tbl_data.c

   1 /*      $Id: tbl_data.c,v 1.10 2011/01/04 12:06:21 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 <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         if (TBL_CELL_HORIZ == dat->layout->pos ||
  87                         TBL_CELL_DHORIZ == dat->layout->pos)
  88                 if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
  89                         TBL_MSG(tbl, MANDOCERR_TBLIGNDATA, ln, sv);
  90 }
  91
  92 int
  93 tbl_data(struct tbl_node *tbl, int ln, const char *p)
  94 {
  95         struct tbl_span *dp;
  96         struct tbl_row  *rp;
  97         int              pos;
  98
  99         pos = 0;
 100
 101         if ('\0' == p[pos]) {
 102                 TBL_MSG(tbl, MANDOCERR_TBL, ln, pos);
 103                 return(0);
 104         }
 105
 106         /*
 107          * Choose a layout row: take the one following the last parsed
 108          * span's.  If that doesn't exist, use the last parsed span's.
 109          * If there's no last parsed span, use the first row.  This can
 110          * be NULL!
 111          */
 112
 113         if (tbl->last_span) {
 114                 assert(tbl->last_span->layout);
 115                 rp = tbl->last_span->layout->next;
 116                 if (NULL == rp)
 117                         rp = tbl->last_span->layout;
 118         } else
 119                 rp = tbl->first_row;
 120
 121         dp = mandoc_calloc(1, sizeof(struct tbl_span));
 122         dp->tbl = &tbl->opts;
 123         dp->layout = rp;
 124         dp->head = tbl->first_head;
 125
 126         if (tbl->last_span) {
 127                 tbl->last_span->next = dp;
 128                 tbl->last_span = dp;
 129         } else {
 130                 tbl->last_span = tbl->first_span = dp;
 131                 dp->flags |= TBL_SPAN_FIRST;
 132         }
 133
 134         if ( ! strcmp(p, "_")) {
 135                 dp->pos = TBL_SPAN_HORIZ;
 136                 return(1);
 137         } else if ( ! strcmp(p, "=")) {
 138                 dp->pos = TBL_SPAN_DHORIZ;
 139                 return(1);
 140         }
 141
 142         dp->pos = TBL_SPAN_DATA;
 143
 144         while ('\0' != p[pos])
 145                 data(tbl, dp, ln, p, &pos);
 146
 147         return(1);
 148 }