Annotation of mandoc/out.c, Revision 1.56
1.56 ! schwarze 1: /* $Id: out.c,v 1.55 2014/12/23 03:28:01 schwarze Exp $ */
1.1 kristaps 2: /*
1.36 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.52 schwarze 4: * Copyright (c) 2011, 2014 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: #include "config.h"
19:
1.1 kristaps 20: #include <sys/types.h>
21:
1.6 kristaps 22: #include <assert.h>
1.1 kristaps 23: #include <stdlib.h>
1.6 kristaps 24: #include <string.h>
1.7 kristaps 25: #include <time.h>
1.1 kristaps 26:
1.47 schwarze 27: #include "mandoc_aux.h"
1.30 kristaps 28: #include "mandoc.h"
1.1 kristaps 29: #include "out.h"
30:
1.30 kristaps 31: static void tblcalc_data(struct rofftbl *, struct roffcol *,
1.45 schwarze 32: const struct tbl_opts *, const struct tbl_dat *);
1.30 kristaps 33: static void tblcalc_literal(struct rofftbl *, struct roffcol *,
34: const struct tbl_dat *);
35: static void tblcalc_number(struct rofftbl *, struct roffcol *,
1.45 schwarze 36: const struct tbl_opts *, const struct tbl_dat *);
1.30 kristaps 37:
1.48 schwarze 38:
39: /*
1.55 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.
1.56 ! schwarze 43: * Return 2 on complete success, 1 when a conversion was done,
! 44: * but there was trailing garbage, and 0 on total failure.
1.3 kristaps 45: */
1.1 kristaps 46: int
1.5 kristaps 47: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
1.1 kristaps 48: {
1.55 schwarze 49: char *endptr;
1.1 kristaps 50:
1.56 ! schwarze 51: dst->unit = def == SCALE_MAX ? SCALE_BU : def;
! 52: dst->scale = strtod(src, &endptr);
! 53: if (endptr == src)
1.5 kristaps 54: return(0);
55:
1.56 ! schwarze 56: switch (*endptr++) {
1.48 schwarze 57: case 'c':
1.56 ! schwarze 58: dst->unit = SCALE_CM;
1.3 kristaps 59: break;
1.48 schwarze 60: case 'i':
1.56 ! 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;
1.3 kristaps 74: break;
1.48 schwarze 75: case 'P':
1.56 ! schwarze 76: dst->unit = SCALE_PC;
1.3 kristaps 77: break;
1.48 schwarze 78: case 'p':
1.56 ! schwarze 79: dst->unit = SCALE_PT;
1.3 kristaps 80: break;
1.56 ! schwarze 81: case 'u':
! 82: dst->unit = SCALE_BU;
1.3 kristaps 83: break;
1.48 schwarze 84: case 'v':
1.56 ! schwarze 85: dst->unit = SCALE_VS;
1.3 kristaps 86: break;
1.48 schwarze 87: case '\0':
1.56 ! schwarze 88: endptr--;
! 89: /* FALLTHROUGH */
! 90: default:
1.5 kristaps 91: if (SCALE_MAX == def)
92: return(0);
1.56 ! schwarze 93: dst->unit = def;
1.3 kristaps 94: break;
95: }
1.1 kristaps 96:
1.23 kristaps 97: /* FIXME: do this in the caller. */
1.56 ! schwarze 98: if (dst->scale < 0.0)
! 99: dst->scale = 0.0;
! 100: return(*endptr == '\0' ? 2 : 1);
1.8 kristaps 101: }
1.30 kristaps 102:
103: /*
104: * Calculate the abstract widths and decimal positions of columns in a
105: * table. This routine allocates the columns structures then runs over
106: * all rows and cells in the table. The function pointers in "tbl" are
107: * used for the actual width calculations.
108: */
109: void
1.52 schwarze 110: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
111: size_t totalwidth)
1.30 kristaps 112: {
113: const struct tbl_dat *dp;
114: struct roffcol *col;
1.52 schwarze 115: size_t ewidth, xwidth;
1.43 schwarze 116: int spans;
1.52 schwarze 117: int icol, maxcol, necol, nxcol;
1.30 kristaps 118:
119: /*
120: * Allocate the master column specifiers. These will hold the
121: * widths and decimal positions for all cells in the column. It
122: * must be freed and nullified by the caller.
123: */
124:
125: assert(NULL == tbl->cols);
1.48 schwarze 126: tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
127: sizeof(struct roffcol));
1.30 kristaps 128:
1.53 schwarze 129: for (maxcol = -1; sp; sp = sp->next) {
1.30 kristaps 130: if (TBL_SPAN_DATA != sp->pos)
131: continue;
1.43 schwarze 132: spans = 1;
1.30 kristaps 133: /*
134: * Account for the data cells in the layout, matching it
135: * to data cells in the data section.
136: */
137: for (dp = sp->first; dp; dp = dp->next) {
1.43 schwarze 138: /* Do not used spanned cells in the calculation. */
139: if (0 < --spans)
140: continue;
141: spans = dp->spans;
142: if (1 < spans)
143: continue;
1.52 schwarze 144: icol = dp->layout->head->ident;
145: if (maxcol < icol)
146: maxcol = icol;
147: col = tbl->cols + icol;
148: col->flags |= dp->layout->flags;
149: if (dp->layout->flags & TBL_CELL_WIGN)
150: continue;
1.45 schwarze 151: tblcalc_data(tbl, col, sp->opts, dp);
1.52 schwarze 152: }
153: }
154:
155: /*
156: * Count columns to equalize and columns to maximize.
157: * Find maximum width of the columns to equalize.
158: * Find total width of the columns *not* to maximize.
159: */
160:
161: necol = nxcol = 0;
162: ewidth = xwidth = 0;
163: for (icol = 0; icol <= maxcol; icol++) {
164: col = tbl->cols + icol;
165: if (col->flags & TBL_CELL_EQUAL) {
166: necol++;
167: if (ewidth < col->width)
168: ewidth = col->width;
169: }
170: if (col->flags & TBL_CELL_WMAX)
171: nxcol++;
172: else
173: xwidth += col->width;
174: }
175:
176: /*
177: * Equalize columns, if requested for any of them.
178: * Update total width of the columns not to maximize.
179: */
180:
181: if (necol) {
182: for (icol = 0; icol <= maxcol; icol++) {
183: col = tbl->cols + icol;
184: if ( ! (col->flags & TBL_CELL_EQUAL))
185: continue;
186: if (col->width == ewidth)
187: continue;
188: if (nxcol && totalwidth)
189: xwidth += ewidth - col->width;
190: col->width = ewidth;
191: }
192: }
193:
194: /*
195: * If there are any columns to maximize, find the total
196: * available width, deducting 3n margins between columns.
197: * Distribute the available width evenly.
198: */
199:
200: if (nxcol && totalwidth) {
201: xwidth = totalwidth - 3*maxcol - xwidth;
202: for (icol = 0; icol <= maxcol; icol++) {
203: col = tbl->cols + icol;
204: if ( ! (col->flags & TBL_CELL_WMAX))
205: continue;
206: col->width = xwidth / nxcol--;
207: xwidth -= col->width;
1.30 kristaps 208: }
209: }
210: }
211:
212: static void
213: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.45 schwarze 214: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.30 kristaps 215: {
216: size_t sz;
217:
218: /* Branch down into data sub-types. */
219:
220: switch (dp->layout->pos) {
1.48 schwarze 221: case TBL_CELL_HORIZ:
1.30 kristaps 222: /* FALLTHROUGH */
1.48 schwarze 223: case TBL_CELL_DHORIZ:
1.30 kristaps 224: sz = (*tbl->len)(1, tbl->arg);
225: if (col->width < sz)
226: col->width = sz;
227: break;
1.48 schwarze 228: case TBL_CELL_LONG:
1.30 kristaps 229: /* FALLTHROUGH */
1.48 schwarze 230: case TBL_CELL_CENTRE:
1.30 kristaps 231: /* FALLTHROUGH */
1.48 schwarze 232: case TBL_CELL_LEFT:
1.30 kristaps 233: /* FALLTHROUGH */
1.48 schwarze 234: case TBL_CELL_RIGHT:
1.30 kristaps 235: tblcalc_literal(tbl, col, dp);
236: break;
1.48 schwarze 237: case TBL_CELL_NUMBER:
1.45 schwarze 238: tblcalc_number(tbl, col, opts, dp);
1.35 kristaps 239: break;
1.48 schwarze 240: case TBL_CELL_DOWN:
1.30 kristaps 241: break;
242: default:
243: abort();
244: /* NOTREACHED */
245: }
246: }
247:
248: static void
249: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
250: const struct tbl_dat *dp)
251: {
1.43 schwarze 252: size_t sz;
1.34 kristaps 253: const char *str;
1.30 kristaps 254:
1.34 kristaps 255: str = dp->string ? dp->string : "";
256: sz = (*tbl->slen)(str, tbl->arg);
257:
1.30 kristaps 258: if (col->width < sz)
259: col->width = sz;
260: }
261:
262: static void
263: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.45 schwarze 264: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.30 kristaps 265: {
1.48 schwarze 266: int i;
1.34 kristaps 267: size_t sz, psz, ssz, d;
268: const char *str;
1.30 kristaps 269: char *cp;
270: char buf[2];
271:
272: /*
273: * First calculate number width and decimal place (last + 1 for
1.43 schwarze 274: * non-decimal numbers). If the stored decimal is subsequent to
1.30 kristaps 275: * ours, make our size longer by that difference
276: * (right-"shifting"); similarly, if ours is subsequent the
277: * stored, then extend the stored size by the difference.
278: * Finally, re-assign the stored values.
279: */
280:
1.34 kristaps 281: str = dp->string ? dp->string : "";
282: sz = (*tbl->slen)(str, tbl->arg);
1.30 kristaps 283:
1.34 kristaps 284: /* FIXME: TBL_DATA_HORIZ et al.? */
1.30 kristaps 285:
1.45 schwarze 286: buf[0] = opts->decimal;
1.30 kristaps 287: buf[1] = '\0';
288:
289: psz = (*tbl->slen)(buf, tbl->arg);
290:
1.45 schwarze 291: if (NULL != (cp = strrchr(str, opts->decimal))) {
1.30 kristaps 292: buf[1] = '\0';
293: for (ssz = 0, i = 0; cp != &str[i]; i++) {
294: buf[0] = str[i];
295: ssz += (*tbl->slen)(buf, tbl->arg);
296: }
297: d = ssz + psz;
298: } else
299: d = sz + psz;
300:
301: /* Adjust the settings for this column. */
302:
303: if (col->decimal > d) {
304: sz += col->decimal - d;
305: d = col->decimal;
306: } else
307: col->width += d - col->decimal;
308:
309: if (sz > col->width)
310: col->width = sz;
311: if (d > col->decimal)
312: col->decimal = d;
313: }
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