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#include <iostream>
#include <fstream>
#include <sstream>
#include <cstring>
#include <string>
#include <stdio.h>
#include <map>
#include <vector>
#include <sys/time.h>
#include <algorithm>
using namespace std;
struct TwitterInteraction
{
int32_t from;
int32_t to;
bool follow;
int16_t retweets;
time_t twtime;
};
struct Header
{
uint64_t version;
uint64_t objsize;
uint64_t format; // 0: binary, 1: ascii
uint64_t m;
uint64_t n;
uint64_t nnz;
};
int main(int argc, char *argv[] )
{
if(argc < 3)
{
cout << "Usage: " << argv[0] << " <filename> <bin/text>" << endl;
return 0;
}
stringstream outs;
outs << argv[1] << ".converted";
FILE * bFile = fopen (outs.str().c_str(),"wb+");
int32_t vid;
int64_t edges;
char start[5] = "HKDT";
Header hdr;
hdr.version = 2; // 2 means 0.2
hdr.objsize = sizeof(TwitterInteraction);
hdr.format = 0; // binary
hdr.m = vid;
hdr.n = vid;
hdr.nnz = edges;
if(string(argv[2]) == string("text"))
{
FILE * rFile = fopen (argv[1],"r");
if(rFile != NULL)
{
cout << "Reading text file" << endl;
size_t n=256;
char * comment = (char*) malloc(n);
int bytes_read = getline(&comment, &n, rFile);
while(comment[0] == '%')
{
bytes_read = getline(&comment, &n, rFile);
}
stringstream ss;
ss << string(comment);
ss >> hdr.m >> hdr.n >> hdr.nnz;
cout << "Size of Header: " << sizeof(hdr) << endl;
fwrite(start, 4, 1, bFile);
fwrite(&hdr.version, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.objsize, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.format, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.m, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.n, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.nnz, sizeof(uint64_t), 1,bFile);
struct tm timeinfo;
int year, month, day, hour, min, sec;
while(!feof(rFile))
{
TwitterInteraction twi;
// example time format (for text): 2009-06-08 21:49:30
if(fscanf (rFile, "%d %d %d %d",&(twi.from),&(twi.to),&(twi.follow),&(twi.retweets)) == 0) break;
if(twi.retweets > 0)
{
if(fscanf (rFile, "%d-%d-%d %d:%d:%d\n", &year, &month, &day, &hour, &min, &sec) == 0)
{
cout << "Expected retweet data non-existent\n";
break;
}
memset(&timeinfo, 0, sizeof(struct tm));
timeinfo.tm_year = year - 1900; // year is "years since 1900"
timeinfo.tm_mon = month - 1 ; // month is in range 0...11
timeinfo.tm_mday = day; // range 1...31
timeinfo.tm_hour = hour; // range 0...23
timeinfo.tm_min = min; // range 0...59
timeinfo.tm_sec = sec; // range 0...59
twi.twtime = mktime(&timeinfo);
if(twi.twtime == -1) { cout << "Can not parse time date" << endl; break;}
}
else
{
twi.twtime = 0;
fscanf (rFile, "\n"); // read newline
}
fwrite(&twi,sizeof(TwitterInteraction),1,bFile); // write binary file
}
}
}
else if(string(argv[2]) == string("bin"))
{
FILE * rFile = fopen (argv[1],"rb");
fread(&vid,sizeof(int32_t),1,rFile);
fread(&edges,sizeof(int64_t),1,rFile);
hdr.m = vid;
hdr.n = vid;
hdr.nnz = edges;
cout << "Size of Header: " << sizeof(hdr) << endl;
fwrite(start, 4, 1, bFile);
fwrite(&hdr.version, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.objsize, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.format, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.m, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.n, sizeof(uint64_t), 1,bFile);
fwrite(&hdr.nnz, sizeof(uint64_t), 1,bFile);
if(rFile != NULL)
{
cout << "Reading binary" << endl;
vector<TwitterInteraction> twis;
while(!feof(rFile))
{
TwitterInteraction twi;
fread (&twi,sizeof(TwitterInteraction),1,rFile);
twis.push_back(twi);
}
random_shuffle ( twis.begin(), twis.end());
for(vector<TwitterInteraction>::iterator it = twis.begin(); it != twis.end(); it++)
{
TwitterInteraction twi = *it;
fwrite(&twi,sizeof(TwitterInteraction),1,bFile); // write binary file
}
}
}
else
{
cout << "What's your file format, dude?" << endl;
}
fclose(bFile);
// test written file
cout << "Reading first line of binary file..." << endl;
bFile = fopen (outs.str().c_str(),"r");
char begin[5];
fread(begin, 4, 1, bFile);
begin[4] = '\0';
printf ("Header of : %s\n", begin);
fclose(bFile);
return 0;
}
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