| 62 | } |
| 63 | |
| 64 | _Must_inspect_result_ |
| 65 | static inline HRESULT StringCchCopyA( |
| 66 | _Out_writes_(cchDest) _Always_(_Post_z_) LPSTR pszDest, |
| 67 | _In_ size_t cchDest, |
| 68 | _In_ LPCSTR pszSrc) |
| 69 | { |
| 70 | HRESULT hr = S_OK; |
| 71 | |
| 72 | if (cchDest == 0) { |
| 73 | // can not null terminate a zero-byte dest buffer |
| 74 | hr = ERROR_INVALID_PARAMETER; |
| 75 | } |
| 76 | else { |
| 77 | while (cchDest && (*pszSrc != '\0')) { |
| 78 | *pszDest++ = *pszSrc++; |
| 79 | cchDest--; |
| 80 | } |
| 81 | |
| 82 | if (cchDest == 0) { |
| 83 | // we are going to truncate pszDest |
| 84 | pszDest--; |
| 85 | hr = ERROR_INVALID_PARAMETER; |
| 86 | } |
| 87 | |
| 88 | *pszDest= '\0'; |
| 89 | } |
| 90 | |
| 91 | return hr; |
| 92 | } |
| 93 | |
| 94 | _Must_inspect_result_ |
| 95 | static inline HRESULT StringCchCatA( |
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