+++ /dev/null
-/* Word-wrapping and line-truncating streams.
- Copyright (C) 1997, 2006-2008 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Written by Miles Bader <miles@gnu.ai.mit.edu>.
-
- 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 3 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 General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* This package emulates glibc `line_wrap_stream' semantics for systems that
- don't have that. If the system does have it, it is just a wrapper for
- that. This header file is only used internally while compiling argp, and
- shouldn't be installed. */
-
-#ifndef _ARGP_FMTSTREAM_H
-#define _ARGP_FMTSTREAM_H
-
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-#ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later. */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
-# define __attribute__(Spec) /* empty */
-# endif
-/* The __-protected variants of `format' and `printf' attributes
- are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || __STRICT_ANSI__
-# define __format__ format
-# define __printf__ printf
-# endif
-#endif
-
-#if (_LIBC - 0 && !defined (USE_IN_LIBIO)) \
- || (defined (__GNU_LIBRARY__) && defined (HAVE_LINEWRAP_H))
-/* line_wrap_stream is available, so use that. */
-#define ARGP_FMTSTREAM_USE_LINEWRAP
-#endif
-
-#ifdef ARGP_FMTSTREAM_USE_LINEWRAP
-/* Just be a simple wrapper for line_wrap_stream; the semantics are
- *slightly* different, as line_wrap_stream doesn't actually make a new
- object, it just modifies the given stream (reversibly) to do
- line-wrapping. Since we control who uses this code, it doesn't matter. */
-
-#include <linewrap.h>
-
-typedef FILE *argp_fmtstream_t;
-
-#define argp_make_fmtstream line_wrap_stream
-#define __argp_make_fmtstream line_wrap_stream
-#define argp_fmtstream_free line_unwrap_stream
-#define __argp_fmtstream_free line_unwrap_stream
-
-#define __argp_fmtstream_putc(fs,ch) putc(ch,fs)
-#define argp_fmtstream_putc(fs,ch) putc(ch,fs)
-#define __argp_fmtstream_puts(fs,str) fputs(str,fs)
-#define argp_fmtstream_puts(fs,str) fputs(str,fs)
-#define __argp_fmtstream_write(fs,str,len) fwrite(str,1,len,fs)
-#define argp_fmtstream_write(fs,str,len) fwrite(str,1,len,fs)
-#define __argp_fmtstream_printf fprintf
-#define argp_fmtstream_printf fprintf
-
-#define __argp_fmtstream_lmargin line_wrap_lmargin
-#define argp_fmtstream_lmargin line_wrap_lmargin
-#define __argp_fmtstream_set_lmargin line_wrap_set_lmargin
-#define argp_fmtstream_set_lmargin line_wrap_set_lmargin
-#define __argp_fmtstream_rmargin line_wrap_rmargin
-#define argp_fmtstream_rmargin line_wrap_rmargin
-#define __argp_fmtstream_set_rmargin line_wrap_set_rmargin
-#define argp_fmtstream_set_rmargin line_wrap_set_rmargin
-#define __argp_fmtstream_wmargin line_wrap_wmargin
-#define argp_fmtstream_wmargin line_wrap_wmargin
-#define __argp_fmtstream_set_wmargin line_wrap_set_wmargin
-#define argp_fmtstream_set_wmargin line_wrap_set_wmargin
-#define __argp_fmtstream_point line_wrap_point
-#define argp_fmtstream_point line_wrap_point
-
-#else /* !ARGP_FMTSTREAM_USE_LINEWRAP */
-/* Guess we have to define our own version. */
-\f
-struct argp_fmtstream
-{
- FILE *stream; /* The stream we're outputting to. */
-
- size_t lmargin, rmargin; /* Left and right margins. */
- ssize_t wmargin; /* Margin to wrap to, or -1 to truncate. */
-
- /* Point in buffer to which we've processed for wrapping, but not output. */
- size_t point_offs;
- /* Output column at POINT_OFFS, or -1 meaning 0 but don't add lmargin. */
- ssize_t point_col;
-
- char *buf; /* Output buffer. */
- char *p; /* Current end of text in BUF. */
- char *end; /* Absolute end of BUF. */
-};
-
-typedef struct argp_fmtstream *argp_fmtstream_t;
-
-/* Return an argp_fmtstream that outputs to STREAM, and which prefixes lines
- written on it with LMARGIN spaces and limits them to RMARGIN columns
- total. If WMARGIN >= 0, words that extend past RMARGIN are wrapped by
- replacing the whitespace before them with a newline and WMARGIN spaces.
- Otherwise, chars beyond RMARGIN are simply dropped until a newline.
- Returns NULL if there was an error. */
-extern argp_fmtstream_t __argp_make_fmtstream (FILE *__stream,
- size_t __lmargin,
- size_t __rmargin,
- ssize_t __wmargin);
-extern argp_fmtstream_t argp_make_fmtstream (FILE *__stream,
- size_t __lmargin,
- size_t __rmargin,
- ssize_t __wmargin);
-
-/* Flush __FS to its stream, and free it (but don't close the stream). */
-extern void __argp_fmtstream_free (argp_fmtstream_t __fs);
-extern void argp_fmtstream_free (argp_fmtstream_t __fs);
-
-extern ssize_t __argp_fmtstream_printf (argp_fmtstream_t __fs,
- const char *__fmt, ...)
- __attribute__ ((__format__ (printf, 2, 3)));
-extern ssize_t argp_fmtstream_printf (argp_fmtstream_t __fs,
- const char *__fmt, ...)
- __attribute__ ((__format__ (printf, 2, 3)));
-
-#if _LIBC || !defined __OPTIMIZE__
-extern int __argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch);
-extern int argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch);
-
-extern int __argp_fmtstream_puts (argp_fmtstream_t __fs, const char *__str);
-extern int argp_fmtstream_puts (argp_fmtstream_t __fs, const char *__str);
-
-extern size_t __argp_fmtstream_write (argp_fmtstream_t __fs,
- const char *__str, size_t __len);
-extern size_t argp_fmtstream_write (argp_fmtstream_t __fs,
- const char *__str, size_t __len);
-#endif
-\f
-/* Access macros for various bits of state. */
-#define argp_fmtstream_lmargin(__fs) ((__fs)->lmargin)
-#define argp_fmtstream_rmargin(__fs) ((__fs)->rmargin)
-#define argp_fmtstream_wmargin(__fs) ((__fs)->wmargin)
-#define __argp_fmtstream_lmargin argp_fmtstream_lmargin
-#define __argp_fmtstream_rmargin argp_fmtstream_rmargin
-#define __argp_fmtstream_wmargin argp_fmtstream_wmargin
-
-#if _LIBC || !defined __OPTIMIZE__
-/* Set __FS's left margin to LMARGIN and return the old value. */
-extern size_t argp_fmtstream_set_lmargin (argp_fmtstream_t __fs,
- size_t __lmargin);
-extern size_t __argp_fmtstream_set_lmargin (argp_fmtstream_t __fs,
- size_t __lmargin);
-
-/* Set __FS's right margin to __RMARGIN and return the old value. */
-extern size_t argp_fmtstream_set_rmargin (argp_fmtstream_t __fs,
- size_t __rmargin);
-extern size_t __argp_fmtstream_set_rmargin (argp_fmtstream_t __fs,
- size_t __rmargin);
-
-/* Set __FS's wrap margin to __WMARGIN and return the old value. */
-extern size_t argp_fmtstream_set_wmargin (argp_fmtstream_t __fs,
- size_t __wmargin);
-extern size_t __argp_fmtstream_set_wmargin (argp_fmtstream_t __fs,
- size_t __wmargin);
-
-/* Return the column number of the current output point in __FS. */
-extern size_t argp_fmtstream_point (argp_fmtstream_t __fs);
-extern size_t __argp_fmtstream_point (argp_fmtstream_t __fs);
-#endif
-
-/* Internal routines. */
-extern void _argp_fmtstream_update (argp_fmtstream_t __fs);
-extern void __argp_fmtstream_update (argp_fmtstream_t __fs);
-extern int _argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
-extern int __argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
-\f
-#ifdef __OPTIMIZE__
-/* Inline versions of above routines. */
-
-#if !_LIBC
-#define __argp_fmtstream_putc argp_fmtstream_putc
-#define __argp_fmtstream_puts argp_fmtstream_puts
-#define __argp_fmtstream_write argp_fmtstream_write
-#define __argp_fmtstream_set_lmargin argp_fmtstream_set_lmargin
-#define __argp_fmtstream_set_rmargin argp_fmtstream_set_rmargin
-#define __argp_fmtstream_set_wmargin argp_fmtstream_set_wmargin
-#define __argp_fmtstream_point argp_fmtstream_point
-#define __argp_fmtstream_update _argp_fmtstream_update
-#define __argp_fmtstream_ensure _argp_fmtstream_ensure
-#endif
-
-#ifndef ARGP_FS_EI
-# ifdef __GNUC__
- /* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
- inline semantics, unless -fgnu89-inline is used. It defines a macro
- __GNUC_STDC_INLINE__ to indicate this situation or a macro
- __GNUC_GNU_INLINE__ to indicate the opposite situation.
-
- GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
- semantics but warns, unless -fgnu89-inline is used:
- warning: C99 inline functions are not supported; using GNU89
- warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
- It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
-
- Whereas Apple GCC 4.0.1 build 5479 without -std=c99 or -std=gnu99
- implements the GNU C inline semantics and defines the macro
- __GNUC_GNU_INLINE__, but it does not warn and does not support
- __attribute__ ((__gnu_inline__)).
-
- All in all, these are the possible combinations. For every compiler,
- we need to choose ARGP_FS_EI so that the corresponding table cell
- contains an "ok".
-
- \ ARGP_FS_EI inline extern extern
- \ inline inline
- CC \ __attribute__
- ((gnu_inline))
-
- gcc 4.3.0 error ok ok
- gcc 4.3.0 -std=gnu99 -fgnu89-inline error ok ok
- gcc 4.3.0 -std=gnu99 ok error ok
-
- gcc 4.2.2 error ok ok
- gcc 4.2.2 -std=gnu99 -fgnu89-inline error ok ok
- gcc 4.2.2 -std=gnu99 error warning ok
-
- gcc 4.1.2 error ok warning
- gcc 4.1.2 -std=gnu99 error ok warning
-
- Apple gcc 4.0.1 error ok warning
- Apple gcc 4.0.1 -std=gnu99 ok error warning
- */
-# if defined __GNUC_STDC_INLINE__
-# define ARGP_FS_EI inline
-# elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)
-# define ARGP_FS_EI extern inline __attribute__ ((__gnu_inline__))
-# else
-# define ARGP_FS_EI extern inline
-# endif
-# else
- /* With other compilers, assume the ISO C99 meaning of 'inline', if
- the compiler supports 'inline' at all. */
-# define ARGP_FS_EI inline
-# endif
-#endif
-
-ARGP_FS_EI size_t
-__argp_fmtstream_write (argp_fmtstream_t __fs,
- const char *__str, size_t __len)
-{
- if (__fs->p + __len <= __fs->end || __argp_fmtstream_ensure (__fs, __len))
- {
- memcpy (__fs->p, __str, __len);
- __fs->p += __len;
- return __len;
- }
- else
- return 0;
-}
-
-ARGP_FS_EI int
-__argp_fmtstream_puts (argp_fmtstream_t __fs, const char *__str)
-{
- size_t __len = strlen (__str);
- if (__len)
- {
- size_t __wrote = __argp_fmtstream_write (__fs, __str, __len);
- return __wrote == __len ? 0 : -1;
- }
- else
- return 0;
-}
-
-ARGP_FS_EI int
-__argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch)
-{
- if (__fs->p < __fs->end || __argp_fmtstream_ensure (__fs, 1))
- return *__fs->p++ = __ch;
- else
- return EOF;
-}
-
-/* Set __FS's left margin to __LMARGIN and return the old value. */
-ARGP_FS_EI size_t
-__argp_fmtstream_set_lmargin (argp_fmtstream_t __fs, size_t __lmargin)
-{
- size_t __old;
- if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
- __argp_fmtstream_update (__fs);
- __old = __fs->lmargin;
- __fs->lmargin = __lmargin;
- return __old;
-}
-
-/* Set __FS's right margin to __RMARGIN and return the old value. */
-ARGP_FS_EI size_t
-__argp_fmtstream_set_rmargin (argp_fmtstream_t __fs, size_t __rmargin)
-{
- size_t __old;
- if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
- __argp_fmtstream_update (__fs);
- __old = __fs->rmargin;
- __fs->rmargin = __rmargin;
- return __old;
-}
-
-/* Set FS's wrap margin to __WMARGIN and return the old value. */
-ARGP_FS_EI size_t
-__argp_fmtstream_set_wmargin (argp_fmtstream_t __fs, size_t __wmargin)
-{
- size_t __old;
- if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
- __argp_fmtstream_update (__fs);
- __old = __fs->wmargin;
- __fs->wmargin = __wmargin;
- return __old;
-}
-
-/* Return the column number of the current output point in __FS. */
-ARGP_FS_EI size_t
-__argp_fmtstream_point (argp_fmtstream_t __fs)
-{
- if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
- __argp_fmtstream_update (__fs);
- return __fs->point_col >= 0 ? __fs->point_col : 0;
-}
-
-#if !_LIBC
-#undef __argp_fmtstream_putc
-#undef __argp_fmtstream_puts
-#undef __argp_fmtstream_write
-#undef __argp_fmtstream_set_lmargin
-#undef __argp_fmtstream_set_rmargin
-#undef __argp_fmtstream_set_wmargin
-#undef __argp_fmtstream_point
-#undef __argp_fmtstream_update
-#undef __argp_fmtstream_ensure
-#endif
-
-#endif /* __OPTIMIZE__ */
-
-#endif /* ARGP_FMTSTREAM_USE_LINEWRAP */
-
-#endif /* argp-fmtstream.h */
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