File size: 3,405 Bytes
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class VersionComparator:
@staticmethod
def compare_version(v1: str, v2: str) -> int:
"""根据 Semver 语义版本规范来比较版本号的大小。支持不仅局限于 3 个数字的版本号，并处理预发布标签。
参考: https://semver.org/lang/zh-CN/
返回 1 表示 v1 > v2，返回 -1 表示 v1 < v2，返回 0 表示 v1 = v2。
"""
v1 = v1.lower().replace("v", "")
v2 = v2.lower().replace("v", "")
def split_version(version):
match = re.match(
r"^([0-9]+(?:\.[0-9]+)*)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+(.+))?$",
version,
)
if not match:
return [], None
major_minor_patch = match.group(1).split(".")
prerelease = match.group(2)
# buildmetadata = match.group(3) # 构建元数据在比较时忽略
parts = [int(x) for x in major_minor_patch]
prerelease = VersionComparator._split_prerelease(prerelease)
return parts, prerelease
v1_parts, v1_prerelease = split_version(v1)
v2_parts, v2_prerelease = split_version(v2)
# 比较数字部分
length = max(len(v1_parts), len(v2_parts))
v1_parts.extend([0] * (length - len(v1_parts)))
v2_parts.extend([0] * (length - len(v2_parts)))
for i in range(length):
if v1_parts[i] > v2_parts[i]:
return 1
if v1_parts[i] < v2_parts[i]:
return -1
# 比较预发布标签
if v1_prerelease is None and v2_prerelease is not None:
return 1 # 没有预发布标签的版本高于有预发布标签的版本
if v1_prerelease is not None and v2_prerelease is None:
return -1 # 有预发布标签的版本低于没有预发布标签的版本
if v1_prerelease is not None and v2_prerelease is not None:
len_pre = max(len(v1_prerelease), len(v2_prerelease))
for i in range(len_pre):
p1 = v1_prerelease[i] if i < len(v1_prerelease) else None
p2 = v2_prerelease[i] if i < len(v2_prerelease) else None
if p1 is None and p2 is not None:
return -1
if p1 is not None and p2 is None:
return 1
if isinstance(p1, int) and isinstance(p2, str):
return -1
if isinstance(p1, str) and isinstance(p2, int):
return 1
if isinstance(p1, int) and isinstance(p2, int):
if p1 > p2:
return 1
if p1 < p2:
return -1
if isinstance(p1, str) and isinstance(p2, str):
if p1 > p2:
return 1
if p1 < p2:
return -1
return 0 # 预发布标签完全相同
return 0 # 数字部分和预发布标签都相同
@staticmethod
def _split_prerelease(prerelease):
if not prerelease:
return None
parts = prerelease.split(".")
result = []
for part in parts:
if part.isdigit():
result.append(int(part))
else:
result.append(part)
return result
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