// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"\\caption(?:of)?+\b(?:\[[^][]*\])?+\s*+(?!(\{(?:[^}{]++|(?-1))*+\}))").unwrap();
let string = " \\begin{figure}
\\includegraphics{pic.pdf}
\\caption[]{My caption \\\\
Source: XYZ
\\label{fig:pic_1}
\\end{figure}
\\begin{figure}[H]
\\includegraphics{pic.pdf}
\\captionof[]{My caption \\\\ xyz \\\\ abc
\\label{fig:pic_1} }
\\end{figure}
\\begin{figure}[H]
\\includegraphics{pic.pdf}
\\caption[]{My caption {with extra brackets}
Source: XYZ}
\\label{fig:pic_1}
\\end{figure}
\\begin{figure}[H]
\\includegraphics{pic.pdf}
\\caption[]{My caption}
\\end{figure}
Some text\\\\ %% This \\\\ should not be changed, it's not within a caption
More text
\\begin{figure}[H]
\\includegraphics{pic.pdf}
\\caption[]{My caption \\\\ Source: XYZ}
\\label{fig:pic_1}
\\end{figure}";
let substitution = "\\\\par";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/