pub fn first_json_payload(output: &str) -> Option<&str> {
let start = output.find('{')?;
let bytes = output.as_bytes();
let mut depth: i32 = 0;
let mut in_string = false;
let mut escaped = false;
for (idx, b) in bytes.iter().enumerate().skip(start) {
if in_string {
if escaped {
escaped = false;
continue;
}
match *b {
b'\\' => escaped = true,
b'"' => in_string = false,
_ => {}
}
continue;
}
match *b {
b'"' => in_string = true,
b'{' => depth += 1,
b'}' => {
depth -= 1;
if depth == 0 {
return output.get(start..=idx);
}
}
_ => {}
}
}
None
}
pub fn first_token(line: &str) -> Option<String> {
line.split_whitespace().next().map(ToOwned::to_owned)
}
pub fn parse_cargo_list(output: &str) -> Result<Vec<String>, ()> {
let mut pkgs = Vec::new();
for raw in output.lines() {
let line = raw.trim();
if line.is_empty() {
continue;
}
if line.starts_with("Polling registry ") {
continue;
}
let parts: Vec<&str> = line.split_whitespace().collect();
if parts.as_slice() == ["Package", "Installed", "Latest", "Needs", "update"] {
continue;
}
if parts.len() == 4 && parts[1].starts_with('v') && parts[2].starts_with('v') {
match parts[3] {
"Yes" => {
pkgs.push(parts[0].to_string());
continue;
}
"No" => continue,
_ => {}
}
}
return Err(());
}
Ok(pkgs)
}
#[derive(Debug, Default, PartialEq, Eq)]
pub struct ScoopStatusOutput {
pub updatable_items: Vec<String>,
pub metadata_outdated: bool,
}
#[derive(Clone, Copy)]
struct ScoopStatusColumns {
installed_start: usize,
latest_start: usize,
latest_end: usize,
}
impl ScoopStatusColumns {
fn from_header(line: &str) -> Option<Self> {
let installed_start = line.find("Installed Version")?;
let latest_start = line.find("Latest Version")?;
if !line[..installed_start].contains("Name") {
return None;
}
let latest_end = line
.find("Missing Dependencies")
.or_else(|| line.find("Info"))
.unwrap_or(line.len());
Some(Self {
installed_start,
latest_start,
latest_end,
})
}
fn outdated_name(self, line: &str) -> Option<String> {
let name = slice_column(line, 0, self.installed_start).trim();
let latest = slice_column(line, self.latest_start, self.latest_end).trim();
(!name.is_empty() && !latest.is_empty()).then(|| name.to_string())
}
}
fn slice_column(line: &str, start: usize, end: usize) -> &str {
let len = line.len();
if start >= len || start >= end {
return "";
}
let end = end.min(len);
line.get(start..end).unwrap_or("")
}
fn is_scoop_status_separator(line: &str) -> bool {
line.chars().all(|ch| ch == '-' || ch == ' ' || ch == '\t')
}
fn is_scoop_status_noise(line: &str) -> bool {
matches!(
line,
"Everything is ok!" | "Scoop is up to date." | "Scoop was updated successfully!"
)
}
pub fn parse_scoop_status_output(output: &str) -> ScoopStatusOutput {
let cleaned = strip_ansi_control_sequences(output);
let mut parsed = ScoopStatusOutput::default();
let mut columns = None;
for raw in cleaned.lines() {
let line = raw.trim_end();
let trimmed = line.trim();
if trimmed.is_empty() || is_scoop_status_noise(trimmed) {
continue;
}
if trimmed.starts_with("WARN") {
if trimmed.contains("Scoop out of date") || trimmed.contains("bucket(s) out of date") {
parsed.metadata_outdated = true;
}
continue;
}
if let Some(header) = ScoopStatusColumns::from_header(line) {
columns = Some(header);
continue;
}
if is_scoop_status_separator(trimmed) {
continue;
}
if let Some(columns) = columns {
if let Some(name) = columns.outdated_name(line)
&& !parsed.updatable_items.iter().any(|item| item == &name)
{
parsed.updatable_items.push(name);
}
continue;
}
if let Some(name) = first_token(trimmed)
&& !matches!(name.as_str(), "Name" | "----")
&& !parsed.updatable_items.iter().any(|item| item == &name)
{
parsed.updatable_items.push(name);
}
}
parsed
}
pub fn parse_fnm_version_token(line: &str) -> Option<String> {
let trimmed = line.trim().trim_start_matches('*').trim();
let token = trimmed.split_whitespace().next()?;
if token.starts_with('v') {
return Some(token.to_string());
}
None
}
pub fn extract_marker_count(output: &str, marker: &str) -> Option<usize> {
for line in output.lines() {
let trimmed = line.trim();
if let Some(raw) = trimmed.strip_prefix(marker)
&& let Ok(value) = raw.trim().parse::<usize>()
{
return Some(value);
}
}
None
}
pub fn strip_ansi_control_sequences(text: &str) -> String {
let mut out = String::with_capacity(text.len());
let mut chars = text.chars().peekable();
while let Some(ch) = chars.next() {
if ch == '\u{1b}' {
if chars.peek().is_some_and(|next| *next == '[') {
let _ = chars.next();
for c in chars.by_ref() {
if c.is_ascii_alphabetic() {
break;
}
}
}
continue;
}
out.push(ch);
}
out
}
#[cfg(test)]
mod tests {
use super::{ScoopStatusOutput, parse_scoop_status_output};
#[test]
fn parses_scoop_status_table_outdated_items() {
let output = "\
Scoop is up to date.\n\
\n\
Name Installed Version Latest Version Missing Dependencies Info\n\
---- ----------------- -------------- -------------------- ----\n\
7zip 24.09 25.01\n\
git 2.45.2.windows.1 2.46.0.windows.1\n\
dependency 1.0 innounp\n";
assert_eq!(
parse_scoop_status_output(output),
ScoopStatusOutput {
updatable_items: vec!["7zip".to_string(), "git".to_string()],
metadata_outdated: false,
}
);
}
#[test]
fn detects_scoop_metadata_outdated_warning() {
let output =
"WARN Scoop bucket(s) out of date. Run 'scoop update' to get the latest changes.\n";
assert_eq!(
parse_scoop_status_output(output),
ScoopStatusOutput {
updatable_items: Vec::new(),
metadata_outdated: true,
}
);
}
#[test]
fn supports_legacy_name_only_scoop_status_output() {
let output = "7zip\ngit\n";
assert_eq!(
parse_scoop_status_output(output),
ScoopStatusOutput {
updatable_items: vec!["7zip".to_string(), "git".to_string()],
metadata_outdated: false,
}
);
}
}