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#ifndef _FORMAT_H
#define _FORMAT_H
#include "journal.h"
#include "expr.h"
#include "walk.h"
namespace ledger {
DECLARE_EXCEPTION(format_error, std::runtime_error);
class format_t : public noncopyable
{
struct element_t : public noncopyable
{
#define ELEMENT_ALIGN_LEFT 0x01
#define ELEMENT_HIGHLIGHT 0x02
enum kind_t {
STRING,
EXPR,
#if 0
DEPTH_SPACER
#endif
};
kind_t type;
unsigned char flags;
unsigned char min_width;
unsigned char max_width;
string chars;
expr_t expr;
scoped_ptr<struct element_t> next;
element_t() throw()
: type(STRING), flags(false), min_width(0), max_width(0) {
TRACE_CTOR(element_t, "");
}
~element_t() throw() {
TRACE_DTOR(element_t);
}
friend inline void mark_red(std::ostream& out, const element_t * elem) {
out.setf(std::ios::left);
out.width(0);
out << "\e[31m";
if (elem->flags & ELEMENT_ALIGN_LEFT)
out << std::left;
else
out << std::right;
if (elem->min_width > 0)
out.width(elem->min_width);
}
void dump(std::ostream& out) const;
};
string format_string;
scoped_ptr<element_t> elements;
enum elision_style_t {
TRUNCATE_TRAILING,
TRUNCATE_MIDDLE,
TRUNCATE_LEADING,
ABBREVIATE
};
static elision_style_t elision_style;
static int abbrev_length;
static bool ansi_codes;
static bool ansi_invert;
static element_t * parse_elements(const string& fmt);
public:
format_t() {
TRACE_CTOR(format_t, "");
}
format_t(const string& _format) {
TRACE_CTOR(format_t, "const string&");
parse(_format);
}
~format_t() {
TRACE_DTOR(format_t);
}
void parse(const string& _format) {
elements.reset(parse_elements(_format));
format_string = _format;
}
void format(std::ostream& out, scope_t& scope);
void dump(std::ostream& out) const {
for (const element_t * elem = elements.get();
elem;
elem = elem->next.get())
elem->dump(out);
}
static string truncate(const string& str, unsigned int width,
const bool is_account = false);
};
} // namespace ledger
#endif // _FORMAT_H
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