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* Examples on Large Objects
@ 1994-09-06 17:45 Raj Vadakkencherry <raj@CS.UCLA.EDU>
0 siblings, 1 reply; 2+ messages in thread
From: Raj Vadakkencherry @ 1994-09-06 17:45 UTC (permalink / raw)
To: legacy
Hi,
Do you have source code examples for creating and using large objects
from Unix files ? The ...src/bin/fsutils directory contains only an example
for inversion large object.
Raj.
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* Re: Examples on Large Objects
@ 1994-09-06 18:35 jimbo@crseo.ucsb.edu
parent: Raj Vadakkencherry <raj@CS.UCLA.EDU>
0 siblings, 0 replies; 2+ messages in thread
From: jimbo@crseo.ucsb.edu @ 1994-09-06 18:35 UTC (permalink / raw)
To: Raj Vadakkencherry <raj@CS.UCLA.EDU>; +Cc: legacy; jimbo@crseo.ucsb.edu
>Hi,
>
> Do you have source code examples for creating and using large objects
> from Unix files ? The ...src/bin/fsutils directory contains only an example
> for inversion large object.
Hello,
If you're familiar with Tcl you can use libpqtcl to manipulate Unix
large objects in a script. Here's an example:
#
# test libpqtcl's large object interface
#
# copy /etc/motd to a new large object
set lo [PQlo open junk w+]
set fp [open /etc/motd]
PQlo copyin $fp $lo
close $fp
# copy the data back out to stdout
PQlo seek $lo 0
PQlo copyout $lo stdout
# now stat the large object and print the statbuf array to stdout
PQlo stat junk statBuf
parray statBuf
# dump a listing of files at the LO root to stdout
puts stdout [PQlo glob *]
# make a new directory and move the large object there
PQlo mkdir mydir
PQlo cd mydir
PQlo rename /junk /mydir/junk
# delete the large object and directory
PQlo unlink junk
PQlo cd /
PQlo rmdir mydir
Libpqtcl can be included in any Tcl or Tk application. You can get it
at:
ftp://ftp.crseo.ucsb.edu/pub/libpqtcl.tar.Z
-Jim
__________________________________________________________
Jim Davidson | jimbo@crseo.ucsb.edu
CSL / Center for Remote Sensing | jimbo@sbitp.bitnet
University of California | Phone (805)893-8475
Santa Barbara, CA 93106 | Fax -2578
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1994-09-06 17:45 Examples on Large Objects Raj Vadakkencherry <raj@CS.UCLA.EDU>
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