(#933): ci/check_project_version.py: New script to check the project's version number across several files

Fixes https://gitlab.gnome.org/GNOME/librsvg/-/issues/933

Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/805>

1 files changed, 75 insertions, 0 deletions

diff --git a/ci/check_project_version.py b/ci/check_project_version.py
new file mode 100644
index 00000000..8c49c3b1
--- /dev/null
+++ b/ci/check_project_version.py
@@ -0,0 +1,75 @@
+# This script checks that the project's version is the same in a few files where it must appear.
+
+import re
+import sys
+
+def get_first_group(regex, line):
+    matches = regex.search(line)
+    if matches is None:
+        return None
+    else:
+        return matches.group(1)
+
+def get_configure_ac_version():
+    major_regex = re.compile(r'^m4_define\(\[rsvg_major_version\],\[(\d+)\]\)')
+    minor_regex = re.compile(r'^m4_define\(\[rsvg_minor_version\],\[(\d+)\]\)')
+    micro_regex = re.compile(r'^m4_define\(\[rsvg_micro_version\],\[(\d+)\]\)')
+
+    major = None
+    micro = None
+    minor = None
+
+    with open("configure.ac") as f:
+        for line in f.readlines():
+            if major is None:
+                major = get_first_group(major_regex, line)
+
+            if minor is None:
+                minor = get_first_group(minor_regex, line)
+
+            if micro is None:
+                micro = get_first_group(micro_regex, line)
+
+    if not (major and minor and micro):
+        raise Exception('configure.ac does not have all the necessary version numbers')
+            
+    return f'{major}.{minor}.{micro}'
+
+# Assumes a line like 'version = "1.2.3"'
+def get_version_from_toml(filename):
+    regex = re.compile(r'^version = "(\d+\.\d+\.\d+)"')
+
+    with open(filename) as f:
+        for line in f.readlines():
+            version = get_first_group(regex, line)
+            if version is not None:
+                return version
+
+    raise Exception(f'{filename} does not have a version number')
+
+def get_cargo_toml_version():
+    return get_version_from_toml('Cargo.toml')
+
+def get_doc_version():
+    return get_version_from_toml('doc/librsvg.toml')
+
+versions = [
+    ['configure.ac', get_configure_ac_version()],
+    ['Cargo.toml', get_cargo_toml_version()],
+    ['doc/librsvg.toml', get_doc_version()],
+]
+
+all_the_same = True
+
+for filename, version in versions[1:]:
+    if version != versions[0][1]:
+        all_the_same = False
+
+if not all_the_same:
+    print(f'Version numbers do not match, please fix them!\n', file=sys.stderr)
+    for filename, version in versions:
+        print(f'{filename}: {version}', file=sys.stderr)
+
+    sys.exit(1)
+
+print(f'Versions number match.  All good!', file=sys.stderr)