From 9115e4f438379c8a8edd4e4069fe56cd2ab46c4b Mon Sep 17 00:00:00 2001
From: Calvin Morrison <mutantturkey@gmail.com>
Date: Wed, 5 Nov 2014 22:25:50 -0500
Subject: turn that C++ into C

---
 statistics.cpp | 160 ---------------------------------------------------------
 1 file changed, 160 deletions(-)
 delete mode 100644 statistics.cpp

(limited to 'statistics.cpp')

diff --git a/statistics.cpp b/statistics.cpp
deleted file mode 100644
index 800a4e5..0000000
--- a/statistics.cpp
+++ /dev/null
@@ -1,160 +0,0 @@
-#include "config.h"
-#include "statistics.hpp"
-#include <algorithm>
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-#include <sys/time.h>
-
-#include <iostream>
-#include <sstream>
-
-#define PROC_NET_DEV "/proc/net/dev"
-
-namespace statistics {
-
-Interface::Interface(const std::string& name) : name_(name), updated_(false) {}
-
-class InterfaceNameMatchesPredicate {
-    public:
-	InterfaceNameMatchesPredicate(const std::string& name) : name_(name) {}
-
-	bool operator() (const Interface& interface) const { 
-	    return name_ == interface.getName(); 
-	}
-    private:
-	std::string name_;
-};
-
-class InterfaceNotUpdatedPredicate {
-    public:
-	bool operator() (const Interface& interface) const { 
-	    return !interface.getUpdated(); 
-	}
-};
-
-void Interface::update(const Statistics& statistics) {
-    memcpy(statistics_ + 1, statistics_ + 0, sizeof(Statistics));
-    memcpy(statistics_, &statistics, sizeof(Statistics));
-   
-    const Statistics& x0 = statistics_[1];
-    const Statistics& x1 = statistics_[0];
-    
-    double timeDelta = 
-	(x1.timestamp.tv_sec - x0.timestamp.tv_sec) * 1.
-      + (x1.timestamp.tv_usec - x0.timestamp.tv_usec) * .000001;
-
-    receiveSpeed_ = (x1.rx_bytes - x0.rx_bytes) / timeDelta;
-    transmitSpeed_ = (x1.tx_bytes - x0.tx_bytes) / timeDelta;
-
-    updated_ = true;
-}
-
-void Reader::update() {
-    // Open /proc/net/dev
-    FILE *dev = fopen(PROC_NET_DEV, "r");
-    if (!dev) {
-		std::cerr << "cannot open " << PROC_NET_DEV << "\n";
-		exit(EXIT_FAILURE);
-	}
-
-    try {
-	// Clear the 'updated' flag for all interfaces
-	for (Interfaces::iterator interface = interfaces_.begin();
-		interface != interfaces_.end(); ++interface)
-	    interface->setUpdated(false);
-
-	// Read /proc/dev/net
-	while (!feof(dev)) {
-	    char buf[500];
-	    char *name, *statistics_string;
-	    Statistics stats;
-	    struct timezone unused_timezone;
-
-	    // Read a line
-	    fgets(buf, sizeof(buf), dev);
-	    gettimeofday(&stats.timestamp, &unused_timezone);
-
-	    // Find the colon separating the name from the statistics
-	    statistics_string = strchr(buf, ':');
-	    if (!statistics_string) continue;
-
-	    // Get a pointer to the statistics
-	    *statistics_string = 0;
-	    ++statistics_string;
-
-	    // Remove leading whitespace from the name
-	    name = buf;
-	    while (*name == ' ' || *name == '\t') ++name;
-	    
-	    // Parse the statistics
-	    if (sscanf(statistics_string, "%Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu "
-					  "%Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu",
-			    &stats.rx_bytes, &stats.rx_packets, 
-			    &stats.rx_errs, &stats.rx_drop, 
-			    &stats.rx_fifo, &stats.rx_frame, 
-			    &stats.rx_compressed, &stats.rx_multicast,
-			    &stats.tx_bytes, &stats.tx_packets, 
-			    &stats.tx_errs, &stats.tx_drop, 
-			    &stats.tx_fifo, &stats.tx_frame, 
-			    &stats.tx_compressed, &stats.tx_multicast) 
-		    == 16) {
-		
-		// Find the interface with the same name
-		Interfaces::iterator interface 
-		    = std::find_if(interfaces_.begin(), interfaces_.end(), 
-			InterfaceNameMatchesPredicate(name));
-		
-		if (interface == interfaces_.end()) {
-		    // This is a new interface; add it to the list
-		    interfaces_.push_back(Interface(name));
-		    interface = interfaces_.end();
-		    --interface;
-		}
-		
-		// Update the interface
-		interface->update(stats);
-	    }
-	}
-
-	// Remove all interfaces for which the updated flag was not set
-	interfaces_.remove_if(InterfaceNotUpdatedPredicate());
-	
-	// Close the file
-	fclose(dev);
-    }
-    catch (...) {
-	fclose(dev);
-	throw;
-    }
-}
-
-void Interface::setUpdated(bool updated) {
-    updated_ = updated;
-}
-
-bool Interface::getUpdated() const {
-    return updated_;
-}
-
-const std::string& Interface::getName() const {
-    return name_;
-}
-
-double Interface::getReceiveSpeed() const {
-    return receiveSpeed_;
-}
-
-double Interface::getTransmitSpeed() const {
-    return transmitSpeed_;
-}
-
-const Reader::Interfaces& Reader::getInterfaces() const {
-    return interfaces_;
-}
-
-} // namespace statistics
-- 
cgit v1.2.3