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#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include "misc.h"
#define LINE_SIZE getpagesize()
char *next_line(FILE *file)
{
static char *line;
static size_t line_size;
char *c;
int eol = 0;
if (!line) {
if (high_water_alloc((void **)&line, &line_size, LINE_SIZE))
return NULL;
}
c = line;
do {
if (!fgets(c, line_size - (c - line), file))
return NULL;
c = strrchr(c, '\0');
while (c > line && (*(c-1) == '\n' || *(c-1) == '\r')) {
c--;
*c = '\0';
eol = 1;
}
if (feof(file))
break;
if (!eol) {
if (high_water_alloc((void **)&line, &line_size,
2 * line_size))
return NULL;
c = strrchr(line, '\0');
}
} while (!eol);
return line;
}
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