使用metaweblog API实现通用博客发布 之 版本控制
接上一篇本地图片自动上传以及替换路径,继续解决使用API发布博客的版本控制问题。
当本地文档修订更新以后,如何发现版本更新,并自动发布到博客呢?我的解决方案是使用同一的git版本控制系统来实现版本监控。通过对比上一次发布的版本(commit版本),以及当前的版本(commit版本),发现两个版本间的文件差别,提供自动新建博文,或者更新博文的依据。
# encoding=utf-8
#!/bin/sh python3
import git #gitpython
import inspect
class RepoScanner():
def __init__(self, repopath, branch):
self._root = repopath
self._branch = branch
try:
self._repo = git.Repo(self._root)
except git.exc.NoSuchPathError as error: #如果没有git库,先创建git库
self._repo = git.Repo.init(path=self._root)
except:
raise Exception('Fail to open git repo at: %s' % (repopath))
heads = self._repo.heads
gotbranch = False
for head in heads:
if head.name == branch:
gotbranch = True
self.head = head
break
if not gotbranch:
print('create branch:', branch)
self.head = self._repo.create_head(branch)
def scanFiles(self, begin_hexsha=None):
all_commits = list(self._repo.iter_commits(self.head.name))
begin_commit = None
for commit in all_commits:
if commit.hexsha == begin_hexsha:
begin_commit = commit
break
sourceFiles = {}
if begin_commit:
beginIndexFile = git.IndexFile.from_tree(self._repo, begin_commit)
for (path, stage), entry in beginIndexFile.entries.items():
sourceFiles[path] = entry.hexsha
indexFile = git.IndexFile.from_tree(self._repo, self.head.commit)
files = {}
for (path, stage), entry in indexFile.entries.items():
if path in sourceFiles:
if entry.hexsha != sourceFiles[path]:
files[path] = { "hexsha": entry.hexsha, "from_hexsha": sourceFiles[path], "change": 'modify'}
else:
files[path] = { "hexsha": entry.hexsha, "change": 'new'}
return { "head": self.head.commit.hexsha, "files": files }