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- #ifdef HAVE_CONFIG_H
- # include <config.h>
- #endif
- #include <stdlib.h>
- #include <errno.h>
- #include "getdelim.h"
- #if !HAVE_FLOCKFILE
- # undef flockfile
- # define flockfile(x) ((void) 0)
- #endif
- #if !HAVE_FUNLOCKFILE
- # undef funlockfile
- # define funlockfile(x) ((void) 0)
- #endif
- ssize_t
- getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
- {
- int result = 0;
- ssize_t cur_len = 0;
- ssize_t len;
- if (lineptr == NULL || n == NULL || fp == NULL)
- {
- errno = EINVAL;
- return -1;
- }
- flockfile (fp);
- if (*lineptr == NULL || *n == 0)
- {
- *n = 120;
- *lineptr = (char *) malloc (*n);
- if (*lineptr == NULL)
- {
- result = -1;
- goto unlock_return;
- }
- }
- for (;;)
- {
- char *t;
- int i;
- i = getc (fp);
- if (i == EOF)
- {
- result = -1;
- break;
- }
-
- if (cur_len + 1 >= *n)
- {
- size_t needed = 2 * (cur_len + 1) + 1;
- char *new_lineptr;
- if (needed < cur_len)
- {
- result = -1;
- goto unlock_return;
- }
- new_lineptr = (char *) realloc (*lineptr, needed);
- if (new_lineptr == NULL)
- {
- result = -1;
- goto unlock_return;
- }
- *lineptr = new_lineptr;
- *n = needed;
- }
- (*lineptr)[cur_len] = i;
- cur_len++;
- if (i == delimiter)
- break;
- }
- (*lineptr)[cur_len] = '\0';
- result = cur_len ? cur_len : result;
- unlock_return:
- funlockfile (fp);
- return result;
- }
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