geinf/vcf_to_sfs.c

63 lines
1.3 KiB
C

# include <stdio.h>
# include <stdlib.h>
# include <zlib.h>
#include <string.h>
#include <stdbool.h>
bool StartsWith(const char *a, const char *b)
{
if(strncmp(a, b, strlen(b)) == 0) return 1;
return 0;
}
void slice_str(const char * str, char * buffer, size_t start, size_t end)
{
size_t j = 0;
for ( size_t i = start; i <= end; ++i ) {
buffer[j++] = str[i];
}
buffer[j] = 0;
}
# define LL 8192 /* line length maximum */
int main ( int argc, char *argv[] ){
if ( argc < 3) {
printf("Need 2 args!\n");
return 1;
}
gzFile fp;
char line[LL];
char delim[] = "\t";
fp = gzopen( argv[1], "r" );
gzgets( fp, line, LL );
while ( ! gzeof( fp ) ){
int k = 0;
if ( StartsWith(line, "##") || ( StartsWith(line, "#") ) || (strstr(line, "./.:.") != NULL)){
gzgets( fp, line, LL );
continue;
}
char *vcf_field = strtok(line, delim);
while(vcf_field != NULL){
k++;
if (k > 9) {
const size_t len = strlen(vcf_field);
char buffer[len + 1];
//printf("'%s'\n", ptr);
slice_str(vcf_field, buffer, 0, 0);
printf("%s ", buffer);
}
vcf_field = strtok(NULL, delim);
}
// printf("%s", line );
// loads the next line
gzgets( fp, line, LL );
}
gzclose( fp );
return 0;
}