external/bsd/mdocml/dist/tbl.c

   1 /*      $Vendor-Id: tbl.c,v 1.21 2011/01/04 15:02:00 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_CDATA):
  56                 return(tbl_cdata(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  57         default:
  58                 break;
  59         }
  60
  61         /*
  62          * This only returns zero if the line is empty, so we ignore it
  63          * and continue on.
  64          */
  65         return(tbl_data(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
  66 }
  67
  68 struct tbl_node *
  69 tbl_alloc(int pos, int line, void *data, const mandocmsg msg)
  70 {
  71         struct tbl_node *p;
  72
  73         p = mandoc_calloc(1, sizeof(struct tbl_node));
  74         p->line = line;
  75         p->pos = pos;
  76         p->data = data;
  77         p->msg = msg;
  78         p->part = TBL_PART_OPTS;
  79         p->opts.tab = '\t';
  80         p->opts.linesize = 12;
  81         p->opts.decimal = '.';
  82         return(p);
  83 }
  84
  85 void
  86 tbl_free(struct tbl_node *p)
  87 {
  88         struct tbl_row  *rp;
  89         struct tbl_cell *cp;
  90         struct tbl_span *sp;
  91         struct tbl_dat  *dp;
  92         struct tbl_head *hp;
  93
  94         while (NULL != (rp = p->first_row)) {
  95                 p->first_row = rp->next;
  96                 while (rp->first) {
  97                         cp = rp->first;
  98                         rp->first = cp->next;
  99                         free(cp);
 100                 }
 101                 free(rp);
 102         }
 103
 104         while (NULL != (sp = p->first_span)) {
 105                 p->first_span = sp->next;
 106                 while (sp->first) {
 107                         dp = sp->first;
 108                         sp->first = dp->next;
 109                         if (dp->string)
 110                                 free(dp->string);
 111                         free(dp);
 112                 }
 113                 free(sp);
 114         }
 115
 116         while (NULL != (hp = p->first_head)) {
 117                 p->first_head = hp->next;
 118                 free(hp);
 119         }
 120
 121         free(p);
 122 }
 123
 124 void
 125 tbl_restart(int line, int pos, struct tbl_node *tbl)
 126 {
 127         if (TBL_PART_CDATA == tbl->part)
 128                 TBL_MSG(tbl, MANDOCERR_TBLBLOCK, tbl->line, tbl->pos);
 129
 130         tbl->part = TBL_PART_LAYOUT;
 131         tbl->line = line;
 132         tbl->pos = pos;
 133
 134         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 135                 TBL_MSG(tbl, MANDOCERR_TBLNODATA, tbl->line, tbl->pos);
 136 }
 137
 138 const struct tbl_span *
 139 tbl_span(const struct tbl_node *tbl)
 140 {
 141
 142         assert(tbl);
 143         return(tbl->last_span);
 144 }
 145
 146 void
 147 tbl_end(struct tbl_node *tbl)
 148 {
 149
 150         if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 151                 TBL_MSG(tbl, MANDOCERR_TBLNODATA, tbl->line, tbl->pos);
 152
 153         if (tbl->last_span)
 154                 tbl->last_span->flags |= TBL_SPAN_LAST;
 155
 156         if (TBL_PART_CDATA == tbl->part)
 157                 TBL_MSG(tbl, MANDOCERR_TBLBLOCK, tbl->line, tbl->pos);
 158 }
 159