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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This 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 of the License, or
* (at your option) any later version.
*
* This software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <sys/time.h>
#include <rfb/util.h>
namespace rfb {
void CharArray::format(const char *fmt, ...) {
va_list ap;
int len;
va_start(ap, fmt);
len = vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
delete [] buf;
if (len < 0) {
buf = new char[1];
buf[0] = '\0';
return;
}
buf = new char[len+1];
va_start(ap, fmt);
vsnprintf(buf, len+1, fmt, ap);
va_end(ap);
}
char* strDup(const char* s) {
if (!s) return 0;
int l = strlen(s);
char* r = new char[l+1];
memcpy(r, s, l+1);
return r;
};
void strFree(char* s) {
delete [] s;
}
bool strSplit(const char* src, const char limiter, char** out1, char** out2, bool fromEnd) {
CharArray out1old, out2old;
if (out1) out1old.buf = *out1;
if (out2) out2old.buf = *out2;
int len = strlen(src);
int i=0, increment=1, limit=len;
if (fromEnd) {
i=len-1; increment = -1; limit = -1;
}
while (i!=limit) {
if (src[i] == limiter) {
if (out1) {
*out1 = new char[i+1];
if (i) memcpy(*out1, src, i);
(*out1)[i] = 0;
}
if (out2) {
*out2 = new char[len-i];
if (len-i-1) memcpy(*out2, &src[i+1], len-i-1);
(*out2)[len-i-1] = 0;
}
return true;
}
i+=increment;
}
if (out1) *out1 = strDup(src);
if (out2) *out2 = 0;
return false;
}
bool strContains(const char* src, char c) {
int l=strlen(src);
for (int i=0; i<l; i++)
if (src[i] == c) return true;
return false;
}
void strCopy(char* dest, const char* src, int destlen) {
if (src)
strncpy(dest, src, destlen-1);
dest[src ? destlen-1 : 0] = 0;
}
unsigned msBetween(const struct timeval *first,
const struct timeval *second)
{
unsigned diff;
diff = (second->tv_sec - first->tv_sec) * 1000;
diff += second->tv_usec / 1000;
diff -= first->tv_usec / 1000;
return diff;
}
unsigned msSince(const struct timeval *then)
{
struct timeval now;
gettimeofday(&now, NULL);
return msBetween(then, &now);
}
bool isBefore(const struct timeval *first,
const struct timeval *second)
{
if (first->tv_sec < second->tv_sec)
return true;
if (first->tv_sec > second->tv_sec)
return false;
if (first->tv_usec < second->tv_usec)
return true;
return false;
}
static size_t doPrefix(long long value, const char *unit,
char *buffer, size_t maxlen,
unsigned divisor, const char **prefixes,
size_t prefixCount, int precision) {
double newValue;
size_t prefix, len;
newValue = value;
prefix = 0;
while (newValue >= divisor) {
if (prefix >= prefixCount)
break;
newValue /= divisor;
prefix++;
}
len = snprintf(buffer, maxlen, "%.*g %s%s", precision, newValue,
(prefix == 0) ? "" : prefixes[prefix-1], unit);
buffer[maxlen-1] = '\0';
return len;
}
static const char *siPrefixes[] =
{ "k", "M", "G", "T", "P", "E", "Z", "Y" };
static const char *iecPrefixes[] =
{ "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
size_t siPrefix(long long value, const char *unit,
char *buffer, size_t maxlen, int precision) {
return doPrefix(value, unit, buffer, maxlen, 1000, siPrefixes,
sizeof(siPrefixes)/sizeof(*siPrefixes),
precision);
}
size_t iecPrefix(long long value, const char *unit,
char *buffer, size_t maxlen, int precision) {
return doPrefix(value, unit, buffer, maxlen, 1024, iecPrefixes,
sizeof(iecPrefixes)/sizeof(*iecPrefixes),
precision);
}
};
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