Further midi file support.

src/core/file_utilities/BinaryFile.cpp

@@ -0,0 +1,88 @@
+#include "BinaryFile.h"
+#include "ByteUtils.h"
+
+bool BinaryFile::GetNextByteAsInt(std::ifstream& file, int& target)
+{
+    char c;
+    file.get(c);
+    target = int(c);
+    return true;
+}
+
+bool BinaryFile::GetNextNBytes(std::ifstream& file, char* buffer, unsigned number)
+{
+    char c;
+    for(unsigned idx=0; idx<number; idx++)
+    {
+        if(file.get(c))
+        {
+            buffer[idx] = c;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool BinaryFile::GetNextWord(std::ifstream& file, char* buffer)
+{
+    return GetNextNBytes(file, buffer, ByteUtils::BYTES_PER_WORD);
+}
+
+bool BinaryFile::GetNextDWord(std::ifstream& file, char* buffer)
+{
+    return GetNextNBytes(file, buffer, ByteUtils::BYTES_PER_DWORD);
+}
+
+bool BinaryFile::GetNextWord(std::ifstream& file, int& target, bool reverse)
+{
+    char buffer[ByteUtils::BYTES_PER_WORD];
+    if(!BinaryFile::GetNextWord(file, buffer))
+    {
+        return false;
+    }
+    target = ByteUtils::ToWord(buffer, reverse);
+    return true;
+}
+
+bool BinaryFile::GetNextDWord(std::ifstream& file, int& target)
+{
+    char buffer[ByteUtils::BYTES_PER_DWORD];
+    if(!BinaryFile::GetNextDWord(file, buffer))
+    {
+        return false;
+    }
+    target = ByteUtils::ToDWord(buffer);
+    return true;
+}
+
+bool BinaryFile::CheckNextDWord(std::ifstream& file, const char* target)
+{
+    char buffer[ByteUtils::BYTES_PER_DWORD];
+    if(!BinaryFile::GetNextDWord(file, buffer))
+    {
+        return false;
+    }
+
+    if(!ByteUtils::CompareDWords(buffer, target))
+    {
+        return false;
+    }
+    return true;
+}
+
+bool BinaryFile::GetNextString(std::ifstream& file, std::string& target, unsigned numBytes)
+{
+    char c;
+    for(unsigned idx=0; idx<numBytes; idx++)
+    {
+        if(!file.get(c))
+        {
+            return false;
+        }
+        target += c;
+    }
+    return true;
+}

src/core/file_utilities/BinaryFile.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <fstream>
+#include <string>
+
+class BinaryFile
+{
+public:
+
+    static bool GetNextByteAsInt(std::ifstream& file, int& target);
+
+    static bool GetNextNBytes(std::ifstream& file, char* buffer, unsigned numBytes);
+
+    static bool GetNextWord(std::ifstream& file, char* buffer);
+
+    static bool GetNextDWord(std::ifstream& file, char* buffer);
+
+    static bool GetNextWord(std::ifstream& file, int& target, bool reverse = true);
+
+    static bool GetNextDWord(std::ifstream& file, int& target);
+
+    static bool CheckNextDWord(std::ifstream& file, const char* target);
+
+    static bool GetNextString(std::ifstream& file, std::string& target, unsigned numBytes);
+};