From cb5598c47252d563e7b9744834a43bc1b3e813a0 Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Sat, 28 Mar 2020 19:44:48 +0000
Subject: project.boost: factor out BoostVersion

---
 project/boost/version.py | 77 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 project/boost/version.py

(limited to 'project/boost/version.py')

diff --git a/project/boost/version.py b/project/boost/version.py
new file mode 100644
index 0000000..3ba9901
--- /dev/null
+++ b/project/boost/version.py
@@ -0,0 +1,77 @@
+# Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "cmake-common" project.
+# For details, see https://github.com/egor-tensin/cmake-common.
+# Distributed under the MIT License.
+
+from collections import namedtuple
+from functools import total_ordering
+import os.path
+import re
+
+
+_Version = namedtuple('_Version', ['major', 'minor', 'patch'])
+
+
+@total_ordering
+class Version:
+    def __init__(self, major, minor, patch):
+        self._impl = _Version(major, minor, patch)
+
+    @property
+    def major(self):
+        return self._impl.major
+
+    @property
+    def minor(self):
+        return self._impl.minor
+
+    @property
+    def patch(self):
+        return self._impl.patch
+
+    def __lt__(self, other):
+        return self._impl < other._impl
+
+    def __eq__(self, other):
+        return self._impl == other._impl
+
+    @staticmethod
+    def from_string(s):
+        result = re.match(r'^(\d+)\.(\d+)\.(\d+)$', s)
+        if result is None:
+            raise ValueError(f'invalid Boost version: {s}')
+        major = int(result.group(1))
+        minor = int(result.group(2))
+        patch = int(result.group(3))
+        return Version(major, minor, patch)
+
+    def __str__(self):
+        return f'{self.major}.{self.minor}.{self.patch}'
+
+    @property
+    def archive_ext(self):
+        return '.tar.gz'
+
+    def dir_path(self, parent_dir):
+        return os.path.join(parent_dir, self.dir_name)
+
+    @property
+    def dir_name(self):
+        return f'boost_{self.major}_{self.minor}_{self.patch}'
+
+    @property
+    def archive_name(self):
+        return f'{self.dir_name}{self.archive_ext}'
+
+    def _get_bintray_url(self):
+        return f'https://dl.bintray.com/boostorg/release/{self}/source/{self.archive_name}'
+
+    def _get_sourceforge_url(self):
+        return f'https://sourceforge.net/projects/boost/files/boost/{self}/{self.archive_name}/download'
+
+    def get_download_urls(self):
+        if self._impl < _Version(1, 63, 0):
+            # For versions older than 1.63.0, SourceForge is the only option:
+            return [self._get_sourceforge_url()]
+        # Otherwise, Bintray is preferred (the official website links to it).
+        return [self._get_bintray_url(), self._get_sourceforge_url()]
-- 
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