Replace periods with underscores in Rust model names (#21480)

Fix issue where period-delimited model names (e.g. microsoft.graph.fido2AuthenticationMethod)
were being converted to unwieldy names with "Period" substitutions. Now periods are replaced
with underscores like hyphens, resulting in cleaner and more idiomatic Rust identifiers.

Fixes #15254

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractRustCodegen.java

@@ -183,8 +183,8 @@ public abstract class AbstractRustCodegen extends DefaultCodegen implements Code
                 throw new IllegalArgumentException("Unknown CasingType");
         }
 
-        // Replace hyphens with underscores
-        name = name.replaceAll("-", "_");
+        // Replace hyphens and periods with underscores
+        name = name.replaceAll("[\\.\\-]", "_");
 
         // Apply special character escapes, e.g. "@type" => "At_type"
         // Remove the trailing underscore if necessary

modules/openapi-generator/src/test/java/org/openapitools/codegen/rust/AbstractRustCodegenTest.java

@@ -36,6 +36,10 @@ public class AbstractRustCodegenTest {
         // Hyphens should be replaced (https://github.com/OpenAPITools/openapi-generator/commit/4cb7f1d6135aa3a42ff38cf89771105c40e7e5a9)
         Assert.assertEquals(sanitizeSnakeCase.apply("pet-name"), "pet_name");
 
+        // Periods should be replaced with underscores (https://github.com/OpenAPITools/openapi-generator/issues/15254)
+        Assert.assertEquals(sanitizeSnakeCase.apply("microsoft.graph.fido2AuthenticationMethod"), "microsoft_graph_fido2_authentication_method");
+        Assert.assertEquals(sanitizeCamelCase.apply("microsoft.graph.user"), "MicrosoftGraphUser");
+
         // Special character mappings are applied
         Assert.assertEquals(sanitizeSnakeCase.apply("@type"), "at_type");
         Assert.assertEquals(sanitizeCamelCase.apply("@type"), "AtType");

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/.openapi-generator/FILES

@@ -17,7 +17,7 @@ docs/Category.md
 docs/ClassModel.md
 docs/Client.md
 docs/Dog.md
-docs/DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket.md
+docs/DollarSpecialLeftSquareBracketModelNameRightSquareBracket.md
 docs/EnumArrays.md
 docs/EnumArraysArrayArrayEnumInnerInner.md
 docs/EnumArraysArrayEnumInner.md

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/README.md

@@ -198,7 +198,7 @@ Method | HTTP request | Description
  - [ClassModel](docs/ClassModel.md)
  - [Client](docs/Client.md)
  - [Dog](docs/Dog.md)
- - [DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket](docs/DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket.md)
+ - [DollarSpecialLeftSquareBracketModelNameRightSquareBracket](docs/DollarSpecialLeftSquareBracketModelNameRightSquareBracket.md)
  - [EnumArrays](docs/EnumArrays.md)
  - [EnumArraysArrayArrayEnumInnerInner](docs/EnumArraysArrayArrayEnumInnerInner.md)
  - [EnumArraysArrayEnumInner](docs/EnumArraysArrayEnumInner.md)

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/docs/DollarSpecialLeftSquareBracketModelNameRightSquareBracket.md

@@ -0,0 +1,10 @@
+# DollarSpecialLeftSquareBracketModelNameRightSquareBracket
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**dollar_special_left_square_bracket_property_name_right_square_bracket** | **i64** |  | [optional] [default to None]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/src/models.rs

@@ -2509,33 +2509,33 @@ impl Dog {
 #[derive(Debug, Clone, PartialEq, serde::Serialize, serde::Deserialize, validator::Validate)]
 #[cfg_attr(feature = "conversion", derive(frunk::LabelledGeneric))]
 #[serde(rename = "$special[model.name]")]
-pub struct DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
+pub struct DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
     #[serde(rename = "$special[property.name]")]
     #[serde(skip_serializing_if="Option::is_none")]
-    pub dollar_special_left_square_bracket_property_period_name_right_square_bracket: Option<i64>,
+    pub dollar_special_left_square_bracket_property_name_right_square_bracket: Option<i64>,
 
 }
 
 
-impl DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
+impl DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
     #[allow(clippy::new_without_default)]
-    pub fn new() -> DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
-        DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
-            dollar_special_left_square_bracket_property_period_name_right_square_bracket: None,
+    pub fn new() -> DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
+        DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
+            dollar_special_left_square_bracket_property_name_right_square_bracket: None,
         }
     }
 }
 
-/// Converts the DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket value to the Query Parameters representation (style=form, explode=false)
+/// Converts the DollarSpecialLeftSquareBracketModelNameRightSquareBracket value to the Query Parameters representation (style=form, explode=false)
 /// specified in https://swagger.io/docs/specification/serialization/
 /// Should be implemented in a serde serializer
-impl std::string::ToString for DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
+impl std::string::ToString for DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
     fn to_string(&self) -> String {
         let params: Vec<Option<String>> = vec![
-            self.dollar_special_left_square_bracket_property_period_name_right_square_bracket.as_ref().map(|dollar_special_left_square_bracket_property_period_name_right_square_bracket| {
+            self.dollar_special_left_square_bracket_property_name_right_square_bracket.as_ref().map(|dollar_special_left_square_bracket_property_name_right_square_bracket| {
                 [
                     "$special[property.name]".to_string(),
-                    dollar_special_left_square_bracket_property_period_name_right_square_bracket.to_string(),
+                    dollar_special_left_square_bracket_property_name_right_square_bracket.to_string(),
                 ].join(",")
             }),
         ];
@@ -2544,10 +2544,10 @@ impl std::string::ToString for DollarSpecialLeftSquareBracketModelPeriodNameRigh
     }
 }
 
-/// Converts Query Parameters representation (style=form, explode=false) to a DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket value
+/// Converts Query Parameters representation (style=form, explode=false) to a DollarSpecialLeftSquareBracketModelNameRightSquareBracket value
 /// as specified in https://swagger.io/docs/specification/serialization/
 /// Should be implemented in a serde deserializer
-impl std::str::FromStr for DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
+impl std::str::FromStr for DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
     type Err = String;
 
     fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
@@ -2555,7 +2555,7 @@ impl std::str::FromStr for DollarSpecialLeftSquareBracketModelPeriodNameRightSqu
         #[derive(Default)]
         #[allow(dead_code)]
         struct IntermediateRep {
-            pub dollar_special_left_square_bracket_property_period_name_right_square_bracket: Vec<i64>,
+            pub dollar_special_left_square_bracket_property_name_right_square_bracket: Vec<i64>,
         }
 
         let mut intermediate_rep = IntermediateRep::default();
@@ -2567,15 +2567,15 @@ impl std::str::FromStr for DollarSpecialLeftSquareBracketModelPeriodNameRightSqu
         while key_result.is_some() {
             let val = match string_iter.next() {
                 Some(x) => x,
-                None => return std::result::Result::Err("Missing value while parsing DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket".to_string())
+                None => return std::result::Result::Err("Missing value while parsing DollarSpecialLeftSquareBracketModelNameRightSquareBracket".to_string())
             };
 
             if let Some(key) = key_result {
                 #[allow(clippy::match_single_binding)]
                 match key {
                     #[allow(clippy::redundant_clone)]
-                    "$special[property.name]" => intermediate_rep.dollar_special_left_square_bracket_property_period_name_right_square_bracket.push(<i64 as std::str::FromStr>::from_str(val).map_err(|x| x.to_string())?),
-                    _ => return std::result::Result::Err("Unexpected key while parsing DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket".to_string())
+                    "$special[property.name]" => intermediate_rep.dollar_special_left_square_bracket_property_name_right_square_bracket.push(<i64 as std::str::FromStr>::from_str(val).map_err(|x| x.to_string())?),
+                    _ => return std::result::Result::Err("Unexpected key while parsing DollarSpecialLeftSquareBracketModelNameRightSquareBracket".to_string())
                 }
             }
 
@@ -2584,40 +2584,40 @@ impl std::str::FromStr for DollarSpecialLeftSquareBracketModelPeriodNameRightSqu
         }
 
         // Use the intermediate representation to return the struct
-        std::result::Result::Ok(DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
-            dollar_special_left_square_bracket_property_period_name_right_square_bracket: intermediate_rep.dollar_special_left_square_bracket_property_period_name_right_square_bracket.into_iter().next(),
+        std::result::Result::Ok(DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
+            dollar_special_left_square_bracket_property_name_right_square_bracket: intermediate_rep.dollar_special_left_square_bracket_property_name_right_square_bracket.into_iter().next(),
         })
     }
 }
 
-// Methods for converting between header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket> and hyper::header::HeaderValue
+// Methods for converting between header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelNameRightSquareBracket> and hyper::header::HeaderValue
 
 #[cfg(any(feature = "client", feature = "server"))]
-impl std::convert::TryFrom<header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket>> for hyper::header::HeaderValue {
+impl std::convert::TryFrom<header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelNameRightSquareBracket>> for hyper::header::HeaderValue {
     type Error = String;
 
-    fn try_from(hdr_value: header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket>) -> std::result::Result<Self, Self::Error> {
+    fn try_from(hdr_value: header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelNameRightSquareBracket>) -> std::result::Result<Self, Self::Error> {
         let hdr_value = hdr_value.to_string();
         match hyper::header::HeaderValue::from_str(&hdr_value) {
              std::result::Result::Ok(value) => std::result::Result::Ok(value),
              std::result::Result::Err(e) => std::result::Result::Err(
-                 format!("Invalid header value for DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket - value: {} is invalid {}",
+                 format!("Invalid header value for DollarSpecialLeftSquareBracketModelNameRightSquareBracket - value: {} is invalid {}",
                      hdr_value, e))
         }
     }
 }
 
 #[cfg(any(feature = "client", feature = "server"))]
-impl std::convert::TryFrom<hyper::header::HeaderValue> for header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket> {
+impl std::convert::TryFrom<hyper::header::HeaderValue> for header::IntoHeaderValue<DollarSpecialLeftSquareBracketModelNameRightSquareBracket> {
     type Error = String;
 
     fn try_from(hdr_value: hyper::header::HeaderValue) -> std::result::Result<Self, Self::Error> {
         match hdr_value.to_str() {
              std::result::Result::Ok(value) => {
-                    match <DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket as std::str::FromStr>::from_str(value) {
+                    match <DollarSpecialLeftSquareBracketModelNameRightSquareBracket as std::str::FromStr>::from_str(value) {
                         std::result::Result::Ok(value) => std::result::Result::Ok(header::IntoHeaderValue(value)),
                         std::result::Result::Err(err) => std::result::Result::Err(
-                            format!("Unable to convert header value '{}' into DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket - {}",
+                            format!("Unable to convert header value '{}' into DollarSpecialLeftSquareBracketModelNameRightSquareBracket - {}",
                                 value, err))
                     }
              },
@@ -2629,10 +2629,10 @@ impl std::convert::TryFrom<hyper::header::HeaderValue> for header::IntoHeaderVal
 }
 
 #[cfg(feature = "server")]
-impl std::convert::TryFrom<header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket>>> for hyper::header::HeaderValue {
+impl std::convert::TryFrom<header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBracketModelNameRightSquareBracket>>> for hyper::header::HeaderValue {
     type Error = String;
 
-    fn try_from(hdr_values: header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket>>) -> std::result::Result<Self, Self::Error> {
+    fn try_from(hdr_values: header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBracketModelNameRightSquareBracket>>) -> std::result::Result<Self, Self::Error> {
         let hdr_values : Vec<String> = hdr_values.0.into_iter().map(|hdr_value| {
             hdr_value.to_string()
         }).collect();
@@ -2646,21 +2646,21 @@ impl std::convert::TryFrom<header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBr
 }
 
 #[cfg(feature = "server")]
-impl std::convert::TryFrom<hyper::header::HeaderValue> for header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket>> {
+impl std::convert::TryFrom<hyper::header::HeaderValue> for header::IntoHeaderValue<Vec<DollarSpecialLeftSquareBracketModelNameRightSquareBracket>> {
     type Error = String;
 
     fn try_from(hdr_values: hyper::header::HeaderValue) -> std::result::Result<Self, Self::Error> {
         match hdr_values.to_str() {
             std::result::Result::Ok(hdr_values) => {
-                let hdr_values : std::vec::Vec<DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket> = hdr_values
+                let hdr_values : std::vec::Vec<DollarSpecialLeftSquareBracketModelNameRightSquareBracket> = hdr_values
                 .split(',')
                 .filter_map(|hdr_value| match hdr_value.trim() {
                     "" => std::option::Option::None,
                     hdr_value => std::option::Option::Some({
-                        match <DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket as std::str::FromStr>::from_str(hdr_value) {
+                        match <DollarSpecialLeftSquareBracketModelNameRightSquareBracket as std::str::FromStr>::from_str(hdr_value) {
                             std::result::Result::Ok(value) => std::result::Result::Ok(value),
                             std::result::Result::Err(err) => std::result::Result::Err(
-                                format!("Unable to convert header value '{}' into DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket - {}",
+                                format!("Unable to convert header value '{}' into DollarSpecialLeftSquareBracketModelNameRightSquareBracket - {}",
                                     hdr_value, err))
                         }
                     })
@@ -2674,7 +2674,7 @@ impl std::convert::TryFrom<hyper::header::HeaderValue> for header::IntoHeaderVal
     }
 }
 
-impl DollarSpecialLeftSquareBracketModelPeriodNameRightSquareBracket {
+impl DollarSpecialLeftSquareBracketModelNameRightSquareBracket {
     /// Helper function to allow us to convert this model to an XML string.
     /// Will panic if serialisation fails.
     #[allow(dead_code)]
@@ -8445,16 +8445,16 @@ impl TestEnumParametersEnumHeaderStringParameter {
 #[cfg_attr(feature = "conversion", derive(frunk_enum_derive::LabelledGenericEnum))]
 pub enum TestEnumParametersEnumQueryDoubleParameter {
     #[serde(rename = "1.1")]
-    Variant1Period1,
+    Variant11,
     #[serde(rename = "-1.2")]
-    Variant1Period2,
+    Variant12,
 }
 
 impl std::fmt::Display for TestEnumParametersEnumQueryDoubleParameter {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match *self {
-            TestEnumParametersEnumQueryDoubleParameter::Variant1Period1 => write!(f, "1.1"),
-            TestEnumParametersEnumQueryDoubleParameter::Variant1Period2 => write!(f, "-1.2"),
+            TestEnumParametersEnumQueryDoubleParameter::Variant11 => write!(f, "1.1"),
+            TestEnumParametersEnumQueryDoubleParameter::Variant12 => write!(f, "-1.2"),
         }
     }
 }
@@ -8464,8 +8464,8 @@ impl std::str::FromStr for TestEnumParametersEnumQueryDoubleParameter {
 
     fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
         match s {
-            "1.1" => std::result::Result::Ok(TestEnumParametersEnumQueryDoubleParameter::Variant1Period1),
-            "-1.2" => std::result::Result::Ok(TestEnumParametersEnumQueryDoubleParameter::Variant1Period2),
+            "1.1" => std::result::Result::Ok(TestEnumParametersEnumQueryDoubleParameter::Variant11),
+            "-1.2" => std::result::Result::Ok(TestEnumParametersEnumQueryDoubleParameter::Variant12),
             _ => std::result::Result::Err(format!("Value not valid: {}", s)),
         }
     }