1 files changed, 207 insertions, 0 deletions
diff --git a/third_party/rust/nom/tests/ini.rs b/third_party/rust/nom/tests/ini.rs
new file mode 100644
index 0000000000..e556f44a3c
--- /dev/null
+++ b/third_party/rust/nom/tests/ini.rs
@@ -0,0 +1,207 @@
+use nom::{
+  bytes::complete::take_while,
+  character::complete::{
+    alphanumeric1 as alphanumeric, char, multispace0 as multispace, space0 as space,
+  },
+  combinator::{map, map_res, opt},
+  multi::many0,
+  sequence::{delimited, pair, separated_pair, terminated, tuple},
+  IResult,
+};
+
+use std::collections::HashMap;
+use std::str;
+
+fn category(i: &[u8]) -> IResult<&[u8], &str> {
+  map_res(
+    delimited(char('['), take_while(|c| c != b']'), char(']')),
+    str::from_utf8,
+  )(i)
+}
+
+fn key_value(i: &[u8]) -> IResult<&[u8], (&str, &str)> {
+  let (i, key) = map_res(alphanumeric, str::from_utf8)(i)?;
+  let (i, _) = tuple((opt(space), char('='), opt(space)))(i)?;
+  let (i, val) = map_res(take_while(|c| c != b'\n' && c != b';'), str::from_utf8)(i)?;
+  let (i, _) = opt(pair(char(';'), take_while(|c| c != b'\n')))(i)?;
+  Ok((i, (key, val)))
+}
+
+fn keys_and_values(i: &[u8]) -> IResult<&[u8], HashMap<&str, &str>> {
+  map(many0(terminated(key_value, opt(multispace))), |vec| {
+    vec.into_iter().collect()
+  })(i)
+}
+
+fn category_and_keys(i: &[u8]) -> IResult<&[u8], (&str, HashMap<&str, &str>)> {
+  let (i, category) = terminated(category, opt(multispace))(i)?;
+  let (i, keys) = keys_and_values(i)?;
+  Ok((i, (category, keys)))
+}
+
+fn categories(i: &[u8]) -> IResult<&[u8], HashMap<&str, HashMap<&str, &str>>> {
+  map(
+    many0(separated_pair(
+      category,
+      opt(multispace),
+      map(
+        many0(terminated(key_value, opt(multispace))),
+        |vec: Vec<_>| vec.into_iter().collect(),
+      ),
+    )),
+    |vec: Vec<_>| vec.into_iter().collect(),
+  )(i)
+}
+
+#[test]
+fn parse_category_test() {
+  let ini_file = &b"[category]
+
+parameter=value
+key = value2"[..];
+
+  let ini_without_category = &b"\n\nparameter=value
+key = value2"[..];
+
+  let res = category(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, o)) => println!("i: {:?} | o: {:?}", str::from_utf8(i), o),
+    _ => println!("error"),
+  }
+
+  assert_eq!(res, Ok((ini_without_category, "category")));
+}
+
+#[test]
+fn parse_key_value_test() {
+  let ini_file = &b"parameter=value
+key = value2"[..];
+
+  let ini_without_key_value = &b"\nkey = value2"[..];
+
+  let res = key_value(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, (o1, o2))) => println!("i: {:?} | o: ({:?},{:?})", str::from_utf8(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 = &b"parameter = value
+key = value2"[..];
+
+  let ini_without_key_value = &b"\nkey = value2"[..];
+
+  let res = key_value(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, (o1, o2))) => println!("i: {:?} | o: ({:?},{:?})", str::from_utf8(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 = &b"parameter=value;abc
+key = value2"[..];
+
+  let ini_without_key_value = &b"\nkey = value2"[..];
+
+  let res = key_value(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, (o1, o2))) => println!("i: {:?} | o: ({:?},{:?})", str::from_utf8(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 = &b"parameter=value;abc
+
+key = value2
+
+[category]"[..];
+
+  let ini_without_key_value = &b"[category]"[..];
+
+  let res = keys_and_values(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, ref o)) => println!("i: {:?} | o: {:?}", str::from_utf8(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 = &b"[abcd]
+parameter=value;abc
+
+key = value2
+
+[category]"[..];
+
+  let ini_after_parser = &b"[category]"[..];
+
+  let res = category_and_keys(ini_file);
+  println!("{:?}", res);
+  match res {
+    Ok((i, ref o)) => println!("i: {:?} | o: {:?}", str::from_utf8(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 = &b"[abcd]
+
+parameter=value;abc
+
+key = value2
+
+[category]
+parameter3=value3
+key4 = value4
+"[..];
+
+  let ini_after_parser = &b""[..];
+
+  let res = categories(ini_file);
+  //println!("{:?}", res);
+  match res {
+    Ok((i, ref o)) => println!("i: {:?} | o: {:?}", str::from_utf8(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((ini_after_parser, expected_h)));
+}