On Thu, Mar 26, 2015 at 01:25:19AM +0100, Mariusz Szczepańczyk wrote:
> From: Lukasz Marek <lukasz.m.lu...@gmail.com>
>
> Convinient function to build paths.
> ---
> libavutil/avstring.c | 43 +++++++++++++++++++++++++++++++++++++++++++
> libavutil/avstring.h | 10 ++++++++++
> tests/ref/fate/avstring | 9 +++++++++
> 3 files changed, 62 insertions(+)
>
> diff --git a/libavutil/avstring.c b/libavutil/avstring.c
> index 25c65b4..f105aa7 100644
> --- a/libavutil/avstring.c
> +++ b/libavutil/avstring.c
> @@ -269,6 +269,35 @@ const char *av_dirname(char *path)
> return path;
> }
>
> +char *av_append_path_component(const char *path, const char *component)
> +{
> + size_t p_len, c_len;
> + char *fullpath;
> +
> + if (!path)
> + return component ? av_strdup(component) : NULL;
> + if (!component)
> + return av_strdup(path);
> +
> + p_len = strlen(path);
> + c_len = strlen(component);
> + fullpath = malloc(p_len + c_len + 2);
av_malloc()
> + if (fullpath) {
> + if (p_len) {
> + strcpy(fullpath, path);
av_strlcpy() is more robust/secure
> + if (c_len) {
> + if (fullpath[p_len - 1] != '/' && component[0] != '/')
> + fullpath[p_len++] = '/';
> + else if (fullpath[p_len - 1] == '/' && component[0] == '/')
> + p_len--;
> + }
> + }
> + strcpy(&fullpath[p_len], component);
av_strlcpy()
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Old school: Use the lowest level language in which you can solve the problem
conveniently.
New school: Use the highest level language in which the latest supercomputer
can solve the problem without the user falling asleep waiting.
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