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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <iomanip>
#include <map>
#include <sstream>
#include <string>
#include <vector>
#include <memory>
namespace storage {
class HtmlTable;
struct Column {
enum Color { DEFAULT_COLOR, LIGHT_GREEN, LIGHT_RED, LIGHT_YELLOW };
enum Alignment { DEFAULT_ALIGNMENT, LEFT, CENTER, RIGHT };
std::map<uint16_t, Color> _colors;
std::string _colName;
Alignment _alignment;
enum { TOTAL = 0xffff };
Column(const std::string& colName, HtmlTable* table = 0);
virtual ~Column();
virtual void finalize() {} // Called before print is issued
static void printTdColor(std::ostream& out, Color c) {
switch (c) {
case LIGHT_GREEN: out << " bgcolor=\"#a0ffa0\""; break;
case LIGHT_RED: out << " bgcolor=\"#ffa0a0\""; break;
case LIGHT_YELLOW: out << " bgcolor=\"#ffffa0\""; break;
case DEFAULT_COLOR: break;
}
}
virtual void printElementStart(std::ostream& out, uint16_t row) {
std::map<uint16_t, Color>::iterator color(_colors.find(row));
out << "<td";
if (color != _colors.end()) printTdColor(out, color->second);
switch (_alignment) {
case LEFT: out << " align=\"left\""; break;
case CENTER: out << " align=\"center\""; break;
case RIGHT: out << " align=\"right\""; break;
case DEFAULT_ALIGNMENT: break;
}
out << ">";
}
virtual void printElementStop(std::ostream& out, [[maybe_unused]] uint16_t row) {
out << "</td>";
}
virtual void printElement(std::ostream& out, uint16_t row) {
printElementStart(out, row);
printValue(out, row);
printElementStop(out, row);
}
virtual void printValue(std::ostream& out, uint16_t) {
out << " ";
}
};
struct ColHeader {
std::string _name;
uint32_t _span;
ColHeader(const std::string& name, uint32_t span)
: _name(name), _span(span) {}
};
struct RowHeader {
std::string _name;
Column::Color _backgroundColor;
RowHeader(const std::string& s)
: _name(s), _backgroundColor(Column::DEFAULT_COLOR) {}
};
class HtmlTable {
std::string _rowId;
std::vector<Column*> _columns;
std::vector<RowHeader> _rows;
std::vector<ColHeader> _colHeaders;
std::unique_ptr<std::string> _totalRow;
public:
HtmlTable(const std::string& rowId);
~HtmlTable();
void addTotalRow(const std::string& name)
{ _totalRow.reset(new std::string(name)); }
void addColumnHeader(const std::string& name, uint32_t span)
{ _colHeaders.push_back(ColHeader(name, span)); }
void addColumn(Column& col) { _columns.push_back(&col); }
void addRow(const std::string& rowName) { _rows.push_back(rowName); }
void addRow(uint64_t id)
{ std::ostringstream ost; ost << id; _rows.push_back(ost.str()); }
void setRowHeaderColor(Column::Color c)
{ _rows.back()._backgroundColor = c; }
uint32_t getRowCount() const { return _rows.size(); }
void print(std::ostream& out);
};
/** Writes content just as you supply it. */
template<typename T>
struct ValueColumn : public Column {
std::map<uint16_t, T> _values;
std::string _denomination;
// Show all values <=T as color.
std::map<T, Color> _colorLimits;
std::ostringstream _valuePrinter;
bool _totalIsAvg;
ValueColumn(const std::string& colName,
const std::string& denomination = "",
HtmlTable* table = 0);
~ValueColumn();
T& operator[](uint16_t row) { return _values[row]; }
ValueColumn<T>& setPrecision(int precision) {
_valuePrinter << std::setprecision(precision);
return *this;
}
ValueColumn<T>& setTotalAsAverage(bool setAsAvg = true) {
_totalIsAvg = setAsAvg;
return *this;
}
void addColorLimit(T limit, Color c) {
_colorLimits[limit] = c;
}
void finalize() override;
virtual T getTotalValue();
void printValue(std::ostream& out, uint16_t row) override;
};
/** Writes content as percentage of a total */
struct PercentageColumn : public ValueColumn<double> {
uint64_t _total;
std::map<uint16_t, uint64_t> _values;
PercentageColumn(const std::string& colName, uint64_t total = 0, HtmlTable* table = 0);
~PercentageColumn();
void finalize() override;
uint64_t& operator[](uint16_t row) { return _values[row]; }
};
/** Writes content as a byte size, using an appropriate size. */
struct ByteSizeColumn : public ValueColumn<uint64_t> {
std::pair<const char*, uint64_t> _denomination;
ByteSizeColumn(const std::string& colName, HtmlTable* table = 0)
: ValueColumn<uint64_t>(colName, "", table) {}
uint64_t& operator[](uint16_t row) { return _values[row]; }
void finalize() override;
void printValue(std::ostream& out, uint16_t row) override;
};
using LongColumn = ValueColumn<int64_t>;
using DoubleColumn = ValueColumn<double>;
} // storage
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