BinData Unicode C Reference Documentation

BinData

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

Create/Dispose

HCkBinDataW CkBinDataW_Create(void);

Creates an instance of the HCkBinDataW object and returns a handle (i.e. a "void *" pointer). The handle is passed in the 1st argument for the functions listed on this page.

void CkBinDataW_Dispose(HCkBinDataW handle);

Objects created by calling CkBinDataW_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function. Also, any handle returned by a Chilkat "C" function must also be freed by the application by calling the appropriate Dispose method, such as CkBinDataW_Dispose.

Properties

BOOL CkBinDataW_getLastMethodSuccess(HCkBinDataW cHandle);

void CkBinDataW_putLastMethodSuccess(HCkBinDataW cHandle, BOOL newVal);

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of TRUE indicates success, a value of FALSE 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 = TRUE and failure = FALSE.
  • 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 TRUE. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

int CkBinDataW_getNumBytes(HCkBinDataW cHandle);

Introduced in version 9.5.0.51

The number of bytes contained within the object.

Methods

BOOL CkBinDataW_AppendBd(HCkBinDataW cHandle, HCkBinDataW binData);

Introduced in version 9.5.0.62

Appends the contents of another BinData to this object.

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_AppendBinary(HCkBinDataW cHandle, const unsigned char * data);

Introduced in version 9.5.0.51

Appends binary data to the current contents, if any.

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_AppendBom(HCkBinDataW cHandle, const wchar_t *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 TRUE for success, FALSE for failure.

StringBuilder to Bytes (in BinData)

BOOL CkBinDataW_AppendEncoded(HCkBinDataW cHandle, const wchar_t *encData, const wchar_t *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 TRUE for success, FALSE for failure.

Demonstrate Binary Data Encoding Methods

BOOL CkBinDataW_AppendEncodedSb(HCkBinDataW cHandle, HCkStringBuilderW sb, const wchar_t *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 TRUE for success, FALSE for failure.

BOOL CkBinDataW_AppendSb(HCkBinDataW cHandle, HCkStringBuilderW sb, const wchar_t *charset);

Introduced in version 9.5.0.62

Appends the contents of a StringBuilder to this object.

Returns TRUE for success, FALSE for failure.

StringBuilder to Bytes (in BinData)

BOOL CkBinDataW_AppendString(HCkBinDataW cHandle, const wchar_t *str, const wchar_t *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 TRUE for success, FALSE for failure.

Appending Strings to BinData

BOOL CkBinDataW_Clear(HCkBinDataW cHandle);

Introduced in version 9.5.0.51

Clears the contents.

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_ContentsEqual(HCkBinDataW cHandle, HCkBinDataW binData);

Introduced in version 9.5.0.62

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

BOOL CkBinDataW_GetBinary(HCkBinDataW cHandle, const unsigned char * outBytes);

Introduced in version 9.5.0.51

Retrieves the binary data contained within the object.

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_GetBinaryChunk(HCkBinDataW cHandle, int offset, int numBytes, const unsigned char * outBytes);

Introduced in version 9.5.0.51

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

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_GetEncoded(HCkBinDataW cHandle, const wchar_t *encoding, const wchar_t *outStr);

const wchar_t *CkBinDataW_getEncoded(HCkBinDataW cHandle, const wchar_t *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 TRUE for success, FALSE for failure.

Demonstrate Binary Data Encoding Methods

Determine File Type from Binary Content of File

BOOL CkBinDataW_GetEncodedChunk(HCkBinDataW cHandle, int offset, int numBytes, const wchar_t *encoding, const wchar_t *outStr);

const wchar_t *CkBinDataW_getEncodedChunk(HCkBinDataW cHandle, int offset, int numBytes, const wchar_t *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 TRUE for success, FALSE for failure.

Demonstrate Binary Data Encoding Methods

BOOL CkBinDataW_GetEncodedSb(HCkBinDataW cHandle, const wchar_t *encoding, HCkStringBuilderW 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 TRUE for success, FALSE for failure.

Demonstrate Binary Data Encoding Methods

BOOL CkBinDataW_GetString(HCkBinDataW cHandle, const wchar_t *charset, const wchar_t *outStr);

const wchar_t *CkBinDataW_getString(HCkBinDataW cHandle, const wchar_t *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 TRUE for success, FALSE for failure.

Chilkat Supported Character Encodings

BOOL CkBinDataW_LoadBinary(HCkBinDataW cHandle, const unsigned char * data);

Introduced in version 9.5.0.51

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

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_LoadEncoded(HCkBinDataW cHandle, const wchar_t *encData, const wchar_t *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 TRUE for success, FALSE for failure.

BOOL CkBinDataW_LoadFile(HCkBinDataW cHandle, const wchar_t *path);

Introduced in version 9.5.0.51

Loads data from a file.

Returns TRUE for success, FALSE for failure.

BOOL CkBinDataW_RemoveChunk(HCkBinDataW cHandle, int offset, int numBytes);

Introduced in version 9.5.0.51

Removes a chunk of bytes from the binary data.

Demonstrate Binary Data Encoding Methods

BOOL CkBinDataW_SecureClear(HCkBinDataW cHandle);

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 TRUE for success, FALSE for failure.

BOOL CkBinDataW_WriteFile(HCkBinDataW cHandle, const wchar_t *path);

Introduced in version 9.5.0.62

Writes the contents to a file.

Returns TRUE for success, FALSE for failure.