Re: [PATCH] diff: generate prettier filenames when using GIT_EXTERNAL_DIFF

[David Aguilar <davvid@gmail.com>]

On Sun, May 24, 2009 at 09:44:53PM -0700, David Aguilar wrote:
> diff --git a/path.c b/path.c
> index 8a0a674..c2a0fb6 100644
> --- a/path.c
> +++ b/path.c
> @@ -140,6 +140,24 @@ int git_mkstemp(char *path, size_t len, const char *template)
>  }
>  
>  
> +/* git_mkstemp() - create tmp file with suffix honoring TMPDIR variable */
> +int git_mkstemps(char *path, size_t len, const char *template, int suffix_len)
> +{
> +	const char *tmp;
> +	size_t n;
> +
> +	tmp = getenv("TMPDIR");
> +	if (!tmp)
> +		tmp = "/tmp";
> +	n = snprintf(path, len, "%s/%s", tmp, template);
> +	if (len <= n) {
> +		errno = ENAMETOOLONG;
> +		return -1;
> +	}
> +	return mkstemps(path, suffix_len);
> +}


Lured by a mac.  I came home and I tried it on linux:

path.c:157: warning: implicit declaration of function
‘mkstemps’

Gah.
Darn you OS X and your non-portable 4.4 BSD extensions.
Sorry about that.

The original patch could do without the strbuf_detach
and free(), too.  Being tricked by an OS X manpage like
that is quite unpleasant.

mkstemp() won't do since it doesn't work with suffixes
(the templates must end with "XXXX").  I'm sure there has to
be another way, but I just can't think of it right now.

It seemed so easy at the time.
Sigh...

-- 

	David