+/*
+ * RCS rcsclean operation
+ */
+
+static char rcsid[]=
+"$Header $ Purdue CS";
+/*****************************************************************************
+ * remove unneded working files
+ *****************************************************************************
+ */
+
+/* Copyright (C) 1982, 1988, 1989 Walter Tichy
+ * All rights reserved.
+ *
+ * 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 Walter Tichy.
+ * 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.
+ *
+ * Report all problems and direct all questions to:
+ * rcs-bugs@cs.purdue.edu
+ *
+
+
+
+
+
+
+
+*/
+
+
+
+
+/* $Log: rcsclean.c,v $
+ * Revision 4.4 89/05/01 15:12:21 narten
+ * changed copyright header to reflect current distribution rules
+ *
+ * Revision 4.3 88/11/08 15:59:54 narten
+ * removed reference to TARGETDIR
+ *
+ * Revision 4.2 87/10/18 10:30:43 narten
+ * Updating version numbers. Changes relative to 1.1 are actually
+ * relative to 4.1
+ *
+ * Revision 1.2 87/09/24 13:59:13 narten
+ * Sources now pass through lint (if you ignore printf/sprintf/fprintf
+ * warnings)
+ *
+ * Revision 1.1 84/01/23 14:50:16 kcs
+ * Initial revision
+ *
+ * Revision 4.1 83/12/15 12:26:18 wft
+ * Initial revision.
+ *
+ */
+#include "rcsbase.h"
+#define ERRCODE 2 /*error code for exit status */
+static char rcsbaseid[] = RCSBASE;
+
+extern int cleanup(); /* cleanup after signals */
+extern char * mktempfile(); /*temporary file name generator */
+extern int fterror(); /*forward for special fatal error func. */
+extern struct hshentry * genrevs(); /*generate delta numbers */
+extern int nerror; /*counter for errors */
+extern int quietflag; /*suppresses diagnostics */
+extern FILE * finptr; /* RCS input file */
+extern FILE * fopen();
+
+char *RCSfilename;
+char *workfilename;
+char * tempfile;
+FILE * file1, * file2; /*file descriptors for comparison */
+
+main (argc, argv)
+int argc; char **argv;
+{
+ char * cmdusage;
+ char command[NCPPN+revlength+40];
+ char * rev; /* revision number from command line */
+ char numericrev[revlength]; /* holds expanded revision number */
+ int revnums; /* number of -r options */
+ struct hshentry * gendeltas[hshsize];/*stores deltas to be generated*/
+ struct hshentry * target;
+ int filecounter;
+ register int c1; /* reading input */
+ int result; /* result of comparison */
+ int pairresult; /* reulst of pairfilenames */
+
+ catchints();
+ cmdid = "rcsclean";
+ cmdusage = "command format:\n rcsclean [-rrev] file";
+ filecounter=revnums=0;
+ quietflag=true; /* default no diagnostics */
+ while (--argc,++argv, argc>=1 && ((*argv)[0] == '-')) {
+ switch ((*argv)[1]) {
+ case 'r':
+ revno: if ((*argv)[2]!='\0') {
+ if (revnums==0) {
+ rev= *argv+2; revnums=1;
+ } else {
+ fterror("too many revision numbers");
+ }
+ } /* do nothing for empty -r */
+ break;
+ case 'D': /* debug option */
+ quietflag = false;
+ break;
+
+ default:
+ fterror("unknown option: %s\n%s", *argv,cmdusage);
+ };
+ } /* end of option processing */
+
+ if (argc<1) fterror("No input file\n%s",cmdusage);
+
+ /* now handle all filenames */
+ do {
+ finptr=NULL;
+ pairresult=pairfilenames(argc,argv,false,false);
+
+ if (pairresult==0) continue; /* error */
+ if (!(access(workfilename,4)==0)) {
+ diagnose("Can't open %s",workfilename);
+ continue;
+ } elsif (pairresult == -1) {
+ warn("Can't find RCS file for %s",workfilename);
+ continue;
+ }
+ diagnose("RCS file: %s",RCSfilename);
+ if (!trysema(RCSfilename,false)) continue; /* give up */
+
+
+ gettree(); /* reads in the delta tree */
+
+ if (Head==nil) {
+ error("no revisions present");
+ continue;
+ }
+ if (revnums==0)
+ rev=(Dbranch!=nil?Dbranch->num:Head->num); /* default rev1 */
+
+ if (!expandsym(rev,numericrev)) continue;
+ if (!(target=genrevs(numericrev,nil,nil,nil,gendeltas))) continue;
+
+ tempfile=mktempfile("/tmp/",TMPFILE1);
+ diagnose("retrieving revision %s",target->num);
+ VOID sprintf(command,"%s -q -p%s %s > %s\n",
+ CO ,target->num,RCSfilename,tempfile);
+ if (system(command)){
+ error("co failed");
+ continue;
+ }
+ /* now do comparison */
+ if ((file1=fopen(tempfile,"r"))==NULL) {
+ error("Can't open checked out file %s",tempfile);
+ continue;
+ }
+ if ((file2=fopen(workfilename,"r"))==NULL) {
+ error("Can't open %s",workfilename);
+ continue;
+ }
+ result=1;
+ while ((c1=getc(file1))==getc(file2)) {
+ if (c1==EOF) {
+ /* identical files; can remove working file */
+ result=0;
+ diagnose("files identical; %s removed",workfilename);
+ if (unlink(workfilename)!=0) {
+ error("Can't unlink %s",workfilename);
+ }
+ break;
+ }
+ }
+ fclose(file1); fclose(file2);
+
+ if (result==1) diagnose ("files different");
+
+
+ } while (cleanup(),
+ ++argv, --argc >=1);
+
+
+ if (nerror>0) {
+ exit(ERRCODE);
+ } else {
+ exit(result);
+ }
+
+}
+
+
+fterror(e, e1, e2)
+char * e, * e1, * e2;
+/* prints error message and terminates program with ERRCODE */
+{ nerror++;
+ VOID fprintf(stderr,"%s error: ",cmdid);
+ VOID fprintf(stderr,e, e1, e2);
+ VOID fprintf(stderr,"\n%s aborted\n",cmdid);
+ VOID cleanup();
+ exit(ERRCODE);
+}
+
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