tbl.c

   1 /*      $Id: tbl.c,v 1.28 2014/03/23 11:25:26 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  * Copyright (c) 2011 Ingo Schwarze <schwarze@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 #ifdef HAVE_CONFIG_H
  19 #include "config.h"
  20 #endif
  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 enum rofferr
  34 tbl_read(struct tbl_node *tbl, int ln, const char *p, int offs)
  35 {
  36         int              len;
  37         const char      *cp;
  38
  39         cp = &p[offs];
  40         len = (int)strlen(cp);
  41
  42         /*
  43          * If we're in the options section and we don't have a
  44          * terminating semicolon, assume we've moved directly into the
  45          * layout section.  No need to report a warning: this is,
  46          * apparently, standard behaviour.
  47          */
  48
  49         if (TBL_PART_OPTS == tbl->part && len)
  50                 if (';' != cp[len - 1])
  51                         tbl->part = TBL_PART_LAYOUT;
  52
  53         /* Now process each logical section of the table.  */
  54
  55         switch (tbl->part) {
  56         case (TBL_PART_OPTS):
  57                 return(tbl_option(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
  58         case (TBL_PART_LAYOUT):
  59                 return(tbl_layout(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
  60         case (TBL_PART_CDATA):
  61                 return(tbl_cdata(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  62         default:
  63                 break;
  64         }
  65
  66         /*
  67          * This only returns zero if the line is empty, so we ignore it
  68          * and continue on.
  69          */
  70         return(tbl_data(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  71 }
  72
  73 struct tbl_node *
  74 tbl_alloc(int pos, int line, struct mparse *parse)
  75 {
  76         struct tbl_node *tbl;
  77
  78         tbl = mandoc_calloc(1, sizeof(struct tbl_node));
  79         tbl->line = line;
  80         tbl->pos = pos;
  81         tbl->parse = parse;
  82         tbl->part = TBL_PART_OPTS;
  83         tbl->opts.tab = '\t';
  84         tbl->opts.linesize = 12;
  85         tbl->opts.decimal = '.';
  86         return(tbl);
  87 }
  88
  89 void
  90 tbl_free(struct tbl_node *tbl)
  91 {
  92         struct tbl_row  *rp;
  93         struct tbl_cell *cp;
  94         struct tbl_span *sp;
  95         struct tbl_dat  *dp;
  96         struct tbl_head *hp;
  97
  98         while (NULL != (rp = tbl->first_row)) {
  99                 tbl->first_row = rp->next;
 100                 while (rp->first) {
 101                         cp = rp->first;
 102                         rp->first = cp->next;
 103                         free(cp);
 104                 }
 105                 free(rp);
 106         }
 107
 108         while (NULL != (sp = tbl->first_span)) {
 109                 tbl->first_span = sp->next;
 110                 while (sp->first) {
 111                         dp = sp->first;
 112                         sp->first = dp->next;
 113                         if (dp->string)
 114                                 free(dp->string);
 115                         free(dp);
 116                 }
 117                 free(sp);
 118         }
 119
 120         while (NULL != (hp = tbl->first_head)) {
 121                 tbl->first_head = hp->next;
 122                 free(hp);
 123         }
 124
 125         free(tbl);
 126 }
 127
 128 void
 129 tbl_restart(int line, int pos, struct tbl_node *tbl)
 130 {
 131         if (TBL_PART_CDATA == tbl->part)
 132                 mandoc_msg(MANDOCERR_TBLBLOCK, tbl->parse,
 133                                 tbl->line, tbl->pos, NULL);
 134
 135         tbl->part = TBL_PART_LAYOUT;
 136         tbl->line = line;
 137         tbl->pos = pos;
 138
 139         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 140                 mandoc_msg(MANDOCERR_TBLNODATA, tbl->parse,
 141                                 tbl->line, tbl->pos, NULL);
 142 }
 143
 144 const struct tbl_span *
 145 tbl_span(struct tbl_node *tbl)
 146 {
 147         struct tbl_span  *span;
 148
 149         assert(tbl);
 150         span = tbl->current_span ? tbl->current_span->next
 151                                  : tbl->first_span;
 152         if (span)
 153                 tbl->current_span = span;
 154         return(span);
 155 }
 156
 157 void
 158 tbl_end(struct tbl_node **tblp)
 159 {
 160         struct tbl_node *tbl;
 161
 162         tbl = *tblp;
 163         *tblp = NULL;
 164
 165         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 166                 mandoc_msg(MANDOCERR_TBLNODATA, tbl->parse,
 167                                 tbl->line, tbl->pos, NULL);
 168
 169         if (tbl->last_span)
 170                 tbl->last_span->flags |= TBL_SPAN_LAST;
 171
 172         if (TBL_PART_CDATA == tbl->part)
 173                 mandoc_msg(MANDOCERR_TBLBLOCK, tbl->parse,
 174                                 tbl->line, tbl->pos, NULL);
 175 }
 176