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use lazy_static::lazy_static;
use std::ffi::OsStr;
use std::path::Path;
use std::collections::HashMap;
mod txt;
mod docx;
mod xlsx;
mod pptx;
mod odt;
mod odp;
mod pdf;
fn empty_extractor(_ : &str) -> String {
"".to_string()
}
macro_rules! ext {
($f:ident) => {(stringify!($f), $f::get_text as ExtFn)}
}
type ExtFn = fn(&str) -> String;
lazy_static! {
static ref EXT: HashMap<&'static str, ExtFn> = {
HashMap::from([
ext!(txt),
ext!(docx),
ext!(xlsx),
ext!(pptx),
ext!(odt),
ext!(odp),
ext!(pdf),
])
};
}
/// Extract text from files if there is an extractor.
/// If there is an error like `permission denied` or there
/// is no extractor this function returns a empty string.
pub fn extract_text(path : &str) -> String {
let p = Path::new(&path);
let extenstion = p.extension().unwrap_or_else(|| OsStr::new("")).to_str().unwrap();
EXT.get(extenstion).unwrap_or(&(empty_extractor as ExtFn))(path)
}
pub fn is_supported(path : &str) -> bool {
let p = Path::new(&path);
let extenstion = p.extension().unwrap_or_else(|| OsStr::new("")).to_str().unwrap();
EXT.get(extenstion).is_some()
}
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