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-rw-r--r--gnu/usr.bin/groff/eqn/main.cc352
1 files changed, 0 insertions, 352 deletions
diff --git a/gnu/usr.bin/groff/eqn/main.cc b/gnu/usr.bin/groff/eqn/main.cc
deleted file mode 100644
index 534b7f86d53b..000000000000
--- a/gnu/usr.bin/groff/eqn/main.cc
+++ /dev/null
@@ -1,352 +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 "eqn.h"
-#include "stringclass.h"
-#include "device.h"
-#include "searchpath.h"
-#include "macropath.h"
-
-#define STARTUP_FILE "eqnrc"
-
-extern int yyparse();
-
-static char *delim_search(char *, int);
-static int inline_equation(FILE *, string &, string &);
-
-char start_delim = '\0';
-char end_delim = '\0';
-int non_empty_flag;
-int inline_flag;
-int draw_flag = 0;
-int one_size_reduction_flag = 0;
-int compatible_flag = 0;
-int no_newline_in_delim_flag = 0;
-
-int read_line(FILE *fp, string *p)
-{
- p->clear();
- int c = -1;
- while ((c = getc(fp)) != EOF) {
- if (!illegal_input_char(c))
- *p += char(c);
- else
- error("illegal input character code `%1'", c);
- if (c == '\n')
- break;
- }
- current_lineno++;
- return p->length() > 0;
-}
-
-void do_file(FILE *fp, const char *filename)
-{
- string linebuf;
- string str;
- printf(".lf 1 %s\n", filename);
- current_filename = filename;
- current_lineno = 0;
- while (read_line(fp, &linebuf)) {
- if (linebuf.length() >= 4
- && linebuf[0] == '.' && linebuf[1] == 'l' && linebuf[2] == 'f'
- && (linebuf[3] == ' ' || linebuf[3] == '\n' || compatible_flag)) {
- put_string(linebuf, stdout);
- linebuf += '\0';
- if (interpret_lf_args(linebuf.contents() + 3))
- current_lineno--;
- }
- else if (linebuf.length() >= 4
- && linebuf[0] == '.'
- && linebuf[1] == 'E'
- && linebuf[2] == 'Q'
- && (linebuf[3] == ' ' || linebuf[3] == '\n' || compatible_flag)) {
- put_string(linebuf, stdout);
- int start_lineno = current_lineno + 1;
- str.clear();
- for (;;) {
- if (!read_line(fp, &linebuf))
- fatal("end of file before .EN");
- if (linebuf.length() >= 3 && linebuf[0] == '.' && linebuf[1] == 'E') {
- if (linebuf[2] == 'N'
- && (linebuf.length() == 3 || linebuf[3] == ' '
- || linebuf[3] == '\n' || compatible_flag))
- break;
- else if (linebuf[2] == 'Q' && linebuf.length() > 3
- && (linebuf[3] == ' ' || linebuf[3] == '\n'
- || compatible_flag))
- fatal("nested .EQ");
- }
- str += linebuf;
- }
- str += '\0';
- start_string();
- init_lex(str.contents(), current_filename, start_lineno);
- non_empty_flag = 0;
- inline_flag = 0;
- yyparse();
- if (non_empty_flag) {
- printf(".lf %d\n", current_lineno - 1);
- output_string();
- }
- restore_compatibility();
- printf(".lf %d\n", current_lineno);
- put_string(linebuf, stdout);
- }
- else if (start_delim != '\0' && linebuf.search(start_delim) >= 0
- && inline_equation(fp, linebuf, str))
- ;
- else
- put_string(linebuf, stdout);
- }
- current_filename = 0;
- current_lineno = 0;
-}
-
-/* Handle an inline equation. Return 1 if it was an inline equation,
-0 otherwise. */
-
-static int inline_equation(FILE *fp, string &linebuf, string &str)
-{
- linebuf += '\0';
- char *ptr = &linebuf[0];
- char *start = delim_search(ptr, start_delim);
- if (!start) {
- // It wasn't a delimiter after all.
- linebuf.set_length(linebuf.length() - 1); // strip the '\0'
- return 0;
- }
- start_string();
- inline_flag = 1;
- for (;;) {
- if (no_newline_in_delim_flag && strchr(start + 1, end_delim) == 0) {
- error("missing `%1'", end_delim);
- char *nl = strchr(start + 1, '\n');
- if (nl != 0)
- *nl = '\0';
- do_text(ptr);
- break;
- }
- int start_lineno = current_lineno;
- *start = '\0';
- do_text(ptr);
- ptr = start + 1;
- str.clear();
- for (;;) {
- char *end = strchr(ptr, end_delim);
- if (end != 0) {
- *end = '\0';
- str += ptr;
- ptr = end + 1;
- break;
- }
- str += ptr;
- if (!read_line(fp, &linebuf))
- fatal("end of file before `%1'", end_delim);
- linebuf += '\0';
- ptr = &linebuf[0];
- }
- str += '\0';
- init_lex(str.contents(), current_filename, start_lineno);
- yyparse();
- start = delim_search(ptr, start_delim);
- if (start == 0) {
- char *nl = strchr(ptr, '\n');
- if (nl != 0)
- *nl = '\0';
- do_text(ptr);
- break;
- }
- }
- printf(".lf %d\n", current_lineno);
- output_string();
- restore_compatibility();
- printf(".lf %d\n", current_lineno + 1);
- return 1;
-}
-
-/* Search for delim. Skip over number register and string names etc. */
-
-static char *delim_search(char *ptr, int delim)
-{
- while (*ptr) {
- if (*ptr == delim)
- return ptr;
- if (*ptr++ == '\\') {
- switch (*ptr) {
- case 'n':
- case '*':
- case 'f':
- case 'g':
- case 'k':
- switch (*++ptr) {
- case '\0':
- case '\\':
- break;
- case '(':
- if (*++ptr != '\\' && *ptr != '\0' && *++ptr != '\\' && *ptr != '\0')
- ptr++;
- break;
- case '[':
- while (*++ptr != '\0')
- if (*ptr == ']') {
- ptr++;
- break;
- }
- break;
- default:
- ptr++;
- break;
- }
- break;
- case '\\':
- case '\0':
- break;
- default:
- ptr++;
- break;
- }
- }
- }
- return 0;
-}
-
-void usage()
-{
- fprintf(stderr,
- "usage: %s [ -rvDCNR ] -dxx -fn -sn -pn -mn -Mdir -Ts [ files ... ]\n",
- program_name);
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- program_name = argv[0];
- static char stderr_buf[BUFSIZ];
- setbuf(stderr, stderr_buf);
- int opt;
- int load_startup_file = 1;
- while ((opt = getopt(argc, argv, "DCRvd:f:p:s:m:T:M:rN")) != EOF)
- switch (opt) {
- case 'C':
- compatible_flag = 1;
- break;
- case 'R': // don't load eqnchar
- load_startup_file = 0;
- break;
- case 'M':
- macro_path.command_line_dir(optarg);
- break;
- case 'v':
- {
- extern const char *version_string;
- fprintf(stderr, "GNU eqn version %s\n", version_string);
- fflush(stderr);
- break;
- }
- case 'd':
- if (optarg[0] == '\0' || optarg[1] == '\0')
- error("-d requires two character argument");
- else if (illegal_input_char(optarg[0]))
- error("bad delimiter `%1'", optarg[0]);
- else if (illegal_input_char(optarg[1]))
- error("bad delimiter `%1'", optarg[1]);
- else {
- start_delim = optarg[0];
- end_delim = optarg[1];
- }
- break;
- case 'f':
- set_gfont(optarg);
- break;
- case 'T':
- device = optarg;
- break;
- case 's':
- if (!set_gsize(optarg))
- error("invalid size `%1'", optarg);
- break;
- case 'p':
- {
- int n;
- if (sscanf(optarg, "%d", &n) == 1)
- set_script_reduction(n);
- else
- error("bad size `%1'", optarg);
- }
- break;
- case 'm':
- {
- int n;
- if (sscanf(optarg, "%d", &n) == 1)
- set_minimum_size(n);
- else
- error("bad size `%1'", optarg);
- }
- break;
- case 'r':
- one_size_reduction_flag = 1;
- break;
- case 'D':
- warning("-D option is obsolete: use `set draw_lines 1' instead");
- draw_flag = 1;
- break;
- case 'N':
- no_newline_in_delim_flag = 1;
- break;
- case '?':
- usage();
- break;
- default:
- assert(0);
- }
- init_table(device);
- init_char_table();
- printf(".if !'\\*(.T'%s' "
- ".tm warning: %s should have been given a `-T\\*(.T' option\n",
- device, program_name);
- if (load_startup_file) {
- char *path;
- FILE *fp = macro_path.open_file(STARTUP_FILE, &path);
- if (fp) {
- do_file(fp, path);
- fclose(fp);
- a_delete path;
- }
- }
- if (optind >= argc)
- do_file(stdin, "-");
- else
- for (int i = optind; i < argc; i++)
- if (strcmp(argv[i], "-") == 0)
- do_file(stdin, "-");
- else {
- errno = 0;
- FILE *fp = fopen(argv[i], "r");
- if (!fp)
- fatal("can't open `%1': %2", argv[i], strerror(errno));
- else {
- do_file(fp, argv[i]);
- fclose(fp);
- }
- }
- if (ferror(stdout) || fflush(stdout) < 0)
- fatal("output error");
- return 0;
-}
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