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1.9 ! kristaps 1: /* $Id: out.c,v 1.8 2009/11/07 08:26:45 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2009 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 above
7: * copyright notice and this permission notice appear in all copies.
8: *
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.
16: */
17: #include <sys/types.h>
18:
1.6 kristaps 19: #include <assert.h>
1.1 kristaps 20: #include <ctype.h>
1.3 kristaps 21: #include <stdio.h>
1.1 kristaps 22: #include <stdlib.h>
1.6 kristaps 23: #include <string.h>
1.7 kristaps 24: #include <time.h>
1.1 kristaps 25:
26: #include "out.h"
27:
1.7 kristaps 28: #ifdef __linux__
29: extern size_t strlcat(char *, const char *, size_t);
30: #endif
1.3 kristaps 31:
32: /*
33: * Convert a `scaling unit' to a consistent form, or fail. Scaling
1.5 kristaps 34: * units are documented in groff.7, mdoc.7, man.7.
1.3 kristaps 35: */
1.1 kristaps 36: int
1.5 kristaps 37: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
1.1 kristaps 38: {
1.4 kristaps 39: char buf[BUFSIZ], hasd;
1.1 kristaps 40: int i;
1.3 kristaps 41: enum roffscale unit;
1.1 kristaps 42:
1.5 kristaps 43: if ('\0' == *src)
44: return(0);
45:
1.4 kristaps 46: i = hasd = 0;
47:
48: switch (*src) {
49: case ('+'):
50: src++;
51: break;
52: case ('-'):
53: buf[i++] = *src++;
54: break;
55: default:
56: break;
57: }
58:
1.5 kristaps 59: if ('\0' == *src)
60: return(0);
61:
1.4 kristaps 62: while (i < BUFSIZ) {
63: if ( ! isdigit((u_char)*src)) {
64: if ('.' != *src)
65: break;
66: else if (hasd)
67: break;
68: else
69: hasd = 1;
70: }
71: buf[i++] = *src++;
72: }
1.1 kristaps 73:
1.3 kristaps 74: if (BUFSIZ == i || (*src && *(src + 1)))
1.1 kristaps 75: return(0);
76:
1.4 kristaps 77: buf[i] = '\0';
1.1 kristaps 78:
1.3 kristaps 79: switch (*src) {
80: case ('c'):
81: unit = SCALE_CM;
82: break;
83: case ('i'):
84: unit = SCALE_IN;
85: break;
86: case ('P'):
87: unit = SCALE_PC;
88: break;
89: case ('p'):
90: unit = SCALE_PT;
91: break;
92: case ('f'):
93: unit = SCALE_FS;
94: break;
95: case ('v'):
96: unit = SCALE_VS;
97: break;
98: case ('m'):
99: unit = SCALE_EM;
100: break;
101: case ('\0'):
1.5 kristaps 102: if (SCALE_MAX == def)
103: return(0);
104: unit = SCALE_BU;
105: break;
1.3 kristaps 106: case ('u'):
107: unit = SCALE_BU;
108: break;
109: case ('M'):
110: unit = SCALE_MM;
111: break;
112: case ('n'):
113: unit = SCALE_EN;
114: break;
115: default:
1.1 kristaps 116: return(0);
1.3 kristaps 117: }
1.1 kristaps 118:
1.4 kristaps 119: if ((dst->scale = atof(buf)) < 0)
1.3 kristaps 120: dst->scale = 0;
121: dst->unit = unit;
1.4 kristaps 122: dst->pt = hasd;
123:
1.3 kristaps 124: return(1);
1.1 kristaps 125: }
1.6 kristaps 126:
127:
128: /*
129: * Correctly writes the time in nroff form, which differs from standard
130: * form in that a space isn't printed in lieu of the extra %e field for
131: * single-digit dates.
132: */
133: void
134: time2a(time_t t, char *dst, size_t sz)
135: {
136: struct tm tm;
137: char buf[5];
138: char *p;
139: size_t nsz;
140:
141: assert(sz > 1);
142: localtime_r(&t, &tm);
143:
144: p = dst;
145: nsz = 0;
146:
147: dst[0] = '\0';
148:
149: if (0 == (nsz = strftime(p, sz, "%B ", &tm)))
150: return;
151:
152: p += (int)nsz;
153: sz -= nsz;
154:
155: if (0 == strftime(buf, sizeof(buf), "%e, ", &tm))
156: return;
157:
158: nsz = strlcat(p, buf + (' ' == buf[0] ? 1 : 0), sz);
159:
160: if (nsz >= sz)
161: return;
162:
163: p += (int)nsz;
164: sz -= nsz;
165:
166: (void)strftime(p, sz, "%Y", &tm);
167: }
168:
1.8 kristaps 169:
170: /* Returns length of parsed string. */
171: int
172: a2roffdeco(enum roffdeco *d,
173: const char **word, size_t *sz)
174: {
175: int j, type, sv, t, lim;
176: const char *wp;
177:
178: *d = DECO_NONE;
179: wp = *word;
180: type = 1;
181:
182: switch (*wp) {
183: case ('\0'):
184: return(0);
185:
186: case ('('):
187: wp++;
188: if ('\0' == *wp)
189: return(1);
190: if ('\0' == *(wp + 1))
191: return(2);
192:
193: *d = DECO_SPECIAL;
194: *sz = 2;
195: *word = wp;
196: return(3);
197:
198: case ('*'):
199: wp++;
200:
201: switch (*wp) {
202: case ('\0'):
203: return(1);
204:
205: case ('('):
206: wp++;
207: if ('\0' == *wp)
208: return(2);
209: if ('\0' == *(wp + 1))
210: return(3);
211:
212: *d = DECO_RESERVED;
213: *sz = 2;
214: *word = wp;
215: return(4);
216:
217: case ('['):
218: type = 0;
219: break;
220:
221: default:
222: *d = DECO_RESERVED;
223: *sz = 1;
224: *word = wp;
1.9 ! kristaps 225: return(2);
1.8 kristaps 226: }
227: break;
228:
229: #if 0
230: case ('s'):
231: wp++;
232:
233: /* This closely follows mandoc_special(). */
234: if ('\0' == *wp)
235: return(1);
236:
237: t = 0;
238: lim = 1;
239:
240: if (*wp == '\'') {
241: lim = 0;
242: t = 1;
243: ++wp;
244: } else if (*wp == '[') {
245: lim = 0;
246: t = 2;
247: ++wp;
248: } else if (*wp == '(') {
249: lim = 2;
250: t = 3;
251: ++wp;
252: }
253:
254: if (*wp == '+' || *wp == '-')
255: ++wp;
256:
257: if (*wp == '\'') {
258: if (t) {
259: *word = wp;
260: return;
261: }
262: lim = 0;
263: t = 1;
264: ++wp;
265: } else if (*wp == '[') {
266: if (t) {
267: *word = wp;
268: return;
269: }
270: lim = 0;
271: t = 2;
272: ++wp;
273: } else if (*wp == '(') {
274: if (t) {
275: *word = wp;
276: return;
277: }
278: lim = 2;
279: t = 3;
280: ++wp;
281: }
282:
283: if ( ! isdigit((u_char)*wp)) {
284: *word = --wp;
285: return;
286: }
287:
288: for (j = 0; isdigit((u_char)*wp); j++) {
289: if (lim && j >= lim)
290: break;
291: ++wp;
292: }
293:
294: if (t && t < 3) {
295: if (1 == t && *wp != '\'') {
296: *word = --wp;
297: return;
298: }
299: if (2 == t && *wp != ']') {
300: *word = --wp;
301: return;
302: }
303: ++wp;
304: }
305: *word = --wp;
306: return;
307: #endif
308:
309: case ('f'):
310: wp++;
311:
312: switch (*wp) {
313: case ('\0'):
314: return(1);
315: case ('3'):
316: /* FALLTHROUGH */
317: case ('B'):
318: *d = DECO_BOLD;
319: break;
320: case ('2'):
321: /* FALLTHROUGH */
322: case ('I'):
323: *d = DECO_ITALIC;
324: break;
325: case ('P'):
326: *d = DECO_PREVIOUS;
327: break;
328: case ('1'):
329: /* FALLTHROUGH */
330: case ('R'):
331: *d = DECO_ROMAN;
332: break;
333: default:
334: break;
335: }
336:
337: return(2);
338:
339: case ('['):
340: break;
341:
342: default:
343: *d = DECO_SPECIAL;
344: *word = wp;
345: *sz = 1;
346: return(1);
347: }
348:
349: *word = ++wp;
350: for (j = 0; *wp && ']' != *wp; wp++, j++)
351: /* Loop... */ ;
352:
353: if ('\0' == *wp)
354: return(j + 1);
355:
356: *d = type ? DECO_SPECIAL : DECO_RESERVED;
357: *sz = j;
358: return (j + 2);
359: }