contrib/mdocml/tbl.c

   1 /*      $Id: tbl.c,v 1.29 2014/04/20 16:46:05 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
  34 enum rofferr
  35 tbl_read(struct tbl_node *tbl, int ln, const char *p, int offs)
  36 {
  37         int              len;
  38         const char      *cp;
  39
  40         cp = &p[offs];
  41         len = (int)strlen(cp);
  42
  43         /*
  44          * If we're in the options section and we don't have a
  45          * terminating semicolon, assume we've moved directly into the
  46          * layout section.  No need to report a warning: this is,
  47          * apparently, standard behaviour.
  48          */
  49
  50         if (TBL_PART_OPTS == tbl->part && len)
  51                 if (';' != cp[len - 1])
  52                         tbl->part = TBL_PART_LAYOUT;
  53
  54         /* Now process each logical section of the table.  */
  55
  56         switch (tbl->part) {
  57         case TBL_PART_OPTS:
  58                 return(tbl_option(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
  59         case TBL_PART_LAYOUT:
  60                 return(tbl_layout(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
  61         case TBL_PART_CDATA:
  62                 return(tbl_cdata(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  63         default:
  64                 break;
  65         }
  66
  67         /*
  68          * This only returns zero if the line is empty, so we ignore it
  69          * and continue on.
  70          */
  71         return(tbl_data(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  72 }
  73
  74 struct tbl_node *
  75 tbl_alloc(int pos, int line, struct mparse *parse)
  76 {
  77         struct tbl_node *tbl;
  78
  79         tbl = mandoc_calloc(1, sizeof(struct tbl_node));
  80         tbl->line = line;
  81         tbl->pos = pos;
  82         tbl->parse = parse;
  83         tbl->part = TBL_PART_OPTS;
  84         tbl->opts.tab = '\t';
  85         tbl->opts.linesize = 12;
  86         tbl->opts.decimal = '.';
  87         return(tbl);
  88 }
  89
  90 void
  91 tbl_free(struct tbl_node *tbl)
  92 {
  93         struct tbl_row  *rp;
  94         struct tbl_cell *cp;
  95         struct tbl_span *sp;
  96         struct tbl_dat  *dp;
  97         struct tbl_head *hp;
  98
  99         while (NULL != (rp = tbl->first_row)) {
 100                 tbl->first_row = rp->next;
 101                 while (rp->first) {
 102                         cp = rp->first;
 103                         rp->first = cp->next;
 104                         free(cp);
 105                 }
 106                 free(rp);
 107         }
 108
 109         while (NULL != (sp = tbl->first_span)) {
 110                 tbl->first_span = sp->next;
 111                 while (sp->first) {
 112                         dp = sp->first;
 113                         sp->first = dp->next;
 114                         if (dp->string)
 115                                 free(dp->string);
 116                         free(dp);
 117                 }
 118                 free(sp);
 119         }
 120
 121         while (NULL != (hp = tbl->first_head)) {
 122                 tbl->first_head = hp->next;
 123                 free(hp);
 124         }
 125
 126         free(tbl);
 127 }
 128
 129 void
 130 tbl_restart(int line, int pos, struct tbl_node *tbl)
 131 {
 132         if (TBL_PART_CDATA == tbl->part)
 133                 mandoc_msg(MANDOCERR_TBLBLOCK, tbl->parse,
 134                     tbl->line, tbl->pos, NULL);
 135
 136         tbl->part = TBL_PART_LAYOUT;
 137         tbl->line = line;
 138         tbl->pos = pos;
 139
 140         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 141                 mandoc_msg(MANDOCERR_TBLNODATA, tbl->parse,
 142                     tbl->line, tbl->pos, NULL);
 143 }
 144
 145 const struct tbl_span *
 146 tbl_span(struct tbl_node *tbl)
 147 {
 148         struct tbl_span  *span;
 149
 150         assert(tbl);
 151         span = tbl->current_span ? tbl->current_span->next
 152                                  : tbl->first_span;
 153         if (span)
 154                 tbl->current_span = span;
 155         return(span);
 156 }
 157
 158 void
 159 tbl_end(struct tbl_node **tblp)
 160 {
 161         struct tbl_node *tbl;
 162
 163         tbl = *tblp;
 164         *tblp = NULL;
 165
 166         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 167                 mandoc_msg(MANDOCERR_TBLNODATA, tbl->parse,
 168                     tbl->line, tbl->pos, NULL);
 169
 170         if (tbl->last_span)
 171                 tbl->last_span->flags |= TBL_SPAN_LAST;
 172
 173         if (TBL_PART_CDATA == tbl->part)
 174                 mandoc_msg(MANDOCERR_TBLBLOCK, tbl->parse,
 175                     tbl->line, tbl->pos, NULL);
 176 }