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2be68fb4e0
While it's possible to write C code in Python, it's better to actually write Python code in Python. Use regular expressions, instead of counting characters, to allow a little bit more leeway when editing the cairo-version.h header file. Use a context manager to handle the lifetime of a file object. Use f-strings instead of the obsolete format() method.
53 lines
1.4 KiB
Python
Executable file
53 lines
1.4 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# cairo version.py
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#
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# Extracts the version from cairo-version.h for the meson build files.
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#
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import os
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import re
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import sys
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MAJOR_RE = re.compile(
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r'^\s*#\s*define\s+CAIRO_VERSION_MAJOR\s+(?P<number>[0-9]+)\s*$',
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re.UNICODE)
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MINOR_RE = re.compile(
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r'^\s*#\s*define\s+CAIRO_VERSION_MINOR\s+(?P<number>[0-9]+)\s*$',
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re.UNICODE)
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MICRO_RE = re.compile(
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r'^\s*#\s*define\s+CAIRO_VERSION_MICRO\s+(?P<number>[0-9]+)\s*$',
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re.UNICODE)
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version_major = None
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version_minor = None
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version_micro = None
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srcroot = os.path.dirname(__file__)
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version_h = os.path.join(srcroot, "src", "cairo-version.h")
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with open(version_h, "r", encoding="utf-8") as f:
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for line in f:
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res = MAJOR_RE.match(line)
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if res:
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assert version_major is None
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version_major = res.group('number')
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continue
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res = MINOR_RE.match(line)
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if res:
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assert version_minor is None
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version_minor = res.group('number')
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continue
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res = MICRO_RE.match(line)
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if res:
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assert version_micro is None
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version_micro = res.group('number')
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continue
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if not (version_major and version_minor and version_micro):
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print(f"ERROR: Could not extract version from cairo-version.h in {srcroot}", file=sys.stderr) # noqa
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sys.exit(-1)
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print(f"{version_major}.{version_minor}.{version_micro}")
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