FileHash

SerialPrograms/Source/CommonFramework/Tools/FileHash.cpp

@@ -0,0 +1,50 @@
+/*  File Hash
+ *
+ *  From: https://github.com/PokemonAutomation/
+ *
+ */
+
+#include "Common/Cpp/Exceptions.h"
+#include <QFile>
+#include <QCryptographicHash>
+#include <QDebug>
+#include "FileHash.h"
+
+
+#include <iostream>
+using std::cout;
+using std::endl;
+
+namespace PokemonAutomation{
+
+
+
+std::string hash_file(CancellableScope& scope, const std::string& file_path, std::function<void(uint64_t bytes_done, uint64_t total_bytes)> hash_progress) {
+    QFile file(QString::fromStdString(file_path));
+    if (!file.open(QIODevice::ReadOnly)) {
+        throw InternalProgramError(nullptr, PA_CURRENT_FUNCTION, "hash_file: Could not open file.");
+    }
+
+    QCryptographicHash hash(QCryptographicHash::Sha256);
+    qint64 file_size = file.size();
+    qint64 total_bytes_read = 0;
+
+    QByteArray buffer(1024 * 1024, 0); // Pre-allocate 1MB once
+    while (!file.atEnd()) {
+        scope.throw_if_cancelled();
+
+        qint64 num_bytes_in_chunk = file.read(buffer.data(), buffer.size());
+        if (num_bytes_in_chunk == -1) {
+            throw InternalProgramError(nullptr, PA_CURRENT_FUNCTION, "hash_file: Read error:" + file.errorString().toStdString());
+        }
+
+        hash.addData(QByteArrayView(buffer.data(), num_bytes_in_chunk));
+        total_bytes_read += num_bytes_in_chunk;
+
+        hash_progress(total_bytes_read, file_size);
+    }
+
+    return hash.result().toHex().toStdString(); 
+}
+
+}

SerialPrograms/Source/CommonFramework/Tools/FileHash.h

@@ -0,0 +1,21 @@
+/*  File Hash
+ *
+ *  From: https://github.com/PokemonAutomation/
+ *
+ */
+
+#ifndef PokemonAutomation_FileHash_H
+#define PokemonAutomation_FileHash_H
+
+#include <string>
+#include <functional>
+#include "Common/Cpp/CancellableScope.h"
+
+
+namespace PokemonAutomation{
+
+// uses SHA 256
+std::string hash_file(CancellableScope& scope, const std::string& file_path, std::function<void(uint64_t bytes_done, uint64_t total_bytes)> hash_progress);
+
+}
+#endif

SerialPrograms/cmake/SourceFiles.cmake

@@ -497,6 +497,8 @@ file(GLOB LIBRARY_SOURCES
     Source/CommonFramework/Tools/ErrorDumper.h
     Source/CommonFramework/Tools/FileDownloader.cpp
     Source/CommonFramework/Tools/FileDownloader.h
+    Source/CommonFramework/Tools/FileHash.cpp
+    Source/CommonFramework/Tools/FileHash.h
     Source/CommonFramework/Tools/FileUnzip.cpp
     Source/CommonFramework/Tools/FileUnzip.h
     Source/CommonFramework/Tools/GlobalThreadPools.cpp