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#!/usr/local/bin/perl -w |
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|
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# PostgreSQL to InterBase dump file converter |
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# |
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# usage: |
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# cat pg_db_name | ./mysql2pgsql > interbase.sql |
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# |
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# Convert PostgresSQL database dump file to something readable by isql ! |
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|
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# 2000-08-30 DbP -- Dobrica Pavlinusic <dpavlin@rot13.org> |
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# based on mysql2pgsql |
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# |
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# Warning: bool datatype is converted to char(1) which will break |
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# your application if you tend to check true values with |
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# if ($foo) |
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# and not with |
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# if ($foo = 't') |
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# In data from InterBase it will always return true which is wrong! |
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# |
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|
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$create=0; # inside create table? |
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$table=""; |
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$triggers=""; # create triggers |
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|
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while(<>) { |
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chomp; |
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|
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next if (/^\\connect/); |
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|
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if ($create) { # are we inside create table? |
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|
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if (/DEFAULT nextval \( '"([^"]+)_seq"' \)/i) { |
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$trig=$col=$1; |
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$col=~s/(\w+)_([^_]+)/$1.$2/; |
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$triggers.=" |
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set term !! ; |
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create trigger ${trig}_trig for $table |
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before insert position 0 |
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as begin |
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$col = gen_id(${trig}_gen,1) ; |
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end !! |
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set term ; !! |
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"; |
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s/ DEFAULT nextval \( '"[^"]+"' \)//i; |
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} |
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s/DEFAULT bool/DEFAULT/i; |
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|
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# int(48...) -> int |
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s/\w*int\d+/ int/gi; |
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|
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# bool -> char(1) |
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if (/bool/i) { |
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s/\w*bool/ char(1)/gi; |
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print STDERR "Warning: bool emulated by char(1)\n\n"; |
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} |
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|
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# datetime -> timestamp |
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s/datetime/timestamp/gi; |
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|
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} else { # not inside create table |
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|
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if (/CREATE SEQUENCE "(\w+)_seq" start (\d+)/i) { |
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my ($gen,$start) = ($1,$2); |
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$sql.="create generator ${gen}_gen ;\n"; |
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$sql.="set generator ${gen}_gen to $start ;\n"; |
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next; |
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} |
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|
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# left-over from create sequnce |
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next if (/^SELECT nextval/i); |
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|
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# you will have to re-write functions manually! |
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if (/^CREATE FUNCTION/i) { |
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print STDERR "functions not supported: $_\n\n"; |
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next; |
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} |
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|
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# rule is usually a defined view |
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if (/^CREATE RULE/i) { |
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print STDERR "rules (views...) not supported: $_\n\n"; |
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next; |
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} |
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if (/COPY "([^"]+)" FROM stdin/i) { |
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my $table=$1; |
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my $line=<>; chomp $line; |
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while($line ne "\\.") { |
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$sql.="insert into \"$table\" values ("; |
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undef @newarr; |
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foreach $var (split(/\t/,$line)) { |
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if ($var eq "\\N") { |
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push @newarr,"null"; |
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} elsif ($var=~/^\d+$/ || $var=~/^\d+\.\d+$/) { |
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push @newarr,"$var"; |
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} elsif ($var=~/\w{3} (\w{3}) (\d+) (\d\d:\d\d:\d\d) (\d{4})/) { |
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# timestamp |
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push @newarr,"'$2-$1-$4 $3'"; |
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} else { |
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push @newarr,"'$var'"; |
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} |
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} |
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$sql.=join(",",@newarr).");\n"; |
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$line=<>; chomp $line; |
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} |
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next; |
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} |
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|
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if (/(CREATE \w*\s*INDEX "[^"]+" on "[^"]+")[^(]*\(([^\)]+)\)/i) { |
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my ($ind,$col) = ($1,$2); |
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$col=~s/" "[^"]+"/"/g; # nuke ops_name |
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$sql.="$ind ( $col );\n"; |
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next; |
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} |
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|
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} |
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|
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|
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$sql.="$_\n"; |
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|
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if (/CREATE TABLE "([^"]+)"/i) { |
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$table=$1 if (defined($1)); |
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$create++; |
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} |
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|
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while ($sql=~/;/) { |
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($dosql,$sql)=split(/;/,$sql,2); |
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$dosql.=";"; # nuked by split, put it back! |
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if ("$dosql" ne "") { |
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print "$dosql\n"; |
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$create=0; |
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} else { |
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print STDERR "empty sql!\n"; |
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} |
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} |
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|
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} |
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|
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print "$sql\n$triggers\n"; |
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|
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print "\n"; |
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