Annotation of mandoc/strings.c, Revision 1.33
1.33 ! kristaps 1: /* $Id: strings.c,v 1.32 2009/03/23 14:22:11 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
1.27 kristaps 19: #include <sys/types.h>
20:
1.1 kristaps 21: #include <assert.h>
22: #include <ctype.h>
23: #include <stdlib.h>
24: #include <stdio.h>
1.2 kristaps 25: #include <string.h>
1.1 kristaps 26:
1.32 kristaps 27: #include "libmdoc.h"
1.26 kristaps 28:
1.14 kristaps 29: /*
1.26 kristaps 30: * Various string-literal operations: converting scalars to and from
31: * strings, etc.
1.14 kristaps 32: */
33:
1.26 kristaps 34: struct mdoc_secname {
35: const char *name;
36: int flag;
37: #define MSECNAME_META (1 << 0)
38: };
39:
40: /* Section names corresponding to mdoc_sec. */
41:
42: static const struct mdoc_secname secnames[] = {
43: { "PROLOGUE", MSECNAME_META },
44: { "BODY", MSECNAME_META },
45: { "NAME", 0 },
46: { "LIBRARY", 0 },
47: { "SYNOPSIS", 0 },
48: { "DESCRIPTION", 0 },
49: { "IMPLEMENTATION NOTES", 0 },
50: { "RETURN VALUES", 0 },
51: { "ENVIRONMENT", 0 },
52: { "FILES", 0 },
53: { "EXAMPLES", 0 },
54: { "DIAGNOSTICS", 0 },
55: { "COMPATIBILITY", 0 },
56: { "ERRORS", 0 },
57: { "SEE ALSO", 0 },
58: { "STANDARDS", 0 },
59: { "HISTORY", 0 },
60: { "AUTHORS", 0 },
61: { "CAVEATS", 0 },
62: { "BUGS", 0 },
63: { NULL, 0 }
64: };
1.1 kristaps 65:
1.4 kristaps 66: #ifdef __linux__
67: extern char *strptime(const char *, const char *, struct tm *);
68: #endif
69:
1.16 kristaps 70:
71: size_t
72: mdoc_isescape(const char *p)
73: {
74: size_t c;
75:
76: if ('\\' != *p++)
77: return(0);
78:
79: switch (*p) {
80: case ('\\'):
81: /* FALLTHROUGH */
82: case ('\''):
83: /* FALLTHROUGH */
84: case ('`'):
85: /* FALLTHROUGH */
1.28 kristaps 86: case ('q'):
87: /* FALLTHROUGH */
1.16 kristaps 88: case ('-'):
89: /* FALLTHROUGH */
1.31 kristaps 90: case ('%'):
91: /* FALLTHROUGH */
1.33 ! kristaps 92: case ('0'):
! 93: /* FALLTHROUGH */
1.16 kristaps 94: case (' '):
95: /* FALLTHROUGH */
1.29 kristaps 96: case ('|'):
97: /* FALLTHROUGH */
1.17 kristaps 98: case ('&'):
99: /* FALLTHROUGH */
1.16 kristaps 100: case ('.'):
101: /* FALLTHROUGH */
1.30 kristaps 102: case (':'):
103: /* FALLTHROUGH */
1.16 kristaps 104: case ('e'):
105: return(2);
1.21 kristaps 106: case ('*'):
1.25 kristaps 107: if (0 == *++p || ! isgraph((u_char)*p))
1.21 kristaps 108: return(0);
109: switch (*p) {
110: case ('('):
1.25 kristaps 111: if (0 == *++p || ! isgraph((u_char)*p))
1.21 kristaps 112: return(0);
113: return(4);
1.24 kristaps 114: case ('['):
115: for (c = 3, p++; *p && ']' != *p; p++, c++)
1.25 kristaps 116: if ( ! isgraph((u_char)*p))
1.24 kristaps 117: break;
118: return(*p == ']' ? c : 0);
1.21 kristaps 119: default:
120: break;
121: }
122: return(3);
1.16 kristaps 123: case ('('):
1.25 kristaps 124: if (0 == *++p || ! isgraph((u_char)*p))
1.16 kristaps 125: return(0);
1.25 kristaps 126: if (0 == *++p || ! isgraph((u_char)*p))
1.16 kristaps 127: return(0);
128: return(4);
129: case ('['):
130: break;
131: default:
132: return(0);
133: }
134:
135: for (c = 3, p++; *p && ']' != *p; p++, c++)
1.25 kristaps 136: if ( ! isgraph((u_char)*p))
1.16 kristaps 137: break;
138:
139: return(*p == ']' ? c : 0);
140: }
141:
142:
1.1 kristaps 143: int
1.3 kristaps 144: mdoc_iscdelim(char p)
1.1 kristaps 145: {
146:
1.3 kristaps 147: switch (p) {
1.1 kristaps 148: case('.'):
149: /* FALLTHROUGH */
150: case(','):
151: /* FALLTHROUGH */
152: case(';'):
153: /* FALLTHROUGH */
154: case(':'):
155: /* FALLTHROUGH */
156: case('?'):
157: /* FALLTHROUGH */
158: case('!'):
159: /* FALLTHROUGH */
160: case('('):
161: /* FALLTHROUGH */
162: case(')'):
163: /* FALLTHROUGH */
164: case('['):
165: /* FALLTHROUGH */
166: case(']'):
167: /* FALLTHROUGH */
1.7 kristaps 168: case('{'):
169: /* FALLTHROUGH */
1.1 kristaps 170: case('}'):
171: return(1);
172: default:
173: break;
174: }
175:
176: return(0);
177: }
178:
1.2 kristaps 179:
1.3 kristaps 180: int
181: mdoc_isdelim(const char *p)
182: {
183:
184: if (0 == *p)
185: return(0);
186: if (0 != *(p + 1))
187: return(0);
188: return(mdoc_iscdelim(*p));
189: }
190:
191:
1.2 kristaps 192: enum mdoc_sec
1.9 kristaps 193: mdoc_atosec(const char *p)
1.2 kristaps 194: {
1.26 kristaps 195: const struct mdoc_secname *n;
196: int i;
1.2 kristaps 197:
1.26 kristaps 198: for (i = 0, n = secnames; n->name; n++, i++)
199: if ( ! (n->flag & MSECNAME_META))
200: if (xstrcmp(p, n->name))
201: return((enum mdoc_sec)i);
1.2 kristaps 202:
203: return(SEC_CUSTOM);
204: }
205:
206:
207: time_t
208: mdoc_atotime(const char *p)
209: {
210: struct tm tm;
1.11 kristaps 211: char *pp;
1.2 kristaps 212:
1.5 kristaps 213: (void)memset(&tm, 0, sizeof(struct tm));
214:
1.11 kristaps 215: if (xstrcmp(p, "$Mdocdate$"))
216: return(time(NULL));
217: if ((pp = strptime(p, "$Mdocdate: %b %d %Y $", &tm)) && 0 == *pp)
1.2 kristaps 218: return(mktime(&tm));
1.11 kristaps 219: /* XXX - this matches "June 1999", which is wrong. */
220: if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp)
221: return(mktime(&tm));
222: if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp)
1.2 kristaps 223: return(mktime(&tm));
224:
225: return(0);
226: }
227:
228:
1.20 kristaps 229: size_t
230: mdoc_macro2len(int macro)
231: {
232:
233: switch (macro) {
234: case(MDOC_Ad):
235: return(12);
236: case(MDOC_Ao):
237: return(12);
238: case(MDOC_An):
239: return(12);
240: case(MDOC_Aq):
241: return(12);
242: case(MDOC_Ar):
243: return(12);
244: case(MDOC_Bo):
245: return(12);
246: case(MDOC_Bq):
247: return(12);
248: case(MDOC_Cd):
249: return(12);
250: case(MDOC_Cm):
251: return(10);
252: case(MDOC_Do):
253: return(10);
254: case(MDOC_Dq):
255: return(12);
256: case(MDOC_Dv):
257: return(12);
258: case(MDOC_Eo):
259: return(12);
260: case(MDOC_Em):
261: return(10);
262: case(MDOC_Er):
263: return(12);
264: case(MDOC_Ev):
265: return(15);
266: case(MDOC_Fa):
267: return(12);
268: case(MDOC_Fl):
269: return(10);
270: case(MDOC_Fo):
271: return(16);
272: case(MDOC_Fn):
273: return(16);
274: case(MDOC_Ic):
275: return(10);
276: case(MDOC_Li):
277: return(16);
278: case(MDOC_Ms):
279: return(6);
280: case(MDOC_Nm):
281: return(10);
282: case(MDOC_No):
283: return(12);
284: case(MDOC_Oo):
285: return(10);
286: case(MDOC_Op):
287: return(14);
288: case(MDOC_Pa):
289: return(32);
290: case(MDOC_Pf):
291: return(12);
292: case(MDOC_Po):
293: return(12);
294: case(MDOC_Pq):
295: return(12);
296: case(MDOC_Ql):
297: return(16);
298: case(MDOC_Qo):
299: return(12);
300: case(MDOC_So):
301: return(12);
302: case(MDOC_Sq):
303: return(12);
304: case(MDOC_Sy):
305: return(6);
306: case(MDOC_Sx):
307: return(16);
308: case(MDOC_Tn):
309: return(10);
310: case(MDOC_Va):
311: return(12);
312: case(MDOC_Vt):
313: return(12);
314: case(MDOC_Xr):
315: return(10);
316: default:
317: break;
318: };
319: return(0);
320: }
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