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#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <math.h>
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "nnls.h"
#define USAGE "."
int load_a_matrix(char *filename) {
long x = 0;
long y = 0;
char *line = NULL;
size_t len = 0;
fh = fopen(filename, "r");
if(fh == NULL) {
fprintf(stderr, "Could not open %s\n", filename);
exit(EXIT_FAILURE);
}
if(getline(&line, &len, fp) != -1) {
}
while ((read = getline(&line, &len, fp)) != -1) {
}
}
int main(int argc, char **argv) {
int c;
char *a_matrix_filename = NULL;
char *b_matrix_filename = NULL;
char *output_filename = NULL;
char *format = NULL;
long x = 0;
long y = 0;
int verbose = 0;
long width = 0;
long height = 0;
while (1) {
static struct option long_options[] = {
{"a", required_argument, 0, 'a'},
{"b", required_argument, 0, 'b'},
{"output", required_argument, 0, 'o'},
{"verbose", no_argument, 0, 'v'},
{"format", required_argument, 0, 'f'},
{"version", no_argument, 0, 'V'},
{0, 0, 0, 0}
};
int option_index = 0;
c = getopt_long (argc, argv, "i:o:hdvV", long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 0:
case 'a':
a_matrix_filename = optarg;
break;
case 'b':
b_matrix_filename = optarg;
break;
case 'o':
output_filename = optarg;
break;
case 'f':
format = optarg;
break;
case 'v':
verbose = 1;
break;
case 'V':
printf("%s\n", VERSION);
exit(EXIT_SUCCESS);
break;
case 'h':
printf("%s\n", USAGE);
exit(EXIT_SUCCESS);
break;
default:
break;
}
}
if(a_matrix_filename == NULL) {
fprintf(stderr, "Error: a matrix file (-a) must be specified\n\n");
fprintf(stderr, "%s\n", USAGE);
exit(EXIT_FAILURE);
}
if(b_matrix_filename == NULL) {
fprintf(stderr, "Error: b matrix file (-b) must be specified\n\n");
fprintf(stderr, "%s\n", USAGE);
exit(EXIT_FAILURE);
}
if(output_filename == NULL) {
fprintf(stderr, "Error: output filename (-o) must be specified\n\n");
fprintf(stderr, "%s\n", USAGE);
exit(EXIT_FAILURE);
}
if(format == NULL) {
format = "%10lf";
}
if(verbose) {
printf("a matrix: %s\n", a_matrix_filename);
printf("b matrix: %s\n", a_matrix_filename);
printf("output file: %s\n", output_filename);
}
if(access (a_matrix_filename, F_OK) == -1) {
fprintf(stderr, "Error: could not open %s\n", a_matrix_filename);
exit(EXIT_FAILURE);
}
if(access (b_matrix_filename, F_OK) == -1) {
fprintf(stderr, "Error: could not open %s\n", b_matrix_filename);
exit(EXIT_FAILURE);
}
// load our matricies
double *a_matrix = load_a_matrix(a_matrix_filename);
double *b_matrix = load_b_matrix(b_matrix_filename);
// run NNLS
double *solution = nnls(a_matrix, b_matrix, height, width);
// print to stdout if the user supplies "-" as the output argument
FILE *output_fh = NULL;
if(strcmp(output_filename, "-") == 0) {
output_fh = stdout;
}
else {
output_fh = fopen(output_filename, "w");
}
if(output_fh == NULL) {
fprintf(stderr, "Could not open %s for writing\n", output_filename);
exit(EXIT_FAILURE);
}
for(x = 0; x < height; x++) {
fprintf(output_fh, format, solution[x]);
}
fclose(output_fh);
return EXIT_SUCCESS;
}
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