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Usenet 1994 October
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usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso
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unix
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volume21
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amd
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part01
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rcs_info.c
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1990-04-10
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95 lines
/*
* $Id: rcs_info.c,v 5.1.1.1 90/01/11 17:17:42 jsp Exp Locker: jsp $
*
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by Imperial College of Science, Technology and Medicine, London, UK.
* The names of the College and University may not be used to endorse
* or promote products derived from this software without specific
* prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* %W% (Berkeley) %G%
*/
/*
* Pretty-print some RCS information
*/
#include "am.h"
void show_rcs_info(msg, buf)
const char *msg;
char *buf;
{
/*
* Trivial fsm to print an RCS header without
* printing the RCS variables themselves.
*/
const char *p = msg;
enum rstate { Text, Header, Body, FQuit } st = Text;
while (st != FQuit) {
if (st == Text || st == Body) {
/*
* Find next $
*/
int len;
char *q = strchr(p, '$');
if (q) {
/*
* Write out upto the '$'
*/
len = q-p-(st==Body?1:0);
bcopy(p, buf, len);
/*
* Advance p
*/
p = q+1;
/*
* Switch state
*/
if (st == Body)
st = Text;
else
st = Header;
} else {
/*
* Nothing more to do, write
* out rest of line and quit
*/
len = strlen(p);
bcopy(p, buf, len);
st = FQuit;
}
buf += len;
} else if (st == Header) {
/*
* Skip past $blah: part
*/
char *q = strchr(p, ':');
if (q) {
p = q+2;
st = Body;
} else {
st = FQuit;
}
}
}
*buf = '\0';
}