I get an error on line 17 "no such table: image" so i looked at the DB, and there is a table name 'image'. It's structured thusly: CREATE TABLE image (a int, b int, c int, d int, tileset int, retrieved int, current bool, etag text, size int, data blob, UNIQUE(a, b, c, d) ON CONFLICT REPLACE); CREATE UNIQUE INDEX index_abcd on image (a, b, c, d); CREATE INDEX index_tileset on image (tileset); CREATE INDEX index_retrieved_tileset on image (retrieved, tileset);

So we open up the table image, and dump the field data, right? 

#!perl
use strict;
use DBI;

my $database  = 'MapTiles.sqlitedb';
my $tablename = 'image';

# open db
my $dbh = open_db($database);
my $imgfolder = 'maptiles-output';
if (! -d $imgfolder){
  mkdir($imgfolder, 0755) or die "$!";
}

# select data
my $sql = 'SELECT data from '.$tablename;
my $sth = $dbh->prepare($sql);
$sth->execute();

# recreate files
while (my ($zoom, $x, $y, $flags, $length, $data) = $sth->fetchrow_arr
+ay){
  my $filename = "$imgfolder/$x,$y\@$zoom.png";
  print "creating $filename\n";
  open OUT,'>:raw',$filename or die "$filename : $!";
  print OUT $data;
  close OUT;
}

# open db
sub open_db {
  my $dbfile = shift;
  my $dbh = DBI->connect(         
    "dbi:SQLite:dbname = $dbfile", 
    "", "", { RaiseError => 1 }       
    ) or die $DBI::errstr;
  return $dbh;
}

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In reply to Re^4: help figuring out what a section of script does by michaelsingleton
in thread help figuring out what a section of script does by michaelsingleton

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