在 VariantDir() 环境中使用 Glob() 在 Python 中递归查找文件? [英] Use a Glob() in VariantDir() einvironment to find files recursively in Python?

问题描述

如何在 Python 的 VariantDir() 环境中实现递归 Glob()?

How can one make recursive Glob() in a VariantDir() environment in Python?

问题的答案 <使用 Glob() 在 Python 中递归查找文件?> 将不起作用，因为您需要使用 Glob() 来获取知道 VariantDir() 环境.

The answer from the question <Use a Glob() to find files recursively in Python?> will not work, because you need use Glob() to get a list of files that is aware of VariantDir() environment.

所以你需要这样的东西:

So you need something like:

import fnmatch
import os

matches = []
for root, dirnames, filenames in os.walk('src'):
  for filename in fnmatch.filter(filenames, '*.c'):
    matches.append(os.path.join(root, filename))

matches = Glob(matches)

这行得通吗?

推荐答案

您的方法只需稍作调整，如下所示:

Your approach would work with a minor tweak as follows:

import fnmatch
import os

def RecursiveGlob(pathname)
    matches = []
    for root, dirnames, filenames in os.walk(pathname):
        for filename in fnmatch.filter(filenames, '*.c'):
            matches.append(File(os.path.join(root, filename)))

    return matches

请注意，我将其转换为 File()，因为如果strings"参数为 false，SCons Glob() 函数将返回节点.

Notice that I converted it to a File(), since the SCons Glob() function returns Nodes if the "strings" parameter is false.

为了能够处理 VariantDir 等并将该功能与现有的 SCons Glob() 功能更好地集成，您实际上可以合并对现有 Glob() 函数的调用，如下所示:

To be able to handle the VariantDir, etc and to better integrate the functionality with the existing SCons Glob() functionality, you could actually incorporate a call to the existing Glob() function, like this:

# Notice the signature is similar to the SCons Glob() signature,
# look at scons-2.1.0/engine/SCons/Node/FS.py line 1403
def RecursiveGlob(pattern, ondisk=True, source=True, strings=False):
    matches = []
    # Instead of using os.getcwd() consider passing-in a path
    for root, dirnames, filenames in os.walk(os.getcwd()):
        cwd = Dir(root)
        # Glob() returns a list, so using extend() instead of append()
        # The cwd param isnt documented, (look at the code) but its 
        # how you tell SCons what directory to look in.
        matches.extend(Glob(pattern, ondisk, source, strings, cwd))

    return matches

您可以更进一步并执行以下操作:

You could take it one step further and do the following:

def MyGlob(pattern, ondisk=True, source=True, strings=False, recursive=False):
    if not recursive:
        return Glob(pattern, ondisk, source, strings)

    matches = []
    # Instead of using os.getcwd() consider passing-in a path
    for root, dirnames, filenames in os.walk(os.getcwd()):
        cwd = Dir(root)
        # Glob() returns a list, so using extend() instead of append()
        # The cwd param isnt documented, (look at the code) but its 
        # how you tell SCons what directory to look in.
        matches.extend(Glob(pattern, ondisk, source, strings, cwd))

    return matches

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