about summary refs log tree commit diff
path: root/src/main.rs
blob: a785d037921fa0da2055f8e9f70418c2053debd7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
// pull the std into scope and inline it so that we get documentation for it,
// even when running offline
#[doc(inline)]
pub use std;

use std::path::{Path, PathBuf};
use std::io::{self, Read, Write, BufRead, BufReader};
use std::fs::{self, File};
use std::{time};
use structopt::StructOpt;

#[derive(Debug, StructOpt)]
#[structopt(name = "vokobe", about = "A static site generator")]
struct Opt {
    /// Input path 
    #[structopt(parse(from_os_str))]
    in_path: PathBuf,

    /// Output path
    #[structopt(parse(from_os_str))]
    out_path: PathBuf,

    /// Site name (e.g. emile.space)
    site_name: String,

    /// Activate sending analytics to stats.emile.space
    // -a and --analytics will be generated
    // analytics are sent to stats.emile.space
    #[structopt(short, long)]
    analytics: bool,
}

fn main() -> std::io::Result<()> {

    let opt = Opt::from_args();

    let in_path = opt.in_path;
    let out_path = opt.out_path;

    println!("inpath: {}", in_path.display());
    println!("outpath: {}", out_path.display());

    // read the style
    let style_path = Path::new(&in_path).join("style.css");
    let mut style_file = File::open(style_path)
        .expect("could not open style file");
    let mut style = String::new();
    style_file.read_to_string(&mut style)
        .expect("could not read style file to string");

    // read all dirs in the input path
    let pathes = recursive_read_dir(&in_path, false)?;

    println!("---");
    for path in pathes {
        println!("\n");
        println!("[i] {}", path.as_os_str().to_str().unwrap());

        let stripped_path = path.strip_prefix(&in_path)
            .expect(format!(
                "could not strip the in_path prefix: {:?}", in_path).as_str());

        // copy images and other files to the output folder
        if path.is_file() {

            // define the source and destination
            let src = Path::new(&in_path).join(stripped_path);
            let dst = Path::new(&out_path).join(stripped_path);

            // define the destination folder (the dst path without the file) and
            // create it
            let mut dst_folder = dst.clone();
            dst_folder.pop();
            fs::create_dir_all(dst_folder)?;

            // copy the file to the destination
            std::fs::copy(src, dst.as_path())?;
        }

        if stripped_path.ends_with("README.md") {
            println!("\tstripped_path: {:?}", stripped_path);

            // define the "raw" path (no infile prefix, no file)
            let mut ancestors = stripped_path.ancestors();
            ancestors.next();

            let raw_path = ancestors.next()
                .expect("could not extract next ancestor");
            println!("\traw_path: {:?}", raw_path);

            // out + rawpath
            let index_path = out_path.join(raw_path);
            println!("\tindex_path: {:?}", index_path);

            // (out + rawpath) + "index.html"
            let index_file = index_path.join("index.html");
            println!("\tindex_file: {:?}", index_file);

            // - create the dir for the index.html as well as the index.html itself
            fs::create_dir_all(index_path)?;
            let mut file = File::create(&index_file)?;

            write_header(&mut file, &opt.site_name, &style)?;
            write_body_start(&mut file, &opt.site_name)?;
            write_nav(&mut file, in_path.as_path(), raw_path, opt.analytics)?;
            write_same_level(&mut file, in_path.as_path(), raw_path)?;
            write_readme_content(&mut file, in_path.as_path(), raw_path)?;
            write_footer(&mut file)?;

            file.write_all("".as_bytes())?;
        }

    }

    Ok(())
}

/// Write the html header including the style file
fn write_header(file: &mut File, site_name: &String, style: &String) -> std::io::Result<()>{

    // write the header including the style file
    file.write_all(format!(r#"<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>{}</title>

  <style>
  {}
  </style>
</head>
    "#, site_name, style).as_bytes())?;

    Ok(())
}

fn write_body_start(file: &mut File, site_name: &String) -> std::io::Result<()>{
    file.write_all(format!(r#"
<body>
  <header>
    <a href="/">{}</a>
  </header>"#, site_name).as_bytes())?;

    Ok(())
}

/// Write the navigation section to the given file
fn write_nav(file: &mut File, in_path: &Path, raw_path: &Path, analytics: bool)
    -> std::io::Result<()> {

    if analytics == true {
        file.write_all(format!(r#"
  <img src="https://stats.emile.space/count?p=/{}">
  <nav>
    <ul>"#, raw_path.to_str().unwrap()).as_bytes())?;
    } else {
        file.write_all(format!(r#"
  <nav>
    <ul>"#).as_bytes())?;
    }

    // get the nav bar components
    let components = raw_path.components().collect::<Vec<_>>();
    
    // for each list of components (["a"], ["a", "b"], ["a", "b", "c"]), create
    // the path for the list, view all other dirs at that path and write the
    // result to the file
    let mut i = 0;
    let slice = components.as_slice();

    // for each navbar component
    for component in slice {

        // get the items belonging to that navbar item
        // (["a"], ["a", "b"], ["a", "b", "c"])
        let subpath_components = &slice[..i+1];
        i += 1;

        println!("\tsubpath_components:");
        subpath_components.iter().for_each(|c| {
            println!("\t\t{:?}", c);
        });

        let mut subpath_path = PathBuf::new();

        // push the inpath, so we've got a basis from where we can read the
        // subpath items
        // subpath_path = inpath + ???
        subpath_path.push(in_path);

        let mut nav_breadcrumb_link = PathBuf::new();

        // for each item in the subpath, push it into the subpath_path so that
        // in the end, we've got something like this:
        // "inpath" + "a" + "b" + "c"
        for subpath_component in subpath_components {
            subpath_path.push(subpath_component);
            nav_breadcrumb_link.push(subpath_component);
        }

        // make the nav_breadcrumb_link an absolute by prefixing it with a /
        // (this is in scope of the web-page, so this is find) and make it a
        // string
        let nav_breadcrumb_link_absolute 
            = Path::new("/")
                .join(nav_breadcrumb_link);

        let nav_breadcrumb_link
            = nav_breadcrumb_link_absolute.to_str().unwrap();

        // define the name of the breadcrumb
        let nav_breadcrumb_name = component.as_os_str().to_str().unwrap();

        ////////////////////////////////////////////////////////////////////////
        file.write_all(format!(r#"
        <li>
            <a href="{}">{}</a>
            <ul>"#, nav_breadcrumb_link, nav_breadcrumb_name).as_bytes())?;
        ////////////////////////////////////////////////////////////////////////

        // as we don't want to get the items for the individial entry, but on
        // the same level, we push a ".."
        // the subpath_path is now: inpath + subpath + ../
        subpath_path.push("..");

        println!("\t\tsubpath_path: {:?}", subpath_path);

        // read all dirs in the subpath_path, add them to the dirs vector, so
        // that we get a vector containing all the dirs we want
        let mut dirs = Vec::new();
        for entry in fs::read_dir(subpath_path)? {
            let path = &entry?.path();
            if path.is_dir() {
                dirs.push(path.to_path_buf());
            }
        }

        dirs.sort();

        // DROPDOWN
        // extract the link and name for each directory found
        for dir in dirs {
            let d = dir.canonicalize()?;
            let abs_inpath = in_path.canonicalize()?;

            let name = d.file_name().unwrap().to_str().unwrap();
            let rel_link 
                = d.strip_prefix(abs_inpath)
                    .expect(format!(
                        "could not strip the in_path prefix: {:?}",
                        d).as_str());

            let link = Path::new("/").join(rel_link);
            let link = link.as_path().to_str().unwrap();

            println!("\t\t\t{:?} {:?}", name, link);

            // don't add the current page to the dropdown, we're on it already!
            if name == nav_breadcrumb_name {
                continue
            }

            // don't add items starting with a dot to the dropdown, they're
            // hidden!
            if name.starts_with(".") {
                continue
            }

            ////////////////////////////////////////////////////////////////////
            file.write_all(format!(r#"
                <li><a href="{}">{}/</a></li>"#, link, name).as_bytes())?;
            ////////////////////////////////////////////////////////////////////
        }

        ////////////////////////////////////////////////////////////////////////
        file.write_all(r#"
            </ul>
        </li>"#.as_bytes())?;
        ////////////////////////////////////////////////////////////////////////
    }

    ////////////////////////////////////////////////////////////////////////////
    file.write_all(format!(r#"
    </ul>
  </nav>"#).as_bytes())?;
    ////////////////////////////////////////////////////////////////////////////

    Ok(())
}


fn write_same_level(file: &mut File, in_path: &Path, raw_path: &Path)
    -> std::io::Result<()> {

    let search_path = Path::new(in_path).join(raw_path);

    println!("\tsame_level:");
    println!("\t\t{:?}", search_path);

    let mut dirs: Vec<PathBuf> = Vec::new();
    let mut files: Vec<PathBuf> = Vec::new();

    let mut vertical: bool = false;
    let mut show_files: bool = false;

    for entry in fs::read_dir(search_path)? {
        let path = &entry?.path();

        if path.is_dir() {
            dirs.push(path.to_path_buf());
            println!("\t\t\t{:?}", path);
        }
        if path.is_file() {
            files.push(path.to_path_buf());
            if path.file_name().unwrap() == "vertical" {
                vertical = true;
            }
            if path.file_name().unwrap() == "show_files" {
                show_files = true;
            }
            println!("\t\t\t{:?}", path);
        }
    }

    dirs.sort();
    files.sort();

    let in_path = in_path.canonicalize()?;

    if vertical == true {
        file.write_all(format!(r#"
  <ul class="vert">"#).as_bytes())?;
    } else {
        file.write_all(format!(r#"
  <ul>"#).as_bytes())?;
    }

    for dir in dirs {
        let dir = dir.canonicalize()?;
        let dir = dir.strip_prefix(&in_path)
            .expect("could not strip in_path prefix");

        let link = Path::new("/").join(dir);
        let link_str = link.as_path().to_str().unwrap();
        let name = link.file_name().unwrap().to_str().unwrap();

        if name.starts_with(".") {
            continue
        }

        file.write_all(format!(r#"
    <li><a href="{}">{}/</a></li>"#, link_str, name).as_bytes())?;
        println!("\t\t{} {}", link_str, name);
    }

    file.write_all(format!(r#"
  </ul>"#).as_bytes())?;

    if files.len() >= 1 && show_files == true {
        file.write_all(format!(r#"<br>
    <ul>"#).as_bytes())?;

        for f in files {
            let f = f.canonicalize()?;
            let f = f.strip_prefix(&in_path)
                .expect("could not strip in_path prefix");

            let link = Path::new("/").join(f);
            let link_str = link.as_path().to_str().unwrap();
            let name = link.file_name().unwrap().to_str().unwrap();

            if name == "README.md"
                || name == "show_files"
                || name.starts_with(".")
                {
                continue
            };

            file.write_all(format!(r#"
        <li><a href="{}">{}</a></li>"#, link_str, name).as_bytes())?;
            println!("\t\t{} {}", link_str, name);
        }

        file.write_all(format!(r#"
    </ul>"#).as_bytes())?;
    }


    Ok(())
}

fn write_readme_content(file: &mut File, in_path: &Path, raw_path: &Path) 
    -> std::io::Result<()> {

    // define the path of the README.md file
    let readme_file_path 
        = Path::new(in_path).join(raw_path).join("README.md");

    // open the file and read it as a string
    let mut readme_file = File::open(readme_file_path)?;
    let mut readme = String::new();
    readme_file.read_to_string(&mut readme)?;

    file.write_all(format!("<pre>").as_bytes())?;

    // cheap markdown 2 html converter
    for line in readme.split('\n') {

        if line.starts_with("---") {
            file.write_all(format!(r##"
            <hr>"##).as_bytes())?;
        } else if line.starts_with("###") {
            let heading = line.get(4..).unwrap();
            let heading_sanitized = sanitize(heading.to_string());

            file.write_all(format!(r##"</pre>
            <span id="{a}"></span>
            <h3><a href="#{a}">{b}</a></h3>
            <pre>"##, a = heading_sanitized, b = heading).as_bytes())?;

        } else if line.starts_with("##") {
            let heading = line.get(3..).unwrap();
            let heading_sanitized = sanitize(heading.to_string());

            file.write_all(format!(r##"</pre>
            <span id="{a}"></span>
            <h2><a href="#{a}">{b}</a></h2>
            <pre>"##, a = heading_sanitized, b = heading).as_bytes())?;

        } else if line.starts_with("#") {
            let heading = line.get(2..).unwrap();
            let heading_sanitized = sanitize(heading.to_string());

            file.write_all(format!(r##"</pre>
            <span id="{a}"></span>
            <h1><a href="#{a}">{b}</a></h1>
            <pre>"##, a = heading_sanitized, b = heading).as_bytes())?;

        } else if line.starts_with("> ") {
            let line = line.replace("<", "&lt");
            let line = line.get(2..).unwrap();
            file.write_all(format!("</pre><pre class=\"code\">{}</pre><pre>\n", line).as_bytes())?;

        } else if line.starts_with(":::tree") {

            // get all dirs in the current dir recursively
            let tree_files_path = Path::new(in_path).join(raw_path);
            let mut tree_files
                = recursive_read_dir(&tree_files_path, true)?;
            
            // sort them, otherwise we'll get complete chaos
            tree_files.sort();

            for path in tree_files {

                // strip the inpath prefix and raw_path prefix, as we don't need
                // them
                let path 
                    = path.strip_prefix(in_path)
                        .expect("could not strip in_file prefix")
                        .strip_prefix(raw_path)
                        .expect("could not strip raw_path prefix");

                // write the link and the entry name to the file
                let link = Path::new(raw_path).join(path);
                let name = path.file_name().unwrap().to_str().unwrap();

                if name.starts_with(".") {
                    continue
                }

                // count the amount of segments in the path and write spaces for
                // each
                let segments = path.iter().count();
                for _ in 0..(segments-1) {
                    file.write_all(r#"    "#.as_bytes())?;
                }

                file.write_all(
                    format!("<a href=\"/{}\">{}</a>\n",
                        link.display(), name, 
                        ).as_bytes()
                )?;
            }

        } else if line.starts_with(":::toc") {

            for line in readme.split('\n') {
                if line.starts_with("###") {
                    let line = line.get(4..).unwrap();
                    // trim the line to remove the trailing whitespace
                    let line = line.trim();
                    file.write_all(
                        format!(
                            r##"       <a href="#{}">{}</a>
"##,
                            sanitize(line.to_string()),
                            line
                        ).as_bytes()
                    )?;
                } else if line.starts_with("##") {
                    let line = line.get(3..).unwrap();
                    let line = line.trim();
                    file.write_all(
                        format!(
                            r##"    <a href="#{}">{}</a>
"##,
                            sanitize(line.to_string()),
                            line
                        ).as_bytes()
                    )?;
                } else if line.starts_with("#") {
                    let line = line.get(2..).unwrap();
                    let line = line.trim();
                    file.write_all(
                        format!(
                            r##"<a href="#{}">{}</a>
"##,
                            sanitize(line.to_string()),
                            line
                        ).as_bytes()
                    )?;
                }
            }

            
        } else {

            // for the case that nothing of the above matches, just write the
            // content into the html body as it is
            file.write_all(format!("{}\n", line).as_bytes())?;
        }
    }

    Ok(())
}

fn write_footer(file: &mut File) -> std::io::Result<()> {
    file.write_all(format!(r#"<br>
    <br>
    <br>
———
emile - {:?}
</body>
</html>
    <pre>"#,
    time::SystemTime::now()
        .duration_since(time::SystemTime::UNIX_EPOCH).unwrap()
    ).as_bytes())?;

    Ok(())
}

/// sanitize the given string (to lower + space to hypen + keep only
/// [a-zA-Z0-9])
fn sanitize(input: String) -> String {
    let input = input.replace(" ", "-");

    input
        .chars()
        .filter(|c| c.is_ascii_alphanumeric() || c.eq(&'-'))
        .collect::<String>()
        .to_lowercase()
}

/// Return a list of all files in the directory, recursively.
fn recursive_read_dir(dir: &PathBuf, dir_only: bool) -> io::Result<Vec<PathBuf>> {
    // return an empty vec if the given path is not a directory
    if dir.is_dir() == false {
        return Ok(vec![]);
    }

    // get all entries in the gitignore file, if it exists
    let gitignore_entries: Vec<PathBuf> = gitignore_entries(&dir)?;

    // store the child pathes
    let mut entries: Vec<PathBuf> = Vec::new();
    
    // iterate over all items in the dir, pushing the dirs pathes to the dirs
    // vector for returning it
    'outer: for entry in fs::read_dir(dir)? {
        let dir_entry = &entry?;
        let path = dir_entry.path();

        // check if the current entry is part of the gitignore, if so, skip it
        for gitignore_entry in &gitignore_entries {
            if gitignore_entry.to_str() == Some("") {
                continue;
            }
            if path.ends_with(gitignore_entry) {
                println!("gitignore: gitignore_entry: {:?}", gitignore_entry);
                println!("gitignore: path: {:?}", path);
                continue 'outer;
            }
        }

        if dir_only == true {
            if path.is_dir() {
                entries.push(path.to_path_buf());
            }
        } else {
            entries.push(path.to_path_buf());
        }

        // recursively push all dirs from all children to the dirs vector
        let subdirs = recursive_read_dir(&path, dir_only)?;

        for subdir in subdirs {
            entries.push(subdir)
        }
    }

    // return the dirs, the ones from this folder and the ones from all child folders
    Ok(entries)
}

// try to open the gitignore file and read all entries from there.
fn gitignore_entries(dir: &PathBuf) -> io::Result<Vec<PathBuf>> {
    let gitignore_path = Path::new(&dir)
        .join(Path::new(".gitignore"));

    let mut entries: Vec<PathBuf> = Vec::new();
    if let Ok(gitignore) = File::open(&gitignore_path) {
        let reader = BufReader::new(gitignore);

        for line in reader.lines() {
            entries.push(PathBuf::from(line?));
        }
    }

    Ok(entries)
}