Hi Torsten,
On Mon, 26 Nov 2018, tbo...@web.de wrote:
> diff --git a/compat/cygwin.c b/compat/cygwin.c
> index b9862d606d..c4a10cb5a1 100644
> --- a/compat/cygwin.c
> +++ b/compat/cygwin.c
> @@ -1,19 +1,29 @@
> #include "../git-compat-util.h"
> #include "../cache.h"
>
> +int cygwin_skip_dos_drive_prefix(char **path)
> +{
> + int ret = has_dos_drive_prefix(*path);
> + *path += ret;
> + return ret;
> +}
> +
> int cygwin_offset_1st_component(const char *path)
> {
> - const char *pos = path;
> + char *pos = (char *)path;
> +
> /* unc paths */
> - if (is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
> + if (!skip_dos_drive_prefix(&pos) &&
> + is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
It takes a little folding and knotting of the brain to understand that
this `!skip_dos_drive_prefix(&pos)` has *nothing* to do with the comment
`unc paths` nor with the test whether the paths starts with two directory
separators.
As a consequence, I would highly suggest to turn this into:
if (skip_dos_drive_prefix(&pos))
; /* absolute path with DOS drive prefix */
/* unc paths */
else if (is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
That makes the code a lot easier to understand, and as a consequence a lot
harder to mess up in the future.
Thanks,
Dscho
> /* skip server name */
> - pos = strchr(pos + 2, '/');
> + pos = strpbrk(pos + 2, "\\/");
> if (!pos)
> return 0; /* Error: malformed unc path */
>
> do {
> pos++;
> - } while (*pos && pos[0] != '/');
> + } while (*pos && !is_dir_sep(*pos));
> }
> +
> return pos + is_dir_sep(*pos) - path;
> }
> diff --git a/compat/cygwin.h b/compat/cygwin.h
> index 8e52de4644..46f29c0a90 100644
> --- a/compat/cygwin.h
> +++ b/compat/cygwin.h
> @@ -1,2 +1,34 @@
> +#define has_dos_drive_prefix(path) \
> + (isalpha(*(path)) && (path)[1] == ':' ? 2 : 0)
> +
> +
> +int cygwin_offset_1st_component(const char *path);
> +#define offset_1st_component cygwin_offset_1st_component
> +
> +
> +#define has_dos_drive_prefix(path) \
> + (isalpha(*(path)) && (path)[1] == ':' ? 2 : 0)
> +int cygwin_skip_dos_drive_prefix(char **path);
> +#define skip_dos_drive_prefix cygwin_skip_dos_drive_prefix
> +static inline int cygwin_is_dir_sep(int c)
> +{
> + return c == '/' || c == '\\';
> +}
> +#define is_dir_sep cygwin_is_dir_sep
> +static inline char *cygwin_find_last_dir_sep(const char *path)
> +{
> + char *ret = NULL;
> + for (; *path; ++path)
> + if (is_dir_sep(*path))
> + ret = (char *)path;
> + return ret;
> +}
> +static inline void convert_slashes(char *path)
> +{
> + for (; *path; path++)
> + if (*path == '\\')
> + *path = '/';
> +}
> +#define find_last_dir_sep cygwin_find_last_dir_sep
> int cygwin_offset_1st_component(const char *path);
> #define offset_1st_component cygwin_offset_1st_component
> --
> 2.19.0.271.gfe8321ec05
>
>
