1 files changed, 217 insertions, 0 deletions
diff --git a/third_party/rust/nom/tests/ini_str.rs b/third_party/rust/nom/tests/ini_str.rs
new file mode 100644
index 0000000000..3702303527
--- /dev/null
+++ b/third_party/rust/nom/tests/ini_str.rs
@@ -0,0 +1,217 @@
+use nom::{
+  bytes::complete::{is_a, tag, take_till, take_while},
+  character::complete::{alphanumeric1 as alphanumeric, char, space0 as space},
+  combinator::opt,
+  multi::many0,
+  sequence::{delimited, pair, terminated, tuple},
+  IResult,
+};
+
+use std::collections::HashMap;
+
+fn is_line_ending_or_comment(chr: char) -> bool {
+  chr == ';' || chr == '\n'
+}
+
+fn not_line_ending(i: &str) -> IResult<&str, &str> {
+  take_while(|c| c != '\r' && c != '\n')(i)
+}
+
+fn space_or_line_ending(i: &str) -> IResult<&str, &str> {
+  is_a(" \r\n")(i)
+}
+
+fn category(i: &str) -> IResult<&str, &str> {
+  terminated(
+    delimited(char('['), take_while(|c| c != ']'), char(']')),
+    opt(is_a(" \r\n")),
+  )(i)
+}
+
+fn key_value(i: &str) -> IResult<&str, (&str, &str)> {
+  let (i, key) = alphanumeric(i)?;
+  let (i, _) = tuple((opt(space), tag("="), opt(space)))(i)?;
+  let (i, val) = take_till(is_line_ending_or_comment)(i)?;
+  let (i, _) = opt(space)(i)?;
+  let (i, _) = opt(pair(tag(";"), not_line_ending))(i)?;
+  let (i, _) = opt(space_or_line_ending)(i)?;
+
+  Ok((i, (key, val)))
+}
+
+fn keys_and_values_aggregator(i: &str) -> IResult<&str, Vec<(&str, &str)>> {
+  many0(key_value)(i)
+}
+
+fn keys_and_values(input: &str) -> IResult<&str, HashMap<&str, &str>> {
+  match keys_and_values_aggregator(input) {
+    Ok((i, tuple_vec)) => Ok((i, tuple_vec.into_iter().collect())),
+    Err(e) => Err(e),
+  }
+}
+
+fn category_and_keys(i: &str) -> IResult<&str, (&str, HashMap<&str, &str>)> {
+  pair(category, keys_and_values)(i)
+}
+
+fn categories_aggregator(i: &str) -> IResult<&str, Vec<(&str, HashMap<&str, &str>)>> {
+  many0(category_and_keys)(i)
+}
+
+fn categories(input: &str) -> IResult<&str, HashMap<&str, HashMap<&str, &str>>> {
+  match categories_aggregator(input) {
+    Ok((i, tuple_vec)) => Ok((i, tuple_vec.into_iter().collect())),
+    Err(e) => Err(e),
+  }
+}
+
+#[test]
+fn parse_category_test() {
+  let ini_file = "[category]
+
+parameter=value
+key = value2";
+
+  let ini_without_category = "parameter=value
+key = value2";
+
+  let res = category(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, o)) => println!("i: {} | o: {:?}", i, o),
+    _ => println!("error"),
+  }
+
+  assert_eq!(res, Ok((ini_without_category, "category")));
+}
+
+#[test]
+fn parse_key_value_test() {
+  let ini_file = "parameter=value
+key = value2";
+
+  let ini_without_key_value = "key = value2";
+
+  let res = key_value(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, (o1, o2))) => println!("i: {} | o: ({:?},{:?})", i, o1, o2),
+    _ => println!("error"),
+  }
+
+  assert_eq!(res, Ok((ini_without_key_value, ("parameter", "value"))));
+}
+
+#[test]
+fn parse_key_value_with_space_test() {
+  let ini_file = "parameter = value
+key = value2";
+
+  let ini_without_key_value = "key = value2";
+
+  let res = key_value(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, (o1, o2))) => println!("i: {} | o: ({:?},{:?})", i, o1, o2),
+    _ => println!("error"),
+  }
+
+  assert_eq!(res, Ok((ini_without_key_value, ("parameter", "value"))));
+}
+
+#[test]
+fn parse_key_value_with_comment_test() {
+  let ini_file = "parameter=value;abc
+key = value2";
+
+  let ini_without_key_value = "key = value2";
+
+  let res = key_value(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, (o1, o2))) => println!("i: {} | o: ({:?},{:?})", i, o1, o2),
+    _ => println!("error"),
+  }
+
+  assert_eq!(res, Ok((ini_without_key_value, ("parameter", "value"))));
+}
+
+#[test]
+fn parse_multiple_keys_and_values_test() {
+  let ini_file = "parameter=value;abc
+
+key = value2
+
+[category]";
+
+  let ini_without_key_value = "[category]";
+
+  let res = keys_and_values(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, ref o)) => println!("i: {} | o: {:?}", i, o),
+    _ => println!("error"),
+  }
+
+  let mut expected: HashMap<&str, &str> = HashMap::new();
+  expected.insert("parameter", "value");
+  expected.insert("key", "value2");
+  assert_eq!(res, Ok((ini_without_key_value, expected)));
+}
+
+#[test]
+fn parse_category_then_multiple_keys_and_values_test() {
+  //FIXME: there can be an empty line or a comment line after a category
+  let ini_file = "[abcd]
+parameter=value;abc
+
+key = value2
+
+[category]";
+
+  let ini_after_parser = "[category]";
+
+  let res = category_and_keys(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, ref o)) => println!("i: {} | o: {:?}", i, o),
+    _ => println!("error"),
+  }
+
+  let mut expected_h: HashMap<&str, &str> = HashMap::new();
+  expected_h.insert("parameter", "value");
+  expected_h.insert("key", "value2");
+  assert_eq!(res, Ok((ini_after_parser, ("abcd", expected_h))));
+}
+
+#[test]
+fn parse_multiple_categories_test() {
+  let ini_file = "[abcd]
+
+parameter=value;abc
+
+key = value2
+
+[category]
+parameter3=value3
+key4 = value4
+";
+
+  let res = categories(ini_file);
+  //println!("{:?}", res);
+  match res {
+    Ok((i, ref o)) => println!("i: {} | o: {:?}", i, o),
+    _ => println!("error"),
+  }
+
+  let mut expected_1: HashMap<&str, &str> = HashMap::new();
+  expected_1.insert("parameter", "value");
+  expected_1.insert("key", "value2");
+  let mut expected_2: HashMap<&str, &str> = HashMap::new();
+  expected_2.insert("parameter3", "value3");
+  expected_2.insert("key4", "value4");
+  let mut expected_h: HashMap<&str, HashMap<&str, &str>> = HashMap::new();
+  expected_h.insert("abcd", expected_1);
+  expected_h.insert("category", expected_2);
+  assert_eq!(res, Ok(("", expected_h)));
+}