A library used to manipulate the output stream of a program using ANSI escape sequences.

---

Table of contents

• Introduction
• Architectures support
  • Operating systems
  • Compilers
• List of features
  • ANSI escape sequences manipulators
  • Progress bars
  • Terminal graphics
  • Extra support for UNICODE and ANSI on Windows
• Install and use
  • Install
  • Package managers
  • Use in your device
  • Use with CMake
  • Compile examples
  • Developer debug mode and tests
• Todo
• List of known projects which use this library
• Credits
  • Project leaders
  • Other contributors
  • Stargazers over time

Introduction

osmanip is a C++ library containing useful tools to manipulate ANSI escape sequences and customize the output stream of your programs. Within this tools you can add colors and styles to the printed strings, change cursor location on the terminal and manage other tools like progress bars and terminal graphics. Using this features may be very useful to adorn your general output stream log or to perform cursor operations.

This is a fully type- and thread-safe library with automatic memory management, with only indispensable dependencies.

It can be installed from source or via vcpkg. See this section for further details.

If you want to mention this software in one of your project / articles, please cite it.

If you use this library please tell me so I can add you to the list of know projects which use this library.

If you want to contribute to the repository, please read this file before. If you have ideas to propose write a post into the discussion section.

Code documentation is generated using Doxygen and can be accessed here. An extra wiki is also provided and contains how-to guides and many examples.

Colors and styles manipulators examples:

Progress bars examples:

2D terminal-graphics examples:

The software is and will stay free, but if you want to support me with a donation it would be really appreciated!

Architectures support

Operating systems

• Linux
  • Ubuntu (tested)
• Windows (release 10 or higher)
  • Cygwin64 (tested)
  • MSYS2 (tested)
  • MinGW (tested)
  • WSL (tested)
  • Powershell (tested)
• MacOS

Compilers

• gcc:
  • C++17: 9/10/11/12
  • C++20: 10/11/12
• clang:
  • C++17: 6/7/8/9/10/11/12/13/14/15
  • C++20: 9/10/11/12/13/14/15
• MSVC:
  • C++17: 19 (only this one tested)
  • C++20: // (not tested yet)

List of features

ANSI escape sequences manipulators

• Color and style manipulation ( list of all available colors and styles here)

```c++

include

include

// Print a red string std::cout << osm::feat( osm::col, "red" ) << "This string is red!" << osm::feat( osm::rst, "color" );

// Print a bold string std::cout << osm::feat( osm::sty, "red" ) << "This string is bold!" << osm::feat( osm::rst, "bd/ft" ); ```

• Cursor manipulators

```c++

include

include

// Move the cursor right by 2 spaces std::cout << osm::feat( osm::crs, "right", 2 ) << "Cursor moved!"; ```

• Terminal control sequences ( list of all the available terminal control sequences here)

```c++

include

include

// Output a bell sound std::cout << osm::feat( osm::tcs, "bell" ); ```

• Class to manage output stream style of a program

```c++

include

include

osm::Decorator my_shell;

// Change std::cout predefined style and color myshell.setColor( "green", std::cout ); myshell.setStyle( "underlined", std::cout );

my_shell( std::cout ) << "The stdout stream has been changed using the Decorator class!" << "\n";

// Change std::cerr predefined style and color myshell.setColor( "red", std::cerr ); myshell.setStyle( "bold italics", std::cerr ); // NOTE: added 2 styles

my_shell( std::cerr ) << "The stderr stream has been changed using the Decorator class!" << "\n"; ```

More examples and how-to guides can be found here.

Why choosing this library for ANSI escape sequences manipulation:

• All the functions used to manipulate these sequences are very easy to use and don't require complex code signatures.
• All the most common ANSI sequences can be manipulated.
• Using the Decorator class you can set the style of an output stream at the beginning of your program and keep it unchanged until the end.

Progress bars

• Percentage indicator

```c++

include

include

include

osm::ProgressBar percentage_bar;

percentagebar.setMin( 5 ); percentagebar.setMax ( 46 ); percentage_bar.setStyle( "indicator", "%" );

std::cout << "This is a normal percentage bar: " << "\n"; osm::OPTION( osm::CURSOR::OFF ); // Hide cursor for better output rendering for ( int i = percentagebar.getMin(); i < percentagebar.getMax(); i++ ) { percentage_bar.update( i ); //Do some operations... } osm::OPTION( osm::CURSOR::ON ); ```

• Loading bar

```c++

include

include

include

osm::ProgressBar loading_bar( 3, 25 );

loadingbar.setStyle( "loader", "#" ); loadingbar.setBrackets( "{", "}" ); loading_bar.setMessage( "processing..." );

std::cout << "This is a loading bar: with message: " << "\n"; osm::OPTION( osm::CURSOR::OFF ); // Hide cursor for better output rendering for ( int i = loadingbar.getMin(); i < loadingbar.getMax(); i++ ) { loading_bar.update( i ); //Do some operations... } osm::OPTION( osm::CURSOR::ON ); ```

• Progress bar

```c++

include

include

include

osm::ProgressBar progress_bar( 3, 25 );

progressbar.setStyle( "complete", "%", "■" ); progressbar.setBrackets( "[", "]" ); progressbar.setMessage( "elaborating..." ); progressbar.setRemainingTimeFlag( "on" ); progress_bar.setColor( "red" );

std::cout << "This is a mixed progress bar with color and time remaining info: " << "\n"; osm::OPTION( osm::CURSOR::OFF ); // Hide cursor for better output rendering for ( int i = progressbar.getMin(); i < progressbar.getMax(); i++ ) { progress_bar.update( i ); //Do some operations... } osm::OPTION( osm::CURSOR::ON ); ```

• Progress spinner

```C++

include

include

include

osm::ProgressBar spinner;

spinner.setMin( 2 ); spinner.setMax ( 33 ); spinner.setStyle( "spinner", "/-\|" );

std::cout << "This is a progress spinner: " << "\n"; osm::OPTION( osm::CURSOR::OFF ); // Hide cursor for better output rendering for ( int i = spinner.getMin(); i < spinner.getMax(); i++ ) { spinner.update( i ); //Do some operations... } osm::OPTION( osm::CURSOR::ON ); ```

• Output redirection on file when using progress bars

```C++

include

include

include

osm::OutputRedirector redirector( "output.txt" );

std::cout << "I am printing to the console!\n";

// Redirect output to the file redirector.begin();

std::cout << "Now I am printing to a file!\n";

osm::ProgressBar my_bar; // ...

for( int i = mybar.getMin(); i < mybar.getMax(); i++ ) { // Flush the buffer at the start of each loop redirector.flush();

my_bar.update( i ); }

// Return output to the console redirector.end(); ```

More examples and how-to guides can be found here.

Why choosing this library for progress bars? Some properties:

• Extremely easy to use.
• Compatible with positive or negative variable of any standard type (integer, float, double and others).
• Maximum and minimum values can be set with any value you prefer and the progress bars will be self-built with respect to them.
• Each progress bar feature can be fully customized (messages, style, color, brackets type, time remaining info etc...) regarding to your requirements. You can also choose to use only a progress indicator or a loading bar instead of a complete progress bar.
• It is thread-safe, hence you can use also multiple progress bars simultaneously.

Terminal graphics

• Create animations

```C++

include

include

osm::Canvas canvas(10,10);

canvas.setBackground( '.', osm::feat( osm::col, "bg white" ) + osm::feat( osm::col, "black" ) ); std::cout << "Display an animation in a canvas\n";

for( uint i = 0; i < 10; i++ ) { canvas.clear(); canvas.put( 0, 2, 'x' ); canvas.put( i, 3, 'A', osm::feat( osm::col, "red" ) ); canvas.put( 5, 0, 'B', osm::feat( osm::col, "blue" ) ); canvas.put( 7, 8, 'Z', osm::feat( osm::col, "bg cyan" ) + osm::feat( osm::col, "black" ) + osm::feat( osm::sty, "bold" ) ); canvas.refresh(); } ```

• 2D graphics plots

```C++

include

include

include

osm::Plot2DCanvas plot2dcanvas( 50, 20 );

std::cout << "\n" << "Plot2DCanvas with sin and cos" << "\n"; plot2dcanvas.setBackground( ' ', osm::feat( osm::col, "bg white" ) ); plot2dcanvas.enableFrame( true ); plot2dcanvas.setFrame( osm::FrameStyle::BOX, osm::feat( osm::col, "bg white" ) + osm::feat( osm::col, "black" ) ); plot2dcanvas.enableFrame( true ); plot2dcanvas.setFrame( osm::FrameStyle::BOX, osm::feat( osm::col, "bg white" ) + osm::feat( osm::col, "black" ) ); plot2dcanvas.setScale( 1/3.14, 0.2) ;

for( float i = 0; i < 40; i++ ) { plot2dcanvas.setOffset( i/3.14, -2 ); plot2dcanvas.clear(); plot2dcanvas.draw( std::function ( -> float{ return std::cos( x ); } ), 'X', osm::feat( osm::col, "bg white" ) + osm::feat( osm::col, "bd red" ) ); plot2dcanvas.draw( std::function ( -> float{ return std::sin( x ); } ), 'X', osm::feat( osm::col, "bg white" ) + osm::feat( osm::col, "bd blue" ) ); plot2dcanvas.refresh(); sleep_for( milliseconds( 100 ) ); } ```

More examples and how-to guides can be found here.

Why choosing this library for terminal graphics:

• There are very few C++ libraries doing this job, and this is one of them.
• High level of customizability.
• A faster and most comfortable alternative to plot simple functions without the needing of GUI.

Extra support for UNICODE and ANSI on Windows

c++ // Enable ANSI escape sequences osm::OPTION( osm::ANSI::ON ); // doing some stuff... osm::OPTION( osm::ANSI::OFF );

c++ // Enable unicode characters osm::OPTION( osm::UNICODECH::ON ); // doing some stuff... osm::OPTION( osm::UNICODECH::OFF );

More examples and how-to guides can be found here.

Install and use

Install

Steps to be reproduced:

1) Download one of the releases of the repository

2) Unzip and enter the downloaded repository directory

3) Install and compile the library and its dependencies:

bash cmake -B build

Install:

bash sudo cmake --build build --target install

:warning: sudo is not required on Windows.

Mandatory prerequisites (automatically installed with the script):

• C++17 standard.
• g++ compiler.
• CMake (at least version 3.15).

Package managers

This is the list of available package managers for osmanip:

• vcpkg.

Use in your device

Tu use on or more headers of the library:

```c++

include

```

If you are using the library in a program, add the -losmanip flag to link source code.

:warning:: remember also to add -pthread flag if you want to use some thread-dependent libraries like ** progressbar/multiprogressbar.hpp** .

Use with CMake

To get an installed version of the library:

cmake find_package( osmanip )

then, to link it to a target:

cmake target_link_libraries( ${TARGET} osmanip::osmanip )

Compile examples

Examples are compiled during the installation procedure.

To run all the examples:

shell ./build/examples/osmanip_manipulators ./build/examples/osmanip_progressbar ./build/examples/osmanip_graphics ./build/examples/osmanip_redirection

:warning: executables end with .exe if you are on Windows of course.

Developer debug mode and tests

To compile tests you must build the app in debug mode:

bash cmake -B build -DCMAKE_BUILD_TYPE=Debug sudo cmake --build build --target install

:warning: remember to install the library before launching include tests, or an error will appear. :warning: if you want to build the library in debug mode, but without compiling tests use also the option -DOSMANIP_TESTS=OFF.

Tests are produced using -Wall -Wextra -pedantic flags. To check them you need some prerequisites:

• Valgrind for profiling.
• doctest for testing.
• cppcheck for testing.

The doctest package is automatically installed with the installation step. Also the clang-format package is required. The format procedure is performed automatically when compiling.

To launch all tests simultaneously:

txt ./test/all_tests.sh

EXTRA: to check that only the needed headers are include use this script:

txt ./test/IWYU.sh

Todo

• Separate progress bar class into multiple files.
• Add an elapsedTime() method to the ProgressBar class, to show elapsed progress bar time and substitute it to the already existing getTime() method.
• Benchmarking and other studies with respect to similar libraries (already in progress here).
• Add a wiki section for output_redirector.

List of know projects which use this library

• SAFD-algorithm

Credits

Project leaders

Gianluca Bianco

Other contributors

MiguelMJ

Ted Lyngmo

myermo

nick-botticelli

Joel Thomas

oz_10

Kai Pastor

Stargazers over time