glib/
regex.rs

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
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
// Take a look at the license at the top of the repository in the LICENSE file.

// rustdoc-stripper-ignore-next
//! This module is inefficient and should not be used by Rust programs except for
//! compatibility with GLib.Regex based APIs.

use crate::{
    ffi, translate::*, GStr, GStringPtr, MatchInfo, PtrSlice, Regex, RegexCompileFlags,
    RegexMatchFlags,
};
use std::{mem, ptr};

impl Regex {
    /// Retrieves the number of the subexpression named @name.
    /// ## `name`
    /// name of the subexpression
    ///
    /// # Returns
    ///
    /// The number of the subexpression or -1 if @name
    ///   does not exists
    #[doc(alias = "g_regex_get_string_number")]
    #[doc(alias = "get_string_number")]
    pub fn string_number(&self, name: impl IntoGStr) -> i32 {
        name.run_with_gstr(|name| unsafe {
            ffi::g_regex_get_string_number(self.to_glib_none().0, name.to_glib_none().0)
        })
    }

    /// Escapes the nul characters in @string to "\x00".  It can be used
    /// to compile a regex with embedded nul characters.
    ///
    /// For completeness, @length can be -1 for a nul-terminated string.
    /// In this case the output string will be of course equal to @string.
    /// ## `string`
    /// the string to escape
    /// ## `length`
    /// the length of @string
    ///
    /// # Returns
    ///
    /// a newly-allocated escaped string
    #[doc(alias = "g_regex_escape_nul")]
    pub fn escape_nul(string: impl IntoGStr) -> crate::GString {
        unsafe {
            string.run_with_gstr(|string| {
                from_glib_full(ffi::g_regex_escape_nul(
                    string.to_glib_none().0,
                    string.len() as _,
                ))
            })
        }
    }

    /// Escapes the special characters used for regular expressions
    /// in @string, for instance "a.b*c" becomes "a\.b\*c". This
    /// function is useful to dynamically generate regular expressions.
    ///
    /// @string can contain nul characters that are replaced with "\0",
    /// in this case remember to specify the correct length of @string
    /// in @length.
    /// ## `string`
    /// the string to escape
    /// ## `length`
    /// the length of @string, in bytes, or -1 if @string is nul-terminated
    ///
    /// # Returns
    ///
    /// a newly-allocated escaped string
    #[doc(alias = "g_regex_escape_string")]
    pub fn escape_string(string: impl IntoGStr) -> crate::GString {
        unsafe {
            string.run_with_gstr(|string| {
                from_glib_full(ffi::g_regex_escape_string(
                    string.to_glib_none().0,
                    string.len() as _,
                ))
            })
        }
    }

    /// Checks whether @replacement is a valid replacement string
    /// (see g_regex_replace()), i.e. that all escape sequences in
    /// it are valid.
    ///
    /// If @has_references is not [`None`] then @replacement is checked
    /// for pattern references. For instance, replacement text 'foo\n'
    /// does not contain references and may be evaluated without information
    /// about actual match, but '\0\1' (whole match followed by first
    /// subpattern) requires valid #GMatchInfo object.
    /// ## `replacement`
    /// the replacement string
    ///
    /// # Returns
    ///
    /// whether @replacement is a valid replacement string
    ///
    /// ## `has_references`
    /// location to store information about
    ///   references in @replacement or [`None`]
    #[doc(alias = "g_regex_check_replacement")]
    pub fn check_replacement(replacement: impl IntoGStr) -> Result<bool, crate::Error> {
        replacement.run_with_gstr(|replacement| unsafe {
            let mut has_references = mem::MaybeUninit::uninit();
            let mut error = ptr::null_mut();
            let is_ok = ffi::g_regex_check_replacement(
                replacement.to_glib_none().0,
                has_references.as_mut_ptr(),
                &mut error,
            );
            debug_assert_eq!(is_ok == crate::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(from_glib(has_references.assume_init()))
            } else {
                Err(from_glib_full(error))
            }
        })
    }

    /// Scans for a match in @string for @pattern.
    ///
    /// This function is equivalent to g_regex_match() but it does not
    /// require to compile the pattern with g_regex_new(), avoiding some
    /// lines of code when you need just to do a match without extracting
    /// substrings, capture counts, and so on.
    ///
    /// If this function is to be called on the same @pattern more than
    /// once, it's more efficient to compile the pattern once with
    /// g_regex_new() and then use g_regex_match().
    /// ## `pattern`
    /// the regular expression
    /// ## `string`
    /// the string to scan for matches
    /// ## `compile_options`
    /// compile options for the regular expression, or 0
    /// ## `match_options`
    /// match options, or 0
    ///
    /// # Returns
    ///
    /// [`true`] if the string matched, [`false`] otherwise
    #[doc(alias = "g_regex_match_simple")]
    pub fn match_simple(
        pattern: impl IntoGStr,
        string: impl IntoGStr,
        compile_options: RegexCompileFlags,
        match_options: RegexMatchFlags,
    ) -> bool {
        pattern.run_with_gstr(|pattern| {
            string.run_with_gstr(|string| unsafe {
                from_glib(ffi::g_regex_match_simple(
                    pattern.to_glib_none().0,
                    string.to_glib_none().0,
                    compile_options.into_glib(),
                    match_options.into_glib(),
                ))
            })
        })
    }

    /// Replaces all occurrences of the pattern in @self with the
    /// replacement text. Backreferences of the form `\number` or
    /// `\g<number>` in the replacement text are interpolated by the
    /// number-th captured subexpression of the match, `\g<name>` refers
    /// to the captured subexpression with the given name. `\0` refers
    /// to the complete match, but `\0` followed by a number is the octal
    /// representation of a character. To include a literal `\` in the
    /// replacement, write `\\\\`.
    ///
    /// There are also escapes that changes the case of the following text:
    ///
    /// - \l: Convert to lower case the next character
    /// - \u: Convert to upper case the next character
    /// - \L: Convert to lower case till \E
    /// - \U: Convert to upper case till \E
    /// - \E: End case modification
    ///
    /// If you do not need to use backreferences use g_regex_replace_literal().
    ///
    /// The @replacement string must be UTF-8 encoded even if [`RegexCompileFlags::RAW`][crate::RegexCompileFlags::RAW] was
    /// passed to g_regex_new(). If you want to use not UTF-8 encoded strings
    /// you can use g_regex_replace_literal().
    ///
    /// Setting @start_position differs from just passing over a shortened
    /// string and setting [`RegexMatchFlags::NOTBOL`][crate::RegexMatchFlags::NOTBOL] in the case of a pattern that
    /// begins with any kind of lookbehind assertion, such as "\b".
    /// ## `string`
    /// the string to perform matches against
    /// ## `start_position`
    /// starting index of the string to match, in bytes
    /// ## `replacement`
    /// text to replace each match with
    /// ## `match_options`
    /// options for the match
    ///
    /// # Returns
    ///
    /// a newly allocated string containing the replacements
    #[doc(alias = "g_regex_replace")]
    pub fn replace(
        &self,
        string: impl IntoGStr,
        start_position: i32,
        replacement: impl IntoGStr,
        match_options: RegexMatchFlags,
    ) -> Result<crate::GString, crate::Error> {
        unsafe {
            string.run_with_gstr(|string| {
                replacement.run_with_gstr(|replacement| {
                    let mut error = ptr::null_mut();
                    let ret = ffi::g_regex_replace(
                        self.to_glib_none().0,
                        string.as_ptr() as *const _,
                        string.len() as _,
                        start_position,
                        replacement.to_glib_none().0,
                        match_options.into_glib(),
                        &mut error,
                    );
                    if error.is_null() {
                        Ok(from_glib_full(ret))
                    } else {
                        Err(from_glib_full(error))
                    }
                })
            })
        }
    }

    /// Using the standard algorithm for regular expression matching only
    /// the longest match in the string is retrieved. This function uses
    /// a different algorithm so it can retrieve all the possible matches.
    /// For more documentation see g_regex_match_all_full().
    ///
    /// A #GMatchInfo structure, used to get information on the match, is
    /// stored in @match_info if not [`None`]. Note that if @match_info is
    /// not [`None`] then it is created even if the function returns [`false`],
    /// i.e. you must free it regardless if regular expression actually
    /// matched.
    ///
    /// @string is not copied and is used in #GMatchInfo internally. If
    /// you use any #GMatchInfo method (except g_match_info_free()) after
    /// freeing or modifying @string then the behaviour is undefined.
    /// ## `string`
    /// the string to scan for matches
    /// ## `match_options`
    /// match options
    ///
    /// # Returns
    ///
    /// [`true`] is the string matched, [`false`] otherwise
    ///
    /// ## `match_info`
    /// pointer to location where to store
    ///     the #GMatchInfo, or [`None`] if you do not need it
    #[doc(alias = "g_regex_match_all")]
    pub fn match_all<'input>(
        &self,
        string: &'input GStr,
        match_options: RegexMatchFlags,
    ) -> Option<MatchInfo<'input>> {
        self.match_all_full(string, 0, match_options).ok()
    }

    /// Using the standard algorithm for regular expression matching only
    /// the longest match in the @string is retrieved, it is not possible
    /// to obtain all the available matches. For instance matching
    /// `"<a> <b> <c>"` against the pattern `"<.*>"`
    /// you get `"<a> <b> <c>"`.
    ///
    /// This function uses a different algorithm (called DFA, i.e. deterministic
    /// finite automaton), so it can retrieve all the possible matches, all
    /// starting at the same point in the string. For instance matching
    /// `"<a> <b> <c>"` against the pattern `"<.*>"`
    /// you would obtain three matches: `"<a> <b> <c>"`,
    /// `"<a> <b>"` and `"<a>"`.
    ///
    /// The number of matched strings is retrieved using
    /// g_match_info_get_match_count(). To obtain the matched strings and
    /// their position you can use, respectively, g_match_info_fetch() and
    /// g_match_info_fetch_pos(). Note that the strings are returned in
    /// reverse order of length; that is, the longest matching string is
    /// given first.
    ///
    /// Note that the DFA algorithm is slower than the standard one and it
    /// is not able to capture substrings, so backreferences do not work.
    ///
    /// Setting @start_position differs from just passing over a shortened
    /// string and setting [`RegexMatchFlags::NOTBOL`][crate::RegexMatchFlags::NOTBOL] in the case of a pattern
    /// that begins with any kind of lookbehind assertion, such as "\b".
    ///
    /// Unless [`RegexCompileFlags::RAW`][crate::RegexCompileFlags::RAW] is specified in the options, @string must be valid UTF-8.
    ///
    /// A #GMatchInfo structure, used to get information on the match, is
    /// stored in @match_info if not [`None`]. Note that if @match_info is
    /// not [`None`] then it is created even if the function returns [`false`],
    /// i.e. you must free it regardless if regular expression actually
    /// matched.
    ///
    /// @string is not copied and is used in #GMatchInfo internally. If
    /// you use any #GMatchInfo method (except g_match_info_free()) after
    /// freeing or modifying @string then the behaviour is undefined.
    /// ## `string`
    /// the string to scan for matches
    /// ## `start_position`
    /// starting index of the string to match, in bytes
    /// ## `match_options`
    /// match options
    ///
    /// # Returns
    ///
    /// [`true`] is the string matched, [`false`] otherwise
    ///
    /// ## `match_info`
    /// pointer to location where to store
    ///     the #GMatchInfo, or [`None`] if you do not need it
    #[doc(alias = "g_regex_match_all_full")]
    pub fn match_all_full<'input>(
        &self,
        string: &'input GStr,
        start_position: i32,
        match_options: RegexMatchFlags,
    ) -> Result<MatchInfo<'input>, crate::Error> {
        unsafe {
            let mut match_info = ptr::null_mut();
            let mut error = ptr::null_mut();
            let is_ok = ffi::g_regex_match_all_full(
                self.to_glib_none().0,
                string.to_glib_none().0,
                string.len() as _,
                start_position,
                match_options.into_glib(),
                &mut match_info,
                &mut error,
            );
            debug_assert_eq!(is_ok == crate::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(from_glib_full(match_info))
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    /// Scans for a match in @string for the pattern in @self.
    /// The @match_options are combined with the match options specified
    /// when the @self structure was created, letting you have more
    /// flexibility in reusing #GRegex structures.
    ///
    /// Unless [`RegexCompileFlags::RAW`][crate::RegexCompileFlags::RAW] is specified in the options, @string must be valid UTF-8.
    ///
    /// A #GMatchInfo structure, used to get information on the match,
    /// is stored in @match_info if not [`None`]. Note that if @match_info
    /// is not [`None`] then it is created even if the function returns [`false`],
    /// i.e. you must free it regardless if regular expression actually matched.
    ///
    /// To retrieve all the non-overlapping matches of the pattern in
    /// string you can use g_match_info_next().
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// print_uppercase_words (const gchar *string)
    /// {
    ///   // Print all uppercase-only words.
    ///   GRegex *regex;
    ///   GMatchInfo *match_info;
    ///
    ///   regex = g_regex_new ("[A-Z]+", G_REGEX_DEFAULT, G_REGEX_MATCH_DEFAULT, NULL);
    ///   g_regex_match (regex, string, 0, &match_info);
    ///   while (g_match_info_matches (match_info))
    ///     {
    ///       gchar *word = g_match_info_fetch (match_info, 0);
    ///       g_print ("Found: %s\n", word);
    ///       g_free (word);
    ///       g_match_info_next (match_info, NULL);
    ///     }
    ///   g_match_info_free (match_info);
    ///   g_regex_unref (regex);
    /// }
    /// ```
    ///
    /// @string is not copied and is used in #GMatchInfo internally. If
    /// you use any #GMatchInfo method (except g_match_info_free()) after
    /// freeing or modifying @string then the behaviour is undefined.
    /// ## `string`
    /// the string to scan for matches
    /// ## `match_options`
    /// match options
    ///
    /// # Returns
    ///
    /// [`true`] is the string matched, [`false`] otherwise
    ///
    /// ## `match_info`
    /// pointer to location where to store
    ///     the #GMatchInfo, or [`None`] if you do not need it
    #[doc(alias = "g_regex_match")]
    pub fn match_<'input>(
        &self,
        string: &'input GStr,
        match_options: RegexMatchFlags,
    ) -> Option<MatchInfo<'input>> {
        self.match_full(string, 0, match_options).ok()
    }

    /// Scans for a match in @string for the pattern in @self.
    /// The @match_options are combined with the match options specified
    /// when the @self structure was created, letting you have more
    /// flexibility in reusing #GRegex structures.
    ///
    /// Setting @start_position differs from just passing over a shortened
    /// string and setting [`RegexMatchFlags::NOTBOL`][crate::RegexMatchFlags::NOTBOL] in the case of a pattern
    /// that begins with any kind of lookbehind assertion, such as "\b".
    ///
    /// Unless [`RegexCompileFlags::RAW`][crate::RegexCompileFlags::RAW] is specified in the options, @string must be valid UTF-8.
    ///
    /// A #GMatchInfo structure, used to get information on the match, is
    /// stored in @match_info if not [`None`]. Note that if @match_info is
    /// not [`None`] then it is created even if the function returns [`false`],
    /// i.e. you must free it regardless if regular expression actually
    /// matched.
    ///
    /// @string is not copied and is used in #GMatchInfo internally. If
    /// you use any #GMatchInfo method (except g_match_info_free()) after
    /// freeing or modifying @string then the behaviour is undefined.
    ///
    /// To retrieve all the non-overlapping matches of the pattern in
    /// string you can use g_match_info_next().
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// print_uppercase_words (const gchar *string)
    /// {
    ///   // Print all uppercase-only words.
    ///   GRegex *regex;
    ///   GMatchInfo *match_info;
    ///   GError *error = NULL;
    ///
    ///   regex = g_regex_new ("[A-Z]+", G_REGEX_DEFAULT, G_REGEX_MATCH_DEFAULT, NULL);
    ///   g_regex_match_full (regex, string, -1, 0, 0, &match_info, &error);
    ///   while (g_match_info_matches (match_info))
    ///     {
    ///       gchar *word = g_match_info_fetch (match_info, 0);
    ///       g_print ("Found: %s\n", word);
    ///       g_free (word);
    ///       g_match_info_next (match_info, &error);
    ///     }
    ///   g_match_info_free (match_info);
    ///   g_regex_unref (regex);
    ///   if (error != NULL)
    ///     {
    ///       g_printerr ("Error while matching: %s\n", error->message);
    ///       g_error_free (error);
    ///     }
    /// }
    /// ```
    /// ## `string`
    /// the string to scan for matches
    /// ## `start_position`
    /// starting index of the string to match, in bytes
    /// ## `match_options`
    /// match options
    ///
    /// # Returns
    ///
    /// [`true`] is the string matched, [`false`] otherwise
    ///
    /// ## `match_info`
    /// pointer to location where to store
    ///     the #GMatchInfo, or [`None`] if you do not need it
    #[doc(alias = "g_regex_match_full")]
    pub fn match_full<'input>(
        &self,
        string: &'input GStr,
        start_position: i32,
        match_options: RegexMatchFlags,
    ) -> Result<MatchInfo<'input>, crate::Error> {
        unsafe {
            let mut match_info = ptr::null_mut();
            let mut error = ptr::null_mut();
            let is_ok = ffi::g_regex_match_full(
                self.to_glib_none().0,
                string.to_glib_none().0,
                string.len() as _,
                start_position,
                match_options.into_glib(),
                &mut match_info,
                &mut error,
            );
            debug_assert_eq!(is_ok == crate::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(from_glib_full(match_info))
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    /// Replaces all occurrences of the pattern in @self with the
    /// replacement text. @replacement is replaced literally, to
    /// include backreferences use g_regex_replace().
    ///
    /// Setting @start_position differs from just passing over a
    /// shortened string and setting [`RegexMatchFlags::NOTBOL`][crate::RegexMatchFlags::NOTBOL] in the
    /// case of a pattern that begins with any kind of lookbehind
    /// assertion, such as "\b".
    /// ## `string`
    /// the string to perform matches against
    /// ## `start_position`
    /// starting index of the string to match, in bytes
    /// ## `replacement`
    /// text to replace each match with
    /// ## `match_options`
    /// options for the match
    ///
    /// # Returns
    ///
    /// a newly allocated string containing the replacements
    #[doc(alias = "g_regex_replace_literal")]
    pub fn replace_literal(
        &self,
        string: impl IntoGStr,
        start_position: i32,
        replacement: impl IntoGStr,
        match_options: RegexMatchFlags,
    ) -> Result<crate::GString, crate::Error> {
        unsafe {
            string.run_with_gstr(|string| {
                replacement.run_with_gstr(|replacement| {
                    let mut error = ptr::null_mut();
                    let ret = ffi::g_regex_replace_literal(
                        self.to_glib_none().0,
                        string.to_glib_none().0,
                        string.len() as _,
                        start_position,
                        replacement.to_glib_none().0,
                        match_options.into_glib(),
                        &mut error,
                    );
                    if error.is_null() {
                        Ok(from_glib_full(ret))
                    } else {
                        Err(from_glib_full(error))
                    }
                })
            })
        }
    }

    /// Breaks the string on the pattern, and returns an array of the tokens.
    /// If the pattern contains capturing parentheses, then the text for each
    /// of the substrings will also be returned. If the pattern does not match
    /// anywhere in the string, then the whole string is returned as the first
    /// token.
    ///
    /// As a special case, the result of splitting the empty string "" is an
    /// empty vector, not a vector containing a single string. The reason for
    /// this special case is that being able to represent an empty vector is
    /// typically more useful than consistent handling of empty elements. If
    /// you do need to represent empty elements, you'll need to check for the
    /// empty string before calling this function.
    ///
    /// A pattern that can match empty strings splits @string into separate
    /// characters wherever it matches the empty string between characters.
    /// For example splitting "ab c" using as a separator "\s*", you will get
    /// "a", "b" and "c".
    /// ## `string`
    /// the string to split with the pattern
    /// ## `match_options`
    /// match time option flags
    ///
    /// # Returns
    ///
    /// a [`None`]-terminated gchar ** array. Free
    /// it using g_strfreev()
    #[doc(alias = "g_regex_split")]
    pub fn split(
        &self,
        string: impl IntoGStr,
        match_options: RegexMatchFlags,
    ) -> PtrSlice<GStringPtr> {
        self.split_full(string, 0, match_options, 0)
            .unwrap_or_default()
    }

    /// Breaks the string on the pattern, and returns an array of the tokens.
    /// If the pattern contains capturing parentheses, then the text for each
    /// of the substrings will also be returned. If the pattern does not match
    /// anywhere in the string, then the whole string is returned as the first
    /// token.
    ///
    /// As a special case, the result of splitting the empty string "" is an
    /// empty vector, not a vector containing a single string. The reason for
    /// this special case is that being able to represent an empty vector is
    /// typically more useful than consistent handling of empty elements. If
    /// you do need to represent empty elements, you'll need to check for the
    /// empty string before calling this function.
    ///
    /// A pattern that can match empty strings splits @string into separate
    /// characters wherever it matches the empty string between characters.
    /// For example splitting "ab c" using as a separator "\s*", you will get
    /// "a", "b" and "c".
    ///
    /// Setting @start_position differs from just passing over a shortened
    /// string and setting [`RegexMatchFlags::NOTBOL`][crate::RegexMatchFlags::NOTBOL] in the case of a pattern
    /// that begins with any kind of lookbehind assertion, such as "\b".
    /// ## `string`
    /// the string to split with the pattern
    /// ## `start_position`
    /// starting index of the string to match, in bytes
    /// ## `match_options`
    /// match time option flags
    /// ## `max_tokens`
    /// the maximum number of tokens to split @string into.
    ///   If this is less than 1, the string is split completely
    ///
    /// # Returns
    ///
    /// a [`None`]-terminated gchar ** array. Free
    /// it using g_strfreev()
    #[doc(alias = "g_regex_split_full")]
    pub fn split_full(
        &self,
        string: impl IntoGStr,
        start_position: i32,
        match_options: RegexMatchFlags,
        max_tokens: i32,
    ) -> Result<PtrSlice<GStringPtr>, crate::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            string.run_with_gstr(|string| {
                let ret = ffi::g_regex_split_full(
                    self.to_glib_none().0,
                    string.to_glib_none().0,
                    string.len() as _,
                    start_position,
                    match_options.into_glib(),
                    max_tokens,
                    &mut error,
                );
                if error.is_null() {
                    Ok(FromGlibPtrContainer::from_glib_full(ret))
                } else {
                    Err(from_glib_full(error))
                }
            })
        }
    }

    /// Breaks the string on the pattern, and returns an array of
    /// the tokens. If the pattern contains capturing parentheses,
    /// then the text for each of the substrings will also be returned.
    /// If the pattern does not match anywhere in the string, then the
    /// whole string is returned as the first token.
    ///
    /// This function is equivalent to g_regex_split() but it does
    /// not require to compile the pattern with g_regex_new(), avoiding
    /// some lines of code when you need just to do a split without
    /// extracting substrings, capture counts, and so on.
    ///
    /// If this function is to be called on the same @pattern more than
    /// once, it's more efficient to compile the pattern once with
    /// g_regex_new() and then use g_regex_split().
    ///
    /// As a special case, the result of splitting the empty string ""
    /// is an empty vector, not a vector containing a single string.
    /// The reason for this special case is that being able to represent
    /// an empty vector is typically more useful than consistent handling
    /// of empty elements. If you do need to represent empty elements,
    /// you'll need to check for the empty string before calling this
    /// function.
    ///
    /// A pattern that can match empty strings splits @string into
    /// separate characters wherever it matches the empty string between
    /// characters. For example splitting "ab c" using as a separator
    /// "\s*", you will get "a", "b" and "c".
    /// ## `pattern`
    /// the regular expression
    /// ## `string`
    /// the string to scan for matches
    /// ## `compile_options`
    /// compile options for the regular expression, or 0
    /// ## `match_options`
    /// match options, or 0
    ///
    /// # Returns
    ///
    /// a [`None`]-terminated array of strings. Free
    /// it using g_strfreev()
    #[doc(alias = "g_regex_split_simple")]
    pub fn split_simple(
        pattern: impl IntoGStr,
        string: impl IntoGStr,
        compile_options: RegexCompileFlags,
        match_options: RegexMatchFlags,
    ) -> PtrSlice<GStringPtr> {
        pattern.run_with_gstr(|pattern| {
            string.run_with_gstr(|string| unsafe {
                FromGlibPtrContainer::from_glib_full(ffi::g_regex_split_simple(
                    pattern.to_glib_none().0,
                    string.to_glib_none().0,
                    compile_options.into_glib(),
                    match_options.into_glib(),
                ))
            })
        })
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::RegexCompileFlags;

    #[test]
    fn test_replace_literal() {
        let regex = Regex::new(
            "s[ai]mple",
            RegexCompileFlags::OPTIMIZE,
            RegexMatchFlags::DEFAULT,
        )
        .expect("Regex new")
        .expect("Null regex");

        let quote = "This is a simple sample.";
        let result = regex
            .replace_literal(quote, 0, "XXX", RegexMatchFlags::DEFAULT)
            .expect("regex replace");

        assert_eq!(result, "This is a XXX XXX.");
    }

    #[test]
    fn test_split() {
        let regex = Regex::new(
            "s[ai]mple",
            RegexCompileFlags::OPTIMIZE,
            RegexMatchFlags::DEFAULT,
        )
        .expect("Regex new")
        .expect("Null regex");

        let quote = "This is a simple sample.";
        let result = regex.split(quote, RegexMatchFlags::DEFAULT);

        assert_eq!(result.len(), 3);
        assert_eq!(result[0], "This is a ");
        assert_eq!(result[1], " ");
        assert_eq!(result[2], ".");
    }
}