84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
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Copyright (c) 2006 Alex Tingle
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef FLOOD_UTILS_H
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#define FLOOD_UTILS_H
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#include <string.h>
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#include <sstream>
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#include <stdio.h>
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#include <string>
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#include <list>
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/*
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#define ERR(x) { \
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std::stringstream s; \
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s<<FloodUtils::getpid()<<": "<<x<<"\n"; \
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fprintf(stderr,s.str().c_str()); \
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}
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*/
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#define ROOT_PATH "/opt/storage/srtm/Eurasia"
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#if DEBUG_OUTPUT
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# define DEBUG_ONLY(x) x
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# define DB(x) ERR("[DEBUG] "<<x)
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#else
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# define DEBUG_ONLY(x)
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# define DB(x)
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#endif
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namespace FloodUtils {
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/** Integer square root.
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* Algorithm by Jack W. Crenshaw: http://www.embedded.com/98/9802fe2.htm
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*/
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unsigned short sqrt(unsigned long a);
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/** Tokenise a string. */
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std::list<std::string> split(const std::string& s, char token=',');
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void googleXY_to_latlng(
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double x, double y, int zoom,
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double& lng, double& lat
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);
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void googleX_to_lng(int zoom, double x, double& lng);
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void googleY_to_lat(int zoom, double y, double& lat);
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/** Calculate the number of tiles in x or y dimensions at a zoom level. */
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inline long googleMaxTiles(int zoom) { return( 1L << (17 - zoom) ); }
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/* Specs. & semantics from:
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* http://www.courtesan.com/todd/papers/strlcpy.html
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*/
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size_t strlcpy(char* dst, const char* src, size_t bufsize);
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size_t strlcat(char* dst, const char* src, size_t bufsize);
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/** Convenience function for debug output */
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int getpid();
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/** Convenience function for getting env vars as strings. */
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const char* getenvz(const char* name, const char* dflt ="");
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/** Check for the existence of the names file. */
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bool exists(const char* path);
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}
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#endif // FLOOD_UTILS_H
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