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* 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.
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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Copyright (C) 1993 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#include "libioP.h"
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#include <string.h>
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/* Algorithm based on that used by Berkeley pre-4.4 fgets implementation.
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Read chars into buf (of size n), until delim is seen.
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Return number of chars read (at most n).
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Does not put a terminating '\0' in buf.
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If extract_delim < 0, leave delimiter unread.
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If extract_delim > 0, insert delim in output. */
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_IO_size_t
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DEFUN(_IO_getline, (fp, buf, n, delim, extract_delim),
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_IO_FILE *fp AND char* buf AND _IO_size_t n
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AND int delim AND int extract_delim)
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{
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register char *ptr = buf;
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do
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{
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_IO_ssize_t len = fp->_IO_read_end - fp->_IO_read_ptr;
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char *t;
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if (len <= 0)
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if (__underflow(fp) == EOF)
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break;
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else
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len = fp->_IO_read_end - fp->_IO_read_ptr;
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if (len >= n)
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len = n;
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t = (char*)memchr((void*)fp->_IO_read_ptr, delim, len);
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if (t != NULL)
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{
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_IO_size_t old_len = ptr-buf;
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len = t - fp->_IO_read_ptr;
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if (extract_delim >= 0)
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{
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t++;
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if (extract_delim > 0)
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len++;
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}
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memcpy((void*)ptr, (void*)fp->_IO_read_ptr, len);
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fp->_IO_read_ptr = t;
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return old_len + len;
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}
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memcpy((void*)ptr, (void*)fp->_IO_read_ptr, len);
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fp->_IO_read_ptr += len;
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ptr += len;
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n -= len;
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} while (n != 0);
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return ptr - buf;
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}
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