Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/utils/llvm-build/llvmbuild/configutil.py

@@ -1,66 +0,0 @@
-"""
-Defines utilities useful for performing standard "configuration" style tasks.
-"""
-
-import re
-import os
-
-def configure_file(input_path, output_path, substitutions):
-    """configure_file(input_path, output_path, substitutions) -> bool
-
-    Given an input and output path, "configure" the file at the given input path
-    by replacing variables in the file with those given in the substitutions
-    list. Returns true if the output file was written.
-
-    The substitutions list should be given as a list of tuples (regex string,
-    replacement), where the regex and replacement will be used as in 're.sub' to
-    execute the variable replacement.
-
-    The output path's parent directory need not exist (it will be created).
-
-    If the output path does exist and the configured data is not different than
-    it's current contents, the output file will not be modified. This is
-    designed to limit the impact of configured files on build dependencies.
-    """
-
-    # Read in the input data.
-    f = open(input_path, "rb")
-    try:
-        data = f.read()
-    finally:
-        f.close()
-
-    # Perform the substitutions.
-    for regex_string,replacement in substitutions:
-        regex = re.compile(regex_string)
-        data = regex.sub(replacement, data)
-
-    # Ensure the output parent directory exists.
-    output_parent_path = os.path.dirname(os.path.abspath(output_path))
-    if not os.path.exists(output_parent_path):
-        os.makedirs(output_parent_path)
-
-    # If the output path exists, load it and compare to the configured contents.
-    if os.path.exists(output_path):
-        current_data = None
-        try:
-            f = open(output_path, "rb")
-            try:
-                current_data = f.read()
-            except:
-                current_data = None
-            f.close()
-        except:
-            current_data = None
-
-        if current_data is not None and current_data == data:
-            return False
-
-    # Write the output contents.
-    f = open(output_path, "wb")
-    try:
-        f.write(data)
-    finally:
-        f.close()
-
-    return True