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Diffstat (limited to 'stdio/linewrap.h')
| -rw-r--r-- | stdio/linewrap.h | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/stdio/linewrap.h b/stdio/linewrap.h deleted file mode 100644 index 5aad9f62e2..0000000000 --- a/stdio/linewrap.h +++ /dev/null @@ -1,200 +0,0 @@ -/* Word-wrapping and line-truncating streams. - Copyright (C) 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef __LINEWRAP_H__ -#define __LINEWRAP_H__ - -#include <stdio.h> -#include <ctype.h> -#include <string.h> - -#include <features.h> - -#include <string.h> /* Need size_t. */ - -__BEGIN_DECLS - -/* We keep this data for each line-wrapping stream. */ -struct line_wrap_data - { - size_t lmargin, rmargin; /* Left and right margins. */ - ssize_t wmargin; /* Margin to wrap to, or -1 to truncate. */ - - /* Point in stdio 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; - - /* Original cookie and hooks from the stream. */ - void *cookie; - void (*output) (FILE *, int); - __io_close_fn *close; - __io_fileno_fn *fileno; - __io_seek_fn *seek; - }; - -/* Modify STREAM so that it 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 STREAM after modifying it, or - NULL if there was an error. */ -FILE *line_wrap_stream (FILE *stream, - size_t lmargin, size_t rmargin, ssize_t wmargin); - -/* Remove the hooks placed in STREAM by `line_wrap_stream'. */ -void line_unwrap_stream (FILE *stream); - -/* Returns true if STREAM is line wrapped. */ -extern inline int line_wrapped (FILE *stream); - -/* If STREAM is not line-wrapped return -1, else return its left margin. */ -extern size_t line_wrap_lmargin (FILE *stream); - -/* If STREAM is not line-wrapped return -1, else set its left margin to - LMARGIN and return the old value. */ -extern size_t line_wrap_set_lmargin (FILE *stream, size_t lmargin); - -/* If STREAM is not line-wrapped return -1, else return its left margin. */ -extern size_t line_wrap_rmargin (FILE *stream); - -/* If STREAM is not line-wrapped return -1, else set its right margin to - RMARGIN and return the old value. */ -extern size_t line_wrap_set_rmargin (FILE *stream, size_t rmargin); - -/* If STREAM is not line-wrapped return -1, else return its wrap margin. */ -extern size_t line_wrap_wmargin (FILE *stream); - -/* If STREAM is not line-wrapped return -1, else set its left margin to - WMARGIN and return the old value. */ -extern size_t line_wrap_set_wmargin (FILE *stream, size_t wmargin); - -/* If STREAM is not line-wrapped return -1, else return the column number of - the current output point. */ -extern size_t line_wrap_point (FILE *stream); - -#ifdef __OPTIMIZE__ - -extern void __line_wrap_output (FILE *, int); /* private */ - -/* If STREAM is not line-wrapped, return 0. Otherwise all pending text - buffered text in STREAM so that the POINT_OFFS field refers to the last - position in the stdio buffer, and return the line wrap state object for - STREAM. Since all text has been processed, this means that (1) the - POINT_COL field refers to the column at which any new text would be added, - and (2) any changes to the margin parameters will only affect new text. */ -extern struct line_wrap_data *__line_wrap_update (FILE *stream); /* private */ - -/* Returns true if STREAM is line wrapped. */ -extern inline int -line_wrapped (FILE *stream) -{ - return (stream->__room_funcs.__output == &__line_wrap_output); -} - -/* If STREAM is not line-wrapped return -1, else return its left margin. */ -extern inline size_t -line_wrap_lmargin (FILE *stream) -{ - if (! line_wrapped (stream)) - return -1; - return ((struct line_wrap_data *)stream->__cookie)->lmargin; -} - -/* If STREAM is not line-wrapped return -1, else set its left margin to - LMARGIN and return the old value. */ -extern inline size_t -line_wrap_set_lmargin (FILE *stream, size_t lmargin) -{ - struct line_wrap_data *d = __line_wrap_update (stream); - if (d) - { - size_t old = d->lmargin; - d->lmargin = lmargin; - return old; - } - else - return -1; -} - -/* If STREAM is not line-wrapped return -1, else return its left margin. */ -extern inline size_t -line_wrap_rmargin (FILE *stream) -{ - if (! line_wrapped (stream)) - return -1; - return ((struct line_wrap_data *)stream->__cookie)->rmargin; -} - -/* If STREAM is not line-wrapped return -1, else set its right margin to - RMARGIN and return the old value. */ -extern inline size_t -line_wrap_set_rmargin (FILE *stream, size_t rmargin) -{ - struct line_wrap_data *d = __line_wrap_update (stream); - if (d) - { - size_t old = d->rmargin; - d->rmargin = rmargin; - return old; - } - else - return -1; -} - -/* If STREAM is not line-wrapped return -1, else return its wrap margin. */ -extern inline size_t -line_wrap_wmargin (FILE *stream) -{ - if (! line_wrapped (stream)) - return -1; - return ((struct line_wrap_data *)stream->__cookie)->wmargin; -} - -/* If STREAM is not line-wrapped return -1, else set its left margin to - WMARGIN and return the old value. */ -extern inline size_t -line_wrap_set_wmargin (FILE *stream, size_t wmargin) -{ - struct line_wrap_data *d = __line_wrap_update (stream); - if (d) - { - size_t old = d->wmargin; - d->wmargin = wmargin; - return old; - } - else - return -1; -} - -/* If STREAM is not line-wrapped return -1, else return the column number of - the current output point. */ -extern inline size_t -line_wrap_point (FILE *stream) -{ - struct line_wrap_data *d = __line_wrap_update (stream); - return d ? (d->point_col >= 0 ? d->point_col : 0) : -1; -} - -#endif /* Optimizing. */ - -__END_DECLS - -#endif /* __LINEWRAP_H__ */ |