Package org.python.modules
Class binascii
java.lang.Object
org.python.modules.binascii
The binascii.java module contains a number of methods to convert between binary and
various ASCII-encoded binary representations. Normally, you will not use these modules directly
but use wrapper modules like uu or hexbin instead, this module solely exists
because bit-manipulation of large amounts of data is slow in Python.
The binascii.java module defines the following functions:
- a2b_uu (string)
- Convert a single line of uuencoded data back to binary and return the binary data. Lines normally contain 45 (binary) bytes, except for the last line. Line data may be followed by whitespace.
- b2a_uu (data)
- Convert binary data to a line of ASCII characters, the return value is the converted line, including a newline char. The length of data should be at most 45.
- a2b_base64 (string)
- Convert a block of base64 data back to binary and return the binary data. More than one line may be passed at a time.
- b2a_base64 (data)
- Convert binary data to a line of ASCII characters in base64 coding. The return value is the converted line, including a newline char. The length of data should be at most 57 to adhere to the base64 standard.
- a2b_hqx (string)
- Convert binhex4 formatted ASCII data to binary, without doing RLE-decompression. The string should contain a complete number of binary bytes, or (in case of the last portion of the binhex4 data) have the remaining bits zero.
- rledecode_hqx (data)
- Perform RLE-decompression on the data, as per the binhex4 standard. The algorithm uses 0x90 after a byte as a repeat indicator, followed by a count. A count of 0 specifies a byte value of 0x90. The routine returns the decompressed data, unless data input data ends in an orphaned repeat indicator, in which case the Incomplete exception is raised.
- rlecode_hqx (data)
- Perform binhex4 style RLE-compression on data and return the result.
- b2a_hqx (data)
- Perform hexbin4 binary-to-ASCII translation and return the resulting string. The argument should already be RLE-coded, and have a length divisible by 3 (except possibly the last fragment).
- crc_hqx (data, crc)
- Compute the binhex4 crc value of data, starting with an initial crc and returning the result.
- Error
- Exception raised on errors. These are usually programming errors.
- Incomplete
- Exception raised on incomplete data. These are usually not programming errors, but may be handled by reading a little more data and trying again.
- Version:
- binascii.java,v 1.6 1999/02/20 11:37:07 fb Exp
- Author:
- Finn Bock, bckfnn@pipmail.dknet.dk
-
Field Summary
Modifier and TypeFieldDescriptionstatic String
static PyString
static PyString
static final PyString
static PyString
static PyString
static PyString
static PyString
static final PyString
static PyString
static PyString
static PyString
static PyString
static PyString
static final PyObject
static final PyObject
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionstatic PyString
a2b_base64
(PyObject text) Convert a block of base64 data back to binary and return the binary data.static PyString
static PyTuple
Convert binhex4 formatted ASCII data to binary, without doing RLE-decompression.static PyString
static PyString
Convert a single line of uuencoded data back to binary and return the binary data.static PyString
b2a_base64
(PyObject data) Convert binary data to a line of ASCII characters in base64 coding.static PyString
static PyString
Perform hexbin4 binary-to-ASCII translation and return the resulting string.static PyString
static PyString
Convert binary data to a line of ASCII characters, the return value is the converted line, including a newline char.static int
Compute the binhex4 crc value of data, starting with an initial crc and returning the result.static int
static int
static PyObject
static PyString
static PyString
rlecode_hqx
(PyObject data) Perform binhex4 style RLE-compression on data and return the result.static PyString
rledecode_hqx
(PyObject data) Perform RLE-decompression on the data, as per the binhex4 standard.static PyString
-
Field Details
-
__doc__
-
Error
-
Incomplete
-
__doc__a2b_uu
-
__doc__b2a_uu
-
__doc__a2b_base64
-
__doc__b2a_base64
-
__doc__a2b_hqx
-
__doc__rlecode_hqx
-
__doc__b2a_hqx
-
__doc__rledecode_hqx
-
__doc__crc_hqx
-
__doc__b2a_hex
-
a2b_hex$doc
-
__doc__a2b_qp
-
__doc__b2a_qp
-
-
Constructor Details
-
binascii
public binascii()
-
-
Method Details
-
exceptionNamespace
-
a2b_uu
Convert a single line of uuencoded data back to binary and return the binary data. Lines normally contain 45 (binary) bytes, except for the last line. Line data may be followed by whitespace. -
b2a_uu
Convert binary data to a line of ASCII characters, the return value is the converted line, including a newline char. The length of data should be at most 45. -
a2b_base64
Convert a block of base64 data back to binary and return the binary data. More than one line may be passed at a time. -
b2a_base64
Convert binary data to a line of ASCII characters in base64 coding. The return value is the converted line, including a newline char. -
a2b_hqx
Convert binhex4 formatted ASCII data to binary, without doing RLE-decompression. The string should contain a complete number of binary bytes, or (in case of the last portion of the binhex4 data) have the remaining bits zero. -
rlecode_hqx
Perform binhex4 style RLE-compression on data and return the result. -
b2a_hqx
Perform hexbin4 binary-to-ASCII translation and return the resulting string. The argument should already be RLE-coded, and have a length divisible by 3 (except possibly the last fragment). -
rledecode_hqx
Perform RLE-decompression on the data, as per the binhex4 standard. The algorithm uses 0x90 after a byte as a repeat indicator, followed by a count. A count of 0 specifies a byte value of 0x90. The routine returns the decompressed data, unless data input data ends in an orphaned repeat indicator, in which case the Incomplete exception is raised. -
crc_hqx
Compute the binhex4 crc value of data, starting with an initial crc and returning the result. -
crc32
-
crc32
-
b2a_hex
-
hexlify
-
a2b_hex
-
unhexlify
-
a2b_qp
-
b2a_qp
-