1 files changed, 105 insertions, 0 deletions
diff --git a/freetype/builds/meson/extract_libtool_version.py b/freetype/builds/meson/extract_libtool_version.py
new file mode 100644
index 000000000..0569481b3
--- /dev/null
+++ b/freetype/builds/meson/extract_libtool_version.py
@@ -0,0 +1,105 @@
+#!/usr/bin/env python
+"""Extract the libtool version from `configure.raw`.
+
+This script parses the `configure.raw` file to extract the libtool version
+number.  By default, the full dotted version number is printed, but
+`--major`, `--minor` or `--patch` can be used to only print one of these
+values instead.
+"""
+
+from __future__ import print_function
+
+import argparse
+import os
+import re
+import sys
+
+# Expected input:
+#
+#  ...
+#  version_info='23:2:17'
+#  ...
+
+RE_VERSION_INFO = re.compile(r"^version_info='(\d+):(\d+):(\d+)'")
+
+
+def parse_configure_raw(header):
+    major = None
+    minor = None
+    patch = None
+
+    for line in header.splitlines():
+        line = line.rstrip()
+        m = RE_VERSION_INFO.match(line)
+        if m:
+            assert major == None, "version_info appears more than once!"
+            major = m.group(1)
+            minor = m.group(2)
+            patch = m.group(3)
+            continue
+
+    assert (
+        major and minor and patch
+    ), "This input file is missing a version_info definition!"
+
+    return (major, minor, patch)
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+
+    group = parser.add_mutually_exclusive_group()
+    group.add_argument(
+        "--major",
+        action="store_true",
+        help="Only print the major version number.",
+    )
+    group.add_argument(
+        "--minor",
+        action="store_true",
+        help="Only print the minor version number.",
+    )
+    group.add_argument(
+        "--patch",
+        action="store_true",
+        help="Only print the patch version number.",
+    )
+    group.add_argument(
+        "--soversion",
+        action="store_true",
+        help="Only print the libtool library suffix.",
+    )
+
+    parser.add_argument(
+        "input",
+        metavar="CONFIGURE_RAW",
+        help="The input configure.raw file to parse.",
+    )
+
+    args = parser.parse_args()
+    with open(args.input) as f:
+        raw_file = f.read()
+
+    version = parse_configure_raw(raw_file)
+
+    if args.major:
+        print(version[0])
+    elif args.minor:
+        print(version[1])
+    elif args.patch:
+        print(version[2])
+    elif args.soversion:
+        # Convert libtool version_info to the library suffix.
+        # (current,revision, age) -> (current - age, age, revision)
+        print(
+            "%d.%s.%s"
+            % (int(version[0]) - int(version[2]), version[2], version[1])
+        )
+    else:
+        print("%s.%s.%s" % version)
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())