BinData Unicode C Reference Documentation
BinData
Current Version: 11.0.0
Container for binary data. Provides methods for getting, setting, appending, etc. in binary and string encoded formats.
Create/Dispose
HCkBinDataW instance = CkBinDataW_Create(); // ... CkBinDataW_Dispose(instance);
Creates an instance of the HCkBinDataW object and returns a handle ("void *" pointer). The handle is passed in the 1st argument for the functions listed on this page.
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
DebugLogFilePath
void CkBinDataW_putDebugLogFilePath(HCkBinDataW cHandle, const wchar_t *newVal);
const wchar_t *CkBinDataW_debugLogFilePath(HCkBinDataW cHandle);
If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.
Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.
Possible causes of hangs include:
- A timeout property set to 0, indicating an infinite timeout.
- A hang occurring within an event callback in the application code.
- An internal bug in the Chilkat code causing the hang.
LastErrorHtml
const wchar_t *CkBinDataW_lastErrorHtml(HCkBinDataW cHandle);
Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastErrorText
const wchar_t *CkBinDataW_lastErrorText(HCkBinDataW cHandle);
Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
LastErrorXml
const wchar_t *CkBinDataW_lastErrorXml(HCkBinDataW cHandle);
Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastMethodSuccess
void CkBinDataW_putLastMethodSuccess(HCkBinDataW cHandle, BOOL newVal);
Indicates the success or failure of the most recent method call: TRUE means success, FALSE means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.
NumBytes
The number of bytes contained within the object.
topVerboseLogging
void CkBinDataW_putVerboseLogging(HCkBinDataW cHandle, BOOL newVal);
If set to TRUE, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is FALSE. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.
Version
const wchar_t *CkBinDataW_version(HCkBinDataW cHandle);
Methods
AppendBd
Appends the contents of another BinData to this object.
Returns TRUE for success, FALSE for failure.
topAppendBinary Deprecated
Appends binary data to the current contents, if any.
Returns TRUE for success, FALSE for failure.
topAppendBom
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.
topAppendByte
Appends a single byte. The byteValue should be a value from 0 to 255.
Returns TRUE for success, FALSE for failure.
topAppendCountedString
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 TRUE, 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 TRUE for success, FALSE for failure.
topAppendData Deprecated
AppendEncoded
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.
AppendEncodedSb
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.
AppendInt2
Appends a 16-bit integer (2 bytes). If littleEndian is TRUE, then the integer bytes are appended in little-endian byte order, otherwise big-endian byte order is used.
Returns TRUE for success, FALSE for failure.
AppendInt4
Appends a 32-bit integer (4 bytes). If littleEndian is TRUE, then the integer bytes are appended in little-endian byte order, otherwise big-endian byte order is used.
Returns TRUE for success, FALSE for failure.
AppendPadded
Appends a string to this object, padded to the fieldLen with NULL or SPACE chars. If padWithSpace is TRUE, then SPACE chars are used and the string is not null-terminated. If fieldLen is FALSE, 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 FALSE to indicate failure and nothing is appended.
Returns TRUE for success, FALSE for failure.
AppendSb
Appends the contents of a StringBuilder to this object.
Returns TRUE for success, FALSE for failure.
topAppendString
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.
ByteSwap
Does either 16-bit or 32-bit byte swapping of the entire contents. If size equals 16, then swaps in 2 bytes (e.g., 0x1234 → 0x3412). If size equals 32, then swaps 4 bytes (e.g., 0x12345678 → 0x78563412)
Returns TRUE for success, FALSE for failure.
topCharsetConvert
This method converts the character encoding of an object's contents from one format to another, such as from Windows-1252 to UTF-8. The allOrNone parameter determines error handling for unrepresentable bytes. If allOrNone is TRUE, the object's contents remain unchanged when errors occur. If FALSE, error bytes are discarded. The method returns TRUE if successful and FALSE if errors occur.
Returns TRUE for success, FALSE for failure.
topClear
ContentsEqual
Return TRUE if the contents of this object equals the contents of binData.
FindString
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.
topGetBinary Deprecated
Retrieves the binary data contained within the object.
Returns TRUE for success, FALSE for failure.
topGetBinaryChunk Deprecated
Retrieves a chunk of the binary data contained within the object.
Returns TRUE for success, FALSE for failure.
topGetByte
Returns the value of the byte at the given index. The returned value is an integer from 0 to 255.
Returns TRUE for success, FALSE for failure.
topGetData Deprecated
GetDataChunk Deprecated
GetEncoded
const wchar_t *CkBinDataW_getEncoded(HCkBinDataW cHandle, const wchar_t *encoding);
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.
GetEncodedChunk
const wchar_t *CkBinDataW_getEncodedChunk(HCkBinDataW cHandle, int offset, int numBytes, const wchar_t *encoding);
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.
GetEncodedSb
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.
GetHash
const wchar_t *CkBinDataW_getHash(HCkBinDataW cHandle, const wchar_t *algorithm, const wchar_t *encoding);
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 TRUE for success, FALSE for failure.
topGetInt2
Returns the value of the 16-bit signed integer stored in big-endian or little-endian byte ordering at the given index.
topGetInt4
Returns the value of the 32-bit signed integer stored in big-endian or little-endian byte ordering at the given index.
topGetString
const wchar_t *CkBinDataW_getString(HCkBinDataW cHandle, const wchar_t *charset);
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.
GetTextChunk
const wchar_t *CkBinDataW_getTextChunk(HCkBinDataW cHandle, int startIdx, int numBytes, const wchar_t *charset);
Returns numBytes bytes starting at startIdx. The bytes are interpreted according to charset (for example, "utf-8", "ansi", "utf-16", "windows-1252", etc.)
Returns TRUE for success, FALSE for failure.
topGetUInt2
Returns the value of the 16-bit unsigned integer stored in big-endian or little-endian byte ordering at the given index.
topGetUInt4
Returns the value of the 32-bit unsigned integer stored in big-endian or little-endian byte ordering at the given index.
topIsValidUtf8
Returns TRUE if this object contains valid utf-8 byte sequences. Any invalid byte sequence that is not valid utf-8 will cause this function to return FALSE.
Returns TRUE for success, FALSE for failure.
topLoadBinary Deprecated
Loads binary data and replaces the current contents, if any.
Returns TRUE for success, FALSE for failure.
topLoadEncoded
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.
topLoadFile
RemoveByteVal
Removes bytes having a specified value (0-255). For example, to remove all null bytes, pass 0 in value.
topRemoveChunk
SecureClear
Securely clears the contents by writing 0 bytes to the memory prior to deallocating the internal memory.
Returns TRUE for success, FALSE for failure.
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