stdlib : file
close
file.close
Closes the file.
delete
file.delete path
Deletes the file at the given path.
each_line
file.each_line path { line block }
Opens the file a the given path, calling the block for each line of the file.
each_line
file.each_line { line block }
Calls the block, passing in each line of the file as an argument, then closes the file.
exists?
file.exists? path
Returns true if the given path exists.
make_dir
file.make_dir path
Makes a new directory at the given path.
open
file.open path
file.open path, mode
file.open path, { file | block }
file.open path, mode, { file | block }
Opens a file at the given path. If no mode is given, the default is “r” (read-only).
Possible modes:
- “r”: read mode (the default)
- “w”: write mode
- “a”: append mode
- “r+”: update mode, all previous data is preserved
- “w+”: update mode, all previous data is erased
- “a+”: append update mode, previous data is preserved, writing is only allowed at the end of file
If no block is given, this returns the open file handle.
If a block is given, the file handle is passed to the block. When the block is finished, the file will be closed.
read
file.read path
Read entire file into a string.
read_line
file.read_line
Reads a single line from the file and returns it as a string.
read_lines
file.read_lines path
Reads the file into an array of lines.
rename
file.rename original, new
Rename a file.
type
file.type path
Return the type of a file as a string.
Type can be
- file
- directory
- link
- socket
- named pipe
- char device
- block device
- other
write
file.write data
Write data to the file.
write_line
file.write_line data
Write data to the file, followed by “\n”.
