[jsonschema] Invalid import path when referencing files with dots.

[ilovelinux]

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Describe the bug When a local file is referenced and it has more than one dot in the name, it is misinterpreted during import syntax generation. It can leads to wrong models (example 1) or generator error (example 2)

For more details & reproducible example: https://github.com/ilovelinux/datamodel-code-generator-issue-2332

To Reproduce

Example 1

commons.schema.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.com/commons.schema.json",
  "title": "Commons",
  "description": "Commons objects",
  "$defs": {
    "defaultArray": {
      "type": "array",
      "minLength": 1,
      "maxLength": 100
    }
  }
}

products.schema.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.com/products.schema.json",
  "title": "Products",
  "description": "The products in the catalog",
  "$ref": "commons.schema.json#/$defs/defaultArray"
}

Example 2

commons.with.more.dots.schema.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.com/commons.with.more.dots.schema.json",
  "title": "Commons",
  "description": "Commons objects",
  "$defs": {
    "defaultArray": {
      "type": "array",
      "minLength": 1,
      "maxLength": 100
    }
  }
}

products.with.more.dots.schema.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.com/products.with.more.dots.schema.schema.json",
  "title": "Products",
  "description": "The products in the catalog",
  "$ref": "commons.with.more.dots.schema.json#/$defs/defaultArray"
}

Used commandline:

$ datamodel-codegen --input inputs/ --input-file-type jsonschema --output outputs/

Expected behavior

Example 1

in products_schema.py, common_schema should be imported correctly.

Example 2

It should generate code. It crashes instead.

Version:

• OS: Linux
• Python version: 3.13
• datamodel-code-generator version: 0.28.2

Additional context

Probably related to https://github.com/koxudaxi/datamodel-code-generator/pull/2008

For more details & reproducible example: https://github.com/ilovelinux/datamodel-code-generator-issue-2332

Workaround for Example 1

Generate the models using --treat-dot-as-module flag.