From 59508931bc42064c23d5fbcb062d6f7396a873ab Mon Sep 17 00:00:00 2001
From: Syndamia <kamen.d.mladenov@protonmail.com>
Date: Wed, 30 Mar 2022 20:20:32 +0300
Subject: Solved dimitriev hw (sem 3, ex4)

---
 .../Solutions Sem. 03/ex4/File.cpp                 | 102 +++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 Year 1/Object-oriented Programming/Solutions Sem. 03/ex4/File.cpp

(limited to 'Year 1/Object-oriented Programming/Solutions Sem. 03/ex4/File.cpp')

diff --git a/Year 1/Object-oriented Programming/Solutions Sem. 03/ex4/File.cpp b/Year 1/Object-oriented Programming/Solutions Sem. 03/ex4/File.cpp
new file mode 100644
index 0000000..f553bbe
--- /dev/null
+++ b/Year 1/Object-oriented Programming/Solutions Sem. 03/ex4/File.cpp	
@@ -0,0 +1,102 @@
+#include "File.h"
+
+/* Helper functions */
+
+size_t fileSize(std::ifstream& file) {
+	int currIndex = file.tellg();
+	file.seekg(0, std::ios::end);
+
+	size_t size = file.tellg();
+	file.seekg(currIndex, std::ios::beg);
+
+	return size;
+}
+
+/* Private File functions */
+
+void File::resizeBuffer() {
+	size_t newLen = (length == 0) ? 8 : length << 1;
+
+	Bytex* temp = new Bytex[newLen];
+	for (int i = 0; i < length; i++)
+		temp[i] = fileBuffer[i];
+
+	if (length != 0) delete[] fileBuffer;
+	fileBuffer = temp;
+	length = newLen;
+}
+
+char File::bytexToReadableChar(Bytex bytex) const {
+	char b = bytex.getByte();
+	if ((b >= 'A' && b <= 'Z') || (b >= 'a' && b <= 'z'))
+		return bytex.getByte();
+	return '.';
+}
+
+/* Public File functions */
+
+File::File(const char* filePath) {
+	std::ifstream inFile(filePath);
+	if (!inFile.is_open()) {
+		std::cout << "Error opening file" << std::endl;
+		return;
+	}
+
+	size_t size = fileSize(inFile);
+	length = count = 0;
+
+	for (int i = 0; i < size; i++)
+		add(inFile.get());
+
+	inFile.close();
+
+	size_t pathLen = strlen(filePath) + 1;
+	originalFilePath = new char[pathLen];
+	for (int i = 0; i < pathLen; i++)
+		originalFilePath[i] = filePath[i];
+}
+
+File::~File() {
+	delete[] fileBuffer;
+	delete[] originalFilePath;
+}
+
+void File::viewFile() const {
+	char buffer[2];
+	
+	for (size_t i = 0; i < count; i++) {
+		fileBuffer[i].getHex(buffer);
+		std::cout << buffer << " ";
+	}
+	std::cout << std::endl;
+
+	for (size_t i = 0; i < count; i++)
+		std::cout << bytexToReadableChar(fileBuffer[i]) << "  ";
+	std::cout << std::endl;
+}
+
+void File::change(int index, Bytex bytex) {
+	fileBuffer[index] = bytex;
+}
+
+void File::add(Bytex bytex) {
+	if (count == length)
+		resizeBuffer();
+
+	fileBuffer[count++] = bytex;
+}
+
+void File::remove() {
+	fileBuffer[count--] = '\0';
+}
+
+void File::save() const {
+	saveAs(originalFilePath);
+}
+
+void File::saveAs(const char* filePath) const {
+	std::ofstream outFile(filePath);
+	for (int i = 0; i < count; i++)
+		outFile.put(fileBuffer[i].getByte());
+	outFile.close();
+}
-- 
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