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Re: cvs 1.11.2 rdiff fails with binary files


From: tony
Subject: Re: cvs 1.11.2 rdiff fails with binary files
Date: Fri, 22 Nov 2002 10:31:52 -0500
User-agent: Internet Messaging Program (IMP) 3.1

> Tony,
> 
> Assuming Larry doesn't want to argue with me, could you resubmit this
> 
> patch with a test case and maybe documentation, as per the HACKING
> file 
> in the top level of the source distribution?
> 
> Thanks,
> 
> Derek


Once again, the test case went at the end of the "rdiff" section in sanity.sh 
for testing, but it creates its own repository so it should be able to go 
anywhere (in the binfiles section, perhaps?)

Cheers,
Tony


***CHANGELOG***

NEWS: Note that rdiff now handles binary files in the same way as the patch 
utility. 

***NEWS***

* The "cvs rdiff" command no longer attempts to diff files marked as binary.  
Instead, it prints a "Binary files foo:1.1 and foo:1.2 differ" message, just 
like the patch utility.


***PATCH***

diff -urN cvs-1.11.1p1-orig/src/patch.c cvs-1.11.1p1-apc/src/patch.c
--- cvs-1.11.1p1-orig/src/patch.c       Tue Apr 24 14:14:53 2001
+++ cvs-1.11.1p1-apc/src/patch.c        Wed Oct 30 15:32:38 2002
@@ -590,6 +592,28 @@
        case 0:                         /* nothing to do */
            break;
        case 1:
+           /* If files differ and are marked as binary, just output message */
+           if (rcsfile->expand != NULL && strcmp(rcsfile->expand, "b") == 0)
+           {
+               cvs_output("Binary files ", 0);
+               cvs_output(finfo->fullname, 0);
+               cvs_output(":", 1);
+               if (vers_tag)
+                   cvs_output(vers_tag, 0);
+               else
+                   cvs_output("missing", 0);
+               cvs_output(" and ", 0);
+               cvs_output(finfo->fullname, 0);
+               cvs_output(":", 1);
+               if (vers_head) 
+                   cvs_output(vers_head, 0);
+               else
+                   cvs_output("removed", 0);
+               cvs_output(" differ",0);
+               cvs_output("\n",1);
+               break;
+           }
+
            /*
             * The two revisions are really different, so read the first two
             * lines of the diff output file, and munge them to include more


***TEST***

                # APC - test rdiff_skip_binary
                # rdiff should warn and skip binary files like patch does
                mkdir testimport
                cd testimport
                echo "not a real binary file" > fakebinary
                ${AWK} 'BEGIN { printf "address@hidden", 2, 10, 137, 13, 10 }' \
                    </dev/null | ${TR} '@' '\000' > realbinary
                echo "just a text file" > textfile
                dotest_sort rdiff-10.0-skip_binary-do_import \
                  "${testcvs} import -I ! -m skip-binary-import 
trdiff_skip_binary TRDIFF T10" \
'

N trdiff_skip_binary/fakebinary
N trdiff_skip_binary/realbinary
N trdiff_skip_binary/textfile
No conflicts created by this import'
                dotest rdiff-10.1-skip_binary-do_checkout \
                  "${testcvs} co trdiff_skip_binary " \
"${PROG}"' [a-z]*: Updating trdiff_skip_binary
U trdiff_skip_binary/fakebinary
U trdiff_skip_binary/realbinary
U trdiff_skip_binary/textfile'
                cd trdiff_skip_binary
                dotest rdiff-10.3-skip_binary-do_makebinary \
                  "${testcvs} admin -kb fakebinary realbinary" \
"RCS file: ${CVSROOT_DIRNAME}/trdiff_skip_binary/fakebinary,v
done
RCS file: ${CVSROOT_DIRNAME}/trdiff_skip_binary/realbinary,v
done"
                dotest rdiff-10.4-skip_binary-do_update \
                  "${testcvs} update" \
"${PROG}"' [a-z]*: Updating \.
U fakebinary
U realbinary'
                cat realbinary realbinary > realbinary.new
                mv realbinary.new realbinary
                echo "more text" >> fakebinary
                echo "more text" >> textfile
                dotest rdiff-10.4-skip_binary-do_commit \
                  "${testcvs} commit -m skip-binary-commit" \
"${PROG}"' [a-z]*: Examining \.
Checking in fakebinary;
'"${CVSROOT_DIRNAME}"'/trdiff_skip_binary/fakebinary,v  <--  fakebinary
new revision: 1\.2; previous revision: 1\.1
done
Checking in realbinary;
'"${CVSROOT_DIRNAME}"'/trdiff_skip_binary/realbinary,v  <--  realbinary
new revision: 1\.2; previous revision: 1\.1
done
Checking in textfile;
'"${CVSROOT_DIRNAME}"'/trdiff_skip_binary/textfile,v  <--  textfile
new revision: 1\.2; previous revision: 1\.1
done'
                dotest rdiff-10.5-reset_ts-do_rdiff \
                  "${testcvs} rdiff -u -r1\.1 trdiff_skip_binary" \
"${PROG}"' [a-z]*: Diffing trdiff_skip_binary
Binary files trdiff_skip_binary/fakebinary:1\.1 and 
trdiff_skip_binary/fakebinary:1\.2 differ
Binary files trdiff_skip_binary/realbinary:1\.1 and 
trdiff_skip_binary/realbinary:1\.2 differ
Index: trdiff_skip_binary/textfile
diff -u trdiff_skip_binary/textfile:1\.1 trdiff_skip_binary/textfile:1\.2
--- trdiff_skip_binary/textfile:1\.1    .*
+++ trdiff_skip_binary/textfile .*
@@ -1 +1,2 @@
 just a text file
+more text'
                cd ../..
                rm -r testimport
                rm -rf ${CVSROOT_DIRNAME}/trdiff_skip_binary





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