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glob command - Patch for extended functionality
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Description:
This is the proposal of an extension to the glob command:
Negation of the -types specifiers
b c d f l p s r w x hidden readonly
With this additional specifiers it is possible to easily
answer questions like the following:
Give me a list of all entries, which are not directories:
-types !d
Give me a list of all entries, which are not directories and not hidden:
-types {!d !hidden}
Give me a list of all directories, which are not hidden:
-types {d !hidden}
These are typical questions when writing a file manager like application.
You are able to manage this with current Tcl commands,
but if the number of entries in a directory is high, it tends to get slow.
Another additional change I made is to increase performance on FAT
file systems.
On FAT file systems using the -types option is not usable,
if you have more than appr. 1000 directory entries.
This is due to the fact, that the -types option implies a
call to the stat (TclpStat) command for each matching directory entry,
which is a performance killer on FAT.
But some file attributes are already known from function
findNextFileProc: IsDirectory, IsHidden, IsReadOnly.
So the above noted queries are quite fast on FAT, too.
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Notes:
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The necessary changes can be applied as a patch against Tcl8.3.2 and Tcl8.3.3.
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Tested on Windows98, Linux 2.4 and SGI IRIX 6.5.
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I have adopted the Mac sources, too, but do not have the chance to test these.
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Downloads:
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Description |
| globPatch.zip |
Patched source files based on Tcl version 8.3.2 and 8.3.3 |
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Overview
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