### Install the library on *nix

Source: https://github.com/amokhuginnsson/replxx/blob/master/README.md

Install the compiled library to the default system location.

```bash
sudo make install
```

--------------------------------

### Install libreplxx-dev

Source: https://github.com/amokhuginnsson/replxx/wiki/How-to-Install-replxx-static-lib-deb-from-PPA

Installs the static development library package.

```bash
sudo apt install libreplxx-dev
```

--------------------------------

### Initialize Replxx Instance and Main Input Loop

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Initializes a Replxx instance, installs a window change handler, configures history size and uniqueness, and enters a main input loop. Handles EOF and adds non-empty input to history.

```cpp
#include "replxx.hxx"

using Replxx = replxx::Replxx;

int main() {
    // Create the Replxx instance
    Replxx rx;

    // Install window change handler for terminal resize events
    rx.install_window_change_handler();

    // Configure settings
    rx.set_max_history_size(128);
    rx.set_max_hint_rows(3);
    rx.set_unique_history(true);

    // Main input loop
    for (;;) {
        char const* input = rx.input("\x1b[1;32mreplxx\x1b[0m> ");

        if (input == nullptr) {
            break;  // EOF received
        }

        if (strlen(input) > 0) {
            rx.history_add(input);
            rx.print("You entered: %s\n", input);
        }
    }

    return 0;
}
```

--------------------------------

### Install the library to a custom location

Source: https://github.com/amokhuginnsson/replxx/blob/master/README.md

Use the DESTDIR variable to specify a custom installation path.

```bash
make DESTDIR=/tmp install
```

--------------------------------

### Install Library Targets

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Installs the 'replxx' library and its associated targets to the appropriate directories based on the build type.

```cmake
install(
	TARGETS replxx EXPORT replxx-targets
	RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
	LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
	ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
```

--------------------------------

### List installed files

Source: https://github.com/amokhuginnsson/replxx/wiki/How-to-Install-replxx-static-lib-deb-from-PPA

Displays the contents of the deb package to verify installed paths and files.

```bash
$ dpkg-deb -c ./libreplxx-dev_0.0.4-1_amd64.deb 
drwxr-xr-x root/root         0 2022-11-01 14:18 ./
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/include/
-rw-r--r-- root/root     24898 2021-10-20 14:53 ./usr/include/replxx.h
-rw-r--r-- root/root     22575 2021-10-20 14:53 ./usr/include/replxx.hxx
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/lib/
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/lib/x86_64-linux-gnu/
-rw-r--r-- root/root    556514 2022-11-01 14:18 ./usr/lib/x86_64-linux-gnu/libreplxx.a
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/share/
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/share/cmake/
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/share/cmake/replxx/
-rw-r--r-- root/root      1382 2022-11-01 14:18 ./usr/share/cmake/replxx/replxx-config-version.cmake
-rw-r--r-- root/root       483 2022-11-01 14:18 ./usr/share/cmake/replxx/replxx-config.cmake
-rw-r--r-- root/root       850 2022-11-01 14:18 ./usr/share/cmake/replxx/replxx-targets-none.cmake
-rw-r--r-- root/root      3535 2022-11-01 14:18 ./usr/share/cmake/replxx/replxx-targets.cmake
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/share/doc/
drwxr-xr-x root/root         0 2022-11-01 14:18 ./usr/share/doc/libreplxx-dev/
-rw-r--r-- root/root       106 2022-11-01 14:18 ./usr/share/doc/libreplxx-dev/README.Debian
-rw-r--r-- root/root       140 2022-11-01 14:18 ./usr/share/doc/libreplxx-dev/changelog.Debian.gz
-rw-r--r-- root/root      7276 2022-11-01 14:18 ./usr/share/doc/libreplxx-dev/copyright
```

--------------------------------

### Install Configuration Files

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Installs the generated CMake configuration files ('replxx-config.cmake' and 'replxx-config-version.cmake') for package management.

```cmake
install(
	FILES
		"${PROJECT_BINARY_DIR}/replxx-config-version.cmake"
		"${PROJECT_BINARY_DIR}/replxx-config.cmake"
	DESTINATION
		${CMAKE_INSTALL_DATADIR}/cmake/replxx
)
```

--------------------------------

### Install Export Targets

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Installs the export set for 'replxx-targets' to enable CMake to find the package.

```cmake
install(
	EXPORT replxx-targets
	NAMESPACE replxx::
	DESTINATION ${CMAKE_INSTALL_DATADIR}/cmake/replxx
)
```

--------------------------------

### Target Include Directories

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Configures include directories for the 'replxx' target, distinguishing between build and installation paths.

```cmake
target_include_directories(
	replxx
	PUBLIC
		$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
		$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
	PRIVATE
		$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>
)
```

--------------------------------

### Conditional Build Options

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Defines options for building examples and generating package configuration files, controlled by the build type and source directory.

```cmake
cmake_dependent_option(
	REPLXX_BUILD_EXAMPLES
	"Build the examples" ON
	"CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR"
	OFF
)
cmake_dependent_option(
	REPLXX_BUILD_PACKAGE
	"Generate package target" ON
	"CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR"
	OFF
)
```

--------------------------------

### C API Initialization and Main Loop

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Initialize the Replxx library, configure settings like history size and hint rows, load history, and enter the main input loop. Handles terminal resize and potential signal interruptions.

```c
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "replxx.h"

int main(void) {
    // Initialize replxx
    Replxx* replxx = replxx_init();

    // Install window change handler for terminal resize
    replxx_install_window_change_handler(replxx);

    // Configure settings
    replxx_set_max_history_size(replxx, 100);
    replxx_set_max_hint_rows(replxx, 3);
    replxx_set_unique_history(replxx, 1);

    // Load history
    replxx_history_load(replxx, "./history.txt");

    printf("Type 'quit' to exit\n");

    // Main loop
    while (1) {
        char const* result = NULL;

        // Handle EAGAIN (signal interrupted)
        do {
            result = replxx_input(replxx, "\x1b[1;32mreplxx\x1b[0m> ");
        } while ((result == NULL) && (errno == EAGAIN));

        if (result == NULL) {
            printf("\n");
            break;
        }

        if (strcmp(result, "quit") == 0) {
            replxx_history_add(replxx, result);
            break;
        }

        if (*result != '\0') {
            replxx_print(replxx, "You entered: %s\n", result);
            replxx_history_add(replxx, result);
        }
    }

    // Save history
    replxx_history_save(replxx, "./history.txt");

    // Cleanup
    replxx_end(replxx);

    return 0;
}

```

--------------------------------

### Manage Key Bindings and Input State in C

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Demonstrates how to define custom key handlers using ReplxxState and bind them alongside built-in actions.

```c
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include "replxx.h"

// Custom handler to convert input to uppercase
ReplxxActionResult uppercase_handler(int code, void* userData) {
    Replxx* replxx = (Replxx*)userData;
    ReplxxState state;

    // Get current state
    replxx_get_state(replxx, &state);

    // Duplicate and transform text
    char* text = strdup(state.text);
    for (int i = 0; text[i]; i++) {
        text[i] = toupper(text[i]);
    }

    // Set modified state
    state.text = text;
    replxx_set_state(replxx, &state);

    free(text);
    return REPLXX_ACTION_RESULT_CONTINUE;
}

// Custom handler using built-in action
ReplxxActionResult word_delete_handler(int code, void* userData) {
    Replxx* replxx = (Replxx*)userData;
    return replxx_invoke(replxx, REPLXX_ACTION_KILL_TO_BEGINING_OF_WORD, 0);
}

int main(void) {
    Replxx* replxx = replxx_init();

    // Bind built-in actions by name
    replxx_bind_key_internal(replxx, REPLXX_KEY_BACKSPACE, "delete_character_left_of_cursor");
    replxx_bind_key_internal(replxx, REPLXX_KEY_DELETE, "delete_character_under_cursor");
    replxx_bind_key_internal(replxx, REPLXX_KEY_LEFT, "move_cursor_left");
    replxx_bind_key_internal(replxx, REPLXX_KEY_RIGHT, "move_cursor_right");
    replxx_bind_key_internal(replxx, REPLXX_KEY_UP, "history_previous");
    replxx_bind_key_internal(replxx, REPLXX_KEY_DOWN, "history_next");
    replxx_bind_key_internal(replxx, REPLXX_KEY_TAB, "complete_line");
    replxx_bind_key_internal(replxx, REPLXX_KEY_CONTROL('R'), "history_incremental_search");
    replxx_bind_key_internal(replxx, REPLXX_KEY_CONTROL('L'), "clear_screen");

    // Bind custom handlers
    replxx_bind_key(replxx, REPLXX_KEY_F2, uppercase_handler, replxx);
    replxx_bind_key(replxx, REPLXX_KEY_CONTROL('W'), word_delete_handler, replxx);

    // Emulate key presses programmatically
    // replxx_emulate_key_press(replxx, 'H');
    // replxx_emulate_key_press(replxx, 'i');

    printf("Press F2 to uppercase, Ctrl+W to delete word\n");

    while (1) {
        char const* input = replxx_input(replxx, "> ");
        if (input == NULL) break;
        if (*input != '\0') {
            replxx_print(replxx, "Input: %s\n", input);
            replxx_history_add(replxx, input);
        }
    }

    replxx_end(replxx);
    return 0;
}
```

--------------------------------

### Create build directory on *nix

Source: https://github.com/amokhuginnsson/replxx/blob/master/README.md

Prepare a build directory for the compilation process.

```bash
mkdir -p build && cd build
```

--------------------------------

### Create build directory on Windows

Source: https://github.com/amokhuginnsson/replxx/blob/master/README.md

Prepare a build directory using the MS-DOS command prompt.

```cmd
md build
cd build
```

--------------------------------

### Build the library on *nix

Source: https://github.com/amokhuginnsson/replxx/blob/master/README.md

Compile the library using CMake and make.

```bash
cmake -DCMAKE_BUILD_TYPE=Release .. && make
```

--------------------------------

### Build and Configure Replxx with CMake

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Provides shell commands for building the library and a snippet for integrating it into a project's CMakeLists.txt.

```bash
# Clone the repository
git clone https://github.com/AmokHuginnsson/replxx.git
cd replxx

# Create build directory
mkdir -p build && cd build

# Configure and build
cmake -DCMAKE_BUILD_TYPE=Release ..
make

# Install (optional)
sudo make install

# Or install to custom location
make DESTDIR=/opt/replxx install
```

```cmake
# CMakeLists.txt for your application
cmake_minimum_required(VERSION 3.5)
project(myapp)

# Find replxx (if installed)
find_package(replxx REQUIRED)

# Or use as subdirectory
```

--------------------------------

### Add PPA and update package list

Source: https://github.com/amokhuginnsson/replxx/wiki/How-to-Install-replxx-static-lib-deb-from-PPA

Configures the system to use the siliconja/replxx PPA and refreshes the local package index.

```bash
sudo add-apt-repository ppa:siliconja/replxx
sudo apt update
```

--------------------------------

### Bind Custom Key Handlers in C++

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Demonstrates binding built-in actions via string identifiers and custom C++ functions to specific key combinations.

```cpp
#include "replxx.hxx"
#include <iostream>
#include <functional>

using Replxx = replxx::Replxx;

// Custom key handler that shows a message
Replxx::ACTION_RESULT show_message(
    Replxx& rx,
    std::string message,
    char32_t code
) {
    rx.invoke(Replxx::ACTION::CLEAR_SELF, 0);
    rx.print("%s\n", message.c_str());
    rx.invoke(Replxx::ACTION::REPAINT, 0);
    return Replxx::ACTION_RESULT::CONTINUE;
}

// Custom handler to convert line to uppercase
Replxx::ACTION_RESULT uppercase_line(Replxx& rx, char32_t code) {
    Replxx::State state = rx.get_state();
    std::string text(state.text());
    for (char& c : text) {
        c = toupper(c);
    }
    rx.set_state(Replxx::State(text.c_str(), state.cursor_position()));
    return Replxx::ACTION_RESULT::CONTINUE;
}

int main() {
    Replxx rx;

    using namespace std::placeholders;

    // Bind built-in actions to keys by name
    rx.bind_key_internal(Replxx::KEY::BACKSPACE, "delete_character_left_of_cursor");
    rx.bind_key_internal(Replxx::KEY::DELETE, "delete_character_under_cursor");
    rx.bind_key_internal(Replxx::KEY::LEFT, "move_cursor_left");
    rx.bind_key_internal(Replxx::KEY::RIGHT, "move_cursor_right");
    rx.bind_key_internal(Replxx::KEY::UP, "history_previous");
    rx.bind_key_internal(Replxx::KEY::DOWN, "history_next");
    rx.bind_key_internal(Replxx::KEY::HOME, "move_cursor_to_begining_of_line");
    rx.bind_key_internal(Replxx::KEY::END, "move_cursor_to_end_of_line");
    rx.bind_key_internal(Replxx::KEY::TAB, "complete_line");

    // Bind Ctrl+R for incremental history search
    rx.bind_key_internal(Replxx::KEY::control('R'), "history_incremental_search");

    // Bind Ctrl+W to kill word
    rx.bind_key_internal(Replxx::KEY::control('W'), "kill_to_begining_of_word");

    // Bind Ctrl+U to kill line
    rx.bind_key_internal(Replxx::KEY::control('U'), "kill_to_begining_of_line");

    // Bind Ctrl+K to kill to end of line
    rx.bind_key_internal(Replxx::KEY::control('K'), "kill_to_end_of_line");

    // Bind Ctrl+Y to yank (paste from kill ring)
    rx.bind_key_internal(Replxx::KEY::control('Y'), "yank");

    // Bind Ctrl+L to clear screen
    rx.bind_key_internal(Replxx::KEY::control('L'), "clear_screen");

    // Bind custom handler to F1
    rx.bind_key(Replxx::KEY::F1, std::bind(&show_message, std::ref(rx), "Help: Type commands and press Enter", _1));

    // Bind custom handler to F2 (uppercase current line)
    rx.bind_key(Replxx::KEY::F2, std::bind(&uppercase_line, std::ref(rx), _1));

    // Bind custom handler to Ctrl+Enter for commit
    rx.bind_key_internal(Replxx::KEY::control(Replxx::KEY::ENTER), "commit_line");

    std::cout << "Press F1 for help, F2 to uppercase line\n";

    for (;;) {
        char const* input = rx.input("> ");
        if (input == nullptr) break;
        if (strlen(input) > 0) {
            rx.history_add(input);
        }
    }

    return 0;
}
```

--------------------------------

### Configure Multiline Input and Hooks in C++

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Shows how to enable multiline editing, bracketed paste, and register modification callbacks for input processing.

```cpp
#include "replxx.hxx"
#include <iostream>

using Replxx = replxx::Replxx;

// Modify callback to update prompt with input length
void modify_hook(std::string& line, int& cursorPosition) {
    // This callback is invoked on every modification
    // Can be used to transform input or update state
}

int main() {
    Replxx rx;

    // Enable multiline indentation (indent continuation lines)
    rx.set_indent_multiline(true);

    // Enable bracketed paste mode for proper multiline paste
    rx.enable_bracketed_paste();

    // Register modify callback (optional)
    rx.set_modify_callback(modify_hook);

    // Set case-insensitive completion and history search
    rx.set_ignore_case(true);

    std::cout << "Multiline mode enabled. Press Ctrl+Enter to submit.\n";
    std::cout << "Use Enter for new line, arrow keys to navigate.\n\n";

    for (;;) {
        char const* input = rx.input("\x1b[1;32mmulti\x1b[0m> ");

        if (input == nullptr) {
            break;
        }

        std::string text(input);
        if (text == ".quit") {
            break;
        }

        if (!text.empty()) {
            rx.history_add(text);

            // Count lines
            int lines = 1;
            for (char c : text) {
                if (c == '\n') lines++;
            }

            rx.print("Received %d line(s):\n%s\n", lines, text.c_str());
        }
    }

    // Disable bracketed paste before exit
    rx.disable_bracketed_paste();

    return 0;
}
```

--------------------------------

### Implement History Scanning and Persistence in C

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Shows how to iterate through history entries and manage history files using sync, load, and save operations.

```c
#include <stdio.h>
#include <string.h>
#include "replxx.h"

void show_history(Replxx* replxx) {
    int size = replxx_history_size(replxx);
    printf("History contains %d entries:\n", size);

    // Start history scan
    ReplxxHistoryScan* scan = replxx_history_scan_start(replxx);
    ReplxxHistoryEntry entry;
    int index = 0;

    // Iterate through history
    while (replxx_history_scan_next(replxx, scan, &entry) == 0) {
        replxx_print(replxx, "%4d [%s]: %s\n",
            index++,
            entry.timestamp,
            entry.text);
    }

    // Stop scan
    replxx_history_scan_stop(replxx, scan);
}

int main(void) {
    Replxx* replxx = replxx_init();
    char const* history_file = "./replxx_history.txt";

    // Configure history
    replxx_set_max_history_size(replxx, 500);
    replxx_set_unique_history(replxx, 1);

    // Load existing history
    if (replxx_history_load(replxx, history_file) == 0) {
        printf("History loaded from %s\n", history_file);
    }

    while (1) {
        char const* input = replxx_input(replxx, "> ");
        if (input == NULL) break;

        if (strcmp(input, "/history") == 0) {
            show_history(replxx);
        } else if (strcmp(input, "/clear") == 0) {
            replxx_history_clear(replxx);
            printf("History cleared\n");
        } else if (strcmp(input, "/quit") == 0) {
            replxx_history_add(replxx, input);
            break;
        } else if (*input != '\0') {
            replxx_history_add(replxx, input);
        }
    }

    // Sync history (load, merge, save)
    replxx_history_sync(replxx, history_file);

    // Alternative: just save without merge
    // replxx_history_save(replxx, history_file);

    replxx_end(replxx);
    return 0;
}
```

--------------------------------

### Configure Package Configuration File

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Generates the 'replxx-config.cmake' file from a template for package management.

```cmake
configure_package_config_file(
	"${PROJECT_SOURCE_DIR}/replxx-config.cmake.in"
	"${PROJECT_BINARY_DIR}/replxx-config.cmake"
	INSTALL_DESTINATION ${CMAKE_INSTALL_DATADIR}/cmake/replxx
	NO_CHECK_REQUIRED_COMPONENTS_MACRO
	NO_SET_AND_CHECK_MACRO
)
```

--------------------------------

### Set Hint and Highlighter Callbacks in C

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Register custom hint and syntax highlighting callbacks to enhance user experience. The hint callback suggests completions, while the highlighter callback colors input based on character type.

```c
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "replxx.h"

char* examples[] = {"help", "history", "quit", NULL};

// Hint callback
void hint_hook(
    char const* context,
    replxx_hints* hints,
    int* contextLen,
    ReplxxColor* color,
    void* userData
) {
    char** words = (char**)userData;

    int len = strlen(context);
    int start = len;
    while (start > 0 && context[start - 1] != ' ') {
        start--;
    }

    char const* prefix = context + start;
    int prefixLen = len - start;
    *contextLen = prefixLen;

    if (prefixLen < 1) return;

    int matchCount = 0;
    for (int i = 0; words[i] != NULL; i++) {
        if (strncmp(words[i], prefix, prefixLen) == 0) {
            replxx_add_hint(hints, words[i]);
            matchCount++;
        }
    }

    // Set color based on match count
    *color = (matchCount == 1) ? REPLXX_COLOR_GREEN : REPLXX_COLOR_GRAY;
}

// Highlighter callback
void highlighter_hook(
    char const* input,
    ReplxxColor* colors,
    int size,
    void* userData
) {
    for (int i = 0; i < size; i++) {
        if (isdigit(input[i])) {
            colors[i] = REPLXX_COLOR_BRIGHTMAGENTA;
        } else if (input[i] == '"' || input[i] == '\'') {
            colors[i] = REPLXX_COLOR_BRIGHTGREEN;
        } else if (ispunct(input[i])) {
            colors[i] = REPLXX_COLOR_BRIGHTBLUE;
        }
    }
}

int main(void) {
    Replxx* replxx = replxx_init();

    // Register callbacks
    replxx_set_hint_callback(replxx, hint_hook, examples);
    replxx_set_highlighter_callback(replxx, highlighter_hook, NULL);

    // Configure hints
    replxx_set_max_hint_rows(replxx, 4);
    replxx_set_hint_delay(replxx, 100);

    while (1) {
        char const* input = replxx_input(replxx, "> ");
        if (input == NULL) break;
        if (*input != '\0') {
            replxx_history_add(replxx, input);
        }
    }

    replxx_end(replxx);
    return 0;
}

```

--------------------------------

### Link replxx in CMake

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Use these commands in your CMakeLists.txt to link the replxx library. Define REPLXX_STATIC if you are performing static linking.

```cmake
add_subdirectory(replxx)

add_executable(myapp main.cpp)
target_link_libraries(myapp PRIVATE replxx::replxx)

# For static linking, define REPLXX_STATIC
target_compile_definitions(myapp PRIVATE REPLXX_STATIC)
```

--------------------------------

### Write Package Version File

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Creates a 'replxx-config-version.cmake' file to specify the package version compatibility.

```cmake
write_basic_package_version_file(
	"${PROJECT_BINARY_DIR}/replxx-config-version.cmake"
	COMPATIBILITY AnyNewerVersion
)
```

--------------------------------

### Generate Visual Studio solution files

Source: https://github.com/amokhuginnsson/replxx/blob/master/README.md

Generate project files for Visual Studio using CMake for 32-bit or 64-bit architectures.

```bash
cmake -G "Visual Studio 12 2013" -DCMAKE_BUILD_TYPE=Release ..
```

```bash
cmake -G "Visual Studio 12 2013 Win64" -DCMAKE_BUILD_TYPE=Release ..
```

--------------------------------

### Define replxx Library

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Adds the 'replxx' library target and creates an alias 'replxx::replxx'.

```cmake
add_library(replxx ${replxx-sources})
add_library(replxx::replxx ALIAS replxx)
```

--------------------------------

### Set Target Properties

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Configures properties for the 'replxx' target, including versioning and postfixes for different build types.

```cmake
set_target_properties(replxx PROPERTIES VERSION ${PROJECT_VERSION})

set_property(TARGET replxx PROPERTY DEBUG_POSTFIX -d)
set_property(TARGET replxx PROPERTY RELWITHDEBINFO_POSTFIX -rd)
set_property(TARGET replxx PROPERTY MINSIZEREL_POSTFIX)
if ( NOT BUILD_SHARED_LIBS AND MSVC )
	set_property(TARGET replxx PROPERTY OUTPUT_NAME replxx-static)
endif()
```

--------------------------------

### Project Information Variables

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Sets variables for project URL, display name, and contact information.

```cmake
set(REPLXX_URL_INFO_ABOUT "https://github.com/AmokHuginnsson/replxx")
set(REPLXX_DISPLAY_NAME "replxx")
set(REPLXX_CONTACT "amok@codestation.org")
```

--------------------------------

### Target Link Options and Libraries

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Sets link options and libraries for the 'replxx' target, including debug symbols, coverage flags, and the Threads library. Handles different CMake versions for link options.

```cmake
if (NOT CMAKE_VERSION VERSION_LESS 3.13)
	target_link_options(
		replxx
		PRIVATE
			$<$<AND:$<CONFIG:Debug>,$<CXX_COMPILER_ID:GNU>>:-g -ggdb -g3 -ggdb3>
			$<${coverage-config}:--coverage>
			$<${is-msvc}:/ignore:4099>
	)
else()
# "safest" way prior to 3.13
	target_link_libraries(
		replxx
		PRIVATE
			$<${coverage-config}:--coverage>
			$<${is-msvc}:/ignore:4099>
	)
endif()
target_link_libraries(replxx PUBLIC Threads::Threads)
```

--------------------------------

### Register Syntax Highlighter Callback

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Register a callback function to provide custom syntax highlighting for input. The callback receives the input string and a color buffer to fill based on patterns like numbers and strings.

```cpp
#include "replxx.hxx"
#include <regex>
#include <unordered_map>

using Replxx = replxx::Replxx;

// Keyword to color mapping
std::unordered_map<std::string, Replxx::Color> keywords = {
    {"select", Replxx::Color::BRIGHTBLUE},
    {"from", Replxx::Color::BRIGHTBLUE},
    {"where", Replxx::Color::BRIGHTBLUE},
    {"insert", Replxx::Color::BRIGHTGREEN},
    {"update", Replxx::Color::YELLOW},
    {"delete", Replxx::Color::BRIGHTRED}
};

// Highlighter callback function
void highlighter_hook(
    std::string const& context,
    Replxx::colors_t& colors
) {
    // Highlight numbers in yellow
    std::regex number_regex("[0-9]+");
    std::smatch match;
    std::string str = context;
    size_t pos = 0;

    while (std::regex_search(str, match, number_regex)) {
        pos += match.prefix().length();
        for (size_t i = 0; i < match[0].length(); ++i) {
            colors[pos + i] = Replxx::Color::YELLOW;
        }
        pos += match[0].length();
        str = match.suffix();
    }

    // Highlight strings in green
    std::regex string_regex("\"[^\"]*\"|'[^']*'");
    str = context;
    pos = 0;

    while (std::regex_search(str, match, string_regex)) {
        pos += match.prefix().length();
        for (size_t i = 0; i < match[0].length(); ++i) {
            colors[pos + i] = Replxx::Color::BRIGHTGREEN;
        }
        pos += match[0].length();
        str = match.suffix();
    }
}

int main() {
    Replxx rx;

    // Register the highlighter callback
    rx.set_highlighter_callback(highlighter_hook);

    // Enable colors (default is enabled)
    rx.set_no_color(false);

    for (;;) {
        char const* input = rx.input("> ");
        if (input == nullptr) break;
        if (strlen(input) > 0) {
            rx.history_add(input);
        }
    }

    return 0;
}

```

--------------------------------

### Target Compile Options

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Configures compiler-specific options for the 'replxx' target, including optimization levels, debug symbols, and warnings.

```cmake
target_compile_options(
	replxx
	PRIVATE
		$<$<AND:$<CONFIG:RelWithDebInfo>,${compiler-id-clang-or-gnu}>:-fomit-frame-pointer>
		$<$<AND:$<CONFIG:MinSizeRel>,${compiler-id-clang-or-gnu}>:-Os>
		$<$<AND:$<CONFIG:Debug>,$<CXX_COMPILER_ID:GNU>>:-g -ggdb -g3 -ggdb3>
		$<${coverage-config}:-O0 --coverage>
		$<${coverage-config}:-fno-inline -fno-default-inline>
		$<${coverage-config}:-fno-inline-small-functions>
		$<${compiler-id-clang-or-gnu}:-Wall -Wextra>
		$<$<CXX_COMPILER_ID:GNU>:-Wno-unknown-pragmas>
)
```

--------------------------------

### Set Contextual Hint Callback

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Registers a hint callback function that provides contextual hints displayed as the user types. Configures hint display settings like maximum rows and delay.

```cpp
#include "replxx.hxx"
#include <vector>
#include <string>

using Replxx = replxx::Replxx;

std::vector<std::string> commands = {
    ".help", ".history", ".quit", ".exit", ".clear"
};

// Hint callback function
Replxx::hints_t hint_hook(
    std::string const& context,
    int& contextLen,
    Replxx::Color& color
) {
    Replxx::hints_t hints;

    // Only show hints if user has typed at least 2 characters
    std::string prefix = context.substr(context.length() - contextLen);
    if (prefix.size() < 2) {
        return hints;
    }

    // Find matching hints
    for (auto const& cmd : commands) {
        if (cmd.compare(0, prefix.size(), prefix) == 0) {
            hints.push_back(cmd);
        }
    }

    // Set hint color to green if exactly one match
    if (hints.size() == 1) {
        color = Replxx::Color::GREEN;
    } else {
        color = Replxx::Color::GRAY;
    }

    return hints;
}

int main() {
    Replxx rx;

    // Register the hint callback
    rx.set_hint_callback(hint_hook);

    // Configure hint display
    rx.set_max_hint_rows(3);      // Show up to 3 hint rows
    rx.set_hint_delay(100);       // 100ms delay before showing hints

    for (;;) {
        char const* input = rx.input("> ");
        if (input == nullptr) break;
        if (strlen(input) > 0) {
            rx.history_add(input);
        }
    }

    return 0;
}
```

--------------------------------

### Include CMake Helper Modules

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Includes standard CMake modules for package configuration, dependent options, and generating export headers.

```cmake
include(CMakePackageConfigHelpers)
include(CMakeDependentOption)
include(GenerateExportHeader)
include(GNUInstallDirs)
```

--------------------------------

### Default Build Type

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Sets the default build type to 'Release' if it is not already defined, and warns the user.

```cmake
if (NOT CMAKE_BUILD_TYPE)
	message(AUTHOR_WARNING "CMAKE_BUILD_TYPE not set. Defaulting to Release")
	set(CMAKE_BUILD_TYPE Release)
endif()
```

--------------------------------

### Target Compile Definitions

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Sets compile definitions for the 'replxx' target, including static/shared library flags and Windows-specific warnings.

```cmake
target_compile_definitions(
	replxx
	PUBLIC
		$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:REPLXX_STATIC>
		$<$<BOOL:${BUILD_SHARED_LIBS}>:REPLXX_BUILDING_DLL>
	PRIVATE
		$<$<CXX_COMPILER_ID:MSVC>:_CRT_SECURE_NO_WARNINGS=1 /ignore:4503>
)
```

--------------------------------

### Set Minimum CMake Version and Project Details

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Specifies the minimum required CMake version and defines project metadata like name, version, and languages.

```cmake
cmake_minimum_required(VERSION 3.5)
project(
	replxx
	# HOMEPAGE_URL "https://github.com/AmokHuginnsson/replxx"
	# DESCRIPTION "replxx - Read Evaluate Print Loop library"
	VERSION 0.0.4
	LANGUAGES CXX C
)
```

--------------------------------

### Find Source Files

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Uses file(GLOB) to find all source files matching the defined patterns.

```cmake
file(GLOB replxx-sources ${replxx-source-patterns})
```

--------------------------------

### C++ Rich Color Highlighting

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Implement custom syntax highlighting with rich terminal colors, including 256-color support, backgrounds, and text attributes. This function is designed to be passed to Replxx's set_highlighter_callback.

```cpp
#include "replxx.hxx"

using Replxx = replxx::Replxx;
using namespace replxx::color;

void highlighter_with_rich_colors(
    std::string const& context,
    Replxx::colors_t& colors
) {
    for (size_t i = 0; i < context.length(); ++i) {
        char c = context[i];

        if (isdigit(c)) {
            // Yellow number with bold
            colors[i] = bold(Replxx::Color::YELLOW);
        } else if (c == '"' || c == '"') {
            // Green string delimiter with underline
            colors[i] = underline(Replxx::Color::BRIGHTGREEN);
        } else if (ispunct(c)) {
            // Use 6x6x6 RGB color for punctuation (orange)
            colors[i] = rgb666(5, 3, 0);
        } else if (isupper(c)) {
            // Use grayscale for uppercase (bright gray)
            colors[i] = grayscale(20);
        }
    }

    // Combine foreground and background colors
    // Example: red text on yellow background
    if (context.find("error") != std::string::npos) {
        size_t pos = context.find("error");
        for (size_t i = 0; i < 5; ++i) {
            colors[pos + i] = Replxx::Color::BRIGHTRED | bg(Replxx::Color::YELLOW);
        }
    }

    // Use bold + underline + color combination
    if (context.find("warning") != std::string::npos) {
        size_t pos = context.find("warning");
        for (size_t i = 0; i < 7; ++i) {
            colors[pos + i] = bold(underline(Replxx::Color::YELLOW));
        }
    }
}

int main() {
    Replxx rx;

    rx.set_highlighter_callback(highlighter_with_rich_colors);

    // Demonstrate available basic colors
    rx.print("Basic colors:\n");
    rx.print("  BLACK, RED, GREEN, BROWN, BLUE, MAGENTA, CYAN, LIGHTGRAY\n");
    rx.print("  GRAY, BRIGHTRED, BRIGHTGREEN, YELLOW, BRIGHTBLUE\n");
    rx.print("  BRIGHTMAGENTA, BRIGHTCYAN, WHITE, DEFAULT\n\n");

    rx.print("Extended colors:\n");
    rx.print("  rgb666(r,g,b) - 6x6x6 RGB cube (r,g,b: 0-5)\n");
    rx.print("  grayscale(level) - 24 grayscale levels (0-23)\n\n");

    rx.print("Attributes:\n");
    rx.print("  bold(color), underline(color), bg(color)\n\n");

    for (;;) {
        char const* input = rx.input("> ");
        if (input == nullptr) break;
        if (strlen(input) > 0) {
            rx.history_add(input);
        }
    }

    return 0;
}

```

--------------------------------

### Set Completion Callback in C

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Register a custom completion callback to populate the completions list based on user input context. The callback receives the current input context and a list to add completions to. User data can be passed for custom logic.

```c
#include <stdio.h>
#include <string.h>
#include "replxx.h"

char* examples[] = {
    "help", "history", "quit", "exit", "clear",
    "select", "insert", "update", "delete", NULL
};

void completion_hook(
    char const* context,
    replxx_completions* completions,
    int* contextLen,
    void* userData
) {
    char** words = (char**)userData;

    // Find the start of the current word
    int len = strlen(context);
    int start = len;
    while (start > 0 && context[start - 1] != ' ') {
        start--;
    }

    char const* prefix = context + start;
    int prefixLen = len - start;
    *contextLen = prefixLen;

    // Add matching completions
    for (int i = 0; words[i] != NULL; i++) {
        if (strncmp(words[i], prefix, prefixLen) == 0) {
            // Add plain completion
            replxx_add_completion(completions, words[i]);

            // Or add colored completion
            // replxx_add_color_completion(completions, words[i], REPLXX_COLOR_GREEN);
        }
    }
}

int main(void) {
    Replxx* replxx = replxx_init();

    // Register completion callback with user data
    replxx_set_completion_callback(replxx, completion_hook, examples);

    // Configure completion behavior
    replxx_set_word_break_characters(replxx, " \t\n");
    replxx_set_completion_count_cutoff(replxx, 50);
    replxx_set_double_tab_completion(replxx, 0);
    replxx_set_complete_on_empty(replxx, 1);

    while (1) {
        char const* input = replxx_input(replxx, "> ");
        if (input == NULL) break;
        if (*input != '\0') {
            replxx_history_add(replxx, input);
        }
    }

    replxx_end(replxx);
    return 0;
}

```

--------------------------------

### Generate Export Header

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Generates a header file for exporting symbols from the replxx library.

```cmake
generate_export_header(replxx)
```

--------------------------------

### Source File Patterns

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Defines the patterns for source files to be included in the build. Includes an adjustment for CMake versions greater than 3.11.

```cmake
set(replxx-source-patterns "src/*.cpp" "src/*.cxx")

if (CMAKE_VERSION VERSION_GREATER 3.11)
	list(INSERT replxx-source-patterns 0 CONFIGURE_DEPENDS)
endif()
```

--------------------------------

### Set C++ and C Standard Versions

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Configures the C++ and C language standards to be used for compilation. Defaults to C++11 and C99 if not already defined.

```cmake
if (NOT DEFINED CMAKE_CXX_STANDARD)
	set(CMAKE_CXX_STANDARD 11)
endif()

if (NOT DEFINED CMAKE_C_STANDARD)
	set(CMAKE_C_STANDARD 99)
endif()
```

--------------------------------

### Find Required Packages

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Locates and loads the 'Threads' package, which is necessary for multi-threaded operations.

```cmake
find_package(Threads)
```

--------------------------------

### Set Tab Completion Callback

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Registers a completion callback function that provides suggestions based on the current input context. Configures tab completion behavior like word break characters and double-tab completion.

```cpp
#include "replxx.hxx"
#include <vector>
#include <string>

using Replxx = replxx::Replxx;

// Define available commands for completion
std::vector<std::string> commands = {
    ".help", ".history", ".quit", ".exit", ".clear",
    "hello", "world", "database", "select", "insert"
};

// Completion callback function
Replxx::completions_t completion_hook(
    std::string const& context,
    int& contextLen
) {
    Replxx::completions_t completions;

    // Get the prefix to match
    std::string prefix = context.substr(context.length() - contextLen);

    // Find matching completions
    for (auto const& cmd : commands) {
        if (cmd.compare(0, prefix.size(), prefix) == 0) {
            // Add completion with optional color
            completions.emplace_back(cmd, Replxx::Color::DEFAULT);
        }
    }

    return completions;
}

int main() {
    Replxx rx;

    // Register the completion callback
    rx.set_completion_callback(completion_hook);

    // Configure completion behavior
    rx.set_word_break_characters(" \n\t.,-%!;:=*~^'"/?<>|[](){}");
    rx.set_completion_count_cutoff(128);  // Paginate if more than 128 completions
    rx.set_double_tab_completion(false);  // Complete on single tab
    rx.set_complete_on_empty(true);       // Show completions on empty input
    rx.set_beep_on_ambiguous_completion(false);

    for (;;) {
        char const* input = rx.input("> ");
        if (input == nullptr) break;
        if (strlen(input) > 0) {
            rx.history_add(input);
        }
    }

    return 0;
}
```

--------------------------------

### Manage Command History

Source: https://context7.com/amokhuginnsson/replxx/llms.txt

Configure and manage command history, including setting maximum size, enabling unique entries, loading from and saving to files, and clearing history. Supports scanning history entries.

```cpp
#include "replxx.hxx"
#include <fstream>
#include <iostream>
#include <iomanip>

using Replxx = replxx::Replxx;

int main() {
    Replxx rx;
    std::string history_file = "./history.txt";

    // Set maximum history size
    rx.set_max_history_size(1000);

    // Enable unique history (no duplicate entries)
    rx.set_unique_history(true);

    // Load history from file
    std::ifstream ifs(history_file);
    if (ifs.is_open()) {
        rx.history_load(ifs);
        ifs.close();
    }

    for (;;) {
        char const* input = rx.input("> ");
        if (input == nullptr) break;

        std::string cmd(input);

        if (cmd == ".history") {
            // Scan and display history
            Replxx::HistoryScan hs = rx.history_scan();
            int index = 0;
            while (hs.next()) {
                std::cout << std::setw(4) << index++ << ": "
                          << hs.get().text() << std::endl;
            }
        } else if (cmd == ".clear_history") {
            rx.history_clear();
            std::cout << "History cleared" << std::endl;
        } else if (cmd == ".quit") {
            rx.history_add(cmd);
            break;
        } else if (!cmd.empty()) {
            rx.history_add(cmd);
            std::cout << "Executed: " << cmd << std::endl;
        }
    }

    // Save history to file (merges with existing)
    rx.history_sync(history_file);

    // Alternative: save without merging
    // std::ofstream ofs(history_file);
    // rx.history_save(ofs);

    return 0;
}

```

--------------------------------

### Windows Export Symbols and Standard Requirements

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Enables exporting all symbols on Windows for shared libraries and enforces C++ standard compliance.

```cmake
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS ON)
```

--------------------------------

### Coverage Build Configuration

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Sets a variable to determine if coverage compilation flags should be applied, based on build configuration and compiler.

```cmake
set(coverage-config $<AND:$<CONFIG:Coverage>,$<OR:${is-gnu},${is-clang}>>)
```

--------------------------------

### Compiler Detection

Source: https://github.com/amokhuginnsson/replxx/blob/master/CMakeLists.txt

Sets boolean variables to detect if the compiler is Clang, MSVC, or GNU, and a combined variable for Clang or GNU.

```cmake
set(is-clang $<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>)
set(is-msvc $<CXX_COMPILER_ID:MSVC>)
set(is-gnu $<CXX_COMPILER_ID:GNU>)
set(compiler-id-clang-or-gnu $<OR:${is-clang},${is-gnu}>)
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.