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111 lines
4.0 KiB
C
111 lines
4.0 KiB
C
3 weeks ago
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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing#kwsys for details. */
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#ifndef vtksys_Base64_h
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#define vtksys_Base64_h
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#include <vtksys/Configure.h>
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#include <stddef.h> /* size_t */
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/* Redefine all public interface symbol names to be in the proper
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namespace. These macros are used internally to kwsys only, and are
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not visible to user code. Use kwsysHeaderDump.pl to reproduce
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these macros after making changes to the interface. */
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#if !defined(KWSYS_NAMESPACE)
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# define kwsys_ns(x) vtksys##x
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# define kwsysEXPORT vtksys_EXPORT
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#endif
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#if !vtksys_NAME_IS_KWSYS
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# define kwsysBase64 kwsys_ns(Base64)
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# define kwsysBase64_Decode kwsys_ns(Base64_Decode)
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# define kwsysBase64_Decode3 kwsys_ns(Base64_Decode3)
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# define kwsysBase64_Encode kwsys_ns(Base64_Encode)
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# define kwsysBase64_Encode1 kwsys_ns(Base64_Encode1)
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# define kwsysBase64_Encode2 kwsys_ns(Base64_Encode2)
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# define kwsysBase64_Encode3 kwsys_ns(Base64_Encode3)
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#endif
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* Encode 3 bytes into a 4 byte string.
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*/
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kwsysEXPORT void kwsysBase64_Encode3(const unsigned char* src,
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unsigned char* dest);
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/**
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* Encode 2 bytes into a 4 byte string.
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*/
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kwsysEXPORT void kwsysBase64_Encode2(const unsigned char* src,
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unsigned char* dest);
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/**
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* Encode 1 bytes into a 4 byte string.
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*/
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kwsysEXPORT void kwsysBase64_Encode1(const unsigned char* src,
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unsigned char* dest);
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/**
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* Encode 'length' bytes from the input buffer and store the encoded
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* stream into the output buffer. Return the length of the encoded
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* buffer (output). Note that the output buffer must be allocated by
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* the caller (length * 1.5 should be a safe estimate). If 'mark_end'
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* is true than an extra set of 4 bytes is added to the end of the
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* stream if the input is a multiple of 3 bytes. These bytes are
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* invalid chars and therefore they will stop the decoder thus
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* enabling the caller to decode a stream without actually knowing how
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* much data to expect (if the input is not a multiple of 3 bytes then
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* the extra padding needed to complete the encode 4 bytes will stop
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* the decoding anyway).
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*/
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kwsysEXPORT size_t kwsysBase64_Encode(const unsigned char* input,
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size_t length, unsigned char* output,
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int mark_end);
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/**
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* Decode 4 bytes into a 3 byte string. Returns the number of bytes
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* actually decoded.
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*/
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kwsysEXPORT int kwsysBase64_Decode3(const unsigned char* src,
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unsigned char* dest);
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/**
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* Decode bytes from the input buffer and store the decoded stream
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* into the output buffer until 'length' bytes have been decoded.
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* Return the real length of the decoded stream (which should be equal
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* to 'length'). Note that the output buffer must be allocated by the
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* caller. If 'max_input_length' is not null, then it specifies the
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* number of encoded bytes that should be at most read from the input
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* buffer. In that case the 'length' parameter is ignored. This
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* enables the caller to decode a stream without actually knowing how
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* much decoded data to expect (of course, the buffer must be large
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* enough).
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*/
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kwsysEXPORT size_t kwsysBase64_Decode(const unsigned char* input,
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size_t length, unsigned char* output,
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size_t max_input_length);
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#if defined(__cplusplus)
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} /* extern "C" */
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#endif
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/* If we are building a kwsys .c or .cxx file, let it use these macros.
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Otherwise, undefine them to keep the namespace clean. */
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#if !defined(KWSYS_NAMESPACE)
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# undef kwsys_ns
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# undef kwsysEXPORT
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# if !vtksys_NAME_IS_KWSYS
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# undef kwsysBase64
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# undef kwsysBase64_Decode
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# undef kwsysBase64_Decode3
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# undef kwsysBase64_Encode
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# undef kwsysBase64_Encode1
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# undef kwsysBase64_Encode2
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# undef kwsysBase64_Encode3
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# endif
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#endif
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#endif
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