62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
#ifndef UTIL_HPP
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#define UTIL_HPP
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#include <string>
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#include <set>
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#include <algorithm>
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#include <sstream>
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#include <ostream>
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#include <tuple>
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#include <utility>
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namespace util {
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using stringvec = std::vector<std::string>;
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using stringset = std::set<std::string>;
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// String to lowercase/uppercase
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std::string tolower(std::string input);
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std::string toupper(std::string input);
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// Return true if the string can be parsed as an integer.
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bool validinteger(const std::string &value);
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// String to integer. Returns errval if the number is not parseable.
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int64_t strtoint(const std::string &value, int64_t errval);
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// Trim strings: left end, right end, both ends.
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std::string ltrim(std::string s);
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std::string rtrim(std::string s);
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std::string trim(std::string s);
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// Read a file as one big string.
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std::string get_file_contents(const std::string &path);
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// Read a file as a vector of lines.
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stringvec get_file_lines(const std::string &path);
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// Get a file's fingerprint - ie, size and modification time.
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std::string get_file_fingerprint(const std::string &path);
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// Calculate distance between two points
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double distance_squared(double x1, double y1, double x2, double y2);
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// Return a pseudorandom number which is a hash function of A,B,C.
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uint32_t hash3(uint32_t a, uint32_t b, uint32_t c);
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// Return a pseudorandom float between lo and hi inclusive.
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double hash_to_float(double lo, double hi, uint32_t a, uint32_t b, uint32_t c);
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// An XYZ coordinate, general purpose.
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struct XYZ {
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float x, y, z;
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XYZ() { x=0; y=0; z=0; }
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XYZ(float ix, float iy, float iz) { x=ix; y=iy; z=iz; }
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bool operator ==(const XYZ &o) const { return x==o.x && y == o.y && z==o.z; }
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bool operator !=(const XYZ &o) const { return x!=o.x || y != o.y || z!=o.z; }
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};
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std::ostream & operator << (std::ostream &out, const XYZ &xyz);
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} // namespace util
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#endif // UTIL_HPP
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