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-rw-r--r--tdeioslave/imap4/mimehdrline.cpp521
1 files changed, 521 insertions, 0 deletions
diff --git a/tdeioslave/imap4/mimehdrline.cpp b/tdeioslave/imap4/mimehdrline.cpp
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+++ b/tdeioslave/imap4/mimehdrline.cpp
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+/***************************************************************************
+ mimehdrline.cpp - description
+ -------------------
+ begin : Wed Oct 11 2000
+ copyright : (C) 2000 by Sven Carstens
+ email : s.carstens@gmx.de
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ ***************************************************************************/
+
+#include <config.h>
+#include <iostream>
+#include <ctype.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "mimehdrline.h"
+#include "rfcdecoder.h"
+
+using namespace std;
+
+const char *wdays[] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+};
+
+const char *months[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+
+mimeHdrLine::mimeHdrLine ():
+mimeValue ((const char *) NULL), mimeLabel ((const char *) NULL)
+{
+}
+
+mimeHdrLine::mimeHdrLine (const TQCString & aLabel, const TQCString & aValue):
+mimeValue (aValue),
+mimeLabel (aLabel)
+{
+}
+
+mimeHdrLine::mimeHdrLine (mimeHdrLine * aHdrLine):
+mimeValue (aHdrLine->mimeValue), mimeLabel (aHdrLine->mimeLabel)
+{
+}
+
+mimeHdrLine::~mimeHdrLine ()
+{
+}
+
+int
+mimeHdrLine::appendStr (const char *inCStr)
+{
+ int retVal = 0;
+ int skip;
+ char *aCStr = (char *) inCStr;
+
+ if (aCStr)
+ {
+ skip = skipWS (aCStr);
+ if (skip && !mimeLabel.isEmpty ())
+ {
+ if (skip > 0)
+ {
+ mimeValue += TQCString (aCStr, skip + 1);
+ aCStr += skip;
+ retVal += skip;
+ skip = parseFullLine (aCStr);
+ mimeValue += TQCString (aCStr, skip + 1);
+ retVal += skip;
+ aCStr += skip;
+ }
+ }
+ else
+ {
+ if (mimeLabel.isEmpty ())
+ return setStr (aCStr);
+ }
+ }
+ return retVal;
+}
+
+/** parse a Line into the class
+move input ptr accordingly
+and report characters slurped */
+int
+mimeHdrLine::setStr (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+// char *begin = aCStr;
+ mimeLabel = TQCString ((const char *) NULL);
+ mimeValue = TQCString ((const char *) NULL);
+
+ if (aCStr)
+ {
+ // can't have spaces on normal lines
+ if (!skipWS (aCStr))
+ {
+ int label = 0, advance;
+ while ((advance = parseWord (&aCStr[label])))
+ {
+ label += advance;
+ }
+ if (label && aCStr[label - 1] != ':')
+ retVal = 0;
+ else
+ {
+ mimeLabel = TQCString (aCStr, label); //length including zero
+ retVal += label;
+ aCStr += label;
+ }
+ }
+ if (retVal)
+ {
+ int skip;
+ skip = skipWS (aCStr);
+ if (skip < 0)
+ skip *= -1;
+ aCStr += skip;
+ retVal += skip;
+ skip = parseFullLine (aCStr);
+ mimeValue = TQCString (aCStr, skip + 1);
+ retVal += skip;
+ aCStr += skip;
+ }
+ else
+ {
+ //Skip malformed line
+ while (*aCStr && *aCStr != '\r' && *aCStr != '\n')
+ {
+ retVal--;
+ aCStr++;
+ }
+ if (*aCStr == '\r')
+ {
+ retVal--;
+ aCStr++;
+ }
+ if (*aCStr == '\n')
+ {
+ retVal--;
+ aCStr++;
+ }
+ }
+ }
+ else
+ {
+ //debug
+ }
+ return retVal;
+}
+
+/** slurp one word*/
+int
+mimeHdrLine::parseWord (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+
+ if (aCStr && *aCStr)
+ {
+ if (*aCStr == '"')
+ return mimeHdrLine::parseQuoted ('"', '"', aCStr);
+ else
+ return mimeHdrLine::parseHalfWord (aCStr);
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** slurp one word*/
+int
+mimeHdrLine::parseQuoted (char startQuote, char endQuote, const char *inCStr)
+{
+ char *aCStr = (char *) inCStr;
+ int retVal = 0;
+
+ if (aCStr && *aCStr)
+ {
+ if (*aCStr == startQuote)
+ {
+ aCStr++;
+ retVal++;
+ }
+ else
+ return 0;
+ while (*aCStr && *aCStr != endQuote)
+ {
+ //skip over backticks
+ if (*aCStr == '\\')
+ {
+ aCStr++;
+ retVal++;
+ }
+ //eat this
+ aCStr++;
+ retVal++;
+ }
+ if (*aCStr == endQuote)
+ {
+ aCStr++;
+ retVal++;
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** slurp one alphanumerical word without continuation*/
+int
+mimeHdrLine::parseAlphaNum (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+
+ if (aCStr)
+ {
+ while (*aCStr && isalnum (*aCStr))
+ {
+ //skip over backticks
+ if (*aCStr == '\\')
+ {
+ aCStr++;
+ retVal++;
+ }
+ //eat this
+ aCStr++;
+ retVal++;
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+int
+mimeHdrLine::parseHalfWord (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+
+ if (aCStr && *aCStr)
+ {
+ if (isalnum (*aCStr))
+ return mimeHdrLine::parseAlphaNum (aCStr);
+ //skip over backticks
+ if (*aCStr == '\\')
+ {
+ aCStr++;
+ retVal++;
+ }
+ else if (!isspace (*aCStr))
+ {
+ //eat this
+ aCStr++;
+ retVal++;
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** slurp one line without continuation*/
+int
+mimeHdrLine::parseHalfLine (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+
+ if (aCStr)
+ {
+ while (*aCStr && *aCStr != '\n')
+ {
+ //skip over backticks
+ if (*aCStr == '\\')
+ {
+ aCStr++;
+ retVal++;
+ }
+ //eat this
+ aCStr++;
+ retVal++;
+ }
+ if (*aCStr == '\n')
+ {
+ aCStr++;
+ retVal++;
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** skip all white space characters including continuation*/
+int
+mimeHdrLine::skipWS (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+
+ if (aCStr && *aCStr)
+ {
+ while (*aCStr == ' ' || *aCStr == '\t')
+ {
+ aCStr++;
+ retVal++;
+ }
+ //check out for continuation lines
+ if (*aCStr == '\r')
+ {
+ aCStr++;
+ retVal++;
+ }
+ if (*aCStr++ == '\n')
+ if (*aCStr == '\t' || *aCStr == ' ')
+ {
+ int skip = mimeHdrLine::skipWS (aCStr);
+ if (skip < 0)
+ skip *= -1;
+ retVal += 1 + skip;
+ }
+ else
+ {
+ retVal = -retVal - 1;
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** parses continuated lines */
+int
+mimeHdrLine::parseFullLine (const char *inCStr)
+{
+ int retVal = 0;
+ char *aCStr = (char *) inCStr;
+ int skip;
+
+ if (aCStr)
+ {
+ //skip leading white space
+ skip = skipWS (aCStr);
+ if (skip > 0)
+ {
+ aCStr += skip;
+ retVal += skip;
+ }
+ while (*aCStr)
+ {
+ int advance;
+
+ if ((advance = parseHalfLine (aCStr)))
+ {
+ retVal += advance;
+ aCStr += advance;
+ }
+ else if ((advance = skipWS (aCStr)))
+ {
+ if (advance > 0)
+ {
+ retVal += advance;
+ aCStr += advance;
+ }
+ else
+ {
+ retVal -= advance;
+ break;
+ }
+ }
+ else
+ break;
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** parses continuated lines */
+int
+mimeHdrLine::parseSeparator (char separator, const char *inCStr)
+{
+ char *aCStr = (char *) inCStr;
+ int retVal = 0;
+ int skip;
+
+ if (aCStr)
+ {
+ //skip leading white space
+ skip = skipWS (aCStr);
+ if (skip > 0)
+ {
+ aCStr += skip;
+ retVal += skip;
+ }
+ while (*aCStr)
+ {
+ int advance;
+
+ if (*aCStr != separator)
+ {
+ if ((advance = mimeHdrLine::parseWord (aCStr)))
+ {
+ retVal += advance;
+ aCStr += advance;
+ }
+ else if ((advance = mimeHdrLine::skipWS (aCStr)))
+ {
+ if (advance > 0)
+ {
+ retVal += advance;
+ aCStr += advance;
+ }
+ else
+ {
+ retVal -= advance;
+ break;
+ }
+ }
+ else
+ break;
+ }
+ else
+ {
+ //include separator in result
+ retVal++;
+ aCStr++;
+ break;
+ }
+ }
+ }
+ else
+ {
+ //debug();
+ }
+ return retVal;
+}
+
+/** return the label */
+
+const TQCString&
+mimeHdrLine::getLabel ()
+{
+ return mimeLabel;
+}
+
+/** return the value */
+const TQCString&
+mimeHdrLine::getValue ()
+{
+ return mimeValue;
+}
+
+
+// FIXME: very inefficient still
+TQCString
+mimeHdrLine::truncateLine(TQCString aLine, unsigned int truncate)
+{
+ int cutHere;
+ TQCString retVal;
+ uint len = aLine.length();
+
+ // see if we have a line of the form "key: value" (like "Subject: bla")
+ // then we do not want to truncate between key and value
+ int validStart = aLine.find(": ");
+ if (validStart > -1) {
+ validStart += 2;
+ }
+ while (len > truncate) {
+ cutHere = aLine.findRev(' ', truncate);
+ if (cutHere < 1 || cutHere < validStart) {
+ cutHere = aLine.findRev('\t', truncate);
+ if (cutHere < 1) {
+ cutHere = aLine.find(' ', 1);
+ if (cutHere < 1) {
+ cutHere = aLine.find('\t', 1);
+ if (cutHere < 1) {
+ // simply truncate
+ return aLine.left(truncate);
+ }
+ }
+ }
+ }
+
+ retVal += aLine.left(cutHere) + '\n';
+ int chop = len - cutHere;
+ aLine = aLine.right(chop);
+ len -= chop;
+ }
+ retVal += aLine;
+
+ return retVal;
+}
+
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