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v0.8.1
v0.8.1
https://github.com/python/cpython
Revision b6987b13fecdfbbc3a45e84025754d06ad18fca9 authored by Guido van Rossum on 07 April 1999, 18:32:51 UTC, committed by Guido van Rossum on 07 April 1999, 18:32:51 UTC
before exiting when an error happened. This didn't work right when Python is invoked from a daemon.
1 parent a99c5db
Tip revision: b6987b13fecdfbbc3a45e84025754d06ad18fca9 authored by Guido van Rossum on 07 April 1999, 18:32:51 UTC
Alas, get rid of the Win specific hack to ask the user to press Return
Alas, get rid of the Win specific hack to ask the user to press Return
Tip revision: b6987b1
quopri.py
#! /usr/bin/env python
# Conversions to/from quoted-printable transport encoding as per RFC-1521
# (Dec 1991 version).
ESCAPE = '='
MAXLINESIZE = 76
HEX = '0123456789ABCDEF'
def needsquoting(c, quotetabs):
if c == '\t':
return not quotetabs
return c == ESCAPE or not(' ' <= c <= '~')
def quote(c):
if c == ESCAPE:
return ESCAPE * 2
else:
i = ord(c)
return ESCAPE + HEX[i/16] + HEX[i%16]
def encode(input, output, quotetabs):
while 1:
line = input.readline()
if not line: break
new = ''
last = line[-1:]
if last == '\n': line = line[:-1]
else: last = ''
prev = ''
for c in line:
if needsquoting(c, quotetabs):
c = quote(c)
if len(new) + len(c) >= MAXLINESIZE:
output.write(new + ESCAPE + '\n')
new = ''
new = new + c
prev = c
if prev in (' ', '\t'):
output.write(new + ESCAPE + '\n\n')
else:
output.write(new + '\n')
def decode(input, output):
new = ''
while 1:
line = input.readline()
if not line: break
i, n = 0, len(line)
if n > 0 and line[n-1] == '\n':
partial = 0; n = n-1
# Strip trailing whitespace
while n > 0 and line[n-1] in (' ', '\t'):
n = n-1
else:
partial = 1
while i < n:
c = line[i]
if c <> ESCAPE:
new = new + c; i = i+1
elif i+1 == n and not partial:
partial = 1; break
elif i+1 < n and line[i+1] == ESCAPE:
new = new + ESCAPE; i = i+2
elif i+2 < n and ishex(line[i+1]) and ishex(line[i+2]):
new = new + chr(unhex(line[i+1:i+3])); i = i+3
else: # Bad escape sequence -- leave it in
new = new + c; i = i+1
if not partial:
output.write(new + '\n')
new = ''
if new:
output.write(new)
def ishex(c):
return '0' <= c <= '9' or 'a' <= c <= 'f' or 'A' <= c <= 'F'
def unhex(s):
bits = 0
for c in s:
if '0' <= c <= '9':
i = ord('0')
elif 'a' <= c <= 'f':
i = ord('a')-10
elif 'A' <= c <= 'F':
i = ord('A')-10
else:
break
bits = bits*16 + (ord(c) - i)
return bits
def test():
import sys
import getopt
try:
opts, args = getopt.getopt(sys.argv[1:], 'td')
except getopt.error, msg:
sys.stdout = sys.stderr
print msg
print "usage: quopri [-t | -d] [file] ..."
print "-t: quote tabs"
print "-d: decode; default encode"
sys.exit(2)
deco = 0
tabs = 0
for o, a in opts:
if o == '-t': tabs = 1
if o == '-d': deco = 1
if tabs and deco:
sys.stdout = sys.stderr
print "-t and -d are mutually exclusive"
sys.exit(2)
if not args: args = ['-']
sts = 0
for file in args:
if file == '-':
fp = sys.stdin
else:
try:
fp = open(file)
except IOError, msg:
sys.stderr.write("%s: can't open (%s)\n" % (file, msg))
sts = 1
continue
if deco:
decode(fp, sys.stdout)
else:
encode(fp, sys.stdout, tabs)
if fp is not sys.stdin:
fp.close()
if sts:
sys.exit(sts)
if __name__ == '__main__':
test()
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