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/* str_util.c
* String utility routines
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include "str_util.h"
int
ws_xton(char ch)
{
switch (ch) {
case '0': return 0;
case '1': return 1;
case '2': return 2;
case '3': return 3;
case '4': return 4;
case '5': return 5;
case '6': return 6;
case '7': return 7;
case '8': return 8;
case '9': return 9;
case 'a': case 'A': return 10;
case 'b': case 'B': return 11;
case 'c': case 'C': return 12;
case 'd': case 'D': return 13;
case 'e': case 'E': return 14;
case 'f': case 'F': return 15;
default: return -1;
}
}
/* Convert all ASCII letters to lower case, in place. */
gchar *
ascii_strdown_inplace(gchar *str)
{
gchar *s;
for (s = str; *s; s++)
/* What 'g_ascii_tolower (gchar c)' does, this should be slightly more efficient */
*s = g_ascii_isupper (*s) ? *s - 'A' + 'a' : *s;
return (str);
}
/* Convert all ASCII letters to upper case, in place. */
gchar *
ascii_strup_inplace(gchar *str)
{
gchar *s;
for (s = str; *s; s++)
/* What 'g_ascii_toupper (gchar c)' does, this should be slightly more efficient */
*s = g_ascii_islower (*s) ? *s - 'a' + 'A' : *s;
return (str);
}
/* Check if an entire string is printable. */
gboolean
isprint_string(const gchar *str)
{
guint pos;
/* Loop until we reach the end of the string (a null) */
for(pos = 0; str[pos] != '\0'; pos++){
if(!g_ascii_isprint(str[pos])){
/* The string contains a non-printable character */
return FALSE;
}
}
/* The string contains only printable characters */
return TRUE;
}
/* Check if an entire UTF-8 string is printable. */
gboolean
isprint_utf8_string(const gchar *str, guint length)
{
const char *c;
if (!g_utf8_validate (str, length, NULL)) {
return FALSE;
}
for (c = str; *c; c = g_utf8_next_char(c)) {
if (!g_unichar_isprint(g_utf8_get_char(c))) {
return FALSE;
}
}
return TRUE;
}
/* Check if an entire string is digits. */
gboolean
isdigit_string(const guchar *str)
{
guint pos;
/* Loop until we reach the end of the string (a null) */
for(pos = 0; str[pos] != '\0'; pos++){
if(!g_ascii_isdigit(str[pos])){
/* The string contains a non-digit character */
return FALSE;
}
}
/* The string contains only digits */
return TRUE;
}
#define FORMAT_SIZE_UNIT_MASK 0x00ff
#define FORMAT_SIZE_PFX_MASK 0xff00
static const char *thousands_grouping_fmt = NULL;
DIAG_OFF(format)
static void test_printf_thousands_grouping(void) {
/* test whether g_printf works with "'" flag character */
gchar *str = g_strdup_printf("%'d", 22);
if (g_strcmp0(str, "22") == 0) {
thousands_grouping_fmt = "%'"G_GINT64_MODIFIER"d";
} else {
/* Don't use */
thousands_grouping_fmt = "%"G_GINT64_MODIFIER"d";
}
g_free(str);
}
DIAG_ON(format)
/* Given a size, return its value in a human-readable format */
/* This doesn't handle fractional values. We might want to make size a double. */
gchar *
format_size(gint64 size, format_size_flags_e flags)
{
GString *human_str = g_string_new("");
int power = 1000;
int pfx_off = 0;
gboolean is_small = FALSE;
static const gchar *prefix[] = {" T", " G", " M", " k", " Ti", " Gi", " Mi", " Ki"};
gchar *ret_val;
if (thousands_grouping_fmt == NULL)
test_printf_thousands_grouping();
if ((flags & FORMAT_SIZE_PFX_MASK) == format_size_prefix_iec) {
pfx_off = 4;
power = 1024;
}
if (size / power / power / power / power >= 10) {
g_string_printf(human_str, thousands_grouping_fmt, size / power / power / power / power);
g_string_append(human_str, prefix[pfx_off]);
} else if (size / power / power / power >= 10) {
g_string_printf(human_str, thousands_grouping_fmt, size / power / power / power);
g_string_append(human_str, prefix[pfx_off+1]);
} else if (size / power / power >= 10) {
g_string_printf(human_str, thousands_grouping_fmt, size / power / power);
g_string_append(human_str, prefix[pfx_off+2]);
} else if (size / power >= 10) {
g_string_printf(human_str, thousands_grouping_fmt, size / power);
g_string_append(human_str, prefix[pfx_off+3]);
} else {
g_string_printf(human_str, thousands_grouping_fmt, size);
is_small = TRUE;
}
switch (flags & FORMAT_SIZE_UNIT_MASK) {
case format_size_unit_none:
break;
case format_size_unit_bytes:
g_string_append(human_str, is_small ? " bytes" : "B");
break;
case format_size_unit_bits:
g_string_append(human_str, is_small ? " bits" : "b");
break;
case format_size_unit_bits_s:
g_string_append(human_str, is_small ? " bits/s" : "bps");
break;
case format_size_unit_bytes_s:
g_string_append(human_str, is_small ? " bytes/s" : "Bps");
break;
case format_size_unit_packets:
g_string_append(human_str, is_small ? " packets" : "packets");
break;
case format_size_unit_packets_s:
g_string_append(human_str, is_small ? " packets/s" : "packets/s");
break;
default:
g_assert_not_reached();
}
ret_val = g_string_free(human_str, FALSE);
return g_strchomp(ret_val);
}
gchar
printable_char_or_period(gchar c)
{
return g_ascii_isprint(c) ? c : '.';
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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