CkPython

Demonstrate Binary Data Encoding Methods

Demonstrates binary data encoding methods.

Note: This example requires Chilkat v9.5.0.64 or later.

CkPython

import chilkat

binData = chilkat.CkBinData()

# Append 10 bytes: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09
binData.AppendEncoded("00010203040506070809","hex")

# Show that binData contains 10 bytes.
print("num bytes = " + str(binData.get_NumBytes()))

# Get as base64
print("base64: " + binData.getEncoded("base64"))

# Get a chunk of the binary data.
# The 1st byte is at index 0.
# The output should be "02030405"
offset = 2
numBytes = 4
print("chunk: " + binData.getEncodedChunk(offset,numBytes,"hex"))

# Copy the bytes to a StringBuilder using the base64url encoding
sb = chilkat.CkStringBuilder()
binData.GetEncodedSb("base64url",sb)
print("base64url: " + sb.getAsString())

# Remove a chunk from the binary data
offset = 2
numBytes = 4
binData.RemoveChunk(offset,numBytes)
# The bytes remaining are 00,01,06,07,08,and 09
print("after removing chunk: " + binData.getEncoded("hex"))