/* human.h -- print human readable file size Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. 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 2, 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Written by Paul Eggert and Larry McVoy. */ #ifndef HUMAN_H_ # define HUMAN_H_ 1 # include <limits.h> # include <stdbool.h> # include <stdint.h> # include <unistd.h> /* A conservative bound on the maximum length of a human-readable string. The output can be the square of the largest uintmax_t, so double its size before converting to a bound. log10 (2.0) < 146/485. Add 1 for integer division truncation. Also, the output can have a thousands separator between every digit, so multiply by MB_LEN_MAX + 1 and then subtract MB_LEN_MAX. Append 1 for a space before the suffix. Finally, append 3, the maximum length of a suffix. */ # define LONGEST_HUMAN_READABLE \ ((2 * sizeof (uintmax_t) * CHAR_BIT * 146 / 485 + 1) * (MB_LEN_MAX + 1) \ - MB_LEN_MAX + 1 + 3) /* Options for human_readable. */ enum { /* Unless otherwise specified these options may be ORed together. */ /* The following three options are mutually exclusive. */ /* Round to plus infinity (default). */ human_ceiling = 0, /* Round to nearest, ties to even. */ human_round_to_nearest = 1, /* Round to minus infinity. */ human_floor = 2, /* Group digits together, e.g. `1,000,000'. This uses the locale-defined grouping; the traditional C locale does not group, so this has effect only if some other locale is in use. */ human_group_digits = 4, /* When autoscaling, suppress ".0" at end. */ human_suppress_point_zero = 8, /* Scale output and use SI-style units, ignoring the output block size. */ human_autoscale = 16, /* Prefer base 1024 to base 1000. */ human_base_1024 = 32, /* Prepend " " before unit symbol. */ human_space_before_unit = 64, /* Append SI prefix, e.g. "k" or "M". */ human_SI = 128, /* Append "B" (if base 1000) or "iB" (if base 1024) to SI prefix. */ human_B = 256 }; char *human_readable (uintmax_t, char *, int, uintmax_t, uintmax_t); int human_options (char const *, bool, uintmax_t *); #endif /* HUMAN_H_ */