Re: [libvirt] [PATCH 1/7] VMware ESX: Fix VMX path parsing and URL encoding
2009/9/4 Daniel Veillard <veillard(a)redhat.com>:
On Thu, Sep 03, 2009 at 06:44:47PM +0200, Matthias Bolte wrote:
> * src/esx/esx_driver.c: handle spaces in VMX file path and use a
> virBuffer to encode spaces correctly in the resulting URL
> * src/esx/esx_vi.c: include the URL in the error message in case
> of a download error
Looks fine, ACK, pushed :-)
I'm just finding hard to understand the scanf pattern,
Yes, that's a bit tricky. I'll add a comment to explain it.
sscanf() shall parse the string as '[<datastore>] <path>'.
'%as' is
similar to '%s', but sscanf() will allocate the memory for the string,
so the caller doesn't need to preallocate a buffer that's large
enough.
The s in '%as' can be replaced with a character set, e.g. [a-z].
'%a[^]%]' matches <datastore>. '[^]%]' excludes ']' from the
accepted
characters, otherwise sscanf() won't match what it should.
'%a[^\n]' matches <path>. '[^\n]' excludes '\n' from the
accepted
characters, otherwise sscanf() would only match up to the first space,
but spaces are valid in <path>.
Matthias