我想有一个水银挂钩,将提交如果二进制文件被提交超过1兆字节大于将中止交易的交易之前运行。我发现下面的代码工作除了一个问题很好。如果我的变更包括删除文件,这个钩子会抛出异常。

钩(我使用pretxncommit = python:checksize.newbinsize):

from mercurial import context, util
from mercurial.i18n import _
import mercurial.node as dpynode

'''hooks to forbid adding binary file over a given size

Ensure the PYTHONPATH is pointing where hg_checksize.py is and setup your
repo .hg/hgrc like this:

[hooks]
pretxncommit = python:checksize.newbinsize
pretxnchangegroup = python:checksize.newbinsize
preoutgoing = python:checksize.nopull

[limits]
maxnewbinsize = 10240
'''

def newbinsize(ui, repo, node=None, **kwargs):
    '''forbid to add binary files over a given size'''
    forbid = False
    # default limit is 10 MB
    limit = int(ui.config('limits', 'maxnewbinsize', 10000000))
    tip = context.changectx(repo, 'tip').rev()
    ctx = context.changectx(repo, node)
    for rev in range(ctx.rev(), tip+1):
        ctx = context.changectx(repo, rev)
        print ctx.files()
        for f in ctx.files():
            fctx = ctx.filectx(f)
            filecontent = fctx.data()
            # check only for new files
            if not fctx.parents():
                if len(filecontent) > limit and util.binary(filecontent):
                    msg = 'new binary file %s of %s is too large: %ld > %ld\n'
                    hname = dpynode.short(ctx.node())
                    ui.write(_(msg) % (f, hname, len(filecontent), limit))
                    forbid = True
    return forbid

在例外:

$  hg commit -m 'commit message'
error: pretxncommit hook raised an exception: apps/helpers/templatetags/include_extends.py@bced6272d8f4: not found in manifest
transaction abort!
rollback completed
abort: apps/helpers/templatetags/include_extends.py@bced6272d8f4: not found in manifest!

我不熟悉编写水银挂钩,所以我很困惑的是怎么回事。为什么钩照顾被删除一个文件,如果汞已经知道了吗?有没有办法解决这个挂钩上,使得它的工作原理所有的时间?

<强>更新(解决): 我修改了钩来过滤掉变更删除的文件。

def newbinsize(ui, repo, node=None, **kwargs):
    '''forbid to add binary files over a given size'''
    forbid = False
    # default limit is 10 MB
    limit = int(ui.config('limits', 'maxnewbinsize', 10000000))
    ctx = repo[node]
    for rev in xrange(ctx.rev(), len(repo)):
        ctx = context.changectx(repo, rev)

        # do not check the size of files that have been removed
        # files that have been removed do not have filecontexts
        # to test for whether a file was removed, test for the existence of a filecontext
        filecontexts = list(ctx)
        def file_was_removed(f):
            """Returns True if the file was removed"""
            if f not in filecontexts:
                return True
            else:
                return False

        for f in itertools.ifilterfalse(file_was_removed, ctx.files()):
            fctx = ctx.filectx(f)
            filecontent = fctx.data()
            # check only for new files
            if not fctx.parents():
                if len(filecontent) > limit and util.binary(filecontent):
                    msg = 'new binary file %s of %s is too large: %ld > %ld\n'
                    hname = dpynode.short(ctx.node())
                    ui.write(_(msg) % (f, hname, len(filecontent), limit))
                    forbid = True
    return forbid
有帮助吗?

解决方案

for f in ctx.files()将包括删除的文件,就需要过滤出那些

(和可以取代通过for rev in range(ctx.rev(), tip+1): for rev in xrange(ctx.rev(), len(repo)):,和删除tip = ...

如果您使用的是现代的汞,你不这样做,但ctx = context.changectx(repo, node)代替ctx = repo[node]

其他提示

这是很容易在一个壳钩做在最近水银:

if hg locate -r tip "set:(added() or modified()) and binary() and size('>100k')"; then
  echo "bad files!"
  exit 1
else
  exit 0
fi

这是怎么回事吗?首先,我们有一个文件集中找到的所有更改的文件有问题的(参见“汞的帮助文件集”中的汞1.9)。在“查找”命令般的地位,但它只是列表中的文件,如果发现任何会返回0。我们指定“-r尖端”来看看未决提交。

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