scripted-diff: Rename ValidAsCString to ContainsNoNUL

-BEGIN VERIFY SCRIPT-
 sed -i 's,ValidAsCString,ContainsNoNUL,g' $(git grep -l ValidAsCString)
-END VERIFY SCRIPT-

src/base58.cpp

@@ -126,7 +126,7 @@ std::string EncodeBase58(Span<const unsigned char> input)
 
 bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet, int max_ret_len)
 {
-    if (!ValidAsCString(str)) {
+    if (!ContainsNoNUL(str)) {
         return false;
     }
     return DecodeBase58(str.c_str(), vchRet, max_ret_len);
@@ -160,7 +160,7 @@ std::string EncodeBase58Check(Span<const unsigned char> input)
 
 bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet, int max_ret)
 {
-    if (!ValidAsCString(str)) {
+    if (!ContainsNoNUL(str)) {
         return false;
     }
     return DecodeBase58Check(str.c_str(), vchRet, max_ret);

src/netaddress.cpp

@@ -210,7 +210,7 @@ static void Checksum(Span<const uint8_t> addr_pubkey, uint8_t (&checksum)[CHECKS
 
 bool CNetAddr::SetSpecial(const std::string& addr)
 {
-    if (!ValidAsCString(addr)) {
+    if (!ContainsNoNUL(addr)) {
         return false;
     }
 

src/netbase.cpp

@@ -136,7 +136,7 @@ static bool LookupIntern(const std::string& name, std::vector<CNetAddr>& vIP, un
 {
     vIP.clear();
 
-    if (!ValidAsCString(name)) {
+    if (!ContainsNoNUL(name)) {
         return false;
     }
 
@@ -169,7 +169,7 @@ static bool LookupIntern(const std::string& name, std::vector<CNetAddr>& vIP, un
 
 bool LookupHost(const std::string& name, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup, DNSLookupFn dns_lookup_function)
 {
-    if (!ValidAsCString(name)) {
+    if (!ContainsNoNUL(name)) {
         return false;
     }
     std::string strHost = name;
@@ -184,7 +184,7 @@ bool LookupHost(const std::string& name, std::vector<CNetAddr>& vIP, unsigned in
 
 bool LookupHost(const std::string& name, CNetAddr& addr, bool fAllowLookup, DNSLookupFn dns_lookup_function)
 {
-    if (!ValidAsCString(name)) {
+    if (!ContainsNoNUL(name)) {
         return false;
     }
     std::vector<CNetAddr> vIP;
@@ -197,7 +197,7 @@ bool LookupHost(const std::string& name, CNetAddr& addr, bool fAllowLookup, DNSL
 
 bool Lookup(const std::string& name, std::vector<CService>& vAddr, uint16_t portDefault, bool fAllowLookup, unsigned int nMaxSolutions, DNSLookupFn dns_lookup_function)
 {
-    if (name.empty() || !ValidAsCString(name)) {
+    if (name.empty() || !ContainsNoNUL(name)) {
         return false;
     }
     uint16_t port{portDefault};
@@ -216,7 +216,7 @@ bool Lookup(const std::string& name, std::vector<CService>& vAddr, uint16_t port
 
 bool Lookup(const std::string& name, CService& addr, uint16_t portDefault, bool fAllowLookup, DNSLookupFn dns_lookup_function)
 {
-    if (!ValidAsCString(name)) {
+    if (!ContainsNoNUL(name)) {
         return false;
     }
     std::vector<CService> vService;
@@ -229,7 +229,7 @@ bool Lookup(const std::string& name, CService& addr, uint16_t portDefault, bool
 
 CService LookupNumeric(const std::string& name, uint16_t portDefault, DNSLookupFn dns_lookup_function)
 {
-    if (!ValidAsCString(name)) {
+    if (!ContainsNoNUL(name)) {
         return {};
     }
     CService addr;
@@ -684,7 +684,7 @@ bool ConnectThroughProxy(const Proxy& proxy, const std::string& strDest, uint16_
 
 bool LookupSubNet(const std::string& subnet_str, CSubNet& subnet_out)
 {
-    if (!ValidAsCString(subnet_str)) {
+    if (!ContainsNoNUL(subnet_str)) {
         return false;
     }
 

src/test/fuzz/string.cpp

@@ -42,7 +42,7 @@ bool LegacyParsePrechecks(const std::string& str)
         return false;
     if (str.size() >= 1 && (IsSpace(str[0]) || IsSpace(str[str.size() - 1]))) // No padding allowed
         return false;
-    if (!ValidAsCString(str)) // No embedded NUL characters allowed
+    if (!ContainsNoNUL(str)) // No embedded NUL characters allowed
         return false;
     return true;
 }
@@ -188,7 +188,7 @@ FUZZ_TARGET(string)
     (void)TrimString(random_string_1);
     (void)TrimString(random_string_1, random_string_2);
     (void)urlDecode(random_string_1);
-    (void)ValidAsCString(random_string_1);
+    (void)ContainsNoNUL(random_string_1);
     (void)_(random_string_1.c_str());
     try {
         throw scriptnum_error{random_string_1};

src/util/moneystr.cpp

@@ -40,7 +40,7 @@ std::string FormatMoney(const CAmount n)
 
 std::optional<CAmount> ParseMoney(const std::string& money_string)
 {
-    if (!ValidAsCString(money_string)) {
+    if (!ContainsNoNUL(money_string)) {
         return std::nullopt;
     }
     const std::string str = TrimString(money_string);

src/util/string.h

@@ -91,7 +91,7 @@ inline std::string MakeUnorderedList(const std::vector<std::string>& items)
 /**
  * Check if a string does not contain any embedded NUL (\0) characters
  */
-[[nodiscard]] inline bool ValidAsCString(std::string_view str) noexcept
+[[nodiscard]] inline bool ContainsNoNUL(std::string_view str) noexcept
 {
     for (auto c : str) {
         if (c == 0) return false;