consolidate all repos to one for archive

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/.gitattributes

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+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+* text=auto
+
+###############################################################################
+# Set default behavior for command prompt diff.
+#
+# This is need for earlier builds of msysgit that does not have it on by
+# default for csharp files.
+# Note: This is only used by command line
+###############################################################################
+#*.cs     diff=csharp
+
+###############################################################################
+# Set the merge driver for project and solution files
+#
+# Merging from the command prompt will add diff markers to the files if there
+# are conflicts (Merging from VS is not affected by the settings below, in VS
+# the diff markers are never inserted). Diff markers may cause the following 
+# file extensions to fail to load in VS. An alternative would be to treat
+# these files as binary and thus will always conflict and require user
+# intervention with every merge. To do so, just uncomment the entries below
+###############################################################################
+#*.sln       merge=binary
+#*.csproj    merge=binary
+#*.vbproj    merge=binary
+#*.vcxproj   merge=binary
+#*.vcproj    merge=binary
+#*.dbproj    merge=binary
+#*.fsproj    merge=binary
+#*.lsproj    merge=binary
+#*.wixproj   merge=binary
+#*.modelproj merge=binary
+#*.sqlproj   merge=binary
+#*.wwaproj   merge=binary
+
+###############################################################################
+# behavior for image files
+#
+# image files are treated as binary by default.
+###############################################################################
+#*.jpg   binary
+#*.png   binary
+#*.gif   binary
+
+###############################################################################
+# diff behavior for common document formats
+# 
+# Convert binary document formats to text before diffing them. This feature
+# is only available from the command line. Turn it on by uncommenting the 
+# entries below.
+###############################################################################
+#*.doc   diff=astextplain
+#*.DOC   diff=astextplain
+#*.docx  diff=astextplain
+#*.DOCX  diff=astextplain
+#*.dot   diff=astextplain
+#*.DOT   diff=astextplain
+#*.pdf   diff=astextplain
+#*.PDF   diff=astextplain
+#*.rtf   diff=astextplain
+#*.RTF   diff=astextplain

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Oo]ut/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
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+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
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+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.33530.505
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Naloga_4", "Naloga_4\Naloga_4.vcxproj", "{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Debug|x64.ActiveCfg = Debug|x64
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Debug|x64.Build.0 = Debug|x64
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Debug|x86.ActiveCfg = Debug|Win32
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Debug|x86.Build.0 = Debug|Win32
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Release|x64.ActiveCfg = Release|x64
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Release|x64.Build.0 = Release|x64
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Release|x86.ActiveCfg = Release|Win32
+		{4AB4235A-2D75-4AC6-A8FF-7AC23D131947}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F1CD70E5-9812-44EE-A3B6-02C74F200F7C}
+	EndGlobalSection
+EndGlobal

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/BinReader.h

@@ -0,0 +1,29 @@
+#pragma once
+#include <iostream>
+#include <fstream>
+
+class BinReader {
+public:
+	int k;
+	std::ifstream f;
+	char x = 0;
+
+	BinReader(const char* p) : k(0) {
+		f.open(p, std::ios::binary);
+	}
+
+	char readByte() {
+		f.read((char*)&x, 1);
+		return x;
+	}
+
+	bool readBit() {
+		if (k == 8) {
+			readByte();
+			k = 0;
+		}
+		bool b = (x >> k) & 1;
+		k++;
+		return b;
+	}
+};

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/BitReader.h

@@ -0,0 +1,39 @@
+#pragma once
+#include <iostream>
+#include <fstream>
+
+class BitReader {
+public:
+	int k = 0;
+	std::ifstream f;
+	char x = 0;
+
+	BitReader(const char* p) : k(8) {
+		f.open(p, std::ios::binary);
+	}
+
+	~BitReader() {
+		f.close();
+	}
+
+	int readInt() {
+		int ret;
+		f.read((char*)&ret, 4);
+		return ret;
+	}
+
+	char readByte() {
+		f.read((char*)&x, 1);
+		return x;
+	}
+
+	bool readBit() {
+		if (k == 8) {
+			readByte();
+			k = 0;
+		}
+		bool b = (x >> k) & 1;
+		k++;
+		return b;
+	}
+};

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/BitWriter.h

@@ -0,0 +1,39 @@
+#pragma once
+#include <iostream>
+#include <fstream>
+
+class BitWriter {
+public:
+	int k;
+	std::ofstream f;
+	char x = 0;
+
+	BitWriter(const char* p) : k(0) {
+		f.open(p, std::ios::binary);
+	}
+
+	~BitWriter() {
+		if (k > 0) writeByte(x);
+		f.close();
+	}
+
+	void writeByte(uint8_t x) {
+		//f.write((char*)&x, 1);
+		f << x;
+	}
+
+	void writeInt(int y) {
+		f.write((char*)&y, 4);
+	}
+
+	void writeBit(bool b) {
+		if (k == 8) {
+			writeByte(x);
+			k = 0;
+			x = 0;
+		}
+		x ^= (-b ^ x) & (1 << k);
+		k++;
+	}
+};
+

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/Naloga_4.cpp

@@ -0,0 +1,56 @@
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <algorithm>
+#include <string>
+#include <map>
+
+#include "ShannonFano.h"
+
+class codeNode {
+public:
+	codeNode() {
+
+	}
+	std::shared_ptr<codeNode> left;
+	std::shared_ptr<codeNode> right;
+
+	std::shared_ptr<codeNode> getNextNode(bool bit) {
+		if (bit) return left;
+		else return right;
+	}
+
+	uint8_t c = 0;
+};
+
+int main(int argc, char** argv)
+{
+	if (argc != 3) {
+		std::cout << argv[0] << " <c ali d> <binarna datoteka>\n";
+		return -1;
+	}
+	//$(SolutionDir)alice.txt
+	ShannonFano sf;
+	std::string ex = "";
+
+	if (argv[1][0] == 'c') {
+	    sf.commpress(argv[2]);
+		ex = "out.bin";
+	}
+	else {
+	    sf.decommpress(argv[2]);
+		ex = "out_d.bin";
+	}
+
+	std::ifstream in_file(argv[2], std::ios::binary);
+	in_file.seekg(0, std::ios::end);
+	int file_size = in_file.tellg();
+
+	std::ifstream ex_file(ex, std::ios::binary);
+	ex_file.seekg(0, std::ios::end);
+	int file_size2 = ex_file.tellg();
+
+
+	std::cout << "compressed: " << std::to_string((float)file_size2 / (float)file_size) << "\n";
+
+}

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/Naloga_4.vcxproj

@@ -0,0 +1,142 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{4ab4235a-2d75-4ac6-a8ff-7ac23d131947}</ProjectGuid>
+    <RootNamespace>Naloga4</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="Naloga_4.cpp" />
+    <ClCompile Include="ShannonFano.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="BitReader.h" />
+    <ClInclude Include="BitWriter.h" />
+    <ClInclude Include="ShannonFano.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/Naloga_4.vcxproj.filters

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="Naloga_4.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="ShannonFano.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="BitWriter.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="BitReader.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="ShannonFano.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/ShannonFano.cpp

@@ -0,0 +1,146 @@
+#include "ShannonFano.h"
+#include <fstream>
+#include <iostream>
+#include <algorithm>
+#include "BitWriter.h"
+#include "BitReader.h"
+
+ShannonFano::ShannonFano()
+{
+	for (size_t i = 0; i < 256; i++)
+	{
+		frequencies.push_back(frequency(i));
+		keys.push_back(key(i));
+	}
+}
+
+void ShannonFano::generateCodes(std::vector<frequency>& frequencies, std::string prefix)
+{
+	if (frequencies.size() == 1)
+	{
+		keys[frequencies[0].c].k = prefix;
+		return;
+	}
+
+	int halfSize = 0;
+	for (size_t i = 0; i < frequencies.size(); i++)
+	{
+		halfSize += frequencies[i].count;
+	}
+	halfSize /= 2;
+	std::vector<frequency> left;
+	std::vector<frequency> right;
+
+	int sum = 0;
+	for (frequency var : frequencies)
+	{
+		if (sum < halfSize) {
+			left.push_back(var);
+			sum += var.count;
+		}
+		else {
+			right.push_back(var);
+		}
+	}
+
+	generateCodes(left, prefix + "0");
+	generateCodes(right, prefix + "1");
+
+	return;
+}
+
+void ShannonFano::commpress(std::string infile)
+{
+	std::ifstream istram(infile, std::ios::binary);
+	if (!istram.is_open()) return;
+
+	uint8_t c = istram.get();
+	while (istram.good()) {
+
+		frequencies[c].count++;
+		c = istram.get();
+
+	}
+	istram.close();
+
+
+	BitWriter writer(cof.c_str());
+
+	for (size_t i = 0; i < frequencies.size(); i++)
+	{
+		writer.writeInt(frequencies[i].count);
+	}
+
+	std::sort(frequencies.begin(), frequencies.end(), [](frequency& a, frequency& b) { return a.count > b.count; });
+	for (int i = frequencies.size() - 1; i > 0; i--) {
+		if (frequencies[i].count == 0) frequencies.pop_back();
+	}
+	generateCodes(frequencies, "");
+
+	istram.open(infile, std::ios::binary);
+	c = istram.get();
+	while (istram.good()) {
+
+		for (size_t i = 0; i < keys[c].k.size(); i++)
+		{
+			if (keys[c].k[i] == '0') writer.writeBit(false);
+			else writer.writeBit(true);
+		}
+		c = istram.get();
+	}
+
+	istram.close();
+}
+
+void ShannonFano::decommpress(std::string infile)
+{
+	BitReader reader(infile.c_str());
+
+	for (size_t i = 0; i < frequencies.size(); i++)
+	{
+		frequencies[i].count = reader.readInt();
+	}
+
+	std::sort(frequencies.begin(), frequencies.end(), [](frequency& a, frequency& b) { return a.count > b.count; });
+	for (int i = frequencies.size() - 1; i > 0; i--) {
+		if (frequencies[i].count == 0) frequencies.pop_back();
+	}
+	generateCodes(frequencies, "");
+
+	int totalCount = 0;
+	for (frequency i : frequencies) {
+		totalCount += i.count;
+	}
+
+	for (size_t i = keys.size() - 1; i > 0; i--)
+	{
+		if (keys[i].k == "") keys.erase(keys.begin() + i);
+	}
+
+	int count = 0;
+	std::string bits = "";
+	BitWriter writer(dof.c_str());
+	while (count < totalCount)
+	{
+		bool bit = reader.readBit();
+		if (bit)
+		{
+			bits += "1";
+		}
+		else
+		{
+			bits += "0";
+		}
+
+		for (size_t i = 0; i < keys.size(); i++)
+		{
+			if (keys[i].k == bits) {
+				writer.writeByte(keys[i].c);
+				bits = "";
+				count++;
+				break;
+			}
+		}
+	}
+
+}

semester_4/algoritmi_v_racunalniski_praksi/naloga_4/Naloga_4/ShannonFano.h

@@ -0,0 +1,44 @@
+#pragma once
+#include <vector>
+#include <string>
+
+class frequency {
+public:
+
+	frequency(char ch) {
+		c = ch;
+	}
+	uint8_t c;
+	int count = 0;
+};
+
+class key {
+public:
+
+	key(char ch) {
+		c = ch;
+	}
+	uint8_t c;
+	std::string k = "";
+};
+
+class ShannonFano
+{
+public:
+	ShannonFano();
+	void commpress(std::string infile);
+	void decommpress(std::string infile);
+
+private:
+
+	std::vector<key> keys;
+	std::vector<frequency> frequencies;
+
+	std::string cof = "out.bin";
+	std::string dof = "out_d.bin";
+
+	void generateCodes(std::vector<frequency>& frequencies, std::string prefix);
+
+
+};
+