Line data    Source code

       1             : /* Copyright 2000-2024 Free Software Foundation, Inc.
       2             :      Written by Gaius Mulley (gaius@glam.ac.uk)
       3             : 
       4             : This file is part of groff, the GNU roff typesetting system.
       5             : 
       6             : groff is free software; you can redistribute it and/or modify it under
       7             : the terms of the GNU General Public License as published by the Free
       8             : Software Foundation, either version 3 of the License, or
       9             : (at your option) any later version.
      10             : 
      11             : groff is distributed in the hope that it will be useful, but WITHOUT ANY
      12             : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13             : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14             : for more details.
      15             : 
      16             : You should have received a copy of the GNU General Public License
      17             : along with this program.  If not, see <http://www.gnu.org/licenses/>. */
      18             : 
      19             : #ifdef HAVE_CONFIG_H
      20             : #include <config.h>
      21             : #endif
      22             : 
      23             : #include <stddef.h>
      24             : #include <stdlib.h>
      25             : 
      26             : #include "lib.h"
      27             : 
      28             : #include "nonposix.h"
      29             : #include "stringclass.h"
      30             : #include "html-strings.h"
      31             : 
      32             : /*
      33             :  *  This file contains a very simple set of routines which might
      34             :  *  be shared by preprocessors.  It allows a preprocessor to indicate
      35             :  *  when an inline image should be created.
      36             :  *  This string is intercepted by pre-grohtml and substituted for
      37             :  *  the image name and suppression escapes.
      38             :  *
      39             :  *  pre-html runs troff twice, once with -Thtml (or -Txhtml) and once
      40             :  *  with -Tps.  'troff -Thtml' (and 'troff -Txhtml') emits a
      41             :  *  <src='image'.png> tag and the postscript device driver works out
      42             :  *  the min/max limits of the graphic region.  These region limits are
      43             :  *  read by pre-html and an image is generated via
      44             :  *
      45             :  *    troff -Tps -> gs -> png
      46             :  */
      47             : 
      48             : /*
      49             :  *  html_begin_suppress - emit a start of image tag which will be seen
      50             :  *                        by pre-html.
      51             :  */
      52           2 : void html_begin_suppress()
      53             : {
      54           2 :   put_string(HTML_IMAGE_INLINE_BEGIN, stdout);
      55           2 : }
      56             : 
      57             : /*
      58             :  *  html_end_suppress - emit an end of image tag which will be seen
      59             :  *                      by pre-html.
      60             :  */
      61           2 : void html_end_suppress()
      62             : {
      63           2 :   put_string(HTML_IMAGE_INLINE_END, stdout);
      64           2 : }