4
0
mirror of git://sourceware.org/git/newlib-cygwin.git synced 2025-01-29 10:30:50 +08:00
Jeff Johnston 239c2bf93e 2005-10-28 Bob Wilson <bob.wilson@acm.org>
* libc/misc/unctrl.c: Replace FUNCTION description.
        * libc/signal/signal.c: Remove documentation for raise and  _raise_r.
        * libc/stdio/getdelim.c: Fix spelling errors.
        * libc/stdio/getw.c: Put RETURNS on a separate line.  Fix  punctuation.
        * libc/stdio/putw.c: Likewise.
        * libc/stdlib/a64l.c: Fix formatting, spelling and  punctuation in
        documentation.
        * libc/stdlib/assert.c: Do not capitalize FUNCTION description.
        * libc/stdlib/efgcvt.c: Add spaces to FUNCTION description.
        * libc/stdlib/envlock.c: Use em-dash in FUNCTION description.
        * libc/stdlib/mlock.c: Likewise.
        * libc/stdlib/mstats.c: Likewise.
        * libc/time/tzlock.c: Likewise.
        * libc/stdlib/rand.c: Use "multi-threaded" and "thread-safe"  in NOTES.
        * libc/stdlib/rand48.c: Remove extra space in FUNCTION  description
        and hyphenate "pseudo-random".
        * libc/string/bcmp.c: Remove extra blank lines in  documentation.
        * libc/string/strncat.c: Likewise.
        * libc/string/memchr.c: Remove extra ">" character in  documentation.
        * libc/string/strcspn.c: Use "characters" instead of "chars".
        * libc/string/strpbrk.c: Likewise.
        * libc/string/strerror_r.c: Capitalize "GNU".
        * libc/string/strnlen.c: Likewise.
        * libc/string/strtok.c: Fix formatting, spelling and  punctuation in
        documentation.  Use "multi-threaded" and "thread-safe" in  NOTES.
        * libc/string/wcscat.c: Split PORTABILITY into two paragraphs.
        * libc/string/wcschr.c: Likewise.
        * libc/string/wcscmp.c: Likewise.
        * libc/string/wcscpy.c: Likewise.
        * libc/string/wcscspn.c: Likewise.
        * libc/string/wcslen.c: Likewise.
        * libc/string/wcsncat.c: Likewise.
        * libc/string/wcsncmp.c: Likewise.
        * libc/string/wcsncpy.c: Likewise.
        * libc/string/wcsnlen.c: Likewise.
        * libc/string/wcspbrk.c: Likewise.
        * libc/string/wcsrchr.c: Likewise.
        * libc/string/wcsspn.c: Likewise.
        * libc/string/wmemchr.c: Likewise.
        * libc/string/wmemcmp.c: Likewise.
        * libc/string/wmemcpy.c: Likewise.
        * libc/string/wmemset.c: Likewise.
        * libc/string/wmemmove.c: Likewise.  Also fix FUNCTION  description.
        * libc/string/wcswidth.c: Formatting and punctuation in  documentation.
        * libc/string/wcwidth.c: Likewise.
        * libm/common/s_modf.c: Remove extra period from documentation.
        * libm/math/s_isnan.c: Fix formatting, grammar and  punctuation in
        documentation.
        * libm/mathfp/s_isnan.c: Likewise.
        * libm/math/s_ldexp.c: Fix punctuation.
        * libm/mathfp/s_ldexp.c: Likewise.
        * libm/math/w_log.c: Likewise.
        * libm/mathfp/s_logarithm.c: Likewise.
        * libm/math/w_j0.c: Add spaces to FUNCTION description.
        * libm/mathfp/w_jn.c: Likewise.
2005-10-28 21:21:08 +00:00

143 lines
2.9 KiB
C

/* Copyright 2002, Red Hat Inc. - all rights reserved */
/*
FUNCTION
<<getdelim>>---read a line up to a specified line delimiter
INDEX
getdelim
ANSI_SYNOPSIS
#include <stdio.h>
int getdelim(char **<[bufptr]>, size_t *<[n]>,
int <[delim]>, FILE *<[fp]>);
TRAD_SYNOPSIS
#include <stdio.h>
int getdelim(<[bufptr]>, <[n]>, <[delim]>, <[fp]>)
char **<[bufptr]>;
size_t *<[n]>;
int <[delim]>;
FILE *<[fp]>;
DESCRIPTION
<<getdelim>> reads a file <[fp]> up to and possibly including a specified
delimiter <[delim]>. The line is read into a buffer pointed to
by <[bufptr]> and designated with size *<[n]>. If the buffer is
not large enough, it will be dynamically grown by <<getdelim>>.
As the buffer is grown, the pointer to the size <[n]> will be
updated.
RETURNS
<<getdelim>> returns <<-1>> if no characters were successfully read;
otherwise, it returns the number of bytes successfully read.
At end of file, the result is nonzero.
PORTABILITY
<<getdelim>> is a glibc extension.
No supporting OS subroutines are directly required.
*/
#include <_ansi.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "local.h"
#define MIN_LINE_SIZE 4
#define DEFAULT_LINE_SIZE 128
ssize_t
_DEFUN(__getdelim, (bufptr, n, delim, fp),
char **bufptr _AND
size_t *n _AND
int delim _AND
FILE *fp)
{
char *buf;
char *ptr;
size_t newsize, numbytes;
int pos;
int ch;
int cont;
if (fp == NULL || bufptr == NULL || n == NULL)
{
errno = EINVAL;
return -1;
}
buf = *bufptr;
if (buf == NULL || *n < MIN_LINE_SIZE)
{
buf = (char *)realloc (*bufptr, DEFAULT_LINE_SIZE);
if (buf == NULL)
{
return -1;
}
*bufptr = buf;
*n = DEFAULT_LINE_SIZE;
}
CHECK_INIT (_REENT);
_flockfile (fp);
numbytes = *n;
ptr = buf;
cont = 1;
while (cont)
{
/* fill buffer - leaving room for nul-terminator */
while (--numbytes > 0)
{
if ((ch = getc_unlocked (fp)) == EOF)
{
cont = 0;
break;
}
else
{
*ptr++ = ch;
if (ch == delim)
{
cont = 0;
break;
}
}
}
if (cont)
{
/* Buffer is too small so reallocate a larger buffer. */
pos = ptr - buf;
newsize = (*n << 1);
buf = realloc (buf, newsize);
if (buf == NULL)
{
cont = 0;
break;
}
/* After reallocating, continue in new buffer */
*bufptr = buf;
*n = newsize;
ptr = buf + pos;
numbytes = newsize - pos;
}
}
_funlockfile (fp);
/* if no input data, return failure */
if (ptr == buf)
return -1;
/* otherwise, nul-terminate and return number of bytes read */
*ptr = '\0';
return (ssize_t)(ptr - buf);
}