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a/src/args.rs b/src/args.rs new file mode 100644 index 0000000..f75b931 --- /dev/null +++ b/src/args.rs @@ -0,0 +1,16 @@ +use clap::{arg, command, ArgMatches}; + +pub fn get_args() -> ArgMatches { + command!() + .about("Query markdown files") + .arg(arg!([dir] "Directory to scan").required(true)) + .arg(arg!(-j --json "Output result as JSON").required(false)) + .arg(arg!(-l --limit "Limit number of results returned").required(false)) + .arg(arg!(-f --filter ... "Filter to apply to the documents").required(false)) + .arg( + arg!(-c --column ... "Specify output columns") + .required(false) + .default_value("path"), + ) + .get_matches() +} diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..3b88465 --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,115 @@ +/// get frontmatter from markdown document +#[must_use] +pub fn get_frontmatter(markdown: &str) -> Option { + let frontmatter_regex = regex::Regex::new(r"(?s)^---\s*\n(.*?)\n---").unwrap(); + + if let Some(captures) = frontmatter_regex.captures(markdown) { + let frontmatter = captures.get(1).map(|m| m.as_str().to_string()); + + frontmatter + } else { + None + } +} + +#[derive(Debug)] +pub struct Document { + pub path: String, + pub frontmatter: serde_yaml::Value, +} + +#[derive(Debug)] +pub struct Index { + pub documents: Vec, +} + +/// Create a markdown document index over `dir` +pub fn scan_dir(dir: &str) -> Index { + let mut i = Index { documents: vec![] }; + + for e in walkdir::WalkDir::new(dir) + .into_iter() + .filter_map(std::result::Result::ok) + { + if e.path().is_dir() { + continue; + } + if e.path().extension().is_none() { + continue; + } + if e.path().extension().unwrap().to_str().unwrap() == "md" { + let path = e.path().to_str().unwrap().to_owned(); + let content = std::fs::read_to_string(&path).unwrap(); + let frontmatter = get_frontmatter(&content); + if let Some(frontmatter) = frontmatter { + let frontmatter = serde_yaml::from_str(&frontmatter).unwrap(); + let doc = Document { path, frontmatter }; + i.documents.push(doc); + } else { + i.documents.push(Document { + path, + frontmatter: serde_yaml::to_value(&serde_yaml::Mapping::new()).unwrap(), + }); + } + } + } + + i +} + +/// Get a key from document. +/// This will return internal properties first, then it will search the document frontmatter for the key and return it. If nothing was found an empty string is returned. +fn get_key(d: &Document, key: &str) -> String { + if key == "file.title" { + let path = std::path::Path::new(&d.path); + return path.file_stem().unwrap().to_str().unwrap().to_string(); + } + if let Some(val) = d.frontmatter.as_mapping().unwrap().get(key) { + // TODO : Fix format + format!("{val:?}") + } else { + String::new() + } +} + +type Table = Vec>; + +/// Build a table with specified columns from index +#[must_use] +pub fn select_columns(i: &Index, col: &[&String]) -> Table { + let mut rows = vec![]; + + for doc in &i.documents { + let mut rcol = vec![]; + for c in col { + rcol.push(get_key(doc, c)); + } + rows.push(rcol); + } + + rows +} + +/// Apply filters to the documents of the index returning a new filtered index +#[must_use] +pub fn filter_documents(i: Index, filters: &[txd::filter::Filter]) -> Index { + let docs: Vec<_> = i + .documents + .into_iter() + .filter_map(|x| { + for f in filters { + let a = get_key(&x, &f.0); + + let a = txd::parse(&a); + let b = txd::parse(&f.2); + + if a.compare(f.1, b) { + return Some(x); + } + } + None + }) + .collect(); + + Index { documents: docs } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..5b485b6 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,77 @@ +use mdq::{filter_documents, scan_dir, select_columns}; +use prettytable::{Cell, Row}; + +mod args; + +fn main() { + let args = args::get_args(); + //println!("{args:?}"); + + let root_dir = args.get_one::("dir").unwrap(); + + let output_json = args.get_flag("json"); + + let limit: Option = if let Some(limit_arg) = args.get_one::("limit") { + limit_arg.parse().ok() + } else { + None + }; + + let columns: Vec<_> = if let Some(columns) = args.get_many::("column") { + columns.collect() + } else { + vec![] + }; + let filters: Vec<_> = if let Some(filters) = args.get_many::("filter") { + filters.collect() + } else { + vec![] + }; + + let filters: Vec<_> = filters + .into_iter() + .map(|x| txd::filter::parse_condition(x).expect("failed to parse filter")) + .collect(); + + let mut i = scan_dir(root_dir); + if !filters.is_empty() { + i = filter_documents(i, &filters); + } + + let data = if let Some(limit) = limit { + select_columns(&i, &columns.clone()) + .into_iter() + .take(limit) + .collect::>() + } else { + select_columns(&i, &columns.clone()) + }; + + if output_json { + let data = serde_json::json!( + { + "columns": columns, + "results": data + } + ); + println!("{}", serde_json::to_string(&data).unwrap()); + return; + } + + let mut table = prettytable::Table::new(); + + let headers = columns + .iter() + .map(|cell| Cell::new(cell)) + .collect::>(); + table.set_titles(Row::new(headers)); + + // Add rows to the table + for row in data { + let cells: Vec = row.iter().map(|cell| Cell::new(cell)).collect(); + table.add_row(Row::new(cells)); + } + + // Print the table to the console + table.printstd(); +}