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1. #Free autocad lisp files for longitudinal profiles code
2. #Free autocad lisp files for longitudinal profiles plus

You may be asking, “Why strip out any trailing semicolons in the first line and then just add one back in the second line?” Answer: To avoid multiple semicolons at the end of the old paths before adding our new path. The last line adds a trailing backslash to the end of our new path because that’s how AutoCAD stores them. The third line adds the path to the bootstrap.lsp file. The second line checks to see if there are any old paths, and, if there are, puts a semicolon on the end.

The first line strips out any semicolons ( ) at the end of the old paths. These four lines work together to add the bootstrap.lsp file path to the end of any current trusted locations. This gets the original setting for the AutoCAD system variable TrustedPaths and saves it to a variable called “oldPaths.” Note: The opening parentheses in (cond ((findfile myFile) won’t have their matching closing parentheses until later in the code.

#Free autocad lisp files for longitudinal profiles code

If a special AutoCAD environment cannot be supported because the bootstrap code is missing, out-of-the-box AutoCAD continues to load without issue or errors. This is part of the beauty of bootstrapping. If not, no problem: AutoCAD will not attempt to alter the environment. This line checks to see if the bootstrap.lsp file can be found in the location you provided. Paths can have spaces, so “s:autocad 2016codebootstrap.lsp” is valid, too. For example, if the bootstrap.lsp file is located on your network at m:autocadprograms, then the code needs to use “m:autocadprogramsbootstrap.lsp” in the double quotes. This is because the backslash is a special character to AutoLISP code. “The network location is p:autocad_2016 but there are two backslashes in the code.” Is that a mistake? No.įor every normal backslash in your path, the AutoLISP code requires two backslashes. In the above example, the network location for the file is p:autocad_2016. I named the bootstrap code file bootstrap.lsp and I suggest you do the same. Note: This is the only line of code in this file that you need to edit for your own use! This line sets the location and filename for the bootstrap code-the one that will be available outside of the deployment created by the IT department. Note: In one of the few AutoLISP cases where capitalization matters, the “n” must be lower case. The “n” places the text on a new line on the AutoCAD command prompt. This is how most AutoCAD commands do their prompts. I intentionally added a blank space to the end of the text so that the cursor does not blink right after the ellipsis. This line prints “Loading bootstrap version of acad.lsp… ” to the AutoCAD command prompt. A detailed look at the acad.lsp code for bootstrapping AutoCAD OK, now let’s talk through each line in detail. I use capitalizations to help make the code clearer. Note: AutoLISP usually doesn’t care whether text is lower case or in caps except when you display something at the AutoCAD command prompt. However, if you are using the Visual LISP editor. Note: If you are using Notepad, enclose the filename in double quotes so Notepad does not add the. (setq newPaths (strcat (vl-string-right-trim " " oldPaths) (setq myFile "p:autocad_2016bootstrap.lsp") (princ "nLoading bootstrap version of acad.lsp.

Simply copy it into your text editor and save it as “acad.lsp” to your My Documents folder for now. The acad.lsp file not only has to load the required code it also adds the code’s location to trusted locations.Īll this is easily accomplished and does not violate the AutoCAD security model because it takes place in a trusted location. Trusted locations, recently introduced to AutoCAD, complicate things a bit. lsp file, bootstrap.lsp, that is located on the network. This, in essence, is bootstrapping: Our acad.lsp file will be deployed with AutoCAD-but its sole purpose is to find, and execute, another. The locally deployed acad.lsp file placed in %ProgramFiles%AutodeskAutoCAD 2016Support should do no more than locate another. I advocate placing customizations on the network when possible. The only acad.lsp file you need for bootstrapping AutoCAD I will explain everything clearly and you can always reach out to me if you have issues. Never written AutoLISP code? Don’t worry. (I’ve written so much AutoLISP code that I overuse parentheses in my normal writing, much to the despair of my editors.)

#Free autocad lisp files for longitudinal profiles plus

The code includes a lot of parentheses (I’ve heard LISP referred to, affectionately, as standing for Lost In Stupid Parentheses) plus AutoLISP functions (those odd bits of text that aren’t normal words) and normal words.