Mass Deface prevline dance. thisline = EMPTYSTRING.join(outline) while len(thisline) > MAXLINESIZE: # Don't forget to include the soft line break `=' sign in the # length calculation! write(thisline[:MAXLINESIZE-1], lineEnd='=\n') thisline = thisline[MAXLINESIZE-1:] # Write out the current line prevline = thisline # Write out the last line, without a trailing newline if prevline is not None: write(prevline, lineEnd=stripped) def encodestring(s, quotetabs = 0, header = 0): if b2a_qp is not None: return b2a_qp(s, quotetabs = quotetabs, header = header) from cStringIO import StringIO infp = StringIO(s) outfp = StringIO() encode(infp, outfp, quotetabs, header) return outfp.getvalue() def decode(input, output, header = 0): """Read 'input', apply quoted-printable decoding, and write to 'output'. 'input' and 'output' are files with readline() and write() methods. If 'header' is true, decode underscore as space (per RFC 1522).""" if a2b_qp is not None: data = input.read() odata = a2b_qp(data, header = header) output.write(odata) return 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\r": n = n-1 else: partial = 1 while i < n: c = line[i] if c == '_' and header: new = new + ' '; i = i+1 elif 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 decodestring(s, header = 0): if a2b_qp is not None: return a2b_qp(s, header = header) from cStringIO import StringIO infp = StringIO(s) outfp = StringIO() decode(infp, outfp, header = header) return outfp.getvalue() # Other helper functions def ishex(c): """Return true if the character 'c' is a hexadecimal digit.""" return '0' <= c <= '9' or 'a' <= c <= 'f' or 'A' <= c <= 'F' def unhex(s): """Get the integer value of a hexadecimal number.""" 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 main(): 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__': main()