/usr/include/kpathsea/fn.h is in libkpathsea-dev 2009-11ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | /* fn.h: arbitrarily long filenames (or just strings).
Copyright 2001, 2005 Olaf Weber.
Copyright 1993, 2008 Karl Berry.
This 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.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, see <http://www.gnu.org/licenses/>. */
#ifndef KPATHSEA_FN_H
#define KPATHSEA_FN_H
#include <kpathsea/c-proto.h>
#include <kpathsea/types.h>
/* Arbitrarily long filenames; it's inconvenient to use obstacks here,
because we want to maintain a null terminator. Also used for
dynamically growing strings even when the null byte isn't necessary,
e.g., in `variable.c', since I don't want to pass obstacks around
everywhere, and one can't free parts of an obstack arbitrarily. */
typedef struct
{
string str;
unsigned allocated;
unsigned length; /* includes the terminating null byte, if any */
} fn_type;
#define FN_STRING(fn) ((fn).str)
#define FN_ALLOCATED(fn) ((fn).allocated)
#define FN_LENGTH(fn) ((fn).length)
/* Create a new empty fn. */
extern KPSEDLL fn_type fn_init (void);
/* Create a new fn from the first LEN characters from S and a null. */
extern KPSEDLL fn_type fn_copy0 (const_string s, unsigned len);
/* Free what's been allocated. Can also just free the string if it's
been extracted out. Fatal error if nothing allocated in F. */
extern KPSEDLL void fn_free (fn_type *f);
/* Append the character C to the fn F. Don't append trailing null. */
extern KPSEDLL void fn_1grow (fn_type *f, char c);
/* Append LENGTH bytes from SOURCE to F. */
extern KPSEDLL void fn_grow (fn_type *f, const_string source, unsigned length);
/* Concatenate the component S to the fn F. Assumes string currently in
F is null terminated. */
extern KPSEDLL void fn_str_grow (fn_type *f, const_string s);
/* Add a null to F's string at position LOC, and update its length.
Fatal error if LOC is past the end of the string. */
extern KPSEDLL void fn_shrink_to (fn_type *f, unsigned loc);
#endif /* not KPATHSEA_FN_H */
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