return
end
end_reached = false
- _buffer_pos = 0
- _buffer.clear
+ buffer_reset
end
redef fun close
do
super
- _buffer.clear
+ buffer_reset
end_reached = true
end
redef fun fill_buffer
do
- var nb = _file.io_read(_buffer.items, _buffer.capacity)
+ var nb = _file.io_read(_buffer, _buffer_capacity)
if nb <= 0 then
end_reached = true
nb = 0
end
- _buffer.length = nb
+ _buffer_length = nb
_buffer_pos = 0
end
# End of file?
- redef var end_reached: Bool = false
+ redef var end_reached = false
# Open the file at `path` for reading.
#
super FileStream
super Writer
+ redef fun write_bytes(s) do
+ if last_error != null then return
+ if not _is_writable then
+ last_error = new IOError("cannot write to non-writable stream")
+ return
+ end
+ write_native(s.items, s.length)
+ end
+
redef fun write(s)
do
if last_error != null then return
if not _is_writable then
+ last_error = new IOError("cannot write to non-writable stream")
+ return
+ end
+ for i in s.substrings do write_native(i.to_cstring, i.length)
+ end
+
+ redef fun write_byte(value)
+ do
+ if last_error != null then return
+ if not _is_writable then
last_error = new IOError("Cannot write to non-writable stream")
return
end
- 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)
+ if _file.address_is_null then
+ last_error = new IOError("Writing on a null stream")
+ _is_writable = false
+ return
+ end
+
+ var err = _file.write_byte(value)
+ if err != 1 then
+ # Big problem
+ last_error = new IOError("Problem writing a byte: {err}")
end
end
end
# Constant for read-only file streams
-private fun read_only: NativeString do return "r".to_cstring
+private fun read_only: NativeString do return once "r".to_cstring
# Constant for write-only file streams
#
# If a stream is opened on a file with this method,
# it will wipe the previous file if any.
# Else, it will create the file.
-private fun wipe_write: NativeString do return "w".to_cstring
+private fun wipe_write: NativeString do return once "w".to_cstring
###############################################################################
prepare_buffer(1)
end
- redef fun poll_in: Bool is extern "file_stdin_poll_in"
+ redef fun poll_in is extern "file_stdin_poll_in"
end
# Standard output stream.
# ~~~
#
# See `Reader::read_all` for details.
- fun read_all: String
+ fun read_all: String do return read_all_bytes.to_s
+
+ fun read_all_bytes: Bytes
do
var s = open_ro
- var res = s.read_all
+ var res = s.read_all_bytes
s.close
return res
end
end
# Delete the directory itself
- if ok then path.to_cstring.rmdir
+ if ok then ok = path.to_cstring.rmdir and ok
return ok
end
return res
end
- # Simplify a file path by remove useless ".", removing "//", and resolving ".."
+ # Simplify a file path by remove useless `.`, removing `//`, and resolving `..`
#
- # * ".." are not resolved if they start the path
- # * starting "/" is not removed
- # * trailing "/" is removed
+ # * `..` are not resolved if they start the path
+ # * starting `.` is simplified unless the path is empty
+ # * starting `/` is not removed
+ # * trailing `/` is removed
#
# Note that the method only work on the string:
#
# assert "dir/..".simplify_path == "."
# assert "//absolute//path/".simplify_path == "/absolute/path"
# assert "//absolute//../".simplify_path == "/"
+ # assert "/".simplify_path == "/"
+ # assert "../".simplify_path == ".."
+ # assert "./".simplify_path == "."
+ # assert "././././././".simplify_path == "."
+ # assert "./../dir".simplify_path == "../dir"
+ # assert "./dir".simplify_path == "dir"
# ~~~
fun simplify_path: String
do
var a = self.split_with("/")
var a2 = new Array[String]
for x in a do
- if x == "." then continue
- if x == "" and not a2.is_empty then continue
+ if x == "." and not a2.is_empty then continue # skip `././`
+ if x == "" and not a2.is_empty then continue # skip `//`
if x == ".." and not a2.is_empty and a2.last != ".." then
- a2.pop
- continue
+ if a2.last == "." then # do not skip `./../`
+ a2.pop # reduce `./../` in `../`
+ else # reduce `dir/../` in `/`
+ a2.pop
+ continue
+ end
+ else if not a2.is_empty and a2.last == "." then
+ a2.pop # reduce `./dir` in `dir`
end
a2.push(x)
end
end
# Create a directory (and all intermediate directories if needed)
- fun mkdir
+ #
+ # Return an error object in case of error.
+ #
+ # assert "/etc/".mkdir != null
+ fun mkdir: nullable Error
do
var dirs = self.split_with("/")
var path = new FlatBuffer
- if dirs.is_empty then return
+ if dirs.is_empty then return null
if dirs[0].is_empty then
# it was a starting /
path.add('/')
end
+ var error: nullable Error = null
for d in dirs do
if d.is_empty then continue
path.append(d)
path.add('/')
- path.to_s.to_cstring.file_mkdir
+ var res = path.to_s.to_cstring.file_mkdir
+ if not res and error == null then
+ error = new IOError("Cannot create directory `{path}`: {sys.errno.strerror}")
+ end
end
+ return error
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 return to_path.rmdir
+ #
+ # Return an error object in case of error.
+ #
+ # assert "/fail/does not/exist".rmdir != null
+ fun rmdir: nullable Error
+ do
+ var res = to_path.rmdir
+ if res then return null
+ var error = new IOError("Cannot change remove `{self}`: {sys.errno.strerror}")
+ return error
+ end
# Change the current working directory
#
# "..".chdir
# assert getcwd == "/"
#
- # TODO: errno
- fun chdir do to_cstring.file_chdir
+ # Return an error object in case of error.
+ #
+ # assert "/etc".chdir == null
+ # assert "/fail/does no/exist".chdir != null
+ # assert getcwd == "/etc" # unchanger
+ fun chdir: nullable Error
+ do
+ var res = to_cstring.file_chdir
+ if res then return null
+ var error = new IOError("Cannot change directory to `{self}`: {sys.errno.strerror}")
+ return error
+ end
# Return right-most extension (without the dot)
#
end
end
- # returns files contained within the directory represented by self
- fun files: Array[String] is extern import Array[String], Array[String].add, NativeString.to_s, String.to_cstring `{
- char *dir_path;
- DIR *dir;
-
- dir_path = String_to_cstring( recv );
- if ((dir = opendir(dir_path)) == NULL)
- {
- perror( dir_path );
- exit( 1 );
- }
- else
- {
- Array_of_String results;
- String file_name;
- struct dirent *de;
-
- results = new_Array_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 ) );
- Array_of_String_add( results, file_name );
- }
+ # Returns entries contained within the directory represented by self.
+ #
+ # var files = "/etc".files
+ # assert files.has("issue")
+ #
+ # Returns an empty array in case of error
+ #
+ # files = "/etc/issue".files
+ # assert files.is_empty
+ #
+ # TODO find a better way to handle errors and to give them back to the user.
+ fun files: Array[String]
+ do
+ var res = new Array[String]
+ var d = new NativeDir.opendir(to_cstring)
+ if d.address_is_null then return res
+
+ loop
+ var de = d.readdir
+ if de.address_is_null then break
+ var name = de.to_s_with_copy
+ if name == "." or name == ".." then continue
+ res.add name
+ end
+ d.closedir
- closedir( dir );
- return results;
- }
- `}
+ return res
+ end
end
redef class NativeString
struct stat* stat_element;
int res;
stat_element = malloc(sizeof(struct stat));
- res = lstat(recv, stat_element);
+ res = lstat(self, stat_element);
if (res == -1) return NULL;
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 rmdir: Bool `{ return !rmdir(self); `}
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_chdir: Bool is extern "string_NativeString_NativeString_file_chdir_0"
private fun file_realpath: NativeString is extern "file_NativeString_realpath"
end
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); `}
+ fun is_reg: Bool `{ return S_ISREG(self->st_mode); `}
# Returns true if it is a directory
- fun is_dir: Bool `{ return S_ISDIR(recv->st_mode); `}
+ fun is_dir: Bool `{ return S_ISDIR(self->st_mode); `}
# Returns true if it is a character device
- fun is_chr: Bool `{ return S_ISCHR(recv->st_mode); `}
+ fun is_chr: Bool `{ return S_ISCHR(self->st_mode); `}
# Returns true if it is a block device
- fun is_blk: Bool `{ return S_ISBLK(recv->st_mode); `}
+ fun is_blk: Bool `{ return S_ISBLK(self->st_mode); `}
# Returns true if the type is fifo
- fun is_fifo: Bool `{ return S_ISFIFO(recv->st_mode); `}
+ fun is_fifo: Bool `{ return S_ISFIFO(self->st_mode); `}
# Returns true if the type is a link
- fun is_lnk: Bool `{ return S_ISLNK(recv->st_mode); `}
+ fun is_lnk: Bool `{ return S_ISLNK(self->st_mode); `}
# Returns true if the type is a socket
- fun is_sock: Bool `{ return S_ISSOCK(recv->st_mode); `}
+ fun is_sock: Bool `{ return S_ISSOCK(self->st_mode); `}
end
# Instance of this class are standard FILE * pointers
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 write_byte(value: Int): Int `{
+ unsigned char b = (unsigned char)value;
+ return fwrite(&b, 1, 1, self);
+ `}
fun io_close: Int is extern "file_NativeFile_NativeFile_io_close_0"
fun file_stat: NativeFileStat is extern "file_NativeFile_NativeFile_file_stat_0"
- fun fileno: Int `{ return fileno(recv); `}
+ fun fileno: Int `{ return fileno(self); `}
# Flushes the buffer, forcing the write operation
fun flush: Int is extern "fflush"
# Used to specify how the buffering will be handled for the current stream.
new native_stderr is extern "file_NativeFileCapable_NativeFileCapable_native_stderr_0"
end
+# Standard `DIR*` pointer
+private extern class NativeDir `{ DIR* `}
+
+ # Open a directory
+ new opendir(path: NativeString) `{ return opendir(path); `}
+
+ # Close a directory
+ fun closedir `{ closedir(self); `}
+
+ # Read the next directory entry
+ fun readdir: NativeString `{
+ struct dirent *de;
+ de = readdir(self);
+ if (!de) return NULL;
+ return de->d_name;
+ `}
+end
+
redef class Sys
# Standard input
end
# Print `objects` on the standard output (`stdout`).
-protected fun printn(objects: Object...)
+fun printn(objects: Object...)
do
- sys.stdout.write(objects.to_s)
+ sys.stdout.write(objects.plain_to_s)
end
# Print an `object` on the standard output (`stdout`) and add a newline.
-protected fun print(object: Object)
+fun print(object: Object)
do
sys.stdout.write(object.to_s)
sys.stdout.write("\n")
end
+# Print `object` on the error output (`stderr` or a log system)
+fun print_error(object: Object)
+do
+ sys.stderr.write object.to_s
+ sys.stderr.write "\n"
+end
+
# Read a character from the standard input (`stdin`).
-protected fun getc: Char
+fun getc: Char
do
- return sys.stdin.read_char.ascii
+ var c = sys.stdin.read_char
+ if c == null then return '\1'
+ return c
end
# Read a line from the standard input (`stdin`).
-protected fun gets: String
+fun gets: String
do
return sys.stdin.read_line
end
# Return the working (current) directory
-protected fun getcwd: String do return file_getcwd.to_s
+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