Merge #12891: [logging] add lint-logs.sh to check for newline termination.

d207207 [logging] add lint-logs.sh to check for newline termination. (John Newbery)
5c21e6c [logging] Comment all continuing logs. (John Newbery)

Pull request description:

  Check that all calls to LogPrintf() are terminated by a newline,
  except those that are explicitly marked as 'continued' logs.

Tree-SHA512: fe5162b2b2df1e8a4c807da87584fa9af97a6b8377e4090fe0caa136d90bf29a487a123cde94569bdce7101fee3478196d99aa13f1212e24bfe5f41c773604fc

7 files changed, 38 insertions, 13 deletions

diff --git a/contrib/devtools/lint-logs.sh b/contrib/devtools/lint-logs.sh
new file mode 100755
index 0000000000..3bb54359a8
--- /dev/null
+++ b/contrib/devtools/lint-logs.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+#
+# Copyright (c) 2018 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# Check that all logs are terminated with '\n'
+#
+# Some logs are continued over multiple lines. They should be explicitly
+# commented with \* Continued *\
+#
+# There are some instances of LogPrintf() in comments. Those can be
+# ignored
+
+
+UNTERMINATED_LOGS=$(git grep "LogPrintf(" -- "*.cpp" | \
+    grep -v '\\n"' | \
+    grep -v "/\* Continued \*/" | \
+    grep -v "LogPrintf()")
+if [[ ${UNTERMINATED_LOGS} != "" ]]; then
+    echo "All calls to LogPrintf() should be terminated with \\n"
+    echo
+    echo "${UNTERMINATED_LOGS}"
+    exit 1
+fi
diff --git a/src/dbwrapper.cpp b/src/dbwrapper.cpp
index ca446c92fe..e401b5fb1b 100644
--- a/src/dbwrapper.cpp
+++ b/src/dbwrapper.cpp
@@ -63,7 +63,7 @@ public:
 
                 assert(p <= limit);
                 base[std::min(bufsize - 1, (int)(p - base))] = '\0';
-                LogPrintf("leveldb: %s", base);
+                LogPrintf("leveldb: %s", base);  /* Continued */
                 if (base != buffer) {
                     delete[] base;
                 }
diff --git a/src/init.cpp b/src/init.cpp
index 811e59e362..9684b0c702 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1233,7 +1233,7 @@ bool AppInitMain()
 
     // Warn about relative -datadir path.
     if (gArgs.IsArgSet("-datadir") && !fs::path(gArgs.GetArg("-datadir", "")).is_absolute()) {
-        LogPrintf("Warning: relative datadir option '%s' specified, which will be interpreted relative to the "
+        LogPrintf("Warning: relative datadir option '%s' specified, which will be interpreted relative to the " /* Continued */
                   "current working directory '%s'. This is fragile, because if bitcoin is started in the future "
                   "from a different location, it will be unable to locate the current data files. There could "
                   "also be data loss if bitcoin is started while in a temporary directory.\n",
diff --git a/src/sync.cpp b/src/sync.cpp
index fdf7c44e4c..6f21d498ee 100644
--- a/src/sync.cpp
+++ b/src/sync.cpp
@@ -81,20 +81,20 @@ static void potential_deadlock_detected(const std::pair<void*, void*>& mismatch,
     LogPrintf("Previous lock order was:\n");
     for (const std::pair<void*, CLockLocation> & i : s2) {
         if (i.first == mismatch.first) {
-            LogPrintf(" (1)");
+            LogPrintf(" (1)"); /* Continued */
         }
         if (i.first == mismatch.second) {
-            LogPrintf(" (2)");
+            LogPrintf(" (2)"); /* Continued */
         }
         LogPrintf(" %s\n", i.second.ToString());
     }
     LogPrintf("Current lock order is:\n");
     for (const std::pair<void*, CLockLocation> & i : s1) {
         if (i.first == mismatch.first) {
-            LogPrintf(" (1)");
+            LogPrintf(" (1)"); /* Continued */
         }
         if (i.first == mismatch.second) {
-            LogPrintf(" (2)");
+            LogPrintf(" (2)"); /* Continued */
         }
         LogPrintf(" %s\n", i.second.ToString());
     }
diff --git a/src/txdb.cpp b/src/txdb.cpp
index 8550a7e889..45ce94ae42 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -370,7 +370,7 @@ bool CCoinsViewDB::Upgrade() {
 
     int64_t count = 0;
     LogPrintf("Upgrading utxo-set database...\n");
-    LogPrintf("[0%%]...");
+    LogPrintf("[0%%]..."); /* Continued */
     uiInterface.ShowProgress(_("Upgrading UTXO database"), 0, true);
     size_t batch_size = 1 << 24;
     CDBBatch batch(db);
@@ -389,7 +389,7 @@ bool CCoinsViewDB::Upgrade() {
                 uiInterface.ShowProgress(_("Upgrading UTXO database"), percentageDone, true);
                 if (reportDone < percentageDone/10) {
                     // report max. every 10% step
-                    LogPrintf("[%d%%]...", percentageDone);
+                    LogPrintf("[%d%%]...", percentageDone); /* Continued */
                     reportDone = percentageDone/10;
                 }
             }
diff --git a/src/validation.cpp b/src/validation.cpp
index e881b45bd2..b68319e235 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -2230,13 +2230,13 @@ void static UpdateTip(const CBlockIndex *pindexNew, const CChainParams& chainPar
             DoWarning(strWarning);
         }
     }
-    LogPrintf("%s: new best=%s height=%d version=0x%08x log2_work=%.8g tx=%lu date='%s' progress=%f cache=%.1fMiB(%utxo)", __func__,
+    LogPrintf("%s: new best=%s height=%d version=0x%08x log2_work=%.8g tx=%lu date='%s' progress=%f cache=%.1fMiB(%utxo)", __func__, /* Continued */
       pindexNew->GetBlockHash().ToString(), pindexNew->nHeight, pindexNew->nVersion,
       log(pindexNew->nChainWork.getdouble())/log(2.0), (unsigned long)pindexNew->nChainTx,
       FormatISO8601DateTime(pindexNew->GetBlockTime()),
       GuessVerificationProgress(chainParams.TxData(), pindexNew), pcoinsTip->DynamicMemoryUsage() * (1.0 / (1<<20)), pcoinsTip->GetCacheSize());
     if (!warningMessages.empty())
-        LogPrintf(" warning='%s'", boost::algorithm::join(warningMessages, ", "));
+        LogPrintf(" warning='%s'", boost::algorithm::join(warningMessages, ", ")); /* Continued */
     LogPrintf("\n");
 
 }
@@ -3902,14 +3902,14 @@ bool CVerifyDB::VerifyDB(const CChainParams& chainparams, CCoinsView *coinsview,
     int nGoodTransactions = 0;
     CValidationState state;
     int reportDone = 0;
-    LogPrintf("[0%%]...");
+    LogPrintf("[0%%]..."); /* Continued */
     for (CBlockIndex* pindex = chainActive.Tip(); pindex && pindex->pprev; pindex = pindex->pprev)
     {
         boost::this_thread::interruption_point();
         int percentageDone = std::max(1, std::min(99, (int)(((double)(chainActive.Height() - pindex->nHeight)) / (double)nCheckDepth * (nCheckLevel >= 4 ? 50 : 100))));
         if (reportDone < percentageDone/10) {
             // report every 10% step
-            LogPrintf("[%d%%]...", percentageDone);
+            LogPrintf("[%d%%]...", percentageDone); /* Continued */
             reportDone = percentageDone/10;
         }
         uiInterface.ShowProgress(_("Verifying blocks..."), percentageDone, false);
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 8dac547abb..894dfb035c 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -3075,7 +3075,7 @@ bool CWallet::CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::ve
         wtxNew.fTimeReceivedIsTxTime = true;
         wtxNew.fFromMe = true;
 
-        LogPrintf("CommitTransaction:\n%s", wtxNew.tx->ToString());
+        LogPrintf("CommitTransaction:\n%s", wtxNew.tx->ToString()); /* Continued */
         {
             // Take key pair from key pool so it won't be used again
             reservekey.KeepKey();