From: Alexey Tourbin <at@altlinux.ru>
To: ALT Devel discussion list <devel@lists.altlinux.org>
Subject: Re: [devel] gb-task-repo-vercheck (vercheck): Use rpmevrcmp
Date: Sat, 28 Feb 2009 20:36:09 +0300
Message-ID: <20090228173609.GD9851@altlinux.org> (raw)
In-Reply-To: <20090216232939.GA11469@wo.int.altlinux.org>
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On Tue, Feb 17, 2009 at 02:29:39AM +0300, Dmitry V. Levin wrote:
> On Mon, Feb 16, 2009 at 04:05:08PM +0300, Alexey Tourbin wrote:
> > On Mon, Feb 16, 2009 at 03:23:12PM +0300, Dmitry V. Levin wrote:
> > > On Mon, Feb 16, 2009 at 11:16:51AM +0300, Alexey Tourbin wrote:
> > > [...]
> > > > 0:1.0-alt1 cmp 1.0-alt2 should yield 1.
> > >
> > > Why?
> > >
> > > > Zero serial is greater than no serial.
> > >
> > > Why?
> >
> > This is because how rpm-4.0 works.
> >
> > lib/psm.c:
> > 72 int rpmVersionCompare(Header first, Header second)
>
> If rpmVersionCompare() works this way, why rpmEVRcmp() doesn't work the
> same way? Let's fix librpm rather than multiply workarounds.
apt-pkg/rpm/rpmversion.cc:
94 // ---------------------------------------------------------------------
95 /* This fragments the version into E:V-R triples and compares each
96 portion separately. */
97 int rpmVersioningSystem::DoCmpVersion(const char *A,const char *AEnd,
98 const char *B,const char *BEnd)
99 {
100 char *AE, *AV, *AR;
101 char *BE, *BV, *BR;
102 int rc = 0;
103 ParseVersion(A, AEnd, &AE, &AV, &AR);
104 ParseVersion(B, BEnd, &BE, &BV, &BR);
105 if (AE && !BE)
106 rc = 1;
107 else if (!AE && BE)
108 rc = -1;
109 else if (AE && BE)
110 {
111 int AEi, BEi;
112 AEi = atoi(AE);
113 BEi = atoi(BE);
114 if (AEi < BEi)
115 rc = -1;
116 else if (AEi > BEi)
117 rc = 1;
118 }
119 if (rc == 0)
120 {
121 rc = rpmvercmp(AV, BV);
122 if (rc == 0) {
123 if (AR && !BR)
124 rc = 1;
125 else if (!AR && BR)
126 rc = -1;
127 else if (AR && BR)
128 rc = rpmvercmp(AR, BR);
129 }
130 }
131 free(AE);free(AV);free(AR);;
132 free(BE);free(BV);free(BR);;
133 return rc;
134 }
vercmp seems to be reliable.
evrcmp is a "sdelai sam" thing.
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prev parent reply other threads:[~2009-02-28 17:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-16 8:16 Alexey Tourbin
2009-02-16 12:23 ` Dmitry V. Levin
2009-02-16 13:05 ` Alexey Tourbin
2009-02-16 23:29 ` Dmitry V. Levin
2009-02-28 14:17 ` Alexey Tourbin
2009-02-28 22:37 ` Dmitry V. Levin
2009-02-28 17:36 ` Alexey Tourbin [this message]
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