[ale] OT: C not C++ Question

[cfowler]

I've been working on a little project to replicate the success I've had
in Java (fast programming) to C (slow programming).  I've been
replicating the Java classes to C and not C++.  But I've come into an
interesting issue where since we have no garbage collector in C that we
must be extremely careful to free all allocated data.  All the code in
'liboop' malloc()'s each object.


Socket Object:

// Out Socket Object definition
typedef struct oop_Socket {
    struct sockaddr_in  inet; // Socket info
    int sock;
    BOOLEAN connected;
    BOOLEAN debug;
    BOOLEAN server;
    BOOLEAN soReuseAddr;
} Socket;


Example Code:
int
main(int argc, char **argv)
{
        Socket *sock;
        String *tmp;
        InputStream *is;
        OutputStream *os;
        BufferedInputStream *bis;
        String *to = String_new("<chuck at cehuber.org>");
        String *from = String_new("<cfowler at opsup.com>");
        int code;

        if((sock = Socket_new("192.168.1.254", 25)) == NULL)
                err("Could not create Socket");

        if((Socket_connect(sock)) == -1)
                err("Could not make conenction");

        //Now we have a conenction lets get out streams
        is = Socket_getInputStream(sock);
        os = Socket_getOutputStream(sock);

        // Create our buffered input stream
        bis = BufferedInputStream_new(is);

        tmp = BufferedInputStream_readLine(bis);
        printf("Got: [%s]\n", String_getChars(tmp));
        String_dispose(tmp);

        tmp = String_new("Helo localhost.localdomain\r\n");
        sendCmd(sock, tmp, &code);
        String_dispose(tmp);

        tmp = String_new_1("MAIL FROM: %s\r\n", String_getChars(from));
        sendCmd(sock, tmp, &code);
        String_dispose(tmp);

        tmp = String_new_1("RCPT TO: %s\r\n", String_getChars(to));
        sendCmd(sock, tmp, &code);
        String_dispose(tmp);

        tmp = String_new("DATA\r\n");
        sendCmd(sock, tmp, &code);
        String_dispose(tmp);

        InputStream_dispose(is);
        is = InputStream_new(NULL);
        InputStream_setFd(is, 0); // Set FD to STDIN
        bis = BufferedInputStream_new(is);

        while(true) {
                tmp = BufferedInputStream_readLine(bis);

                if(String_startsWith(tmp, ".") == true) {
                        String_append(tmp, "\r\n");
                        OutputStream_write_1(os, tmp);
                        tmp = BufferedInputStream_readLine(
                                                BufferedInputStream_new(
                                               
Socket_getInputStream(sock)));

                        printf("Got: [%s]\n", String_getChars(tmp));
                        String_dispose(tmp);
                        break;
                }

                String_append(tmp, "\r\n");
                OutputStream_write_1(os, tmp);

        }


        // Clean up
        String_dispose(to);
        String_dispose(from);
        BufferedInputStream_dispose(bis);
        InputStream_dispose(is);
        OutputStream_dispose(os);
        Socket_dispose(sock);

}


Since the test code never gets a pointer in the while loop to the
BufferdInputStream that is created it is forever lost memory.  Any ideas
on how I can accomplish these tasks.  Notice how the above C code looks
like Java :)



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