CkPython

StringBuilder to Bytes (in BinData)

Demonstrates converting a string to bytes of a particular character encoding.

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

CkPython

import sys
import chilkat

success = False

# This initial step gets string data to be used in this example from a live URL.
# It assumes Chilkat HTTP API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# Use utf-8 for strings passed into and out of Chilkat.
glob = chilkat.CkGlobal()
glob.put_DefaultUtf8(True)

http = chilkat.CkHttp()
http.put_VerboseLogging(True)
sbJson = chilkat.CkStringBuilder()
success = http.QuickGetSb("https://www.chilkatsoft.com/exampleData/greekAlphabet.json",sbJson)
if (not success):
    print(http.lastErrorText())
    sys.exit()

sbGreek = chilkat.CkStringBuilder()
json = chilkat.CkJsonObject()
json.LoadSb(sbJson)

# The JSON contains this:

# 	{ 
# 	  "greekAlphabet": "Α α Β β Γ γ Δ δ Ε ε Ζ ζ Η η Θ θ Ι ι Κ κ Λ λ Μ μ Ν ν Ξ ξ Ο ο Π π Ρ ρ Σ σ ς Τ τ Υ υ Φ φ Χ χ Ψ ψ Ω ω"
# 	} 

greekAlphabet = json.stringOf("greekAlphabet")
sbGreek.Append(greekAlphabet)

# Append the Windows-1253 represention of the string..
# In this encoding, each Greek char is one byte per char.
binWindows1253 = chilkat.CkBinData()
binWindows1253.AppendSb(sbGreek,"windows-1253")
# Save to a Windows-1253 text file:
binWindows1253.WriteFile("qa_output/greek_win1253.txt")

# Show the bytes in the quoted-printable format so we can easily see the Windows-1253 byte values.
print(binWindows1253.getEncoded("qp"))
print("--------------------------------")

# The result is shown here:
# 	=C1 =E1 =C2 =E2 =C3 =E3 =C4 =E4 =C5 =E5 =C6 =E6 =C7 =E7 =C8 =E8 =C9 =E9 =CA=
# 	 =EA =CB =EB =CC =EC =CD =ED =CE =EE =CF =EF =D0 =F0 =D1 =F1 =D3 =F3 =F2 =
# 	=D4 =F4 =D5 =F5 =D6 =F6 =D7 =F7 =D8 =F8 =D9 =F9

# Append the utf-8 represention of the string..
binUtf8 = chilkat.CkBinData()
binUtf8.AppendBom("utf-8")
binUtf8.AppendSb(sbGreek,"utf-8")
# Save to a utf-8 text file:
binUtf8.WriteFile("qa_output/greek_utf8.txt")
# Show the bytes in the quoted-printable format so we can easily see the utf-8 char representations.
print(binUtf8.getEncoded("qp"))

print("--------------------------------")

# These are the utf-8 bytes shown in quoted-printable encoding:
# 	=EF=BB=BF=CE=91 =CE=B1 =CE=92 =CE=B2 =CE=93 =CE=B3 =CE=94 =CE=B4 =CE=95 =CE=
# 	=B5 =CE=96 =CE=B6 =CE=97 =CE=B7 =CE=98 =CE=B8 =CE=99 =CE=B9 =CE=9A =CE=BA =
# 	=CE=9B =CE=BB =CE=9C =CE=BC =CE=9D =CE=BD =CE=9E =CE=BE =CE=9F =CE=BF =CE=
# 	=A0 =CF=80 =CE=A1 =CF=81 =CE=A3 =CF=83 =CF=82 =CE=A4 =CF=84 =CE=A5 =CF=85 =
# 	=CE=A6 =CF=86 =CE=A7 =CF=87 =CE=A8 =CF=88 =CE=A9 =CF=89

# Append the utf-16 (little endian) represention of the string..
binUtf16 = chilkat.CkBinData()
binUtf16.AppendBom("utf-16")
binUtf16.AppendSb(sbGreek,"utf-16")
# Save to a utf-16 text file:
binUtf16.WriteFile("qa_output/greek_utf16.txt")
print(binUtf16.getEncoded("qp"))

# These are the utf-16 bytes shown in quoted-printable encoding:
# 	=FF=FE=91=03 =00=B1=03 =00=92=03 =00=B2=03 =00=93=03 =00=B3=03 =00=94=03 =
# 	=00=B4=03 =00=95=03 =00=B5=03 =00=96=03 =00=B6=03 =00=97=03 =00=B7=03 =00=
# 	=98=03 =00=B8=03 =00=99=03 =00=B9=03 =00=9A=03 =00=BA=03 =00=9B=03 =00=BB=
# 	=03 =00=9C=03 =00=BC=03 =00=9D=03 =00=BD=03 =00=9E=03 =00=BE=03 =00=9F=03 =
# 	=00=BF=03 =00=A0=03 =00=C0=03 =00=A1=03 =00=C1=03 =00=A3=03 =00=C3=03 =00=
# 	=C2=03 =00=A4=03 =00=C4=03 =00=A5=03 =00=C5=03 =00=A6=03 =00=C6=03 =00=A7=
# 	=03 =00=C7=03 =00=A8=03 =00=C8=03 =00=A9=03 =00=C9=03