asar coverage - build #71

src/asar/
File: src/asar/libstr.cpp
Date: 2024-01-18 08:02:13
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1 #include "asar.h"
2 #include "virtualfile.h"
3 #include "unicode.h"
4
5 #include "platform/file-helpers.h"
6
7 #define typed_malloc(type, count) (type*)malloc(sizeof(type)*(count))
8 #define typed_realloc(type, ptr, count) (type*)realloc(ptr, sizeof(type)*(count))
9
10
11 // Detects if str starts with a UTF-8 byte order mark.
12 // If so, throws a warning, then returns the number of bytes we should skip ahead in the string.
13 744 size_t check_bom(const char* str)
14 {
15 // RPG Hacker: We could also check for BoMs of incompatible encodings here (like UTF-16)
16 // and throw errors, but not sure if that's worth adding. Asar never supported any wide
17 // encodings to begin with, so it's unreasonable to assume that any UTF-16 patches currently
18 // exist for it. As for future patches, those should be caught by the "must be UTF-8" checks
19 // I have already implemented further below.
20 // I think UTF-8 + BoM is the only case that could lead to confusion if we didn't handle it,
21 // so that's why I have added this.
22
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 744 if (str[0u] == '\xEF' && str[1u] == '\xBB' && str[2u] == '\xBF')
23 {
24 2 asar_throw_warning(0, warning_id_byte_order_mark_utf8);
25 2 return 3u;
26 }
27
28 371 return 0u;
29 }
30
31
32 280 char * readfile(const char * fname, const char * basepath)
33 {
34 280 virtual_file_handle myfile = filesystem->open_file(fname, basepath);
35
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 280 if (myfile == INVALID_VIRTUAL_FILE_HANDLE) return nullptr;
36 274 size_t datalen = filesystem->get_file_size(myfile);
37 274 char * data= typed_malloc(char, datalen+1);
38 274 data[filesystem->read_file(myfile, data, 0u, datalen)] = 0;
39 274 filesystem->close_file(myfile);
40
41
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 274 if (!is_valid_utf8(data))
42 {
43 2 free(data);
44 2 asar_throw_error(0, error_type_block, error_id_invalid_utf8);
45 }
46
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 272 if(check_bom(data)){
47 2 data[0] = ' ';
48 2 data[1] = ' ';
49 2 data[2] = ' ';
50 }
51 136 return data;
52 }
53
54 // RPG Hacker: like readfile(), but doesn't use virtual file system
55 // and instead read our file directly.
56 472 char * readfilenative(const char * fname)
57 {
58 472 FileHandleType myfile = open_file(fname, FileOpenMode_Read);
59
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 472 if (myfile == InvalidFileHandle) return nullptr;
60 472 size_t datalen = (size_t)get_file_size(myfile);
61 472 char * data = typed_malloc(char, datalen + 1);
62 472 data[read_file(myfile, data, datalen)] = 0;
63 472 close_file(myfile);
64
65
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 472 if (!is_valid_utf8(data)) asar_throw_error(0, error_type_block, error_id_invalid_utf8);
66
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 472 if(check_bom(data)){
67 ✗ data[0] = ' ';
68 ✗ data[1] = ' ';
69 ✗ data[2] = ' ';
70 }
71 236 return data;
72 }
73
74 246 bool readfile(const char * fname, const char * basepath, char ** data, int * len)
75 {
76 246 virtual_file_handle myfile = filesystem->open_file(fname, basepath);
77
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 246 if (!myfile) return false;
78 234 size_t datalen = filesystem->get_file_size(myfile);
79 234 *data= typed_malloc(char, datalen);
80 234 *len = (int)filesystem->read_file(myfile, *data, 0, datalen);
81 234 filesystem->close_file(myfile);
82 234 return true;
83 }
84
85 #define isq(n) (((0x2227 ^ (0x0101 * (n))) - 0x0101UL) & ~(0x2227 ^ (0x0101 * (n))) & 0x8080UL)
86 #define isqp(n) (((0x22272829 ^ (0x01010101 * (n))) - 0x01010101UL) & ~(0x22272829 ^ (0x01010101 * (n))) & 0x80808080UL)
87
88 // RPG Hacker: Only index this with ASCII characters.
89 // Anything else doesn't make sense, anyways.
90 const bool qparlut[128] = {
91 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
92 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
93 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
94 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
96 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
97 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
98 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
99 };
100
101 //this will leave the last char found as the one pointed at
102 64573 inline bool skip_quote(char *&str)
103 {
104
105
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 64573 if(*str == '"') str = strchr(str + 1, '"');
106
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 58806 else if(*str == '\'')
107 {
108 int codepoint;
109
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 834 str += utf8_val(&codepoint, str + 1) + 1;
110
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 834 if(*str != '\'') return false;
111 }
112 64573 return str;
113 }
114
115 //eat 1 char or quote/par
116 11280 inline bool skip_par(char *&str)
117 {
118 5640 int par = 0;
119
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 11280 if(*str != '\'' && *str != '"' && *str != '(' && *str != ')')
120 {
121 9054 str++;
122 9054 return true;
123 }
124 while(true)
125 {
126 13482 char *t = str;
127
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 13482 if(*str == '"') t = strchr(t + 1, '"');
128
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 13140 else if(*str == '\'')
129 {
130 int codepoint;
131 ✗ t += utf8_val(&codepoint, t + 1) + 1;
132 ✗ if(*t != '\'') return false;
133 }
134
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 13140 else if(*t == '(')
135 {
136 2040 par++;
137 }
138
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 11100 else if(*t == ')')
139 {
140 2040 par--;
141
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 2040 if(par < 0) return false;
142 }
143
144 13482 str = t + 1;
145
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 13482 if(!*str || !par) return par == 0 ? true : false;
146 5628 }
147 }
148
149 //instr should not be duplicate chars. Instr should also not be 1 char
150
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 46063 string& string::qreplace(const char * instr, const char * outstr)
151 {
152 24137 string& thisstring =*this;
153
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 46063 if (!strstr(thisstring, instr)) return thisstring;
154 30 int inlen = strlen(instr);
155 30 string out;
156
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 492 for (int i=0;thisstring[i];)
157 {
158
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 462 if (!strncmp((const char*)thisstring +i, instr, inlen))
159 {
160
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 30 out+=outstr;
161 30 i+=inlen;
162 }
163 // randomdude999: prevent appending the null terminator to the output
164
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 432 else if(!isq(thisstring[i])) out+= thisstring[i++];
165 else
166 {
167 ✗ char *start = raw() + i;
168 ✗ char *end = start;
169 ✗ if(!skip_quote(end)) return thisstring;
170 ✗ out.append(raw(), i, end - start + i + 1);
171 ✗ i += end - start + 1;
172
173 }
174 }
175
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 15 thisstring =out;
176 30 return thisstring;
177 30 }
178
179 49595 string& string::qnormalize()
180 {
181 25903 string& thisstring =*this;
182 49595 string out;
183 25903 char *startstr = thisstring.raw();
184 25903 char *str = startstr;
185
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 104129 while(str = strpbrk(str, "'\" \t,\r"))
186 {
187
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 54570 if(is_space(*str))
188 {
189
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 42005 if(str[0] == ' ' && !is_space(str[1]))
190 {
191 41945 str++;
192 41945 continue;
193 }
194
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 60 out.append(startstr, 0, str - startstr);
195
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 60 out += ' ';
196
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 252 while(is_space(*str)) str++;
197 30 startstr = str;
198
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 12565 }else if(*str == ',')
199 {
200 6106 str++;
201
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 6106 if(is_space(*str))
202 {
203
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 1716 out.append(startstr, 0, str - startstr);
204
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 3462 while(is_space(*str)) str++;
205 858 startstr = str;
206 }
207 }
208 else
209 {
210
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 6459 str = strchr(str + 1, *str); //confirm quotes has already been run, so this should be okay
211
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 6459 if(!str) return thisstring;
212 6423 str++;
213 }
214 }
215
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 49559 if(startstr != thisstring.raw())
216 {
217
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 1398 out.append(startstr, 0, strlen(startstr)); //the remaining
218
219
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 699 thisstring = out;
220 }
221 25885 return thisstring;
222 49595 }
223
224 21318 bool confirmquotes(const char * str)
225 {
226
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 22330 while(*str)
227 {
228 7590 char *dquote = strchr((char *)str, '"');
229 7590 char *squote = strchr((char *)str, '\'');
230
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 15180 if(dquote || squote)
231 {
232
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 1022 if(dquote && (dquote < squote || !squote))
233 {
234
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 820 dquote = strchr(dquote+1, '"');
235
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 816 if(dquote) str = dquote+1;
236 4 else return false;
237 }
238 else
239 {
240 int codepoint;
241
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 202 squote += utf8_val(&codepoint, squote + 1) + 1;
242
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 202 if(*squote == '\'') str = squote+1;
243 2 else return false;
244 }
245 506 }
246 else
247 {
248 7079 return true;
249 }
250 }
251 3575 return true;
252 }
253
254 734 bool confirmqpar(const char * str)
255 {
256 //todo fully optimize
257 367 int par = 0;
258
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 9806 while((unsigned char)*str >= 128 || !qparlut[*str]) str++;
259
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 2532 while(*str)
260 {
261
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 1798 if(*str == '"')
262 {
263
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 366 str = strchr(str + 1, '"');
264
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 366 if(!str++) return false;
265 }
266
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 1432 else if(*str == '\'')
267 {
268 int codepoint;
269
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 24 str += utf8_val(&codepoint, str + 1) + 1;
270
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 24 if(*str == '\'') str++;
271 ✗ else return false;
272 }
273 else
274 {
275 1408 par += 1 - ((*str++ - '(') << 1);
276
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 1408 if(par < 0) return false;
277 }
278
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 4550 while((unsigned char)*str >= 128 || !qparlut[*str]) str++;
279 }
280 734 return !par;
281 }
282
283 53184 char ** split(char * str, char key, int * len)
284 {
285
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 53184 char *thisentry=strchr(str, key);
286
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 53184 if (!thisentry)
287 {
288 28652 char ** out= typed_malloc(char*, 2);
289 28652 out[0]=str;
290 28652 out[1]=nullptr;
291
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 28652 if (len) *len=1;
292 28652 return out;
293 }
294 12266 int count=15; //makes the default alloc 8 elements, sounds fair.
295 24532 char ** outdata= typed_malloc(char*, (size_t)count+1);
296
297 12266 int newcount=0;
298 24532 outdata[newcount++]=str;
299 do{
300 41914 *thisentry = 0;
301 41914 thisentry++;
302 41914 outdata[newcount++]=thisentry;
303
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 41914 if(newcount >= count)
304 {
305 270 count *= 2;
306 270 outdata = typed_realloc(char *, outdata, count);
307 }
308
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 41914 }while((thisentry = strchr(thisentry, key)));
309
310 24532 outdata[newcount]= nullptr;
311
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 24532 if (len) *len=newcount;
312 12266 return outdata;
313 }
314
315
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 57109 char ** qsplit(char * str, char key, int * len)
316 {
317
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 57109 if (!strchr(str, '"') && !strchr(str, '\'')) return split(str, key, len);
318
319 4019 int count=15;
320 5827 char ** outdata= typed_malloc(char*, (size_t)count+1);
321 4019 int newcount=0;
322 5827 char * thisentry=str;
323 5827 outdata[newcount++]=thisentry;
324
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 57093 while (*thisentry) /*todo fix*/
325 {
326
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 51266 if (*thisentry == key)
327 {
328 6091 *thisentry=0;
329 6091 thisentry++;
330 6091 outdata[newcount++]=thisentry;
331
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 6091 if(newcount >= count)
332 {
333 ✗ count *= 2;
334 ✗ outdata = typed_realloc(char *, outdata, count);
335 }
336 }
337
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 45175 else if(skip_quote(thisentry)) thisentry++;
338 ✗ else return nullptr;
339 }
340 5827 outdata[newcount]= nullptr;
341
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 5827 if (len) *len=newcount;
342 4019 return outdata;
343 }
344
345
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 46063 char ** qsplitstr(char * str, const char * key, int * len)
346 {
347 //check if the str is found first
348
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 46063 if (!strstr(str, key))
349 {
350 45667 char ** out= typed_malloc(char*, 2);
351 45667 out[0]=str;
352 45667 out[1]=nullptr;
353
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 45667 if (len) *len=1;
354 45667 return out;
355 }
356
357 396 int keylen=(int)strlen(key);
358 198 int count=15;
359 396 char ** outdata= typed_malloc(char*, (size_t)count+1);
360 198 int newcount=0;
361 396 char * thisentry=str;
362 396 outdata[newcount++]=thisentry;
363
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 21522 while (*thisentry) /*todo fix*/
364 {
365
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 21126 if (!strncmp(thisentry, key, (size_t)keylen))
366 {
367 1728 *thisentry=0;
368 1728 thisentry+=keylen;
369 1728 outdata[newcount++]=thisentry;
370
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 1728 if(newcount >= count)
371 {
372 ✗ count *= 2;
373 ✗ outdata = typed_realloc(char *, outdata, count);
374 }
375 }
376
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 19398 else if(skip_quote(thisentry)) thisentry++;
377 ✗ else return nullptr;
378 }
379 396 outdata[newcount]= nullptr;
380
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 396 if (len) *len=newcount;
381 198 return outdata;
382 }
383
384 //this function is most commonly called in cases where additional chars are very likely
385
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 11244 char ** qpsplit(char * str, char key, int * len)
386 {
387
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 11244 if (!strchr(str, '(') && !strchr(str, ')')) return qsplit(str, key, len);
388 963 int count=7;
389 1926 char ** outdata= typed_malloc(char*, (size_t)count+1);
390
391 963 int newcount=0;
392 1926 char * thisentry=str;
393 1926 outdata[newcount++]=thisentry;
394
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 13620 while (*thisentry)
395 {
396 //skippar(*thisentry, thisentry++, return nullptr;)
397
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 11694 if (*thisentry == key)
398 {
399 894 *thisentry=0;
400 894 thisentry++;
401 894 outdata[newcount++]=thisentry;
402
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 894 if(newcount >= count)
403 {
404 12 count *= 2;
405 12 outdata = typed_realloc(char *, outdata, count);
406 }
407 }
408
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 10800 else if(!skip_par(thisentry)) return nullptr;
409 }
410 1926 outdata[newcount]= nullptr;
411
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 1926 if (len) *len=newcount;
412 963 return outdata;
413 }
414
415
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 840 string &itrim(string &input, const char * left, const char * right)
416 {
417 420 bool nukeright=true;
418 420 int totallen=input.length();
419 840 int rightlen=(int)strlen(right);
420
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 840 if (rightlen && rightlen<=totallen)
421 {
422 840 const char * rightend=right+rightlen;
423 840 const char * strend=input.data()+totallen;
424
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 2820 while (right!=rightend)
425 {
426 1980 rightend--;
427 1980 strend--;
428
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 1980 if (to_lower(*strend)!=to_lower(*rightend)) nukeright=false;
429 }
430
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 840 if (nukeright)
431 {
432 840 totallen-=rightlen;
433 420 input.truncate(totallen);
434 }
435 }
436 420 bool nukeleft=true;
437 840 int leftlen = strlen(left);
438
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 840 if(leftlen == 1 && input.data()[0] == left[0])
439 {
440
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 204 return input = string(input.data()+1, (input.length()-1));
441 }
442 else
443 {
444
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 636 for (int i = 0; i < leftlen; i++)
445 {
446 ✗ if (to_lower(input.data()[i])!=to_lower(left[i])) nukeleft=false;
447 }
448
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 954 if (nukeleft) input = string(input.data()+leftlen, (input.length()-leftlen));
449 }
450 318 return input;
451 }
452
453 ✗ char* strqpchr(char* str, char key)
454 {
455 ✗ while (*str)
456 {
457 ✗ if (*str == key) return str;
458 ✗ else if(!skip_par(str)) return nullptr;
459 }
460 ✗ return nullptr;
461 }
462
463 126 char* strqpstr(char* str, const char* key)
464 {
465 126 size_t keylen = strlen(key);
466
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 606 while (*str)
467 {
468
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 600 if (!strncmp(str, key, keylen)) return str;
469
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 480 else if(!skip_par(str)) return nullptr;
470 }
471 3 return nullptr;
472 }
473
474 extern const uint8_t char_props[256] = {
475 //x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF
476 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x80,0x00,0x00, // 0x
477 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // 1x
478 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // 2x !"#$%&'()*+,-./
479 0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x00,0x00,0x00,0x00,0x00,0x00, // 3x 0123456789:;<=>?
480 0x00,0x23,0x23,0x23,0x23,0x23,0x23,0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22, // 4x @ABCDEFGHIJKLMNO
481 0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x00,0x00,0x00,0x00,0x08, // 5x PQRSTUVWXYZ[\]^_
482 0x00,0x25,0x25,0x25,0x25,0x25,0x25,0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, // 6x `abcdefghijklmno
483 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x00,0x00,0x00,0x00,0x00, // 7x pqrstuvwxyz{|}~
484 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // 8x
485 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // 9x
486 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // Ax
487 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // Bx
488 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // Cx
489 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // Dx
490 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // Ex
491 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // Fx
492 };
493