Expanding command line wildcards and Icon Drag and Drop

Wildcard Expansion:
How do you handle command line wildcards such as #? when writing a command line tool in C. I want my tool to take action on all files passed by the command line; ie: tool.exe #?

Icon Drag and Drop
How do I write code to handle files dragged onto my tool's icon. For example, when I drag a file(s) from workbench onto my tools icon I want to know how to get the dragged icon's filename(s).

I'm using SAS/C.

Any help/code examples would be appreciated.

[thomas]

How do you handle command line wildcards such as #? when writing a command line tool in C.

See ParsePattern/NoCase and MatchPattern/NoCase in dos.library. In 1.3 and below you can use arp.library for that.

How do I write code to handle files dragged onto my tool's icon.

See AddAppIcon/AddAppWindow/AddAppMenu in workbench.library. In 1.3 and below there is no way to do this.


Come back when you've read the autodocs and still are suck.

I've got the argument handling finished. Now I'm trying to do some directory recursion using exnext.

I can't seem to get it right. Does anyone have some sample code for traversing directory trees recursively?

[thomas]

#include <proto/dos.h>

char indent[] = "                                                                                ";


BOOL read_dir (ULONG level,char *path,BOOL recursive)

{
BOOL success = FALSE;
BPTR lock;
struct FileInfoBlock *fib;
BPTR oldcd;

if (fib = AllocDosObject (DOS_FIB,TAG_END))
	{
	if (lock = Lock (path,SHARED_LOCK))
		{
		if (Examine (lock,fib))	
			{
			success = TRUE;

			if (fib->fib_DirEntryType > 0)
				{
				if (level == 0)
					Printf ("Contents of directory %s\n",fib->fib_FileName);

				oldcd = CurrentDir (lock);
				while (ExNext (lock,fib))
					{
					if (fib->fib_DirEntryType > 0)
						{
						Printf ("%s   (Dir) %s\n",&indent[80-2*level],fib->fib_FileName);
						if (recursive)
							read_dir (level+1,fib->fib_FileName,recursive);
						}
					else
						Printf ("%s%8lu %s\n",&indent[80-2*level],fib->fib_Size,fib->fib_FileName);
					}
				CurrentDir (oldcd);
				}
			else
				Printf ("%s%8lu %s\n",&indent[80-2*level],fib->fib_Size,fib->fib_FileName);
			}

		UnLock (lock);
		}
	FreeDosObject (DOS_FIB,fib);
	}

return (success);
}



int main (void)

{
struct RDArgs *rdargs;
struct {
	char *path;
	long all;
	} args = {"",0};
int rc;

rdargs = ReadArgs ("PATH,ALL/S",(LONG *)&args,NULL);
if (!rdargs)
	{
	PrintFault (IoErr(),"error in arguments");
	return (RETURN_ERROR);
	}

rc = RETURN_FAIL;

if (read_dir (0,args.path,args.all))
	rc = RETURN_OK;

FreeArgs (rdargs);

return (rc);
}

[thomas]

By the way, as you were asking about wildcards before, you probably want to combine directory reading with wildcard resolution. For this the examine/exnext approach with manual recursion is not the best idea. You'd better use MatchFirst/MatchNext/MatchEnd. This works similar to the List shell command.

Here is an example. It's basically the example from the OS 4.0 SDK, adjusted for OS 3.x:

#include <proto/exec.h>
#include <proto/dos.h>
#include <dos/dostags.h>
#include <dos/dosasl.h>


int main (void)

{
struct RDArgs *rdargs;
struct {
	char *path;
	long all;
	} args = {"",0};
struct AnchorPath *ap;
LONG error;
LONG level,i;

rdargs = ReadArgs ("PATH,ALL/S",(LONG *)&args,NULL);
if (!rdargs)
	{
	PrintFault (IoErr(),NULL);
	return (RETURN_FAIL);
	}

if (ap = AllocVec (sizeof(struct AnchorPath) + 1024,MEMF_CLEAR))
	{
	ap->ap_BreakBits = SIGBREAKF_CTRL_C;
	ap->ap_Strlen = 1024;
	}

level = 0;

error = MatchFirst (args.path,ap);
if (error == 0 && ap->ap_Info.fib_DirEntryType >= 0)
	ap->ap_Flags |= APF_DODIR;

while (error == 0)
	{
	if (ap->ap_Flags & APF_DIDDIR)
		{
		/* Leaving a directory entered below (APF_DODIR) */
		level--;
		ap->ap_Flags &= ~APF_DIDDIR;
		}
	else
		{
		/* Soft linked objects are returned by the scanner
		   but they need special treatment; we are merely
		   ignoring them here in order to keep this
		   example simple */
		if (ap->ap_Info.fib_DirEntryType != ST_SOFTLINK)
			{
			/* Provide for some indentation */
			for (i = 0 ; i < level ; i++)
				Printf (" ",0);

			Printf ("%s%s\n",ap->ap_Buf,
				(ap->ap_Info.fib_DirEntryType < 0) ? "" : " (Dir)");

			/* If this is a directory, enter it */
			if (ap->ap_Info.fib_DirEntryType >= 0 && args.all)
				{
				ap->ap_Flags |= APF_DODIR;
				level++;
				}
			}
		}

	error = MatchNext (ap);
	}

MatchEnd (ap);

FreeVec (ap);

FreeArgs (rdargs);

return (RETURN_OK);
}

Thank you so much!

Do you know of any good websites with examples for Amiga coding?