home *** CD-ROM | disk | FTP | other *** search
- // -*- 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 <stdio.h>
- #include <ctype.h>
- #include <string.h>
- #include <assert.h>
- #include <stdlib.h>
- #include <errno.h>
- #include "lib.h"
- #include "errarg.h"
- #include "error.h"
- #include "stringclass.h"
-
- int compatible_flag = 0;
-
- extern int interpret_lf_args(const char *);
-
- int do_file(const char *filename);
-
- void usage()
- {
- fprintf(stderr, "usage: %s [ -vC ] [ files ]\n", program_name);
- exit(1);
- }
-
- int main(int argc, char **argv)
- {
- program_name = argv[0];
- int opt;
- while ((opt = getopt(argc, argv, "vC")) != EOF)
- switch (opt) {
- case 'v':
- {
- extern const char *version_string;
- fprintf(stderr, "GNU soelim version %s\n", version_string);
- fflush(stderr);
- break;
- }
- case 'C':
- compatible_flag = 1;
- break;
- case '?':
- usage();
- break;
- default:
- assert(0);
- }
- int nbad = 0;
- if (optind >= argc)
- nbad += !do_file("-");
- else
- for (int i = optind; i < argc; i++)
- nbad += !do_file(argv[i]);
- if (ferror(stdout) || fflush(stdout) < 0)
- fatal("output error");
- exit(nbad != 0);
- }
-
- void set_location()
- {
- printf(".lf %d %s\n", current_lineno, current_filename);
- }
-
- void do_so(const char *line)
- {
- const char *p = line;
- while (*p == ' ')
- p++;
- string filename;
- int success = 1;
- for (const char *q = p;
- success && *q != '\0' && *q != '\n' && *q != ' ';
- q++)
- if (*q == '\\') {
- switch (*++q) {
- case 'e':
- case '\\':
- filename += '\\';
- break;
- case ' ':
- filename += ' ';
- break;
- default:
- success = 0;
- break;
- }
- }
- else
- filename += char(*q);
- if (success && filename.length() > 0) {
- filename += '\0';
- const char *fn = current_filename;
- int ln = current_lineno;
- current_lineno--;
- if (do_file(filename.contents())) {
- current_filename = fn;
- current_lineno = ln;
- set_location();
- return;
- }
- current_lineno++;
- }
- fputs(".so", stdout);
- fputs(line, stdout);
- }
-
- int do_file(const char *filename)
- {
- FILE *fp;
- if (strcmp(filename, "-") == 0)
- fp = stdin;
- else {
- errno = 0;
- fp = fopen(filename, "r");
- if (fp == 0) {
- error("can't open `%1': %2", filename, strerror(errno));
- return 0;
- }
- }
- current_filename = filename;
- current_lineno = 1;
- set_location();
- enum { START, MIDDLE, HAD_DOT, HAD_s, HAD_so, HAD_l, HAD_lf } state = START;
- for (;;) {
- int c = getc(fp);
- if (c == EOF)
- break;
- switch (state) {
- case START:
- if (c == '.')
- state = HAD_DOT;
- else {
- putchar(c);
- if (c == '\n') {
- current_lineno++;
- state = START;
- }
- else
- state = MIDDLE;
- }
- break;
- case MIDDLE:
- putchar(c);
- if (c == '\n') {
- current_lineno++;
- state = START;
- }
- break;
- case HAD_DOT:
- if (c == 's')
- state = HAD_s;
- else if (c == 'l')
- state = HAD_l;
- else {
- putchar('.');
- putchar(c);
- if (c == '\n') {
- current_lineno++;
- state = START;
- }
- else
- state = MIDDLE;
- }
- break;
- case HAD_s:
- if (c == 'o')
- state = HAD_so;
- else {
- putchar('.');
- putchar('s');
- putchar(c);
- if (c == '\n') {
- current_lineno++;
- state = START;
- }
- else
- state = MIDDLE;
- }
- break;
- case HAD_so:
- if (c == ' ' || c == '\n' || compatible_flag) {
- string line;
- for (; c != EOF && c != '\n'; c = getc(fp))
- line += c;
- current_lineno++;
- line += '\n';
- line += '\0';
- do_so(line.contents());
- state = START;
- }
- else {
- fputs(".so", stdout);
- putchar(c);
- state = MIDDLE;
- }
- break;
- case HAD_l:
- if (c == 'f')
- state = HAD_lf;
- else {
- putchar('.');
- putchar('l');
- putchar(c);
- if (c == '\n') {
- current_lineno++;
- state = START;
- }
- else
- state = MIDDLE;
- }
- break;
- case HAD_lf:
- if (c == ' ' || c == '\n' || compatible_flag) {
- string line;
- for (; c != EOF && c != '\n'; c = getc(fp))
- line += c;
- current_lineno++;
- line += '\n';
- line += '\0';
- interpret_lf_args(line.contents());
- printf(".lf%s", line.contents());
- state = START;
- }
- else {
- fputs(".lf", stdout);
- putchar(c);
- state = MIDDLE;
- }
- break;
- default:
- assert(0);
- }
- }
- switch (state) {
- case HAD_DOT:
- fputs(".\n", stdout);
- break;
- case HAD_l:
- fputs(".l\n", stdout);
- break;
- case HAD_s:
- fputs(".s\n", stdout);
- break;
- case HAD_lf:
- fputs(".lf\n", stdout);
- break;
- case HAD_so:
- fputs(".so\n", stdout);
- break;
- case MIDDLE:
- putc('\n', stdout);
- break;
- case START:
- break;
- }
- if (fp != stdin)
- fclose(fp);
- current_filename = 0;
- return 1;
- }
-