Windows x/extract Creates Subfolders When Using -longpath #86

EpicGazel · 2023-12-13T16:08:14Z

Unlike how the e command extracts (or at least claims to) properly with longpath on Windows, the x command does not when using -longpath. Instead, subfolders are created starting after the path specified in -to. Thus, extracting G:\.minecraft\screenshots -to "B:\screenshots" goes to "B:\screenshots\G_\.minecraft\screenshots" instead of the expected "B:\screenshots".

Normal extract without -longpath:

> zpaqfranz.exe x .\g_drive.zpaq "G:\.minecraft\screenshots" -to "B:\normal\screenshots"
zpaqfranz v58.11z-JIT-GUI-L,HW BLAKE3,SHA1/2,SFX64 v55.1,(2023-11-10)
franz:-hw
./g_drive.zpaq:
4 versions, 99.499 files, 21.171.493.883 bytes (19.72 GB)
Long filenames (>255)         12 *** WARNING *** (suggest -longpath or -fix255 or -flat)
Extract 28.880.896 bytes (27.54 MB) in 39 files (1 folders) / 16 T
        28.69% 00:00:00  (   7.90 MB)=>(  27.54 MB)    7.90 MB/sec

0.500 seconds (000:00:00) (all OK)

> tree /F B:\normal
Folder PATH listing for volume Backup
Volume serial number is C264-09CB
B:\NORMAL
└───screenshots
        2019-05-09_21.57.51.png
        2019-05-09_21.58.07.png
        2019-05-16_20.24.57.png
        2019-05-16_22.16.22.png
        2019-05-16_22.36.01.png
        2019-05-16_22.36.02.png
        2019-10-06_22.15.05.png
        2019-10-12_17.00.21.png
        2019-10-12_19.26.00.png
        2019-10-12_19.26.07.png
        2019-10-12_19.26.11.png
        2019-10-12_19.26.29.png
        2019-10-12_19.26.33.png
        2019-10-13_01.48.38.png
        2019-10-13_01.56.28.png
        2020-06-07_06.10.02.png
        2020-06-07_06.16.05.png
        2020-06-07_06.16.08.png
        2020-06-07_06.17.13.png
        2020-06-07_06.29.43.png
        2020-06-07_09.46.08.png
        2020-06-07_09.46.11.png
        2020-06-19_13.31.33.png
        2020-06-23_12.53.30.png
        2020-06-23_13.03.37.png
        2020-07-01_02.41.13.png
        2020-07-01_02.43.33.png
        2020-07-01_03.02.32.png
        2020-07-01_03.03.14.png
        2020-07-01_03.05.56.png
        2020-07-01_03.30.33.png
        2020-07-01_05.04.23.png
        2020-07-01_06.33.33.png
        2020-07-01_06.34.51.png
        2020-07-01_06.34.58.png
        2020-07-01_06.35.00.png
        2020-11-12_05.26.56.png
        2020-11-13_08.26.09.png
        2020-11-13_08.26.26.png

-longpath extract:

> zpaqfranz.exe x .\g_drive.zpaq "G:\.minecraft\screenshots" -to "B:\longpath\screenshots" -longpath
zpaqfranz v58.11z-JIT-GUI-L,HW BLAKE3,SHA1/2,SFX64 v55.1,(2023-11-10)
franz:-hw -longpath
31876: INFO: setting Windows' long filenames
./g_drive.zpaq:
4 versions, 99.499 files, 21.171.493.883 bytes (19.72 GB)
Extract 28.880.896 bytes (27.54 MB) in 39 files (1 folders) / 16 T
        28.69% 00:00:00  (   7.90 MB)=>(  27.54 MB)    7.90 MB/sec

0.516 seconds (000:00:00) (all OK)

> tree /F B:\longpath
Folder PATH listing for volume Backup
Volume serial number is C264-09CB
B:\LONGPATH
└───screenshots
    └───G_
        └───.minecraft
            └───screenshots
                    2019-05-09_21.57.51.png
                    2019-05-09_21.58.07.png
                    2019-05-16_20.24.57.png
                    2019-05-16_22.16.22.png
                    2019-05-16_22.36.01.png
                    2019-05-16_22.36.02.png
                    2019-10-06_22.15.05.png
                    2019-10-12_17.00.21.png
                    2019-10-12_19.26.00.png
                    2019-10-12_19.26.07.png
                    2019-10-12_19.26.11.png
                    2019-10-12_19.26.29.png
                    2019-10-12_19.26.33.png
                    2019-10-13_01.48.38.png
                    2019-10-13_01.56.28.png
                    2020-06-07_06.10.02.png
                    2020-06-07_06.16.05.png
                    2020-06-07_06.16.08.png
                    2020-06-07_06.17.13.png
                    2020-06-07_06.29.43.png
                    2020-06-07_09.46.08.png
                    2020-06-07_09.46.11.png
                    2020-06-19_13.31.33.png
                    2020-06-23_12.53.30.png
                    2020-06-23_13.03.37.png
                    2020-07-01_02.41.13.png
                    2020-07-01_02.43.33.png
                    2020-07-01_03.02.32.png
                    2020-07-01_03.03.14.png
                    2020-07-01_03.05.56.png
                    2020-07-01_03.30.33.png
                    2020-07-01_05.04.23.png
                    2020-07-01_06.33.33.png
                    2020-07-01_06.34.51.png
                    2020-07-01_06.34.58.png
                    2020-07-01_06.35.00.png
                    2020-11-12_05.26.56.png
                    2020-11-13_08.26.09.png
                    2020-11-13_08.26.26.png

The text was updated successfully, but these errors were encountered:

fcorbelli · 2023-12-13T16:47:38Z

This is expected behavior, due to the -all option, lan shares (aka: \pippo\something) and *nix /, and multiple .

you can see with -debug switch, and 25787 tag

when running on -longpath the filenames are "sanitized" this way

if (name.size()>2) // fix for *nix relative paths
	if (name[0]=='.')
		if (name[1]=='/')
			name[0]='_';
myreplaceall(name,"/./","/_/");
myreplaceall(name,"/../","/__/");
if (iswindowsunc(name))
{
	replace(name,"//","__");
	replace(name,"/","_");
}
if (name.size()>2)
	if (isalpha(name[0]))
		if (name[1]==':')
			if (name[2]=='/')
				name[1]='_'; /// THIS IS YOUR CASE

string finale=includetrailingbackslash(tofiles[0])+name;

fcorbelli · 2023-12-13T17:11:43Z

Finally you can use the -find to extract where... you want

Suppose you have the z:\1.zpaq with inside something like that

- 2023-12-12 13:40:23                   0 DA    c:/zpaqfranz/
- 2023-10-26 20:00:35                   0 D     c:/zpaqfranz/.github/
- 2023-10-26 20:00:35                   0 D     c:/zpaqfranz/.github/workflows/
- 2023-03-04 23:34:50                 844 A     c:/zpaqfranz/.github/workflows/github_actions_build.yml
- 2023-03-04 23:34:50                 427 A     c:/zpaqfranz/.gitignore
- 2023-03-04 23:34:50              12.618 A     c:/zpaqfranz/.travis.yml
- 2021-04-15 11:31:59                  52 A     c:/zpaqfranz/0.bat
- 2023-10-26 20:00:35                   0 D     c:/zpaqfranz/00000001/
- 2022-09-08 11:25:30                 798 A     c:/zpaqfranz/00000001/1.txt
- 2022-08-25 16:50:14              29.581 A     c:/zpaqfranz/00000001/3.txt
- 2022-08-25 16:50:23              22.307 A     c:/zpaqfranz/00000001/4.txt
- 2022-08-12 16:33:28              13.050 A     c:/zpaqfranz/00000001/cpuz.txt
- 2022-08-14 14:42:05                 153 A     c:/zpaqfranz/00000001/lavoretti.txt

Note the stored path (c:/zpaqfranz/ in this example)
Extract with -longpath in "z:\default"

zpaqfranz x z:\1.zpaq -to z:\default -longpath

And you'll get this

C:\zpaqfranz>tree z:\default
Elenco del percorso delle cartelle per il volume RamDisk
Numero di serie del volume: 00000073-2423:F92F
Z:\DEFAULT
└───c_
    └───zpaqfranz
        ├───.github
        │   └───workflows
        ├───00000001
        ├───00000002
        ├───00000003

Now "cut" (because there is no -replace "something") the stored path (c:/zpaqfranz/ in this example)

zpaqfranz x z:\1.zpaq -to z:\your -longpath -find "c:/zpaqfranz/"

And the result

Z:\YOUR
├───.github
│   └───workflows
├───00000001
├───00000002
├───00000003
(...)

Remember that the paths stored in zpaq can originate from different systems, here are the two switches -find and -replace to manipulate paths.

You can understand the problem even better if you use the -all switch

zpaqfranz x z:\1.zpaq -to z:\all_default -all -longpath

become

Z:\ALL_DEFAULT
└───0001
    └───c
        └───zpaqfranz
            ├───.github
            │   └───workflows
            ├───00000001
            ├───00000002
            ├───00000003

Hope this solves your problem

EpicGazel · 2023-12-14T02:38:27Z

Thank you for your help!
I found it necessary to still include the original path to be extracted but this solved my issue.

> zpaqfranz x .\g_drive.zpaq "G:\.minecraft\screenshots\" -to "B:\screenshots\" -longpath -find "G:\.minecraft\screenshots\"
zpaqfranz v58.11z-JIT-GUI-L,HW BLAKE3,SHA1/2,SFX64 v55.1,(2023-11-10)
franz:-find                 <<G:/.minecraft/screenshots/>>
franz:-hw -longpath
31876: INFO: setting Windows' long filenames
./g_drive.zpaq:
4 versions, 99.499 files, 21.171.493.883 bytes (19.72 GB)
00000001 ?existing files skipped (-force overwrites).
Extract 28.880.896 bytes (27.54 MB) in 39 files (1 folders) / 16 T
        26.00% 00:00:00  (   7.16 MB)=>(  27.54 MB)    7.16 MB/sec

0.500 seconds (000:00:00) (all OK)

> tree /F B:\screenshots\
Folder PATH listing for volume Backup
Volume serial number is C264-09CB
B:\SCREENSHOTS
    2019-05-09_21.57.51.png
    2019-05-09_21.58.07.png
    2019-05-16_20.24.57.png
    2019-05-16_22.16.22.png
    2019-05-16_22.36.01.png
    2019-05-16_22.36.02.png
    2019-10-06_22.15.05.png
    2019-10-12_17.00.21.png
    2019-10-12_19.26.00.png
    2019-10-12_19.26.07.png
    2019-10-12_19.26.11.png
    2019-10-12_19.26.29.png
    2019-10-12_19.26.33.png
    2019-10-13_01.48.38.png
    2019-10-13_01.56.28.png
    2020-06-07_06.10.02.png
    2020-06-07_06.16.05.png
    2020-06-07_06.16.08.png
    2020-06-07_06.17.13.png
    2020-06-07_06.29.43.png
    2020-06-07_09.46.08.png
    2020-06-07_09.46.11.png
    2020-06-19_13.31.33.png
    2020-06-23_12.53.30.png
    2020-06-23_13.03.37.png
    2020-07-01_02.41.13.png
    2020-07-01_02.43.33.png
    2020-07-01_03.02.32.png
    2020-07-01_03.03.14.png
    2020-07-01_03.05.56.png
    2020-07-01_03.30.33.png
    2020-07-01_05.04.23.png
    2020-07-01_06.33.33.png
    2020-07-01_06.34.51.png
    2020-07-01_06.34.58.png
    2020-07-01_06.35.00.png
    2020-11-12_05.26.56.png
    2020-11-13_08.26.09.png
    2020-11-13_08.26.26.png

No subfolders exist

And for anyone whose come here in regards to a single file extraction, try:
zpaqfranz x .\g_drive.zpaq "G:\.minecraft\screenshots\2019-05-09_21.57.51.png" -to "B:\screenshots" -longpath -find "G:\.minecraft\screenshots\"

Pay particular attention to drop the trailing "\" on the -to path in addition to only using -find the on the parent directory, otherwise it won't work.

fcorbelli · 2023-12-14T14:45:49Z

Two notes.

The first is-use the ". In general it is good and right, and basically necessary on Linux

The second, that I forgot to mention, is WHY
The problem lies in the possibility of having different unit paths
Suppose to get an archive with something like this insite

c:/zpaqfranz/pippo.txt (1KB)
e:/zpaqfranz/pippo.txt (2KB)

This is a perfectly "legit" zpaq
How to extract those two "pippo.txt" into single -to "z:\somewhere" ?

z:\somewhere\pippo.txt (1KB)
z:\somewhere\pippo.txt (2KB)

Not good
Same (even worse) problem with different versions

It is possible (and I have thought about it) to make an "intelligent" examiner who would behave differently depending on various circumstances (collisions or not)
There is still some vestige in the code
There are so many cases, though (including \\theserver\theshare\thefolder), and it starts to get really, really complicated to be reliable
That is, operating in the same way, predictably (for better or worse)
Then I make this decision

Finally, I note that this behayviour is DIFFERENT from zpaq's

Why -to does not work this way? For reasons of substitutability (almost) drop-in using -to zpaqfranz basically works like zpaq
Instead, using -longpath (a switch specific to my software) changes the logic, for the reasons specified above
On the other hand, if you write -longpath you are using zpaqfranz, not zpaq :)

Thanking you for the report, which allows me to give some useful information, I invite you, if you have not already done so, to put a github star and maybe a review on sourceforge
I would appreciate it.

EpicGazel closed this as completed Dec 14, 2023

fcorbelli reopened this Dec 14, 2023

fcorbelli closed this as completed Nov 3, 2024

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Windows x/extract Creates Subfolders When Using -longpath #86

Windows x/extract Creates Subfolders When Using -longpath #86

EpicGazel commented Dec 13, 2023

fcorbelli commented Dec 13, 2023

fcorbelli commented Dec 13, 2023

EpicGazel commented Dec 14, 2023 •

edited

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fcorbelli commented Dec 14, 2023

Windows x/extract Creates Subfolders When Using -longpath #86

Windows x/extract Creates Subfolders When Using -longpath #86

Comments

EpicGazel commented Dec 13, 2023

Normal extract without -longpath:

-longpath extract:

fcorbelli commented Dec 13, 2023

fcorbelli commented Dec 13, 2023

EpicGazel commented Dec 14, 2023 • edited Loading

fcorbelli commented Dec 14, 2023

EpicGazel commented Dec 14, 2023 •

edited

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