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tbl.c revision 1.6 
      1 /*	$Id: tbl.c,v 1.6 2015/12/17 22:31:12 christos Exp $ */
      2 /*
      3  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps (at) bsd.lv>
      4  * Copyright (c) 2011, 2015 Ingo Schwarze <schwarze (at) openbsd.org>
      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 "config.h"
     19 
     20 #include <sys/types.h>
     21 
     22 #include <assert.h>
     23 #include <stdio.h>
     24 #include <stdlib.h>
     25 #include <string.h>
     26 #include <time.h>
     27 
     28 #include "mandoc.h"
     29 #include "mandoc_aux.h"
     30 #include "libmandoc.h"
     31 #include "libroff.h"
     32 
     33 
     34 enum rofferr
     35 tbl_read(struct tbl_node *tbl, int ln, const char *p, int pos)
     36 {
     37 	const char	*cp;
     38 	int		 active;
     39 
     40 	/*
     41 	 * In the options section, proceed to the layout section
     42 	 * after a semicolon, or right away if there is no semicolon.
     43 	 * Ignore semicolons in arguments.
     44 	 */
     45 
     46 	if (tbl->part == TBL_PART_OPTS) {
     47 		tbl->part = TBL_PART_LAYOUT;
     48 		active = 1;
     49 		for (cp = p + pos; *cp != '\0'; cp++) {
     50 			switch (*cp) {
     51 			case '(':
     52 				active = 0;
     53 				continue;
     54 			case ')':
     55 				active = 1;
     56 				continue;
     57 			case ';':
     58 				if (active)
     59 					break;
     60 				continue;
     61 			default:
     62 				continue;
     63 			}
     64 			break;
     65 		}
     66 		if (*cp == ';') {
     67 			tbl_option(tbl, ln, p, &pos);
     68 			if (p[pos] == '\0')
     69 				return(ROFF_IGN);
     70 		}
     71 	}
     72 
     73 	/* Process the other section types.  */
     74 
     75 	switch (tbl->part) {
     76 	case TBL_PART_LAYOUT:
     77 		tbl_layout(tbl, ln, p, pos);
     78 		return(ROFF_IGN);
     79 	case TBL_PART_CDATA:
     80 		return(tbl_cdata(tbl, ln, p, pos) ? ROFF_TBL : ROFF_IGN);
     81 	default:
     82 		break;
     83 	}
     84 
     85 	tbl_data(tbl, ln, p, pos);
     86 	return(ROFF_TBL);
     87 }
     88 
     89 struct tbl_node *
     90 tbl_alloc(int pos, int line, struct mparse *parse)
     91 {
     92 	struct tbl_node	*tbl;
     93 
     94 	tbl = mandoc_calloc(1, sizeof(*tbl));
     95 	tbl->line = line;
     96 	tbl->pos = pos;
     97 	tbl->parse = parse;
     98 	tbl->part = TBL_PART_OPTS;
     99 	tbl->opts.tab = '\t';
    100 	tbl->opts.decimal = '.';
    101 	return(tbl);
    102 }
    103 
    104 void
    105 tbl_free(struct tbl_node *tbl)
    106 {
    107 	struct tbl_row	*rp;
    108 	struct tbl_cell	*cp;
    109 	struct tbl_span	*sp;
    110 	struct tbl_dat	*dp;
    111 
    112 	while ((rp = tbl->first_row) != NULL) {
    113 		tbl->first_row = rp->next;
    114 		while (rp->first != NULL) {
    115 			cp = rp->first;
    116 			rp->first = cp->next;
    117 			free(cp);
    118 		}
    119 		free(rp);
    120 	}
    121 
    122 	while ((sp = tbl->first_span) != NULL) {
    123 		tbl->first_span = sp->next;
    124 		while (sp->first != NULL) {
    125 			dp = sp->first;
    126 			sp->first = dp->next;
    127 			free(dp->string);
    128 			free(dp);
    129 		}
    130 		free(sp);
    131 	}
    132 
    133 	free(tbl);
    134 }
    135 
    136 void
    137 tbl_restart(int line, int pos, struct tbl_node *tbl)
    138 {
    139 	if (tbl->part == TBL_PART_CDATA)
    140 		mandoc_msg(MANDOCERR_TBLDATA_BLK, tbl->parse,
    141 		    line, pos, "T&");
    142 
    143 	tbl->part = TBL_PART_LAYOUT;
    144 	tbl->line = line;
    145 	tbl->pos = pos;
    146 }
    147 
    148 const struct tbl_span *
    149 tbl_span(struct tbl_node *tbl)
    150 {
    151 	struct tbl_span	 *span;
    152 
    153 	assert(tbl);
    154 	span = tbl->current_span ? tbl->current_span->next
    155 				 : tbl->first_span;
    156 	if (span)
    157 		tbl->current_span = span;
    158 	return(span);
    159 }
    160 
    161 int
    162 tbl_end(struct tbl_node **tblp)
    163 {
    164 	struct tbl_node	*tbl;
    165 	struct tbl_span *sp;
    166 
    167 	tbl = *tblp;
    168 	*tblp = NULL;
    169 
    170 	if (tbl->part == TBL_PART_CDATA)
    171 		mandoc_msg(MANDOCERR_TBLDATA_BLK, tbl->parse,
    172 		    tbl->line, tbl->pos, "TE");
    173 
    174 	sp = tbl->first_span;
    175 	while (sp != NULL && sp->first == NULL)
    176 		sp = sp->next;
    177 	if (sp == NULL) {
    178 		mandoc_msg(MANDOCERR_TBLDATA_NONE, tbl->parse,
    179 		    tbl->line, tbl->pos, NULL);
    180 		return(0);
    181 	}
    182 	return(1);
    183 }
    184