PJ_NAME.lsp — Project Name Extraction & Panel Prefix Generation¶

Module: pj_name.lsp
Version: v3.60
Category: Project Management
Complexity: Medium
Size: 3.7 KB (91 lines)

Note

Project Naming Logic

This module extracts the project name from the current directory path and generates a panel name prefix by combining initial letters from words in the project name, excluding special characters.

Overview¶

Purpose¶

The pj_name function creates an abbreviated project identifier (panel prefix) from the full project directory name. This prefix is used as a default naming pattern for panels and drawings within the project.

Algorithm¶

Extract Project Name from Directory

; Find last backslash in curdir
; Extract everything after it

Generate Panel Prefix (pnlname)
- Take first letter of project name
- Add first letter after each space
- Exclude special characters: [ ] { } * ^ % # @ / \ & “ ’ > < | ! ~ ( ) +`
- Maximum 5 characters
Fallback Logic
- If less than 3 characters: Use all non-special characters
- Truncate to 5 characters if longer

Examples¶

Example 1: Multi-Word Project¶

Input: C:\Project Files\ABC Manufacturing Plant\
Output:

pjname = “ABC Manufacturing Plant”
pnlname = “AMP” (A + M + P)

Example 2: Single Word Project¶

Input: C:\Project Files\Hospital\
Output:

pjname = “Hospital”
pnlname = “Hospi” (first 5 chars)

Example 3: Special Characters¶

Input: C:\Project Files\Smith & Jones (2024)\
Output:

pjname = “Smith & Jones (2024)”
pnlname = “SJ2” (S + J + 2, excluding & ( ))

Global Variables¶

Input:

curdir - Current project directory path

Output:

pjname - Full project name
pnlname - 5-character panel prefix
olddir - Saved copy of curdir

Character Filtering¶

Excluded Characters (Special):

[ ] { } * ^ % # ` @ / \ & " ' > < | ! ~ ( ) + space

Reason: These characters are invalid or problematic in AutoCAD block/layer names.

Document Metadata¶

Status: Comprehensive analysis
Last Updated: 2026-01-20

End of Document