Annotation of mandoc/out.c, Revision 1.40
1.40 ! kristaps 1: /* $Id: out.c,v 1.39 2011/03/17 08:49:34 kristaps Exp $ */
1.1 kristaps 2: /*
1.36 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.37 schwarze 4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.12 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
20: #endif
21:
1.1 kristaps 22: #include <sys/types.h>
23:
1.6 kristaps 24: #include <assert.h>
1.1 kristaps 25: #include <ctype.h>
1.3 kristaps 26: #include <stdio.h>
1.1 kristaps 27: #include <stdlib.h>
1.6 kristaps 28: #include <string.h>
1.7 kristaps 29: #include <time.h>
1.1 kristaps 30:
1.30 kristaps 31: #include "mandoc.h"
1.1 kristaps 32: #include "out.h"
33:
1.30 kristaps 34: static void tblcalc_data(struct rofftbl *, struct roffcol *,
35: const struct tbl *, const struct tbl_dat *);
36: static void tblcalc_literal(struct rofftbl *, struct roffcol *,
37: const struct tbl_dat *);
38: static void tblcalc_number(struct rofftbl *, struct roffcol *,
39: const struct tbl *, const struct tbl_dat *);
40:
1.3 kristaps 41: /*
42: * Convert a `scaling unit' to a consistent form, or fail. Scaling
1.5 kristaps 43: * units are documented in groff.7, mdoc.7, man.7.
1.3 kristaps 44: */
1.1 kristaps 45: int
1.5 kristaps 46: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
1.1 kristaps 47: {
1.4 kristaps 48: char buf[BUFSIZ], hasd;
1.1 kristaps 49: int i;
1.3 kristaps 50: enum roffscale unit;
1.1 kristaps 51:
1.5 kristaps 52: if ('\0' == *src)
53: return(0);
54:
1.4 kristaps 55: i = hasd = 0;
56:
57: switch (*src) {
58: case ('+'):
59: src++;
60: break;
61: case ('-'):
62: buf[i++] = *src++;
63: break;
64: default:
65: break;
66: }
67:
1.5 kristaps 68: if ('\0' == *src)
69: return(0);
70:
1.4 kristaps 71: while (i < BUFSIZ) {
72: if ( ! isdigit((u_char)*src)) {
73: if ('.' != *src)
74: break;
75: else if (hasd)
76: break;
77: else
78: hasd = 1;
79: }
80: buf[i++] = *src++;
81: }
1.1 kristaps 82:
1.3 kristaps 83: if (BUFSIZ == i || (*src && *(src + 1)))
1.1 kristaps 84: return(0);
85:
1.4 kristaps 86: buf[i] = '\0';
1.1 kristaps 87:
1.3 kristaps 88: switch (*src) {
89: case ('c'):
90: unit = SCALE_CM;
91: break;
92: case ('i'):
93: unit = SCALE_IN;
94: break;
95: case ('P'):
96: unit = SCALE_PC;
97: break;
98: case ('p'):
99: unit = SCALE_PT;
100: break;
101: case ('f'):
102: unit = SCALE_FS;
103: break;
104: case ('v'):
105: unit = SCALE_VS;
106: break;
107: case ('m'):
108: unit = SCALE_EM;
109: break;
110: case ('\0'):
1.5 kristaps 111: if (SCALE_MAX == def)
112: return(0);
113: unit = SCALE_BU;
114: break;
1.3 kristaps 115: case ('u'):
116: unit = SCALE_BU;
117: break;
118: case ('M'):
119: unit = SCALE_MM;
120: break;
121: case ('n'):
122: unit = SCALE_EN;
123: break;
124: default:
1.1 kristaps 125: return(0);
1.3 kristaps 126: }
1.1 kristaps 127:
1.23 kristaps 128: /* FIXME: do this in the caller. */
1.4 kristaps 129: if ((dst->scale = atof(buf)) < 0)
1.3 kristaps 130: dst->scale = 0;
131: dst->unit = unit;
132: return(1);
1.1 kristaps 133: }
1.6 kristaps 134:
135:
136: /*
137: * Correctly writes the time in nroff form, which differs from standard
138: * form in that a space isn't printed in lieu of the extra %e field for
139: * single-digit dates.
140: */
141: void
142: time2a(time_t t, char *dst, size_t sz)
143: {
144: struct tm tm;
145: char buf[5];
146: char *p;
147: size_t nsz;
148:
149: assert(sz > 1);
150: localtime_r(&t, &tm);
151:
152: p = dst;
153: nsz = 0;
154:
155: dst[0] = '\0';
156:
157: if (0 == (nsz = strftime(p, sz, "%B ", &tm)))
158: return;
159:
160: p += (int)nsz;
161: sz -= nsz;
162:
163: if (0 == strftime(buf, sizeof(buf), "%e, ", &tm))
164: return;
165:
166: nsz = strlcat(p, buf + (' ' == buf[0] ? 1 : 0), sz);
167:
168: if (nsz >= sz)
169: return;
170:
171: p += (int)nsz;
172: sz -= nsz;
173:
174: (void)strftime(p, sz, "%Y", &tm);
1.8 kristaps 175: }
1.30 kristaps 176:
177: /*
178: * Calculate the abstract widths and decimal positions of columns in a
179: * table. This routine allocates the columns structures then runs over
180: * all rows and cells in the table. The function pointers in "tbl" are
181: * used for the actual width calculations.
182: */
183: void
184: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
185: {
186: const struct tbl_dat *dp;
187: const struct tbl_head *hp;
188: struct roffcol *col;
189:
190: /*
191: * Allocate the master column specifiers. These will hold the
192: * widths and decimal positions for all cells in the column. It
193: * must be freed and nullified by the caller.
194: */
195:
196: assert(NULL == tbl->cols);
1.39 kristaps 197: tbl->cols = mandoc_calloc
1.38 kristaps 198: ((size_t)sp->tbl->cols, sizeof(struct roffcol));
1.30 kristaps 199:
200: hp = sp->head;
201:
202: for ( ; sp; sp = sp->next) {
203: if (TBL_SPAN_DATA != sp->pos)
204: continue;
205: /*
206: * Account for the data cells in the layout, matching it
207: * to data cells in the data section.
208: */
209: for (dp = sp->first; dp; dp = dp->next) {
1.33 kristaps 210: assert(dp->layout);
1.30 kristaps 211: col = &tbl->cols[dp->layout->head->ident];
212: tblcalc_data(tbl, col, sp->tbl, dp);
213: }
214: }
215:
216: /*
217: * Calculate width of the spanners. These get one space for a
218: * vertical line, two for a double-vertical line.
219: */
220:
221: for ( ; hp; hp = hp->next) {
222: col = &tbl->cols[hp->ident];
223: switch (hp->pos) {
224: case (TBL_HEAD_VERT):
225: col->width = (*tbl->len)(1, tbl->arg);
226: break;
227: case (TBL_HEAD_DVERT):
228: col->width = (*tbl->len)(2, tbl->arg);
229: break;
230: default:
231: break;
232: }
233: }
234: }
235:
236: static void
237: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
238: const struct tbl *tp, const struct tbl_dat *dp)
239: {
240: size_t sz;
241:
242: /* Branch down into data sub-types. */
243:
244: switch (dp->layout->pos) {
245: case (TBL_CELL_HORIZ):
246: /* FALLTHROUGH */
247: case (TBL_CELL_DHORIZ):
248: sz = (*tbl->len)(1, tbl->arg);
249: if (col->width < sz)
250: col->width = sz;
251: break;
252: case (TBL_CELL_LONG):
253: /* FALLTHROUGH */
254: case (TBL_CELL_CENTRE):
255: /* FALLTHROUGH */
256: case (TBL_CELL_LEFT):
257: /* FALLTHROUGH */
258: case (TBL_CELL_RIGHT):
259: tblcalc_literal(tbl, col, dp);
260: break;
261: case (TBL_CELL_NUMBER):
262: tblcalc_number(tbl, col, tp, dp);
1.35 kristaps 263: break;
264: case (TBL_CELL_DOWN):
1.30 kristaps 265: break;
266: default:
267: abort();
268: /* NOTREACHED */
269: }
270: }
271:
272: static void
273: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
274: const struct tbl_dat *dp)
275: {
276: size_t sz, bufsz, spsz;
1.34 kristaps 277: const char *str;
1.30 kristaps 278:
279: /*
280: * Calculate our width and use the spacing, with a minimum
281: * spacing dictated by position (centre, e.g,. gets a space on
282: * either side, while right/left get a single adjacent space).
283: */
284:
1.34 kristaps 285: bufsz = spsz = 0;
286: str = dp->string ? dp->string : "";
287: sz = (*tbl->slen)(str, tbl->arg);
288:
289: /* FIXME: TBL_DATA_HORIZ et al.? */
1.30 kristaps 290:
291: assert(dp->layout);
292: switch (dp->layout->pos) {
293: case (TBL_CELL_LONG):
294: /* FALLTHROUGH */
295: case (TBL_CELL_CENTRE):
1.36 schwarze 296: bufsz = (*tbl->len)(1, tbl->arg);
1.30 kristaps 297: break;
298: default:
299: bufsz = (*tbl->len)(1, tbl->arg);
300: break;
301: }
302:
303: if (dp->layout->spacing) {
304: spsz = (*tbl->len)(dp->layout->spacing, tbl->arg);
305: bufsz = bufsz > spsz ? bufsz : spsz;
306: }
307:
308: sz += bufsz;
309: if (col->width < sz)
310: col->width = sz;
311: }
312:
313: static void
314: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
315: const struct tbl *tp, const struct tbl_dat *dp)
316: {
317: int i;
1.34 kristaps 318: size_t sz, psz, ssz, d;
319: const char *str;
1.30 kristaps 320: char *cp;
321: char buf[2];
322:
323: /*
324: * First calculate number width and decimal place (last + 1 for
325: * no-decimal numbers). If the stored decimal is subsequent
326: * ours, make our size longer by that difference
327: * (right-"shifting"); similarly, if ours is subsequent the
328: * stored, then extend the stored size by the difference.
329: * Finally, re-assign the stored values.
330: */
331:
1.34 kristaps 332: str = dp->string ? dp->string : "";
333: sz = (*tbl->slen)(str, tbl->arg);
1.30 kristaps 334:
1.34 kristaps 335: /* FIXME: TBL_DATA_HORIZ et al.? */
1.30 kristaps 336:
337: buf[0] = tp->decimal;
338: buf[1] = '\0';
339:
340: psz = (*tbl->slen)(buf, tbl->arg);
341:
1.32 kristaps 342: if (NULL != (cp = strrchr(str, tp->decimal))) {
1.30 kristaps 343: buf[1] = '\0';
344: for (ssz = 0, i = 0; cp != &str[i]; i++) {
345: buf[0] = str[i];
346: ssz += (*tbl->slen)(buf, tbl->arg);
347: }
348: d = ssz + psz;
349: } else
350: d = sz + psz;
351:
352: /* Padding. */
353:
354: sz += (*tbl->len)(2, tbl->arg);
355: d += (*tbl->len)(1, tbl->arg);
356:
357: /* Adjust the settings for this column. */
358:
359: if (col->decimal > d) {
360: sz += col->decimal - d;
361: d = col->decimal;
362: } else
363: col->width += d - col->decimal;
364:
365: if (sz > col->width)
366: col->width = sz;
367: if (d > col->decimal)
368: col->decimal = d;
1.31 kristaps 369:
370: /* Adjust for stipulated width. */
371:
1.34 kristaps 372: if (col->width < dp->layout->spacing)
373: col->width = dp->layout->spacing;
1.30 kristaps 374: }
375:
376:
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