Remove comments from a char
iterator.
This crate provides the WithoutComments
iterator and the IntoWithoutComments
trait implemented for
all Iterator<Item=char>
providing the without_comments
method. Comment specifications are available for
rust-style, c-style, python-style, and haskell-style line and block comments, a way to specify custom
comment specifications is planned. This crate is intended to be used for removing comments from text,
not from code, for this reason, "\*"
will still open a block comment in rust mode because string literals
have no semantic significance.
Add this to your Cargo.toml
:
toml
[dependencies]
without-comments = "0.0.3"
main.rs: ```rust fn main() { use std::fs::readtostring; use no_comment::{IntoWithoutComments as _, languages};
let without_comments = read_to_string("tests.txt")
.unwrap()
.chars()
.without_comments(languages::rust())
.collect::<String>();
println!("{}", without_comments);
} ```
test.txt:
text
This is text // this is a (rust) line comment
This is more text /* this is a (rust) block comment
/* this one is nested */ */
This is text again
/* If a comment is left open, it keeps
going until the end.
output: ```text This is text This is more text This is text again
```
Note that trailing spaces and newlines are preserved, showing whitespace the output looks like this:
```text This·is·text·¶ This·is·more·text·¶ This·is·text·again¶
```