module file
intrude import stream
-intrude import string
+intrude import ropes
import string_search
import time
-redef class Object
-# Simple I/O
-
- # Print `objects` on the standard output (`stdout`).
- protected fun printn(objects: Object...)
- do
- stdout.write(objects.to_s)
- end
-
- # Print an `object` on the standard output (`stdout`) and add a newline.
- protected fun print(object: Object)
- do
- stdout.write(object.to_s)
- stdout.write("\n")
- end
-
- # Read a character from the standard input (`stdin`).
- protected fun getc: Char
- do
- return stdin.read_char.ascii
- end
-
- # Read a line from the standard input (`stdin`).
- protected fun gets: String
- do
- return stdin.read_line
- end
-
- # Return the working (current) directory
- protected fun getcwd: String do return file_getcwd.to_s
- private fun file_getcwd: NativeString is extern "string_NativeString_NativeString_file_getcwd_0"
-end
+in "C Header" `{
+ #include <dirent.h>
+ #include <string.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>
+ #include <stdio.h>
+`}
# File Abstract Stream
abstract class FStream
super IOS
# The path of the file.
- readable var _path: nullable String = null
+ var path: nullable String = null
# The FILE *.
- var _file: nullable NativeFile = null
+ private var file: nullable NativeFile = null
+
+ fun file_stat: FileStat do return _file.file_stat
- fun file_stat: FileStat
- do return _file.file_stat end
+ # File descriptor of this file
+ fun fd: Int do return _file.fileno
end
# File input stream
fun reopen
do
if not eof then close
- _file = new NativeFile.io_open_read(_path.to_cstring)
- _end_reached = false
+ _file = new NativeFile.io_open_read(path.to_cstring)
+ end_reached = false
_buffer_pos = 0
_buffer.clear
end
redef fun close
do
var i = _file.io_close
- _end_reached = true
+ end_reached = true
end
redef fun fill_buffer
do
- var nb = _file.io_read(_buffer._items, _buffer._capacity)
+ var nb = _file.io_read(_buffer.items, _buffer.capacity)
if nb <= 0 then
- _end_reached = true
+ end_reached = true
nb = 0
end
- _buffer._length = nb
+ _buffer.length = nb
_buffer_pos = 0
end
# End of file?
- redef readable var _end_reached: Bool = false
+ redef var end_reached: Bool = false
# Open the file at `path` for reading.
init open(path: String)
do
- _path = path
+ self.path = path
prepare_buffer(10)
- _file = new NativeFile.io_open_read(_path.to_cstring)
- assert cant_open_file: _file != null
+ _file = new NativeFile.io_open_read(path.to_cstring)
+ assert not _file.address_is_null else
+ print "Error: Opening file at '{path}' failed with '{sys.errno.strerror}'"
+ end
end
private init do end
redef fun write(s)
do
- assert _writable
- write_native(s.to_cstring, s.length)
+ assert _is_writable
+ if s isa FlatText then
+ write_native(s.to_cstring, s.length)
+ else
+ for i in s.substrings do write_native(i.to_cstring, i.length)
+ end
end
- redef fun is_writable do return _writable
-
redef fun close
do
var i = _file.io_close
- _writable = false
+ _is_writable = false
end
- # Is the file open in write mode
- var _writable: Bool
+ redef var is_writable = false
# Write `len` bytes from `native`.
private fun write_native(native: NativeString, len: Int)
do
- assert _writable
+ assert _is_writable
var err = _file.io_write(native, len)
if err != len then
# Big problem
init open(path: String)
do
_file = new NativeFile.io_open_write(path.to_cstring)
- assert cant_open_file: _file != null
- _path = path
- _writable = true
+ assert not _file.address_is_null else
+ print "Error: Opening file at '{path}' failed with '{sys.errno.strerror}'"
+ end
+ self.path = path
+ _is_writable = true
end
private init do end
class Stdin
super IFStream
+ super PollableIStream
+
private init do
_file = new NativeFile.native_stdin
- _path = "/dev/stdin"
+ path = "/dev/stdin"
prepare_buffer(1)
end
- # Is these something to read? (non blocking)
- # FIXME: should be generalized
- fun poll_in: Bool is extern "file_stdin_poll_in"
+ redef fun poll_in: Bool is extern "file_stdin_poll_in"
end
class Stdout
super OFStream
private init do
_file = new NativeFile.native_stdout
- _path = "/dev/stdout"
- _writable = true
+ path = "/dev/stdout"
+ _is_writable = true
end
end
super OFStream
private init do
_file = new NativeFile.native_stderr
- _path = "/dev/stderr"
- _writable = true
+ path = "/dev/stderr"
+ _is_writable = true
end
end
###############################################################################
+redef class Streamable
+ # Like `write_to` but take care of creating the file
+ fun write_to_file(filepath: String)
+ do
+ var stream = new OFStream.open(filepath)
+ write_to(stream)
+ stream.close
+ end
+end
+
redef class String
# return true if a file with this names exists
fun file_exists: Bool do return to_cstring.file_exists
+ # The status of a file. see POSIX stat(2).
fun file_stat: FileStat do return to_cstring.file_stat
+
+ # The status of a file or of a symlink. see POSIX lstat(2).
fun file_lstat: FileStat do return to_cstring.file_lstat
# Remove a file, return true if success
fun file_delete: Bool do return to_cstring.file_delete
- # remove the trailing extension "ext"
+ # Copy content of file at `self` to `dest`
+ fun file_copy_to(dest: String)
+ do
+ var input = new IFStream.open(self)
+ var output = new OFStream.open(dest)
+
+ while not input.eof do
+ var buffer = input.read(1024)
+ output.write buffer
+ end
+
+ input.close
+ output.close
+ end
+
+ # Remove the trailing extension `ext`.
+ #
+ # `ext` usually starts with a dot but could be anything.
+ #
+ # assert "file.txt".strip_extension(".txt") == "file"
+ # assert "file.txt".strip_extension("le.txt") == "fi"
+ # assert "file.txt".strip_extension("xt") == "file.t"
+ #
+ # if `ext` is not present, `self` is returned unmodified.
+ #
+ # assert "file.txt".strip_extension(".tar.gz") == "file.txt"
fun strip_extension(ext: String): String
do
if has_suffix(ext) then
end
# Extract the basename of a path and remove the extension
+ #
+ # assert "/path/to/a_file.ext".basename(".ext") == "a_file"
+ # assert "path/to/a_file.ext".basename(".ext") == "a_file"
+ # assert "path/to".basename(".ext") == "to"
+ # assert "path/to/".basename(".ext") == "to"
+ # assert "path".basename("") == "path"
+ # assert "/path".basename("") == "path"
+ # assert "/".basename("") == "/"
+ # assert "".basename("") == ""
fun basename(ext: String): String
do
- var pos = last_index_of_from('/', _length - 1)
+ var l = length - 1 # Index of the last char
+ while l > 0 and self.chars[l] == '/' do l -= 1 # remove all trailing `/`
+ if l == 0 then return "/"
+ var pos = chars.last_index_of_from('/', l)
var n = self
if pos >= 0 then
- n = substring_from(pos+1)
+ n = substring(pos+1, l-pos)
end
return n.strip_extension(ext)
end
# assert "".dirname == "."
fun dirname: String
do
- var l = _length - 1 # Index of the last char
- if l > 0 and self.chars[l] == '/' then l -= 1 # remove trailing `/`
- var pos = last_index_of_from('/', l)
+ var l = length - 1 # Index of the last char
+ while l > 0 and self.chars[l] == '/' do l -= 1 # remove all trailing `/`
+ var pos = chars.last_index_of_from('/', l)
if pos > 0 then
return substring(0, pos)
else if pos == 0 then
# assert "dir/../../".simplify_path == ".."
# assert "dir/..".simplify_path == "."
# assert "//absolute//path/".simplify_path == "/absolute/path"
+ # assert "//absolute//../".simplify_path == "/"
fun simplify_path: String
do
var a = self.split_with("/")
a2.push(x)
end
if a2.is_empty then return "."
+ if a2.length == 1 and a2.first == "" then return "/"
return a2.join("/")
end
fun mkdir
do
var dirs = self.split_with("/")
- var path = new Buffer
+ var path = new FlatBuffer
if dirs.is_empty then return
if dirs[0].is_empty then
# it was a starting /
end
end
+ # Delete a directory and all of its content, return `true` on success
+ #
+ # Does not go through symbolic links and may get stuck in a cycle if there
+ # is a cycle in the filesystem.
+ fun rmdir: Bool
+ do
+ var ok = true
+ for file in self.files do
+ var file_path = self.join_path(file)
+ var stat = file_path.file_lstat
+ if stat.is_dir then
+ ok = file_path.rmdir and ok
+ else
+ ok = file_path.file_delete and ok
+ end
+ stat.free
+ end
+
+ # Delete the directory itself
+ if ok then to_cstring.rmdir
+
+ return ok
+ end
+
# Change the current working directory
#
# "/etc".chdir
fun chdir do to_cstring.file_chdir
# Return right-most extension (without the dot)
- fun file_extension : nullable String
+ #
+ # Only the last extension is returned.
+ # There is no special case for combined extensions.
+ #
+ # assert "file.txt".file_extension == "txt"
+ # assert "file.tar.gz".file_extension == "gz"
+ #
+ # For file without extension, `null` is returned.
+ # Hoever, for trailing dot, `""` is returned.
+ #
+ # assert "file".file_extension == null
+ # assert "file.".file_extension == ""
+ #
+ # The starting dot of hidden files is never considered.
+ #
+ # assert ".file.txt".file_extension == "txt"
+ # assert ".file".file_extension == null
+ fun file_extension: nullable String
do
- var last_slash = last_index_of('.')
- if last_slash >= 0 then
+ var last_slash = chars.last_index_of('.')
+ if last_slash > 0 then
return substring( last_slash+1, length )
else
return null
end
# returns files contained within the directory represented by self
- fun files : Set[ String ] is extern import HashSet, HashSet::add, NativeString::to_s, String::to_cstring, HashSet[String] as( Set[String] ), String as( Object )
+ fun files : Set[ String ] is extern import HashSet[String], HashSet[String].add, NativeString.to_s, String.to_cstring, HashSet[String].as(Set[String]) `{
+ char *dir_path;
+ DIR *dir;
+
+ dir_path = String_to_cstring( recv );
+ if ((dir = opendir(dir_path)) == NULL)
+ {
+ perror( dir_path );
+ exit( 1 );
+ }
+ else
+ {
+ HashSet_of_String results;
+ String file_name;
+ struct dirent *de;
+
+ results = new_HashSet_of_String();
+
+ while ( ( de = readdir( dir ) ) != NULL )
+ if ( strcmp( de->d_name, ".." ) != 0 &&
+ strcmp( de->d_name, "." ) != 0 )
+ {
+ file_name = NativeString_to_s( strdup( de->d_name ) );
+ HashSet_of_String_add( results, file_name );
+ }
+
+ closedir( dir );
+ return HashSet_of_String_as_Set_of_String( results );
+ }
+ `}
end
redef class NativeString
return stat_element;
`}
private fun file_mkdir: Bool is extern "string_NativeString_NativeString_file_mkdir_0"
+ private fun rmdir: Bool `{ return rmdir(recv); `}
private fun file_delete: Bool is extern "string_NativeString_NativeString_file_delete_0"
private fun file_chdir is extern "string_NativeString_NativeString_file_chdir_0"
private fun file_realpath: NativeString is extern "file_NativeString_realpath"
end
-extern FileStat `{ struct stat * `}
# This class is system dependent ... must reify the vfs
+extern class FileStat `{ struct stat * `}
+ # Returns the permission bits of file
fun mode: Int is extern "file_FileStat_FileStat_mode_0"
+ # Returns the last access time
fun atime: Int is extern "file_FileStat_FileStat_atime_0"
+ # Returns the last status change time
fun ctime: Int is extern "file_FileStat_FileStat_ctime_0"
+ # Returns the last modification time
fun mtime: Int is extern "file_FileStat_FileStat_mtime_0"
+ # Returns the size
fun size: Int is extern "file_FileStat_FileStat_size_0"
+ # Returns true if it is a regular file (not a device file, pipe, sockect, ...)
fun is_reg: Bool `{ return S_ISREG(recv->st_mode); `}
+ # Returns true if it is a directory
fun is_dir: Bool `{ return S_ISDIR(recv->st_mode); `}
+ # Returns true if it is a character device
fun is_chr: Bool `{ return S_ISCHR(recv->st_mode); `}
+ # Returns true if it is a block device
fun is_blk: Bool `{ return S_ISBLK(recv->st_mode); `}
+ # Returns true if the type is fifo
fun is_fifo: Bool `{ return S_ISFIFO(recv->st_mode); `}
+ # Returns true if the type is a link
fun is_lnk: Bool `{ return S_ISLNK(recv->st_mode); `}
+ # Returns true if the type is a socket
fun is_sock: Bool `{ return S_ISSOCK(recv->st_mode); `}
end
# Instance of this class are standard FILE * pointers
-private extern NativeFile
+private extern class NativeFile `{ FILE* `}
fun io_read(buf: NativeString, len: Int): Int is extern "file_NativeFile_NativeFile_io_read_2"
fun io_write(buf: NativeString, len: Int): Int is extern "file_NativeFile_NativeFile_io_write_2"
fun io_close: Int is extern "file_NativeFile_NativeFile_io_close_0"
fun file_stat: FileStat is extern "file_NativeFile_NativeFile_file_stat_0"
+ fun fileno: Int `{ return fileno(recv); `}
new io_open_read(path: NativeString) is extern "file_NativeFileCapable_NativeFileCapable_io_open_read_1"
new io_open_write(path: NativeString) is extern "file_NativeFileCapable_NativeFileCapable_io_open_write_1"
new native_stderr is extern "file_NativeFileCapable_NativeFileCapable_native_stderr_0"
end
-# Standard input.
-fun stdin: Stdin do return once new Stdin
+redef class Sys
+
+ # Standard input
+ var stdin: PollableIStream = new Stdin is protected writable
+
+ # Standard output
+ var stdout: OStream = new Stdout is protected writable
+
+ # Standard output for errors
+ var stderr: OStream = new Stderr is protected writable
+
+end
+
+# Print `objects` on the standard output (`stdout`).
+protected fun printn(objects: Object...)
+do
+ sys.stdout.write(objects.to_s)
+end
+
+# Print an `object` on the standard output (`stdout`) and add a newline.
+protected fun print(object: Object)
+do
+ sys.stdout.write(object.to_s)
+ sys.stdout.write("\n")
+end
+
+# Read a character from the standard input (`stdin`).
+protected fun getc: Char
+do
+ return sys.stdin.read_char.ascii
+end
-# Standard output.
-fun stdout: OFStream do return once new Stdout
+# Read a line from the standard input (`stdin`).
+protected fun gets: String
+do
+ return sys.stdin.read_line
+end
-# Standard output for error.
-fun stderr: OFStream do return once new Stderr
+# Return the working (current) directory
+protected fun getcwd: String do return file_getcwd.to_s
+private fun file_getcwd: NativeString is extern "string_NativeString_NativeString_file_getcwd_0"
nitlanguage / nit.git / blobdiff