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/*-----------------------------------------------------------*- c++ -*-\
| ____ _ __ __ ___ |
| |__ / \ / / . \ . \ |
| / / \ V /| _/ _/ |
| / /__ | | | | | | |
| /_____||_| |_| |_| |
| |
\---------------------------------------------------------------------*/
#ifndef ZYPPER_TABULATOR_H
#define ZYPPER_TABULATOR_H
#include <string>
#include <iosfwd>
#include <list>
#include <vector>
using std::string;
using std::ostream;
using std::list;
using std::vector;
//! table style
enum TableStyle {
Ascii = 0, ///< | - +
Light,
Heavy,
Double,
Light3,
Heavy3,
LightHeavy,
LightDouble,
HeavyLight,
DoubleLight,
Colon,
none,
_End, ///< sentinel
};
enum class TableAlign {
LEFT, RIGHT
};
class Table;
class TableRow {
public:
//! Constructor. Reserve place for c columns.
TableRow (unsigned c = 0) {
_columns.reserve (c);
}
void add (const string& s);
// return number of columns
unsigned int cols( void ) const;
//! tab separated output
void dumbDumpTo (ostream &stream) const;
//! output with \a parent table attributes
void dumpTo (ostream & stream, const Table & parent) const;
typedef vector<string> container;
// BinaryPredicate
struct Less {
unsigned _by_column;
Less (unsigned by_column): _by_column (by_column) {}
bool operator ()(const TableRow& a, const TableRow& b) const {
return a._columns[_by_column] < b._columns[_by_column];
}
};
private:
container _columns;
friend class Table;
};
class TableHeader : public TableRow {
public:
//! Constructor. Reserve place for c columns.
TableHeader (unsigned c = 0): TableRow (c) {}
void add(const string& s, TableAlign align = TableAlign::LEFT);
TableAlign align(int c) const { return _aligns[c]; }
private:
vector<TableAlign> _aligns;
};
inline
TableRow& operator << (TableRow& tr, const string& s) {
tr.add (s);
return tr;
}
class Table {
public:
typedef list<TableRow> container;
static const unsigned int numStyles = _End;
void add (const TableRow& tr);
void setHeader (const TableHeader& tr);
void dumpTo (ostream& stream) const;
bool empty () const { return _rows.empty(); }
void sort (unsigned by_column); // columns start with 0...
void set_style(TableStyle st);
void wrap(int force_break_after = -1);
void set_abbrev(const vector<bool>& abbrev);
void margin(unsigned margin);
Table ();
private:
void dumpRule (ostream &stream) const;
void updateColWidths (const TableRow& tr);
bool _has_header;
TableHeader _header;
container _rows;
//! maximum column index seen in this table
unsigned _max_col;
//! maximum width of respective columns
mutable vector<unsigned> _max_width;
//! table width (columns)
int _width;
//! table style
TableStyle _style;
//! amount of space we have to print this table
int _screen_width;
//! whether to abbreviate the respective column if needed
vector<bool> _abbrev_col;
//! left/right margin in number of spaces
unsigned _margin;
//! if _do_wrap is set, first break the table at this column;
//! If negative, wrap as needed.
int _force_break_after;
//! Whether to wrap the table if it exceeds _screen_width
bool _do_wrap;
friend class TableRow;
};
inline
Table& operator << (Table& table, const TableRow& tr) {
table.add (tr);
return table;
}
inline
Table& operator << (Table& table, const TableHeader& tr) {
table.setHeader (tr);
return table;
}
inline
ostream& operator << (ostream& stream, const Table& table) {
table.dumpTo (stream);
return stream;
}
#endif
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