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use std::path::PathBuf;
/// Expand a path string to an absolute PathBuf
/// Handles ~, ./, .., relative and absolute paths
pub fn expand_path(path_str: &str, current_cwd: Option<&PathBuf>) -> Option<PathBuf> {
let expanded = if path_str.starts_with("~/") || path_str == "~" {
let home_dir = std::env::var("HOME").ok()?;
if path_str == "~" {
PathBuf::from(home_dir)
} else {
PathBuf::from(home_dir).join(&path_str[2..])
}
} else if path_str.starts_with('/') {
PathBuf::from(path_str)
} else {
let base = current_cwd?;
base.join(path_str)
};
let mut normalized = PathBuf::new();
for component in expanded.components() {
match component {
std::path::Component::ParentDir => {
normalized.pop();
},
std::path::Component::CurDir => {},
_ => {
normalized.push(component);
},
}
}
Some(normalized)
}
/// Format a path for display in the prompt
/// Example: /home/user/some/long/path -> ~/s/l/path
pub fn format_cwd(cwd: &PathBuf) -> String {
let path_str = cwd.to_string_lossy().to_string();
let home_dir = std::env::var("HOME").unwrap_or_default();
let path_str = if !home_dir.is_empty() && path_str.starts_with(&home_dir) {
path_str.replacen(&home_dir, "~", 1)
} else {
path_str
};
let parts: Vec<&str> = path_str.split('/').collect();
if parts.len() <= 1 {
return path_str;
}
let mut formatted_parts = Vec::new();
for (i, part) in parts.iter().enumerate() {
if i == parts.len() - 1 {
formatted_parts.push(part.to_string());
} else if part.is_empty() {
formatted_parts.push(String::new());
} else {
formatted_parts.push(part.chars().next().unwrap_or_default().to_string());
}
}
formatted_parts.join("/")
}
/// Alias for expand_path for backwards compatibility
pub fn resolve_path(current_cwd: Option<&PathBuf>, path_str: &str) -> Option<PathBuf> {
expand_path(path_str, current_cwd)
}
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