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Commit a62c5d2e authored by Andy Cedilnik's avatar Andy Cedilnik
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ENH: Initial import of Base64

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Base64.c 0 → 100644
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View file @ a62c5d2e
/*=========================================================================
Program: KWSys - Kitware System Library
Module: Base64.c
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#define KWSYS_IN_PROCESS_C
#include <Base64.h>
/*--------------------------------------------------------------------------*/
static const unsigned char kwsysBase64EncodeTable[65] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
/*--------------------------------------------------------------------------*/
static const unsigned char kwsysBase64DecodeTable[256] =
{
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0x3E,0xFF,0xFF,0xFF,0x3F,
0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,
0x3C,0x3D,0xFF,0xFF,0xFF,0x00,0xFF,0xFF,
0xFF,0x00,0x01,0x02,0x03,0x04,0x05,0x06,
0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,
0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,
0x17,0x18,0x19,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,
0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,
0x31,0x32,0x33,0xFF,0xFF,0xFF,0xFF,0xFF,
/*------------------------------------*/
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
};
/*--------------------------------------------------------------------------*/
static unsigned char kwsysBase64EncodeChar(unsigned char c)
{
return kwsysBase64EncodeTable[c];
}
/*--------------------------------------------------------------------------*/
static unsigned char kwsysBase64DecodeChar(unsigned char c)
{
return kwsysBase64DecodeTable[c];
}
/*--------------------------------------------------------------------------*/
/* Encode 3 bytes into a 4 byte string. */
void kwsysBase64_Encode3(const unsigned char *src, unsigned char *dest)
{
dest[0] = kwsysBase64EncodeChar((src[0] >> 2) & 0x3F);
dest[1] = kwsysBase64EncodeChar(((src[0] << 4) & 0x30)|((src[1] >> 4) & 0x0F));
dest[2] = kwsysBase64EncodeChar(((src[1] << 2) & 0x3C)|((src[2] >> 6) & 0x03));
dest[3] = kwsysBase64EncodeChar(src[2] & 0x3F);
}
/*--------------------------------------------------------------------------*/
/* Encode 2 bytes into a 4 byte string. */
void kwsysBase64_Encode2(const unsigned char *src, unsigned char *dest)
{
dest[0] = kwsysBase64EncodeChar((src[0] >> 2) & 0x3F);
dest[1] = kwsysBase64EncodeChar(((src[0] << 4) & 0x30)|((src[1] >> 4) & 0x0F));
dest[2] = kwsysBase64EncodeChar(((src[1] << 2) & 0x3C)|((src[2] >> 6) & 0x03));
dest[3] = '=';
}
/*--------------------------------------------------------------------------*/
/* Encode 1 bytes into a 4 byte string. */
void kwsysBase64_Encode1(const unsigned char *src, unsigned char *dest)
{
dest[0] = kwsysBase64EncodeChar((src[0] >> 2) & 0x3F);
dest[1] = kwsysBase64EncodeChar(((src[0] << 4) & 0x30));
dest[2] = '=';
dest[3] = '=';
}
/*--------------------------------------------------------------------------*/
/* Encode 'length' bytes from the input buffer and store the
encoded stream into the output buffer. Return the length of the encoded
buffer (output). Note that the output buffer must be allocated by the caller
(length * 1.5 should be a safe estimate). If 'mark_end' is true than an
extra set of 4 bytes is added to the end of the stream if the input is a
multiple of 3 bytes. These bytes are invalid chars and therefore they will
stop the decoder thus enabling the caller to decode a stream without
actually knowing how much data to expect (if the input is not a multiple of
3 bytes then the extra padding needed to complete the encode 4 bytes will
stop the decoding anyway). */
unsigned long kwsysBase64_Encode(const unsigned char *input,
unsigned long length, unsigned char *output, int mark_end)
{
const unsigned char *ptr = input;
const unsigned char *end = input + length;
unsigned char *optr = output;
/* Encode complete triplet */
while ((end - ptr) >= 3)
{
kwsysBase64_Encode3(ptr, optr);
ptr += 3;
optr += 4;
}
/* Encodes a 2-byte ending into 3 bytes and 1 pad byte and writes. */
if (end - ptr == 2)
{
kwsysBase64_Encode2(ptr, optr);
optr += 4;
}
/* Encodes a 1-byte ending into 2 bytes and 2 pad bytes */
else if (end - ptr == 1)
{
kwsysBase64_Encode1(ptr, optr);
optr += 4;
}
/* Do we need to mark the end */
else if (mark_end)
{
optr[0] = optr[1] = optr[2] = optr[3] = '=';
optr += 4;
}
return optr - output;
}
/*--------------------------------------------------------------------------*/
/* Decode 4 bytes into a 3 byte string. */
int kwsysBase64_Decode3(const unsigned char *src, unsigned char *dest)
{
unsigned char d0, d1, d2, d3;
d0 = kwsysBase64DecodeChar(src[0]);
d1 = kwsysBase64DecodeChar(src[1]);
d2 = kwsysBase64DecodeChar(src[2]);
d3 = kwsysBase64DecodeChar(src[3]);
/* Make sure all characters were valid */
if (d0 == 0xFF || d1 == 0xFF || d2 == 0xFF || d3 == 0xFF)
{
return 0;
}
/* Decode the 3 bytes */
dest[0] = ((d0 << 2) & 0xFC) | ((d1 >> 4) & 0x03);
dest[1] = ((d1 << 4) & 0xF0) | ((d2 >> 2) & 0x0F);
dest[2] = ((d2 << 6) & 0xC0) | ((d3 >> 0) & 0x3F);
/* Return the number of bytes actually decoded */
if (src[2] == '=')
{
return 1;
}
if (src[3] == '=')
{
return 2;
}
return 3;
}
/*--------------------------------------------------------------------------*/
/* Decode bytes from the input buffer and store the decoded stream
into the output buffer until 'length' bytes have been decoded. Return the
real length of the decoded stream (which should be equal to 'length'). Note
that the output buffer must be allocated by the caller. If
'max_input_length' is not null, then it specifies the number of encoded
bytes that should be at most read from the input buffer. In that case the
'length' parameter is ignored. This enables the caller to decode a stream
without actually knowing how much decoded data to expect (of course, the
buffer must be large enough). */
unsigned long kwsysBase64_Decode(const unsigned char *input,
unsigned long length, unsigned char *output, unsigned long max_input_length)
{
const unsigned char *ptr = input;
unsigned char *optr = output;
/* Decode complete triplet */
if (max_input_length)
{
const unsigned char *end = input + max_input_length;
while (ptr < end)
{
int len = kwsysBase64_Decode3(ptr, optr);
optr += len;
if(len < 3)
{
return optr - output;
}
ptr += 4;
}
}
else
{
unsigned char *oend = output + length;
while ((oend - optr) >= 3)
{
int len = kwsysBase64_Decode3(ptr, optr);
optr += len;
if(len < 3)
{
return optr - output;
}
ptr += 4;
}
/* Decode the last triplet */
if (oend - optr == 2)
{
unsigned char temp[3];
int len = kwsysBase64_Decode3(ptr, temp);
optr[0] = temp[0];
optr[1] = temp[1];
optr += (len > 2 ? 2 : len);
}
else if (oend - optr == 1)
{
unsigned char temp[3];
int len = kwsysBase64_Decode3(ptr, temp);
optr[0] = temp[0];
optr += (len > 2 ? 2 : len);
}
}
return optr - output;
}
Base64.h.in 0 → 100644
+ 120
− 0
View file @ a62c5d2e
/*=========================================================================
Program: KWSys - Kitware System Library
Module: Base64.h.in
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef @KWSYS_NAMESPACE@_Base64_h
#define @KWSYS_NAMESPACE@_Base64_h
/* Redefine all public interface symbol names to be in the proper
namespace. These macros are used internally to kwsys only, and are
not visible to user code. Use kwsysHeaderDump.pl to reproduce
these macros after making changes to the interface. */
#define kwsys(x) @KWSYS_NAMESPACE@##x
#define kwsysBase64 kwsys(Base64)
#define kwsysBase64_Encode1 kwsys(Base64_Encode1)
#define kwsysBase64_Encode2 kwsys(Base64_Encode2)
#define kwsysBase64_Encode3 kwsys(Base64_Encode3)
#define kwsysBase64_Encode kwsys(Base64_Encode)
#define kwsysBase64_Decode kwsys(Base64_Decode)
#define kwsysBase64_Decode3 kwsys(Base64_Decode3)
#if defined(__cplusplus)
extern "C"
{
#endif
/* Encode 3 bytes into a 4 byte string. */
void kwsysBase64_Encode3(const unsigned char *src, unsigned char *dest);
/* Encode 2 bytes into a 4 byte string. */
void kwsysBase64_Encode2(const unsigned char *src, unsigned char *dest);
/* Encode 1 bytes into a 4 byte string. */
void kwsysBase64_Encode1(const unsigned char *src, unsigned char *dest);
/* Encode 'length' bytes from the input buffer and store the
encoded stream into the output buffer. Return the length of the encoded
buffer (output). Note that the output buffer must be allocated by the caller
(length * 1.5 should be a safe estimate). If 'mark_end' is true than an
extra set of 4 bytes is added to the end of the stream if the input is a
multiple of 3 bytes. These bytes are invalid chars and therefore they will
stop the decoder thus enabling the caller to decode a stream without
actually knowing how much data to expect (if the input is not a multiple of
3 bytes then the extra padding needed to complete the encode 4 bytes will
stop the decoding anyway). */
unsigned long kwsysBase64_Encode(const unsigned char *input,
unsigned long length, unsigned char *output, int mark_end);
/* Decode 4 bytes into a 3 byte string. */
int kwsysBase64_Decode3(const unsigned char *src, unsigned char *dest);
/* Decode bytes from the input buffer and store the decoded stream
into the output buffer until 'length' bytes have been decoded. Return the
real length of the decoded stream (which should be equal to 'length'). Note
that the output buffer must be allocated by the caller. If
'max_input_length' is not null, then it specifies the number of encoded
bytes that should be at most read from the input buffer. In that case the
'length' parameter is ignored. This enables the caller to decode a stream
without actually knowing how much decoded data to expect (of course, the
buffer must be large enough). */
unsigned long kwsysBase64_Decode(const unsigned char *input,
unsigned long length, unsigned char *output, unsigned long max_input_length);
#if defined(__cplusplus)
} /* extern "C" */
#endif
/* If we are building a kwsysBase64 .c file, let it use these macros.
Otherwise, undefine them to keep the namespace clean. */
#if !defined(KWSYS_IN_PROCESS_C)
# undef kwsys
# undef kwsysBase64
# undef kwsysBase64_s
# undef kwsysBase64_New
# undef kwsysBase64_Delete
# undef kwsysBase64_SetCommand
# undef kwsysBase64_SetTimeout
# undef kwsysBase64_State_Starting
# undef kwsysBase64_State_Error
# undef kwsysBase64_State_Exception
# undef kwsysBase64_State_Executing
# undef kwsysBase64_State_Exited
# undef kwsysBase64_State_Expired
# undef kwsysBase64_State_Killed
# undef kwsysBase64_GetState
# undef kwsysBase64_State_e
# undef kwsysBase64_Exception_None
# undef kwsysBase64_Exception_Fault
# undef kwsysBase64_Exception_Illegal
# undef kwsysBase64_Exception_Interrupt
# undef kwsysBase64_Exception_Numerical
# undef kwsysBase64_Exception_Other
# undef kwsysBase64_GetExitException
# undef kwsysBase64_Exception_e
# undef kwsysBase64_GetExitCode
# undef kwsysBase64_GetExitValue
# undef kwsysBase64_GetErrorString
# undef kwsysBase64_Execute
# undef kwsysBase64_WaitForData
# undef kwsysBase64_Pipes_e
# undef kwsysBase64_Pipe_STDOUT
# undef kwsysBase64_Pipe_STDERR
# undef kwsysBase64_Pipe_Timeout
# undef kwsysBase64_WaitForExit
# undef kwsysBase64_Kill
#endif
#endif
CMakeLists.txt
+ 8
− 0
View file @ a62c5d2e
...@@ -211,6 +211,9 @@ ENDFOREACH(c) ...@@ -211,6 +211,9 @@ ENDFOREACH(c)
IF(KWSYS_USE_Process) IF(KWSYS_USE_Process)
SET(KWSYS_H_FILES ${KWSYS_H_FILES} Process) SET(KWSYS_H_FILES ${KWSYS_H_FILES} Process)
ENDIF(KWSYS_USE_Process) ENDIF(KWSYS_USE_Process)
IF(KWSYS_USE_Base64)
SET(KWSYS_H_FILES ${KWSYS_H_FILES} Base64)
ENDIF(KWSYS_USE_Base64)
#----------------------------------------------------------------------------- #-----------------------------------------------------------------------------
# Build a list of sources for the library based on components that are # Build a list of sources for the library based on components that are
...@@ -230,6 +233,11 @@ IF(KWSYS_USE_Process) ...@@ -230,6 +233,11 @@ IF(KWSYS_USE_Process)
ENDIF(NOT UNIX) ENDIF(NOT UNIX)
ENDIF(KWSYS_USE_Process) ENDIF(KWSYS_USE_Process)
# Add proper sources for Base64 encoding
IF(KWSYS_USE_Base64)
SET(KWSYS_SRCS ${KWSYS_SRCS} Base64.c)
ENDIF(KWSYS_USE_Base64)
# Configure headers of C++ classes and construct the list of sources. # Configure headers of C++ classes and construct the list of sources.
FOREACH(c ${KWSYS_CLASSES}) FOREACH(c ${KWSYS_CLASSES})
# Add this source to the list of source files for the library. # Add this source to the list of source files for the library.
......
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