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|
<?php
/**
* FusionForge PostgreSQL file parser
*
* Copyright 2002-2008, Roland Mas (Perl implementation)
* Copyright 2011, Roland Mas (PHP rewrite)
*
* This file is part of FusionForge. FusionForge is free software;
* you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software
* Foundation; either version 2 of the Licence, or (at your option)
* any later version.
*
* FusionForge is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with FusionForge; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
function get_next_line($f) {
$l = fgets($f);
if ($l === false) {
return false;
}
$l = rtrim($l, "\n\r");
return $l;
}
define ('GREEN', "\033[01;32m" );
define ('NORMAL', "\033[00m" );
define ('RED', "\033[01;31m" );
function parse_sql_file($filename) {
$f = fopen($filename, 'r');
if (!$f) {
error_log("$filename not found");
return false;
}
$states = array ('INIT' => 0,
'SCAN' => 1,
'SQL_SCAN' => 2,
'IN_SQL' => 3,
'END_SQL' => 4,
'QUOTE_SCAN' => 5,
'IN_QUOTE' => 6,
'START_COPY' => 7,
'IN_COPY' => 8,
'ERROR' => 9,
'IN_COMMENT' => 10,
'IN_SQL_COMMENT' => 11,
'IN_DOLDOL' => 12,
'DONE' => 999) ;
$names = array_flip($states);
$state = $states['INIT'];
$par_level = 0;
$com_level = 0;
$doldolstack = array();
$l = '';
$sql = '';
$chunk = '';
$rest = '';
$sql_list = array();
$copy_table = '';
$copy_rest = '';
$copy_data = array();
$copy_data_tmp = array();
$copy_field = '';
while ($state != $states['DONE']) {
// error_log("STATE_LOOP: state=$names[$state], l=".RED.$l.NORMAL.", chunk=".RED.$chunk.NORMAL.", rest=".RED.$rest.NORMAL);
// error_log(RED."<".GREEN.$sql.RED.">".NORMAL);
$matches = array();
switch ($state) {
case $states['INIT']:
// error_log('INIT');
$l = get_next_line($f);
if ($l === false) {
$state = $states['DONE'];
continue;
}
$state = $states['SCAN'];
break; // End of INIT
case $states['SCAN']:
// error_log('SCAN');
if (($l == '') || preg_match('/^\s*$/', $l) || preg_match('/^\s*--/', $l)) {
$l = get_next_line($f);
if ($l === false) {
$state = $states['DONE'];
continue;
}
continue;
} elseif (preg_match('/\s*copy\s+\"[\w_]+\"\s*(\([\w, "]+\))?\s*from\s+stdin\s*;/i', $l)
|| preg_match('/\s*copy\s+[\w_]+\s*(\([\w, "]+\))?\s*from\s+stdin\s*;/i', $l)) {
$state = $states['START_COPY'];
continue;
} else {
$sql = '';
$state = $states['SQL_SCAN'];
continue;
}
break; // End of SCAN
case $states['IN_COMMENT']:
// error_log('IN_COMMENT');
if (($l == '') || preg_match('/^\s*$/', $l)) {
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a comment");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_COMMENT'];
continue;
} elseif (preg_match(',\*/,', $l) || preg_match(',/\*,', $l)) {
$l = preg_replace(',.*?((/\*)|(\*/)),', '$1', $l, 1);
$chunk = substr($l,0,2);
$rest = substr($l,2);
if ($chunk == '/*') {
$com_level += 1;
} else {
$com_level -= 1;
}
if ($com_level == 0) {
$state = $states['SQL_SCAN'];
continue;
} else {
$state = $states['IN_COMMENT'];
continue;
}
} else {
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a comment");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_COMMENT'];
continue;
}
break; // End of IN_COMMENT
case $states['IN_SQL_COMMENT']:
// error_log('IN_SQL_COMMENT');
if (($rest == '') || preg_match('/^\s*$/')) {
$rest = get_next_line($f);
if ($rest === false) {
error_log("End of file reached during a comment");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_SQL_COMMENT'];
continue;
} elseif (preg_match(',\*/,', $rest) || preg_match(',/\*,', $rest)) {
$rest = preg_replace(',.*?((/\*)|(\*/)),', '$1', $l, 1);
$chunk = substr($rest,0,2);
$rest = substr($rest,2);
if ($chunk == '/*') {
$com_level += 1;
} else {
$com_level -= 1;
}
if ($com_level == 0) {
$state = $states['IN_SQL'];
continue;
} else {
$state = $states['IN_SQL_COMMENT'];
continue;
}
} else {
$rest = get_next_line($f);
if ($rest === false) {
error_log("End of file reached during a comment");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_SQL_COMMENT'];
continue;
}
break; // End of IN_SQL_COMMENT
case $states['SQL_SCAN']:
// error_log('SQL_SCAN');
if (($l == '') || preg_match('/^\s*$/', $l) || preg_match('/^--/', $l)) {
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during an SQL statement");
$state = $states['ERROR'];
continue;
}
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match(',^\s*/\*,', $l)) {
$l = preg_replace(',^\s*/\*,','',$l, 1);
$com_level = 1;
$state = $states['IN_COMMENT'];
continue;
} elseif (preg_match(',^(.*?)\$([\w]*)\$,', $l, $matches)) {
$sql .= $matches[1].'$'.$matches[2].'$';
array_push($doldolstack,$matches[2]);
$l = preg_replace(',^(.*?)\$[\w]*\$,','',$l, 1);
$state = $states['IN_DOLDOL'];
continue;
} else {
preg_match(',^([^()\';-]*)(.*),', $l, $matches);
$chunk = $matches[1];
$rest = $matches[2];
$sql .= $chunk;
$state = $states['IN_SQL'];
continue;
}
break; // End of SQL_SCAN
case $states['IN_SQL']:
// error_log('IN_SQL');
if (preg_match(',^\s*/\*,',$rest)) {
$rest = preg_replace(',^\s*/\*,','',$rest, 1);
$com_level = 1;
$state = $states['IN_SQL_COMMENT'];
continue;
} elseif (preg_match('/^\(/', $rest)) {
$par_level += 1;
$sql .= '(';
$rest = substr($rest, 1);
$l = $rest;
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match('/^\)/', $rest) && $par_level > 0) {
$par_level -= 1;
$sql .= ')';
$rest = substr($rest, 1);
$l = $rest;
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match('/^\)/', $rest)) {
error_log("Detected ')' without any matching '('");
$state = $states['ERROR'];
continue;
} elseif (preg_match('/^--/', $rest)) {
$rest = '';
$l = $rest;
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match('/^-/', $rest)) {
$sql .= '-';
$rest = substr($rest, 1);
$l = $rest;
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match('/^;/', $rest) && ($par_level == 0)) {
$sql .= ';';
$rest = substr($rest, 1);
$state = $states['END_SQL'];
continue;
} elseif (preg_match('/^;/', $rest)) {
error_log("Detected ';' within a parenthesis");
$state = $states['ERROR'];
continue;
} elseif ($rest == '') {
$l = $rest;
$sql .= ' ';
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match("/^\\'/", $rest)) {
$oldrest = $rest;
$sql .= "'";
$rest = substr($rest, 1);
$l = $rest;
$state = $states['IN_QUOTE'];
continue;
} else {
error_log("Unknown event in IN_SQL state");
$state = $states['ERROR'];
continue;
}
break; // End of IN_SQL
case $states['END_SQL']:
// error_log('END_SQL');
if (preg_match('/^\s*$/', $sql)) {
$sql = '';
$l = $rest;
$state = $states['SCAN'];
continue;
} else {
array_push($sql_list, $sql);
// error_log(RED."---->".$sql.NORMAL);
$sql = '';
$l = $rest;
$state = $states['SCAN'];
continue;
}
break; // End of END_SQL
case $states['QUOTE_SCAN']:
// error_log('QUOTE_SCAN');
if ($rest == '') {
$sql .= "\n";
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a quoted string");
$state = $states['ERROR'];
continue;
}
$rest = $l;
$state = $states['QUOTE_SCAN'];
continue;
} else {
preg_match("/^([^\\\']*)(.*)/", $l, $matches);
$chunk = $matches[1];
$rest = $matches[2];
$sql .= $chunk;
$state = $states['IN_QUOTE'];
continue;
}
break; // End of QUOTE_SCAN
case $states['IN_QUOTE']:
// error_log('IN_QUOTE');
if (preg_match("/^'/", $rest)) {
$sql .= "'";
$rest = substr($rest, 1);
$l = $rest;
$state = $states['SQL_SCAN'];
continue;
} elseif (preg_match("/^\\\'/", $rest)) {
$sql .= "''";
$rest = substr($rest, 2);
$state = $states['IN_QUOTE'];
continue;
} elseif (preg_match("/^\\\[^\\\]/", $rest)) {
$sql .= '\\';
$rest = substr($rest, 1);
$state = $states['IN_QUOTE'];
continue;
} elseif (preg_match('/^\\\$/', $rest)) {
$sql .= "\n";
$rest = substr($rest, 1);
$state = $states['IN_QUOTE'];
continue;
} else {
$l = $rest;
$state = $states['QUOTE_SCAN'];
continue;
}
break; // End of IN_QUOTE
case $states['IN_DOLDOL']:
// error_log('IN_DOLDOL');
$cur = $doldolstack[0];
if (preg_match(",^(.*?)\\$([\w]*)\\$,", $l, $matches)) {
$sql .= $matches[1].'$'.$matches[2].'$';
$found = $matches[2];
if ($found == $cur) {
array_pop($doldolstack);
if (count($doldolstack) > 0) {
$state = $states['IN_DOLDOL'];
continue;
} else {
$rest = preg_replace(",^.*?\\$[\w]*\\$,",'',$l, 1);
$l = preg_replace(",^.*?\\\$[\w]*\\\$,",'',$l,1);
$state = $states['SQL_SCAN'];
continue;
}
} else {
array_push($doldolstack, $found);
$state = $states['IN_DOLDOL'];
continue;
}
$l = preg_replace(",^.*?\\\$[\w]*\\\$,",'',$l,1);
$state = $states['IN_DOLDOL'];
continue;
} else {
$sql .= $l."\n";
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a dollar-quoted string");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_DOLDOL'];
continue;
}
break; // End of IN_DOLDOL
case $states['START_COPY']:
// error_log('START_COPY');
if (preg_match('/\s*copy\s+\"([\w_]+)\"\s*(\\([\w, "]+\\))?\s*from\s+stdin\s*;(.*)/i', $l, $matches)) {
$copy_table = $matches[1];
$copy_field_list = trim($matches[2]);
if ($copy_field_list != '') {
$copy_field_list = ' '.$copy_field_list;
}
$copy_rest = $matches[3];
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a COPY statement");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_COPY'];
continue;
} elseif (preg_match('/\s*copy\s+([\w_]+)\s*(\\([\w, "]+\\))?\s*from\s+stdin\s*;(.*)/i', $l, $matches)) {
$copy_table = $matches[1];
$copy_field_list = trim($matches[2]);
if ($copy_field_list != '') {
$copy_field_list = ' '.$copy_field_list;
}
$copy_rest = $matches[3];
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a COPY statement");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_COPY'];
continue;
} else {
error_log("Unknown event in START_COPY state");
continue;
}
break; // End of START_COPY
case $states['IN_COPY']:
// error_log('IN_COPY');
if ($l == '\.') {
$l = $copy_rest;
$state = $states['SCAN'];
continue;
} else {
$copy_data = array();
$copy_data_tmp = explode ("\t", $l);
foreach ($copy_data_tmp as $copy_field) {
if ($copy_field == '\N') {
$copy_field = 'NULL';
} else {
$copy_field = preg_replace('/\'/','\'\'', $copy_field);
$copy_field = "'".$copy_field."'";
}
array_push($copy_data, $copy_field);
}
$sql = "INSERT INTO \"$copy_table\"$copy_field_list VALUES (";
$sql .= implode (', ', $copy_data);
$sql .= ")";
array_push($sql_list, $sql);
// error_log(RED."---->".$sql.NORMAL);
$l = get_next_line($f);
if ($l === false) {
error_log("End of file reached during a COPY statement");
$state = $states['ERROR'];
continue;
}
$state = $states['IN_COPY'];
continue;
}
break; // End of IN_COPY
case $states['DONE']:
// error_log('DONE');
// We're done.
break; // End of DONE
case $states['ERROR']:
// error_log('ERROR');
error_log("Reached the ERROR state, dying. State machine is buggy.");
exit (1);
break; // End of ERROR
default:
error_log("State machine went to an unknown state, redirecting to ERROR");
$state = $states['ERROR'];
break;
}
// error_log("State=$names[$state] after switch");
}
fclose($f);
return $sql_list;
}
// Local Variables:
// mode: php
// c-file-style: "bsd"
// End:
|
