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author | Simon Josefsson <simon@josefsson.org> | 2005-08-12 09:57:27 +0000 |
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committer | Simon Josefsson <simon@josefsson.org> | 2005-08-12 09:57:27 +0000 |
commit | 3132c8be52a21a4dce04a5ef33a2c473093655c3 (patch) | |
tree | 8b1fa9442161e0efebbd600580cec6eb4f533026 /gl/getdelim.c | |
parent | 900cfee3472370e2113418b5057af38b06820b66 (diff) | |
download | gnutls-3132c8be52a21a4dce04a5ef33a2c473093655c3.tar.gz |
Update.
Diffstat (limited to 'gl/getdelim.c')
-rw-r--r-- | gl/getdelim.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/gl/getdelim.c b/gl/getdelim.c new file mode 100644 index 0000000000..02bb9a4976 --- /dev/null +++ b/gl/getdelim.c @@ -0,0 +1,116 @@ +/* getdelim.c --- Implementation of replacement getdelim function. + Copyright (C) 1994, 1996, 1997, 1998, 2001, 2003, 2005 Free + Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. */ + +/* Ported from glibc by Simon Josefsson. */ + +#if 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 + +/* Read up to (and including) a DELIMITER from FP into *LINEPTR (and + NUL-terminate it). *LINEPTR is a pointer returned from malloc (or + NULL), pointing to *N characters of space. It is realloc'ed as + necessary. Returns the number of characters read (not including + the null terminator), or -1 on error or EOF. */ + +ssize_t +getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp) +{ + int result; + 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) + break; + + /* Make enough space for len+1 (for final NUL) bytes. */ + if (cur_len + 1 >= *n) + { + size_t needed = 2 * (cur_len + 1) + 1; /* Be generous. */ + 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; + + unlock_return: + funlockfile (fp); + return result; +} |