[oe-commits] [bitbake] 02/12: bitbake: utils: add is_semver function

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rpurdie pushed a commit to branch master-next
in repository bitbake.

commit c9e948a61cfa975b2bff10aad53ccbf9f810857d
Author: Jean-Marie LEMETAYER <jean-marie.lemetayer at savoirfairelinux.com>
AuthorDate: Mon Jan 20 11:27:10 2020 +0100

    bitbake: utils: add is_semver function
    
    This function checks if a string is a semantic version:
        https://semver.org/spec/v2.0.0.html
    
    The npm fetcher needs this function to validate its version parameter.
    
    Signed-off-by: Jean-Marie LEMETAYER <jean-marie.lemetayer at savoirfairelinux.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 lib/bb/utils.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/lib/bb/utils.py b/lib/bb/utils.py
index 28368f0..47805d0 100644
--- a/lib/bb/utils.py
+++ b/lib/bb/utils.py
@@ -1611,3 +1611,29 @@ class LogCatcher(logging.Handler):
         self.messages.append(bb.build.logformatter.format(record))
     def contains(self, message):
         return (message in self.messages)
+
+def is_semver(version):
+    """
+        Is the version string following the semver semantic?
+
+        https://semver.org/spec/v2.0.0.html
+    """
+    regex = re.compile(
+    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-]+)*
+    ))?
+    $
+    """, re.VERBOSE)
+
+    if regex.match(version) is None:
+        return False
+
+    return True

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