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37 lines
605 B
37 lines
605 B
#include "readline.h"
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#include <stdlib.h>
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#include <stdio.h>
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char *read_line(FILE *file) {
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int i = 0, length = 0, size = 128;
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char *string = malloc(size);
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if (!string) {
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return NULL;
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}
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while (1) {
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int c = getc(file);
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if (c == EOF || c == '\n' || c == '\0') {
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break;
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}
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if (c == '\r') {
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continue;
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}
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if (i == size) {
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string = realloc(string, length *= 2);
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if (!string) {
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return NULL;
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}
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}
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string[i++] = (char)c;
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length++;
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}
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if (i + 1 != size) {
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string = realloc(string, length + 1);
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if (!string) {
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return NULL;
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}
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}
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string[i] = '\0';
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return string;
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}
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