Class TokenQueue
java.lang.Object
com.itextpdf.styledxmlparser.jsoup.parser.TokenQueue
A character queue with parsing helpers.
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Field Summary
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
Add a character to the start of the queue (will be the next character retrieved).void
Add a string to the start of the queue.void
advance()
Drops the next character off the queue.chompBalanced
(char open, char close) Pulls a balanced string off the queue.Pulls a string off the queue (like consumeTo), and then pulls off the matched string (but does not return it).chompToIgnoreCase
(String seq) char
consume()
Consume one character off queue.void
Consumes the supplied sequence of the queue.Consume an attribute key off the queue (letter, digit, -, _, :")Consume a CSS identifier (ID or class) off the queue (letter, digit, -, _) http://www.w3.org/TR/CSS2/syndata.html#value-def-identifierConsume a CSS element selector (tag name, but | instead of : for namespaces (or *| for wildcard namespace), to not conflict with :pseudo selects).Consume an tag name off the queue (word or :, _, -)Pulls a string off the queue, up to but exclusive of the match sequence, or to the queue running out.consumeToAny
(String... seq) Consumes to the first sequence provided, or to the end of the queue.boolean
Pulls the next run of whitespace characters of the queue.Retrieves the next run of word type (letter or digit) off the queue.boolean
isEmpty()
Is the queue empty?boolean
matchChomp
(String seq) Tests if the queue matches the sequence (as with match), and if they do, removes the matched string from the queue.boolean
Tests if the next characters on the queue match the sequence.boolean
matchesAny
(char... seq) boolean
matchesAny
(String... seq) Tests if the next characters match any of the sequences.boolean
Case sensitive match test.boolean
boolean
Tests if queue starts with a whitespace character.boolean
Test if the queue matches a word character (letter or digit).char
peek()
Retrieves but does not remove the first character from the queue.Consume and return whatever is left on the queue.private int
toString()
static String
Unescape a \ escaped string.
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Field Details
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queue
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pos
private int pos -
ESC
private static final char ESC- See Also:
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Constructor Details
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TokenQueue
Create a new TokenQueue.- Parameters:
data
- string of data to back queue.
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Method Details
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isEmpty
public boolean isEmpty()Is the queue empty?- Returns:
- true if no data left in queue.
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remainingLength
private int remainingLength() -
peek
public char peek()Retrieves but does not remove the first character from the queue.- Returns:
- First character, or 0 if empty.
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addFirst
Add a character to the start of the queue (will be the next character retrieved).- Parameters:
c
- character to add
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addFirst
Add a string to the start of the queue.- Parameters:
seq
- string to add.
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matches
Tests if the next characters on the queue match the sequence. Case insensitive.- Parameters:
seq
- String to check queue for.- Returns:
- true if the next characters match.
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matchesCS
Case sensitive match test.- Parameters:
seq
- string to case sensitively check for- Returns:
- true if matched, false if not
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matchesAny
Tests if the next characters match any of the sequences. Case insensitive.- Parameters:
seq
- list of strings to case insensitively check for- Returns:
- true of any matched, false if none did
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matchesAny
public boolean matchesAny(char... seq) -
matchesStartTag
public boolean matchesStartTag() -
matchChomp
Tests if the queue matches the sequence (as with match), and if they do, removes the matched string from the queue.- Parameters:
seq
- String to search for, and if found, remove from queue.- Returns:
- true if found and removed, false if not found.
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matchesWhitespace
public boolean matchesWhitespace()Tests if queue starts with a whitespace character.- Returns:
- if starts with whitespace
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matchesWord
public boolean matchesWord()Test if the queue matches a word character (letter or digit).- Returns:
- if matches a word character
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advance
public void advance()Drops the next character off the queue. -
consume
public char consume()Consume one character off queue.- Returns:
- first character on queue.
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consume
Consumes the supplied sequence of the queue. If the queue does not start with the supplied sequence, will throw an illegal state exception -- but you should be running match() against that condition.Case insensitive.
- Parameters:
seq
- sequence to remove from head of queue.
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consumeTo
Pulls a string off the queue, up to but exclusive of the match sequence, or to the queue running out.- Parameters:
seq
- String to end on (and not include in return, but leave on queue). Case sensitive.- Returns:
- The matched data consumed from queue.
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consumeToIgnoreCase
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consumeToAny
Consumes to the first sequence provided, or to the end of the queue. Leaves the terminator on the queue.- Parameters:
seq
- any number of terminators to consume to. Case insensitive.- Returns:
- consumed string
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chompTo
Pulls a string off the queue (like consumeTo), and then pulls off the matched string (but does not return it).If the queue runs out of characters before finding the seq, will return as much as it can (and queue will go isEmpty() == true).
- Parameters:
seq
- String to match up to, and not include in return, and to pull off queue. Case sensitive.- Returns:
- Data matched from queue.
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chompToIgnoreCase
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chompBalanced
Pulls a balanced string off the queue. E.g. if queue is "(one (two) three) four", (,) will return "one (two) three", and leave " four" on the queue. Unbalanced openers and closers can be quoted (with ' or ") or escaped (with \). Those escapes will be left in the returned string, which is suitable for regexes (where we need to preserve the escape), but unsuitable for contains text strings; use unescape for that.- Parameters:
open
- openerclose
- closer- Returns:
- data matched from the queue
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unescape
Unescape a \ escaped string.- Parameters:
in
- backslash escaped string- Returns:
- unescaped string
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consumeWhitespace
public boolean consumeWhitespace()Pulls the next run of whitespace characters of the queue.- Returns:
- Whether consuming whitespace or not
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consumeWord
Retrieves the next run of word type (letter or digit) off the queue.- Returns:
- String of word characters from queue, or empty string if none.
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consumeTagName
Consume an tag name off the queue (word or :, _, -)- Returns:
- tag name
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consumeElementSelector
Consume a CSS element selector (tag name, but | instead of : for namespaces (or *| for wildcard namespace), to not conflict with :pseudo selects).- Returns:
- tag name
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consumeCssIdentifier
Consume a CSS identifier (ID or class) off the queue (letter, digit, -, _) http://www.w3.org/TR/CSS2/syndata.html#value-def-identifier- Returns:
- identifier
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consumeAttributeKey
Consume an attribute key off the queue (letter, digit, -, _, :")- Returns:
- attribute key
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remainder
Consume and return whatever is left on the queue.- Returns:
- remained of queue.
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toString
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