]> git.cameronkatri.com Git - mandoc.git/blobdiff - tbl_html.c
do not crash when a manpath directory contains a symbolic link
[mandoc.git] / tbl_html.c
index 7594dfc961e276d0b217f7dbfdb7728254f94c88..ce03c6ac7f2c2075ea2ec4d6ec35d1a2d0a54e3f 100644 (file)
@@ -1,6 +1,7 @@
-/*     $Id: tbl_html.c,v 1.5 2011/01/06 12:31:39 kristaps Exp $ */
+/*     $Id: tbl_html.c,v 1.36 2021/08/10 12:55:04 schwarze Exp $ */
 /*
- * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2014,2015,2017,2018,2021 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -14,9 +15,9 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
+
+#include <sys/types.h>
 
 #include <assert.h>
 #include <stdio.h>
 #include <string.h>
 
 #include "mandoc.h"
+#include "roff.h"
+#include "tbl.h"
 #include "out.h"
 #include "html.h"
 
+static void     html_tblopen(struct html *, const struct tbl_span *);
 static size_t   html_tbl_len(size_t, void *);
 static size_t   html_tbl_strlen(const char *, void *);
+static size_t   html_tbl_sulen(const struct roffsu *, void *);
+
 
-/* ARGSUSED */
 static size_t
 html_tbl_len(size_t sz, void *arg)
 {
-       
-       return(sz);
+       return sz;
 }
 
-/* ARGSUSED */
 static size_t
 html_tbl_strlen(const char *p, void *arg)
+{
+       return strlen(p);
+}
+
+static size_t
+html_tbl_sulen(const struct roffsu *su, void *arg)
+{
+       if (su->scale < 0.0)
+               return 0;
+
+       switch (su->unit) {
+       case SCALE_FS:  /* 2^16 basic units */
+               return su->scale * 65536.0 / 24.0;
+       case SCALE_IN:  /* 10 characters per inch */
+               return su->scale * 10.0;
+       case SCALE_CM:  /* 2.54 cm per inch */
+               return su->scale * 10.0 / 2.54;
+       case SCALE_PC:  /* 6 pica per inch */
+       case SCALE_VS:
+               return su->scale * 10.0 / 6.0;
+       case SCALE_EN:
+       case SCALE_EM:
+               return su->scale;
+       case SCALE_PT:  /* 12 points per pica */
+               return su->scale * 10.0 / 6.0 / 12.0;
+       case SCALE_BU:  /* 24 basic units per character */
+               return su->scale / 24.0;
+       case SCALE_MM:  /* 1/1000 inch */
+               return su->scale / 100.0;
+       default:
+               abort();
+       }
+}
+
+static void
+html_tblopen(struct html *h, const struct tbl_span *sp)
+{
+       html_close_paragraph(h);
+       if (h->tbl.cols == NULL) {
+               h->tbl.len = html_tbl_len;
+               h->tbl.slen = html_tbl_strlen;
+               h->tbl.sulen = html_tbl_sulen;
+               tblcalc(&h->tbl, sp, 0, 0);
+       }
+       assert(NULL == h->tblt);
+       h->tblt = print_otag(h, TAG_TABLE, "c?ss", "tbl",
+           "border",
+               sp->opts->opts & TBL_OPT_ALLBOX ? "1" : NULL,
+           "border-style",
+               sp->opts->opts & TBL_OPT_DBOX ? "double" :
+               sp->opts->opts & TBL_OPT_BOX ? "solid" : NULL,
+           "border-top-style",
+               sp->pos == TBL_SPAN_DHORIZ ? "double" :
+               sp->pos == TBL_SPAN_HORIZ ? "solid" : NULL);
+}
+
+void
+print_tblclose(struct html *h)
 {
 
-       return(strlen(p));
+       assert(h->tblt);
+       print_tagq(h, h->tblt);
+       h->tblt = NULL;
 }
 
 void
 print_tbl(struct html *h, const struct tbl_span *sp)
 {
-       const struct tbl_head *hp;
-       const struct tbl_dat *dp;
-       struct tag      *tt;
-       struct htmlpair  tag;
-       struct roffsu    su;
-       struct roffcol  *col;
+       const struct tbl_dat    *dp;
+       const struct tbl_cell   *cp;
+       const struct tbl_span   *psp;
+       struct tag              *tt;
+       const char              *hspans, *vspans, *halign, *valign;
+       const char              *bborder, *lborder, *rborder;
+       char                     hbuf[4], vbuf[4];
+       enum mandoc_esc          save_font;
+       int                      i;
+
+       if (h->tblt == NULL)
+               html_tblopen(h, sp);
+
+       /*
+        * Horizontal lines spanning the whole table
+        * are handled by previous or following table rows.
+        */
+
+       if (sp->pos != TBL_SPAN_DATA)
+               return;
 
        /* Inhibit printing of spaces: we do padding ourselves. */
 
        h->flags |= HTML_NONOSPACE;
        h->flags |= HTML_NOSPACE;
 
-       /* First pass: calculate widths. */
-
-       if (TBL_SPAN_FIRST & sp->flags) {
-               h->tbl.len = html_tbl_len;
-               h->tbl.slen = html_tbl_strlen;
-               tblcalc(&h->tbl, sp);
-       }
+       /* Draw a vertical line left of this row? */
 
-       switch (sp->pos) {
-       case (TBL_SPAN_HORIZ):
-               /* FALLTHROUGH */
-       case (TBL_SPAN_DHORIZ):
+       switch (sp->layout->vert) {
+       case 2:
+               lborder = "double";
+               break;
+       case 1:
+               lborder = "solid";
                break;
        default:
-               PAIR_CLASS_INIT(&tag, "tbl");
-               print_otag(h, TAG_TABLE, 1, &tag);
-               print_otag(h, TAG_TR, 0, NULL);
-
-               /* Iterate over template headers. */
-
-               dp = sp->first;
-               for (hp = sp->head; hp; hp = hp->next) {
-                       switch (hp->pos) {
-                       case (TBL_HEAD_VERT):
-                               /* FALLTHROUGH */
-                       case (TBL_HEAD_DVERT):
-                               continue;
-                       case (TBL_HEAD_DATA):
-                               break;
-                       }
-
-                       /*
-                        * For the time being, use the simplest possible
-                        * table styling: setting the widths of data
-                        * columns.
-                        */
-
-                       col = &h->tbl.cols[hp->ident];
-                       SCALE_HS_INIT(&su, col->width);
-                       bufcat_su(h, "width", &su);
-                       PAIR_STYLE_INIT(&tag, h);
-                       tt = print_otag(h, TAG_TD, 1, &tag);
-
-                       if (dp && dp->string) 
-                               print_text(h, dp->string);
-                       if (dp)
-                               dp = dp->next;
-
-                       print_tagq(h, tt);
-               }
+               lborder = NULL;
                break;
        }
 
-       h->flags &= ~HTML_NONOSPACE;
+       /* Draw a horizontal line below this row? */
+
+       bborder = NULL;
+       if ((psp = sp->next) != NULL) {
+               switch (psp->pos) {
+               case TBL_SPAN_DHORIZ:
+                       bborder = "double";
+                       break;
+               case TBL_SPAN_HORIZ:
+                       bborder = "solid";
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       tt = print_otag(h, TAG_TR, "ss",
+           "border-left-style", lborder,
+           "border-bottom-style", bborder);
+
+       for (dp = sp->first; dp != NULL; dp = dp->next) {
+               print_stagq(h, tt);
+
+               /*
+                * Do not generate <td> elements for continuations
+                * of spanned cells.  Larger <td> elements covering
+                * this space were already generated earlier.
+                */
+
+               cp = dp->layout;
+               if (cp->pos == TBL_CELL_SPAN || cp->pos == TBL_CELL_DOWN ||
+                   (dp->string != NULL && strcmp(dp->string, "\\^") == 0))
+                       continue;
 
-       /* Close out column specifiers on the last span. */
+               /* Determine the attribute values. */
+
+               if (dp->hspans > 0) {
+                       (void)snprintf(hbuf, sizeof(hbuf),
+                           "%d", dp->hspans + 1);
+                       hspans = hbuf;
+               } else
+                       hspans = NULL;
+               if (dp->vspans > 0) {
+                       (void)snprintf(vbuf, sizeof(vbuf),
+                           "%d", dp->vspans + 1);
+                       vspans = vbuf;
+               } else
+                       vspans = NULL;
+
+               switch (cp->pos) {
+               case TBL_CELL_CENTRE:
+                       halign = "center";
+                       break;
+               case TBL_CELL_RIGHT:
+               case TBL_CELL_NUMBER:
+                       halign = "right";
+                       break;
+               default:
+                       halign = NULL;
+                       break;
+               }
+               if (cp->flags & TBL_CELL_TALIGN)
+                       valign = "top";
+               else if (cp->flags & TBL_CELL_BALIGN)
+                       valign = "bottom";
+               else
+                       valign = NULL;
+
+               for (i = dp->hspans; i > 0; i--)
+                       cp = cp->next;
+               switch (cp->vert) {
+               case 2:
+                       rborder = "double";
+                       break;
+               case 1:
+                       rborder = "solid";
+                       break;
+               default:
+                       rborder = NULL;
+                       break;
+               }
+
+               /* Print the element and the attributes. */
+
+               print_otag(h, TAG_TD, "??sss",
+                   "colspan", hspans, "rowspan", vspans,
+                   "vertical-align", valign,
+                   "text-align", halign,
+                   "border-right-style", rborder);
+               if (dp->string != NULL) {
+                       save_font = h->metac;
+                       html_setfont(h, dp->layout->font);
+                       if (dp->layout->pos == TBL_CELL_LONG)
+                               print_text(h, "\\[u2003]");  /* em space */
+                       print_text(h, dp->string);
+                       html_setfont(h, save_font);
+               }
+       }
+
+       print_tagq(h, tt);
+
+       h->flags &= ~HTML_NONOSPACE;
 
-       if (TBL_SPAN_LAST & sp->flags) {
+       if (sp->next == NULL) {
                assert(h->tbl.cols);
                free(h->tbl.cols);
                h->tbl.cols = NULL;
+               print_tblclose(h);
        }
 }