Annotation of src/usr.bin/mandoc/out.c, Revision 1.26
1.26 ! schwarze 1: /* $OpenBSD: out.c,v 1.25 2014/10/14 18:16:57 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 <ctype.h>
22: #include <stdio.h>
23: #include <stdlib.h>
1.2 schwarze 24: #include <string.h>
25: #include <time.h>
1.1 schwarze 26:
1.20 schwarze 27: #include "mandoc_aux.h"
1.9 schwarze 28: #include "mandoc.h"
1.1 schwarze 29: #include "out.h"
30:
1.9 schwarze 31: static void tblcalc_data(struct rofftbl *, struct roffcol *,
1.18 schwarze 32: const struct tbl_opts *, const struct tbl_dat *);
1.9 schwarze 33: static void tblcalc_literal(struct rofftbl *, struct roffcol *,
34: const struct tbl_dat *);
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: /*
1.1 schwarze 40: * Convert a `scaling unit' to a consistent form, or fail. Scaling
41: * units are documented in groff.7, mdoc.7, man.7.
42: */
43: int
44: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
45: {
46: char buf[BUFSIZ], hasd;
47: int i;
48: enum roffscale unit;
49:
50: if ('\0' == *src)
51: return(0);
52:
53: i = hasd = 0;
54:
55: switch (*src) {
1.21 schwarze 56: case '+':
1.1 schwarze 57: src++;
58: break;
1.21 schwarze 59: case '-':
1.1 schwarze 60: buf[i++] = *src++;
61: break;
62: default:
63: break;
64: }
65:
66: if ('\0' == *src)
67: return(0);
68:
69: while (i < BUFSIZ) {
1.15 schwarze 70: if ( ! isdigit((unsigned char)*src)) {
1.1 schwarze 71: if ('.' != *src)
72: break;
73: else if (hasd)
74: break;
75: else
76: hasd = 1;
77: }
78: buf[i++] = *src++;
79: }
80:
81: if (BUFSIZ == i || (*src && *(src + 1)))
82: return(0);
83:
84: buf[i] = '\0';
85:
86: switch (*src) {
1.21 schwarze 87: case 'c':
1.1 schwarze 88: unit = SCALE_CM;
89: break;
1.21 schwarze 90: case 'i':
1.1 schwarze 91: unit = SCALE_IN;
92: break;
1.21 schwarze 93: case 'P':
1.1 schwarze 94: unit = SCALE_PC;
95: break;
1.21 schwarze 96: case 'p':
1.1 schwarze 97: unit = SCALE_PT;
98: break;
1.21 schwarze 99: case 'f':
1.1 schwarze 100: unit = SCALE_FS;
101: break;
1.21 schwarze 102: case 'v':
1.1 schwarze 103: unit = SCALE_VS;
104: break;
1.21 schwarze 105: case 'm':
1.1 schwarze 106: unit = SCALE_EM;
107: break;
1.21 schwarze 108: case '\0':
1.1 schwarze 109: if (SCALE_MAX == def)
110: return(0);
1.26 ! schwarze 111: unit = def;
1.1 schwarze 112: break;
1.21 schwarze 113: case 'u':
1.1 schwarze 114: unit = SCALE_BU;
115: break;
1.21 schwarze 116: case 'M':
1.1 schwarze 117: unit = SCALE_MM;
118: break;
1.21 schwarze 119: case 'n':
1.1 schwarze 120: unit = SCALE_EN;
121: break;
122: default:
123: return(0);
124: }
125:
1.6 schwarze 126: /* FIXME: do this in the caller. */
1.22 schwarze 127: if ((dst->scale = atof(buf)) < 0.0)
128: dst->scale = 0.0;
1.1 schwarze 129: dst->unit = unit;
130: return(1);
1.3 schwarze 131: }
1.9 schwarze 132:
133: /*
134: * Calculate the abstract widths and decimal positions of columns in a
135: * table. This routine allocates the columns structures then runs over
136: * all rows and cells in the table. The function pointers in "tbl" are
137: * used for the actual width calculations.
138: */
139: void
1.24 schwarze 140: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
141: size_t totalwidth)
1.9 schwarze 142: {
143: const struct tbl_dat *dp;
144: struct roffcol *col;
1.24 schwarze 145: size_t ewidth, xwidth;
1.16 schwarze 146: int spans;
1.24 schwarze 147: int icol, maxcol, necol, nxcol;
1.9 schwarze 148:
149: /*
150: * Allocate the master column specifiers. These will hold the
151: * widths and decimal positions for all cells in the column. It
152: * must be freed and nullified by the caller.
153: */
154:
155: assert(NULL == tbl->cols);
1.21 schwarze 156: tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
157: sizeof(struct roffcol));
1.9 schwarze 158:
1.25 schwarze 159: for (maxcol = -1; sp; sp = sp->next) {
1.9 schwarze 160: if (TBL_SPAN_DATA != sp->pos)
161: continue;
1.16 schwarze 162: spans = 1;
1.9 schwarze 163: /*
164: * Account for the data cells in the layout, matching it
165: * to data cells in the data section.
166: */
167: for (dp = sp->first; dp; dp = dp->next) {
1.16 schwarze 168: /* Do not used spanned cells in the calculation. */
169: if (0 < --spans)
170: continue;
171: spans = dp->spans;
172: if (1 < spans)
173: continue;
1.24 schwarze 174: icol = dp->layout->head->ident;
175: if (maxcol < icol)
176: maxcol = icol;
177: col = tbl->cols + icol;
178: col->flags |= dp->layout->flags;
179: if (dp->layout->flags & TBL_CELL_WIGN)
180: continue;
1.18 schwarze 181: tblcalc_data(tbl, col, sp->opts, dp);
1.24 schwarze 182: }
183: }
184:
185: /*
186: * Count columns to equalize and columns to maximize.
187: * Find maximum width of the columns to equalize.
188: * Find total width of the columns *not* to maximize.
189: */
190:
191: necol = nxcol = 0;
192: ewidth = xwidth = 0;
193: for (icol = 0; icol <= maxcol; icol++) {
194: col = tbl->cols + icol;
195: if (col->flags & TBL_CELL_EQUAL) {
196: necol++;
197: if (ewidth < col->width)
198: ewidth = col->width;
199: }
200: if (col->flags & TBL_CELL_WMAX)
201: nxcol++;
202: else
203: xwidth += col->width;
204: }
205:
206: /*
207: * Equalize columns, if requested for any of them.
208: * Update total width of the columns not to maximize.
209: */
210:
211: if (necol) {
212: for (icol = 0; icol <= maxcol; icol++) {
213: col = tbl->cols + icol;
214: if ( ! (col->flags & TBL_CELL_EQUAL))
215: continue;
216: if (col->width == ewidth)
217: continue;
218: if (nxcol && totalwidth)
219: xwidth += ewidth - col->width;
220: col->width = ewidth;
221: }
222: }
223:
224: /*
225: * If there are any columns to maximize, find the total
226: * available width, deducting 3n margins between columns.
227: * Distribute the available width evenly.
228: */
229:
230: if (nxcol && totalwidth) {
231: xwidth = totalwidth - 3*maxcol - xwidth;
232: for (icol = 0; icol <= maxcol; icol++) {
233: col = tbl->cols + icol;
234: if ( ! (col->flags & TBL_CELL_WMAX))
235: continue;
236: col->width = xwidth / nxcol--;
237: xwidth -= col->width;
1.9 schwarze 238: }
239: }
240: }
241:
242: static void
243: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 244: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 245: {
246: size_t sz;
247:
248: /* Branch down into data sub-types. */
249:
250: switch (dp->layout->pos) {
1.21 schwarze 251: case TBL_CELL_HORIZ:
1.9 schwarze 252: /* FALLTHROUGH */
1.21 schwarze 253: case TBL_CELL_DHORIZ:
1.9 schwarze 254: sz = (*tbl->len)(1, tbl->arg);
255: if (col->width < sz)
256: col->width = sz;
257: break;
1.21 schwarze 258: case TBL_CELL_LONG:
1.9 schwarze 259: /* FALLTHROUGH */
1.21 schwarze 260: case TBL_CELL_CENTRE:
1.9 schwarze 261: /* FALLTHROUGH */
1.21 schwarze 262: case TBL_CELL_LEFT:
1.9 schwarze 263: /* FALLTHROUGH */
1.21 schwarze 264: case TBL_CELL_RIGHT:
1.9 schwarze 265: tblcalc_literal(tbl, col, dp);
266: break;
1.21 schwarze 267: case TBL_CELL_NUMBER:
1.18 schwarze 268: tblcalc_number(tbl, col, opts, dp);
1.9 schwarze 269: break;
1.21 schwarze 270: case TBL_CELL_DOWN:
1.10 schwarze 271: break;
1.9 schwarze 272: default:
273: abort();
274: /* NOTREACHED */
275: }
276: }
277:
278: static void
279: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
280: const struct tbl_dat *dp)
281: {
1.16 schwarze 282: size_t sz;
1.10 schwarze 283: const char *str;
1.9 schwarze 284:
1.10 schwarze 285: str = dp->string ? dp->string : "";
286: sz = (*tbl->slen)(str, tbl->arg);
287:
1.9 schwarze 288: if (col->width < sz)
289: col->width = sz;
290: }
291:
292: static void
293: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.18 schwarze 294: const struct tbl_opts *opts, const struct tbl_dat *dp)
1.9 schwarze 295: {
1.21 schwarze 296: int i;
1.10 schwarze 297: size_t sz, psz, ssz, d;
298: const char *str;
1.9 schwarze 299: char *cp;
300: char buf[2];
301:
302: /*
303: * First calculate number width and decimal place (last + 1 for
1.16 schwarze 304: * non-decimal numbers). If the stored decimal is subsequent to
1.9 schwarze 305: * ours, make our size longer by that difference
306: * (right-"shifting"); similarly, if ours is subsequent the
307: * stored, then extend the stored size by the difference.
308: * Finally, re-assign the stored values.
309: */
310:
1.10 schwarze 311: str = dp->string ? dp->string : "";
312: sz = (*tbl->slen)(str, tbl->arg);
1.9 schwarze 313:
1.10 schwarze 314: /* FIXME: TBL_DATA_HORIZ et al.? */
1.9 schwarze 315:
1.18 schwarze 316: buf[0] = opts->decimal;
1.9 schwarze 317: buf[1] = '\0';
318:
319: psz = (*tbl->slen)(buf, tbl->arg);
320:
1.18 schwarze 321: if (NULL != (cp = strrchr(str, opts->decimal))) {
1.9 schwarze 322: buf[1] = '\0';
323: for (ssz = 0, i = 0; cp != &str[i]; i++) {
324: buf[0] = str[i];
325: ssz += (*tbl->slen)(buf, tbl->arg);
326: }
327: d = ssz + psz;
328: } else
329: d = sz + psz;
330:
331: /* Adjust the settings for this column. */
332:
333: if (col->decimal > d) {
334: sz += col->decimal - d;
335: d = col->decimal;
336: } else
337: col->width += d - col->decimal;
338:
339: if (sz > col->width)
340: col->width = sz;
341: if (d > col->decimal)
342: col->decimal = d;
343: }
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