[−][src]Crate wbuf
The wbuf
crate unifies standard IO, memory and file buffers into a unified type, allowing
to effectively leave the type of buffer used to the user.
How to use
The buffers
crate exposes three types; one for input, one for output, and one for duplex in/out
operations. For convenience, each type has a from_arg
constructor that takes in the output of
a commandline parser (such as clap
) and returns the buffer of the appropriate type (see the
function docs for more details).
IO Read/Write traits are implemented for the types meaning you can use those wrapper types as a drop-in replacement of "regular" buffers.
Example
use clap::{App, Arg}; use wbuf::{Input, Output}; let matches = App::new("app") .arg(Arg::with_name("input").index(1)) .arg(Arg::with_name("output").index(2)) .get_matches(); let mut input_buf = Input::from_arg(matches.value_of("input")); let mut output_buf = Output::from_arg(matches.value_of("output")); parse_input(&mut input_buf).and_then(|ast| transpile(ast, &mut output_buf));
Enums
Input | Input buffer wrapper type. Wraps stdin, a read-only memory Cursor, or a readable file buffer. |
InputOutput | Duplex I/O buffer wrapper type. Wraps stdin/stdout, a read/write Cursor, or a readable/writable file buffer. |
Output | Output buffer wrapper type. Wraps stdout, a write-only memory Cursor, or a writeable file buffer. |