tbl.c

   1 /*      $Id: tbl.c,v 1.20 2011/01/03 13:59:21 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17 #include <assert.h>
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <time.h>
  22
  23 #include "mandoc.h"
  24 #include "roff.h"
  25 #include "libmandoc.h"
  26 #include "libroff.h"
  27
  28 enum rofferr
  29 tbl_read(struct tbl_node *tbl, int ln, const char *p, int offs)
  30 {
  31         int              len;
  32         const char      *cp;
  33
  34         cp = &p[offs];
  35         len = (int)strlen(cp);
  36
  37         /*
  38          * If we're in the options section and we don't have a
  39          * terminating semicolon, assume we've moved directly into the
  40          * layout section.  No need to report a warning: this is,
  41          * apparently, standard behaviour.
  42          */
  43
  44         if (TBL_PART_OPTS == tbl->part && len)
  45                 if (';' != cp[len - 1])
  46                         tbl->part = TBL_PART_LAYOUT;
  47
  48         /* Now process each logical section of the table.  */
  49
  50         switch (tbl->part) {
  51         case (TBL_PART_OPTS):
  52                 return(tbl_option(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
  53         case (TBL_PART_LAYOUT):
  54                 return(tbl_layout(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
  55         case (TBL_PART_DATA):
  56                 break;
  57         }
  58
  59         /*
  60          * This only returns zero if the line is empty, so we ignore it
  61          * and continue on.
  62          */
  63         return(tbl_data(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  64 }
  65
  66 struct tbl_node *
  67 tbl_alloc(int pos, int line, void *data, const mandocmsg msg)
  68 {
  69         struct tbl_node *p;
  70
  71         p = mandoc_calloc(1, sizeof(struct tbl_node));
  72         p->line = line;
  73         p->pos = pos;
  74         p->data = data;
  75         p->msg = msg;
  76         p->part = TBL_PART_OPTS;
  77         p->opts.tab = '\t';
  78         p->opts.linesize = 12;
  79         p->opts.decimal = '.';
  80         return(p);
  81 }
  82
  83 void
  84 tbl_free(struct tbl_node *p)
  85 {
  86         struct tbl_row  *rp;
  87         struct tbl_cell *cp;
  88         struct tbl_span *sp;
  89         struct tbl_dat  *dp;
  90         struct tbl_head *hp;
  91
  92         while (NULL != (rp = p->first_row)) {
  93                 p->first_row = rp->next;
  94                 while (rp->first) {
  95                         cp = rp->first;
  96                         rp->first = cp->next;
  97                         free(cp);
  98                 }
  99                 free(rp);
 100         }
 101
 102         while (NULL != (sp = p->first_span)) {
 103                 p->first_span = sp->next;
 104                 while (sp->first) {
 105                         dp = sp->first;
 106                         sp->first = dp->next;
 107                         if (dp->string)
 108                                 free(dp->string);
 109                         free(dp);
 110                 }
 111                 free(sp);
 112         }
 113
 114         while (NULL != (hp = p->first_head)) {
 115                 p->first_head = hp->next;
 116                 free(hp);
 117         }
 118
 119         free(p);
 120 }
 121
 122 void
 123 tbl_restart(int line, int pos, struct tbl_node *tbl)
 124 {
 125
 126         tbl->part = TBL_PART_LAYOUT;
 127         tbl->line = line;
 128         tbl->pos = pos;
 129
 130         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 131                 TBL_MSG(tbl, MANDOCERR_TBLNODATA, tbl->line, tbl->pos);
 132 }
 133
 134 const struct tbl_span *
 135 tbl_span(const struct tbl_node *tbl)
 136 {
 137
 138         assert(tbl);
 139         return(tbl->last_span);
 140 }
 141
 142 void
 143 tbl_end(struct tbl_node *tbl)
 144 {
 145
 146         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 147                 TBL_MSG(tbl, MANDOCERR_TBLNODATA, tbl->line, tbl->pos);
 148
 149         if (tbl->last_span)
 150                 tbl->last_span->flags |= TBL_SPAN_LAST;
 151 }
 152