public
class
ImageFormatCheckerUtils
extends Object| java.lang.Object | |
| ↳ | com.facebook.imageformat.ImageFormatCheckerUtils |
Class Overview
ImageFormatChecker utility methods
Summary
| Public Methods | |||||||||||
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| static byte[] |
asciiBytes(String value)
Helper method that transforms provided string into it's byte representation using ASCII
encoding.
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| static boolean |
hasPatternAt(byte[] byteArray, byte[] pattern, int offset)
Checks if byteArray interpreted as sequence of bytes starts with pattern starting at position
equal to offset.
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| static int |
indexOfPattern(byte[] byteArray, int byteArrayLen, byte[] pattern, int patternLen)
Checks if byteArray interpreted as sequence of bytes contains the pattern.
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| static boolean |
startsWithPattern(byte[] byteArray, byte[] pattern)
Checks if byteArray interpreted as sequence of bytes starts with pattern starting at position
equal to offset.
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[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
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Public Methods
public static byte[] asciiBytes (String value)
Helper method that transforms provided string into it's byte representation using ASCII encoding.
Parameters
| value | the string to use |
|---|
Returns
- byte array representing ascii encoded value
public static boolean hasPatternAt (byte[] byteArray, byte[] pattern, int offset)
Checks if byteArray interpreted as sequence of bytes starts with pattern starting at position equal to offset.
Parameters
| byteArray | the byte array to be checked |
|---|---|
| pattern | the pattern to check |
Returns
- true if byteArray starts with pattern
public static int indexOfPattern (byte[] byteArray, int byteArrayLen, byte[] pattern, int patternLen)
Checks if byteArray interpreted as sequence of bytes contains the pattern.
Parameters
| byteArray | the byte array to be checked |
|---|---|
| pattern | the pattern to check |
Returns
- index of beginning of pattern, if found; otherwise -1
public static boolean startsWithPattern (byte[] byteArray, byte[] pattern)
Checks if byteArray interpreted as sequence of bytes starts with pattern starting at position equal to offset.
Parameters
| byteArray | the byte array to be checked |
|---|---|
| pattern | the pattern to check |
Returns
- true if byteArray starts with pattern