mbstrbuf Class Reference

#include <mbstrbuf.h>

Collaboration diagram for mbstrbuf:

Public Member Functions
	mbstrbuf (unsigned l=0)
std::ostream &	stats (std::ostream &out)
void	make_room (unsigned newlen)
void	return_cursor (unsigned newcursor=0)
void	print_str (const char *str)
void	print_double (const char *fmt, double d)
const char *	get_buf (void) const
unsigned	get_len (void) const

Private Attributes
unsigned	len
unsigned	cursor
char *	buf

Friends
std::ostream &	operator<< (std::ostream &, const mbstrbuf &)

Detailed Description

Definition at line 37 of file mbstrbuf.h.

Constructor & Destructor Documentation

mbstrbuf::mbstrbuf ( unsigned  l = 0 )

inline

Definition at line 46 of file mbstrbuf.h.

References buf, and len.

                                 : len(l), cursor(0), buf(0) {
                if (len > 0) {
                        buf = new char[len];
                }
        };

Member Function Documentation

const char * mbstrbuf::get_buf

(

void

)

const

Definition at line 99 of file mbstrbuf.cc.

References buf.

{
        return buf;
}

unsigned mbstrbuf::get_len

(

void

)

const

Definition at line 105 of file mbstrbuf.cc.

References len.

{
        return len;
}

void mbstrbuf::make_room

(

unsigned

newlen

)

Definition at line 47 of file mbstrbuf.cc.

References buf, cursor, and len.

Referenced by print_double(), and print_str().

{
        newlen = std::max(cursor + 2*newlen, 2*len);
        char *ptr = new char[newlen];
        memcpy(ptr, buf, cursor);
        delete[] buf;
        buf = ptr;
        len = newlen;
}

void mbstrbuf::print_double	(	const char *	fmt,
		double	d
	)

Definition at line 83 of file mbstrbuf.cc.

References buf, cursor, len, and make_room().

{
        int dlen, buflen;

retry:;
        buflen = len - cursor;
        dlen = snprintf(&buf[cursor], buflen, fmt, d);
        if (dlen >= buflen) {
                make_room(dlen);
                goto retry;
        }

        cursor += dlen;
}

Here is the call graph for this function:

void mbstrbuf::print_str

(

const char *

str

)

Definition at line 65 of file mbstrbuf.cc.

References buf, cursor, len, and make_room().

{
        int slen, buflen;

retry:;
        buflen = len - cursor;
        slen = strlen(str);
        if (slen >= buflen) {
                make_room(slen);
                goto retry;
        }

        memcpy(&buf[cursor], str, slen);
        cursor += slen;
        buf[cursor] = '\0';
}

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void mbstrbuf::return_cursor

(

unsigned

newcursor = 0

)

Definition at line 58 of file mbstrbuf.cc.

References cursor.

{
        cursor = newcursor;
}

std::ostream & mbstrbuf::stats

(

std::ostream &

out

)

Definition at line 40 of file mbstrbuf.cc.

References cursor, and len.

{
        return out << "len=" << len << "; cursor=" << cursor << std::endl;
}

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  , const mbstrbuf &    )

friend

Definition at line 111 of file mbstrbuf.cc.

{
        return out << buf.buf;
}

Member Data Documentation

char* mbstrbuf::buf

private

Definition at line 43 of file mbstrbuf.h.

Referenced by get_buf(), make_room(), mbstrbuf(), operator<<(), print_double(), and print_str().

unsigned mbstrbuf::cursor

private

Definition at line 42 of file mbstrbuf.h.

Referenced by make_room(), print_double(), print_str(), return_cursor(), and stats().

unsigned mbstrbuf::len

private

Definition at line 41 of file mbstrbuf.h.

Referenced by get_len(), make_room(), mbstrbuf(), print_double(), print_str(), and stats().

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The documentation for this class was generated from the following files:

• mbstrbuf.h
• mbstrbuf.cc