Module platform 

Platform-specific utilities and cross-platform compatibility helpers

This module provides abstractions over platform differences to ensure AGPM works consistently across Windows, macOS, and Linux. It handles differences in:

• Path separators and conventions
• Home directory resolution
• Command execution and shell interfaces
• File system behavior and limitations
• Environment variable handling

Cross-Platform Design

AGPM is designed to provide identical functionality across all supported platforms while respecting platform conventions and limitations. This module encapsulates the platform-specific logic to achieve this goal.

Examples

use agpm_cli::utils::platform::{get_home_dir, resolve_path, is_windows};

// Get platform-appropriate home directory
let home = get_home_dir()?;
println!("Home directory: {}", home.display());

// Resolve paths with tilde expansion and env vars
let config_path = resolve_path("~/.agpm/config.toml")?;

// Handle platform differences
if is_windows() {
    println!("Running on Windows");
} else {
    println!("Running on Unix-like system");
}

Platform Support Matrix

Feature	Windows	macOS	Linux
Long paths (>260 chars)	✅	✅	✅
Case sensitivity	No	Configurable	Yes
Tilde expansion	✅	✅	✅
Environment variables	%VAR%	$VAR	$VAR
Shell commands	cmd.exe	sh	sh
Git command	git.exe	git	git

Security Considerations

• Path traversal prevention in safe_join
• Input validation in validate_path_chars
• Safe environment variable expansion
• Proper handling of special Windows filenames

Functions

command_exists

Checks if a command is available in the system PATH.

compute_relative_install_path

Computes the relative install path by removing redundant directory prefixes.

get_cache_dir

Returns the platform-specific cache directory for AGPM.

get_data_dir

Returns the platform-specific data directory for AGPM.

get_git_command

Returns the appropriate Git command name for the current platform.

get_home_dir

Gets the home directory path for the current user.

get_shell_command

Returns the appropriate shell command and flag for the current platform.

is_windows

Checks if the current platform is Windows.

normalize_path_for_storage

Normalizes a path for cross-platform storage by converting all separators to forward slashes.

normalize_path_separator

Converts a path to use the correct separator for the current platform.

path_to_os_str

Returns a path as an OsStr for use in command arguments.

path_to_string

Safely converts a path to a string, handling non-UTF-8 paths gracefully.

paths_equal

Compares two paths for equality, respecting platform case sensitivity rules.

resolve_path

Resolves a path with tilde expansion and environment variable substitution.

safe_canonicalize

Canonicalizes a path with proper cross-platform handling.

safe_join

Safely joins a base path with a relative path, preventing directory traversal.

validate_path_chars

Validates that a path contains only characters valid for the current platform.

windows_long_path

No-op implementation of windows_long_path for non-Windows platforms.