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+add: LongPath CommonPrefix(9

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METANEOCORTEX\Kotti 2021-08-31 20:27:35 +02:00
parent 31de268c3f
commit 8b64416a08
1 changed files with 36 additions and 2 deletions
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38
src/PathLib.c
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@ -475,6 +475,7 @@ bool PTHAPI Path_IsPrefix(const HPATHL hprefix, const HPATHL hpth)
HPATHL hprfx_pth = Path_Allocate(NULL);
HPATHL hsrch_pth = Path_Allocate(NULL);
// TODO: need normalize here ???
Path_Canonicalize(hprfx_pth, hprefix);
Path_Canonicalize(hsrch_pth, hpth);
@ -486,6 +487,36 @@ bool PTHAPI Path_IsPrefix(const HPATHL hprefix, const HPATHL hpth)
return res;
}
// ----------------------------------------------------------------------------
size_t PTHAPI Path_CommonPrefix(const HPATHL hpth1, const HPATHL hpth2, HPATHL hpfx_out)
{
HSTRINGW hpth1_str = ToHStrgW(hpth1);
HSTRINGW hpth2_str = ToHStrgW(hpth2);
size_t ovl_cnt = min_s(StrgGetLength(hpth1_str), StrgGetLength(hpth2_str));
HSTRINGW hout_str = ToHStrgW(hpfx_out);
bool const cpy_out = (hout_str != NULL);
wchar_t* const out_buf = cpy_out ? StrgWriteAccessBuf(hout_str, ovl_cnt + 1) : NULL;
const wchar_t* p1 = StrgGet(hpth1_str);
const wchar_t* p2 = StrgGet(hpth2_str);
size_t cnt = 0;
while (p1 && p2 && (*p1 == *p2) && (cnt < ovl_cnt)) {
if (cpy_out) {
out_buf[cnt] = *p1;
}
++cnt; ++p1; ++p2;
}
if (cpy_out) {
out_buf[cnt] = L'\0';
}
return cnt;
}
// ----------------------------------------------------------------------------
// ============================================================================
@ -865,8 +896,8 @@ void PTHAPI PathAbsoluteFromApp(LPWSTR lpszSrc, LPWSTR lpszDest, const size_t cc
// PathRelativeToApp()
// Need LongPath Impl of:
// - PathRelativePathTo()
// - PathCommonPrefix()
// - PathUnExpandEnvStrings()
// - GetWindowsDirectoryW()
//
#if 0
void PTHAPI Path_RelativeToApp(const HPATHL hpth_in, HPATHL hpth_out,
@ -890,7 +921,10 @@ void PTHAPI Path_RelativeToApp(const HPATHL hpth_in, HPATHL hpth_out,
{
Path_Reset(hpth_out, PATH_CSIDL_MYDOCUMENTS);
Path_Append(hpth_out, hpth_in);
...???
//...???
}
else if (_Path_IsRelative(hpth_in) || Path_CommonPrefix(happdir_pth, wchWinDir, NULL)) {
Path_Reset(hpth_out, PathGet(hpth_in));
}