Free disk space: what changed
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| 1 | + | It is not obvious how to get the free space, in a directory. Here is working code from the [[CudaText]] project. | |
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| 3 | + | ``` Pascal | |
| 3 | 4 | uses SysUtils; | |
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| 6 | + | function AppDiskGetFreeSpace(const fn: string): Int64; | |
| 7 | + | begin | |
| 8 | + | {$ifdef linux} | |
| 9 | + | //this crashes on FreeBSD 12 x64 | |
| 10 | + | exit(SysUtils.DiskFree(SysUtils.AddDisk(ExtractFileDir(fn)))); | |
| 11 | + | {$endif} | |
| 12 | + | ||
| 13 | + | {$ifdef windows} | |
| 14 | + | exit(SysUtils.DiskFree(SysUtils.GetDriveIDFromLetter(ExtractFileDrive(fn)))); | |
| 15 | + | {$endif} | |
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| 17 | + | //cannot detect | |
| 18 | + | exit(-1); | |
| 19 | + | end; | |
| 19 | 20 | ``` | |
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| 22 | + | The "fn" parameter should be any filename in the needed directory. E.g. if we need to get free space in the directory '/home/user/media', pass parameter fn as '/home/user/media/a'. | |
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| 24 | + | Note: code does not support Unixes other than Linux, because real tests show, that code for "\$ifdef linux" part is crashing on FreeBSD 12 x64. Under FPC 3.2-fixes. [Gitlab issue](https://gitlab.com/freepascal.org/fpc/source/-/issues/39428). | |
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| 25 | 26 | --- | |
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| 27 | + | *From the Free Pascal wiki, page "Free disk space", as it stood on 2022-01-30 after a change by Alextp, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* | |
| 28 | + | Category: Code Snippets |