hexview.cpp

Linux下的C、C＋＋ IDE

#include "hexview.h"

#include <qlistview.h>
#include <qlayout.h>
#include <qfont.h>

#include <cstring>

HexView::HexView(QWidget *parent, 
		 const char *name, 
		 const char *title,
		 const char *data)
	: QDialog(parent, name)
{
	QVBoxLayout *vbox = new QVBoxLayout(this);

	listView = new QListView(this);
	listView->addColumn("Offset");
	listView->addColumn("Bytes");
	listView->addColumn("ASCII");
	listView->setSorting(-1);
	listView->setSelectionMode(QListView::NoSelection);
	listView->setFont(QFont("Courier", 14));

	vbox->addWidget(listView);

	resize(675, 500);
	
	display(title, data);
}

int HexView::exec()
{
	return QDialog::exec();
}

void HexView::display(const char *title, const char *data)
{
	QString hexit = "", offsetline = "", hexline = "", asciiline = "", pad = "";
	int charcnt = 0, offset = 0;
	unsigned len = strlen(data), j = 0;
	QListViewItem *item = 0;

	setCaption((QString) title + " (Hex View)");
	
	listView->clear();
	
	for (unsigned i=0; i < len; i++)
	{
		charcnt++;

		hexit = (QString) hexit.sprintf("%x", data[i]);

		if (hexit.length() == 1)
			hexit = (QString) "0" + hexit;

		hexline += (QString) " " + hexit;

		if ((data[i] < '\x20') || (data[i] > '\x7e'))
			asciiline += " ";
		else
			asciiline += data[i];

		if (charcnt == 16)
		{
			offsetline = offsetline.sprintf("%x", offset);

			for (j=0; j < (8 - offsetline.length()); j++)
				pad += (QString) "0";

			offsetline = (QString) "0x" + pad + offsetline;
	
			hexline += " ";

			item = new QListViewItem(listView, listView->lastItem());
			item->setText(0, offsetline);
			item->setText(1, hexline);
			item->setText(2, asciiline);

			charcnt = 0;
			hexline = asciiline = pad = "";

			offset += 16;
		}
	}

	if (charcnt)
	{
		offsetline = offsetline.sprintf("%x", offset);

		for (j=0; j < (8 - offsetline.length()); j++)
			pad += "0";

		offsetline = (QString) "0x" + pad + offsetline;

		hexline += " ";

		item = new QListViewItem(listView, listView->lastItem());
		item->setText(0, offsetline);
		item->setText(1, hexline);
		item->setText(2, asciiline);
	}
}