39 lines
610 B
C
39 lines
610 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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char *
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fgetln(FILE *fp, size_t *lenp)
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{
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#define EXTRA 80
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char *buf = NULL;
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int used = 0, len = 0, remain = 0, final = 0;
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while(!final) {
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char *b;
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int r;
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if(remain < EXTRA) {
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int newlen;
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char *newbuf;
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newlen = len + EXTRA;
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if(!(newbuf = realloc(buf, newlen))) {
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if(buf) free(buf);
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return NULL;
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}
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buf = newbuf;
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len = newlen;
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remain += EXTRA;
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}
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buf[used] = '\0';
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if(!fgets(buf + used, remain, fp))
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break;
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r = strlen(buf+used);
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used += r;
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remain -= r;
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len += r;
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}
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*lenp = len;
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return buf;
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}
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