304 lines
6.5 KiB
C
304 lines
6.5 KiB
C
/* $Id: out.c,v 1.43 2011/09/20 23:05:49 schwarze Exp $ */
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/*
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* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "mandoc.h"
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#include "out.h"
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static void tblcalc_data(struct rofftbl *, struct roffcol *,
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const struct tbl *, const struct tbl_dat *);
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static void tblcalc_literal(struct rofftbl *, struct roffcol *,
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const struct tbl_dat *);
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static void tblcalc_number(struct rofftbl *, struct roffcol *,
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const struct tbl *, const struct tbl_dat *);
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/*
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* Convert a `scaling unit' to a consistent form, or fail. Scaling
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* units are documented in groff.7, mdoc.7, man.7.
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*/
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int
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a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
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{
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char buf[BUFSIZ], hasd;
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int i;
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enum roffscale unit;
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if ('\0' == *src)
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return(0);
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i = hasd = 0;
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switch (*src) {
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case ('+'):
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src++;
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break;
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case ('-'):
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buf[i++] = *src++;
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break;
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default:
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break;
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}
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if ('\0' == *src)
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return(0);
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while (i < BUFSIZ) {
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if ( ! isdigit((unsigned char)*src)) {
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if ('.' != *src)
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break;
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else if (hasd)
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break;
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else
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hasd = 1;
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}
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buf[i++] = *src++;
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}
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if (BUFSIZ == i || (*src && *(src + 1)))
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return(0);
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buf[i] = '\0';
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switch (*src) {
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case ('c'):
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unit = SCALE_CM;
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break;
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case ('i'):
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unit = SCALE_IN;
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break;
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case ('P'):
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unit = SCALE_PC;
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break;
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case ('p'):
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unit = SCALE_PT;
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break;
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case ('f'):
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unit = SCALE_FS;
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break;
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case ('v'):
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unit = SCALE_VS;
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break;
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case ('m'):
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unit = SCALE_EM;
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break;
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case ('\0'):
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if (SCALE_MAX == def)
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return(0);
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unit = SCALE_BU;
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break;
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case ('u'):
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unit = SCALE_BU;
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break;
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case ('M'):
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unit = SCALE_MM;
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break;
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case ('n'):
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unit = SCALE_EN;
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break;
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default:
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return(0);
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}
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/* FIXME: do this in the caller. */
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if ((dst->scale = atof(buf)) < 0)
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dst->scale = 0;
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dst->unit = unit;
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return(1);
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}
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/*
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* Calculate the abstract widths and decimal positions of columns in a
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* table. This routine allocates the columns structures then runs over
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* all rows and cells in the table. The function pointers in "tbl" are
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* used for the actual width calculations.
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*/
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void
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tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
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{
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const struct tbl_dat *dp;
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const struct tbl_head *hp;
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struct roffcol *col;
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int spans;
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/*
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* Allocate the master column specifiers. These will hold the
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* widths and decimal positions for all cells in the column. It
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* must be freed and nullified by the caller.
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*/
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assert(NULL == tbl->cols);
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tbl->cols = mandoc_calloc
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((size_t)sp->tbl->cols, sizeof(struct roffcol));
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hp = sp->head;
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for ( ; sp; sp = sp->next) {
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if (TBL_SPAN_DATA != sp->pos)
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continue;
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spans = 1;
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/*
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* Account for the data cells in the layout, matching it
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* to data cells in the data section.
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*/
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for (dp = sp->first; dp; dp = dp->next) {
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/* Do not used spanned cells in the calculation. */
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if (0 < --spans)
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continue;
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spans = dp->spans;
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if (1 < spans)
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continue;
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assert(dp->layout);
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col = &tbl->cols[dp->layout->head->ident];
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tblcalc_data(tbl, col, sp->tbl, dp);
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}
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}
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/*
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* Calculate width of the spanners. These get one space for a
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* vertical line, two for a double-vertical line.
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*/
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for ( ; hp; hp = hp->next) {
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col = &tbl->cols[hp->ident];
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switch (hp->pos) {
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case (TBL_HEAD_VERT):
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col->width = (*tbl->len)(1, tbl->arg);
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break;
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case (TBL_HEAD_DVERT):
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col->width = (*tbl->len)(2, tbl->arg);
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break;
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default:
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break;
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}
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}
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}
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static void
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tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
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const struct tbl *tp, const struct tbl_dat *dp)
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{
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size_t sz;
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/* Branch down into data sub-types. */
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switch (dp->layout->pos) {
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case (TBL_CELL_HORIZ):
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/* FALLTHROUGH */
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case (TBL_CELL_DHORIZ):
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sz = (*tbl->len)(1, tbl->arg);
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if (col->width < sz)
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col->width = sz;
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break;
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case (TBL_CELL_LONG):
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/* FALLTHROUGH */
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case (TBL_CELL_CENTRE):
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/* FALLTHROUGH */
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case (TBL_CELL_LEFT):
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/* FALLTHROUGH */
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case (TBL_CELL_RIGHT):
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tblcalc_literal(tbl, col, dp);
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break;
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case (TBL_CELL_NUMBER):
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tblcalc_number(tbl, col, tp, dp);
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break;
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case (TBL_CELL_DOWN):
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break;
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default:
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abort();
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/* NOTREACHED */
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}
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}
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static void
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tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
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const struct tbl_dat *dp)
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{
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size_t sz;
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const char *str;
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str = dp->string ? dp->string : "";
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sz = (*tbl->slen)(str, tbl->arg);
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if (col->width < sz)
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col->width = sz;
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}
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static void
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tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
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const struct tbl *tp, const struct tbl_dat *dp)
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{
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int i;
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size_t sz, psz, ssz, d;
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const char *str;
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char *cp;
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char buf[2];
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/*
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* First calculate number width and decimal place (last + 1 for
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* non-decimal numbers). If the stored decimal is subsequent to
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* ours, make our size longer by that difference
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* (right-"shifting"); similarly, if ours is subsequent the
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* stored, then extend the stored size by the difference.
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* Finally, re-assign the stored values.
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*/
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str = dp->string ? dp->string : "";
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sz = (*tbl->slen)(str, tbl->arg);
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/* FIXME: TBL_DATA_HORIZ et al.? */
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buf[0] = tp->decimal;
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buf[1] = '\0';
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psz = (*tbl->slen)(buf, tbl->arg);
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if (NULL != (cp = strrchr(str, tp->decimal))) {
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buf[1] = '\0';
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for (ssz = 0, i = 0; cp != &str[i]; i++) {
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buf[0] = str[i];
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ssz += (*tbl->slen)(buf, tbl->arg);
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}
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d = ssz + psz;
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} else
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d = sz + psz;
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/* Adjust the settings for this column. */
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if (col->decimal > d) {
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sz += col->decimal - d;
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d = col->decimal;
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} else
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col->width += d - col->decimal;
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if (sz > col->width)
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col->width = sz;
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if (d > col->decimal)
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col->decimal = d;
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}
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