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1.4 ! schwarze 1: /* $Id: mdoc_strings.c,v 1.3 2009/06/15 01:36:23 schwarze 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
1.2 schwarze 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.2 schwarze 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
17: #include <sys/types.h>
18:
19: #include <assert.h>
20: #include <ctype.h>
21: #include <stdlib.h>
22: #include <stdio.h>
23: #include <string.h>
24:
25: #include "libmdoc.h"
26:
27: /*
28: * Various string-literal operations: converting scalars to and from
29: * strings, etc.
30: */
31:
32: struct mdoc_secname {
33: const char *name;
34: int flag;
35: #define MSECNAME_META (1 << 0)
36: };
37:
38: /* Section names corresponding to mdoc_sec. */
39:
40: static const struct mdoc_secname secnames[] = {
41: { "PROLOGUE", MSECNAME_META },
42: { "BODY", MSECNAME_META },
43: { "NAME", 0 },
44: { "LIBRARY", 0 },
45: { "SYNOPSIS", 0 },
46: { "DESCRIPTION", 0 },
47: { "IMPLEMENTATION NOTES", 0 },
48: { "RETURN VALUES", 0 },
49: { "ENVIRONMENT", 0 },
50: { "FILES", 0 },
51: { "EXAMPLES", 0 },
52: { "DIAGNOSTICS", 0 },
53: { "COMPATIBILITY", 0 },
54: { "ERRORS", 0 },
55: { "SEE ALSO", 0 },
56: { "STANDARDS", 0 },
57: { "HISTORY", 0 },
58: { "AUTHORS", 0 },
59: { "CAVEATS", 0 },
60: { "BUGS", 0 },
61: { NULL, 0 }
62: };
63:
64:
65: size_t
66: mdoc_isescape(const char *p)
67: {
68: size_t c;
69:
70: if ('\\' != *p++)
71: return(0);
72:
73: switch (*p) {
74: case ('\\'):
75: /* FALLTHROUGH */
76: case ('\''):
77: /* FALLTHROUGH */
78: case ('`'):
79: /* FALLTHROUGH */
80: case ('q'):
81: /* FALLTHROUGH */
82: case ('-'):
83: /* FALLTHROUGH */
1.3 schwarze 84: case ('~'):
85: /* FALLTHROUGH */
86: case ('^'):
87: /* FALLTHROUGH */
1.1 kristaps 88: case ('%'):
89: /* FALLTHROUGH */
90: case ('0'):
91: /* FALLTHROUGH */
92: case (' '):
93: /* FALLTHROUGH */
94: case ('|'):
95: /* FALLTHROUGH */
96: case ('&'):
97: /* FALLTHROUGH */
98: case ('.'):
99: /* FALLTHROUGH */
100: case (':'):
101: /* FALLTHROUGH */
102: case ('e'):
103: return(2);
104: case ('*'):
105: if (0 == *++p || ! isgraph((u_char)*p))
106: return(0);
107: switch (*p) {
108: case ('('):
109: if (0 == *++p || ! isgraph((u_char)*p))
110: return(0);
111: return(4);
112: case ('['):
113: for (c = 3, p++; *p && ']' != *p; p++, c++)
114: if ( ! isgraph((u_char)*p))
115: break;
116: return(*p == ']' ? c : 0);
117: default:
118: break;
119: }
120: return(3);
121: case ('('):
122: if (0 == *++p || ! isgraph((u_char)*p))
123: return(0);
124: if (0 == *++p || ! isgraph((u_char)*p))
125: return(0);
126: return(4);
127: case ('['):
128: break;
129: default:
130: return(0);
131: }
132:
133: for (c = 3, p++; *p && ']' != *p; p++, c++)
134: if ( ! isgraph((u_char)*p))
135: break;
136:
137: return(*p == ']' ? c : 0);
138: }
139:
140:
141: int
142: mdoc_iscdelim(char p)
143: {
144:
145: switch (p) {
146: case('.'):
147: /* FALLTHROUGH */
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 */
168: case('}'):
169: return(1);
170: default:
171: break;
172: }
173:
174: return(0);
175: }
176:
177:
178: int
179: mdoc_isdelim(const char *p)
180: {
181:
182: if (0 == *p)
183: return(0);
184: if (0 != *(p + 1))
185: return(0);
186: return(mdoc_iscdelim(*p));
187: }
188:
189:
190: enum mdoc_sec
191: mdoc_atosec(const char *p)
192: {
193: const struct mdoc_secname *n;
194: int i;
195:
196: for (i = 0, n = secnames; n->name; n++, i++)
197: if ( ! (n->flag & MSECNAME_META))
198: if (0 == strcmp(p, n->name))
199: return((enum mdoc_sec)i);
200:
201: return(SEC_CUSTOM);
202: }
203:
204:
205: time_t
206: mdoc_atotime(const char *p)
207: {
208: struct tm tm;
209: char *pp;
210:
211: (void)memset(&tm, 0, sizeof(struct tm));
212:
1.4 ! schwarze 213: if (0 == strcmp(p, "$" "Mdocdate$"))
1.1 kristaps 214: return(time(NULL));
1.4 ! schwarze 215: if ((pp = strptime(p, "$" "Mdocdate: %b %d %Y $", &tm)) && 0 == *pp)
1.1 kristaps 216: return(mktime(&tm));
217: /* XXX - this matches "June 1999", which is wrong. */
218: if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp)
219: return(mktime(&tm));
220: if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp)
221: return(mktime(&tm));
222:
223: return(0);
224: }
225:
226:
227: size_t
228: mdoc_macro2len(int macro)
229: {
230:
231: switch (macro) {
232: case(MDOC_Ad):
233: return(12);
234: case(MDOC_Ao):
235: return(12);
236: case(MDOC_An):
237: return(12);
238: case(MDOC_Aq):
239: return(12);
240: case(MDOC_Ar):
241: return(12);
242: case(MDOC_Bo):
243: return(12);
244: case(MDOC_Bq):
245: return(12);
246: case(MDOC_Cd):
247: return(12);
248: case(MDOC_Cm):
249: return(10);
250: case(MDOC_Do):
251: return(10);
252: case(MDOC_Dq):
253: return(12);
254: case(MDOC_Dv):
255: return(12);
256: case(MDOC_Eo):
257: return(12);
258: case(MDOC_Em):
259: return(10);
260: case(MDOC_Er):
261: return(12);
262: case(MDOC_Ev):
263: return(15);
264: case(MDOC_Fa):
265: return(12);
266: case(MDOC_Fl):
267: return(10);
268: case(MDOC_Fo):
269: return(16);
270: case(MDOC_Fn):
271: return(16);
272: case(MDOC_Ic):
273: return(10);
274: case(MDOC_Li):
275: return(16);
276: case(MDOC_Ms):
277: return(6);
278: case(MDOC_Nm):
279: return(10);
280: case(MDOC_No):
281: return(12);
282: case(MDOC_Oo):
283: return(10);
284: case(MDOC_Op):
285: return(14);
286: case(MDOC_Pa):
287: return(32);
288: case(MDOC_Pf):
289: return(12);
290: case(MDOC_Po):
291: return(12);
292: case(MDOC_Pq):
293: return(12);
294: case(MDOC_Ql):
295: return(16);
296: case(MDOC_Qo):
297: return(12);
298: case(MDOC_So):
299: return(12);
300: case(MDOC_Sq):
301: return(12);
302: case(MDOC_Sy):
303: return(6);
304: case(MDOC_Sx):
305: return(16);
306: case(MDOC_Tn):
307: return(10);
308: case(MDOC_Va):
309: return(12);
310: case(MDOC_Vt):
311: return(12);
312: case(MDOC_Xr):
313: return(10);
314: default:
315: break;
316: };
317: return(0);
318: }