-
Notifications
You must be signed in to change notification settings - Fork 825
Expand file tree
/
Copy pathstring.h
More file actions
428 lines (391 loc) · 12.3 KB
/
string.h
File metadata and controls
428 lines (391 loc) · 12.3 KB
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
/**
** @file mruby/string.h - String class
**
** See Copyright Notice in mruby.h
*/
#ifndef MRUBY_STRING_H
#define MRUBY_STRING_H
#include "common.h"
/**
* String class
*/
MRB_BEGIN_DECL
extern const char mrb_digitmap[];
#define RSTRING_EMBED_LEN_MAX \
((mrb_int)(sizeof(void*) * 3 + sizeof(void*) - 32 / CHAR_BIT - 1))
struct RString {
MRB_OBJECT_HEADER;
union {
struct {
mrb_ssize len;
union {
mrb_ssize capa;
struct mrb_shared_string *shared;
struct RString *fshared;
} aux;
char *ptr;
} heap;
} as;
};
struct RStringEmbed {
MRB_OBJECT_HEADER;
char ary[RSTRING_EMBED_LEN_MAX+1];
};
#define RSTR_SET_TYPE(s, type) ((s)->flags = ((s)->flags & ~(MRB_STR_TYPE_MASK|MRB_STR_EMBED_LEN_MASK)) | MRB_STR_##type)
#define MRB_STR_NORMAL 0
#define MRB_STR_SHARED 1
#define MRB_STR_FSHARED 2
#define MRB_STR_NOFREE 4
#define MRB_STR_EMBED 8
#define MRB_STR_TYPE_MASK 15
#define MRB_STR_EMBED_LEN_SHIFT 6
#define MRB_STR_EMBED_LEN_BITS 5
#define MRB_STR_EMBED_LEN_MASK (((1 << MRB_STR_EMBED_LEN_BITS) - 1) << MRB_STR_EMBED_LEN_SHIFT)
#define MRB_STR_BINARY 16
#define MRB_STR_SINGLE_BYTE 32
#define MRB_STR_STATE_MASK 48
#define RSTR_EMBED_P(s) ((s)->flags & MRB_STR_EMBED)
#define RSTR_SET_EMBED_FLAG(s) ((s)->flags |= MRB_STR_EMBED)
#define RSTR_SET_EMBED_LEN(s, n) do {\
size_t tmp_n = (n);\
(s)->flags &= ~MRB_STR_EMBED_LEN_MASK;\
(s)->flags |= (tmp_n) << MRB_STR_EMBED_LEN_SHIFT;\
} while (0)
#define RSTR_SET_LEN(s, n) do {\
if (RSTR_EMBED_P(s)) {\
RSTR_SET_EMBED_LEN((s),(n));\
}\
else {\
(s)->as.heap.len = (mrb_ssize)(n);\
}\
} while (0)
#define RSTR_EMBED_PTR(s) (((struct RStringEmbed*)(s))->ary)
#define RSTR_EMBED_LEN(s)\
(mrb_int)(((s)->flags & MRB_STR_EMBED_LEN_MASK) >> MRB_STR_EMBED_LEN_SHIFT)
#define RSTR_EMBEDDABLE_P(len) ((len) <= RSTRING_EMBED_LEN_MAX)
#define RSTR_PTR(s) ((RSTR_EMBED_P(s)) ? RSTR_EMBED_PTR(s) : (s)->as.heap.ptr)
#define RSTR_LEN(s) ((RSTR_EMBED_P(s)) ? RSTR_EMBED_LEN(s) : (s)->as.heap.len)
#define RSTR_CAPA(s) (RSTR_EMBED_P(s) ? RSTRING_EMBED_LEN_MAX : (s)->as.heap.aux.capa)
#define RSTR_SHARED_P(s) ((s)->flags & MRB_STR_SHARED)
#define RSTR_FSHARED_P(s) ((s)->flags & MRB_STR_FSHARED)
#define RSTR_NOFREE_P(s) ((s)->flags & MRB_STR_NOFREE)
#ifdef MRB_UTF8_STRING
# define RSTR_SINGLE_BYTE_P(s) ((s)->flags & MRB_STR_SINGLE_BYTE)
# define RSTR_SET_SINGLE_BYTE_FLAG(s) ((s)->flags |= MRB_STR_SINGLE_BYTE)
# define RSTR_UNSET_SINGLE_BYTE_FLAG(s) ((s)->flags &= ~MRB_STR_SINGLE_BYTE)
# define RSTR_WRITE_SINGLE_BYTE_FLAG(s, v) (RSTR_UNSET_SINGLE_BYTE_FLAG(s), (s)->flags |= v)
# define RSTR_COPY_SINGLE_BYTE_FLAG(dst, src) RSTR_WRITE_SINGLE_BYTE_FLAG(dst, RSTR_SINGLE_BYTE_P(src))
#else
# define RSTR_SINGLE_BYTE_P(s) TRUE
# define RSTR_SET_SINGLE_BYTE_FLAG(s) (void)0
# define RSTR_UNSET_SINGLE_BYTE_FLAG(s) (void)0
# define RSTR_WRITE_SINGLE_BYTE_FLAG(s, v) (void)0
# define RSTR_COPY_SINGLE_BYTE_FLAG(dst, src) (void)0
#endif
#define RSTR_SET_ASCII_FLAG(s) RSTR_SET_SINGLE_BYTE_FLAG(s)
#define RSTR_BINARY_P(s) ((s)->flags & MRB_STR_BINARY)
/**
* Returns a pointer from a Ruby string
*/
#define mrb_str_ptr(s) ((struct RString*)(mrb_ptr(s)))
#define RSTRING(s) mrb_str_ptr(s)
#define RSTRING_PTR(s) RSTR_PTR(RSTRING(s))
#define RSTRING_EMBED_LEN(s) RSTR_EMBED_LEN(RSTRING(s))
#define RSTRING_LEN(s) RSTR_LEN(RSTRING(s))
#define RSTRING_CAPA(s) RSTR_CAPA(RSTRING(s))
#define RSTRING_END(s) (RSTRING_PTR(s) + RSTRING_LEN(s))
#define RSTRING_CSTR(mrb,s) mrb_string_cstr(mrb, s)
MRB_API void mrb_str_modify(mrb_state *mrb, struct RString *s);
/* mrb_str_modify() with keeping ASCII flag if set */
MRB_API void mrb_str_modify_keep_ascii(mrb_state *mrb, struct RString *s);
/**
* Finds the index of a substring in a string
*/
MRB_API mrb_int mrb_str_index(mrb_state *mrb, mrb_value str, const char *p, mrb_int len, mrb_int offset);
#define mrb_str_index_lit(mrb, str, lit, off) mrb_str_index(mrb, str, lit, mrb_strlen_lit(lit), off);
/**
* Appends self to other. Returns self as a concatenated string.
*
*
* Example:
*
* int
* main(int argc,
* char **argv)
* {
* // Variable declarations.
* mrb_value str1;
* mrb_value str2;
*
* mrb_state *mrb = mrb_open();
* if (!mrb)
* {
* // handle error
* }
*
* // Creates new Ruby strings.
* str1 = mrb_str_new_lit(mrb, "abc");
* str2 = mrb_str_new_lit(mrb, "def");
*
* // Concatenates str2 to str1.
* mrb_str_concat(mrb, str1, str2);
*
* // Prints new Concatenated Ruby string.
* mrb_p(mrb, str1);
*
* mrb_close(mrb);
* return 0;
* }
*
* Result:
*
* => "abcdef"
*
* @param mrb The current mruby state.
* @param self String to concatenate.
* @param other String to append to self.
* @return [mrb_value] Returns a new String appending other to self.
*/
MRB_API void mrb_str_concat(mrb_state *mrb, mrb_value self, mrb_value other);
/**
* Adds two strings together.
*
*
* Example:
*
* int
* main(int argc,
* char **argv)
* {
* // Variable declarations.
* mrb_value a;
* mrb_value b;
* mrb_value c;
*
* mrb_state *mrb = mrb_open();
* if (!mrb)
* {
* // handle error
* }
*
* // Creates two Ruby strings from the passed in C strings.
* a = mrb_str_new_lit(mrb, "abc");
* b = mrb_str_new_lit(mrb, "def");
*
* // Prints both C strings.
* mrb_p(mrb, a);
* mrb_p(mrb, b);
*
* // Concatenates both Ruby strings.
* c = mrb_str_plus(mrb, a, b);
*
* // Prints new Concatenated Ruby string.
* mrb_p(mrb, c);
*
* mrb_close(mrb);
* return 0;
* }
*
*
* Result:
*
* => "abc" # First string
* => "def" # Second string
* => "abcdef" # First & Second concatenated.
*
* @param mrb The current mruby state.
* @param a First string to concatenate.
* @param b Second string to concatenate.
* @return [mrb_value] Returns a new String containing a concatenated to b.
*/
MRB_API mrb_value mrb_str_plus(mrb_state *mrb, mrb_value a, mrb_value b);
/**
* Converts pointer into a Ruby string.
*
* @param mrb The current mruby state.
* @param p The pointer to convert to Ruby string.
* @return [mrb_value] Returns a new Ruby String.
*/
MRB_API mrb_value mrb_ptr_to_str(mrb_state *mrb, void *p);
/**
* Returns an object as a Ruby string.
*
* @param mrb The current mruby state.
* @param obj An object to return as a Ruby string.
* @return [mrb_value] An object as a Ruby string.
*/
MRB_API mrb_value mrb_obj_as_string(mrb_state *mrb, mrb_value obj);
/**
* Resizes the string's length. Returns the amount of characters
* in the specified by len.
*
* Example:
*
* int
* main(int argc,
* char **argv)
* {
* // Variable declaration.
* mrb_value str;
*
* mrb_state *mrb = mrb_open();
* if (!mrb)
* {
* // handle error
* }
* // Creates a new string.
* str = mrb_str_new_lit(mrb, "Hello, world!");
* // Returns 5 characters of
* mrb_str_resize(mrb, str, 5);
* mrb_p(mrb, str);
*
* mrb_close(mrb);
* return 0;
* }
*
* Result:
*
* => "Hello"
*
* @param mrb The current mruby state.
* @param str The Ruby string to resize.
* @param len The length.
* @return [mrb_value] An object as a Ruby string.
*/
MRB_API mrb_value mrb_str_resize(mrb_state *mrb, mrb_value str, mrb_int len);
/**
* Returns a sub string.
*
* Example:
*
* int
* main(int argc,
* char const **argv)
* {
* // Variable declarations.
* mrb_value str1;
* mrb_value str2;
*
* mrb_state *mrb = mrb_open();
* if (!mrb)
* {
* // handle error
* }
* // Creates new string.
* str1 = mrb_str_new_lit(mrb, "Hello, world!");
* // Returns a sub-string within the range of 0..2
* str2 = mrb_str_substr(mrb, str1, 0, 2);
*
* // Prints sub-string.
* mrb_p(mrb, str2);
*
* mrb_close(mrb);
* return 0;
* }
*
* Result:
*
* => "He"
*
* @param mrb The current mruby state.
* @param str Ruby string.
* @param beg The beginning point of the sub-string.
* @param len The end point of the sub-string.
* @return [mrb_value] An object as a Ruby sub-string.
*/
MRB_API mrb_value mrb_str_substr(mrb_state *mrb, mrb_value str, mrb_int beg, mrb_int len);
MRB_API mrb_value mrb_str_new_capa(mrb_state *mrb, mrb_int capa);
#define mrb_str_buf_new(mrb, capa) mrb_str_new_capa(mrb, (capa))
/* NULL terminated C string from mrb_value */
MRB_API const char *mrb_string_cstr(mrb_state *mrb, mrb_value str);
/* NULL terminated C string from mrb_value; `str` will be updated */
MRB_API const char *mrb_string_value_cstr(mrb_state *mrb, mrb_value *str);
/* obsolete: use RSTRING_PTR() */
#define mrb_string_value_ptr(mrb, str) RSTRING_PTR(str)
/* obsolete: use RSTRING_LEN() */
#define mrb_string_value_len(mrb, str) RSTRING_LEN(str)
/* obsolete: substituted by a macro; shall be removed */
#define mrb_str_strlen(mrb, s) strlen(RSTR_PTR(s))
/**
* Duplicates a string object.
*
*
* @param mrb The current mruby state.
* @param str Ruby string.
* @return [mrb_value] Duplicated Ruby string.
*/
MRB_API mrb_value mrb_str_dup(mrb_state *mrb, mrb_value str);
/**
* Returns a symbol from a passed in Ruby string.
*
* @param mrb The current mruby state.
* @param self Ruby string.
* @return [mrb_value] A symbol.
*/
MRB_API mrb_value mrb_str_intern(mrb_state *mrb, mrb_value self);
MRB_API mrb_value mrb_str_to_integer(mrb_state *mrb, mrb_value str, mrb_int base, mrb_bool badcheck);
/* obsolete: use mrb_str_to_integer() */
#define mrb_str_to_inum(mrb, str, base, badcheck) mrb_str_to_integer(mrb, str, base, badcheck)
MRB_API double mrb_str_to_dbl(mrb_state *mrb, mrb_value str, mrb_bool badcheck);
/**
* Returns true if the strings match and false if the strings don't match.
*
* @param mrb The current mruby state.
* @param str1 Ruby string to compare.
* @param str2 Ruby string to compare.
* @return [mrb_value] boolean value.
*/
MRB_API mrb_bool mrb_str_equal(mrb_state *mrb, mrb_value str1, mrb_value str2);
/**
* Returns a concatenated string comprised of a Ruby string and a C string.
*
* @param mrb The current mruby state.
* @param str Ruby string.
* @param ptr A C string.
* @param len length of C string.
* @return [mrb_value] A Ruby string.
* @see mrb_str_cat_cstr
*/
MRB_API mrb_value mrb_str_cat(mrb_state *mrb, mrb_value str, const char *ptr, size_t len);
/**
* Returns a concatenated string comprised of a Ruby string and a C string.
*
* @param mrb The current mruby state.
* @param str Ruby string.
* @param ptr A C string.
* @return [mrb_value] A Ruby string.
* @see mrb_str_cat
*/
MRB_API mrb_value mrb_str_cat_cstr(mrb_state *mrb, mrb_value str, const char *ptr);
MRB_API mrb_value mrb_str_cat_str(mrb_state *mrb, mrb_value str, mrb_value str2);
#define mrb_str_cat_lit(mrb, str, lit) mrb_str_cat(mrb, str, lit, mrb_strlen_lit(lit))
/**
* Adds str2 to the end of str1.
*/
MRB_API mrb_value mrb_str_append(mrb_state *mrb, mrb_value str, mrb_value str2);
/**
* Returns 0 if both Ruby strings are equal. Returns a value < 0 if Ruby str1 is less than Ruby str2. Returns a value > 0 if Ruby str2 is greater than Ruby str1.
*/
MRB_API int mrb_str_cmp(mrb_state *mrb, mrb_value str1, mrb_value str2);
/**
* Returns a newly allocated C string from a Ruby string.
* This is an utility function to pass a Ruby string to C library functions.
*
* - Returned string does not contain any NUL characters (but terminator).
* - It raises an ArgumentError exception if Ruby string contains
* NUL characters.
* - Returned string will be freed automatically on next GC.
* - Caller can modify returned string without affecting Ruby string
* (e.g. it can be used for mkstemp(3)).
*
* @param mrb The current mruby state.
* @param str Ruby string. Must be an instance of String.
* @return [char *] A newly allocated C string.
*/
MRB_API char *mrb_str_to_cstr(mrb_state *mrb, mrb_value str);
/* For backward compatibility */
#define mrb_str_cat2(mrb, str, ptr) mrb_str_cat_cstr(mrb, str, ptr)
#define mrb_str_buf_cat(mrb, str, ptr, len) mrb_str_cat(mrb, str, ptr, len)
#define mrb_str_buf_append(mrb, str, str2) mrb_str_cat_str(mrb, str, str2)
MRB_END_DECL
#endif /* MRUBY_STRING_H */