/*
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is Web Sniffer.
 * 
 * The Initial Developer of the Original Code is Erik van der Poel.
 * Portions created by Erik van der Poel are
 * Copyright (C) 1998,1999,2000 Erik van der Poel.
 * All Rights Reserved.
 * 
 * Contributor(s): 
 */

#include <malloc.h>
#include <stdio.h>
#include <string.h>

#include "http.h"
#include "html.h"
#include "io.h"
#include "view.h"

#define CONTROL_START "<font color=#FF0000>"
#define CONTROL(str) CONTROL_START str CONTROL_END
#define CONTROL_END "</font>"
#define NL "<br>"

static int verbose = 0;

static void
print(View *view, Input *input)
{
	char		buf[1024];
	char		*hex;
	char		hexBuf[4];
	int		i;
	unsigned long	inLen;
	unsigned long	j;
	int		len;
	char		*p;
	char		*replacement;
	char		*result;
	unsigned char	*str;

	hex = "0123456789ABCDEF";
	str = copyMemory(input, &inLen);

	buf[1] = 0;
	len = 0;
	p = NULL;
	result = NULL;

	for (i = 0; i < 2; i++)
	{
		for (j = 0; j < inLen; j++)
		{
			switch (str[j])
			{
			case '\r':
				if (str[j + 1] == '\n')
				{
					j++;
					replacement = CONTROL("CRLF") NL;
				}
				else
				{
					replacement = CONTROL("CR") NL;
				}
				break;
			case '\n':
				replacement = CONTROL("LF") NL;
				break;
			case '\t':
				replacement = CONTROL("TAB");
				break;
			case 0x1b:
				replacement = CONTROL("ESC");
				break;
			case '<':
				replacement = "&lt;";
				break;
			case '>':
				replacement = "&gt;";
				break;
			case '&':
				replacement = "&amp;";
				break;
			case '\\':
			case '"':
				if (view->backslash)
				{
					buf[0] = '\\';
					buf[1] = str[j];
					buf[2] = 0;
				}
				else
				{
					buf[0] = str[j];
					buf[1] = 0;
				}
				replacement = buf;
				break;
			default:
				if ((str[j] <= 0x1f) || (str[j] >= 0x7f))
				{
					replacement = buf;
					strcpy(buf, CONTROL_START);
					hexBuf[0] = 'x';
					hexBuf[1] = hex[str[j] >> 4];
					hexBuf[2] = hex[str[j] & 0x0f];
					hexBuf[3] = 0;
					strcat(buf, hexBuf);
					strcat(buf, CONTROL_END);
				}
				else
				{
					replacement = buf;
					buf[0] = str[j];
					buf[1] = 0;
				}
				break;
			}
			if (result)
			{
				strcpy(p, replacement);
				p += strlen(replacement);
			}
			else
			{
				len += strlen(replacement);
			}
		}
		if (!result)
		{
			result = calloc(len + 1, 1);
			if (!result)
			{
				fprintf(stderr,
					"cannot calloc toHTML string\n");
				exit(0);
			}
			p = result;
		}
	}

	fprintf(view->out, "%s", result);

	free(result);
	free(str);
}

void
viewHTML(View *view, Input *input)
{
	fprintf(view->out, "<font color=#009900>");
	print(view, input);
	fprintf(view->out, "</font>");
}

void
viewHTMLAttributeName(View *view, Input *input)
{
	fprintf(view->out, "<font color=#FF6600>");
	print(view, input);
	fprintf(view->out, "</font>");
}

void
viewHTMLAttributeValue(View *view, Input *input)
{
	fprintf(view->out, "<font color=#3333FF>");
	print(view, input);
	fprintf(view->out, "</font>");
}

void
viewHTMLTag(View *view, Input *input)
{
	fprintf(view->out, "<font color=#CC33CC>");
	print(view, input);
	fprintf(view->out, "</font>");
}

void
viewHTMLText(View *view, Input *input)
{
	print(view, input);
}

void
viewHTTP(View *view, Input *input)
{
	print(view, input);
}

void
viewHTTPHeaderName(View *view, Input *input)
{
	fprintf(view->out, "<font color=#FF6600>");
	print(view, input);
	fprintf(view->out, "</font>");
}

void
viewHTTPHeaderValue(View *view, Input *input)
{
	fprintf(view->out, "<font color=#3333FF>");
	print(view, input);
	fprintf(view->out, "</font>");
}

void
viewVerbose(void)
{
	verbose = 1;
}

void
viewReport(View *view, char *str)
{
	if (verbose)
	{
         	fprintf(view->out, (char *) escapeHTML((unsigned char *) str));
		fprintf(view->out, "<br>");
		fflush(view->out);
	}
}

View *
viewAlloc(void)
{
	View	*view;

	view = calloc(sizeof(View), 1);
	if (!view)
	{
		fprintf(stderr, "cannot calloc View\n");
		exit(0);
	}

	return view;
}