tbl_data.c

   1 /*      $Id: tbl_data.c,v 1.9 2011/01/02 12:04:23 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 <ctype.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <time.h>
  22
  23 #include "mandoc.h"
  24 #include "libmandoc.h"
  25 #include "libroff.h"
  26
  27 static  void    data(struct tbl_node *, struct tbl_span *,
  28                         int, const char *, int *);
  29
  30 void
  31 data(struct tbl_node *tbl, struct tbl_span *dp,
  32                 int ln, const char *p, int *pos)
  33 {
  34         struct tbl_dat  *dat;
  35         struct tbl_cell *cp;
  36         int              sv;
  37
  38         cp = NULL;
  39         if (dp->last && dp->last->layout)
  40                 cp = dp->last->layout->next;
  41         else if (NULL == dp->last)
  42                 cp = dp->layout->first;
  43
  44         /* Skip over spanners to data formats. */
  45
  46         while (cp && (TBL_CELL_VERT == cp->pos ||
  47                                 TBL_CELL_DVERT == cp->pos))
  48                 cp = cp->next;
  49
  50         /* FIXME: warn about losing data contents if cell is HORIZ. */
  51
  52         dat = mandoc_calloc(1, sizeof(struct tbl_dat));
  53         dat->layout = cp;
  54
  55         if (NULL == dat->layout)
  56                 TBL_MSG(tbl, MANDOCERR_TBLEXTRADAT, ln, *pos);
  57
  58         if (dp->last) {
  59                 dp->last->next = dat;
  60                 dp->last = dat;
  61         } else
  62                 dp->last = dp->first = dat;
  63
  64         sv = *pos;
  65         while (p[*pos] && p[*pos] != tbl->opts.tab)
  66                 (*pos)++;
  67
  68         dat->string = mandoc_malloc(*pos - sv + 1);
  69         memcpy(dat->string, &p[sv], *pos - sv);
  70         dat->string[*pos - sv] = '\0';
  71
  72         if (p[*pos])
  73                 (*pos)++;
  74
  75         if ( ! strcmp(dat->string, "_"))
  76                 dat->pos = TBL_DATA_HORIZ;
  77         else if ( ! strcmp(dat->string, "="))
  78                 dat->pos = TBL_DATA_DHORIZ;
  79         else if ( ! strcmp(dat->string, "\\_"))
  80                 dat->pos = TBL_DATA_NHORIZ;
  81         else if ( ! strcmp(dat->string, "\\="))
  82                 dat->pos = TBL_DATA_NDHORIZ;
  83         else
  84                 dat->pos = TBL_DATA_DATA;
  85 }
  86
  87 int
  88 tbl_data(struct tbl_node *tbl, int ln, const char *p)
  89 {
  90         struct tbl_span *dp;
  91         struct tbl_row  *rp;
  92         int              pos;
  93
  94         pos = 0;
  95
  96         if ('\0' == p[pos]) {
  97                 TBL_MSG(tbl, MANDOCERR_TBL, ln, pos);
  98                 return(0);
  99         }
 100
 101         /*
 102          * Choose a layout row: take the one following the last parsed
 103          * span's.  If that doesn't exist, use the last parsed span's.
 104          * If there's no last parsed span, use the first row.  This can
 105          * be NULL!
 106          */
 107
 108         if (tbl->last_span) {
 109                 assert(tbl->last_span->layout);
 110                 rp = tbl->last_span->layout->next;
 111                 if (NULL == rp)
 112                         rp = tbl->last_span->layout;
 113         } else
 114                 rp = tbl->first_row;
 115
 116         dp = mandoc_calloc(1, sizeof(struct tbl_span));
 117         dp->tbl = &tbl->opts;
 118         dp->layout = rp;
 119         dp->head = tbl->first_head;
 120
 121         if (tbl->last_span) {
 122                 tbl->last_span->next = dp;
 123                 tbl->last_span = dp;
 124         } else {
 125                 tbl->last_span = tbl->first_span = dp;
 126                 dp->flags |= TBL_SPAN_FIRST;
 127         }
 128
 129         if ( ! strcmp(p, "_")) {
 130                 dp->pos = TBL_SPAN_HORIZ;
 131                 return(1);
 132         } else if ( ! strcmp(p, "=")) {
 133                 dp->pos = TBL_SPAN_DHORIZ;
 134                 return(1);
 135         }
 136
 137         dp->pos = TBL_SPAN_DATA;
 138
 139         while ('\0' != p[pos])
 140                 data(tbl, dp, ln, p, &pos);
 141
 142         return(1);
 143 }