Re: [PATCH virt-viewer 2/4] Add virt_viewer_compare_version()

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Hi,

On 03/08/2013 01:35 PM, Marc-André Lureau wrote:


----- Mensaje original -----
Hi,

On 03/07/2013 08:55 PM, Marc-André Lureau wrote:
---
   src/virt-viewer-util.c | 54
   ++++++++++++++++++++++++++++++++++++++++++++++++++
   src/virt-viewer-util.h |  1 +
   2 files changed, 55 insertions(+)

diff --git a/src/virt-viewer-util.c b/src/virt-viewer-util.c
index f0b1182..a32138c 100644
--- a/src/virt-viewer-util.c
+++ b/src/virt-viewer-util.c
@@ -414,6 +414,60 @@ spice_hotkey_to_gtk_accelerator(const gchar
*key)
       return accel;
   }

+/**
+ * virt_viewer_compare_version:
+ * @s1: a version-like string
+ * @s2: a version-like string
+ *
+ * Compare two version-like strings: 1.1 > 1.0, 1.0.1 > 1.0, 1.0c

+ * 1.0a, but 1.0rc < 1.0 for example.

Ugh, no lets not do that please. Example if I read the above comment
and
the code correctly then 1.0a < 1.0 which will surprise some people.

We are not trying to be generic. We are just trying to fit with virt-viewer visioning.

AFAIK there has never been an rc or a or such release for virt-viewer.

Since string suffix is quite common, especially the "rc" case, the function is fine too.

string suffix is bad news, very bad news. Please read:
https://fedoraproject.org/wiki/Packaging:NamingGuidelines#Non-Numeric_Version_in_Release

Then read it again, rinse repeat until you fully understand, then
you will hopefully see that having non numeric characters in a version
is just a very very bad idea. I've packaged and maintain circa 200
pkgs, please trust me when it comes to things like this I speak from experience here,
long and painful experience.

Now if we never use string suffix, then that shouldn't change the result of this function.

I would prefer this function to simply do a g_return_if_fail on string suffixes, so
that if we ever encounter them it will return 0 and a loud complaint will get logged.

Regards,

Hans

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