Annotation of src/usr.bin/mandoc/out.c, Revision 1.29
1.29 ! schwarze 1: /* $OpenBSD: out.c,v 1.28 2014/12/23 09:31:17 schwarze Exp $ */
1.1 schwarze 2: /*
1.9 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.24 schwarze 4: * Copyright (c) 2011, 2014 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>
1.1 schwarze 21: #include <stdlib.h>
1.2 schwarze 22: #include <string.h>
23: #include <time.h>
1.1 schwarze 24:
1.20 schwarze 25: #include "mandoc_aux.h"
1.9 schwarze 26: #include "mandoc.h"
1.1 schwarze 27: #include "out.h"
28:
1.9 schwarze 29: static void tblcalc_data(struct rofftbl *, struct roffcol *,
1.18 schwarze 30: const struct tbl_opts *, const struct tbl_dat *);
1.9 schwarze 31: static void tblcalc_literal(struct rofftbl *, struct roffcol *,
32: const struct tbl_dat *);
33: static void tblcalc_number(struct rofftbl *, struct roffcol *,
1.18 schwarze 34: const struct tbl_opts *, const struct tbl_dat *);
1.9 schwarze 35:
1.21 schwarze 36:
37: /*
1.27 schwarze 38: * Parse the *src string and store a scaling unit into *dst.
39: * If the string doesn't specify the unit, use the default.
40: * If no default is specified, fail.
1.28 schwarze 41: * Return 2 on complete success, 1 when a conversion was done,
42: * but there was trailing garbage, and 0 on total failure.
1.1 schwarze 43: */
44: int
45: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
46: {
1.27 schwarze 47: char *endptr;
1.1 schwarze 48:
1.28 schwarze 49: dst->unit = def == SCALE_MAX ? SCALE_BU : def;
50: dst->scale = strtod(src, &endptr);
51: if (endptr == src)
1.1 schwarze 52: return(0);
53:
1.28 schwarze 54: switch (*endptr++) {
1.21 schwarze 55: case 'c':
1.28 schwarze 56: dst->unit = SCALE_CM;
1.1 schwarze 57: break;
1.21 schwarze 58: case 'i':
1.28 schwarze 59: dst->unit = SCALE_IN;
60: break;
61: case 'f':
62: dst->unit = SCALE_FS;
63: break;
64: case 'M':
65: dst->unit = SCALE_MM;
66: break;
67: case 'm':
68: dst->unit = SCALE_EM;
69: break;
70: case 'n':
71: dst->unit = SCALE_EN;
1.1 schwarze 72: break;
1.21 schwarze 73: case 'P':
1.28 schwarze 74: dst->unit = SCALE_PC;
1.1 schwarze 75: break;
1.21 schwarze 76: case 'p':
1.28 schwarze 77: dst->unit = SCALE_PT;
1.1 schwarze 78: break;
1.28 schwarze 79: case 'u':
80: dst->unit = SCALE_BU;
1.1 schwarze 81: break;
1.21 schwarze 82: case 'v':
1.28 schwarze 83: dst->unit = SCALE_VS;
1.1 schwarze 84: break;
1.21 schwarze 85: case '\0':
1.28 schwarze 86: endptr--;
87: /* FALLTHROUGH */
88: default:
1.1 schwarze 89: if (SCALE_MAX == def)
90: return(0);
1.28 schwarze 91: dst->unit = def;
1.1 schwarze 92: break;
93: }
94:
1.28 schwarze 95: return(*endptr == '\0' ? 2 : 1);
1.3 schwarze 96: }
1.9 schwarze 97:
98: /*
99: * Calculate the abstract widths and decimal positions of columns in a
100: * table. This routine allocates the columns structures then runs over
101: * all rows and cells in the table. The function pointers in "tbl" are
102: * used for the actual width calculations.
103: */
104: void
1.24 schwarze 105: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
106: size_t totalwidth)
1.9 schwarze 107: {
108: const struct tbl_dat *dp;
109: struct roffcol *col;
1.24 schwarze 110: size_t ewidth, xwidth;
1.16 schwarze 111: int spans;
1.24 schwarze 112: int icol, maxcol, necol, nxcol;
1.9 schwarze 113:
114: /*
115: * Allocate the master column specifiers. These will hold the
116: * widths and decimal positions for all cells in the column. It
117: * must be freed and nullified by the caller.
118: */
119:
120: assert(NULL == tbl->cols);
1.21 schwarze 121: tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
122: sizeof(struct roffcol));
1.9 schwarze 123:
1.25 schwarze 124: for (maxcol = -1; sp; sp = sp->next) {
1.9 schwarze 125: if (TBL_SPAN_DATA != sp->pos)
126: continue;
1.16 schwarze 127: spans = 1;
1.9 schwarze 128: /*
129: * Account for the data cells in the layout, matching it
130: * to data cells in the data section.
131: */
132: for (dp = sp->first; dp; dp = dp->next) {
1.16 schwarze 133: /* Do not used spanned cells in the calculation. */
134: if (0 < --spans)
135: continue;
136: spans = dp->spans;
137: if (1 < spans)
138: continue;
1.24 schwarze 139: icol = dp->layout->head->ident;
140: if (maxcol < icol)
141: maxcol = icol;
142: col = tbl->cols + icol;
143: col->flags |= dp->layout->flags;
144: if (dp->layout->flags & TBL_CELL_WIGN)
145: continue;
1.18 schwarze 146: tblcalc_data(tbl, col, sp->opts, dp);
1.24 schwarze 147: }
148: }
149:
150: /*
151: * Count columns to equalize and columns to maximize.
152: * Find maximum width of the columns to equalize.
153: * Find total width of the columns *not* to maximize.
154: */
155:
156: necol = nxcol = 0;
157: ewidth = xwidth = 0;
158: for (icol = 0; icol <= maxcol; icol++) {
159: col = tbl->cols + icol;
160: if (col->flags & TBL_CELL_EQUAL) {
161: necol++;
162: if (ewidth < col->width)
163: ewidth = col->width;
164: }
165: if (col->flags & TBL_CELL_WMAX)
166: nxcol++;
167: else
168: xwidth += col->width;
169: }
170:
171: /*
172: * Equalize columns, if requested for any of them.
173: * Update total width of the columns not to maximize.
174: */
175:
176: if (necol) {
177: for (icol = 0; icol <= maxcol; icol++) {
178: col = tbl->cols + icol;
179: if ( ! (col->flags & TBL_CELL_EQUAL))
180: continue;
181: if (col->width == ewidth)
182: continue;
183: if (nxcol && totalwidth)
184: xwidth += ewidth - col->width;
185: col->width = ewidth;
186: }
187: }
188:
189: /*
190: * If there are any columns to maximize, find the total
191: * available width, deducting 3n margins between columns.
192: * Distribute the available width evenly.
193: */
194:
195: if (nxcol && totalwidth) {
196: xwidth = totalwidth - 3*maxcol - xwidth;
197: for (icol = 0; icol <= maxcol; icol++) {
198: col = tbl->cols + icol;
199: if ( ! (col->flags & TBL_CELL_WMAX))
200: continue;
201: col->width = xwidth / nxcol--;
202: xwidth -= col->width;
1.9 schwarze 203: }
204: }
205: }
206:
207: static void
208: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 209: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 210: {
211: size_t sz;
212:
213: /* Branch down into data sub-types. */
214:
215: switch (dp->layout->pos) {
1.21 schwarze 216: case TBL_CELL_HORIZ:
1.9 schwarze 217: /* FALLTHROUGH */
1.21 schwarze 218: case TBL_CELL_DHORIZ:
1.9 schwarze 219: sz = (*tbl->len)(1, tbl->arg);
220: if (col->width < sz)
221: col->width = sz;
222: break;
1.21 schwarze 223: case TBL_CELL_LONG:
1.9 schwarze 224: /* FALLTHROUGH */
1.21 schwarze 225: case TBL_CELL_CENTRE:
1.9 schwarze 226: /* FALLTHROUGH */
1.21 schwarze 227: case TBL_CELL_LEFT:
1.9 schwarze 228: /* FALLTHROUGH */
1.21 schwarze 229: case TBL_CELL_RIGHT:
1.9 schwarze 230: tblcalc_literal(tbl, col, dp);
231: break;
1.21 schwarze 232: case TBL_CELL_NUMBER:
1.18 schwarze 233: tblcalc_number(tbl, col, opts, dp);
1.9 schwarze 234: break;
1.21 schwarze 235: case TBL_CELL_DOWN:
1.10 schwarze 236: break;
1.9 schwarze 237: default:
238: abort();
239: /* NOTREACHED */
240: }
241: }
242:
243: static void
244: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
245: const struct tbl_dat *dp)
246: {
1.16 schwarze 247: size_t sz;
1.10 schwarze 248: const char *str;
1.9 schwarze 249:
1.10 schwarze 250: str = dp->string ? dp->string : "";
251: sz = (*tbl->slen)(str, tbl->arg);
252:
1.9 schwarze 253: if (col->width < sz)
254: col->width = sz;
255: }
256:
257: static void
258: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 259: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 260: {
1.21 schwarze 261: int i;
1.10 schwarze 262: size_t sz, psz, ssz, d;
263: const char *str;
1.9 schwarze 264: char *cp;
265: char buf[2];
266:
267: /*
268: * First calculate number width and decimal place (last + 1 for
1.16 schwarze 269: * non-decimal numbers). If the stored decimal is subsequent to
1.9 schwarze 270: * ours, make our size longer by that difference
271: * (right-"shifting"); similarly, if ours is subsequent the
272: * stored, then extend the stored size by the difference.
273: * Finally, re-assign the stored values.
274: */
275:
1.10 schwarze 276: str = dp->string ? dp->string : "";
277: sz = (*tbl->slen)(str, tbl->arg);
1.9 schwarze 278:
1.10 schwarze 279: /* FIXME: TBL_DATA_HORIZ et al.? */
1.9 schwarze 280:
1.18 schwarze 281: buf[0] = opts->decimal;
1.9 schwarze 282: buf[1] = '\0';
283:
284: psz = (*tbl->slen)(buf, tbl->arg);
285:
1.18 schwarze 286: if (NULL != (cp = strrchr(str, opts->decimal))) {
1.9 schwarze 287: buf[1] = '\0';
288: for (ssz = 0, i = 0; cp != &str[i]; i++) {
289: buf[0] = str[i];
290: ssz += (*tbl->slen)(buf, tbl->arg);
291: }
292: d = ssz + psz;
293: } else
294: d = sz + psz;
295:
296: /* Adjust the settings for this column. */
297:
298: if (col->decimal > d) {
299: sz += col->decimal - d;
300: d = col->decimal;
301: } else
302: col->width += d - col->decimal;
303:
304: if (sz > col->width)
305: col->width = sz;
306: if (d > col->decimal)
307: col->decimal = d;
308: }
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