[sgt/agedu] / fgetline.c

/*
 * fgetline.c: implementation of fgetline.h.
 */

#include <stdio.h>
#include <string.h>

#include "alloc.h"
#include "fgetline.h"

char *fgetline(FILE *fp)
{
    char *ret = snewn(512, char);
    int size = 512, len = 0;
    while (fgets(ret + len, size - len, fp)) {
	len += strlen(ret + len);
	if (ret[len-1] == '\n')
	    break;		       /* got a newline, we're done */
	size = len + 512;
	ret = sresize(ret, size, char);
    }
    if (len == 0) {		       /* first fgets returned NULL */
	sfree(ret);
	return NULL;
    }
    ret[len] = '\0';
    return ret;
}
Commit	Line	Data
84849cbd	1	/*
	2	* fgetline.c: implementation of fgetline.h.
	3	*/
	4
	5	#include <stdio.h>
	6	#include <string.h>
	7
995db599	8	#include "alloc.h"
84849cbd	9	#include "fgetline.h"
	10
	11	char fgetline(FILE fp)
	12	{
	13	char *ret = snewn(512, char);
	14	int size = 512, len = 0;
	15	while (fgets(ret + len, size - len, fp)) {
	16	len += strlen(ret + len);
	17	if (ret[len-1] == '\n')
	18	break; /* got a newline, we're done */
	19	size = len + 512;
	20	ret = sresize(ret, size, char);
	21	}
	22	if (len == 0) { /* first fgets returned NULL */
	23	sfree(ret);
	24	return NULL;
	25	}
	26	ret[len] = '\0';
	27	return ret;
	28	}