CkoBinData Objective-C Reference Documentation

CkoBinData

Current Version: 10.0.0

Container for binary data. Provides methods for getting, setting, appending, etc. in binary and string encoded formats.

Object Creation

CkoBinData *obj = [[CkoBinData alloc] init];

Properties

LastMethodSuccess
@property (nonatomic) BOOL LastMethodSuccess;

Indicate whether the last method call succeeded or failed. A value of YES indicates success, a value of NO indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = YES and failure = NO.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to YES. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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NumBytes
@property (nonatomic, readonly, copy) NSNumber *NumBytes;
Introduced in version 9.5.0.51

The number of bytes contained within the object.

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Methods

AppendBd
- (BOOL)AppendBd:(CkoBinData *)binData;
Introduced in version 9.5.0.62

Appends the contents of another BinData to this object.

Returns YES for success, NO for failure.

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AppendBinary
- (BOOL)AppendBinary:(NSData *)data;
Introduced in version 9.5.0.51

Appends binary data to the current contents, if any.

Returns YES for success, NO for failure.

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AppendBinary2
- (BOOL)AppendBinary2:(NSData *)pByteData
    szByteData:(NSNumber *)szByteData;
Introduced in version 9.5.0.82

Appends binary data to the current contents, if any.

Returns YES for success, NO for failure.

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AppendBom
- (BOOL)AppendBom:(NSString *)charset;
Introduced in version 9.5.0.62

Appends the appropriate BOM (byte order mark), also known as a "preamble", for the given charset. If the charset has no defined BOM, then nothing is appended. An application would typically call this to append the utf-8, utf-16, or utf-32 BOM.

Returns YES for success, NO for failure.

More Information and Examples
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AppendByte
- (BOOL)AppendByte:(NSNumber *)byteValue;
Introduced in version 9.5.0.77

Appends a single byte. The byteValue should be a value from 0 to 255.

Returns YES for success, NO for failure.

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AppendCountedString
- (BOOL)AppendCountedString:(NSNumber *)numCountBytes
    bigEndian:(BOOL)bigEndian
    str:(NSString *)str
    charset:(NSString *)charset;
Introduced in version 9.5.0.91

Appends a byte count followed by the string in the desired character encoding, such as "utf-8". The numCountBytes is the size in bytes of the integer to represent the byte count. If 0, then a minimal number of bytes is used. If bigEndian is YES, the byte count is appended in big endian byte ordering, otherwise little-ending byte ordering. The str is the string to be appended. The charset is the character encoding, such as "utf-8", "utf-16", "windows-1252", etc.

Returns YES for success, NO for failure.

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AppendEncoded
- (BOOL)AppendEncoded:(NSString *)encData
    encoding:(NSString *)encoding;
Introduced in version 9.5.0.51

Appends encoded binary data to the current data. The encoding may be "Base64", "modBase64", "base64Url", "Base32", "Base58", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", or any of the encodings found at Chilkat Binary Encodings List.

Returns YES for success, NO for failure.

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AppendEncodedSb
- (BOOL)AppendEncodedSb:(CkoStringBuilder *)sb
    encoding:(NSString *)encoding;
Introduced in version 9.5.0.62

Decodes the contents of sb and appends the decoded bytes to this object. The encoding may be "Base64", "modBase64", "base64Url", "Base32", "Base58", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", or any of the encodings found at Chilkat Binary Encodings List.

Returns YES for success, NO for failure.

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AppendInt2
- (BOOL)AppendInt2:(NSNumber *)value
    littleEndian:(BOOL)littleEndian;
Introduced in version 9.5.0.77

Appends a 16-bit integer (2 bytes). If littleEndian is YES, then the integer bytes are appended in little-endian byte order, otherwise big-endian byte order is used.

Returns YES for success, NO for failure.

More Information and Examples
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AppendInt4
- (BOOL)AppendInt4:(NSNumber *)value
    littleEndian:(BOOL)littleEndian;
Introduced in version 9.5.0.77

Appends a 32-bit integer (4 bytes). If littleEndian is YES, then the integer bytes are appended in little-endian byte order, otherwise big-endian byte order is used.

Returns YES for success, NO for failure.

More Information and Examples
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AppendPadded
- (BOOL)AppendPadded:(NSString *)str
    charset:(NSString *)charset
    padWithSpace:(BOOL)padWithSpace
    fieldLen:(NSNumber *)fieldLen;
Introduced in version 9.5.0.80

Appends a string to this object, padded to the fieldLen with NULL or SPACE chars. If padWithSpace is YES, then SPACE chars are used and the string is not null-terminated. If fieldLen is NO, then null bytes are used. The charset controls the byte representation to use, such as "utf-8".

Note: This call will always append a total number of bytes equal to fieldLen. If the str is longer than fieldLen, the method returns NO to indicate failure and nothing is appended.

Returns YES for success, NO for failure.

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AppendSb
- (BOOL)AppendSb:(CkoStringBuilder *)sb
    charset:(NSString *)charset;
Introduced in version 9.5.0.62

Appends the contents of a StringBuilder to this object.

Returns YES for success, NO for failure.

More Information and Examples
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AppendString
- (BOOL)AppendString:(NSString *)str
    charset:(NSString *)charset;
Introduced in version 9.5.0.62

Appends a string to this object. (This does not append the BOM. If a BOM is required, the AppendBom method can be called to append the appropriate BOM.)

Returns YES for success, NO for failure.

More Information and Examples
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Clear
- (BOOL)Clear;
Introduced in version 9.5.0.51

Clears the contents.

Returns YES for success, NO for failure.

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ContentsEqual
- (BOOL)ContentsEqual:(CkoBinData *)binData;
Introduced in version 9.5.0.62

Return YES if the contents of this object equals the contents of binData.

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FindString
- (NSNumber *)FindString:(NSString *)str
    startIdx:(NSNumber *)startIdx
    charset:(NSString *)charset;
Introduced in version 9.5.0.85

Return the index where the first occurrence of str is found. Return -1 if not found. The startIdx indicates the byte index where the search begins. The charset specifies the byte representation of str that is to be searched. For example, it can be "utf-8", "windows-1252", "ansi", "utf-16", etc.

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GetBinary
- (NSData *)GetBinary;
Introduced in version 9.5.0.51

Retrieves the binary data contained within the object.

Returns nil on failure

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GetBinaryChunk
- (NSData *)GetBinaryChunk:(NSNumber *)offset
    numBytes:(NSNumber *)numBytes;
Introduced in version 9.5.0.51

Retrieves a chunk of the binary data contained within the object.

Returns nil on failure

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GetByte
- (NSNumber *)GetByte:(NSNumber *)index;
Introduced in version 9.5.0.92

Returns the value of the byte at the given index. The returned value is an integer from 0 to 255.

Returns YES for success, NO for failure.

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GetEncoded
- (NSString *)GetEncoded:(NSString *)encoding;
Introduced in version 9.5.0.51

Retrieves the binary data as an encoded string. The encoding may be "Base64", "modBase64", "base64Url", "Base32", "Base58", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", or any of the encodings found at Chilkat Binary Encodings List.

Returns nil on failure

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GetEncodedChunk
- (NSString *)GetEncodedChunk:(NSNumber *)offset
    numBytes:(NSNumber *)numBytes
    encoding:(NSString *)encoding;
Introduced in version 9.5.0.51

Retrieves a chunk of the binary data and returns it in encoded form. The encoding may be "Base64", "modBase64", "base64Url", "Base32", "Base58", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", or any of the encodings found at Chilkat Binary Encodings List.

Returns nil on failure

More Information and Examples
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GetEncodedSb
- (BOOL)GetEncodedSb:(NSString *)encoding
    sb:(CkoStringBuilder *)sb;
Introduced in version 9.5.0.64

Writes the encoded data to a StringBuilder. The encoding may be "Base64", "modBase64", "base64Url", "Base32", "Base58", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", or any of the encodings found at Chilkat Binary Encodings List.

Returns YES for success, NO for failure.

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GetHash
- (NSString *)GetHash:(NSString *)algorithm
    encoding:(NSString *)encoding;
Introduced in version 9.5.0.91

Returns the hash of the contents of this object. The algorithm is the hash algorithm, and can be "sha1", "sha256", "sha384", "sha512", "sha3-224", "sha3-256", "sha3-384", "sha3-512", "md2", "md5", "ripemd128", "ripemd160","ripemd256", or "ripemd320". The encoding can be "base64", "modBase64", "base64Url", "base32", "base58", "qp" (for quoted-printable), "url" (for url-encoding), "hex", "hexLower", or any of the encodings found at Chilkat Binary Encodings List.

Returns nil on failure

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GetInt2
- (NSNumber *)GetInt2:(NSNumber *)index
    littleEndian:(BOOL)littleEndian;
Introduced in version 9.5.0.88

Returns the value of the 16-bit signed integer stored in big-endian or little-endian byte ordering at the given index.

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GetInt4
- (NSNumber *)GetInt4:(NSNumber *)index
    littleEndian:(BOOL)littleEndian;
Introduced in version 9.5.0.88

Returns the value of the 32-bit signed integer stored in big-endian or little-endian byte ordering at the given index.

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GetString
- (NSString *)GetString:(NSString *)charset;
Introduced in version 9.5.0.67

Interprets the bytes according to charset and returns the string. The charset can be "utf-8", "utf-16", "ansi", "iso-8859-*", "windows-125*", or any of the supported character encodings listed in the link below.

Returns nil on failure

More Information and Examples
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GetTextChunk
- (NSString *)GetTextChunk:(NSNumber *)startIdx
    numBytes:(NSNumber *)numBytes
    charset:(NSString *)charset;
Introduced in version 9.5.0.85

Returns numBytes bytes starting at startIdx. The bytes are interpreted according to charset (for example, "utf-8", "ansi", "utf-16", "windows-1252", etc.)

Returns nil on failure

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GetUInt2
- (NSNumber *)GetUInt2:(NSNumber *)index
    littleEndian:(BOOL)littleEndian;
Introduced in version 9.5.0.88

Returns the value of the 16-bit unsigned integer stored in big-endian or little-endian byte ordering at the given index.

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GetUInt4
- (NSNumber *)GetUInt4:(NSNumber *)index
    littleEndian:(BOOL)littleEndian;
Introduced in version 9.5.0.88

Returns the value of the 32-bit unsigned integer stored in big-endian or little-endian byte ordering at the given index.

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LoadBinary
- (BOOL)LoadBinary:(NSData *)data;
Introduced in version 9.5.0.51

Loads binary data and replaces the current contents, if any.

Returns YES for success, NO for failure.

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LoadBinary2
- (BOOL)LoadBinary2:(NSData *)pByteData
    szByteData:(NSNumber *)szByteData;
Introduced in version 9.5.0.82

Loads binary data and replaces the current contents, if any.

Returns YES for success, NO for failure.

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LoadEncoded
- (BOOL)LoadEncoded:(NSString *)encData
    encoding:(NSString *)encoding;
Introduced in version 9.5.0.51

Loads binary data from an encoded string, replacing the current contents, if any. The encoding may be "Base64", "modBase64", "base64Url", "Base32", "Base58", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", or any of the encodings found at Chilkat Binary Encodings List.

Returns YES for success, NO for failure.

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LoadFile
- (BOOL)LoadFile:(NSString *)path;
Introduced in version 9.5.0.51

Loads data from a file.

Returns YES for success, NO for failure.

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RemoveByteVal
- (void)RemoveByteVal:(NSNumber *)value;
Introduced in version 9.5.0.90

Removes bytes having a specified value (0-255). For example, to remove all null bytes, pass 0 in value.

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RemoveChunk
- (BOOL)RemoveChunk:(NSNumber *)offset
    numBytes:(NSNumber *)numBytes;
Introduced in version 9.5.0.51

Removes a chunk of bytes from the binary data.

More Information and Examples
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SecureClear
- (BOOL)SecureClear;
Introduced in version 9.5.0.67

Securely clears the contents by writing 0 bytes to the memory prior to deallocating the internal memory.

Returns YES for success, NO for failure.

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WriteAppendFile
- (BOOL)WriteAppendFile:(NSString *)path;
Introduced in version 9.5.0.91

Appends the contents of this object to a file.

Returns YES for success, NO for failure.

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WriteFile
- (BOOL)WriteFile:(NSString *)path;
Introduced in version 9.5.0.62

Writes the contents to a file.

Returns YES for success, NO for failure.

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