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- #ifndef lint
- static char Rcs_Id[] =
- "$Id: fix8bit.c,v 1.3 1994/01/25 07:12:26 geoff Exp $";
- #endif
-
- /*
- * Copyright 1993, Geoff Kuenning, Granada Hills, CA
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All modifications to the source code must be clearly marked as
- * such. Binary redistributions based on modified source code
- * must be clearly marked as modified versions in the documentation
- * and/or other materials provided with the distribution.
- * 4. All advertising materials mentioning features or use of this software
- * must display the following acknowledgment:
- * This product includes software developed by Geoff Kuenning and
- * other unpaid contributors.
- * 5. The name of Geoff Kuenning may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY GEOFF KUENNING AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL GEOFF KUENNING OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- /*
- * This is a stupid little program that can be used to convert 8-bit
- * characters to and from backslashed escape sequences. It is usually
- * more efficient to do this to affix files than to uuencode them for
- * transport. Ispell will read affix files in either format, so it is
- * merely personal preference as to which form to use.
- *
- * Usage:
- *
- * fix8bit {-7 | -8} < infile > outfile
- *
- * One of -7 and -8 must be specified. If -7 is given, any character
- * sequence that is not standard printable ASCII will be converted
- * into a backslashed octal sequence. If -8 is given, any backslashed
- * octal or hex sequence will be converted into the equivalent 8-bit
- * character.
- *
- * This program is not very smart. In particular, it makes no attempt
- * to understand comments, quoted strings, or similar constructs in
- * which you might not want conversion to take place. I suggest that
- * you "diff" the input against the output, and if you don't like the
- * result, correct it by hand.
- */
-
- /*
- * $Log: fix8bit.c,v $
- * Revision 1.3 1994/01/25 07:12:26 geoff
- * Get rid of all old RCS log lines in preparation for the 3.1 release.
- *
- */
-
- #include <stdio.h>
-
- int main (); /* Convert to/from 8-bit sequences */
- static void usage (); /* Issue a usage message */
- static void to7bit (); /* Convert from 8-bit sequences */
- static void to8bit (); /* Convert to 8-bit sequences */
-
- extern void exit (); /* Terminate program */
-
- int main (argc, argv) /* Convert to/from 8-bit sequences */
- int argc; /* Argument count */
- char * argv[]; /* Argument vector */
- {
-
- if (argc != 2)
- usage ();
- if (strcmp (argv[1], "-7") == 0)
- to7bit ();
- else if (strcmp (argv[1], "-8") == 0)
- to8bit ();
- else
- usage ();
- return 0;
- }
-
- static void usage () /* Issue a usage message */
- {
-
- (void) fprintf (stderr, "Usage: fix8bit {-7 | -8} < infile > outfile\n");
- exit (1);
- }
-
- static void to7bit () /* Convert from 8-bit sequences */
- {
- int ch; /* Next character read from input */
-
- while ((ch = getchar ()) != EOF)
- {
- ch &= 0xFF;
- if (ch >= 0200)
- (void) printf ("\\%3.3o", (unsigned) ch);
- else
- (void) putchar (ch);
- }
- }
-
- static void to8bit () /* Convert to 8-bit sequences */
- {
- int backch; /* Backslashed character being built */
- int ch; /* Next character read from input */
-
- while ((ch = getchar ()) != EOF)
- {
- ch &= 0xFF;
- if (ch != '\\')
- (void) putchar (ch);
- else
- {
- /*
- * Collect a backslashed character.
- */
- ch = getchar ();
- switch (ch)
- {
- case EOF:
- (void) putchar ('\\');
- return;
- case 'x':
- case 'X':
- backch = ch;
- ch = getchar ();
- if (ch >= '0' && ch <= '9')
- backch = ch - '0';
- else if (ch >= 'a' && ch <= 'f')
- backch = ch - 'a' + 0xA;
- else if (ch >= 'A' && ch <= 'F')
- backch = ch - 'A' + 0xA;
- else
- {
- (void) putchar ('\\');
- (void) putchar (backch);
- (void) putchar (ch);
- break;
- }
- ch = getchar ();
- if (ch >= '0' && ch <= '9')
- backch = (backch << 4) | (ch - '0');
- else if (ch >= 'a' && ch <= 'f')
- backch = (ch << 4) - 'a' + 0xA;
- else if (ch >= 'A' && ch <= 'F')
- backch = (ch << 4) - 'A' + 0xA;
- else
- {
- (void) putchar (backch);
- (void) putchar (ch);
- break;
- }
- (void) putchar (backch);
- break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- backch = ch - '0';
- ch = getchar ();
- if (ch >= '0' && ch <= '7')
- backch = (backch << 3) | (ch - '0');
- else
- {
- (void) putchar (backch);
- (void) putchar (ch);
- break;
- }
- ch = getchar ();
- if (ch >= '0' && ch <= '7')
- backch = (backch << 3) | (ch - '0');
- else
- {
- (void) putchar (backch);
- (void) putchar (ch);
- break;
- }
- (void) putchar (backch);
- break;
- break;
- default:
- (void) putchar ('\\');
- (void) putchar (ch);
- break;
- }
- }
- }
- }
-