/usr/include/mathic/ColumnPrinter.h is in libmathic-dev 1.0~git20160320-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | #ifndef MATHIC_COLUMN_PRINTER_GUARD
#define MATHIC_COLUMN_PRINTER_GUARD
#include "stdinc.h"
#include <sstream>
#include <vector>
#include <cstdio>
#include <memory>
#include <string>
namespace mathic {
class ColumnPrinter {
public:
ColumnPrinter(size_t columnCount = 0);
void setPrefix(const std::string& prefix);
std::ostream& addColumn(
bool flushLeft = true,
const std::string& prefix = " ",
const std::string& suffix = ""
);
size_t getColumnCount() const;
std::ostream& operator[](size_t col);
/// Inserts a newline after padding the current line with repeatThis
/// chars until it fills the column width.
void repeatToEndOfLine(const char repeatThis, size_t col);
/// Works on all columns.
void repeatToEndOfLine(const char repeatThis);
void print(std::ostream& out) const;
/// Returns "123,456,789" for parameter value 123456789.
static std::string commafy(unsigned long long l);
/// Returns "123.4G" for parameter value 123456789. So the SI prefix is a
/// suffix of the returned string, yet it is still called an SI *prefix*
/// because these are usually used as prefixes to units such as in Km.
static std::string withSIPrefix(unsigned long long l);
/** returns (3,100) as "3.0%". */
static std::string percentInteger(
unsigned long long numerator,
unsigned long long denominator
);
static std::string percentDouble(double numerator, double denominator);
/** returns (3,100) as " 3.0%". The string always has the same length for
ratios equal to or less than 999.9%. */
static std::string percentIntegerFixed(
unsigned long long numerator,
unsigned long long denominator);
/** returns 0.7565 as "75.7%". */
static std::string percentDouble(double ratio);
/** Returns (7,4) as "1.8" */
static std::string ratioInteger(
unsigned long long numerator,
unsigned long long denominator
);
static std::string ratioDouble(double numerator, double denominator);
/** Returns d as a string printed to 1 decimal place, rounding up at 0.5 */
static std::string oneDecimal(double d);
/** Prints as X bytes, X kilobytes, X megabytes etc. */
static std::string bytesInUnit(unsigned long long bytes);
private:
struct Col {
std::string prefix;
std::stringstream text;
std::string suffix;
bool flushLeft;
std::vector<std::pair<size_t, char> > repeatToEndOfLine;
};
std::vector<std::unique_ptr<Col>> _cols;
std::string _prefix;
};
std::ostream& operator<<(std::ostream& out, const ColumnPrinter& printer);
void print(FILE* out, const ColumnPrinter& pr);
}
#endif
|