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feat(cd): support ~ expansion to home directory #15

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Merged
Pawank06 merged 5 commits into from
Jan 9, 2026
Merged

feat(cd): support ~ expansion to home directory #15

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32e82ac
feature(~): handle ~ as home dir navigation
Pawank06 Jan 9, 2026
63e0822
fix(~): move everything else to else case
Pawank06 Jan 9, 2026
f1778b0
fix(~): expanding any path that start with ~
Pawank06 Jan 9, 2026
e834970
fix(~): improve error message
Pawank06 Jan 9, 2026
24adfa4
fix(cd): list cd in builtin
Pawank06 Jan 9, 2026
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35 changes: 26 additions & 9 deletions src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ fn main() {
}
let query = &parts[1];

let builtin = ["exit", "echo", "type", "pwd"];
let builtin = ["exit", "echo", "type", "pwd", "cd"];

if builtin.contains(query) {
println!("{} is a rshell builtin", query);
Expand Down Expand Up @@ -68,7 +68,7 @@ fn main() {
println!("{}: not found", query);
}
}
Err(e) => eprintln!("Couldn't read PATH environment variable: {}", e),
Err(e) => eprintln!("cd: Unable to read PATH environment variable: {}", e),
}
}
}
Expand All @@ -83,15 +83,32 @@ fn main() {

let args = &parts[1..];
let full_path = args.join(" ");

let path = Path::new(&full_path);
if !path.exists() {
println!("cd: {}: No such file or directory", full_path);
} else if !path.is_dir() {
println!("cd: {}: Not a directory", full_path);
let path_str = full_path.as_str();
if path_str == "~" || path_str.starts_with("~/") {
match env::var("HOME") {
Ok(val) => {
let expanded = if path_str == "~" {
val.clone()
} else {
path_str.replacen("~", &val, 1)
};

if let Err(e) = env::set_current_dir(&expanded) {
eprintln!("cd: {} {}", &expanded, e)
}
}
Err(e) => eprintln!("cd: Unable to read HOME environment variable: {}", e),
}
} else {
if let Err(e) = env::set_current_dir(&full_path) {
eprintln!("cd: {} {}", path.display(), e);
if !path.exists() {
println!("cd: {}: No such file or directory", full_path);
} else if !path.is_dir() {
println!("cd: {}: Not a directory", full_path);
} else {
if let Err(e) = env::set_current_dir(&full_path) {
eprintln!("cd: {} {}", path.display(), e);
}
}
}
}
Expand Down