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Bzip2 compression

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git-svn-id: https://adminer.svn.sourceforge.net/svnroot/adminer/trunk@1036 7c3ca157-0c34-0410-bff1-cbf682f78f5c
This commit is contained in:
jakubvrana
2009-08-28 14:44:43 +00:00
parent 2f272b05e0
commit 702e949d30
4 changed files with 35 additions and 16 deletions
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32
adminer/include/export.inc.php
View File

@@ -127,39 +127,47 @@ function dump_data($table, $style, $select = "") {
$s = "\n($s)";
if (!$buffer) {
$buffer = $insert . $s;
} elseif (strlen($buffer) + 1 + strlen($s) < $max_packet) { // 1 - separator length
$buffer .= ",$s";
} else {
if (strlen($buffer) + 1 + strlen($s) < $max_packet) { // 1 - separator length
$buffer .= ",$s";
} else {
dump("$buffer;\n");
$buffer = $insert . $s;
}
$buffer .= ";\n";
dump($buffer);
$buffer = $insert . $s;
}
}
}
}
if ($_POST["format"] != "csv" && $style != "INSERT+UPDATE" && $buffer) {
dump("$buffer;\n");
$buffer .= ";\n";
dump($buffer);
}
}
}
}
function dump_headers($identifier, $multi_table = false) {
$compress = $_POST["compress"];
$filename = (strlen($identifier) ? friendly_url($identifier) : "dump");
$ext = ($_POST["format"] == "sql" ? "sql" : ($multi_table ? "tar" : "csv")); // multiple CSV packed to TAR
header("Content-Type: " . ($_POST["compress"] == "gz" ? "application/x-gzip" : ($ext == "tar" ? "application/x-tar" : ($ext == "sql" || $_POST["output"] != "file" ? "text/plain" : "text/csv")) . "; charset=utf-8"));
if ($_POST["output"] == "file" || $_POST["compress"]) {
header("Content-Disposition: attachment; filename=$filename.$ext" . ($_POST["compress"] == "gz" ? ".gz" : ""));
header("Content-Type: " .
($compress == "bz2" ? "application/x-bzip" :
($compress == "gz" ? "application/x-gzip" :
($ext == "tar" ? "application/x-tar" :
($ext == "sql" || $_POST["output"] != "file" ? "text/plain" : "text/csv") . "; charset=utf-8"
))));
if ($_POST["output"] == "file" || $compress) {
header("Content-Disposition: attachment; filename=$filename.$ext" . (ereg('[0-9a-z]', $compress) ? ".$compress" : ""));
}
return $ext;
}
$compress = array();
if (function_exists('gzencode')) {
$compress['gz'] = 'GZIP';
$compress['gz'] = 'gzip';
}
if (function_exists('bzcompress')) {
$compress['bz2'] = 'bzip2';
}
// bzcompress can't be called repetitively, bzopen requires temporary file
// ZipArchive requires temporary file, ZIP can be created by gzcompress - see PEAR File_Archive
$dump_output = "<select name='output'>" . optionlist(array('text' => lang('open'), 'file' => lang('save'))) . "</select>";
$dump_format = "<select name='format'>" . optionlist(array('sql' => 'SQL', 'csv' => 'CSV')) . "</select>";

15
adminer/include/functions.inc.php
View File

@@ -360,9 +360,18 @@ function process_input($field) {
}
}
function dump($string) {
if ($_POST["compress"] == "gz") {
echo gzencode($string);
function dump($string = null) { // null $string forces sending of buffer
static $buffer = ""; // used to improve compression and to allow GZ archives unpackable in Total Commander
if ($_POST["compress"]) {
$buffer .= $string;
if (!isset($string) || strlen($buffer) > 1e6) {
if ($_POST["compress"] == "bz2") {
echo bzcompress($buffer); // should not be called repeatedly but it would require whole buffer in memory or temporary file
} else {
echo gzencode($buffer);
}
$buffer = "";
}
} else {
echo $string;
}