如何使用分隔符|*|拆分合并文本以还原原文件名与内容？

Alright, let's figure out how to reverse that file merging process you did. You've got a single string where each original text file's filename and content were combined, and the whole thing is separated by |*|—now you need to split it back into individual files with their correct names and content.

I'll walk you through a Python solution since it's perfect for this kind of file manipulation, and I'll cover two common scenarios based on how you might have merged the files initially.

Scenario 1: Combined string alternates between filenames and content #

If your merged string looks like this:
file1.txt|*|This is the content of file1|*|file2.txt|*|And this is file2's content

Here's the code to split and restore:

# Replace this with your actual merged string
combined_string = "file1.txt|*|This is the content of file1|*|file2.txt|*|And this is file2's content"

# Split the string using your separator
split_parts = combined_string.split('|*|')

# Iterate over parts in pairs (filename followed by content)
for idx in range(0, len(split_parts), 2):
    # Skip incomplete pairs (in case the string ends with a separator)
    if idx + 1 >= len(split_parts):
        continue
    
    filename = split_parts[idx].strip()
    content = split_parts[idx + 1]
    
    # Write the content to the original filename
    with open(filename, 'w', encoding='utf-8') as file:
        file.write(content)

print("Files restored successfully!")

How this works: #

• split('|*|') breaks the big string into a list where every even-indexed element is a filename, and the next odd-indexed element is its matching content.
• We loop with a step of 2 to grab each filename-content pair cleanly.
• strip() cleans up any accidental whitespace around filenames (a common quirk if you had trailing spaces during the merge process).
• Using with open ensures files are closed properly after writing, and specifying utf-8 prevents encoding issues with special characters in your content.

Scenario 2: Each file's entry is "filename\ncontent" separated by |*| #

If your merged string was built by first combining each filename and its content with a newline, then joining all entries with |*| (like file1.txt\nThis is file1|*|file2.txt\nThis is file2), use this code instead:

# Replace this with your actual merged string
combined_string = "file1.txt\nThis is the content of file1|*|file2.txt\nAnd this is file2's content"

split_parts = combined_string.split('|*|')

for entry in split_parts:
    # Skip empty entries (common if the string ends with the separator)
    if not entry.strip():
        continue
    
    # Split into filename and content at the first newline (preserves newlines in content)
    filename, content = entry.split('\n', maxsplit=1)
    filename = filename.strip()
    
    with open(filename, 'w', encoding='utf-8') as file:
        file.write(content)

print("Files restored successfully!")

How this works: #

• Each entry in the split list is a full "filename + content" block separated by a single newline.
• split('\n', maxsplit=1) splits the entry only once at the first newline, so any newlines in your actual file content are preserved exactly as they were.
• We clean up the filename and safely write the content back to its original file.

Quick Notes: #

• Run this script in the directory where you want the restored files to be saved.
• If your filenames or content accidentally contain the |*| separator (you should have avoided this during merging), you'll need to adjust the logic—but this covers the standard use case.

内容的提问来源于stack exchange，提问作者user2618553