Annotation of mandoc/out.c, Revision 1.53
1.53 ! schwarze 1: /* $Id: out.c,v 1.52 2014/10/14 02:16:06 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 <ctype.h>
1.3 kristaps 24: #include <stdio.h>
1.1 kristaps 25: #include <stdlib.h>
1.6 kristaps 26: #include <string.h>
1.7 kristaps 27: #include <time.h>
1.1 kristaps 28:
1.47 schwarze 29: #include "mandoc_aux.h"
1.30 kristaps 30: #include "mandoc.h"
1.1 kristaps 31: #include "out.h"
32:
1.30 kristaps 33: static void tblcalc_data(struct rofftbl *, struct roffcol *,
1.45 schwarze 34: const struct tbl_opts *, const struct tbl_dat *);
1.30 kristaps 35: static void tblcalc_literal(struct rofftbl *, struct roffcol *,
36: const struct tbl_dat *);
37: static void tblcalc_number(struct rofftbl *, struct roffcol *,
1.45 schwarze 38: const struct tbl_opts *, const struct tbl_dat *);
1.30 kristaps 39:
1.48 schwarze 40:
41: /*
1.3 kristaps 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) {
1.48 schwarze 58: case '+':
1.4 kristaps 59: src++;
60: break;
1.48 schwarze 61: case '-':
1.4 kristaps 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) {
1.42 kristaps 72: if ( ! isdigit((unsigned char)*src)) {
1.4 kristaps 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) {
1.48 schwarze 89: case 'c':
1.3 kristaps 90: unit = SCALE_CM;
91: break;
1.48 schwarze 92: case 'i':
1.3 kristaps 93: unit = SCALE_IN;
94: break;
1.48 schwarze 95: case 'P':
1.3 kristaps 96: unit = SCALE_PC;
97: break;
1.48 schwarze 98: case 'p':
1.3 kristaps 99: unit = SCALE_PT;
100: break;
1.48 schwarze 101: case 'f':
1.3 kristaps 102: unit = SCALE_FS;
103: break;
1.48 schwarze 104: case 'v':
1.3 kristaps 105: unit = SCALE_VS;
106: break;
1.48 schwarze 107: case 'm':
1.3 kristaps 108: unit = SCALE_EM;
109: break;
1.48 schwarze 110: case '\0':
1.5 kristaps 111: if (SCALE_MAX == def)
112: return(0);
1.51 schwarze 113: unit = SCALE_EN;
1.5 kristaps 114: break;
1.48 schwarze 115: case 'u':
1.3 kristaps 116: unit = SCALE_BU;
117: break;
1.48 schwarze 118: case 'M':
1.3 kristaps 119: unit = SCALE_MM;
120: break;
1.48 schwarze 121: case 'n':
1.3 kristaps 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. */
1.49 schwarze 129: if ((dst->scale = atof(buf)) < 0.0)
130: dst->scale = 0.0;
1.3 kristaps 131: dst->unit = unit;
132: return(1);
1.8 kristaps 133: }
1.30 kristaps 134:
135: /*
136: * Calculate the abstract widths and decimal positions of columns in a
137: * table. This routine allocates the columns structures then runs over
138: * all rows and cells in the table. The function pointers in "tbl" are
139: * used for the actual width calculations.
140: */
141: void
1.52 schwarze 142: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
143: size_t totalwidth)
1.30 kristaps 144: {
145: const struct tbl_dat *dp;
146: struct roffcol *col;
1.52 schwarze 147: size_t ewidth, xwidth;
1.43 schwarze 148: int spans;
1.52 schwarze 149: int icol, maxcol, necol, nxcol;
1.30 kristaps 150:
151: /*
152: * Allocate the master column specifiers. These will hold the
153: * widths and decimal positions for all cells in the column. It
154: * must be freed and nullified by the caller.
155: */
156:
157: assert(NULL == tbl->cols);
1.48 schwarze 158: tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
159: sizeof(struct roffcol));
1.30 kristaps 160:
1.53 ! schwarze 161: for (maxcol = -1; sp; sp = sp->next) {
1.30 kristaps 162: if (TBL_SPAN_DATA != sp->pos)
163: continue;
1.43 schwarze 164: spans = 1;
1.30 kristaps 165: /*
166: * Account for the data cells in the layout, matching it
167: * to data cells in the data section.
168: */
169: for (dp = sp->first; dp; dp = dp->next) {
1.43 schwarze 170: /* Do not used spanned cells in the calculation. */
171: if (0 < --spans)
172: continue;
173: spans = dp->spans;
174: if (1 < spans)
175: continue;
1.52 schwarze 176: icol = dp->layout->head->ident;
177: if (maxcol < icol)
178: maxcol = icol;
179: col = tbl->cols + icol;
180: col->flags |= dp->layout->flags;
181: if (dp->layout->flags & TBL_CELL_WIGN)
182: continue;
1.45 schwarze 183: tblcalc_data(tbl, col, sp->opts, dp);
1.52 schwarze 184: }
185: }
186:
187: /*
188: * Count columns to equalize and columns to maximize.
189: * Find maximum width of the columns to equalize.
190: * Find total width of the columns *not* to maximize.
191: */
192:
193: necol = nxcol = 0;
194: ewidth = xwidth = 0;
195: for (icol = 0; icol <= maxcol; icol++) {
196: col = tbl->cols + icol;
197: if (col->flags & TBL_CELL_EQUAL) {
198: necol++;
199: if (ewidth < col->width)
200: ewidth = col->width;
201: }
202: if (col->flags & TBL_CELL_WMAX)
203: nxcol++;
204: else
205: xwidth += col->width;
206: }
207:
208: /*
209: * Equalize columns, if requested for any of them.
210: * Update total width of the columns not to maximize.
211: */
212:
213: if (necol) {
214: for (icol = 0; icol <= maxcol; icol++) {
215: col = tbl->cols + icol;
216: if ( ! (col->flags & TBL_CELL_EQUAL))
217: continue;
218: if (col->width == ewidth)
219: continue;
220: if (nxcol && totalwidth)
221: xwidth += ewidth - col->width;
222: col->width = ewidth;
223: }
224: }
225:
226: /*
227: * If there are any columns to maximize, find the total
228: * available width, deducting 3n margins between columns.
229: * Distribute the available width evenly.
230: */
231:
232: if (nxcol && totalwidth) {
233: xwidth = totalwidth - 3*maxcol - xwidth;
234: for (icol = 0; icol <= maxcol; icol++) {
235: col = tbl->cols + icol;
236: if ( ! (col->flags & TBL_CELL_WMAX))
237: continue;
238: col->width = xwidth / nxcol--;
239: xwidth -= col->width;
1.30 kristaps 240: }
241: }
242: }
243:
244: static void
245: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.45 schwarze 246: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.30 kristaps 247: {
248: size_t sz;
249:
250: /* Branch down into data sub-types. */
251:
252: switch (dp->layout->pos) {
1.48 schwarze 253: case TBL_CELL_HORIZ:
1.30 kristaps 254: /* FALLTHROUGH */
1.48 schwarze 255: case TBL_CELL_DHORIZ:
1.30 kristaps 256: sz = (*tbl->len)(1, tbl->arg);
257: if (col->width < sz)
258: col->width = sz;
259: break;
1.48 schwarze 260: case TBL_CELL_LONG:
1.30 kristaps 261: /* FALLTHROUGH */
1.48 schwarze 262: case TBL_CELL_CENTRE:
1.30 kristaps 263: /* FALLTHROUGH */
1.48 schwarze 264: case TBL_CELL_LEFT:
1.30 kristaps 265: /* FALLTHROUGH */
1.48 schwarze 266: case TBL_CELL_RIGHT:
1.30 kristaps 267: tblcalc_literal(tbl, col, dp);
268: break;
1.48 schwarze 269: case TBL_CELL_NUMBER:
1.45 schwarze 270: tblcalc_number(tbl, col, opts, dp);
1.35 kristaps 271: break;
1.48 schwarze 272: case TBL_CELL_DOWN:
1.30 kristaps 273: break;
274: default:
275: abort();
276: /* NOTREACHED */
277: }
278: }
279:
280: static void
281: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
282: const struct tbl_dat *dp)
283: {
1.43 schwarze 284: size_t sz;
1.34 kristaps 285: const char *str;
1.30 kristaps 286:
1.34 kristaps 287: str = dp->string ? dp->string : "";
288: sz = (*tbl->slen)(str, tbl->arg);
289:
1.30 kristaps 290: if (col->width < sz)
291: col->width = sz;
292: }
293:
294: static void
295: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.45 schwarze 296: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.30 kristaps 297: {
1.48 schwarze 298: int i;
1.34 kristaps 299: size_t sz, psz, ssz, d;
300: const char *str;
1.30 kristaps 301: char *cp;
302: char buf[2];
303:
304: /*
305: * First calculate number width and decimal place (last + 1 for
1.43 schwarze 306: * non-decimal numbers). If the stored decimal is subsequent to
1.30 kristaps 307: * ours, make our size longer by that difference
308: * (right-"shifting"); similarly, if ours is subsequent the
309: * stored, then extend the stored size by the difference.
310: * Finally, re-assign the stored values.
311: */
312:
1.34 kristaps 313: str = dp->string ? dp->string : "";
314: sz = (*tbl->slen)(str, tbl->arg);
1.30 kristaps 315:
1.34 kristaps 316: /* FIXME: TBL_DATA_HORIZ et al.? */
1.30 kristaps 317:
1.45 schwarze 318: buf[0] = opts->decimal;
1.30 kristaps 319: buf[1] = '\0';
320:
321: psz = (*tbl->slen)(buf, tbl->arg);
322:
1.45 schwarze 323: if (NULL != (cp = strrchr(str, opts->decimal))) {
1.30 kristaps 324: buf[1] = '\0';
325: for (ssz = 0, i = 0; cp != &str[i]; i++) {
326: buf[0] = str[i];
327: ssz += (*tbl->slen)(buf, tbl->arg);
328: }
329: d = ssz + psz;
330: } else
331: d = sz + psz;
332:
333: /* Adjust the settings for this column. */
334:
335: if (col->decimal > d) {
336: sz += col->decimal - d;
337: d = col->decimal;
338: } else
339: col->width += d - col->decimal;
340:
341: if (sz > col->width)
342: col->width = sz;
343: if (d > col->decimal)
344: col->decimal = d;
345: }
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