Merge #14599: Use functions guaranteed to be locale independent (IsDigit, ToLower) in {Format,Parse}Money(...), uint256::SetHex(...), etc. Remove the use of locale dependent boost::is_space(...)

8931a95beca2b959c7ee73b154ce8a69acbe8599 Include util/strencodings.h which is required for IsSpace(...) (practicalswift)
7c9f7907615ff9c10a56ede5a8e47c91cb20fe3b Update KNOWN_VIOLATIONS: Remove fixed violations (practicalswift)
587924f0006d2eb9b8218b6abffe181bb9c27513 Use IsSpace(...) instead of boost::is_space (practicalswift)
c5fd143edb85d0c181e21a429f9e29d12a611831 Use ToLower(...) instead of std::tolower (practicalswift)
e70cc8983c570bbacee37a67df86b1bf959894df Use IsDigit(...) instead of std::isdigit (practicalswift)

Pull request description:

  * Use `ToLower(...)` instead of `std::tolower`. `std::tolower` is locale dependent.
  * Use `IsDigit(...)` instead of `std::isdigit`. Some implementations (e.g. Microsoft in 1252 codepage) may classify single-byte characters other than `[0-9]` as digits.
  * Update `KNOWN_VIOLATIONS`: Remove fixed violations.
  * ~~Replace use of locale dependent Boost trim (`boost::trim`) with locale independent `TrimString`.~~
  * Use` IsSpace(...)` instead of `boost::is_space`

Tree-SHA512: defed016136b530b723fa185afdbd00410925a748856ba3afa4cee60f61a67617e30f304f2b9991a67b5fe075d9624f051e14342aee176f45fbc024d59e1aa82

5 files changed, 9 insertions, 7 deletions

diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
index a6187685a9..d062ea49bd 100644
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -18,6 +18,7 @@
 #include <netbase.h>
 #include <rpc/server.h>
 #include <rpc/client.h>
+#include <util/strencodings.h>
 #include <util/system.h>
 
 #include <openssl/crypto.h>
@@ -226,7 +227,7 @@ bool RPCConsole::RPCParseCommandLine(interfaces::Node* node, std::string &strRes
                                 if (lastResult.isArray())
                                 {
                                     for(char argch: curarg)
-                                        if (!std::isdigit(argch))
+                                        if (!IsDigit(argch))
                                             throw std::runtime_error("Invalid result query");
                                     subelement = lastResult[atoi(curarg.c_str())];
                                 }
diff --git a/src/test/getarg_tests.cpp b/src/test/getarg_tests.cpp
index 14ddf4d10e..8048238028 100644
--- a/src/test/getarg_tests.cpp
+++ b/src/test/getarg_tests.cpp
@@ -2,6 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <util/strencodings.h>
 #include <util/system.h>
 #include <test/test_bitcoin.h>
 
@@ -17,7 +18,7 @@ static void ResetArgs(const std::string& strArg)
 {
     std::vector<std::string> vecArg;
     if (strArg.size())
-      boost::split(vecArg, strArg, boost::is_space(), boost::token_compress_on);
+      boost::split(vecArg, strArg, IsSpace, boost::token_compress_on);
 
     // Insert dummy executable name:
     vecArg.insert(vecArg.begin(), "testbitcoin");
diff --git a/src/uint256.cpp b/src/uint256.cpp
index d9da668036..b723f9ee54 100644
--- a/src/uint256.cpp
+++ b/src/uint256.cpp
@@ -33,7 +33,7 @@ void base_blob<BITS>::SetHex(const char* psz)
         psz++;
 
     // skip 0x
-    if (psz[0] == '0' && tolower(psz[1]) == 'x')
+    if (psz[0] == '0' && ToLower((unsigned char)psz[1]) == 'x')
         psz += 2;
 
     // hex string to uint
diff --git a/src/util/moneystr.cpp b/src/util/moneystr.cpp
index 4c4de7b729..f4e41eea4f 100644
--- a/src/util/moneystr.cpp
+++ b/src/util/moneystr.cpp
@@ -20,7 +20,7 @@ std::string FormatMoney(const CAmount& n)
 
     // Right-trim excess zeros before the decimal point:
     int nTrim = 0;
-    for (int i = str.size()-1; (str[i] == '0' && isdigit(str[i-2])); --i)
+    for (int i = str.size()-1; (str[i] == '0' && IsDigit(str[i-2])); --i)
         ++nTrim;
     if (nTrim)
         str.erase(str.size()-nTrim, nTrim);
@@ -49,7 +49,7 @@ bool ParseMoney(const char* pszIn, CAmount& nRet)
         {
             p++;
             int64_t nMult = COIN / 10;
-            while (isdigit(*p) && (nMult > 0))
+            while (IsDigit(*p) && (nMult > 0))
             {
                 nUnits += nMult * (*p++ - '0');
                 nMult /= 10;
@@ -58,7 +58,7 @@ bool ParseMoney(const char* pszIn, CAmount& nRet)
         }
         if (IsSpace(*p))
             break;
-        if (!isdigit(*p))
+        if (!IsDigit(*p))
             return false;
         strWhole.insert(strWhole.end(), *p);
     }
diff --git a/src/util/system.cpp b/src/util/system.cpp
index ffe4d21ee3..a4bf126900 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -443,7 +443,7 @@ bool ArgsManager::ParseParameters(int argc, const char* const argv[], std::strin
             key.erase(is_index);
         }
 #ifdef WIN32
-        std::transform(key.begin(), key.end(), key.begin(), ::tolower);
+        std::transform(key.begin(), key.end(), key.begin(), ToLower);
         if (key[0] == '/')
             key[0] = '-';
 #endif