| paul@6 | 1 | #!/usr/bin/env python |
| paul@6 | 2 | |
| paul@6 | 3 | """ |
| paul@6 | 4 | File objects. |
| paul@6 | 5 | |
| paul@529 | 6 | Copyright (C) 2015, 2016, 2017 Paul Boddie <paul@boddie.org.uk> |
| paul@6 | 7 | |
| paul@6 | 8 | This program is free software; you can redistribute it and/or modify it under |
| paul@6 | 9 | the terms of the GNU General Public License as published by the Free Software |
| paul@6 | 10 | Foundation; either version 3 of the License, or (at your option) any later |
| paul@6 | 11 | version. |
| paul@6 | 12 | |
| paul@6 | 13 | This program is distributed in the hope that it will be useful, but WITHOUT |
| paul@6 | 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| paul@6 | 15 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
| paul@6 | 16 | details. |
| paul@6 | 17 | |
| paul@6 | 18 | You should have received a copy of the GNU General Public License along with |
| paul@6 | 19 | this program. If not, see <http://www.gnu.org/licenses/>. |
| paul@6 | 20 | """ |
| paul@6 | 21 | |
| paul@529 | 22 | from __builtins__.stream import filestream |
| paul@529 | 23 | from native import fopen, fread |
| paul@347 | 24 | |
| paul@347 | 25 | class file(filestream): |
| paul@173 | 26 | |
| paul@173 | 27 | "A file abstraction." |
| paul@173 | 28 | |
| paul@392 | 29 | def __init__(self, filename, mode="r", encoding=None, bufsize=1024): |
| paul@347 | 30 | |
| paul@392 | 31 | """ |
| paul@392 | 32 | Open the file with the given 'filename' using the given access 'mode', |
| paul@392 | 33 | any specified 'encoding', and the given 'bufsize'. |
| paul@392 | 34 | """ |
| paul@347 | 35 | |
| paul@392 | 36 | get_using(filestream.__init__, self)(encoding, bufsize) |
| paul@356 | 37 | self.__data__ = fopen(filename, mode) |
| paul@436 | 38 | self.buffered = "" |
| paul@436 | 39 | |
| paul@436 | 40 | def _get_data(self): |
| paul@436 | 41 | |
| paul@436 | 42 | "Get data from the file." |
| paul@436 | 43 | |
| paul@436 | 44 | if self.buffered: |
| paul@436 | 45 | s = self.buffered |
| paul@436 | 46 | self.buffered = "" |
| paul@436 | 47 | else: |
| paul@436 | 48 | s = fread(self.__data__, self.bufsize) |
| paul@436 | 49 | |
| paul@436 | 50 | return s |
| paul@436 | 51 | |
| paul@436 | 52 | def _read_data(self, l): |
| paul@436 | 53 | |
| paul@436 | 54 | "Read data into 'l'." |
| paul@436 | 55 | |
| paul@436 | 56 | s = self._get_data() |
| paul@436 | 57 | l.append(s) |
| paul@436 | 58 | |
| paul@436 | 59 | def _read_until_newline(self, l): |
| paul@436 | 60 | |
| paul@436 | 61 | "Read data into 'l', returning whether a newline has been read." |
| paul@436 | 62 | |
| paul@436 | 63 | s = self._get_data() |
| paul@436 | 64 | |
| paul@436 | 65 | # NOTE: Only POSIX newlines are supported currently. |
| paul@436 | 66 | |
| paul@436 | 67 | i = s.find("\n") |
| paul@436 | 68 | |
| paul@436 | 69 | if i != -1: |
| paul@436 | 70 | l.append(s[:i+1]) |
| paul@436 | 71 | self.buffered = s[i+1:] |
| paul@436 | 72 | return True |
| paul@436 | 73 | |
| paul@436 | 74 | l.append(s) |
| paul@436 | 75 | return False |
| paul@347 | 76 | |
| paul@6 | 77 | # vim: tabstop=4 expandtab shiftwidth=4 |
