src/libs/libgroff/fontfile.cpp - master - niceSOFT/groff

src/libs/libgroff/fontfile.cpp
111 строк3 KB
G. Branden Robinson
src/libs/libgroff/fontfile.cpp: Revise copyright.
17 мар 2026, 16:22
17 мар 2026, 16:221f37237
/* Copyright 1989-1992 Free Software Foundation, Inc.

Written by James Clark (jjc@jclark.com)

This file is part of groff, the GNU roff typesetting system.

groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or
(at your option) any later version.

groff is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>. */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <assert.h> // assert()
#include <stdio.h> // snprintf()
#include <string.h> // strchr(), strlen()

#include "lib.h"

#include "font.h"
#include "searchpath.h"
#include "device.h"
#include "defs.h"

// See groff(1), section "Environment".
const char *const FONT_ENV_VAR = "GROFF_FONT_PATH";

static search_path font_path(FONT_ENV_VAR, FONTPATH, 0, 0);

int font::res = 0;
int font::hor = 1;
int font::vert = 1;
int font::unitwidth = 0;
int font::paperwidth = 0;
int font::paperlength = 0;
const char *font::papersize = 0;
int font::biggestfont = 0;
int font::spare2 = 0;
int font::sizescale = 1;
bool font::has_tcommand = false;
bool font::pass_filenames = false;
bool font::use_unscaled_charwidths = false;
bool font::use_charnames_in_special = false;
bool font::is_unicode = false;
const char *font::image_generator = 0;
const char **font::font_name_table = 0;
int *font::sizes = 0;
const char *font::family = 0;
const char **font::style_table = 0;
FONT_COMMAND_HANDLER font::unknown_desc_command_handler = 0;

void font::command_line_font_dir(const char *dir)
{
  font_path.command_line_dir(dir);
}

FILE *font::open_file(const char *nm, char **pathp)
{
  assert(nm != 0 /* nullptr */);
  assert(device != 0 /* nullptr */);
  FILE *fp = 0 /* nullptr */;
  // Do not traverse user-specified directories; Savannah #61424.
  if ((0 /* nullptr */ == strchr(nm, '/'))
      && (device != 0 /* nullptr */) && (nm != 0 /* nullptr */)) {
    // Allocate enough for nm + device + 'dev' '/' '\0'.
    size_t expected_size = strlen(nm) + strlen(device) + 5;
    char *filename = new char[expected_size];
    const size_t actual_size = snprintf(filename, expected_size,
					"dev%s/%s", device, nm);
    expected_size--; // snprintf() doesn't count the null terminator.
    if (actual_size == expected_size)
      fp = font_path.open_file(filename, pathp);
    delete[] filename;
  }
  return fp;
}

FILE *font::open_resource_file(const char *nm, char **pathp)
{
  assert(nm != 0 /* nullptr */);
  assert(device != 0 /* nullptr */);
  FILE *fp = 0 /* nullptr */;
  if ((device != 0 /* nullptr */) && (nm != 0 /* nullptr */)) {
    // Allocate enough for nm + device + 'dev' '/' '\0'.
    size_t expected_size = strlen(nm) + strlen(device) + 5;
    char *filename = new char[expected_size];
    const size_t actual_size = snprintf(filename, expected_size,
					"dev%s/%s", device, nm);
    expected_size--; // snprintf() doesn't count the null terminator.
    if (actual_size == expected_size)
      fp = font_path.open_file(filename, pathp);
    delete[] filename;
  }
  return fp;
}

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// mode: C++
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