Line data    Source code

       1             : /* Copyright 1989-2024 Free Software Foundation, Inc.
       2             :      Written by James Clark (jjc@jclark.com)
       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 <assert.h> // assert()
      24             : #include <stdio.h> // snprintf()
      25             : #include <string.h> // strchr(), strlen()
      26             : 
      27             : #include "lib.h"
      28             : 
      29             : #include "font.h"
      30             : #include "searchpath.h"
      31             : #include "device.h"
      32             : #include "defs.h"
      33             : 
      34             : const char *const FONT_ENV_VAR = "GROFF_FONT_PATH";
      35             : 
      36             : static search_path font_path(FONT_ENV_VAR, FONTPATH, 0, 0);
      37             : 
      38             : int font::res = 0;
      39             : int font::hor = 1;
      40             : int font::vert = 1;
      41             : int font::unitwidth = 0;
      42             : int font::paperwidth = 0;
      43             : int font::paperlength = 0;
      44             : const char *font::papersize = 0;
      45             : int font::biggestfont = 0;
      46             : int font::spare2 = 0;
      47             : int font::sizescale = 1;
      48             : bool font::has_tcommand = false;
      49             : bool font::pass_filenames = false;
      50             : bool font::use_unscaled_charwidths = false;
      51             : bool font::use_charnames_in_special = false;
      52             : bool font::is_unicode = false;
      53             : const char *font::image_generator = 0;
      54             : const char **font::font_name_table = 0;
      55             : int *font::sizes = 0;
      56             : const char *font::family = 0;
      57             : const char **font::style_table = 0;
      58             : FONT_COMMAND_HANDLER font::unknown_desc_command_handler = 0;
      59             : 
      60         136 : void font::command_line_font_dir(const char *dir)
      61             : {
      62         136 :   font_path.command_line_dir(dir);
      63         136 : }
      64             : 
      65       24422 : FILE *font::open_file(const char *nm, char **pathp)
      66             : {
      67       24422 :   assert(nm != 0 /* nullptr */);
      68       24422 :   assert(device != 0 /* nullptr */);
      69       24422 :   FILE *fp = 0 /* nullptr */;
      70             :   // Do not traverse user-specified directories; Savannah #61424.
      71       24422 :   if ((0 /* nullptr */ == strchr(nm, '/'))
      72       24421 :       && (device != 0 /* nullptr */) && (nm != 0 /* nullptr */)) {
      73             :     // Allocate enough for nm + device + 'dev' '/' '\0'.
      74       24421 :     size_t expected_size = strlen(nm) + strlen(device) + 5;
      75       24421 :     char *filename = new char[expected_size];
      76       24421 :     const size_t actual_size = snprintf(filename, expected_size,
      77       24421 :                                         "dev%s/%s", device, nm);
      78       24421 :     expected_size--; // snprintf() doesn't count the null terminator.
      79       24421 :     if (actual_size == expected_size)
      80       24421 :       fp = font_path.open_file(filename, pathp);
      81       24421 :     delete[] filename;
      82             :   }
      83       24422 :   return fp;
      84             : }
      85             : 
      86          56 : FILE *font::open_resource_file(const char *nm, char **pathp)
      87             : {
      88          56 :   assert(nm != 0 /* nullptr */);
      89          56 :   assert(device != 0 /* nullptr */);
      90          56 :   FILE *fp = 0 /* nullptr */;
      91          56 :   if ((device != 0 /* nullptr */) && (nm != 0 /* nullptr */)) {
      92             :     // Allocate enough for nm + device + 'dev' '/' '\0'.
      93          56 :     size_t expected_size = strlen(nm) + strlen(device) + 5;
      94          56 :     char *filename = new char[expected_size];
      95          56 :     const size_t actual_size = snprintf(filename, expected_size,
      96          56 :                                         "dev%s/%s", device, nm);
      97          56 :     expected_size--; // snprintf() doesn't count the null terminator.
      98          56 :     if (actual_size == expected_size)
      99          56 :       fp = font_path.open_file(filename, pathp);
     100          56 :     delete[] filename;
     101             :   }
     102          56 :   return fp;
     103             : }
     104             : 
     105             : // Local Variables:
     106             : // fill-column: 72
     107             : // mode: C++
     108             : // End:
     109             : // vim: set cindent noexpandtab shiftwidth=2 textwidth=72: