[PATCH v2 0/1] MR1517: comsvcs: Use the iswxdigit function instead of reimplementing it.

[Alex Henrie (＠alexhenrie)]

--
  v2: comsvcs: Use the isxdigit function instead of reimplementing it.

https://gitlab.winehq.org/wine/wine/-/merge_requests/1517

[PATCH v2 1/1] comsvcs: Use the isxdigit function instead of reimplementing it.

[Alex Henrie]

From: Alex Henrie

---
 dlls/comsvcs/main.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/dlls/comsvcs/main.c b/dlls/comsvcs/main.c
index 43803f60632..f6f5a2d624d 100644
--- a/dlls/comsvcs/main.c
+++ b/dlls/comsvcs/main.c
@@ -781,12 +781,6 @@ static const BYTE guid_conv_table[256] =
     0, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf                             /* 0x60 */
 };

-static BOOL is_valid_hex(WCHAR c)
-{
-    return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') ||
-        (c >= 'A' && c <= 'F');
-}
-
 static HRESULT guid_from_string(const WCHAR *s, GUID *ret)
 {
     BOOL has_brackets;
@@ -803,7 +797,7 @@ static HRESULT guid_from_string(const WCHAR *s, GUID *ret)

for (i = 0; i < 8; i++)
     {
-        if (!is_valid_hex(s[i])) return FALSE;
+        if (!isxdigit(s[i])) return FALSE;
         guid.Data1 = (guid.Data1 << 4) | guid_conv_table[s[i]];
     }
     s += 8;
@@ -813,7 +807,7 @@ static HRESULT guid_from_string(const WCHAR *s, GUID *ret)

for (i = 0; i < 4; i++)
     {
-        if (!is_valid_hex(s[0])) return FALSE;
+        if (!isxdigit(s[0])) return FALSE;
         guid.Data2 = (guid.Data2 << 4) | guid_conv_table[s[i]];
     }
     s += 4;
@@ -823,7 +817,7 @@ static HRESULT guid_from_string(const WCHAR *s, GUID *ret)

for (i = 0; i < 4; i++)
     {
-        if (!is_valid_hex(s[i])) return FALSE;
+        if (!isxdigit(s[i])) return FALSE;
         guid.Data3 = (guid.Data3 << 4) | guid_conv_table[s[i]];
     }
     s += 4;
@@ -838,7 +832,7 @@ static HRESULT guid_from_string(const WCHAR *s, GUID *ret)
             if (s[i] != '-') return FALSE;
             i++;
         }
-        if (!is_valid_hex(s[i]) || !is_valid_hex(s[i+1])) return FALSE;
+        if (!isxdigit(s[i]) || !isxdigit(s[i+1])) return FALSE;
         guid.Data4[i / 2] = guid_conv_table[s[i]] << 4 | guid_conv_table[s[i+1]];
     }
     s += 17;

[PATCH v2 0/1] MR1517: comsvcs: Use the isxdigit function instead of reimplementing it. - closed

[Alexandre Julliard (＠julliard)]

This merge request was closed by Alexandre Julliard.

[PATCH v2 0/1] MR1517: comsvcs: Use the isxdigit function instead of reimplementing it.

[Alexandre Julliard (＠julliard)]

It would need to be iswxdigit(), but that's not safe either since it can return true for more than just ASCII chars.