git.scottworley.com Git - tablify/blob - src/lib.rs

   1 use std::borrow::ToOwned;
   2 use std::collections::{HashMap, HashSet};
   3 use std::fmt::Write;
   4 use std::io::BufRead;
   5 use std::iter::Iterator;
   6
   7 #[derive(PartialEq, Eq, Debug)]
   8 struct Config {
   9     column_threshold: usize,
  10     static_columns: Vec<String>,
  11 }
  12 impl Config {
  13     fn apply_command(&mut self, line_num: usize, cmd: &str) -> Result<(), std::io::Error> {
  14         if let Some(threshold) = cmd.strip_prefix("col_threshold ") {
  15             self.column_threshold = threshold.parse().map_err(|e| {
  16                 std::io::Error::new(
  17                     std::io::ErrorKind::InvalidInput,
  18                     format!("line {line_num}: col_threshold must be numeric: {e}"),
  19                 )
  20             })?;
  21         } else if let Some(col) = cmd.strip_prefix("col ") {
  22             self.static_columns.push(col.to_owned());
  23         } else {
  24             return Err(std::io::Error::new(
  25                 std::io::ErrorKind::InvalidInput,
  26                 format!("line {line_num}: Unknown command: {cmd}"),
  27             ));
  28         }
  29         Ok(())
  30     }
  31 }
  32
  33 const HEADER: &str = r#"<!DOCTYPE html>
  34 <html>
  35 <head>
  36   <meta charset="utf-8">
  37   <meta name="viewport" content="width=device-width, initial-scale=1">
  38   <style>
  39     td { text-align: center; }
  40     /* h/t https://wabain.github.io/2019/10/13/css-rotated-table-header.html */
  41     th, td { white-space: nowrap; }
  42     th { text-align: left; font-weight: normal; }
  43     th.spacer_row { height: .3em; }
  44     table { border-collapse: collapse }
  45     tr.key > th { height: 10em; vertical-align: bottom; line-height: 1 }
  46     tr.key > th > div { width: 1em; }
  47     tr.key > th > div > div { width: 5em; transform-origin: bottom left; transform: translateX(1em) rotate(-65deg) }
  48     td { border: thin solid gray; }
  49     td.leftover { text-align: left; border: none; padding-left: .4em; }
  50     td.yes { border: thin solid gray; background-color: #ddd; }
  51     /* h/t https://stackoverflow.com/questions/5687035/css-bolding-some-text-without-changing-its-containers-size/46452396#46452396 */
  52     .highlight { text-shadow: -0.06ex 0 black, 0.06ex 0 black; }
  53   </style>
  54   <script>
  55     function highlight(id)       { const e = document.getElementById(id); if (e) { e.classList.add(   "highlight"); } }
  56     function clear_highlight(id) { const e = document.getElementById(id); if (e) { e.classList.remove("highlight"); } }
  57     function h2(a, b)  {       highlight(a);       highlight(b); }
  58     function ch2(a, b) { clear_highlight(a); clear_highlight(b); }
  59   </script>
  60 </head>
  61 <body>
  62   <table>
  63     <tbody>
  64 "#;
  65 const FOOTER: &str = "    </tbody>
  66   </table>
  67 </body>
  68 </html>";
  69
  70 #[derive(PartialEq, Eq, Debug)]
  71 pub struct HTML(String);
  72 impl HTML {
  73     fn escape(value: &str) -> HTML {
  74         let mut escaped: String = String::new();
  75         for c in value.chars() {
  76             match c {
  77                 '>' => escaped.push_str("&gt;"),
  78                 '<' => escaped.push_str("&lt;"),
  79                 '\'' => escaped.push_str("&#39;"),
  80                 '"' => escaped.push_str("&quot;"),
  81                 '&' => escaped.push_str("&amp;"),
  82                 ok_c => escaped.push(ok_c),
  83             }
  84         }
  85         HTML(escaped)
  86     }
  87 }
  88 impl From<&str> for HTML {
  89     fn from(value: &str) -> HTML {
  90         HTML(String::from(value))
  91     }
  92 }
  93 impl FromIterator<HTML> for HTML {
  94     fn from_iter<T>(iter: T) -> HTML
  95     where
  96         T: IntoIterator<Item = HTML>,
  97     {
  98         HTML(iter.into_iter().map(|html| html.0).collect::<String>())
  99     }
 100 }
 101 impl std::fmt::Display for HTML {
 102     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 103         write!(f, "{}", self.0)
 104     }
 105 }
 106
 107 #[derive(Debug, PartialEq, Eq)]
 108 enum InputLine<'a> {
 109     Blank,
 110     RowHeader(&'a str),
 111     Entry(&'a str, Option<&'a str>),
 112     Command(&'a str),
 113 }
 114 impl<'a> From<&'a str> for InputLine<'a> {
 115     fn from(value: &'a str) -> InputLine<'a> {
 116         let trimmed = value.trim_end();
 117         if trimmed.is_empty() {
 118             InputLine::Blank
 119         } else if let Some(cmd) = trimmed.strip_prefix('!') {
 120             InputLine::Command(cmd)
 121         } else if !trimmed.starts_with(' ') {
 122             InputLine::RowHeader(value.trim())
 123         } else {
 124             match value.split_once(':') {
 125                 None => InputLine::Entry(value.trim(), None),
 126                 Some((col, instance)) => InputLine::Entry(col.trim(), Some(instance.trim())),
 127             }
 128         }
 129     }
 130 }
 131
 132 #[derive(Debug, PartialEq, Eq)]
 133 struct Row {
 134     label: String,
 135     entries: HashMap<String, Vec<Option<String>>>,
 136 }
 137
 138 #[derive(Debug, PartialEq, Eq)]
 139 enum Rowlike {
 140     Row(Row),
 141     Spacer,
 142 }
 143
 144 struct Reader<'cfg, Input: Iterator<Item = Result<String, std::io::Error>>> {
 145     input: std::iter::Enumerate<Input>,
 146     row: Option<Row>,
 147     config: &'cfg mut Config,
 148 }
 149 impl<'cfg, Input: Iterator<Item = Result<String, std::io::Error>>> Reader<'cfg, Input> {
 150     fn new(config: &'cfg mut Config, input: Input) -> Self {
 151         Self {
 152             input: input.enumerate(),
 153             row: None,
 154             config,
 155         }
 156     }
 157 }
 158 impl<'cfg, Input: Iterator<Item = Result<String, std::io::Error>>> Iterator
 159     for Reader<'cfg, Input>
 160 {
 161     type Item = Result<Rowlike, std::io::Error>;
 162     fn next(&mut self) -> Option<Self::Item> {
 163         loop {
 164             match self.input.next() {
 165                 None => return Ok(std::mem::take(&mut self.row).map(Rowlike::Row)).transpose(),
 166                 Some((_, Err(e))) => return Some(Err(e)),
 167                 Some((n, Ok(line))) => match InputLine::from(line.as_ref()) {
 168                     InputLine::Command(cmd) => {
 169                         if let Err(e) = self.config.apply_command(n + 1, cmd) {
 170                             return Some(Err(e));
 171                         }
 172                     }
 173                     InputLine::Blank if self.row.is_some() => {
 174                         return Ok(std::mem::take(&mut self.row).map(Rowlike::Row)).transpose()
 175                     }
 176                     InputLine::Blank => return Some(Ok(Rowlike::Spacer)),
 177                     InputLine::Entry(col, instance) => match &mut self.row {
 178                         None => {
 179                             return Some(Err(std::io::Error::other(format!(
 180                                 "line {}: Entry with no header",
 181                                 n + 1
 182                             ))))
 183                         }
 184                         Some(ref mut row) => {
 185                             row.entries
 186                                 .entry(col.to_owned())
 187                                 .and_modify(|is| is.push(instance.map(ToOwned::to_owned)))
 188                                 .or_insert_with(|| vec![instance.map(ToOwned::to_owned)]);
 189                         }
 190                     },
 191                     InputLine::RowHeader(row) => {
 192                         let prev = std::mem::take(&mut self.row);
 193                         self.row = Some(Row {
 194                             label: row.to_owned(),
 195                             entries: HashMap::new(),
 196                         });
 197                         if prev.is_some() {
 198                             return Ok(prev.map(Rowlike::Row)).transpose();
 199                         }
 200                     }
 201                 },
 202             }
 203         }
 204     }
 205 }
 206
 207 fn read_input(input: impl std::io::Read) -> Result<(Vec<Rowlike>, Config), std::io::Error> {
 208     let mut config = Config {
 209         column_threshold: 2,
 210         static_columns: vec![],
 211     };
 212     let reader = Reader::new(&mut config, std::io::BufReader::new(input).lines());
 213     reader
 214         .collect::<Result<Vec<_>, _>>()
 215         .map(|rows| (rows, config))
 216 }
 217
 218 fn column_counts(rows: &[Rowlike]) -> Vec<(usize, String)> {
 219     let empty = HashMap::new();
 220     let mut counts: Vec<_> = rows
 221         .iter()
 222         .flat_map(|rl| match rl {
 223             Rowlike::Row(r) => r.entries.keys(),
 224             Rowlike::Spacer => empty.keys(),
 225         })
 226         .fold(HashMap::new(), |mut cs, col| {
 227             cs.entry(col.to_owned())
 228                 .and_modify(|n| *n += 1)
 229                 .or_insert(1);
 230             cs
 231         })
 232         .into_iter()
 233         .map(|(col, n)| (n, col))
 234         .collect();
 235     counts.sort_unstable_by(|(an, acol), (bn, bcol)| bn.cmp(an).then(acol.cmp(bcol)));
 236     counts
 237 }
 238 fn column_order(config: &Config, rows: &[Rowlike]) -> Vec<String> {
 239     let static_columns: HashSet<&str> = config
 240         .static_columns
 241         .iter()
 242         .map(std::string::String::as_str)
 243         .collect();
 244     column_counts(rows)
 245         .into_iter()
 246         .filter_map(|(n, col)| {
 247             (n >= config.column_threshold && !static_columns.contains(col.as_str())).then_some(col)
 248         })
 249         .collect()
 250 }
 251
 252 fn render_one_instance(instance: &Option<String>) -> HTML {
 253     match instance {
 254         None => HTML::from("✓"),
 255         Some(instance) => HTML::escape(instance.as_ref()),
 256     }
 257 }
 258
 259 fn render_instances(instances: &[Option<String>]) -> HTML {
 260     let all_empty = instances.iter().all(Option::is_none);
 261     if all_empty && instances.len() == 1 {
 262         HTML::from("")
 263     } else if all_empty {
 264         HTML(format!("{}", instances.len()))
 265     } else {
 266         HTML(
 267             instances
 268                 .iter()
 269                 .map(render_one_instance)
 270                 .map(|html| html.0) // Waiting for slice_concat_trait to stabilize
 271                 .collect::<Vec<_>>()
 272                 .join(" "),
 273         )
 274     }
 275 }
 276
 277 fn render_cell(col: &str, row: &mut Row) -> HTML {
 278     let row_label = HTML::escape(row.label.as_ref());
 279     let col_label = HTML::escape(col);
 280     let instances: Option<&Vec<Option<String>>> = row.entries.get(col);
 281     let class = HTML::from(if instances.is_none() { "" } else { "yes" });
 282     let contents = match instances {
 283         None => HTML::from(""),
 284         Some(is) => render_instances(is),
 285     };
 286     row.entries.remove(col);
 287     HTML(format!(
 288         r#"<td class="{class}" onmouseover="h2('{row_label}','{col_label}')" onmouseout="ch2('{row_label}','{col_label}')">{contents}</td>"#
 289     ))
 290 }
 291
 292 fn render_leftover(notcol: &str, instances: &[Option<String>]) -> HTML {
 293     let label = HTML::escape(notcol);
 294     let rest = render_instances(instances);
 295     if rest == HTML::from("") {
 296         HTML(format!("{label}"))
 297     } else {
 298         HTML(format!("{label}: {rest}"))
 299     }
 300 }
 301
 302 fn render_all_leftovers(row: &Row) -> HTML {
 303     let mut order: Vec<_> = row.entries.keys().collect();
 304     order.sort_unstable();
 305     HTML(
 306         order
 307             .into_iter()
 308             .map(|notcol| render_leftover(notcol, row.entries.get(notcol).expect("Key vanished?!")))
 309             .map(|html| html.0) // Waiting for slice_concat_trait to stabilize
 310             .collect::<Vec<_>>()
 311             .join(", "),
 312     )
 313 }
 314
 315 fn render_row(config: &Config, columns: &[String], rowlike: &mut Rowlike) -> HTML {
 316     match rowlike {
 317         Rowlike::Spacer => HTML::from("<tr><th class=\"spacer_row\"></th></tr>\n"),
 318         Rowlike::Row(row) => {
 319             let row_label = HTML::escape(row.label.as_ref());
 320             let static_cells = config
 321                 .static_columns
 322                 .iter()
 323                 .map(|col| render_cell(col, row))
 324                 .collect::<HTML>();
 325             let dynamic_cells = columns
 326                 .iter()
 327                 .map(|col| render_cell(col, row))
 328                 .collect::<HTML>();
 329             let leftovers = render_all_leftovers(row);
 330             HTML(format!(
 331                 "<tr><th id=\"{row_label}\">{row_label}</th>{static_cells}{dynamic_cells}<td class=\"leftover\" onmouseover=\"highlight('{row_label}')\" onmouseout=\"clear_highlight('{row_label}')\">{leftovers}</td></tr>\n"
 332             ))
 333         }
 334     }
 335 }
 336
 337 fn render_column_headers(config: &Config, columns: &[String]) -> HTML {
 338     HTML(
 339         String::from(r#"<tr class="key"><th></th>"#)
 340             + &config.static_columns.iter().chain(columns.iter()).fold(
 341                 String::new(),
 342                 |mut acc, col| {
 343                     let col_header = HTML::escape(col.as_ref());
 344                     write!(
 345                         &mut acc,
 346                         r#"<th id="{col_header}"><div><div>{col_header}</div></div></th>"#
 347                     )
 348                     .unwrap();
 349                     acc
 350                 },
 351             )
 352             + "</tr>\n",
 353     )
 354 }
 355
 356 /// # Errors
 357 ///
 358 /// Will return `Err` if
 359 ///   * there's an i/o error while reading `input`
 360 ///   * the log has invalid syntax:
 361 ///     * an indented line with no preceding non-indented line
 362 pub fn tablify(input: impl std::io::Read) -> Result<HTML, std::io::Error> {
 363     let (rows, config) = read_input(input)?;
 364     let columns = column_order(&config, &rows);
 365     Ok(HTML(format!(
 366         "{HEADER}{}{}{FOOTER}",
 367         render_column_headers(&config, &columns),
 368         rows.into_iter()
 369             .map(|mut r| render_row(&config, &columns, &mut r))
 370             .collect::<HTML>()
 371     )))
 372 }
 373
 374 #[cfg(test)]
 375 mod tests {
 376     use super::*;
 377
 378     #[test]
 379     fn test_parse_line() {
 380         assert_eq!(InputLine::from(""), InputLine::Blank);
 381         assert_eq!(InputLine::from(" "), InputLine::Blank);
 382         assert_eq!(InputLine::from("foo"), InputLine::RowHeader("foo"));
 383         assert_eq!(InputLine::from("foo "), InputLine::RowHeader("foo"));
 384         assert_eq!(InputLine::from(" foo"), InputLine::Entry("foo", None));
 385         assert_eq!(
 386             InputLine::from(" foo:bar"),
 387             InputLine::Entry("foo", Some("bar"))
 388         );
 389         assert_eq!(
 390             InputLine::from(" foo: bar"),
 391             InputLine::Entry("foo", Some("bar"))
 392         );
 393         assert_eq!(
 394             InputLine::from(" foo: bar "),
 395             InputLine::Entry("foo", Some("bar"))
 396         );
 397         assert_eq!(
 398             InputLine::from(" foo:  bar "),
 399             InputLine::Entry("foo", Some("bar"))
 400         );
 401         assert_eq!(
 402             InputLine::from(" foo :  bar "),
 403             InputLine::Entry("foo", Some("bar"))
 404         );
 405     }
 406
 407     fn read_rows(input: impl std::io::Read) -> Result<Vec<Rowlike>, std::io::Error> {
 408         read_input(input).map(|(rows, _)| rows)
 409     }
 410     fn read_config(input: impl std::io::Read) -> Result<Config, std::io::Error> {
 411         read_input(input).map(|(_, config)| config)
 412     }
 413     #[test]
 414     fn test_read_rows() {
 415         assert_eq!(
 416             read_rows(&b"foo"[..]).unwrap(),
 417             vec![Rowlike::Row(Row {
 418                 label: "foo".to_owned(),
 419                 entries: HashMap::new(),
 420             })]
 421         );
 422         assert_eq!(
 423             read_rows(&b"bar"[..]).unwrap(),
 424             vec![Rowlike::Row(Row {
 425                 label: "bar".to_owned(),
 426                 entries: HashMap::new(),
 427             })]
 428         );
 429         assert_eq!(
 430             read_rows(&b"foo\nbar\n"[..]).unwrap(),
 431             vec![
 432                 Rowlike::Row(Row {
 433                     label: "foo".to_owned(),
 434                     entries: HashMap::new(),
 435                 }),
 436                 Rowlike::Row(Row {
 437                     label: "bar".to_owned(),
 438                     entries: HashMap::new(),
 439                 })
 440             ]
 441         );
 442         assert_eq!(
 443             read_rows(&b"foo\n bar\n"[..]).unwrap(),
 444             vec![Rowlike::Row(Row {
 445                 label: "foo".to_owned(),
 446                 entries: HashMap::from([("bar".to_owned(), vec![None])]),
 447             })]
 448         );
 449         assert_eq!(
 450             read_rows(&b"foo\n bar\n baz\n"[..]).unwrap(),
 451             vec![Rowlike::Row(Row {
 452                 label: "foo".to_owned(),
 453                 entries: HashMap::from([
 454                     ("bar".to_owned(), vec![None]),
 455                     ("baz".to_owned(), vec![None])
 456                 ]),
 457             })]
 458         );
 459         assert_eq!(
 460             read_rows(&b"foo\n\nbar\n"[..]).unwrap(),
 461             vec![
 462                 Rowlike::Row(Row {
 463                     label: "foo".to_owned(),
 464                     entries: HashMap::new(),
 465                 }),
 466                 Rowlike::Row(Row {
 467                     label: "bar".to_owned(),
 468                     entries: HashMap::new(),
 469                 })
 470             ]
 471         );
 472         assert_eq!(
 473             read_rows(&b"foo\n\n\nbar\n"[..]).unwrap(),
 474             vec![
 475                 Rowlike::Row(Row {
 476                     label: "foo".to_owned(),
 477                     entries: HashMap::new(),
 478                 }),
 479                 Rowlike::Spacer,
 480                 Rowlike::Row(Row {
 481                     label: "bar".to_owned(),
 482                     entries: HashMap::new(),
 483                 })
 484             ]
 485         );
 486         assert_eq!(
 487             read_rows(&b"foo\n \nbar\n"[..]).unwrap(),
 488             vec![
 489                 Rowlike::Row(Row {
 490                     label: "foo".to_owned(),
 491                     entries: HashMap::new(),
 492                 }),
 493                 Rowlike::Row(Row {
 494                     label: "bar".to_owned(),
 495                     entries: HashMap::new(),
 496                 })
 497             ]
 498         );
 499         assert_eq!(
 500             read_rows(&b"foo  \n bar  \n"[..]).unwrap(),
 501             vec![Rowlike::Row(Row {
 502                 label: "foo".to_owned(),
 503                 entries: HashMap::from([("bar".to_owned(), vec![None])]),
 504             })]
 505         );
 506
 507         let bad = read_rows(&b" foo"[..]);
 508         assert!(bad.is_err());
 509         assert!(format!("{bad:?}").contains("line 1: Entry with no header"));
 510
 511         let bad2 = read_rows(&b"foo\n\n bar"[..]);
 512         assert!(bad2.is_err());
 513         assert!(format!("{bad2:?}").contains("line 3: Entry with no header"));
 514     }
 515
 516     #[test]
 517     fn test_read_config() {
 518         assert_eq!(
 519             read_config(&b"!col_threshold 10"[..])
 520                 .unwrap()
 521                 .column_threshold,
 522             10
 523         );
 524         assert_eq!(
 525             read_config(&b"!col foo"[..]).unwrap().static_columns,
 526             vec!["foo".to_owned()]
 527         );
 528
 529         let bad_command = read_config(&b"!no such command"[..]);
 530         assert!(bad_command.is_err());
 531         assert!(format!("{bad_command:?}").contains("line 1: Unknown command"));
 532
 533         let bad_num = read_config(&b"!col_threshold foo"[..]);
 534         assert!(bad_num.is_err());
 535         assert!(format!("{bad_num:?}").contains("line 1: col_threshold must be numeric"));
 536     }
 537
 538     #[test]
 539     fn test_column_counts() {
 540         assert_eq!(
 541             column_counts(&read_rows(&b"foo\n bar\n baz\n"[..]).unwrap()),
 542             vec![(1, String::from("bar")), (1, String::from("baz"))]
 543         );
 544         assert_eq!(
 545             column_counts(&read_rows(&b"foo\n bar\n baz\nquux\n baz"[..]).unwrap()),
 546             vec![(2, String::from("baz")), (1, String::from("bar"))]
 547         );
 548         assert_eq!(
 549             column_counts(&read_rows(&b"foo\n bar\n bar\n baz\n bar\nquux\n baz"[..]).unwrap()),
 550             vec![(2, String::from("baz")), (1, String::from("bar"))]
 551         );
 552         assert_eq!(
 553             column_counts(
 554                 &read_rows(&b"foo\n bar: 1\n bar: 2\n baz\n bar\nquux\n baz"[..]).unwrap()
 555             ),
 556             vec![(2, String::from("baz")), (1, String::from("bar"))]
 557         );
 558     }
 559
 560     #[test]
 561     fn test_render_cell() {
 562         assert_eq!(
 563             render_cell(
 564                 "foo",
 565                 &mut Row {
 566                     label: "nope".to_owned(),
 567                     entries: HashMap::new(),
 568                 }
 569             ),
 570             HTML::from(
 571                 r#"<td class="" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')"></td>"#
 572             )
 573         );
 574         assert_eq!(
 575             render_cell(
 576                 "foo",
 577                 &mut Row {
 578                     label: "nope".to_owned(),
 579                     entries: HashMap::from([("bar".to_owned(), vec![None])]),
 580                 }
 581             ),
 582             HTML::from(
 583                 r#"<td class="" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')"></td>"#
 584             )
 585         );
 586         assert_eq!(
 587             render_cell(
 588                 "foo",
 589                 &mut Row {
 590                     label: "nope".to_owned(),
 591                     entries: HashMap::from([("foo".to_owned(), vec![None])]),
 592                 }
 593             ),
 594             HTML::from(
 595                 r#"<td class="yes" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')"></td>"#
 596             )
 597         );
 598         assert_eq!(
 599             render_cell(
 600                 "foo",
 601                 &mut Row {
 602                     label: "nope".to_owned(),
 603                     entries: HashMap::from([("foo".to_owned(), vec![None, None])]),
 604                 }
 605             ),
 606             HTML::from(
 607                 r#"<td class="yes" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')">2</td>"#
 608             )
 609         );
 610         assert_eq!(
 611             render_cell(
 612                 "foo",
 613                 &mut Row {
 614                     label: "nope".to_owned(),
 615                     entries: HashMap::from([(
 616                         "foo".to_owned(),
 617                         vec![Some("5".to_owned()), Some("10".to_owned())]
 618                     )]),
 619                 }
 620             ),
 621             HTML::from(
 622                 r#"<td class="yes" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')">5 10</td>"#
 623             )
 624         );
 625         assert_eq!(
 626             render_cell(
 627                 "foo",
 628                 &mut Row {
 629                     label: "nope".to_owned(),
 630                     entries: HashMap::from([("foo".to_owned(), vec![Some("5".to_owned()), None])]),
 631                 }
 632             ),
 633             HTML::from(
 634                 r#"<td class="yes" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')">5 ✓</td>"#
 635             )
 636         );
 637         assert_eq!(
 638             render_cell(
 639                 "heart",
 640                 &mut Row {
 641                     label: "nope".to_owned(),
 642                     entries: HashMap::from([("heart".to_owned(), vec![Some("<3".to_owned())])]),
 643                 }
 644             ),
 645             HTML::from(
 646                 r#"<td class="yes" onmouseover="h2('nope','heart')" onmouseout="ch2('nope','heart')">&lt;3</td>"#
 647             )
 648         );
 649         assert_eq!(
 650             render_cell(
 651                 "foo",
 652                 &mut Row {
 653                     label: "bob's".to_owned(),
 654                     entries: HashMap::from([("foo".to_owned(), vec![None])]),
 655                 }
 656             ),
 657             HTML::from(
 658                 r#"<td class="yes" onmouseover="h2('bob&#39;s','foo')" onmouseout="ch2('bob&#39;s','foo')"></td>"#
 659             )
 660         );
 661         let mut r = Row {
 662             label: "nope".to_owned(),
 663             entries: HashMap::from([
 664                 ("foo".to_owned(), vec![None]),
 665                 ("baz".to_owned(), vec![None]),
 666             ]),
 667         };
 668         assert_eq!(r.entries.len(), 2);
 669         render_cell("foo", &mut r);
 670         assert_eq!(r.entries.len(), 1);
 671         render_cell("bar", &mut r);
 672         assert_eq!(r.entries.len(), 1);
 673         render_cell("baz", &mut r);
 674         assert_eq!(r.entries.len(), 0);
 675     }
 676
 677     #[test]
 678     fn test_render_leftovers() {
 679         assert_eq!(
 680             render_all_leftovers(&Row {
 681                 label: "nope".to_owned(),
 682                 entries: HashMap::from([("foo".to_owned(), vec![None])]),
 683             }),
 684             HTML::from("foo")
 685         );
 686         assert_eq!(
 687             render_all_leftovers(&Row {
 688                 label: "nope".to_owned(),
 689                 entries: HashMap::from([
 690                     ("foo".to_owned(), vec![None]),
 691                     ("bar".to_owned(), vec![None])
 692                 ]),
 693             }),
 694             HTML::from("bar, foo")
 695         );
 696         assert_eq!(
 697             render_all_leftovers(&Row {
 698                 label: "nope".to_owned(),
 699                 entries: HashMap::from([
 700                     ("foo".to_owned(), vec![None]),
 701                     ("bar".to_owned(), vec![None, None])
 702                 ]),
 703             }),
 704             HTML::from("bar: 2, foo")
 705         );
 706     }
 707
 708     #[test]
 709     fn test_render_row() {
 710         assert_eq!(
 711             render_row(
 712                 &Config {
 713                     column_threshold: 0,
 714                     static_columns: vec![],
 715                 },
 716                 &["foo".to_owned()],
 717                 &mut Rowlike::Row(Row {
 718                     label: "nope".to_owned(),
 719                     entries: HashMap::from([("bar".to_owned(), vec![None])]),
 720                 })
 721             ),
 722             HTML::from(
 723                 r#"<tr><th id="nope">nope</th><td class="" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')"></td><td class="leftover" onmouseover="highlight('nope')" onmouseout="clear_highlight('nope')">bar</td></tr>
 724 "#
 725             )
 726         );
 727         assert_eq!(
 728             render_row(
 729                 &Config {
 730                     column_threshold: 0,
 731                     static_columns: vec!["foo".to_owned(), "bar".to_owned()],
 732                 },
 733                 &["baz".to_owned()],
 734                 &mut Rowlike::Row(Row {
 735                     label: "nope".to_owned(),
 736                     entries: HashMap::from([
 737                         ("bar".to_owned(), vec![Some("r".to_owned())]),
 738                         ("baz".to_owned(), vec![Some("z".to_owned())]),
 739                         ("foo".to_owned(), vec![Some("f".to_owned())]),
 740                     ]),
 741                 })
 742             ),
 743             HTML::from(
 744                 r#"<tr><th id="nope">nope</th><td class="yes" onmouseover="h2('nope','foo')" onmouseout="ch2('nope','foo')">f</td><td class="yes" onmouseover="h2('nope','bar')" onmouseout="ch2('nope','bar')">r</td><td class="yes" onmouseover="h2('nope','baz')" onmouseout="ch2('nope','baz')">z</td><td class="leftover" onmouseover="highlight('nope')" onmouseout="clear_highlight('nope')"></td></tr>
 745 "#
 746             )
 747         );
 748     }
 749 }