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- // -*- C++ -*-
- /* Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.uucp)
-
- This file is part of groff.
-
- 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 1, 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 groff; see the file LICENSE. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "driver.h"
-
- printer *pr = 0;
-
- font_pointer_list::font_pointer_list(font *f, font_pointer_list *fp)
- : p(f), next(fp)
- {
- }
-
- printer::printer()
- : font_table(0), nfonts(0), font_list(0)
- {
- }
-
- printer::~printer()
- {
- delete font_table;
- while (font_list) {
- font_pointer_list *tem = font_list;
- font_list = font_list->next;
- delete tem->p;
- delete tem;
- }
- if (ferror(stdout) || fflush(stdout) < 0)
- fatal("output error");
- }
-
- void printer::load_font(int n, const char *nm)
- {
- assert(n >= 0);
- if (n >= nfonts) {
- if (nfonts == 0) {
- nfonts = 10;
- if (nfonts <= n)
- nfonts = n + 1;
- font_table = new font *[nfonts];
- for (int i = 0; i < nfonts; i++)
- font_table[i] = 0;
- }
- else {
- font **old_font_table = font_table;
- int old_nfonts = nfonts;
- nfonts *= 2;
- if (n >= nfonts)
- nfonts = n + 1;
- font_table = new font *[nfonts];
- for (int i = 0; i < old_nfonts; i++)
- font_table[i] = old_font_table[i];
- for (i = old_nfonts; i < nfonts; i++)
- font_table[i] = 0;
- }
- }
- font *f = find_font(nm);
- font_table[n] = f;
- }
-
- font *printer::find_font(const char *nm)
- {
- for (font_pointer_list *p = font_list; p; p = p->next)
- if (strcmp(p->p->get_name(), nm) == 0)
- return p->p;
- font *f = make_font(nm);
- if (!f)
- fatal("sorry, I can't continue");
- font_list = new font_pointer_list(f, font_list);
- return f;
- }
-
- font *printer::make_font(const char *nm)
- {
- return font::load_font(nm);
- }
-
- void printer::end_of_line()
- {
- }
-
- void printer::special(char *, const environment *)
- {
- }
-
- void printer::draw(int, int *, int, const environment *)
- {
- }
-
- void printer::set_ascii_char(unsigned char c, const environment *env,
- int *widthp)
- {
- char buf[2];
- buf[0] = c;
- buf[1] = '\0';
- set_special_char(buf, env, widthp);
- }
-
- void printer::set_special_char(const char *nm, const environment *env,
- int *widthp)
- {
- int i = font::name_to_index(nm);
- int fn = env->fontno;
- if (fn < 0 || fn >= nfonts) {
- error("bad font position `%1'", fn);
- return;
- }
- font *f = font_table[fn];
- if (f == 0) {
- error("no font mounted at `%1'", fn);
- return;
- }
- if (!f->contains(i)) {
- if (nm[0] != '\0' && nm[1] == '\0')
- error("font `%1' does not contain ascii character `%2'",
- f->get_name(),
- nm[0]);
- else
- error("font `%1' does not contain special character `%2'",
- f->get_name(),
- nm);
- return;
- }
- int w = f->get_width(i, env->size);
- if (widthp)
- *widthp = w;
- set_char(i, f, env, w);
- }
-
- void printer::set_numbered_char(int num, const environment *env, int *widthp)
- {
- if (num < 0 || num >= 256) {
- error("argument to N command not between 0 and 255");
- return;
- }
- int i = font::number_to_index((unsigned char)num);
- int fn = env->fontno;
- if (fn < 0 || fn >= nfonts) {
- error("bad font position `%1'", fn);
- return;
- }
- font *f = font_table[fn];
- if (f == 0) {
- error("no font mounted at `%1'", fn);
- return;
- }
- if (!f->contains(i)) {
- error("font `%1' does not contain numbered character %2",
- f->get_name(),
- num);
- return;
- }
- int w = f->get_width(i, env->size);
- if (widthp)
- *widthp = w;
- set_char(i, f, env, w);
- }
-