I wrote a C program that converts a text file of numbers to a binary
file of floats, or vice-versa. It's attached. It's all in one file, so
you just have to compile that file and make an executable called
"convert" or "convert.exe"
Then, say you have a chromosome file named "savedchromes". You just
type the commmand:
convert savedchromes
and you get a file called savedchromes.txt which consists of the same
values in text form. You can then email that file to someone whos
floats are not binary compatible. He will then give the command:
convert savedchromes.txt
He will get a binary file named savedchromes.txt.bin which is compatible
with his machine. He can rename the file to something more convenient
if he wishes.
m
--
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/* convert.c - converts float array to text or vice-versa
by M. Timin, August 2006
Just give a filename; if it's a text file of numbers it will convert it
to binary. If it's a binary file it will convert it to text numbers.
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUMS_PER_LINE 10 /* only used for outputting text */
void text2bin(char* name);
void bin2text(char* name);
int main(int argc, char *argv[]) {
FILE* file;
unsigned char c;
int i;
int isBinary = 0;
if(argc != 2 || *argv[1] == '-' || *argv[1] == '/') {
printf("Need one argument, a file name to convert.\n");
exit(1);
}
file = fopen(argv[1], "rb");
if(file == NULL) {
printf("Can't open %s file\n", argv[1]);
exit(0);
}
/* Read a few bytes to determine if this is a text file or a binary file: */
for(i=0; i<10; i++){
c = fgetc(file);
if(c < ' ' || c > '~') {
isBinary = 1;
break;
}
/* printf("%4d %c\n", c, c); */
}
fclose(file);
if(!isBinary) {
printf("Converting from text to binary.\n");
text2bin(argv[1]);
}
else {
printf("Converting from binary to text.\n");
bin2text(argv[1]);
}
printf("Done.\n");
}
void bin2text(char* name){
int i, count;
float val;
FILE *infile, *outfile;
infile = fopen(name, "rb");
outfile = fopen(strcat(name, ".txt"), "w");
if(infile == NULL) {
printf("Can't open %s source file\n", name);
exit(0);
}
if(outfile == NULL) {
printf("Can't open %s destination file\n", strcat(name, ".txt"));
exit(0);
}
for(i=1; ;i++) {
count = fread(&val, 1, sizeof(float), infile);
if(count != sizeof(float))
break;
fprintf(outfile, "%11.6f ", val);
if(i%NUMS_PER_LINE == 0)
fprintf(outfile, "\n");
}
printf("read & wrote %d values\n", i-1);
if((i-1)%NUMS_PER_LINE != 0)
fprintf(outfile, "\n");
fclose(infile);
fclose(outfile);
}
void text2bin(char* name) {
int i, count;
float val;
FILE *infile, *outfile;
infile = fopen(name, "r");
outfile = fopen(strcat(name, ".bin"), "wb");
if(infile == NULL) {
printf("Can't open %s source file\n", name);
exit(0);
}
if(outfile == NULL) {
printf("Can't open %s destination file\n", strcat(name, ".bin"));
exit(0);
}
for(i=1; ;i++) {
count = fscanf(infile, "%f", &val);
if(count != 1)
break;
fwrite(&val, 1, sizeof(float), outfile);
}
printf("read & wrote %d values\n", i-1);
fclose(infile);
fclose(outfile);
}
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