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text_file.pyo
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Python Compiled Bytecode
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2008-10-13
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216 lines
# Source Generated with Decompyle++
# File: in.pyo (Python 2.5)
__revision__ = '$Id: text_file.py 29687 2002-11-14 02:25:42Z akuchling $'
from types import *
import sys
import os
import string
class TextFile:
default_options = {
'strip_comments': 1,
'skip_blanks': 1,
'lstrip_ws': 0,
'rstrip_ws': 1,
'join_lines': 0,
'collapse_join': 0 }
def __init__(self, filename = None, file = None, **options):
if filename is None and file is None:
raise RuntimeError, "you must supply either or both of 'filename' and 'file'"
for opt in self.default_options.keys():
if options.has_key(opt):
setattr(self, opt, options[opt])
continue
setattr(self, opt, self.default_options[opt])
for opt in options.keys():
if not self.default_options.has_key(opt):
raise KeyError, "invalid TextFile option '%s'" % opt
continue
if file is None:
self.open(filename)
else:
self.filename = filename
self.file = file
self.current_line = 0
self.linebuf = []
def open(self, filename):
self.filename = filename
self.file = open(self.filename, 'r')
self.current_line = 0
def close(self):
self.file.close()
self.file = None
self.filename = None
self.current_line = None
def gen_error(self, msg, line = None):
outmsg = []
if line is None:
line = self.current_line
outmsg.append(self.filename + ', ')
if type(line) in (ListType, TupleType):
outmsg.append('lines %d-%d: ' % tuple(line))
else:
outmsg.append('line %d: ' % line)
outmsg.append(str(msg))
return string.join(outmsg, '')
def error(self, msg, line = None):
raise ValueError, 'error: ' + self.gen_error(msg, line)
def warn(self, msg, line = None):
sys.stderr.write('warning: ' + self.gen_error(msg, line) + '\n')
def readline(self):
if self.linebuf:
line = self.linebuf[-1]
del self.linebuf[-1]
return line
buildup_line = ''
while None:
line = self.file.readline()
if line == '':
line = None
if self.strip_comments and line:
pos = string.find(line, '#')
if pos == -1:
pass
elif pos == 0 or line[pos - 1] != '\\':
if not line[-1] == '\n' or '\n':
pass
eol = ''
line = line[0:pos] + eol
if string.strip(line) == '':
continue
else:
line = string.replace(line, '\\#', '#')
if self.join_lines and buildup_line:
if line is None:
self.warn('continuation line immediately precedes end-of-file')
return buildup_line
if self.collapse_join:
line = string.lstrip(line)
line = buildup_line + line
if type(self.current_line) is ListType:
self.current_line[1] = self.current_line[1] + 1
else:
self.current_line = [
self.current_line,
self.current_line + 1]
elif line is None:
return None
if type(self.current_line) is ListType:
self.current_line = self.current_line[1] + 1
else:
self.current_line = self.current_line + 1
if self.lstrip_ws and self.rstrip_ws:
line = string.strip(line)
elif self.lstrip_ws:
line = string.lstrip(line)
elif self.rstrip_ws:
line = string.rstrip(line)
if (line == '' or line == '\n') and self.skip_blanks:
continue
if self.join_lines:
if line[-1] == '\\':
buildup_line = line[:-1]
continue
if line[-2:] == '\\\n':
buildup_line = line[0:-2] + '\n'
continue
return line
continue
return None
def readlines(self):
lines = []
while None:
line = self.readline()
if line is None:
return lines
continue
return None
def unreadline(self, line):
self.linebuf.append(line)
if __name__ == '__main__':
test_data = '# test file\n\nline 3 \\\n# intervening comment\n continues on next line\n'
result1 = map((lambda x: x + '\n'), string.split(test_data, '\n')[0:-1])
result2 = [
'\n',
'line 3 \\\n',
' continues on next line\n']
result3 = [
'# test file\n',
'line 3 \\\n',
'# intervening comment\n',
' continues on next line\n']
result4 = [
'line 3 \\',
' continues on next line']
result5 = [
'line 3 continues on next line']
result6 = [
'line 3 continues on next line']
def test_input(count, description, file, expected_result):
result = file.readlines()
if result == expected_result:
print 'ok %d (%s)' % (count, description)
else:
print 'not ok %d (%s):' % (count, description)
print '** expected:'
print expected_result
print '** received:'
print result
filename = 'test.txt'
out_file = open(filename, 'w')
out_file.write(test_data)
out_file.close()
in_file = TextFile(filename, strip_comments = 0, skip_blanks = 0, lstrip_ws = 0, rstrip_ws = 0)
test_input(1, 'no processing', in_file, result1)
in_file = TextFile(filename, strip_comments = 1, skip_blanks = 0, lstrip_ws = 0, rstrip_ws = 0)
test_input(2, 'strip comments', in_file, result2)
in_file = TextFile(filename, strip_comments = 0, skip_blanks = 1, lstrip_ws = 0, rstrip_ws = 0)
test_input(3, 'strip blanks', in_file, result3)
in_file = TextFile(filename)
test_input(4, 'default processing', in_file, result4)
in_file = TextFile(filename, strip_comments = 1, skip_blanks = 1, join_lines = 1, rstrip_ws = 1)
test_input(5, 'join lines without collapsing', in_file, result5)
in_file = TextFile(filename, strip_comments = 1, skip_blanks = 1, join_lines = 1, rstrip_ws = 1, collapse_join = 1)
test_input(6, 'join lines with collapsing', in_file, result6)
os.remove(filename)