Annotation of src/usr.bin/mandoc/out.c, Revision 1.43
1.43 ! schwarze 1: /* $OpenBSD: out.c,v 1.42 2017/06/27 18:23:29 schwarze Exp $ */
1.1 schwarze 2: /*
1.9 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.43 ! schwarze 4: * Copyright (c) 2011,2014,2015,2017,2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 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: */
18: #include <sys/types.h>
19:
1.2 schwarze 20: #include <assert.h>
1.42 schwarze 21: #include <stdint.h>
1.1 schwarze 22: #include <stdlib.h>
1.2 schwarze 23: #include <string.h>
24: #include <time.h>
1.1 schwarze 25:
1.20 schwarze 26: #include "mandoc_aux.h"
1.9 schwarze 27: #include "mandoc.h"
1.1 schwarze 28: #include "out.h"
29:
1.9 schwarze 30: static void tblcalc_data(struct rofftbl *, struct roffcol *,
1.37 schwarze 31: const struct tbl_opts *, const struct tbl_dat *,
32: size_t);
1.9 schwarze 33: static void tblcalc_literal(struct rofftbl *, struct roffcol *,
1.37 schwarze 34: const struct tbl_dat *, size_t);
1.9 schwarze 35: static void tblcalc_number(struct rofftbl *, struct roffcol *,
1.18 schwarze 36: const struct tbl_opts *, const struct tbl_dat *);
1.9 schwarze 37:
1.21 schwarze 38:
39: /*
1.27 schwarze 40: * Parse the *src string and store a scaling unit into *dst.
41: * If the string doesn't specify the unit, use the default.
42: * If no default is specified, fail.
1.36 schwarze 43: * Return a pointer to the byte after the last byte used,
44: * or NULL on total failure.
1.1 schwarze 45: */
1.36 schwarze 46: const char *
1.1 schwarze 47: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
48: {
1.27 schwarze 49: char *endptr;
1.1 schwarze 50:
1.28 schwarze 51: dst->unit = def == SCALE_MAX ? SCALE_BU : def;
52: dst->scale = strtod(src, &endptr);
53: if (endptr == src)
1.36 schwarze 54: return NULL;
1.1 schwarze 55:
1.28 schwarze 56: switch (*endptr++) {
1.21 schwarze 57: case 'c':
1.28 schwarze 58: dst->unit = SCALE_CM;
1.1 schwarze 59: break;
1.21 schwarze 60: case 'i':
1.28 schwarze 61: dst->unit = SCALE_IN;
62: break;
63: case 'f':
64: dst->unit = SCALE_FS;
65: break;
66: case 'M':
67: dst->unit = SCALE_MM;
68: break;
69: case 'm':
70: dst->unit = SCALE_EM;
71: break;
72: case 'n':
73: dst->unit = SCALE_EN;
1.1 schwarze 74: break;
1.21 schwarze 75: case 'P':
1.28 schwarze 76: dst->unit = SCALE_PC;
1.1 schwarze 77: break;
1.21 schwarze 78: case 'p':
1.28 schwarze 79: dst->unit = SCALE_PT;
1.1 schwarze 80: break;
1.28 schwarze 81: case 'u':
82: dst->unit = SCALE_BU;
1.1 schwarze 83: break;
1.21 schwarze 84: case 'v':
1.28 schwarze 85: dst->unit = SCALE_VS;
1.1 schwarze 86: break;
1.40 schwarze 87: default:
1.28 schwarze 88: endptr--;
1.1 schwarze 89: if (SCALE_MAX == def)
1.36 schwarze 90: return NULL;
1.28 schwarze 91: dst->unit = def;
1.1 schwarze 92: break;
93: }
1.36 schwarze 94: return endptr;
1.3 schwarze 95: }
1.9 schwarze 96:
97: /*
98: * Calculate the abstract widths and decimal positions of columns in a
99: * table. This routine allocates the columns structures then runs over
100: * all rows and cells in the table. The function pointers in "tbl" are
101: * used for the actual width calculations.
102: */
103: void
1.24 schwarze 104: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
1.38 schwarze 105: size_t offset, size_t rmargin)
1.9 schwarze 106: {
1.37 schwarze 107: struct roffsu su;
1.30 schwarze 108: const struct tbl_opts *opts;
1.9 schwarze 109: const struct tbl_dat *dp;
110: struct roffcol *col;
1.24 schwarze 111: size_t ewidth, xwidth;
1.16 schwarze 112: int spans;
1.30 schwarze 113: int icol, maxcol, necol, nxcol, quirkcol;
1.9 schwarze 114:
115: /*
116: * Allocate the master column specifiers. These will hold the
117: * widths and decimal positions for all cells in the column. It
118: * must be freed and nullified by the caller.
119: */
120:
121: assert(NULL == tbl->cols);
1.21 schwarze 122: tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
123: sizeof(struct roffcol));
1.30 schwarze 124: opts = sp->opts;
1.9 schwarze 125:
1.25 schwarze 126: for (maxcol = -1; sp; sp = sp->next) {
1.9 schwarze 127: if (TBL_SPAN_DATA != sp->pos)
128: continue;
1.16 schwarze 129: spans = 1;
1.9 schwarze 130: /*
131: * Account for the data cells in the layout, matching it
132: * to data cells in the data section.
133: */
134: for (dp = sp->first; dp; dp = dp->next) {
1.16 schwarze 135: /* Do not used spanned cells in the calculation. */
136: if (0 < --spans)
137: continue;
138: spans = dp->spans;
139: if (1 < spans)
140: continue;
1.31 schwarze 141: icol = dp->layout->col;
1.42 schwarze 142: while (maxcol < icol)
143: tbl->cols[++maxcol].spacing = SIZE_MAX;
1.24 schwarze 144: col = tbl->cols + icol;
145: col->flags |= dp->layout->flags;
146: if (dp->layout->flags & TBL_CELL_WIGN)
147: continue;
1.37 schwarze 148: if (dp->layout->wstr != NULL &&
149: dp->layout->width == 0 &&
150: a2roffsu(dp->layout->wstr, &su, SCALE_EN)
151: != NULL)
152: dp->layout->width =
153: (*tbl->sulen)(&su, tbl->arg);
154: if (col->width < dp->layout->width)
155: col->width = dp->layout->width;
1.42 schwarze 156: if (dp->layout->spacing != SIZE_MAX &&
157: (col->spacing == SIZE_MAX ||
158: col->spacing < dp->layout->spacing))
159: col->spacing = dp->layout->spacing;
1.38 schwarze 160: tblcalc_data(tbl, col, opts, dp,
1.39 schwarze 161: dp->block == 0 ? 0 :
162: dp->layout->width ? dp->layout->width :
1.41 schwarze 163: rmargin ? (rmargin + sp->opts->cols / 2)
164: / (sp->opts->cols + 1) : 0);
1.24 schwarze 165: }
166: }
167:
168: /*
169: * Count columns to equalize and columns to maximize.
170: * Find maximum width of the columns to equalize.
171: * Find total width of the columns *not* to maximize.
172: */
173:
174: necol = nxcol = 0;
175: ewidth = xwidth = 0;
176: for (icol = 0; icol <= maxcol; icol++) {
177: col = tbl->cols + icol;
1.42 schwarze 178: if (col->spacing == SIZE_MAX || icol == maxcol)
179: col->spacing = 3;
1.24 schwarze 180: if (col->flags & TBL_CELL_EQUAL) {
181: necol++;
182: if (ewidth < col->width)
183: ewidth = col->width;
184: }
185: if (col->flags & TBL_CELL_WMAX)
186: nxcol++;
187: else
188: xwidth += col->width;
189: }
190:
191: /*
192: * Equalize columns, if requested for any of them.
193: * Update total width of the columns not to maximize.
194: */
195:
196: if (necol) {
197: for (icol = 0; icol <= maxcol; icol++) {
198: col = tbl->cols + icol;
199: if ( ! (col->flags & TBL_CELL_EQUAL))
200: continue;
201: if (col->width == ewidth)
202: continue;
1.38 schwarze 203: if (nxcol && rmargin)
1.24 schwarze 204: xwidth += ewidth - col->width;
205: col->width = ewidth;
206: }
207: }
208:
209: /*
210: * If there are any columns to maximize, find the total
211: * available width, deducting 3n margins between columns.
212: * Distribute the available width evenly.
213: */
214:
1.38 schwarze 215: if (nxcol && rmargin) {
1.35 schwarze 216: xwidth += 3*maxcol +
1.30 schwarze 217: (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
218: 2 : !!opts->lvert + !!opts->rvert);
1.38 schwarze 219: if (rmargin <= offset + xwidth)
1.35 schwarze 220: return;
1.38 schwarze 221: xwidth = rmargin - offset - xwidth;
1.30 schwarze 222:
223: /*
224: * Emulate a bug in GNU tbl width calculation that
225: * manifests itself for large numbers of x-columns.
226: * Emulating it for 5 x-columns gives identical
227: * behaviour for up to 6 x-columns.
228: */
229:
230: if (nxcol == 5) {
231: quirkcol = xwidth % nxcol + 2;
232: if (quirkcol != 3 && quirkcol != 4)
233: quirkcol = -1;
234: } else
235: quirkcol = -1;
236:
237: necol = 0;
238: ewidth = 0;
1.24 schwarze 239: for (icol = 0; icol <= maxcol; icol++) {
240: col = tbl->cols + icol;
241: if ( ! (col->flags & TBL_CELL_WMAX))
242: continue;
1.30 schwarze 243: col->width = (double)xwidth * ++necol / nxcol
244: - ewidth + 0.4995;
245: if (necol == quirkcol)
246: col->width--;
247: ewidth += col->width;
1.9 schwarze 248: }
249: }
250: }
251:
252: static void
253: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.37 schwarze 254: const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw)
1.9 schwarze 255: {
256: size_t sz;
257:
258: /* Branch down into data sub-types. */
259:
260: switch (dp->layout->pos) {
1.21 schwarze 261: case TBL_CELL_HORIZ:
262: case TBL_CELL_DHORIZ:
1.9 schwarze 263: sz = (*tbl->len)(1, tbl->arg);
264: if (col->width < sz)
265: col->width = sz;
266: break;
1.21 schwarze 267: case TBL_CELL_LONG:
268: case TBL_CELL_CENTRE:
269: case TBL_CELL_LEFT:
270: case TBL_CELL_RIGHT:
1.37 schwarze 271: tblcalc_literal(tbl, col, dp, mw);
1.9 schwarze 272: break;
1.21 schwarze 273: case TBL_CELL_NUMBER:
1.18 schwarze 274: tblcalc_number(tbl, col, opts, dp);
1.9 schwarze 275: break;
1.21 schwarze 276: case TBL_CELL_DOWN:
1.10 schwarze 277: break;
1.9 schwarze 278: default:
279: abort();
280: }
281: }
282:
283: static void
284: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
1.37 schwarze 285: const struct tbl_dat *dp, size_t mw)
1.9 schwarze 286: {
1.37 schwarze 287: const char *str; /* Beginning of the first line. */
288: const char *beg; /* Beginning of the current line. */
289: char *end; /* End of the current line. */
1.38 schwarze 290: size_t lsz; /* Length of the current line. */
291: size_t wsz; /* Length of the current word. */
1.37 schwarze 292:
293: if (dp->string == NULL || *dp->string == '\0')
294: return;
295: str = mw ? mandoc_strdup(dp->string) : dp->string;
1.38 schwarze 296: lsz = 0;
1.37 schwarze 297: for (beg = str; beg != NULL && *beg != '\0'; beg = end) {
298: end = mw ? strchr(beg, ' ') : NULL;
299: if (end != NULL) {
300: *end++ = '\0';
301: while (*end == ' ')
302: end++;
303: }
1.38 schwarze 304: wsz = (*tbl->slen)(beg, tbl->arg);
305: if (mw && lsz && lsz + 1 + wsz <= mw)
306: lsz += 1 + wsz;
307: else
308: lsz = wsz;
309: if (col->width < lsz)
310: col->width = lsz;
1.37 schwarze 311: }
312: if (mw)
313: free((void *)str);
1.9 schwarze 314: }
315:
316: static void
317: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 318: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 319: {
1.21 schwarze 320: int i;
1.43 ! schwarze 321: size_t sz, ssz, d;
1.10 schwarze 322: const char *str;
1.9 schwarze 323: char *cp;
324: char buf[2];
325:
326: /*
327: * First calculate number width and decimal place (last + 1 for
1.16 schwarze 328: * non-decimal numbers). If the stored decimal is subsequent to
1.9 schwarze 329: * ours, make our size longer by that difference
330: * (right-"shifting"); similarly, if ours is subsequent the
331: * stored, then extend the stored size by the difference.
332: * Finally, re-assign the stored values.
333: */
334:
1.10 schwarze 335: str = dp->string ? dp->string : "";
336: sz = (*tbl->slen)(str, tbl->arg);
1.9 schwarze 337:
1.10 schwarze 338: /* FIXME: TBL_DATA_HORIZ et al.? */
1.9 schwarze 339:
1.18 schwarze 340: buf[0] = opts->decimal;
1.9 schwarze 341: buf[1] = '\0';
342:
1.18 schwarze 343: if (NULL != (cp = strrchr(str, opts->decimal))) {
1.9 schwarze 344: buf[1] = '\0';
345: for (ssz = 0, i = 0; cp != &str[i]; i++) {
346: buf[0] = str[i];
347: ssz += (*tbl->slen)(buf, tbl->arg);
348: }
1.43 ! schwarze 349: d = ssz;
1.9 schwarze 350: } else
1.43 ! schwarze 351: d = sz;
1.9 schwarze 352:
353: /* Adjust the settings for this column. */
354:
355: if (col->decimal > d) {
356: sz += col->decimal - d;
357: d = col->decimal;
358: } else
359: col->width += d - col->decimal;
360:
361: if (sz > col->width)
362: col->width = sz;
363: if (d > col->decimal)
364: col->decimal = d;
365: }
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