50 lines
952 B
C
50 lines
952 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <errno.h>
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#include "fileutil.h"
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ssize_t getdelim(char **restrict lineptr, size_t *restrict n, int delim, FILE *restrict fp)
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{
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ssize_t cur = 0;
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char *new_lineptr = NULL;
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size_t new_n;
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if(lineptr == NULL || n == NULL || fp == NULL)
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{
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errno=EINVAL;
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return -1;
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}
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if(*lineptr == NULL)
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{
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*n = 80;
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*lineptr = (char *) malloc(*n);
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if(*lineptr==NULL) return -1;
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}
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do
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{
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ssize_t read_size = __fp_fread2(fp, *lineptr + cur, *n - cur - 1, delim);
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if(read_size <= 0) return -1;
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cur += read_size;
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if((*lineptr)[cur - 1] != delim && !feof(fp))
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{
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new_n = *n * 2;
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new_lineptr = (char *) realloc(*lineptr, new_n);
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if(new_lineptr == NULL) return -1;
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*lineptr = new_lineptr;
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*n = new_n;
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}
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}while((*lineptr)[cur-1] != delim && !feof(fp));
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(*lineptr)[cur] = '\0';
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if(feof(fp) && (*lineptr)[cur-1] != delim)
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{
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return -1;
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}else{
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return cur;
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}
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}
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