X-Git-Url: http://git.scottworley.com/tablify/blobdiff_plain/fa8b547998d23b948cadde2c9e8f35b9055f9189..a05772014cb65edac0cc664296802036bdc48ca4:/src/lib.rs?ds=sidebyside diff --git a/src/lib.rs b/src/lib.rs index d55aa53..e8a2ea0 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,5 +1,5 @@ use std::borrow::ToOwned; -use std::collections::HashMap; +use std::collections::{HashMap, HashSet}; use std::fmt::Write; use std::io::BufRead; use std::iter::Iterator; @@ -7,13 +7,26 @@ use std::iter::Iterator; #[derive(PartialEq, Eq, Debug)] struct Config { column_threshold: usize, + static_columns: Vec>, } impl Config { - fn apply_command(&mut self, cmd: &str) -> Result<(), std::io::Error> { + fn apply_command(&mut self, line_num: usize, cmd: &str) -> Result<(), std::io::Error> { if let Some(threshold) = cmd.strip_prefix("col_threshold ") { - self.column_threshold = threshold - .parse() - .map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidInput, e))?; + self.column_threshold = threshold.parse().map_err(|e| { + std::io::Error::new( + std::io::ErrorKind::InvalidInput, + format!("line {line_num}: col_threshold must be numeric: {e}"), + ) + })?; + } else if let Some(col) = cmd.strip_prefix("col ") { + self.static_columns.push(Some(col.to_owned())); + } else if cmd == "colsep" { + self.static_columns.push(None); + } else { + return Err(std::io::Error::new( + std::io::ErrorKind::InvalidInput, + format!("line {line_num}: Unknown command: {cmd}"), + )); } Ok(()) } @@ -30,6 +43,7 @@ const HEADER: &str = r#" th, td { white-space: nowrap; } th { text-align: left; font-weight: normal; } th.spacer_row { height: .3em; } + .spacer_col { border: none; width: .2em; } table { border-collapse: collapse } tr.key > th { height: 10em; vertical-align: bottom; line-height: 1 } tr.key > th > div { width: 1em; } @@ -155,7 +169,7 @@ impl<'cfg, Input: Iterator>> Iterator Some((_, Err(e))) => return Some(Err(e)), Some((n, Ok(line))) => match InputLine::from(line.as_ref()) { InputLine::Command(cmd) => { - if let Err(e) = self.config.apply_command(cmd) { + if let Err(e) = self.config.apply_command(n + 1, cmd) { return Some(Err(e)); } } @@ -166,7 +180,7 @@ impl<'cfg, Input: Iterator>> Iterator InputLine::Entry(col, instance) => match &mut self.row { None => { return Some(Err(std::io::Error::other(format!( - "{}: Entry with no header", + "line {}: Entry with no header", n + 1 )))) } @@ -196,6 +210,7 @@ impl<'cfg, Input: Iterator>> Iterator fn read_input(input: impl std::io::Read) -> Result<(Vec, Config), std::io::Error> { let mut config = Config { column_threshold: 2, + static_columns: vec![], }; let reader = Reader::new(&mut config, std::io::BufReader::new(input).lines()); reader @@ -224,9 +239,17 @@ fn column_counts(rows: &[Rowlike]) -> Vec<(usize, String)> { counts } fn column_order(config: &Config, rows: &[Rowlike]) -> Vec { + let static_columns: HashSet<&str> = config + .static_columns + .iter() + .flatten() + .map(std::string::String::as_str) + .collect(); column_counts(rows) .into_iter() - .filter_map(|(n, col)| (n >= config.column_threshold).then_some(col)) + .filter_map(|(n, col)| { + (n >= config.column_threshold && !static_columns.contains(col.as_str())).then_some(col) + }) .collect() } @@ -293,35 +316,52 @@ fn render_all_leftovers(row: &Row) -> HTML { ) } -fn render_row(columns: &[String], rowlike: &mut Rowlike) -> HTML { +fn render_row(config: &Config, columns: &[String], rowlike: &mut Rowlike) -> HTML { match rowlike { Rowlike::Spacer => HTML::from("\n"), Rowlike::Row(row) => { let row_label = HTML::escape(row.label.as_ref()); - let cells = columns + let static_cells = config + .static_columns + .iter() + .map(|ocol| match ocol { + Some(col) => render_cell(col, row), + None => HTML::from(r#""#), + }) + .collect::(); + let dynamic_cells = columns .iter() .map(|col| render_cell(col, row)) .collect::(); let leftovers = render_all_leftovers(row); HTML(format!( - "{row_label}{cells}{leftovers}\n" + "{row_label}{static_cells}{dynamic_cells}{leftovers}\n" )) } } } -fn render_column_headers(columns: &[String]) -> HTML { +fn render_column_headers(config: &Config, columns: &[String]) -> HTML { + let static_columns = config.static_columns.iter().map(|oc| oc.as_ref()); + let dynamic_columns = columns.iter().map(Some); HTML( String::from(r#""#) - + &columns.iter().fold(String::new(), |mut acc, col| { - let col_header = HTML::escape(col.as_ref()); - write!( - &mut acc, - r#"
{col_header}
"# - ) - .unwrap(); - acc - }) + + &static_columns + .chain(dynamic_columns) + .fold(String::new(), |mut acc, ocol| { + match ocol { + Some(col) => { + let col_header = HTML::escape(col); + write!( + &mut acc, + r#"
{col_header}
"# + ) + } + None => write!(&mut acc, r#""#), + } + .unwrap(); + acc + }) + "\n", ) } @@ -337,9 +377,9 @@ pub fn tablify(input: impl std::io::Read) -> Result { let columns = column_order(&config, &rows); Ok(HTML(format!( "{HEADER}{}{}{FOOTER}", - render_column_headers(&columns), + render_column_headers(&config, &columns), rows.into_iter() - .map(|mut r| render_row(&columns, &mut r)) + .map(|mut r| render_row(&config, &columns, &mut r)) .collect::() ))) } @@ -479,11 +519,11 @@ mod tests { let bad = read_rows(&b" foo"[..]); assert!(bad.is_err()); - assert!(format!("{bad:?}").contains("1: Entry with no header")); + assert!(format!("{bad:?}").contains("line 1: Entry with no header")); let bad2 = read_rows(&b"foo\n\n bar"[..]); assert!(bad2.is_err()); - assert!(format!("{bad2:?}").contains("3: Entry with no header")); + assert!(format!("{bad2:?}").contains("line 3: Entry with no header")); } #[test] @@ -494,10 +534,18 @@ mod tests { .column_threshold, 10 ); + assert_eq!( + read_config(&b"!col foo"[..]).unwrap().static_columns, + vec![Some("foo".to_owned())] + ); + + let bad_command = read_config(&b"!no such command"[..]); + assert!(bad_command.is_err()); + assert!(format!("{bad_command:?}").contains("line 1: Unknown command")); let bad_num = read_config(&b"!col_threshold foo"[..]); assert!(bad_num.is_err()); - assert!(format!("{bad_num:?}").contains("Parse")); + assert!(format!("{bad_num:?}").contains("line 1: col_threshold must be numeric")); } #[test] @@ -674,6 +722,10 @@ mod tests { fn test_render_row() { assert_eq!( render_row( + &Config { + column_threshold: 0, + static_columns: vec![], + }, &["foo".to_owned()], &mut Rowlike::Row(Row { label: "nope".to_owned(), @@ -682,6 +734,47 @@ mod tests { ), HTML::from( r#"nopebar +"# + ) + ); + assert_eq!( + render_row( + &Config { + column_threshold: 0, + static_columns: vec![Some("foo".to_owned()), Some("bar".to_owned())], + }, + &["baz".to_owned()], + &mut Rowlike::Row(Row { + label: "nope".to_owned(), + entries: HashMap::from([ + ("bar".to_owned(), vec![Some("r".to_owned())]), + ("baz".to_owned(), vec![Some("z".to_owned())]), + ("foo".to_owned(), vec![Some("f".to_owned())]), + ]), + }) + ), + HTML::from( + r#"nopefrz +"# + ) + ); + assert_eq!( + render_row( + &Config { + column_threshold: 0, + static_columns: vec![Some("foo".to_owned()), None, Some("bar".to_owned())], + }, + &[], + &mut Rowlike::Row(Row { + label: "nope".to_owned(), + entries: HashMap::from([ + ("bar".to_owned(), vec![Some("r".to_owned())]), + ("foo".to_owned(), vec![Some("f".to_owned())]), + ]), + }) + ), + HTML::from( + r#"nopefr "# ) );