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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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