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Text File | 1997-06-21 | 13.2 KB | 207 lines

/************************** ** ** $Id: Finder.c ** $VER: Finder.c V3.00r2 (22.06.97) by Chris Jones ** ** File Finder Utility with wildcards. ** Based on Amiga Shopper Tutorial by Toby Simpson. ** ** Creation Date: 17.01.96 ** Revision History: ** 2.00 : (17.01.96) Initial version (beta release) ** 2.01 : (18.01.96) Added AppMenu support ** (Public Release #1 - AUI May '96) ** 2.02 : (04.02.96) Added option to start program ** iconified via tooltype. ** (Beta Release) ** 2.03 : (04.04.96) Added 'Busy Pointer' while ** searching for files. ** (Not Released) ** 2.04 : (19.07.96) Finder's window will now open on ** the default public screen, not ** on Workbench. (Workbench is ** usually the default public ** screen, but not always). ** When the Zoom gadget is used, the ** ListView no longer forgets what it ** was displaying. ** Major bug fix - In previous ** versions, the Listview would ** 'forget' any filenames which left ** the current view. ** Source cleaned up a bit. Some of ** functions generated by GadToolsBox ** which have to be modified have been ** moved from "Finder_GUI.c" to ** "Finder.c". This makes redesigning ** the GUI easier as the file needs ** less editing. ** NOTE: See "Finder_GUI.c" for the ** Instructions on the changes ** necessary. ** (Not Released) ** 2.05 : (27.07.96) MAJOR bug fix. The IDCMP handler has ** been altered so that is uses no CPU ** time at all instead of (as was the ** case in earlier versions) swallowing ** all spare CPU time and thereby ** causing slow down on everything else. ** Totally new error handling system. ** Up until now I never tested Finder ** in any situation which might cause ** it to fail. When I did, I noticed ** that the error handling system was ** massively flawed. I was using the ** function "sprintf" which copies text ** to a variable, but I was passing it ** a file pointer (stderr). If any of ** the error messages were called this ** caused a crash (e.g. If it is run on ** <OS3.0). Now, Finder opens a small ** CON: window as soon as any faults ** appear and leaves the window until ** the user closes it. It also gives ** a rough idea of a possible solution ** to the problem. ** Changed the ListView from being Read- ** Only to the Show Selected option. ** This has no effect on the operation ** of Finder, but it does mean that ** when you are trying to remember the ** name/path of a file in the display ** while scrolling around, you can mark ** it by clicking on it and it will ** change colour to blue and remain so. ** (I only added this as I thought it ** might be useful). ** (Public Release #2 - Aminet) ** 2.06 : (04.10.96) Nothing particularly new, just added ** the checking for a keyfile. However, ** the program IS NOT shareware, the ** keys are available freely from me. ** This is simply a way of keeping track ** of how many people (if any!) use ** Finder and if it is worth me ** continuing development. If you use it ** PLEASE register it. IT IS FREE!!! ** Ooops! Just noticed another silly bug! ** If your started Finder via wb, it would ** open the libraries twice (silly me!) ** I only spotted this because the ** registration req. is in the library ** opening routine, so it popped up twice! ** This has now been removed! ** 2.07 : (29.10.96) Due to a good response to the registration ** (thanks - you know who you are) I have ** changed the about requester so it shows ** who the program is registered to. ** 3.00r1 : (24.03.97) Still in heavy development. This is an ** internal, un-finished release. Do not ** distribute this version. ** The major addition to this release is the ** use of MUI for the GUI. ** Basic GUI layout has stayed the same, but ** with a few minor additions like an ** ASL requester available for the drawer ** option. ** DICE re-compiling support removed (MUI problems). ** 3.00r2 : (22.06.97) Total re-write of ALL code. ** I got very annoyed with the way 3.00r1 was ** working out, the code never reall worked ** properly. I know where the problem is; ** The string gadgets like their contents to ** be stored in "char *<variable>" form. The ** function to setup for the search ** (ParsePatternNoCase) needs it's input to be ** an STRPTR which is an unsigned char thingy. ** Basically, as yet, I have been unsuccessful ** in getting these two to tango. ** I have decided to re-write the entire ** program in an attempt to find alternate ** ways around the problem. I hope that this ** will be the very last major revision of Finder. ** This is also a good excuse for me to play ** around with some of MUI's neat features. ** Because of this, I have added: ** Cute little Finder logo in the About ** requester. ** Improvements in the Iconification code ** Drag&Drop!!!! Hurrah, the wonder marvel ** of the 90's MUI. You can now use this ** fantastic invention to drag drawers onto ** the drawer string (and iconified AppIcon). ** Also, if you drag a file, it will be stripped ** so that the drawer it is in is put in the ** string object. ** You can now choose if you want the search to ** be case sensitive or not and recursive or not. ** Gimmicks still to add: ** Finder Icon as the AppIcon ** Abort for the search (useful on CDs!) ** It is possible to abort a search by sending ** Finder a Ctrl-C, but it can't be directed at ** the window, it must be sent directly to the ** process. This is no problem if Finder is run ** from CLI, but causes difficulties if it was ** run from Wb as you will need an external program ** to send the abort signal (eg 'Commander', part of ** the excellent Executive system). ** ** Update: Wow! I have done it, Finder works! ** I really am quite surprised. It just started working ** when I used a pointer to an array. My thanks to Dave ** Michael for 'poking' me into looking at this problem. ** Even more surprising is that the list saving code worked ** basically first time with no major problems :) ** (I must be getting better at this! ) ** Update2: Wow again! I have done the case sensitivity/ ** recursion code with no problems too! ** All that is left is the abort stuff (DOH!) ** ** To compile, type "sc FinderV3.c" at a command line. ** You would be well advised to turn on the stack check/stack extend options ** in ENV:SCOptions, without this, Finder will crash on long searches. The reason ** is that the SearchDir function is able to calll itself. Therefore, for a search ** with lots of sub-dirs, you will have MASSIVE recursion of this function. That eats ** into the stack. I am looking into a workround for this, as I intend to use some ** hooks in Finder soon which means I will have to remove the stack extend option as ** it confuses hooks quite a lot (to the extent that they stop working!). ** Finder V3 is not finished yet, it still has a way to go on the object orientation front ** (in that it still uses Return_IDs which are a bad thing. I just need a bit more time to ** get to grips with hooks). This move to greater object orientation will also allow an ** easier implementation of the search abort. ** ** VERY IMPORTANT: If you are using MUIBuilder and wish to alter the ** GUI and re-generate it's source code....DONT! I have had to change the ** original GenCodeC quite a bit as it does have some holes. Sorry! ** If anyone wants info about how to re-compile, just e-mail me. ** ** There are a very large number of changes from the original MUIBuilder source ** (mostly involved with the object/class names and the helpnodes). ** ** Wherever possible, I have put comments in the source so it ** should be fairly easy to follow. ** ** My very largest thanks _MUST_ go to Toby Simpson who wrote the ** C Tutorial that this is based on. He is entirely responsible ** for my desire to program. I saw the first 'episode' of his ** tutorial and knew I had bought 'Complete Amiga C' (by Cliff ** Ramshaw) for a good reason. After many months playing with the ** very excellent 'GadToolsBox' (nice one Jan) with not a ROM ** Kernel manual in sight (not easy!) my Finder was born. ** Without Toby, this would be a program which did nothing except ** appear in the 'Tools' menu and read ToolTypes (not very useful)! ** ** However, that doesn't change the fact that Toby's version of Finder ** was seriously flawed. It handles memory VERY badly, the GUI sucks ** and I didn't write it ;) ** ** I would also like to thank my C programming lecturer, Dr. David ** Hamill who has cleaned up sections of this code with stunning ** speed (well, he should be good to be a lecturer!) ** ** Chris. */ #include "FinderV3Main.c"