1: /* Character handling in C locale.
2:
3: Copyright 2000-2003, 2006 Free Software Foundation, Inc.
4:
5: This program is free software; you can redistribute it and/or modify
6: it under the terms of the GNU General Public License as published by
7: the Free Software Foundation; either version 3 of the License, or
8: (at your option) any later version.
9:
10: This program is distributed in the hope that it will be useful,
11: but WITHOUT ANY WARRANTY; without even the implied warranty of
12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13: GNU General Public License for more details.
14:
15: You should have received a copy of the GNU General Public License
16: along with this program; if not, write to the Free Software Foundation,
17: Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
18:
19: #include <config.h>
20:
21: /* Specification. */
22: #define NO_C_CTYPE_MACROS
23: #include "c-ctype.h"
24:
25: /* The function isascii is not locale dependent. Its use in EBCDIC is
26: questionable. */
27: bool
28: c_isascii (int c)
29: {
30: return (c >= 0x00 && c <= 0x7f);
31: }
32:
33: bool
34: c_isalnum (int c)
35: {
36: #if C_CTYPE_CONSECUTIVE_DIGITS \
37: && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
38: #if C_CTYPE_ASCII
39: return ((c >= '0' && c <= '9')
40: || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z'));
41: #else
42: return ((c >= '0' && c <= '9')
43: || (c >= 'A' && c <= 'Z')
44: || (c >= 'a' && c <= 'z'));
45: #endif
46: #else
47: switch (c)
48: {
49: case '0': case '1': case '2': case '3': case '4': case '5':
50: case '6': case '7': case '8': case '9':
51: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
52: case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
53: case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
54: case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
55: case 'Y': case 'Z':
56: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
57: case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
58: case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
59: case 's': case 't': case 'u': case 'v': case 'w': case 'x':
60: case 'y': case 'z':
61: return 1;
62: default:
63: return 0;
64: }
65: #endif
66: }
67:
68: bool
69: c_isalpha (int c)
70: {
71: #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
72: #if C_CTYPE_ASCII
73: return ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z');
74: #else
75: return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'));
76: #endif
77: #else
78: switch (c)
79: {
80: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
81: case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
82: case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
83: case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
84: case 'Y': case 'Z':
85: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
86: case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
87: case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
88: case 's': case 't': case 'u': case 'v': case 'w': case 'x':
89: case 'y': case 'z':
90: return 1;
91: default:
92: return 0;
93: }
94: #endif
95: }
96:
97: bool
98: c_isblank (int c)
99: {
100: return (c == ' ' || c == '\t');
101: }
102:
103: bool
104: c_iscntrl (int c)
105: {
106: #if C_CTYPE_ASCII
107: return ((c & ~0x1f) == 0 || c == 0x7f);
108: #else
109: switch (c)
110: {
111: case ' ': case '!': case '"': case '#': case '$': case '%':
112: case '&': case '\'': case '(': case ')': case '*': case '+':
113: case ',': case '-': case '.': case '/':
114: case '0': case '1': case '2': case '3': case '4': case '5':
115: case '6': case '7': case '8': case '9':
116: case ':': case ';': case '<': case '=': case '>': case '?':
117: case '@':
118: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
119: case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
120: case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
121: case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
122: case 'Y': case 'Z':
123: case '[': case '\\': case ']': case '^': case '_': case '`':
124: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
125: case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
126: case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
127: case 's': case 't': case 'u': case 'v': case 'w': case 'x':
128: case 'y': case 'z':
129: case '{': case '|': case '}': case '~':
130: return 0;
131: default:
132: return 1;
133: }
134: #endif
135: }
136:
137: bool
138: c_isdigit (int c)
139: {
140: #if C_CTYPE_CONSECUTIVE_DIGITS
141: return (c >= '0' && c <= '9');
142: #else
143: switch (c)
144: {
145: case '0': case '1': case '2': case '3': case '4': case '5':
146: case '6': case '7': case '8': case '9':
147: return 1;
148: default:
149: return 0;
150: }
151: #endif
152: }
153:
154: bool
155: c_islower (int c)
156: {
157: #if C_CTYPE_CONSECUTIVE_LOWERCASE
158: return (c >= 'a' && c <= 'z');
159: #else
160: switch (c)
161: {
162: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
163: case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
164: case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
165: case 's': case 't': case 'u': case 'v': case 'w': case 'x':
166: case 'y': case 'z':
167: return 1;
168: default:
169: return 0;
170: }
171: #endif
172: }
173:
174: bool
175: c_isgraph (int c)
176: {
177: #if C_CTYPE_ASCII
178: return (c >= '!' && c <= '~');
179: #else
180: switch (c)
181: {
182: case '!': case '"': case '#': case '$': case '%': case '&':
183: case '\'': case '(': case ')': case '*': case '+': case ',':
184: case '-': case '.': case '/':
185: case '0': case '1': case '2': case '3': case '4': case '5':
186: case '6': case '7': case '8': case '9':
187: case ':': case ';': case '<': case '=': case '>': case '?':
188: case '@':
189: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
190: case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
191: case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
192: case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
193: case 'Y': case 'Z':
194: case '[': case '\\': case ']': case '^': case '_': case '`':
195: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
196: case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
197: case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
198: case 's': case 't': case 'u': case 'v': case 'w': case 'x':
199: case 'y': case 'z':
200: case '{': case '|': case '}': case '~':
201: return 1;
202: default:
203: return 0;
204: }
205: #endif
206: }
207:
208: bool
209: c_isprint (int c)
210: {
211: #if C_CTYPE_ASCII
212: return (c >= ' ' && c <= '~');
213: #else
214: switch (c)
215: {
216: case ' ': case '!': case '"': case '#': case '$': case '%':
217: case '&': case '\'': case '(': case ')': case '*': case '+':
218: case ',': case '-': case '.': case '/':
219: case '0': case '1': case '2': case '3': case '4': case '5':
220: case '6': case '7': case '8': case '9':
221: case ':': case ';': case '<': case '=': case '>': case '?':
222: case '@':
223: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
224: case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
225: case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
226: case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
227: case 'Y': case 'Z':
228: case '[': case '\\': case ']': case '^': case '_': case '`':
229: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
230: case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
231: case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
232: case 's': case 't': case 'u': case 'v': case 'w': case 'x':
233: case 'y': case 'z':
234: case '{': case '|': case '}': case '~':
235: return 1;
236: default:
237: return 0;
238: }
239: #endif
240: }
241:
242: bool
243: c_ispunct (int c)
244: {
245: #if C_CTYPE_ASCII
246: return ((c >= '!' && c <= '~')
247: && !((c >= '0' && c <= '9')
248: || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z')));
249: #else
250: switch (c)
251: {
252: case '!': case '"': case '#': case '$': case '%': case '&':
253: case '\'': case '(': case ')': case '*': case '+': case ',':
254: case '-': case '.': case '/':
255: case ':': case ';': case '<': case '=': case '>': case '?':
256: case '@':
257: case '[': case '\\': case ']': case '^': case '_': case '`':
258: case '{': case '|': case '}': case '~':
259: return 1;
260: default:
261: return 0;
262: }
263: #endif
264: }
265:
266: bool
267: c_isspace (int c)
268: {
269: return (c == ' ' || c == '\t'
270: || c == '\n' || c == '\v' || c == '\f' || c == '\r');
271: }
272:
273: bool
274: c_isupper (int c)
275: {
276: #if C_CTYPE_CONSECUTIVE_UPPERCASE
277: return (c >= 'A' && c <= 'Z');
278: #else
279: switch (c)
280: {
281: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
282: case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
283: case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
284: case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
285: case 'Y': case 'Z':
286: return 1;
287: default:
288: return 0;
289: }
290: #endif
291: }
292:
293: bool
294: c_isxdigit (int c)
295: {
296: #if C_CTYPE_CONSECUTIVE_DIGITS \
297: && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
298: #if C_CTYPE_ASCII
299: return ((c >= '0' && c <= '9')
300: || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'F'));
301: #else
302: return ((c >= '0' && c <= '9')
303: || (c >= 'A' && c <= 'F')
304: || (c >= 'a' && c <= 'f'));
305: #endif
306: #else
307: switch (c)
308: {
309: case '0': case '1': case '2': case '3': case '4': case '5':
310: case '6': case '7': case '8': case '9':
311: case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
312: case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
313: return 1;
314: default:
315: return 0;
316: }
317: #endif
318: }
319:
320: int
321: c_tolower (int c)
322: {
323: #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
324: return (c >= 'A' && c <= 'Z' ? c - 'A' + 'a' : c);
325: #else
326: switch (c)
327: {
328: case 'A': return 'a';
329: case 'B': return 'b';
330: case 'C': return 'c';
331: case 'D': return 'd';
332: case 'E': return 'e';
333: case 'F': return 'f';
334: case 'G': return 'g';
335: case 'H': return 'h';
336: case 'I': return 'i';
337: case 'J': return 'j';
338: case 'K': return 'k';
339: case 'L': return 'l';
340: case 'M': return 'm';
341: case 'N': return 'n';
342: case 'O': return 'o';
343: case 'P': return 'p';
344: case 'Q': return 'q';
345: case 'R': return 'r';
346: case 'S': return 's';
347: case 'T': return 't';
348: case 'U': return 'u';
349: case 'V': return 'v';
350: case 'W': return 'w';
351: case 'X': return 'x';
352: case 'Y': return 'y';
353: case 'Z': return 'z';
354: default: return c;
355: }
356: #endif
357: }
358:
359: int
360: c_toupper (int c)
361: {
362: #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
363: return (c >= 'a' && c <= 'z' ? c - 'a' + 'A' : c);
364: #else
365: switch (c)
366: {
367: case 'a': return 'A';
368: case 'b': return 'B';
369: case 'c': return 'C';
370: case 'd': return 'D';
371: case 'e': return 'E';
372: case 'f': return 'F';
373: case 'g': return 'G';
374: case 'h': return 'H';
375: case 'i': return 'I';
376: case 'j': return 'J';
377: case 'k': return 'K';
378: case 'l': return 'L';
379: case 'm': return 'M';
380: case 'n': return 'N';
381: case 'o': return 'O';
382: case 'p': return 'P';
383: case 'q': return 'Q';
384: case 'r': return 'R';
385: case 's': return 'S';
386: case 't': return 'T';
387: case 'u': return 'U';
388: case 'v': return 'V';
389: case 'w': return 'W';
390: case 'x': return 'X';
391: case 'y': return 'Y';
392: case 'z': return 'Z';
393: default: return c;
394: }
395: #endif
396: }
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