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/**
* This program is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*
* (c) Vincenzo Nicosia 2009-2017 -- <v.nicosia@qmul.ac.uk>
*
* This file is part of NetBunch, a package for complex network
* analysis and modelling. For more information please visit:
*
* http://www.complex-networks.net/
*
* If you use this software, please add a reference to
*
* V. Latora, V. Nicosia, G. Russo
* "Complex Networks: Principles, Methods and Applications"
* Cambridge University Press (2017)
* ISBN: 9781107103184
*
***********************************************************************
*
* This program prints the degree sequence of a graph given as input
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "utils.h"
#define DISTR_ONLY 0x01
#define SEQ_ONLY 0x02
#define BOTH 0x04
void usage(char *argv[]){
printf("********************************************************************\n"
"** **\n"
"** -*- deg_seq -*- **\n"
"** **\n"
"** Compute the degree sequence of a graph given as input. **\n"
"** **\n"
"** The input file 'graph_in' is an edge-list: **\n"
"** **\n"
"** I_1 J_1 **\n"
"** I_2 J_2 **\n"
"** I_3 J_3 **\n"
"** ... ... **\n"
"** I_K J_K **\n"
"** **\n"
"** If 'graph_in' is equal to '-' (dash), read the file from **\n"
"** the standard input (STDIN). **\n"
"** **\n"
"** The program prints on output the degree of each node, one **\n"
"** on each line. **\n"
"** **\n"
"********************************************************************\n"
" This is Free Software - You can use and distribute it under \n"
" the terms of the GNU General Public License, version 3 or later\n\n"
" Please visit http://www.complex-networks.net for more information\n\n"
" (c) Vincenzo Nicosia 2009-2017 (v.nicosia@qmul.ac.uk)\n"
"********************************************************************\n\n"
);
printf("Usage: %s <graph_in>\n" , argv[0]);
}
void print_deg_seq(FILE *fileout, unsigned int *r, unsigned int N){
int i;
for(i=1; i<N +1; i ++)
fprintf(fileout, "%d\n", r[i] - r[i-1] );
}
int main(int argc, char *argv[]){
unsigned int *J_slap=NULL, *r_slap=NULL;
unsigned int K, N;
FILE *filein;
if (argc < 2){
usage(argv);
exit(1);
}
if(!strcmp(argv[1], "-")){
filein = stdin;
}
else{
filein = openfile_or_exit(argv[1], "r", 2);
}
read_slap(filein, &K, &N, &J_slap, &r_slap);
fclose(filein);
print_deg_seq(stdout, r_slap, N);
free(J_slap);
free(r_slap);
}
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