From 96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Mon, 20 Nov 1995 03:48:11 +0000 Subject: Sat Nov 18 16:46:01 1995 Ulrich Drepper * libio/Makefile, libio/cleanup.c, libio/clearerr.c, libio/feof.c, libio/ferror.c, libio/fgetc.c, libio/filedoalloc.c, libio/fileno.c, libio/fileops.c, libio/fputc.c, libio/freopen.c, libio/fseek.c, libio/genops.c, libio/getc.c, libio/getchar.c, libio/iofclose.c, libio/iofdopen.c, libio/iofflush.c, libio/iofgetpos.c, libio/iofgets.c, libio/iofopen.c, libio/iofprintf.c, libio/iofputs.c, libio/iofread.c, libio/iofscanf.c, libio/iofsetpos.c, libio/ioftell.c, libio/iofwrite.c, libio/iogetdelim.c, libio/iogetline.c, libio/iogets.c, libio/iolibio.h, libio/iopadn.c, libio/ioprims.c, libio/ioputs.c, libio/ioseekoff.c, libio/ioseekpos.c, libio/iosetbuffer.c, libio/iosetvbuf.c, libio/iosprintf.c, libio/ioungetc.c, libio/iovsprintf.c, libio/iovsscanf.c, libio/libio.h, libio/libioP.h, libio/putc.c, libio/putchar.c, libio/rewind.c, libio/setbuf.c, libio/setlinebuf.c, libio/stdfiles.c, libio/stdio.c, libio/stdio.h, libio/strfile.h, libio/strops.c, libio/vasprintf.c, libio/vscanf.c, libio/vsnprintf.c: New files. Slightly modified version from Linux libc. * libio/memstream.c, libio/vdprintf.c: New files for functions not (yet) part of GNU libio. * libio/iofopncook.c: Implementation of `fopencookie', mainly written by Per Bothner. * stdio-common/getline.c: Adapted to libio. * stdio-common/snprintf.c: Adapted to libio. * stdio-common/vfprintf.c: Adapted to libio. * stdio-common/vfscanf.c: Adapted to libio. * sysdeps/posix/tempname.c: Adapted to libio. --- libio/iogetdelim.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 libio/iogetdelim.c (limited to 'libio/iogetdelim.c') diff --git a/libio/iogetdelim.c b/libio/iogetdelim.c new file mode 100644 index 0000000..a6894a5 --- /dev/null +++ b/libio/iogetdelim.c @@ -0,0 +1,105 @@ +/* +Copyright (C) 1994 Free Software Foundation + +This file is part of the GNU IO Library. This library 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 library 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 library; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +As a special exception, if you link this library with files +compiled with a GNU compiler to produce an executable, this does not cause +the resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why +the executable file might be covered by the GNU General Public License. */ + +#ifdef __STDC__ +#include +#endif +#include "libioP.h" +#include +#include + +/* Read up to (and including) a TERMINATOR from FP into *LINEPTR + (and null-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. */ + +_IO_ssize_t +_IO_getdelim (lineptr, n, delimiter, fp) + char **lineptr; + _IO_size_t *n; + int delimiter; + _IO_FILE *fp; +{ + register _IO_ssize_t cur_len = 0; + _IO_ssize_t len; + + if (lineptr == NULL || n == NULL) + { +#ifdef EINVAL + errno = EINVAL; +#endif + return -1; + } + CHECK_FILE (fp, -1); + if (_IO_ferror (fp)) + return -1; + + if (*lineptr == NULL || *n == 0) + { + *n = 120; + *lineptr = (char *) malloc (*n); + if (*lineptr == NULL) + return -1; + } + + len = fp->_IO_read_end - fp->_IO_read_ptr; + if (len <= 0) + { + if (__underflow (fp) == EOF) + return -1; + len = fp->_IO_read_end - fp->_IO_read_ptr; + } + + for (;;) + { + _IO_size_t needed; + char *t; + t = (char *) memchr ((void *) fp->_IO_read_ptr, delimiter, len); + if (t != NULL) + len = (t - fp->_IO_read_ptr) + 1; + /* make enough space for len+1 (for final NUL) bytes. */ + needed = cur_len + len + 1; + if (needed > *n) + { + if (t == NULL && needed < 2 * *n) + needed = 2 * *n; /* Be generous. */ + *n = needed; + *lineptr = (char *) realloc (*lineptr, needed); + if (*lineptr == NULL) + return -1; + } + memcpy (*lineptr + cur_len, (void *) fp->_IO_read_ptr, len); + fp->_IO_read_ptr += len; + cur_len += len; + if (t != NULL || __underflow (fp) == EOF) + break; + len = fp->_IO_read_end - fp->_IO_read_ptr; + } + lineptr[cur_len] = '\0'; + return cur_len; +} + +weak_alias (_IO_getdelim, __getdelim) +weak_alias (_IO_getdelim, getdelim) -- cgit v1.1