Revert "improve ABNF integration of ssvc namespaces"

Reason: docker build broken

This reverts commit 289719b.

Author: Renae Metcalf

pyproject.toml

@@ -48,7 +48,6 @@ dependencies = [
     "pydantic>=2.11.7",
     "semver>=3.0.4",
     "fastapi[all,standard]>=0.116.1",
-    "abnf-to-regexp>=1.2.0",
 ]
 dynamic = ["version",]
 

src/ssvc/utils/patterns.py

@@ -21,10 +21,6 @@
 #  This Software includes and/or makes use of Third-Party Software each
 #  subject to its own license.
 #  DM24-0278
-from io import StringIO
-from pathlib import Path
-
-from abnf_to_regexp.main import run as run_abnf_to_regexp, Params, Format
 
 # from https://semver.org/
 VERSION_PATTERN = r"^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"
@@ -41,32 +37,40 @@
 LENGTH_CHECK_PATTERN = r"(?=.{3,1000}$)"
 
 
-# use abnf-to-regexp as library to catch the output str of the equivalent of
-#  abnf-to-regexp --format python-nested -i ssvc_namespace_pattern.abnf
-# and execute it as python code
-
-_abnf_python_code = StringIO()
-_err = StringIO()
-_input_pth = Path(__file__).parent / "ssvc_namespace_pattern.abnf"
-_params = Params(
-    input_path=_input_pth,
-    output_path=None,
-    fmt=Format.PYTHON_NESTED,
+# fmt: off
+# --- the following section is generated with
+#  abnf-to-regexp --format python-nested -i ssvc_namespace_pattern.abnf | \
+#    sed --expression='s/{,/{0,/g' --expression='s/\\\\#/\#/g'
+alnum = '[a-zA-Z0-9]'
+lower = '[a-z]'
+alnumlow = f'({lower}|[0-9])'
+dash = '-'
+alnumlowdash = f'({alnumlow}|{dash})'
+label = f'{alnumlow}(({alnumlowdash}){{0,61}}{alnumlow})?'
+reverse_dns = f'{label}(\\.{label})+'
+dot = '\\.'
+specialchar = f'({dot}|{dash})'
+fragment_seg = f'({alnumlow})+({specialchar}({alnumlow})+)*'
+x_name = f'{reverse_dns}#{fragment_seg}'
+x_base = f'x_{x_name}'
+ns_core = f'{lower}{alnumlow}(({specialchar})?({alnumlow})+)+'
+reg_base = f'{ns_core}(#{fragment_seg})?'
+base_ns = f'({x_base}|{reg_base})'
+singleton = '[0-9A-WY-Za-wy-z]'
+bcp47 = (
+    '(([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-z'
+    'A-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-'
+    f'(({alnum}){{5,8}}|[0-9]({alnum}){{3}}))*(-{singleton}(-'
+    f'({alnum}){{2,8}})+)*(-[xX](-({alnum}){{2,8}})+)?|[xX](-'
+    f'({alnum}){{2,8}})+|i-default|i-mingo)'
 )
-
-if (
-    run_abnf_to_regexp(params=_params, stdout=_abnf_python_code, stderr=_err)
-    > 0
-):
-    raise RuntimeError(
-        f"Reading of {_input_pth} failed with {_err.getvalue()}"
-    )
-
-exec(_abnf_python_code.getvalue())
-
-#  we do not need them anymore
-del _abnf_python_code
-del _err
+translation = f'\\.({reverse_dns}|{x_name})\\${bcp47}'
+ext_seg = f'({bcp47}|\\.{x_name}|{translation})'
+lang_ext = f'(/|/{bcp47})'
+extensions = f'{lang_ext}((/{ext_seg})+)?'
+namespace = f'{base_ns}({extensions})?'
+# --- end of generated output
+# fmt: on
 
 # --- define base patterns to be compatible with previously existing tests
 BASE_PATTERN = ns_core