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#include "../../git-compat-util.h"
#include "../../environment.h"
int win32_has_dos_drive_prefix(const char *path)
{
int i;
/*
* Does it start with an ASCII letter (i.e. highest bit not set),
* followed by a colon?
*/
if (!(0x80 & (unsigned char)*path))
return *path && path[1] == ':' ? 2 : 0;
/*
* While drive letters must be letters of the English alphabet, it is
* possible to assign virtually _any_ Unicode character via `subst` as
* a drive letter to "virtual drives". Even `1`, or `ä`. Or fun stuff
* like this:
*
* subst ֍: %USERPROFILE%\Desktop
*/
for (i = 1; i < 4 && (0x80 & (unsigned char)path[i]); i++)
; /* skip first UTF-8 character */
return path[i] == ':' ? i + 1 : 0;
}
int win32_skip_dos_drive_prefix(char **path)
{
int ret = has_dos_drive_prefix(*path);
*path += ret;
return ret;
}
int win32_offset_1st_component(const char *path)
{
char *pos = (char *)path;
/* unc paths */
if (!skip_dos_drive_prefix(&pos) &&
is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
/* skip server name */
pos = strpbrk(pos + 2, "\\/");
if (!pos)
return 0; /* Error: malformed unc path */
do {
pos++;
} while (*pos && !is_dir_sep(*pos));
}
return pos + is_dir_sep(*pos) - path;
}
int win32_fspathncmp(const char *a, const char *b, size_t count)
{
int diff;
for (;;) {
if (!count--)
return 0;
if (!*a)
return *b ? -1 : 0;
if (!*b)
return +1;
if (is_dir_sep(*a)) {
if (!is_dir_sep(*b))
return -1;
a++;
b++;
continue;
} else if (is_dir_sep(*b))
return +1;
diff = ignore_case ?
(unsigned char)tolower(*a) - (int)(unsigned char)tolower(*b) :
(unsigned char)*a - (int)(unsigned char)*b;
if (diff)
return diff;
a++;
b++;
}
}
int win32_fspathcmp(const char *a, const char *b)
{
return win32_fspathncmp(a, b, (size_t)-1);
}
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