[PATCH v2 0/2] improve-wincred-compatibility

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Changes since initial version (see attached diff for details):
- split in two patches
- removed unused variables
- improved the dll error message
- changed ?: to if else
- added comments

Also available here:
https://github.com/kblees/git/tree/kb/improve-wincred-compatibility-v2
git pull git://github.com/kblees/git.git kb/improve-wincred-compatibility-v2

Karsten Blees (2):
  wincred: accept CRLF on stdin to simplify console usage
  wincred: improve compatibility with windows versions

 .../credential/wincred/git-credential-wincred.c    | 206 ++++++++-------------
 1 file changed, 75 insertions(+), 131 deletions(-)


> git diff kb/improve-wincred-compatibility..kb/improve-wincred-compatibility-v2
diff --git a/contrib/credential/wincred/git-credential-wincred.c b/contrib/credential/wincred/git-credential-wincred.c
index 3464080..dac19ea 100644
--- a/contrib/credential/wincred/git-credential-wincred.c
+++ b/contrib/credential/wincred/git-credential-wincred.c
@@ -66,7 +66,7 @@ typedef BOOL (WINAPI *CredEnumerateWT)(LPCWSTR, DWORD, DWORD *,
 typedef VOID (WINAPI *CredFreeT)(PVOID);
 typedef BOOL (WINAPI *CredDeleteWT)(LPCWSTR, DWORD, DWORD);
 
-static HMODULE advapi, credui;
+static HMODULE advapi;
 static CredWriteWT CredWriteW;
 static CredEnumerateWT CredEnumerateW;
 static CredFreeT CredFree;
@@ -77,7 +77,7 @@ static void load_cred_funcs(void)
 	/* load DLLs */
 	advapi = LoadLibrary("advapi32.dll");
 	if (!advapi)
-		die("failed to load DLLs");
+		die("failed to load advapi32.dll");
 
 	/* get function pointers */
 	CredWriteW = (CredWriteWT)GetProcAddress(advapi, "CredWriteW");
@@ -107,14 +107,34 @@ static void write_item(const char *what, LPCWSTR wbuf, int wlen)
 	free(buf);
 }
 
+/*
+ * Match an (optional) expected string and a delimiter in the target string,
+ * consuming the matched text by updating the target pointer.
+ */
 static int match_part(LPCWSTR *ptarget, LPCWSTR want, LPCWSTR delim)
 {
-	LPCWSTR start = *ptarget;
-	LPCWSTR end = *delim ? wcsstr(start, delim) : start + wcslen(start);
-	int len = end ? end - start : wcslen(start);
+	LPCWSTR delim_pos, start = *ptarget;
+	int len;
+
+	/* find start of delimiter (or end-of-string if delim is empty) */
+	if (*delim)
+		delim_pos = wcsstr(start, delim);
+	else
+		delim_pos = start + wcslen(start);
+
+	/*
+	 * match text up to delimiter, or end of string (e.g. the '/' after
+	 * host is optional if not followed by a path)
+	 */
+	if (delim_pos)
+		len = delim_pos - start;
+	else
+		len = wcslen(start);
+
 	/* update ptarget if we either found a delimiter or need a match */
-	if (end || want)
-		*ptarget = end ? end + wcslen(delim) : start + len;
+	if (delim_pos || want)
+		*ptarget = delim_pos ? delim_pos + wcslen(delim) : start + len;
+
 	return !want || (!wcsncmp(want, start, len) && !want[len]);
 }
 
@@ -157,9 +177,6 @@ static void get_credential(void)
 static void store_credential(void)
 {
 	CREDENTIALW cred;
-	BYTE *auth_buf;
-	DWORD auth_buf_size = 0;
-	CREDENTIAL_ATTRIBUTEW attrs[CRED_MAX_ATTRIBUTES];
 
 	if (!wusername || !password)
 		return;

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