I've been tasked with creating a new server modification for Crysis Wars. I have ran into a particular issue that it cannot read the old ban-file (this is required in order to keep the server consistent). The Lua code itself does not seem to have any errors, but it's just not getting any of the data.
Looking at the code I'm using for this below, can you find anything wrong with it?
This is the code I'm using for this:
function rX.CheckBanlist(player)
local Root = System.GetCVar("sys_root");
local File = ""..Root.."System/Bansystem/Raptor.xml";
local FileHnd = io.open(File, "r");
for line in FileHnd:lines() do
if (not string.find(line, "User:Read")) then
System.Log("[rX] File Read Error: System/Raptor/Banfile.xml, The contents are unexpected.");
return false;
end
local Msg, Date, Reason, Type, Domain = string.match(line, "User:Read( '(.*)', { Date='(.*)'; Reason='(.*)'; Typ='(.*)'; Info='(.*)'; } );");
local rldomain = g_gameRules.game:GetDomain(player.id);
if (Domain == rldomain) then
return true;
else
return false;
end
end
end
Also, the actual file reads as this, but I can't get the " to work in Lua properly. Could this be the issue?
User:Read( "Banned", { Date="31.03.2011"; Reason="WEBSTREAM"; Typ="Inetnum"; Info="COMPUTER.SED.gg"; } );
You may prefer using Lua's [[ for multiline string when you want to include quotes inside quotes etc.
Also, you'd have to escape the ( and ) while matching:
local Msg, Date, Reason, Type, Domain = line:match([[User:Read%( "(.-)", { Date="(.+)"; Reason="(.+)"; Typ="(.+)"; Info="(.+)"; } %);]])
And the results will be as expected: http://codepad.org/gN8kSL6H
Related
I'm having trouble printing a table to a file with lua (and I'm new to lua).
Here's some code I found here to print the table;
function print_r ( t )
local print_r_cache={}
local function sub_print_r(t,indent)
if (print_r_cache[tostring(t)]) then
print(indent.."*"..tostring(t))
else
print_r_cache[tostring(t)]=true
if (type(t)=="table") then
for pos,val in pairs(t) do
if (type(val)=="table") then
print(indent.."["..pos.."] => "..tostring(t).." {")
sub_print_r(val,indent..string.rep(" ",string.len(pos)+8))
print(indent..string.rep(" ",string.len(pos)+6).."}")
elseif (type(val)=="string") then
print(indent.."["..pos..'] => "'..val..'"')
else
print(indent.."["..pos.."] => "..tostring(val))
end
end
else
print(indent..tostring(t))
end
end
end
if (type(t)=="table") then
print(tostring(t).." {")
sub_print_r(t," ")
print("}")
else
sub_print_r(t," ")
end
print()
end
I have no idea where the 'print' command goes to, I'm running this lua code from within another program. What I would like to do is save the table to a .txt file. Here's what I've tried;
function savetxt ( t )
local file = assert(io.open("C:\temp\test.txt", "w"))
file:write(t)
file:close()
end
Then in the print-r function I've changed everywhere it says 'print' to 'savetxt'. This doesn't work. It doesn't seem to access the text file in any way. Can anyone suggest an alternative method?
I have a suspicion that this line is the problem;
local file = assert(io.open("C:\temp\test.txt", "w"))
Update;
I have tried the edit suggested by Diego Pino but still no success. I run this lua script from another program (for which I don't have the source), so I'm not sure where the default directory of the output file might be (is there a method to get this programatically?). Is is possible that since this is called from another program there's something blocking the output?
Update #2;
It seems like the problem is with this line:
local file = assert(io.open("C:\test\test2.txt", "w"))
I've tried changing it "C:\temp\test2.text", but that didn't work. I'm pretty confident it's an error at this point. If I comment out any line after this (but leave this line in) then it still fails, if I comment out this line (and any following 'file' lines) then the code runs. What could be causing this error?
I have no idea where the 'print' command goes to,
print() output goes to default output file, you can change that with io.output([file]), see Lua manuals for details on querying and changing default output.
where do files get created if I don't specify the directory
Typically it will land in current working directory.
Your print_r function prints out a table to stdout. What you want is to print out the output of print_r to a file. Change the print_r function so instead of printing to stdout, it prints out to a file descriptor. Perhaps the easiest way to do that is to pass a file descriptor to print_r and overwrite the print function:
function print_r (t, fd)
fd = fd or io.stdout
local function print(str)
str = str or ""
fd:write(str.."\n")
end
...
end
The rest of the print_r doesn't need any change.
Later in savetxt call print_r to print the table to a file.
function savetxt (t)
local file = assert(io.open("C:\temp\test.txt", "w"))
print_r(t, file)
file:close()
end
require("json")
result = {
["ip"]="192.168.0.177",
["date"]="2018-1-21",
}
local test = assert(io.open("/tmp/abc.txt", "w"))
result = json.encode(result)
test:write(result)
test:close()
local test = io.open("/tmp/abc.txt", "r")
local readjson= test:read("*a")
local table =json.decode(readjson)
test:close()
print("ip: " .. table["ip"])
2.Another way：
http://lua-users.org/wiki/SaveTableToFile
Save Table to File
function table.save( tbl,filename )
Load Table from File
function table.load( sfile )
So running into an issue with my code here not sure what exactly i'm doing wrong i pass it the two arguments it searches for the file but its always going to does not exist.
i pass this to the file
perl restore.cgi users_old_52715.tar.gz Ace_Walker
its not finding the file it exist i assure you.
#!/usr/bin/perl
use Archive::Tar;
my $tarPath = $ARGV[0];
my $playerfile = $ARGV[1].".ini";
my $tar = Archive::Tar->new($tarPath);
if ($tar->contains_file($playerfile)) {
$tar->read($tarPath);
$tar->extract_file($playerfile, './' );
print "Successfully restored $playerfile to production enviroment\n";
exit 0;
}else{
print $playefile." does not exist in this archive!\n";
exit 0;
}
Just writing Scott Hunter's comment as an answer:
Try using an absolute path instead of a relative one.
if( $tar->extract_file($playerfile, './'.$playerfile )){
print "Successfully restored $playerfile to production enviroment\n";
}
exit 0;
man Archive::Tar :
$tar->extract_file( $file, [$extract_path] )
Write an entry, whose name is equivalent to the file name provided to disk. Optionally takes a second parameter, which is the full native path (including filename) the entry will be written to.
My first question is:
Is this possible to do this, since now I have a perl script which reads Html file and extract data to display on another html file.
If the answer for the question above is Yes, my second question would be:
How to do this?
Sorry to ask frankly as this, but since I'm so new for perl, and I have to take this task, so I'm here for some useful advice or suggestion to guide me through this task. Appreciate your help in advance.
Here's a part of the code, since the whole chunk is quite long:
$date=localtime();
($TWDAY, $TMTH, $TD1D, $TSE, $TYY) = split(/\s+/, $date);
$TSE =~ s/\://g;
$STAMP=_."$TD1D$TMTH$TYY";
#ServerInfo=();
#--------------------------------------------------------------------------- -------------------------------
# Read Directory
#----------------------------------------------------------------------------------------------------------
$myDir=getcwd;
#----------------------------------------------------------------------------------------------------------
# INITIALIZE HTML FORMAT
#----------------------------------------------------------------------------------------------------------
&HTML_FORMAT;
#----------------------------------------------------------------------------------------------------------
# REPORT
#----------------------------------------------------------------------------------------------------------
if (! -d "$myDir/report") { mkdir("$myDir/report");};
$REPORTFILE="$myDir/report/checkpack".".htm";
open OUT,">$REPORTFILE" or die "\nCannot open out file $REPORTFILE\n\n";
print OUT "$Tag_Header";
#----------------------------------------------------------------------------------------------------------
sub numSort {
if ($b < $a) { return -1; }
elsif ($a == $b) { return 0;}
elsif ($b > $a) { return 1; }
}
#ArrayDir = sort numSort #DirArray;
#while (<#ArrayDir>) {
#OutputDir=grep { -f and -T } glob "$myDir/*.htm $myDir/*.html";
#}
#----------------------------------------------------------------------------------------------------------
#ReadLine3=();
$xyxycnt=0;
foreach $InputFile (#OutputDir) { #---- MAIN
$filename=(split /\//, $InputFile) [-1]; print "-"x80 ; print "\nFilename\t:$filename\n";
open IN, "<$InputFile" or die "Cannot open Input file $InputFile\n";
#MyData=();
$DataCnt=0;
#MyLine=();
$MyLineCnt=0;
while (<IN>) {
$LINE=$_;
chomp($LINE);
$LINE=~s/\<br\>/XYXY/ig;
$LINE=~s/\<\/td\>/ \nXYZXYZ\n/ig;
$LINE=~s/\<dirname\>/xxxdirnameyyy/ig;
$LINE=linetrim3($LINE);
$LINE=linetrim($LINE);
$LINE=~s/XYXY/\<br\>/ig;
$LINE=~s/xxxdirnameyyy/< dirname >/ig;
$LINE=~s/^\s+//ig;
print OUT2 "$LINE\n";
if (defined($LINE)) { $MyData[$DataCnt]="$LINE"; $DataCnt++ ; }
}
close IN;
foreach $ReadFile (#MyData) { #--- Mydata
$MyLineCnt++;
$MyLine[$MyLineCnt]="";
#### FILENAME
$ServerInfo[0]="$filename";
#### IP ADDRESS
if ($ReadFile =~ /Host\/Device Name\:/) {
#print "$ReadFile\n"
($Hostname)=(split /\:|\s+/, $ReadFile)[3]; print "$Hostname\n";
&myServerInfo("$Hostname","1");
}
if ($ReadFile =~ /IP Address\(es\)/) {#ListIP=(); $SwIP=1; $CntIP=0 ; };
#### OPERATING SYSTEM & VERSION
if ($ReadFile =~ /Operating System\:/) {
$SwIP=0;
$OS= (split /\:|\s+/, $ReadFile)[3]; &myServerInfo("$OS","3") ; print "$OS\n";
$OSVer= (split /\:|\s+/, $ReadFile)[-2]; &myServerInfo("$OSVer","4") ; print "$OSVer\n";
};
#### GET IP VALUE
if ($SwIP==1) {
$ReadFile=(split /\:/,$ReadFile) [2];
$ReadFile=~s/[a-z|A-Z]|\(|\)|\// /ig; print "$ReadFile\n";
if ($CntIP==0) {
#$ListIP[$CntIP]=(split /\s+/,$ReadFile) [1];
#ListIP="$ReadFile";
} elsif ($CntIP==1) { print "\n\t\t $ReadFile\n" ; $ListIP[$CntIP]="\n$ReadFile";
} else { print "\t\t $ReadFile\n" ; $ListIP[$CntIP]="\n$ReadFile"; };
$CntIP++;
}
I'm afraid if you don't understand what is going on in this program and you also don't understand how to approach a task like this at all, Stack Overflow might not be the right place to get help.
Let me try to show you the approach I would take with this. I'm assuming there is more code.
First, write down a list of everything you know:
What is the input format of the existing file
Where does the existing file come from now
What is the output format of the existing file
Where does the generated output file go afterwards
What does the new file look like
Where does the new file come from
Use perltidy to indent the inherited code so you can read it better. The default options should be enough.
Read the code, take notes about what pieces do what, add comments
Write a unit test for the desired output format. You can use Test::More. Another useful testing module here is Test::File.
Refactor the part that generated the output format to work with a certain data structure. Use your tests to make sure you don't break it.
Write code to parse the new file into the data structure from the point above. Now you can plug that in and get the expected output.
Refactor the part that takes the old input file from the existing file location to be a function, so you can later switch it for the new one.
Write code to get the new file from the new file location.
Document what you did so the next guy is not in the same situation. Remember that could be you in half a year.
Also add use strict and use warnings while you refactor to catch errors more easily. If stuff breaks because of that, make it work before you continue. Those pragmas tell you what's wrong. The most common one you will encounter is Global symbol "$foo" requires explicit package name. That means you need to put my in front of the first assignment, or declare the variable before.
If you have specific questions, ask them as a new question with a short example. Read how to ask to make sure you will get help on those.
Good luck!
After seing your comment I am thinking you want a different input and a different output. In that case, disregard this, throw away the old code and start from scratch. If you don't know enough Perl, get a book like Curtis Poe's Beginning Perl if you already know programming. If not, check out Learning Perl by Randal L. Schwartz.
Im trying to write some basic chat system just to learn perl. Im trying to get the chatlog into a 1 file and print new message if it's appears in the chatlog.dat file, So i've wrote a function that does almost the same thing, but I have got some problems and don't know how to solve them.
So now I have 2 problems!
I could not understand how to keep checkFile function always active (like multiprocession) to continuously check for new messages
This problem occurs when I'm trying to write a new message that will be appended into the chatlog. The Interpreter waits for my input on the line my $newMessage = <STDIN>;, but, what if someone writes a new message? it will not be shown until he press enter... how to void that?
my ($sec,$min,$hour) = localtime();
while(1){
my $userMessage = <STDIN>;
last if $userMessage eq "::quit";
`echo "($hour:$min:$sec): $userMessage" >>chatlog.dat`;
}
sub checkFile{
my $lastMessage = "";
my $newMessage = "";
while (1) {
my $context = `cat chatlog.dat`;
split(/\n/, $context);
$newMessage = $_[$#_];
if ($newMessage ne $lastMessage) {
print $newMessage;
$lastMessage = $newMessage;
}
}
}
First:
don't use echo within a perl script. It's nasty to shell escape when you've got perfectly good IO routines.
using cat to read files is about as nasty as using 'echo'.
reading <STDIN> like that will be a blocking call - which means your script will pause.
but that's not as bad as it sounds, because otherwise you're running a 'busy wait' loop which'll repeatedy cat the file. This is a very bad idea.
You're assuming writing a file like that is an atomic operation, when it's not. You'll hit problems with doing that too.
What I would suggest you do it look at IO::Handle and also consider using flock to ensure you've got the file locked for IO. You may also wish to consider File::Tail instead.
I would actually suggest though, you want to consider a different mode of IPC - as 'file swapping' is quite inefficient. If you really want to use the filesystem for your IO, you might want to consider using a FIFO pipe - have each 'client' open it's own, and have a server reading and coalescing them.
Either way though - you'll either need to use IO::Select or perhaps multithreading, just to swap back and forth between reading and writing. http://perldoc.perl.org/IO/Select.html
Answering my own question
sub checkFile{
my $lastMessage = "";
my $newMessage = "";
my $userName = $_[0];
while (1) {
my $context = `cat chatlog.dat`;
split(/\n/, $context);
$newMessage = $_[$#_];
if ($newMessage ne $lastMessage) {
$newMessage =~ /^\(.+\):\((.+)\) (.+$)/;
if ($1 ne $userName) { print "[$1]: $2";}
$lastMessage = $newMessage;
}
}
}
my $userName = "Rocker";
my ($sec,$min,$hour) = localtime();
my $thr = threads -> create ( \&checkFile, $userName ); #Starting a thread to continuously check for the file update
while (1) {
my $userMessage = <STDIN>; #STDIN will not interfere file checking
last if $userMessage eq "::quit";
`echo "($hour:$min:$sec):($userName) $userMessage" >>chatlog.dat` if $userMessage =~ /\S+/;
}
$thr -> join();
I am having some serious trouble getting a Python 2 based C++ engine to work in Python3. I know the whole IO stack has changed, but everything I seem to try just ends up in failure. Below is the pre-code (Python2) and post code (Python3). I am hoping someone can help me figure out what I'm doing wrong.I am also using boost::python to control the references.
The program is supposed to load a Python Object into memory via a map and then upon using the run function it then finds the file loaded in memory and runs it. I based my code off an example from the delta3d python manager, where they load in a file and run it immediately. I have not seen anything equivalent in Python3.
Python2 Code Begins here:
// what this does is first calls the Python C-API to load the file, then pass the returned
// PyObject* into handle, which takes reference and sets it as a boost::python::object.
// this takes care of all future referencing and dereferencing.
try{
bp::object file_object(bp::handle<>(PyFile_FromString(fullPath(filename), "r" )));
loaded_files_.insert(std::make_pair(std::string(fullPath(filename)), file_object));
}
catch(...)
{
getExceptionFromPy();
}
Next I load the file from the std::map and attempt to execute it:
bp::object loaded_file = getLoadedFile(filename);
try
{
PyRun_SimpleFile( PyFile_AsFile( loaded_file.ptr()), fullPath(filename) );
}
catch(...)
{
getExceptionFromPy();
}
Python3 Code Begins here: This is what I have so far based off some suggestions here... SO Question
Load:
PyObject *ioMod, *opened_file, *fd_obj;
ioMod = PyImport_ImportModule("io");
opened_file = PyObject_CallMethod(ioMod, "open", "ss", fullPath(filename), "r");
bp::handle<> h_open(opened_file);
bp::object file_obj(h_open);
loaded_files_.insert(std::make_pair(std::string(fullPath(filename)), file_obj));
Run:
bp::object loaded_file = getLoadedFile(filename);
int fd = PyObject_AsFileDescriptor(loaded_file.ptr());
PyObject* fileObj = PyFile_FromFd(fd,fullPath(filename),"r",-1,"", "\n","", 0);
FILE* f_open = _fdopen(fd,"r");
PyRun_SimpleFile( f_open, fullPath(filename) );
Lastly, the general state of the program at this point is the file gets loaded in as TextIOWrapper and in the Run: section the fd that is returned is always 3 and for some reason _fdopen can never open the FILE which means I can't do something like PyRun_SimpleFile. The error itself is a debug ASSERTION on _fdopen. Is there a better way to do all this I really appreciate any help.
If you want to see the full program of the Python2 version it's on Github
So this question was pretty hard to understand and I'm sorry, but I found out my old code wasn't quite working as I expected. Here's what I wanted the code to do. Load the python file into memory, store it into a map and then at a later date execute that code in memory. I accomplished this a bit differently than I expected, but it makes a lot of sense now.
Open the file using ifstream, see the code below
Convert the char into a boost::python::str
Execute the boost::python::str with boost::python::exec
Profit ???
Step 1)
vector<char> input;
ifstream file(fullPath(filename), ios::in);
if (!file.is_open())
{
// set our error message here
setCantFindFileError();
input.push_back('\0');
return input;
}
file >> std::noskipws;
copy(istream_iterator<char>(file), istream_iterator<char>(), back_inserter(input));
input.push_back('\n');
input.push_back('\0');
Step 2)
bp::str file_str(string(&input[0]));
loaded_files_.insert(std::make_pair(std::string(fullPath(filename)), file_str));
Step 3)
bp::str loaded_file = getLoadedFile(filename);
// Retrieve the main module
bp::object main = bp::import("__main__");
// Retrieve the main module's namespace
bp::object global(main.attr("__dict__"));
bp::exec(loaded_file, global, global);
Full Code is located on github: