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522 lines
9.5 KiB
522 lines
9.5 KiB
/***************************************************************************
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mimehdrline.cpp - description
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-------------------
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begin : Wed Oct 11 2000
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copyright : (C) 2000 by Sven Carstens
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email : s.carstens@gmx.de
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <config.h>
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#include <iostream>
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "mimehdrline.h"
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#include "rfcdecoder.h"
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using namespace std;
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const char *wdays[] = {
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"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
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};
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const char *months[] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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mimeHdrLine::mimeHdrLine ():
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mimeValue ((const char *) NULL), mimeLabel ((const char *) NULL)
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{
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}
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mimeHdrLine::mimeHdrLine (const TQCString & aLabel, const TQCString & aValue):
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mimeValue (aValue),
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mimeLabel (aLabel)
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{
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}
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mimeHdrLine::mimeHdrLine (mimeHdrLine * aHdrLine):
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mimeValue (aHdrLine->mimeValue), mimeLabel (aHdrLine->mimeLabel)
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{
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}
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mimeHdrLine::~mimeHdrLine ()
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{
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}
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int
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mimeHdrLine::appendStr (const char *inCStr)
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{
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int retVal = 0;
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int skip;
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char *aCStr = (char *) inCStr;
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if (aCStr)
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{
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skip = skipWS (aCStr);
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if (skip && !mimeLabel.isEmpty ())
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{
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if (skip > 0)
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{
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mimeValue += TQCString (aCStr, skip + 1);
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aCStr += skip;
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retVal += skip;
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skip = parseFullLine (aCStr);
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mimeValue += TQCString (aCStr, skip + 1);
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retVal += skip;
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aCStr += skip;
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}
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}
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else
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{
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if (mimeLabel.isEmpty ())
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return setStr (aCStr);
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}
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}
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return retVal;
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}
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/** parse a Line into the class
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move input ptr accordingly
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and report characters slurped */
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int
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mimeHdrLine::setStr (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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// char *begin = aCStr;
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mimeLabel = TQCString ((const char *) NULL);
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mimeValue = TQCString ((const char *) NULL);
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if (aCStr)
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{
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// can't have spaces on normal lines
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if (!skipWS (aCStr))
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{
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int label = 0, advance;
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while ((advance = parseWord (&aCStr[label])))
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{
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label += advance;
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}
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if (label && aCStr[label - 1] != ':')
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retVal = 0;
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else
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{
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mimeLabel = TQCString (aCStr, label); //length including zero
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retVal += label;
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aCStr += label;
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}
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}
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if (retVal)
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{
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int skip;
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skip = skipWS (aCStr);
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if (skip < 0)
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skip *= -1;
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aCStr += skip;
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retVal += skip;
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skip = parseFullLine (aCStr);
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mimeValue = TQCString (aCStr, skip + 1);
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retVal += skip;
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aCStr += skip;
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}
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else
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{
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//Skip malformed line
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while (*aCStr && *aCStr != '\r' && *aCStr != '\n')
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{
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retVal--;
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aCStr++;
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}
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if (*aCStr == '\r')
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{
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retVal--;
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aCStr++;
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}
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if (*aCStr == '\n')
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{
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retVal--;
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aCStr++;
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}
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}
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}
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else
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{
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//debug
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}
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return retVal;
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}
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/** slurp one word*/
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int
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mimeHdrLine::parseWord (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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if (aCStr && *aCStr)
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{
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if (*aCStr == '"')
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return mimeHdrLine::parseQuoted ('"', '"', aCStr);
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else
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return mimeHdrLine::parseHalfWord (aCStr);
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** slurp one word*/
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int
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mimeHdrLine::parseQuoted (char startQuote, char endQuote, const char *inCStr)
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{
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char *aCStr = (char *) inCStr;
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int retVal = 0;
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if (aCStr && *aCStr)
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{
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if (*aCStr == startQuote)
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{
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aCStr++;
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retVal++;
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}
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else
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return 0;
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while (*aCStr && *aCStr != endQuote)
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{
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//skip over backticks
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if (*aCStr == '\\')
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{
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aCStr++;
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retVal++;
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}
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//eat this
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aCStr++;
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retVal++;
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}
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if (*aCStr == endQuote)
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{
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aCStr++;
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retVal++;
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** slurp one alphanumerical word without continuation*/
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int
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mimeHdrLine::parseAlphaNum (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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if (aCStr)
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{
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while (*aCStr && isalnum (*aCStr))
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{
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//skip over backticks
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if (*aCStr == '\\')
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{
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aCStr++;
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retVal++;
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}
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//eat this
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aCStr++;
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retVal++;
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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int
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mimeHdrLine::parseHalfWord (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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if (aCStr && *aCStr)
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{
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if (isalnum (*aCStr))
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return mimeHdrLine::parseAlphaNum (aCStr);
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//skip over backticks
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if (*aCStr == '\\')
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{
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aCStr++;
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retVal++;
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}
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else if (!isspace (*aCStr))
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{
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//eat this
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aCStr++;
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retVal++;
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** slurp one line without continuation*/
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int
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mimeHdrLine::parseHalfLine (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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if (aCStr)
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{
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while (*aCStr && *aCStr != '\n')
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{
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//skip over backticks
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if (*aCStr == '\\')
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{
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aCStr++;
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retVal++;
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}
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//eat this
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aCStr++;
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retVal++;
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}
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if (*aCStr == '\n')
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{
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aCStr++;
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retVal++;
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** skip all white space characters including continuation*/
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int
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mimeHdrLine::skipWS (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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if (aCStr && *aCStr)
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{
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while (*aCStr == ' ' || *aCStr == '\t')
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{
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aCStr++;
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retVal++;
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}
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//check out for continuation lines
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if (*aCStr == '\r')
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{
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aCStr++;
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retVal++;
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}
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if (*aCStr++ == '\n')
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if (*aCStr == '\t' || *aCStr == ' ')
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{
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int skip = mimeHdrLine::skipWS (aCStr);
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if (skip < 0)
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skip *= -1;
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retVal += 1 + skip;
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}
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else
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{
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retVal = -retVal - 1;
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** parses continuated lines */
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int
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mimeHdrLine::parseFullLine (const char *inCStr)
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{
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int retVal = 0;
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char *aCStr = (char *) inCStr;
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int skip;
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if (aCStr)
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{
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//skip leading white space
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skip = skipWS (aCStr);
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if (skip > 0)
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{
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aCStr += skip;
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retVal += skip;
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}
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while (*aCStr)
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{
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int advance;
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if ((advance = parseHalfLine (aCStr)))
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{
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retVal += advance;
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aCStr += advance;
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}
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else if ((advance = skipWS (aCStr)))
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{
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if (advance > 0)
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{
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retVal += advance;
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aCStr += advance;
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}
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else
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{
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retVal -= advance;
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break;
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}
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}
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else
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break;
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** parses continuated lines */
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int
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mimeHdrLine::parseSeparator (char separator, const char *inCStr)
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{
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char *aCStr = (char *) inCStr;
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int retVal = 0;
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int skip;
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if (aCStr)
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{
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//skip leading white space
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skip = skipWS (aCStr);
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if (skip > 0)
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{
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aCStr += skip;
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retVal += skip;
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}
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while (*aCStr)
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{
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int advance;
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if (*aCStr != separator)
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{
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if ((advance = mimeHdrLine::parseWord (aCStr)))
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{
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retVal += advance;
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aCStr += advance;
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}
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else if ((advance = mimeHdrLine::skipWS (aCStr)))
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{
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if (advance > 0)
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{
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retVal += advance;
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aCStr += advance;
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}
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else
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{
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retVal -= advance;
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break;
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}
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}
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else
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break;
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}
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else
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{
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//include separator in result
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retVal++;
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aCStr++;
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break;
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}
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}
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}
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else
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{
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//debug();
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}
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return retVal;
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}
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/** return the label */
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const TQCString&
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mimeHdrLine::getLabel ()
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{
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return mimeLabel;
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}
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/** return the value */
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const TQCString&
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mimeHdrLine::getValue ()
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{
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return mimeValue;
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}
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// FIXME: very inefficient still
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TQCString
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mimeHdrLine::truncateLine(TQCString aLine, unsigned int truncate)
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{
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int cutHere;
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TQCString retVal;
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uint len = aLine.length();
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// see if we have a line of the form "key: value" (like "Subject: bla")
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// then we do not want to truncate between key and value
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int validStart = aLine.find(": ");
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if (validStart > -1) {
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validStart += 2;
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}
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while (len > truncate) {
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cutHere = aLine.findRev(' ', truncate);
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if (cutHere < 1 || cutHere < validStart) {
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cutHere = aLine.findRev('\t', truncate);
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if (cutHere < 1) {
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cutHere = aLine.find(' ', 1);
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if (cutHere < 1) {
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cutHere = aLine.find('\t', 1);
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if (cutHere < 1) {
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// simply truncate
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return aLine.left(truncate);
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}
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}
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}
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}
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retVal += aLine.left(cutHere) + '\n';
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int chop = len - cutHere;
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aLine = aLine.right(chop);
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len -= chop;
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}
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retVal += aLine;
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return retVal;
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}
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