1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2004-2008 Jean Privat <jean@pryen.org>
4 # Copyright 2008 Floréal Morandat <morandat@lirmm.fr>
5 # Copyright 2008 Jean-Sébastien Gélinas <calestar@gmail.com>
7 # This file is free software, which comes along with NIT. This software is
8 # distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
9 # without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
10 # PARTICULAR PURPOSE. You can modify it is you want, provided this header
11 # is kept unaltered, and a notification of the changes is added.
12 # You are allowed to redistribute it and sell it, alone or is a part of
15 # This module handle file input and output
25 # Print `objects' on the standard output (`stdout').
26 protected fun printn
(objects
: Object...)
28 stdout
.write
(objects
.to_s
)
31 # Print an `object' on the standard output (`stdout') and add a newline.
32 protected fun print
(object
: Object)
34 stdout
.write
(object
.to_s
)
38 # Read a character from the standard input (`stdin').
39 protected fun getc
: Char
41 return stdin
.read_char
.ascii
44 # Read a line from the standard input (`stdin').
45 protected fun gets
: String
47 return stdin
.read_line
51 # File Abstract Stream
54 super NativeFileCapable
55 # The path of the file.
56 readable var _path
: nullable String = null
59 var _file
: nullable NativeFile = null
61 fun file_stat
: FileStat
62 do return _file
.file_stat
end
71 # Open the same file again.
72 # The original path is reused, therefore the reopened file can be a different file.
76 _file
= io_open_read
(_path
.to_cstring
)
84 var i
= _file
.io_close
90 var nb
= _file
.io_read
(_buffer
._items
, _buffer
._capacity
)
100 redef readable var _end_reached
: Bool = false
102 # Open the file at `path' for reading.
103 init open
(path
: String)
107 _file
= io_open_read
(_path
.to_cstring
)
108 assert cant_open_file
: _file
!= null
112 private init without_file
do end
123 write_native
(s
.to_cstring
, s
.length
)
126 redef fun is_writable
do return _writable
130 var i
= _file
.io_close
134 # Is the file open in write mode
137 # Write `len' bytes from `native'.
138 private fun write_native
(native
: NativeString, len
: Int)
141 var err
= _file
.io_write
(native
, len
)
144 printn
("Problem in writing : ", err
, " ", len
, "\n")
148 # Open the file at `path' for writing.
149 init open
(path
: String)
151 _file
= io_open_write
(path
.to_cstring
)
152 assert cant_open_file
: _file
!= null
158 private init without_file
do end
161 ###############################################################################
175 _file
= native_stdout
176 _path
= "/dev/stdout"
184 _file
= native_stderr
185 _path
= "/dev/stderr"
190 ###############################################################################
193 # return true if a file with this names exists
194 fun file_exists
: Bool do return to_cstring
.file_exists
196 fun file_stat
: FileStat do return to_cstring
.file_stat
198 # Remove a file, return true if success
199 fun file_delete
: Bool do return to_cstring
.file_delete
201 # remove the trailing extension "ext"
202 fun strip_extension
(ext
: String): String
204 if has_suffix
(ext
) then
205 return substring
(0, length
- ext
.length
)
210 # Extract the basename of a path and remove the extension
211 fun basename
(ext
: String): String
213 var pos
= last_index_of_from
('/', _length
- 1)
216 n
= substring_from
(pos
+1)
218 return n
.strip_extension
(ext
)
221 # Extract the dirname of a path
224 var pos
= last_index_of_from
('/', _length
- 1)
226 return substring
(0, pos
)
232 # Create a directory (and all intermediate directories if needed)
235 var dirs
= self.split_with
("/")
236 var path
= new Buffer
237 if dirs
.is_empty
then return
238 if dirs
[0].is_empty
then
239 # it was a starting /
243 if d
.is_empty
then continue
246 path
.to_s
.to_cstring
.file_mkdir
250 # Return right-most extension (without the dot)
251 fun file_extension
: nullable String
253 var last_slash
= last_index_of
('.')
254 if last_slash
>= 0 then
255 return substring
( last_slash
+1, length
)
262 redef class NativeString
263 private fun file_exists
: Bool is extern "string_NativeString_NativeString_file_exists_0"
264 private fun file_stat
: FileStat is extern "string_NativeString_NativeString_file_stat_0"
265 private fun file_mkdir
: Bool is extern "string_NativeString_NativeString_file_mkdir_0"
266 private fun file_delete
: Bool is extern "string_NativeString_NativeString_file_delete_0"
271 # This class is system dependent ... must reify the vfs
272 fun mode
: Int is extern "file_FileStat_FileStat_mode_0"
273 fun atime
: Int is extern "file_FileStat_FileStat_atime_0"
274 fun ctime
: Int is extern "file_FileStat_FileStat_ctime_0"
275 fun mtime
: Int is extern "file_FileStat_FileStat_mtime_0"
276 fun size
: Int is extern "file_FileStat_FileStat_size_0"
279 # Instance of this class are standard FILE * pointers
280 private universal NativeFile
282 fun io_read
(buf
: NativeString, len
: Int): Int is extern "file_NativeFile_NativeFile_io_read_2"
283 fun io_write
(buf
: NativeString, len
: Int): Int is extern "file_NativeFile_NativeFile_io_write_2"
284 fun io_close
: Int is extern "file_NativeFile_NativeFile_io_close_0"
285 fun file_stat
: FileStat is extern "file_NativeFile_NativeFile_file_stat_0"
288 private interface NativeFileCapable
289 fun io_open_read
(path
: NativeString): NativeFile is extern "file_NativeFileCapable_NativeFileCapable_io_open_read_1"
290 fun io_open_write
(path
: NativeString): NativeFile is extern "file_NativeFileCapable_NativeFileCapable_io_open_write_1"
291 fun native_stdin
: NativeFile is extern "file_NativeFileCapable_NativeFileCapable_native_stdin_0"
292 fun native_stdout
: NativeFile is extern "file_NativeFileCapable_NativeFileCapable_native_stdout_0"
293 fun native_stderr
: NativeFile is extern "file_NativeFileCapable_NativeFileCapable_native_stderr_0"
297 fun stdin
: IFStream do return once
new Stdin
300 fun stdout
: OFStream do return once
new Stdout
302 # Standard output for error.
303 fun stderr
: OFStream do return once
new Stderr