comparison mercurial/localrepo.py @ 40535:473510bf0575

localrepo: extract loading of hgrc files to standalone function

Various 3rd party extensions supplement where per-repo config data
lives. Looking at their sources, they resort to unorthodox means to
inject the config data. And the way they do it is susceptible to
corner cases. e.g. not processing automatic extension loads,
not reacting to new or disabled extensions in configs, etc.

This commit extracts the core logic of loading hgrc files into
a standalone function so there is a clear function that can be
monkeypatched to inject per-repo config data at repository open
time.

Differential Revision: https://phab.mercurial-scm.org/D5221

40534:7ed611c60168

        requirements = set()

    # The .hg/hgrc file may load extensions or contain config options
    # that influence repository construction. Attempt to load it and
    # process any new extensions that it may have pulled in.
    try:
        ui.readconfig(hgvfs.join(b'hgrc'), root=wdirvfs.base)
        # Run this before extensions.loadall() so extensions can be
        # automatically enabled.
        afterhgrcload(ui, wdirvfs, hgvfs, requirements)
    except IOError:
        pass
    else:
        extensions.loadall(ui)

    # Set of module names of extensions loaded for this repository.
    extensionmodulenames = {m.__name__ for n, m in extensions.extensions(ui)}

        sharedpath=storebasepath,
        store=store,
        cachevfs=cachevfs,
        features=features,
        intents=intents)

def afterhgrcload(ui, wdirvfs, hgvfs, requirements):
    """Perform additional actions after .hg/hgrc is loaded.

    This function is called during repository loading immediately after

40535:473510bf0575

        requirements = set()

    # The .hg/hgrc file may load extensions or contain config options
    # that influence repository construction. Attempt to load it and
    # process any new extensions that it may have pulled in.
    if loadhgrc(ui, wdirvfs, hgvfs, requirements):
        afterhgrcload(ui, wdirvfs, hgvfs, requirements)
        extensions.loadall(ui)

    # Set of module names of extensions loaded for this repository.
    extensionmodulenames = {m.__name__ for n, m in extensions.extensions(ui)}

        sharedpath=storebasepath,
        store=store,
        cachevfs=cachevfs,
        features=features,
        intents=intents)

def loadhgrc(ui, wdirvfs, hgvfs, requirements):
    """Load hgrc files/content into a ui instance.

    This is called during repository opening to load any additional
    config files or settings relevant to the current repository.

    Returns a bool indicating whether any additional configs were loaded.

    Extensions should monkeypatch this function to modify how per-repo
    configs are loaded. For example, an extension may wish to pull in
    configs from alternate files or sources.
    """
    try:
        ui.readconfig(hgvfs.join(b'hgrc'), root=wdirvfs.base)
        return True
    except IOError:
        return False

def afterhgrcload(ui, wdirvfs, hgvfs, requirements):
    """Perform additional actions after .hg/hgrc is loaded.

    This function is called during repository loading immediately after