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Add USB device ID query and parsing.

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Now returning an 'okok' 'ed messaged filled with USB printer information.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7653 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Philippe Houdoin 2004-05-26 15:09:53 +00:00
parent 4c87a6fe46
commit 14167249da
1 changed files with 47 additions and 3 deletions
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50
src/add-ons/print/transports/usb_port/print_transport.cpp
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@ -1,6 +1,6 @@
/*****************************************************************************/
// Usb port transport add-on,
// changes by Andreas Benzler
// changes by Andreas Benzler, Philippe Houdoin
//
// Original from Parallel
// port transport add-on.
@ -12,7 +12,7 @@
// where noted, are licensed under the MIT License, and have been written
// and are:
//
// Copyright (c) 2001-2003 OpenBeOS Project
// Copyright (c) 2001-2004 OpenBeOS Project
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
@ -34,12 +34,15 @@
/*****************************************************************************/
#include <unistd.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <StorageKit.h>
#include <SupportKit.h>
#include <USB_printer.h>
#include "PrintTransportAddOn.h"
class UsbPort : public BDataIO {
@ -62,6 +65,7 @@ class UsbPort : public BDataIO {
BDataIO* instanciate_transport(BDirectory* printer, BMessage* msg) {
UsbPort* transport = new UsbPort(printer, msg);
if (transport->IsOk()) {
msg->what = 'okok';
return transport;
} else {
delete transport; return NULL;
@ -74,8 +78,48 @@ BDataIO* instanciate_transport(BDirectory* printer, BMessage* msg) {
UsbPort::UsbPort(BDirectory* printer, BMessage *msg)
: fFile(-1)
{
char device_id[USB_PRINTER_DEVICE_ID_LENGTH + 1];
char name[USB_PRINTER_DEVICE_ID_LENGTH + 1];
char *desc;
char *value;
int ret;
bool bidirectional = true;
// We support only one USB printer, so does BeOS R5.
fFile = open("/dev/printer/usb/0", O_RDWR | O_EXCL | O_BINARY, 0);
if (fFile < 0) {
// Try unidirectional access mode
bidirectional = false;
fFile = open("/dev/printer/usb/0", O_WRONLY | O_EXCL | O_BINARY, 0);
}
if (fFile < 0)
return;
// Get printer's DEVICE ID string
ret = ioctl(fFile, USB_PRINTER_GET_DEVICE_ID, device_id, sizeof(device_id));
if (ret < 0) {
close(fFile);
fFile = -1;
return;
}
// Fill up the message
msg->AddBool("bidirectional", bidirectional);
msg->AddString("device_id", device_id);
// parse and split the device_id string into separate parameters
desc = strtok(device_id, ":");
while (desc) {
snprintf(name, sizeof(name), "DEVID:%s", desc);
value = strtok(NULL, ";");
if (!value)
break;
msg->AddString(name, value);
// next device descriptor
desc = strtok(NULL, ":");
}
}