106 lines
3.6 KiB
Rust
106 lines
3.6 KiB
Rust
use std::borrow::Cow;
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use std::collections::btree_map::{BTreeMap, Entry};
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use std::str::Split;
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use clap::ArgMatches;
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use toml::Value;
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use libimagstore::store::EntryHeader;
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use libimagutil::key_value_split::IntoKeyValue;
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pub fn build_toml_header(matches: &ArgMatches, header: EntryHeader) -> EntryHeader {
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debug!("Building header from cli spec");
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if let Some(headerspecs) = matches.values_of("header") {
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let mut main = header.into();
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let kvs = headerspecs.into_iter()
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.filter_map(|hs| {
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debug!("- Processing: '{}'", hs);
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let kv = String::from(hs).into_kv();
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debug!("- got: '{:?}'", kv);
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kv
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});
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for tpl in kvs {
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let (key, value) = tpl.into();
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debug!("Splitting: {:?}", key);
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let mut split = key.split('.');
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let current = split.next();
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if current.is_some() {
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insert_key_into(String::from(current.unwrap()), &mut split, Cow::Owned(value), &mut main);
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}
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}
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debug!("Header = {:?}", main);
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EntryHeader::from(main)
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} else {
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debug!("Header = {:?}", header);
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header
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}
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}
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fn insert_key_into<'a>(current: String,
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rest_path: &mut Split<char>,
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value: Cow<'a, str>,
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map: &mut BTreeMap<String, Value>) {
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let next = rest_path.next();
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if next.is_none() {
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debug!("Inserting into {:?} = {:?}", current, value);
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map.insert(current, parse_value(value));
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} else {
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debug!("Inserting into {:?} ... = {:?}", current, value);
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match map.entry(current) {
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Entry::Occupied(ref mut e) => {
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match *e.get_mut() {
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Value::Table(ref mut t) => {
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insert_key_into(String::from(next.unwrap()), rest_path, value, t);
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},
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_ => unreachable!(),
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}
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},
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Entry::Vacant(v) => { v.insert(Value::Table( {
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let mut submap = BTreeMap::new();
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insert_key_into(String::from(next.unwrap()), rest_path, value, &mut submap);
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debug!("Inserting submap = {:?}", submap);
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submap }));
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}
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}
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}
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}
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fn parse_value(value: Cow<str>) -> Value {
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use std::str::FromStr;
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fn is_ary(v: &str) -> bool {
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v.starts_with('[') && v.ends_with(']') && v.len() >= 3
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}
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if value == "true" {
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debug!("Building Boolean out of: {:?}...", value);
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Value::Boolean(true)
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} else if value == "false" {
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debug!("Building Boolean out of: {:?}...", value);
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Value::Boolean(false)
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} else if is_ary(&value) {
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debug!("Building Array out of: {:?}...", value);
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let sub = &value[1..(value.len()-1)];
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Value::Array(sub.split(',').map(|x| parse_value(Cow::from(x))).collect())
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} else {
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FromStr::from_str(&value[..])
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.map(|i: i64| {
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debug!("Building Integer out of: {:?}...", value);
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Value::Integer(i)
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})
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.unwrap_or_else(|_| {
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FromStr::from_str(&value[..])
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.map(|f: f64| {
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debug!("Building Float out of: {:?}...", value);
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Value::Float(f)
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})
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.unwrap_or_else(|_| {
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debug!("Building String out of: {:?}...", value);
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Value::String(value.into_owned())
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})
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})
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}
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}
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