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use std::path::{Component, Path, PathBuf};
use log::trace;
use pandoc::{InputFormat, InputKind, OutputFormat, OutputKind, Pandoc, PandocOption};
/// Get the base directory given the name of the markdown file.
///
/// All relative filename, such as bindings files, are resolved
/// against the base directory.
pub fn get_basedir_from(filename: &Path) -> PathBuf {
match filename.parent() {
None => {
let p = Component::CurDir;
let p: &Path = p.as_ref();
p.to_path_buf()
}
Some(x) => x.to_path_buf(),
}
}
/// Add 'citeproc' to a Pandoc instance.
///
/// This attempts to determine if `--citeproc` or `--filter pandoc-citeproc`
/// is needed, and then does that specific thing.
pub fn add_citeproc(pandoc: &mut Pandoc) {
let mut guesser = Pandoc::new();
guesser.set_input(InputKind::Pipe("".to_string()));
guesser.set_input_format(InputFormat::Markdown, vec![]);
guesser.set_output_format(OutputFormat::Markdown, vec![]);
guesser.set_output(OutputKind::Pipe);
guesser.add_option(PandocOption::Citeproc);
if guesser.execute().is_ok() {
trace!("Discovered --citeproc");
pandoc.add_option(PandocOption::Citeproc);
} else {
trace!("Discovered --filter pandoc-citeproc");
pandoc.add_option(PandocOption::Filter("pandoc-citeproc".into()));
}
}
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