### Loading APM Modules at Runtime in Slash

Source: https://context7.com/spaceinventor/slash/llms.txt

This C code provides an example of how to dynamically load Slash Application Modules (APMs) at runtime using `dlopen`. The `load_apm_module` function takes a module path, loads the shared library, and then initializes the APM commands using `slash_init_apm`. The `main` function shows how to create a Slash instance, load multiple APMs, and then enter the command loop.

```c
#include <slash/slash.h>
#include <dlfcn.h>
#include <stdio.h>

int load_apm_module(const char *module_path)
{
    void *handle;

    /* Load the shared library */
    handle = dlopen(module_path, RTLD_NOW | RTLD_GLOBAL);
    if (!handle) {
        fprintf(stderr, "Failed to load APM: %s\n", dlerror());
        return -1;
    }

    /* Initialize APM commands */
    slash_init_apm(handle);

    printf("Loaded APM: %s\n", module_path);
    return 0;
}

/* Example usage */
int main(void)
{
    struct slash *slash = slash_create(128, 4096);

    /* Load APM modules */
    load_apm_module("./my_apm.so");
    load_apm_module("./another_apm.so");

    /* APM commands are now available */
    slash_loop(slash);
    slash_destroy(slash);

    return 0;
}

```

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

### Defining Commands in Slash Application Modules (APMs)

Source: https://context7.com/spaceinventor/slash/llms.txt

This C code demonstrates how to define commands within a shared library (APM) for dynamic loading in Slash. It uses `SLASH_SECTION_INIT` to name the APM and `slash_sec_command` to register new commands specific to that module. The example shows two simple commands, `apm_test` and `apm_info`.

```c
/* my_apm.c - Compile as shared library */
#include <slash/slash.h>
#include <stdio.h>

/* Initialize APM section with unique name */
SLASH_SECTION_INIT(my_apm)

/* Define commands using section-specific macro */
static int cmd_apm_test(struct slash *slash)
{
    printf("APM command executed\n");
    return SLASH_SUCCESS;
}

/* Use slash_sec_command with section name */
slash_sec_command(my_apm, apm_test, cmd_apm_test, NULL,
                  "Command from APM module");

static int cmd_apm_info(struct slash *slash)
{
    printf("APM Version: 1.0\n");
    return SLASH_SUCCESS;
}

slash_sec_command(my_apm, apm_info, cmd_apm_info, NULL,
                  "Show APM information");

/* Compile with: gcc -shared -fPIC -o my_apm.so my_apm.c -lslash */

```

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

### Initialize Slash Section for APM

Source: https://github.com/spaceinventor/slash/blob/master/README.md

This macro initializes the necessary start and stop variables for a separate command section within an APM. It also declares a function to retrieve pointers to these start and stop commands, which are then used to add the APM's commands to the main slash command list.

```c
#define SLASH_SECTION_INIT(name)

```

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

### Initialize Slash Context C

Source: https://context7.com/spaceinventor/slash/llms.txt

Creates a new Slash context, enabling line editing and command history. Requires including the 'slash/slash.h' header. Returns a pointer to the Slash context or NULL on failure. Clean up with 'slash_destroy'.

```c
#include <slash/slash.h>
#include <stdio.h>
#include <stdlib.h>

#define LINE_SIZE    128
#define HISTORY_SIZE 4096

int main(int argc, char **argv)
{
    struct slash *slash;

    /* Create slash context with line buffer and history */
    slash = slash_create(LINE_SIZE, HISTORY_SIZE);
    if (!slash) {
        fprintf(stderr, "Failed to initialize slash\n");
        return EXIT_FAILURE;
    }

    /* Start the interactive command loop */
    slash_loop(slash);

    /* Clean up resources */
    slash_destroy(slash);

    return EXIT_SUCCESS;
}
```

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

### Iterating Through Registered Commands in C

Source: https://context7.com/spaceinventor/slash/llms.txt

Demonstrates how to iterate through all registered commands in the Slash framework at runtime using `slash_list_iterator` and `slash_list_iterate`. It prints the name and description of each available command. It also shows how to find a specific command by name using `slash_list_find_name`.

```c
#include <slash/slash.h>
#include <stdio.h>

static int cmd_list_commands(struct slash *slash)
{
    struct slash_command *cmd;
    slash_list_iterator iter = {};
    int count = 0;

    printf("Available commands:
");
    printf("% -20s %s
", "Command", "Description");
    printf("% -20s %s
", "-------", "-----------");

    /* Iterate through all registered commands */
    while ((cmd = slash_list_iterate(&iter)) != NULL) {
        printf("% -20s %s
", cmd->name,
               cmd->help ? cmd->help : "(no description)");
        count++;
    }

    printf("\nTotal: %d commands
", count);
    return SLASH_SUCCESS;
}

/* Find specific command */
void find_and_execute(struct slash *slash, const char *cmd_name)
{
    struct slash_command *cmd = slash_list_find_name(cmd_name);
    if (cmd && cmd->func) {
        printf("Found command: %s
", cmd->name);
        /* Can call cmd->func(slash) to execute */
    }
}

slash_command(list, cmd_list_commands, NULL,
              "List all available commands");

```

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

### Parse Command Arguments C

Source: https://context7.com/spaceinventor/slash/llms.txt

Demonstrates parsing command-line arguments and options within a Slash command. Uses 'slash_getopt' for option parsing, similar to standard C getopt. It handles flags like '-v' for verbose mode and options with arguments like '-c count'.

```c
#include <slash/slash.h>
#include <stdio.h>

static int cmd_args(struct slash *slash)
{
    int verbose = 0;
    int count = 1;
    int opt;

    /* Parse options using slash_getopt */
    while ((opt = slash_getopt(slash, "vc:")) != -1) {
        switch (opt) {
        case 'v':
            verbose = 1;
            break;
        case 'c':
            count = atoi(slash->optarg);
            break;
        default:
            return SLASH_EUSAGE;
        }
    }

    /* Remaining arguments start at slash->argv[slash->optind] */
    if (verbose) {
        printf("Verbose mode enabled\n");
    }

    printf("Processing %d items\n", count);

    /* Print all remaining arguments */
    for (int i = slash->optind; i < slash->argc; i++) {
        printf("Argument %d: '%s'\n", i, slash->argv[i]);
    }

    return SLASH_SUCCESS;
}

slash_command(args, cmd_args, "[-v] [-c count] [arg ... ]",
              "Example of argument parsing");
```

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

### Implementing Custom Command Hooks in Slash

Source: https://context7.com/spaceinventor/slash/llms.txt

This C code illustrates how to implement various hooks in Slash to intercept and modify command execution. It includes pre-execution logging, post-execution reporting, command line processing (like alias expansion), and file execution hooks. These hooks allow for advanced control over the command interpreter's behavior.

```c
#include <slash/slash.h>
#include <stdio.h>
#include <time.h>

/* Hook called before command execution */
void slash_on_execute_hook(const char *line)
{
    time_t now = time(NULL);
    printf("[%s] Executing: %s\n", ctime(&now), line);
}

/* Hook called after command execution */
void slash_on_execute_post_hook(const char *line, struct slash_command *command)
{
    printf("Completed: %s (command: %s)\n", line, command->name);
}

/* Process and modify command line before execution */
char *slash_process_cmd_line_hook(const char *line)
{
    /* Example: expand aliases */
    if (strncmp(line, "ll", 2) == 0) {
        return strdup("list long");  /* Will be freed automatically */
    }
    return NULL;  /* Use original line */
}

/* Hook for file execution */
void slash_on_run_pre_hook(const char *filename, void **ctx_for_post)
{
    printf("Running script: %s\n", filename);
    *ctx_for_post = strdup(filename);  /* Pass context to post hook */
}

void slash_on_run_post_hook(const char *filename, void *ctx)
{
    printf("Finished script: %s\n", (char *)ctx);
    free(ctx);
}

```

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

### Execute Commands Programmatically C

Source: https://context7.com/spaceinventor/slash/llms.txt

Shows how to execute Slash commands programmatically from within an application. The 'slash_execute' function takes the Slash context and a command string as input. It returns a status code indicating success or failure, allowing for handling of various error conditions.

```c
#include <slash/slash.h>
#include <stdio.h>

void run_startup_commands(struct slash *slash)
{
    int ret;

    /* Execute a command string */
    ret = slash_execute(slash, "help");
    if (ret != SLASH_SUCCESS) {
        printf("Command failed with code: %d\n", ret);
    }

    /* Execute command with arguments */
    ret = slash_execute(slash, "test argument1 argument2");

    /* Handle different return codes */
    switch (ret) {
    case SLASH_SUCCESS:
        printf("Command succeeded\n");
        break;
    case SLASH_EUSAGE:
        printf("Usage error\n");
        break;
    case SLASH_EINVAL:
        printf("Invalid argument\n");
        break;
    case SLASH_ENOENT:
        printf("Command not found\n");
        break;
    }
}
```

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

### Working with Command History in Slash

Source: https://context7.com/spaceinventor/slash/llms.txt

This C code demonstrates how to programmatically manage and access command history within the Slash library. It includes a `cmd_show_history` function to iterate through and display the history, and an `add_to_history` function to manually add commands to the history. A Slash command `show_history` is also registered to make this functionality accessible.

```c
#include <slash/slash.h>
#include <stdio.h>

static int cmd_show_history(struct slash *slash)
{
    char *p = slash->history_head;
    int line_num = 1;

    /* Iterate through history */
    while (p != slash->history_tail) {
        if (*p) {
            printf("%4d  ", line_num++);
        }
        slash_putchar(slash, *p ? *p : '\n');
        p = slash_history_increment(slash, p);
    }

    return SLASH_SUCCESS;
}

void add_to_history(struct slash *slash, const char *command)
{
    /* Manually add entry to history */
    slash_history_add(slash, (char *)command);
}

slash_command(show_history, cmd_show_history, NULL,
              "Display command history");

```

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

### Define Simple Commands C

Source: https://context7.com/spaceinventor/slash/llms.txt

Defines simple commands that are registered with the Slash command registry using macros. Commands are C functions that return an integer status code. The 'slash_command' macro registers a command with its name, function, argument description, and help text.

```c
#include <slash/slash.h>
#include <stdio.h>

static int cmd_hello(struct slash *slash)
{
    printf("Hello, World!\n");
    return SLASH_SUCCESS;
}

/* Register command: name, function, args description, help text */
slash_command(hello, cmd_hello, NULL,
              "Print a greeting message");

static int cmd_test(struct slash *slash)
{
    if (slash->argc < 2)
        return SLASH_EUSAGE;  /* Show usage message */

    printf("Test command received: %s\n", slash->argv[1]);
    return SLASH_SUCCESS;
}

slash_command(test, cmd_test, "<arg>",
              "A simple test command\n\n"
              "Requires a single argument which must be present");
```

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

### Custom Prompt Implementation in C

Source: https://context7.com/spaceinventor/slash/llms.txt

Overrides the default prompt in the Slash framework with custom formatting, including the current working directory and a custom prompt character. It utilizes ANSI escape codes for coloring and displays the prompt in cyan with a gray '%' character. Dependencies include `<slash/slash.h>`, `<stdio.h>`, and `<unistd.h>`.

```c
#include <slash/slash.h>
#include <stdio.h>
#include <unistd.h>

/* Override weak symbol to provide custom prompt */
int slash_prompt(struct slash *slash)
{
    char cwd[256];
    const char *prompt_color = "\033[96m";  /* Cyan */
    const char *reset_color = "\033[0m";
    const char *prompt_char = "\033[90m%\033[0m ";  /* Gray % */

    /* Get current directory */
    if (getcwd(cwd, sizeof(cwd)) != NULL) {
        int len = slash_printf(slash, "%s%s %s",
                              prompt_color, cwd, prompt_char);
        return len;  /* Return visible character count */
    }

    int len = slash_printf(slash, "%sslash %s",
                          prompt_color, prompt_char);
    return len;
}

```

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

### Reading Input Lines with Slash

Source: https://context7.com/spaceinventor/slash/llms.txt

This C code snippet demonstrates how to read and process user input line by line using the slash_readline function. It includes support for terminal configuration, line editing, and command history. The loop continues until the user enters 'quit'.

```c
#include <slash/slash.h>
#include <stdio.h>
#include <string.h>

void interactive_prompt(struct slash *slash)
{
    char *line;

    /* Configure terminal for raw mode */
    slash_acquire_std_in_out(slash);

    /* Read a line with history and editing */
    while ((line = slash_readline(slash)) != NULL) {
        /* Check for empty line */
        if (strlen(line) == 0) {
            continue;
        }

        /* Process the line */
        printf("You entered: %s\n", line);

        /* Line is automatically added to history */

        /* Exit on "quit" */
        if (strcmp(line, "quit") == 0) {
            break;
        }
    }

    /* Restore terminal to normal mode */
    slash_release_std_in_out(slash);
}

```

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

### Create Subcommands C

Source: https://context7.com/spaceinventor/slash/llms.txt

Organizes commands into a hierarchical structure using subcommands. The 'slash_command_sub' macro registers a subcommand under a parent group. This allows for command grouping like 'network status' or 'network reset'.

```c
#include <slash/slash.h>
#include <stdio.h>

static int cmd_network_status(struct slash *slash)
{
    printf("Network Status: Connected\n");
    return SLASH_SUCCESS;
}

/* Create subcommand: group, name, function, args, help */
slash_command_sub(network, status, cmd_network_status, NULL,
                  "Show network connection status");

static int cmd_network_reset(struct slash *slash)
{
    printf("Resetting network interface...\n");
    return SLASH_SUCCESS;
}

slash_command_sub(network, reset, cmd_network_reset, NULL,
                  "Reset network interface");

/* Usage: "network status" or "network reset" */
```

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

### Define Standard Slash Command

Source: https://github.com/spaceinventor/slash/blob/master/README.md

This macro defines a standard slash command. The created command struct is placed in the default 'slash' ELF section, making it compatible with existing applications like csh without requiring changes to command definitions.

```c
slash_command(name, func, args, help)

```

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

### Interruptible Wait Operations in C

Source: https://context7.com/spaceinventor/slash/llms.txt

Implements long-running operations within the Slash framework that can be interrupted by user input (pressing Enter). It uses `slash_wait_interruptible` to pause for a specified duration while monitoring for user interruptions or signals. Returns `SLASH_SUCCESS` on completion or cancellation, and `SLASH_EBREAK` if a signal is received.

```c
#include <slash/slash.h>
#include <stdio.h>

static int cmd_long_operation(struct slash *slash)
{
    int iterations = 10;

    printf("Starting long operation (press Enter to cancel)...
");

    for (int i = 0; i < iterations; i++) {
        printf("Progress: %d/%d
", i + 1, iterations);

        /* Wait 1 second, but allow user to interrupt */
        int ret = slash_wait_interruptible(slash, 1000);
        if (ret == -EINTR) {
            printf("Operation cancelled by user
");
            return SLASH_SUCCESS;
        }

        /* Check for signal */
        if (slash->signal) {
            printf("Received signal, aborting
");
            return SLASH_EBREAK;
        }
    }

    printf("Operation completed
");
    return SLASH_SUCCESS;
}

slash_command(long_op, cmd_long_operation, NULL,
              "Demonstrate interruptible operation");

```

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

### Define Slash Command in APM Section

Source: https://github.com/spaceinventor/slash/blob/master/README.md

This macro defines a slash command specifically for an APM, allowing it to be placed in a unique, APM-defined ELF section. This is crucial for APMs to avoid section name collisions with the main application and ensures proper integration into the command list.

```c
slash_sec_command(section, name, func, args, help)

```

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