Annotation of src/usr.bin/mandoc/out.c, Revision 1.27
1.27 ! schwarze 1: /* $OpenBSD: out.c,v 1.26 2014/12/04 02:05:16 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.
! 41: * Return 1 on success and 0 on failure.
1.1 schwarze 42: */
43: int
44: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
45: {
1.27 ! schwarze 46: char *endptr;
! 47: double scale;
1.1 schwarze 48: enum roffscale unit;
49:
1.27 ! schwarze 50: scale = strtod(src, &endptr);
! 51: if (endptr == src || (endptr[0] != '\0' && endptr[1] != '\0'))
1.1 schwarze 52: return(0);
53:
1.27 ! schwarze 54: switch (*endptr) {
1.21 schwarze 55: case 'c':
1.1 schwarze 56: unit = SCALE_CM;
57: break;
1.21 schwarze 58: case 'i':
1.1 schwarze 59: unit = SCALE_IN;
60: break;
1.21 schwarze 61: case 'P':
1.1 schwarze 62: unit = SCALE_PC;
63: break;
1.21 schwarze 64: case 'p':
1.1 schwarze 65: unit = SCALE_PT;
66: break;
1.21 schwarze 67: case 'f':
1.1 schwarze 68: unit = SCALE_FS;
69: break;
1.21 schwarze 70: case 'v':
1.1 schwarze 71: unit = SCALE_VS;
72: break;
1.21 schwarze 73: case 'm':
1.1 schwarze 74: unit = SCALE_EM;
75: break;
1.21 schwarze 76: case '\0':
1.1 schwarze 77: if (SCALE_MAX == def)
78: return(0);
1.26 schwarze 79: unit = def;
1.1 schwarze 80: break;
1.21 schwarze 81: case 'u':
1.1 schwarze 82: unit = SCALE_BU;
83: break;
1.21 schwarze 84: case 'M':
1.1 schwarze 85: unit = SCALE_MM;
86: break;
1.21 schwarze 87: case 'n':
1.1 schwarze 88: unit = SCALE_EN;
89: break;
90: default:
91: return(0);
92: }
93:
1.6 schwarze 94: /* FIXME: do this in the caller. */
1.27 ! schwarze 95: if (scale < 0.0)
! 96: scale = 0.0;
! 97: dst->scale = scale;
1.1 schwarze 98: dst->unit = unit;
99: return(1);
1.3 schwarze 100: }
1.9 schwarze 101:
102: /*
103: * Calculate the abstract widths and decimal positions of columns in a
104: * table. This routine allocates the columns structures then runs over
105: * all rows and cells in the table. The function pointers in "tbl" are
106: * used for the actual width calculations.
107: */
108: void
1.24 schwarze 109: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
110: size_t totalwidth)
1.9 schwarze 111: {
112: const struct tbl_dat *dp;
113: struct roffcol *col;
1.24 schwarze 114: size_t ewidth, xwidth;
1.16 schwarze 115: int spans;
1.24 schwarze 116: int icol, maxcol, necol, nxcol;
1.9 schwarze 117:
118: /*
119: * Allocate the master column specifiers. These will hold the
120: * widths and decimal positions for all cells in the column. It
121: * must be freed and nullified by the caller.
122: */
123:
124: assert(NULL == tbl->cols);
1.21 schwarze 125: tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
126: sizeof(struct roffcol));
1.9 schwarze 127:
1.25 schwarze 128: for (maxcol = -1; sp; sp = sp->next) {
1.9 schwarze 129: if (TBL_SPAN_DATA != sp->pos)
130: continue;
1.16 schwarze 131: spans = 1;
1.9 schwarze 132: /*
133: * Account for the data cells in the layout, matching it
134: * to data cells in the data section.
135: */
136: for (dp = sp->first; dp; dp = dp->next) {
1.16 schwarze 137: /* Do not used spanned cells in the calculation. */
138: if (0 < --spans)
139: continue;
140: spans = dp->spans;
141: if (1 < spans)
142: continue;
1.24 schwarze 143: icol = dp->layout->head->ident;
144: if (maxcol < icol)
145: maxcol = icol;
146: col = tbl->cols + icol;
147: col->flags |= dp->layout->flags;
148: if (dp->layout->flags & TBL_CELL_WIGN)
149: continue;
1.18 schwarze 150: tblcalc_data(tbl, col, sp->opts, dp);
1.24 schwarze 151: }
152: }
153:
154: /*
155: * Count columns to equalize and columns to maximize.
156: * Find maximum width of the columns to equalize.
157: * Find total width of the columns *not* to maximize.
158: */
159:
160: necol = nxcol = 0;
161: ewidth = xwidth = 0;
162: for (icol = 0; icol <= maxcol; icol++) {
163: col = tbl->cols + icol;
164: if (col->flags & TBL_CELL_EQUAL) {
165: necol++;
166: if (ewidth < col->width)
167: ewidth = col->width;
168: }
169: if (col->flags & TBL_CELL_WMAX)
170: nxcol++;
171: else
172: xwidth += col->width;
173: }
174:
175: /*
176: * Equalize columns, if requested for any of them.
177: * Update total width of the columns not to maximize.
178: */
179:
180: if (necol) {
181: for (icol = 0; icol <= maxcol; icol++) {
182: col = tbl->cols + icol;
183: if ( ! (col->flags & TBL_CELL_EQUAL))
184: continue;
185: if (col->width == ewidth)
186: continue;
187: if (nxcol && totalwidth)
188: xwidth += ewidth - col->width;
189: col->width = ewidth;
190: }
191: }
192:
193: /*
194: * If there are any columns to maximize, find the total
195: * available width, deducting 3n margins between columns.
196: * Distribute the available width evenly.
197: */
198:
199: if (nxcol && totalwidth) {
200: xwidth = totalwidth - 3*maxcol - xwidth;
201: for (icol = 0; icol <= maxcol; icol++) {
202: col = tbl->cols + icol;
203: if ( ! (col->flags & TBL_CELL_WMAX))
204: continue;
205: col->width = xwidth / nxcol--;
206: xwidth -= col->width;
1.9 schwarze 207: }
208: }
209: }
210:
211: static void
212: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 213: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 214: {
215: size_t sz;
216:
217: /* Branch down into data sub-types. */
218:
219: switch (dp->layout->pos) {
1.21 schwarze 220: case TBL_CELL_HORIZ:
1.9 schwarze 221: /* FALLTHROUGH */
1.21 schwarze 222: case TBL_CELL_DHORIZ:
1.9 schwarze 223: sz = (*tbl->len)(1, tbl->arg);
224: if (col->width < sz)
225: col->width = sz;
226: break;
1.21 schwarze 227: case TBL_CELL_LONG:
1.9 schwarze 228: /* FALLTHROUGH */
1.21 schwarze 229: case TBL_CELL_CENTRE:
1.9 schwarze 230: /* FALLTHROUGH */
1.21 schwarze 231: case TBL_CELL_LEFT:
1.9 schwarze 232: /* FALLTHROUGH */
1.21 schwarze 233: case TBL_CELL_RIGHT:
1.9 schwarze 234: tblcalc_literal(tbl, col, dp);
235: break;
1.21 schwarze 236: case TBL_CELL_NUMBER:
1.18 schwarze 237: tblcalc_number(tbl, col, opts, dp);
1.9 schwarze 238: break;
1.21 schwarze 239: case TBL_CELL_DOWN:
1.10 schwarze 240: break;
1.9 schwarze 241: default:
242: abort();
243: /* NOTREACHED */
244: }
245: }
246:
247: static void
248: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
249: const struct tbl_dat *dp)
250: {
1.16 schwarze 251: size_t sz;
1.10 schwarze 252: const char *str;
1.9 schwarze 253:
1.10 schwarze 254: str = dp->string ? dp->string : "";
255: sz = (*tbl->slen)(str, tbl->arg);
256:
1.9 schwarze 257: if (col->width < sz)
258: col->width = sz;
259: }
260:
261: static void
262: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 263: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 264: {
1.21 schwarze 265: int i;
1.10 schwarze 266: size_t sz, psz, ssz, d;
267: const char *str;
1.9 schwarze 268: char *cp;
269: char buf[2];
270:
271: /*
272: * First calculate number width and decimal place (last + 1 for
1.16 schwarze 273: * non-decimal numbers). If the stored decimal is subsequent to
1.9 schwarze 274: * ours, make our size longer by that difference
275: * (right-"shifting"); similarly, if ours is subsequent the
276: * stored, then extend the stored size by the difference.
277: * Finally, re-assign the stored values.
278: */
279:
1.10 schwarze 280: str = dp->string ? dp->string : "";
281: sz = (*tbl->slen)(str, tbl->arg);
1.9 schwarze 282:
1.10 schwarze 283: /* FIXME: TBL_DATA_HORIZ et al.? */
1.9 schwarze 284:
1.18 schwarze 285: buf[0] = opts->decimal;
1.9 schwarze 286: buf[1] = '\0';
287:
288: psz = (*tbl->slen)(buf, tbl->arg);
289:
1.18 schwarze 290: if (NULL != (cp = strrchr(str, opts->decimal))) {
1.9 schwarze 291: buf[1] = '\0';
292: for (ssz = 0, i = 0; cp != &str[i]; i++) {
293: buf[0] = str[i];
294: ssz += (*tbl->slen)(buf, tbl->arg);
295: }
296: d = ssz + psz;
297: } else
298: d = sz + psz;
299:
300: /* Adjust the settings for this column. */
301:
302: if (col->decimal > d) {
303: sz += col->decimal - d;
304: d = col->decimal;
305: } else
306: col->width += d - col->decimal;
307:
308: if (sz > col->width)
309: col->width = sz;
310: if (d > col->decimal)
311: col->decimal = d;
312: }
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