Class BasicCParser

java.lang.Object

org.apache.commons.imaging.common.BasicCParser

public class BasicCParser
extends Object

A rudimentary preprocessor and parser for the C programming language. FIXME replace this by a parser generated via ANTLR (if we really need it?!)

Field Summary

Fields

Modifier and Type	Field	Description
private final PushbackInputStream	is

Constructor Summary

Constructors

Constructor	Description
BasicCParser(ByteArrayInputStream is)

Method Summary

Modifier and Type	Method	Description
private static int	appendHex(int i, StringBuilder stringBuilder, String string)	Parses the hexadecimal-base escape-sequence found at index i of string.
private static int	appendOct(int i, StringBuilder stringBuilder, String string)	Parses the octal-base escape-sequence found at index i of string.
String	nextToken()
private static int	parseEscape(int i, StringBuilder stringBuilder, String string)	Parses the i:th escape-char in the input string and appends it to stringBuilder.
static ByteArrayOutputStream	preprocess(InputStream is, StringBuilder firstComment, Map<String,String> defines)
static String[]	tokenizeRow(String row)
static void	unescapeString(StringBuilder stringBuilder, String string)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

is

private final PushbackInputStream is

Constructor Details

BasicCParser

public BasicCParser(ByteArrayInputStream is)

Method Details

appendHex

private static int appendHex(int i,
 StringBuilder stringBuilder,
 String string)
                      throws ImagingException

Parses the hexadecimal-base escape-sequence found at index i of string.

Helper-function for unescapeString().

Parameters:

i - the index of the escape-sequence in the string

stringBuilder - the stringBuilder to append the escape-char to

string - the string whose chars are parsed

Returns:

the new index i

Throws:

ImagingException

Since:

1.0-alpha3

appendOct

private static int appendOct(int i,
 StringBuilder stringBuilder,
 String string)

Parses the octal-base escape-sequence found at index i of string.

Helper-function for unescapeString().

Parameters:

i - the index of the escape-sequence in the string

stringBuilder - the stringBuilder to append the escape-char to

string - the string whose chars are parsed

Returns:

the new index i

Since:

1.0-alpha3

parseEscape

private static int parseEscape(int i,
 StringBuilder stringBuilder,
 String string)
                        throws ImagingException

Parses the i:th escape-char in the input string and appends it to stringBuilder.

Helper-function for unescapeString().

Parameters:

i - the index of the escape-char in the string

stringBuilder - the stringBuilder to append the escape-char to

string - the string whose chars are parsed

Returns:

the new index i

Throws:

ImagingException

Since:

1.0-alpha3

preprocess

public static ByteArrayOutputStream preprocess(InputStream is,
 StringBuilder firstComment,
 Map<String,String> defines)
                                        throws IOException,
ImagingException

Throws:

IOException

ImagingException

tokenizeRow

public static String[] tokenizeRow(String row)

unescapeString

public static void unescapeString(StringBuilder stringBuilder,
 String string)
                           throws ImagingException

Throws:

ImagingException

nextToken

public String nextToken()
                 throws IOException,
ImagingException

Throws:

IOException

ImagingException