# another product.
# File manipulations (create, read, write, etc.)
-package file
+module file
intrude import stream
intrude import string
import string_search
import time
+in "C Header" `{
+ #include <dirent.h>
+ #include <string.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>
+`}
+
redef class Object
# Simple I/O
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
# File Abstract Stream
###############################################################################
+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
# Remove a file, return true if success
fun file_delete: Bool do return to_cstring.file_delete
+ # 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"
fun strip_extension(ext: String): String
do
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 = 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
fun dirname: String
do
var l = _length - 1 # Index of the last char
- if l > 0 and self[l] == '/' then l -= 1 # remove trailing `/`
+ while l > 0 and self.chars[l] == '/' do l -= 1 # remove all trailing `/`
var pos = last_index_of_from('/', l)
if pos > 0 then
return substring(0, pos)
end
end
+ # Return the canonicalized absolute pathname (see POSIX function `realpath`)
+ fun realpath: String do
+ var cs = to_cstring.file_realpath
+ var res = cs.to_s_with_copy
+ # cs.free_malloc # FIXME memory leak
+ return res
+ end
+
# Simplify a file path by remove useless ".", removing "//", and resolving ".."
# ".." are not resolved if they start the path
# starting "/" is not removed
# * the validity of the path is not checked
#
# assert "some/./complex/../../path/from/../to/a////file//".simplify_path == "path/to/a/file"
- # assert "../dir/file".simplify_path == "../dir/file"
- # assert "dir/../../".simplify_path == ".."
- # assert "//absolute//path/".simplify_path == "/absolute/path"
+ # assert "../dir/file".simplify_path == "../dir/file"
+ # assert "dir/../../".simplify_path == ".."
+ # assert "dir/..".simplify_path == "."
+ # assert "//absolute//path/".simplify_path == "/absolute/path"
fun simplify_path: String
do
var a = self.split_with("/")
end
a2.push(x)
end
+ if a2.is_empty then return "."
return a2.join("/")
end
do
if path.is_empty then return self
if self.is_empty then return path
- if path[0] == '/' then return path
+ if path.chars[0] == '/' then return path
return "{self}/{path}"
end
end
end
+ # Change the current working directory
+ #
+ # "/etc".chdir
+ # assert getcwd == "/etc"
+ # "..".chdir
+ # assert getcwd == "/"
+ #
+ # TODO: errno
+ fun chdir do to_cstring.file_chdir
+
# Return right-most extension (without the dot)
fun file_extension : nullable String
do
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
`}
private fun file_mkdir: Bool is extern "string_NativeString_NativeString_file_mkdir_0"
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 * `}
end
# Instance of this class are standard FILE * pointers
-private extern NativeFile
+private extern 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"
nitlanguage / nit.git / blobdiff