From cf4328b16efe844461420da58f4f0b0f75964418 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Thu, 26 Oct 2000 07:12:49 +0000 Subject: Add some more stuff -- {get|set}mntent, getline, getdelim, etc. --- libc/stdio/getdelim.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 libc/stdio/getdelim.c (limited to 'libc/stdio/getdelim.c') diff --git a/libc/stdio/getdelim.c b/libc/stdio/getdelim.c new file mode 100644 index 000000000..99d48bb32 --- /dev/null +++ b/libc/stdio/getdelim.c @@ -0,0 +1,70 @@ +/* vi: set sw=4 ts=4: */ +/* + * getdelim for uclibc + * + * Copyright (C) 2000 by Lineo, inc. Written by Erik Andersen + * , + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Library General Public License as published by + * the Free Software Foundation; either version 2 of the License, 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 Library General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include + + +/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR + (and null-terminate it). *LINEPTR is a pointer returned from malloc (or + NULL), pointing to *N characters of space. It is realloc'd as + necessary. Returns the number of characters read (not including the + null delimiter), or -1 on error or EOF. */ +size_t getdelim(char **linebuf, size_t *linebufsz, int delimiter, FILE *file) +{ + static const int GROWBY = 80; /* how large we will grow strings by */ + + int ch; + int idx = 0; + + if (file == NULL || linebuf==NULL || *linebuf == NULL || linebufsz == NULL) { + errno=EINVAL; + return -1; + } + + while (1) { + ch = fgetc(file); + if (ch == EOF) + break; + /* grow the line buffer as necessary */ + while (idx > *linebufsz-2) { + *linebuf = realloc(*linebuf, *linebufsz += GROWBY); + if (!*linebuf) { + errno=ENOMEM; + return -1; + } + } + *linebuf[idx++] = (char)ch; + if ((char)ch == delimiter) + break; + } + + if (idx != 0) + *linebuf[idx] = 0; + return idx; +} + -- cgit v1.2.3