wsutil/str_util.h

   1 /* str_util.h
   2  * String utility definitions
   3  *
   4  * $Id$
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  */
  24
  25 #ifndef __STR_UTIL_H__
  26 #define __STR_UTIL_H__
  27
  28 #include "ws_symbol_export.h"
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif /* __cplusplus */
  33
  34 /** Convert all upper-case ASCII letters to their ASCII lower-case
  35  *  equivalents, in place, with a simple non-locale-dependent
  36  *  ASCII mapping (A-Z -> a-z).
  37  *  All other characters are left unchanged, as the mapping to
  38  *  lower case may be locale-dependent.
  39  *
  40  *  The string is assumed to be in a character encoding, such as
  41  *  an ISO 8859 or other EUC encoding, or UTF-8, in which all
  42  *  bytes in the range 0x00 through 0x7F are ASCII characters and
  43  *  non-ASCII characters are constructed from one or more bytes in
  44  *  the range 0x80 through 0xFF.
  45  *
  46  * @param str The string to be lower-cased.
  47  * @return    ptr to the string
  48  */
  49 WS_DLL_PUBLIC
  50 gchar *ascii_strdown_inplace(gchar *str);
  51
  52 /** Convert all lower-case ASCII letters to their ASCII upper-case
  53  *  equivalents, in place, with a simple non-locale-dependent
  54  *  ASCII mapping (a-z -> A-Z).
  55  *  All other characters are left unchanged, as the mapping to
  56  *  lower case may be locale-dependent.
  57  *
  58  *  The string is assumed to be in a character encoding, such as
  59  *  an ISO 8859 or other EUC encoding, or UTF-8, in which all
  60  *  bytes in the range 0x00 through 0x7F are ASCII characters and
  61  *  non-ASCII characters are constructed from one or more bytes in
  62  *  the range 0x80 through 0xFF.
  63  *
  64  * @param str The string to be upper-cased.
  65  * @return    ptr to the string
  66  */
  67 WS_DLL_PUBLIC
  68 gchar *ascii_strup_inplace(gchar *str);
  69
  70 /** Check if an entire string consists of printable characters
  71  *
  72  * @param string The string to be checked
  73  * @return       TRUE if the entire string is printable, otherwise FALSE
  74  */
  75 WS_DLL_PUBLIC
  76 gboolean isprint_string(const gchar *string);
  77
  78 /** Check if an entire string consists of digits
  79  *
  80  * @param string The string to be checked
  81  * @return       TRUE if the entire string is digits, otherwise FALSE
  82  */
  83 WS_DLL_PUBLIC
  84 gboolean isdigit_string(guchar *string);
  85
  86 typedef enum {
  87     format_size_unit_none    = 0,       /**< No unit will be appended. You must supply your own. */
  88     format_size_unit_bytes   = 1,       /**< "bytes" for un-prefixed sizes, "B" otherwise. */
  89     format_size_unit_bits    = 2,       /**< "bits" for un-prefixed sizes, "b" otherwise. */
  90     format_size_unit_bits_s  = 3,       /**< "bits/s" for un-prefixed sizes, "bps" otherwise. */
  91     format_size_unit_bytes_s = 4,       /**< "bytes/s" for un-prefixed sizes, "Bps" otherwise. */
  92     format_size_prefix_si    = 0 << 8,  /**< SI (power of 1000) prefixes will be used. */
  93     format_size_prefix_iec   = 1 << 8   /**< IEC (power of 1024) prefixes will be used. */
  94     /* XXX format_size_prefix_default_for_this_particular_os ? */
  95 } format_size_flags_e;
  96
  97 /** Given a size, return its value in a human-readable format
  98  *
  99  * Prefixes up to "T/Ti" (tera, tebi) are currently supported.
 100  *
 101  * @param size The size value
 102  * @param flags Flags to control the output (unit of measurement,
 103  * SI vs IEC, etc). Unit and prefix flags may be ORed together.
 104  * @return A newly-allocated string representing the value.
 105  */
 106 WS_DLL_PUBLIC
 107 gchar *format_size(gint64 size, format_size_flags_e flags);
 108
 109
 110 #ifdef __cplusplus
 111 }
 112
 113 /* Should we just have separate unit and prefix enums instead? */
 114 extern format_size_flags_e operator|(format_size_flags_e lhs, format_size_flags_e rhs);
 115 #endif /* __cplusplus */
 116
 117 #endif /* __STR_UTIL_H__ */