Add -reindex, to perform in-place reindexing of block chain files

Flushes the blktree/ and coins/ databases, and reindexes the
block chain files, as if their contents was loaded via -loadblock.

Based on earlier work by Jeff Garzik.

3 files changed, 30 insertions, 7 deletions

diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 988f4185b9..9c47daf85d 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -489,7 +489,8 @@ void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
     statusBar()->clearMessage();
 
     // don't show / hide progress bar and its label if we have no connection to the network
-    if (!clientModel || (clientModel->getNumConnections() == 0 && !clientModel->isImporting()))
+    enum BlockSource blockSource = clientModel ? clientModel->getBlockSource() : BLOCK_SOURCE_NONE;
+    if (blockSource == BLOCK_SOURCE_NONE || (blockSource == BLOCK_SOURCE_NETWORK && clientModel->getNumConnections() == 0))
     {
         progressBarLabel->setVisible(false);
         progressBar->setVisible(false);
@@ -499,26 +500,37 @@ void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
 
     QString tooltip;
 
+    QString importText;
+    switch (blockSource) {
+    case BLOCK_SOURCE_NONE:
+    case BLOCK_SOURCE_NETWORK:
+        importText = tr("Synchronizing with network...");
+    case BLOCK_SOURCE_DISK:
+        importText = tr("Importing blocks from disk...");
+    case BLOCK_SOURCE_REINDEX:
+        importText = tr("Reindexing blocks on disk...");
+    }
+
     if(count < nTotalBlocks)
     {
         int nRemainingBlocks = nTotalBlocks - count;
         float nPercentageDone = count / (nTotalBlocks * 0.01f);
 
-        progressBarLabel->setText(tr(clientModel->isImporting() ? "Importing blocks..." : "Synchronizing with network..."));
+        progressBarLabel->setText(importText);
         progressBarLabel->setVisible(true);
         progressBar->setFormat(tr("~%n block(s) remaining", "", nRemainingBlocks));
         progressBar->setMaximum(nTotalBlocks);
         progressBar->setValue(count);
         progressBar->setVisible(true);
 
-        tooltip = tr("Downloaded %1 of %2 blocks of transaction history (%3% done).").arg(count).arg(nTotalBlocks).arg(nPercentageDone, 0, 'f', 2);
+        tooltip = tr("Processed %1 of %2 blocks of transaction history (%3% done).").arg(count).arg(nTotalBlocks).arg(nPercentageDone, 0, 'f', 2);
     }
     else
     {
         progressBarLabel->setVisible(false);
 
         progressBar->setVisible(false);
-        tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
+        tooltip = tr("Processed %1 blocks of transaction history.").arg(count);
     }
 
     QDateTime lastBlockDate = clientModel->getLastBlockDate();
diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index 25db695a0b..9b7362d757 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -101,9 +101,13 @@ bool ClientModel::inInitialBlockDownload() const
     return IsInitialBlockDownload();
 }
 
-bool ClientModel::isImporting() const
+enum BlockSource ClientModel::getBlockSource() const
 {
-    return fImporting;
+    if (fReindex)
+        return BLOCK_SOURCE_REINDEX;
+    if (fImporting)
+        return BLOCK_SOURCE_DISK;
+    return BLOCK_SOURCE_NETWORK;
 }
 
 int ClientModel::getNumBlocksOfPeers() const
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index fd0135b3e6..7d6401ab25 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -13,6 +13,13 @@ class QDateTime;
 class QTimer;
 QT_END_NAMESPACE
 
+enum BlockSource {
+    BLOCK_SOURCE_NONE,
+    BLOCK_SOURCE_NETWORK,
+    BLOCK_SOURCE_DISK,
+    BLOCK_SOURCE_REINDEX
+};
+
 /** Model for Bitcoin network client. */
 class ClientModel : public QObject
 {
@@ -34,7 +41,7 @@ public:
     //! Return true if core is doing initial block download
     bool inInitialBlockDownload() const;
     //! Return true if core is importing blocks
-    bool isImporting() const;
+    enum BlockSource getBlockSource() const;
     //! Return conservative estimate of total number of blocks, or 0 if unknown
     int getNumBlocksOfPeers() const;
     //! Return warnings to be displayed in status bar