求助：使用Notepad++正则表达式重排G代码文本

Alright, let's get this text sorted out using Notepad++'s regex feature. I've worked out a solution that fits exactly what you need—here's how to do it step by step:

Step 1: Open the Replace Dialog #

Launch Notepad++, open your target text file, then press Ctrl+H to bring up the Replace window. Make sure you select the Regular expression option under "Search Mode", and leave the ". matches newline" box unchecked (we're working with single-line commands here).

Step 2: Use These Regex Patterns #

Find What:

(G\d+\s*(?:[XY]\d+(?:\.\d+)?\s*)*) S(\d+)

Replace With:

M42 P11 S$2 $1

Step 3: Run the Replacement #

Click Replace All—this will process every matching segment in your text automatically.

How It Works (Breakdown) #

Let's break down the regex so you understand why it works for your case:

• Capture Group 1 ((G\d+\s*(?:[XY]\d+(?:\.\d+)?\s*)*)):
  • G\d+: Matches the G-code prefix (like G0 or G1)
  • \s*: Handles any number of spaces (including zero) between elements
  • (?:[XY]\d+(?:\.\d+)?\s*)*: Matches any number of X/Y parameters, whether they're integers (like Y5) or have decimals (like X28.5). The ?: makes this a non-capturing group so it doesn't interfere with our main captured content.
• S(\d+): Matches the S value and captures the numeric part (like 0 or 255) as Capture Group 2.

The replacement string swaps the order: we first insert the fixed M42 P11 followed by the captured S value ($2), then add the original G-code and X/Y parameters ($1).

Example Test #

For your input text:

G0 X28.5 Y5 S0 G1 X74 S255

After replacement, you'll get exactly what you wanted:

M42 P11 S0 G0 X28.5 Y5 M42 P11 S255 G1 X74

Bonus: Handle Decimal S Values #

If your S values ever include decimals (like S123.45), just tweak the "Find What" regex to:

(G\d+\s*(?:[XY]\d+(?:\.\d+)?\s*)*) S(\d+(?:\.\d+)?)

This will capture both integer and decimal S values correctly.

内容的提问来源于stack exchange，提问作者user9704741