mmpack-build: Move SourceStrapSpecs in dedicated module

Change-Id: Ie0d8b91cf2ef0693504f09fd1898d38a1ce0f1f2

Author: nbourdau

Diff for: src/mmpack_build/meson.build

@@ -37,6 +37,7 @@ mmpack_build_sources = files(
         'pe_utils.py',
         'prefix.py',
         'provide.py',
+        'source_strap_specs.py',
         'source_tarball.py',
         'src_package.py',
         'syspkg_manager.py',

Diff for: src/mmpack_build/source_strap_specs.py

@@ -0,0 +1,57 @@
+# @mindmaze_header@
+"""
+Representation of loaded sources-strap file
+"""
+
+import re
+from os.path import join as join_path
+from typing import Any, Dict, List, Optional
+
+import yaml
+from .common import Assert, get_name_version_from_srcdir
+
+
+def _multiple_replace(lookup: Dict[str, str], text: str) -> str:
+    # Create a regular expression from all of the dictionary keys
+    regex = re.compile('|'.join(lookup.keys()))
+
+    # For each match, look up the corresponding value in the dictionary
+    return regex.sub(lambda match: lookup[match.group(0)], text)
+
+
+class SourceStrapSpecs:
+    """source-strap config"""
+
+    def __init__(self, srcdir: str):
+        name, version = get_name_version_from_srcdir(srcdir)
+        lookup = {
+            '@MMPACK_NAME@': name,
+            '@MMPACK_VERSION@': version,
+        }
+        try:
+            path = join_path(srcdir, 'mmpack/sources-strap')
+            with open(path, encoding='utf-8') as stream:
+                content = _multiple_replace(lookup, stream.read())
+                specs = yaml.load(content, Loader=yaml.BaseLoader)
+        except FileNotFoundError:
+            specs = {}
+
+        self.depends: List[str] = specs.pop('depends', [])
+        self.upstream_method: Optional[str] = specs.pop('method', None)
+        self.upstream_url: Optional[str] = specs.pop('url', None)
+        self.patches: List[str] = specs.pop('patches', [])
+        self._opts: Dict[str, str] = specs
+
+        self._validate()
+
+    def get(self, *args) -> Any:
+        """Get optional value"""
+        return self._opts.get(*args)
+
+    def _validate(self):
+        if self.upstream_method:
+            if self.upstream_method not in ('git', 'tar'):
+                raise Assert('Invalid method ' + self.upstream_method)
+
+            if not self.upstream_url:
+                raise Assert('upstream method specified but url missing')

Diff for: src/mmpack_build/source_tarball.py

@@ -13,12 +13,11 @@
 from typing import Dict, Iterator, List, NamedTuple, Optional
 from zipfile import ZipFile
 
-import yaml
-
 from .common import *
 from .errors import DownloadError, MMPackBuildError, ShellException
 from .file_utils import filetype
 from .prefix import new_mmpack_prefix_context, prefix_install, run_build_script
+from .source_strap_specs import SourceStrapSpecs
 from .workspace import Workspace, cached_download, find_project_root_folder
 
 
@@ -32,52 +31,6 @@ class ProjectSource(NamedTuple):
     srcdir: str
 
 
-def _multiple_replace(lookup: Dict[str, str], text: str) -> str:
-    # Create a regular expression from all of the dictionary keys
-    regex = re.compile('|'.join(lookup.keys()))
-
-    # For each match, look up the corresponding value in the dictionary
-    return regex.sub(lambda match: lookup[match.group(0)], text)
-
-
-class SourceStrapSpecs:
-    """source-strap config"""
-
-    def __init__(self, srcdir: str):
-        name, version = get_name_version_from_srcdir(srcdir)
-        lookup = {
-            '@MMPACK_NAME@': name,
-            '@MMPACK_VERSION@': version,
-        }
-        try:
-            path = join_path(srcdir, 'mmpack/sources-strap')
-            with open(path, encoding='utf-8') as stream:
-                content = _multiple_replace(lookup, stream.read())
-                specs = yaml.load(content, Loader=yaml.BaseLoader)
-        except FileNotFoundError:
-            specs = {}
-
-        self.depends: List[str] = specs.pop('depends', [])
-        self.upstream_method: Optional[str] = specs.pop('method', None)
-        self.upstream_url: Optional[str] = specs.pop('url', None)
-        self.patches: List[str] = specs.pop('patches', [])
-        self._opts: Dict[str, str] = specs
-
-        self._validate()
-
-    def get(self, *args) -> Any:
-        """Get optional value"""
-        return self._opts.get(*args)
-
-    def _validate(self):
-        if self.upstream_method:
-            if self.upstream_method not in ('git', 'tar'):
-                raise Assert('Invalid method ' + self.upstream_method)
-
-            if not self.upstream_url:
-                raise Assert('upstream method specified but url missing')
-
-
 def _strip_leading_comp_tar_iter(tar: TarFile) -> Iterator[TarInfo]:
     for info in tar.getmembers():
         info = copy(info)