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Diffstat (limited to 'gnu/usr.bin/groff/troff/reg.cc')
-rw-r--r--gnu/usr.bin/groff/troff/reg.cc458
1 files changed, 0 insertions, 458 deletions
diff --git a/gnu/usr.bin/groff/troff/reg.cc b/gnu/usr.bin/groff/troff/reg.cc
deleted file mode 100644
index cefeb87ed5f2..000000000000
--- a/gnu/usr.bin/groff/troff/reg.cc
+++ /dev/null
@@ -1,458 +0,0 @@
-// -*- C++ -*-
-/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
-
-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 2, 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 COPYING. If not, write to the Free Software
-Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include "troff.h"
-#include "symbol.h"
-#include "dictionary.h"
-#include "token.h"
-#include "request.h"
-#include "reg.h"
-
-object_dictionary number_reg_dictionary(101);
-
-int reg::get_value(units * /*d*/)
-{
- return 0;
-}
-
-void reg::increment()
-{
- error("can't increment read-only register");
-}
-
-void reg::decrement()
-{
- error("can't decrement read-only register");
-}
-
-void reg::set_increment(units /*n*/)
-{
- error("can't auto increment read-only register");
-}
-
-void reg::alter_format(char /*f*/, int /*w*/)
-{
- error("can't alter format of read-only register");
-}
-
-const char *reg::get_format()
-{
- return "0";
-}
-
-void reg::set_value(units /*n*/)
-{
- error("can't write read-only register");
-}
-
-general_reg::general_reg() : format('1'), width(0), inc(0)
-{
-}
-
-static const char *number_value_to_ascii(int value, char format, int width)
-{
- static char buf[128]; // must be at least 21
- switch(format) {
- case '1':
- if (width <= 0)
- return itoa(value);
- else if (width > sizeof(buf) - 2)
- sprintf(buf, "%.*d", sizeof(buf) - 2, int(value));
- else
- sprintf(buf, "%.*d", width, int(value));
- break;
- case 'i':
- case 'I':
- {
- char *p = buf;
- // troff uses z and w to represent 10000 and 5000 in Roman
- // numerals; I can find no historical basis for this usage
- const char *s = format == 'i' ? "zwmdclxvi" : "ZWMDCLXVI";
- int n = int(value);
- if (n >= 40000 || n <= -40000) {
- error("magnitude of `%1' too big for i or I format", n);
- return itoa(n);
- }
- if (n == 0) {
- *p++ = '0';
- *p = 0;
- break;
- }
- if (n < 0) {
- *p++ = '-';
- n = -n;
- }
- while (n >= 10000) {
- *p++ = s[0];
- n -= 10000;
- }
- for (int i = 1000; i > 0; i /= 10, s += 2) {
- int m = n/i;
- n -= m*i;
- switch (m) {
- case 3:
- *p++ = s[2];
- /* falls through */
- case 2:
- *p++ = s[2];
- /* falls through */
- case 1:
- *p++ = s[2];
- break;
- case 4:
- *p++ = s[2];
- *p++ = s[1];
- break;
- case 8:
- *p++ = s[1];
- *p++ = s[2];
- *p++ = s[2];
- *p++ = s[2];
- break;
- case 7:
- *p++ = s[1];
- *p++ = s[2];
- *p++ = s[2];
- break;
- case 6:
- *p++ = s[1];
- *p++ = s[2];
- break;
- case 5:
- *p++ = s[1];
- break;
- case 9:
- *p++ = s[2];
- *p++ = s[0];
- }
- }
- *p = 0;
- break;
- }
- case 'a':
- case 'A':
- {
- int n = value;
- char *p = buf;
- if (n == 0) {
- *p++ = '0';
- *p = 0;
- }
- else {
- if (n < 0) {
- n = -n;
- *p++ = '-';
- }
- // this is a bit tricky
- while (n > 0) {
- int d = n % 26;
- if (d == 0)
- d = 26;
- n -= d;
- n /= 26;
- *p++ = format + d - 1;
- }
- *p-- = 0;
- char *q = buf[0] == '-' ? buf+1 : buf;
- while (q < p) {
- char temp = *q;
- *q = *p;
- *p = temp;
- --p;
- ++q;
- }
- }
- break;
- }
- default:
- assert(0);
- break;
- }
- return buf;
-}
-
-const char *general_reg::get_string()
-{
- units n;
- if (!get_value(&n))
- return "";
- return number_value_to_ascii(n, format, width);
-}
-
-
-void general_reg::increment()
-{
- int n;
- if (get_value(&n))
- set_value(n + inc);
-}
-
-void general_reg::decrement()
-{
- int n;
- if (get_value(&n))
- set_value(n - inc);
-}
-
-void general_reg::set_increment(units n)
-{
- inc = n;
-}
-
-void general_reg::alter_format(char f, int w)
-{
- format = f;
- width = w;
-}
-
-static const char *number_format_to_ascii(char format, int width)
-{
- static char buf[24];
- if (format == '1') {
- if (width > 0) {
- int n = width;
- if (n > int(sizeof(buf)) - 1)
- n = int(sizeof(buf)) - 1;
- sprintf(buf, "%.*d", n, 0);
- return buf;
- }
- else
- return "0";
- }
- else {
- buf[0] = format;
- buf[1] = '\0';
- return buf;
- }
-}
-
-const char *general_reg::get_format()
-{
- return number_format_to_ascii(format, width);
-}
-
-class number_reg : public general_reg {
- units value;
-public:
- number_reg();
- int get_value(units *);
- void set_value(units);
-};
-
-number_reg::number_reg() : value(0)
-{
-}
-
-int number_reg::get_value(units *res)
-{
- *res = value;
- return 1;
-}
-
-void number_reg::set_value(units n)
-{
- value = n;
-}
-
-variable_reg::variable_reg(units *p) : ptr(p)
-{
-}
-
-void variable_reg::set_value(units n)
-{
- *ptr = n;
-}
-
-int variable_reg::get_value(units *res)
-{
- *res = *ptr;
- return 1;
-}
-
-void define_number_reg()
-{
- symbol nm = get_name(1);
- if (nm.is_null()) {
- skip_line();
- return;
- }
- reg *r = (reg *)number_reg_dictionary.lookup(nm);
- units v;
- units prev_value;
- if (!r || !r->get_value(&prev_value))
- prev_value = 0;
- if (get_number(&v, 'u', prev_value)) {
- if (r == 0) {
- r = new number_reg;
- number_reg_dictionary.define(nm, r);
- }
- r->set_value(v);
- if (tok.space() && has_arg() && get_number(&v, 'u'))
- r->set_increment(v);
- }
- skip_line();
-}
-
-#if 0
-void inline_define_reg()
-{
- token start;
- start.next();
- if (!start.delimiter(1))
- return;
- tok.next();
- symbol nm = get_name(1);
- if (nm.is_null())
- return;
- reg *r = (reg *)number_reg_dictionary.lookup(nm);
- if (r == 0) {
- r = new number_reg;
- number_reg_dictionary.define(nm, r);
- }
- units v;
- units prev_value;
- if (!r->get_value(&prev_value))
- prev_value = 0;
- if (get_number(&v, 'u', prev_value)) {
- r->set_value(v);
- if (start != tok) {
- if (get_number(&v, 'u')) {
- r->set_increment(v);
- if (start != tok)
- warning(WARN_DELIM, "closing delimiter does not match");
- }
- }
- }
-}
-#endif
-
-void set_number_reg(symbol nm, units n)
-{
- reg *r = (reg *)number_reg_dictionary.lookup(nm);
- if (r == 0) {
- r = new number_reg;
- number_reg_dictionary.define(nm, r);
- }
- r->set_value(n);
-}
-
-reg *lookup_number_reg(symbol nm)
-{
- reg *r = (reg *)number_reg_dictionary.lookup(nm);
- if (r == 0) {
- warning(WARN_REG, "number register `%1' not defined", nm.contents());
- r = new number_reg;
- number_reg_dictionary.define(nm, r);
- }
- return r;
-}
-
-void alter_format()
-{
- symbol nm = get_name(1);
- if (nm.is_null()) {
- skip_line();
- return;
- }
- reg *r = (reg *)number_reg_dictionary.lookup(nm);
- if (r == 0) {
- r = new number_reg;
- number_reg_dictionary.define(nm, r);
- }
- tok.skip();
- char c = tok.ch();
- if (csdigit(c)) {
- int n = 0;
- do {
- ++n;
- tok.next();
- } while (csdigit(tok.ch()));
- r->alter_format('1', n);
- }
- else if (c == 'i' || c == 'I' || c == 'a' || c == 'A')
- r->alter_format(c);
- else if (tok.newline() || tok.eof())
- warning(WARN_MISSING, "missing number register format");
- else
- error("bad number register format (got %1)", tok.description());
- skip_line();
-}
-
-void remove_reg()
-{
- for (;;) {
- symbol s = get_name();
- if (s.is_null())
- break;
- number_reg_dictionary.remove(s);
- }
- skip_line();
-}
-
-void alias_reg()
-{
- symbol s1 = get_name(1);
- if (!s1.is_null()) {
- symbol s2 = get_name(1);
- if (!s2.is_null()) {
- if (!number_reg_dictionary.alias(s1, s2))
- warning(WARN_REG, "number register `%1' not defined", s2.contents());
- }
- }
- skip_line();
-}
-
-void rename_reg()
-{
- symbol s1 = get_name(1);
- if (!s1.is_null()) {
- symbol s2 = get_name(1);
- if (!s2.is_null())
- number_reg_dictionary.rename(s1, s2);
- }
- skip_line();
-}
-
-void print_number_regs()
-{
- object_dictionary_iterator iter(number_reg_dictionary);
- reg *r;
- symbol s;
- while (iter.get(&s, (object **)&r)) {
- assert(!s.is_null());
- errprint("%1\t", s.contents());
- const char *p = r->get_string();
- if (p)
- errprint(p);
- errprint("\n");
- }
- fflush(stderr);
- skip_line();
-}
-
-void init_reg_requests()
-{
- init_request("rr", remove_reg);
- init_request("nr", define_number_reg);
- init_request("af", alter_format);
- init_request("aln", alias_reg);
- init_request("rnn", rename_reg);
- init_request("pnr", print_number_regs);
-}
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