is either at the start of a token, or inside of
// a tag (i.e. there was a < immediately before it), as indicated
// by $inside_tag
if ($maintain_line_numbers) {
// $rcursor, however, is always at the start of a token.
$rcursor = $cursor - (int) $inside_tag;
// Column number is cheap, so we calculate it every round.
// We're interested at the *end* of the newline string, so
// We're interested at the *end* of the newline string, so
// we need to add strlen($nl) == 1 to $nl_pos before subtracting it
// from our "rcursor" position.
$nl_pos = strrpos($html, $nl, $rcursor - $length);
$current_col = $rcursor - (is_bool($nl_pos) ? 0 : $nl_pos + 1);
// recalculate lines
if (
$synchronize_interval && // synchronization is on
@@ -103,19 +103,19 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
) {
$current_line = 1 + $this->substrCount($html, $nl, 0, $cursor);
}
}
$position_next_lt = strpos($html, '<', $cursor);
$position_next_gt = strpos($html, '>', $cursor);
// triggers on "<b>asdf</b>" but not "asdf <b></b>"
// special case to set up context
if ($position_next_lt === $cursor) {
$inside_tag = true;
$cursor++;
}
if (!$inside_tag && $position_next_lt !== false) {
// We are not inside tag and there still is another tag to parse
$token = new
@@ -154,22 +154,22 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
// We are in tag and it is well formed
// Grab the internals of the tag
$strlen_segment = $position_next_gt - $cursor;
if ($strlen_segment < 1) {
// there's nothing to process!
$token = new HTMLPurifier_Token_Text('<');
$cursor++;
continue;
}
$segment = substr($html, $cursor, $strlen_segment);
if ($segment === false) {
// somehow, we attempted to access beyond the end of
// the string, defense-in-depth, reported by Nate Abele
break;
}
// Check if it's a comment
if (
substr($segment, 0, 3) === '!--'
@@ -203,7 +203,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$inside_tag = false;
continue;
}
// Check if it's an end tag
$is_end_tag = (strpos($segment,'/') === 0);
if ($is_end_tag) {
@@ -218,7 +218,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$cursor = $position_next_gt + 1;
continue;
}
// Check leading character is alnum, if not, we may
// have accidently grabbed an emoticon. Translate into
// text and go our merry way
@@ -234,7 +234,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$inside_tag = false;
continue;
}
// Check if it is explicitly self closing, if so, remove
// trailing slash. Remember, we could have a tag like <br>, so
// any later token processing scripts must convert improperly
@@ -244,10 +244,10 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$strlen_segment--;
$segment = substr($segment, 0, $strlen_segment);
}
// Check if there are any attributes
$position_first_space = strcspn($segment, $this->_whitespace);
if ($position_first_space >= $strlen_segment) {
if ($is_self_closing) {
$token = new HTMLPurifier_Token_Empty($segment);
@@ -263,7 +263,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$cursor = $position_next_gt + 1;
continue;
}
// Grab out all the data
$type = substr($segment, 0, $position_first_space);
$attribute_string =
@@ -280,7 +280,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
} else {
$attr = array();
}
if ($is_self_closing) {
$token = new HTMLPurifier_Token_Empty($type, $attr);
} else {
@@ -311,12 +311,12 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
}
break;
}
$context->destroy('CurrentLine');
$context->destroy('CurrentCol');
return $array;
}
/**
* PHP 5.0.x compatible substr_count that implements offset and length
*/
@@ -332,23 +332,23 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
return substr_count($haystack, $needle, $offset, $length);
}
}
/**
* Takes the inside of an HTML tag and makes an assoc array of attributes.
*
*
* @param $string Inside of tag excluding name.
* @returns Assoc array of attributes.
*/
public function parseAttributeString($string, $config, $context) {
$string = (string) $string; // quick typecast
if ($string == '') return array(); // no attributes
$e = false;
if ($config->get('Core', 'CollectErrors')) {
$e =& $context->get('ErrorCollector');
}
// let's see if we can abort as quickly as possible
// one equal sign, no spaces => one attribute
$num_equal = substr_count($string, '=');
@@ -367,10 +367,10 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
if (!$quoted_value) return array($key => '');
$first_char = @$quoted_value[0];
$last_char = @$quoted_value[strlen($quoted_value)-1];
$same_quote = ($first_char == $last_char);
$open_quote = ($first_char == '"' || $first_char == "'");
if ( $same_quote && $open_quote) {
// well behaved
$value = substr($quoted_value, 1, strlen($quoted_value) - 2);
@@ -386,67 +386,67 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
if ($value === false) $value = '';
return array($key => $value);
}
// setup loop environment
$array = array(); // return assoc array of attributes
$cursor = 0; // current position in string (moves forward)
$size = strlen($string); // size of the string (stays the same)
// if we have unquoted attributes, the parser expects a terminating
// space, so let's guarantee that there's always a terminating space.
$string .= ' ';
while(true) {
if ($cursor >= $size) {
break;
}
$cursor += ($value = strspn($string, $this->_whitespace, $cursor));
// grab the key
$key_begin = $cursor; //we're currently at the start of the key
// scroll past all characters that are the key (not whitespace or =)
$cursor += strcspn($string, $this->_whitespace . '=', $cursor);
$key_end = $cursor; // now at the end of the key
$key = substr($string, $key_begin, $key_end - $key_begin);
if (!$key) {
if ($e) $e->send(E_ERROR, 'Lexer: Missing attribute key');
$cursor += strcspn($string, $this->_whitespace, $cursor + 1); // prevent infinite loop
continue; // empty key
}
// scroll past all whitespace
$cursor += strspn($string, $this->_whitespace, $cursor);
if ($cursor >= $size) {
$array[$key] = $key;
break;
}
// if the next character is an equal sign, we've got a regular
// pair, otherwise, it's a bool attribute
$first_char = @$string[$cursor];
if ($first_char == '=') {
// key="value"
$cursor++;
$cursor += strspn($string, $this->_whitespace, $cursor);
if ($cursor === false) {
$array[$key] = '';
break;
}
// we might be in front of a quote right now
$char = @$string[$cursor];
if ($char == '"' || $char == "'") {
// it's quoted, end bound is $char
$cursor++;
@@ -459,18 +459,18 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$cursor += strcspn($string, $this->_whitespace, $cursor);
$value_end = $cursor;
}
// we reached a premature end
if ($cursor === false) {
$cursor = $size;
$value_end = $cursor;
}
$value = substr($string, $value_begin, $value_end - $value_begin);
if ($value === false) $value = '';
$array[$key] = $this->parseData($value);
$cursor++;
} else {
// boolattr
if ($key !== '') {
@@ -479,11 +479,11 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
// purely theoretical
if ($e) $e->send(E_ERROR, 'Lexer: Missing attribute key');
}
}
}
return $array;
}
}