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tdepim/mimelib/mediatyp.cpp

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//=============================================================================
// File: mediatyp.cpp
// Contents: Definitions for DwMediaType
// Maintainer: Doug Sauder <dwsauder@fwb.gulf.net>
// WWW: http://www.fwb.gulf.net/~dwsauder/mimepp.html
//
// Copyright (c) 1996, 1997 Douglas W. Sauder
// All rights reserved.
//
// IN NO EVENT SHALL DOUGLAS W. SAUDER BE LIABLE TO ANY PARTY FOR DIRECT,
// INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
// THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF DOUGLAS W. SAUDER
// HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// DOUGLAS W. SAUDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT
// NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
// BASIS, AND DOUGLAS W. SAUDER HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
// SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
//
//=============================================================================
#define DW_IMPLEMENTATION
#include <mimelib/config.h>
#include <mimelib/debug.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <time.h>
#include <mimelib/string.h>
#include <mimelib/param.h>
#include <mimelib/mediatyp.h>
#include <mimelib/token.h>
#include <mimelib/utility.h>
#include <mimelib/enum.h>
const char* const DwMediaType::sClassName = "DwMediaType";
DwMediaType* (*DwMediaType::sNewMediaType)(const DwString&,
DwMessageComponent*) = 0;
DwMediaType* DwMediaType::NewMediaType(const DwString& aStr,
DwMessageComponent* aParent)
{
if (sNewMediaType) {
return sNewMediaType(aStr, aParent);
}
else {
return new DwMediaType(aStr, aParent);
}
}
DwMediaType::DwMediaType()
{
mType = DwMime::kTypeNull;
mSubtype = DwMime::kSubtypeNull;
mFirstParameter = 0;
mClassId = kCidMediaType;
mClassName = sClassName;
}
DwMediaType::DwMediaType(const DwMediaType& aCntType)
: DwFieldBody(aCntType),
mTypeStr(aCntType.mTypeStr),
mSubtypeStr(aCntType.mSubtypeStr),
mBoundaryStr(aCntType.mBoundaryStr)
{
mType = aCntType.mType;
mSubtype = aCntType.mSubtype;
mFirstParameter = 0;
if (aCntType.mFirstParameter) {
CopyParameterList(aCntType.mFirstParameter);
}
mClassId = kCidMediaType;
mClassName = sClassName;
}
DwMediaType::DwMediaType(const DwString& aStr, DwMessageComponent* aParent)
: DwFieldBody(aStr, aParent)
{
mType = DwMime::kTypeNull;
mSubtype = DwMime::kSubtypeNull;
mFirstParameter = 0;
mClassId = kCidMediaType;
mClassName = sClassName;
}
DwMediaType::~DwMediaType()
{
if (mFirstParameter) {
DeleteParameterList();
}
}
const DwMediaType& DwMediaType::operator = (const DwMediaType& aCntType)
{
if (this == &aCntType) return *this;
DwFieldBody::operator = (aCntType);
mType = aCntType.mType;
mSubtype = aCntType.mSubtype;
mTypeStr = aCntType.mTypeStr;
mSubtypeStr = aCntType.mSubtypeStr;
mBoundaryStr = aCntType.mBoundaryStr;
if (mFirstParameter) {
DeleteParameterList();
}
if (aCntType.mFirstParameter) {
CopyParameterList(aCntType.mFirstParameter);
}
if (mParent) {
mParent->SetModified();
}
return *this;
}
int DwMediaType::Type() const
{
return mType;
}
void DwMediaType::SetType(int aType)
{
mType = aType;
TypeEnumToStr();
SetModified();
}
const DwString& DwMediaType::TypeStr() const
{
return mTypeStr;
}
void DwMediaType::SetTypeStr(const DwString& aStr)
{
mTypeStr = aStr;
TypeStrToEnum();
SetModified();
}
int DwMediaType::Subtype() const
{
return mSubtype;
}
void DwMediaType::SetSubtype(int aSubtype)
{
mSubtype = aSubtype;
SubtypeEnumToStr();
SetModified();
}
const DwString& DwMediaType::SubtypeStr() const
{
return mSubtypeStr;
}
void DwMediaType::SetSubtypeStr(const DwString& aStr)
{
mSubtypeStr = aStr;
SubtypeStrToEnum();
SetModified();
}
const DwString& DwMediaType::Boundary() const
{
// Implementation note: this member function is const, which
// forbids us from assigning to mBoundaryStr. The following
// trick gets around this. (ANSI implementations could use the
// "mutable" declaration).
DwMediaType* _this = (DwMediaType*) this;
_this->mBoundaryStr = "";
DwParameter* param = mFirstParameter;
while (param) {
if (DwStrcasecmp(param->Attribute(), "boundary") == 0) {
// Boundary parameter found. Return its value.
_this->mBoundaryStr = param->Value();
break;
}
param = param->Next();
}
return mBoundaryStr;
}
void DwMediaType::SetBoundary(const DwString& aStr)
{
mBoundaryStr = aStr;
// Search for boundary parameter in parameter list. If found, set its
// value.
DwParameter* param = mFirstParameter;
while (param) {
if (DwStrcasecmp(param->Attribute(), "boundary") == 0) {
param->SetValue(mBoundaryStr);
return;
}
param = param->Next();
}
// Boundary parameter not found. Add it.
param = DwParameter::NewParameter("", 0);
param->SetAttribute("boundary");
param->SetValue(aStr);
AddParameter(param);
}
void DwMediaType::CreateBoundary(unsigned aLevel)
{
// Create a random printable string and set it as the boundary parameter
static const char c[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const int cLen = 64;
char buf[80];
strcpy(buf, "Boundary-");
int pos = strlen(buf);
int n = aLevel / 10;
buf[pos++] = (n % 10) + '0';
n = aLevel;
buf[pos++] = (n % 10) + '0';
buf[pos++] = '=';
buf[pos++] = '_';
DwUint32 r = (DwUint32) time(0);
buf[pos++] = c[r % cLen];
r /= cLen;
buf[pos++] = c[r % cLen];
r /= cLen;
buf[pos++] = c[r % cLen];
r /= cLen;
buf[pos++] = c[r % cLen];
r /= cLen;
buf[pos++] = c[r % cLen];
for (int i=0; i < 2; ++i) {
r = rand();
buf[pos++] = c[r % cLen];
r >>= 6;
buf[pos++] = c[r % cLen];
r >>= 6;
buf[pos++] = c[r % cLen];
r >>= 6;
buf[pos++] = c[r % cLen];
r >>= 6;
buf[pos++] = c[r % cLen];
}
buf[pos] = 0;
SetBoundary(buf);
}
const DwString& DwMediaType::Name() const
{
// Implementation note: this member function is const, which
// forbids us from assigning to mNameStr. The following
// trick gets around this. (ANSI implementations could use the
// "mutable" declaration).
DwMediaType* _this = (DwMediaType*) this;
_this->mNameStr = "";
DwParameter* param = mFirstParameter;
while (param) {
if (DwStrcasecmp(param->Attribute(), "name") == 0) {
// Name parameter found. Return its value.
_this->mNameStr = param->Value();
break;
}
param = param->Next();
}
return mNameStr;
}
void DwMediaType::SetName(const DwString& aStr)
{
mNameStr = aStr;
// Search for name parameter in parameter list. If found, set its
// value.
DwParameter* param = mFirstParameter;
while (param) {
if (DwStrcasecmp(param->Attribute(), "name") == 0) {
param->SetValue(mNameStr);
return;
}
param = param->Next();
}
// Name parameter not found. Add it.
param = DwParameter::NewParameter("", 0);
param->SetAttribute("name");
param->SetValue(aStr);
AddParameter(param);
}
DwParameter* DwMediaType::FirstParameter() const
{
return mFirstParameter;
}
void DwMediaType::AddParameter(DwParameter* aParam)
{
_AddParameter(aParam);
SetModified();
}
void DwMediaType::_AddParameter(DwParameter* aParam)
{
if (!mFirstParameter) {
mFirstParameter = aParam;
}
else {
DwParameter* cur = mFirstParameter;
DwParameter* next = cur->Next();
while (next) {
cur = next;
next = cur->Next();
}
cur->SetNext(aParam);
}
aParam->SetParent(this);
}
void DwMediaType::Parse()
{
mIsModified = 0;
mTypeStr = "";
mSubtypeStr = "";
mType = DwMime::kTypeNull;
mSubtype = DwMime::kSubtypeNull;
if (mFirstParameter) {
DeleteParameterList();
}
if (mString.length() == 0) return;
DwRfc1521Tokenizer tokenizer(mString);
// Get type.
int found = 0;
while (!found && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkToken) {
mTypeStr = tokenizer.Token();
found = 1;
}
++tokenizer;
}
// Get '/'
found = 0;
while (!found && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkTspecial
&& tokenizer.Token()[0] == '/') {
found = 1;
}
++tokenizer;
}
// Get subtype
found = 0;
while (!found && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkToken) {
mSubtypeStr = tokenizer.Token();
found = 1;
}
++tokenizer;
}
// Get parameters
DwTokenString tokenStr(mString);
while (1) {
// Get ';'
found = 0;
while (!found && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkTspecial
&& tokenizer.Token()[0] == ';') {
found = 1;
}
++tokenizer;
}
if (tokenizer.Type() == eTkNull) {
// No more parameters
break;
}
tokenStr.SetFirst(tokenizer);
// Get attribute
DwString attrib;
int attribFound = 0;
while (!attribFound && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkToken) {
attrib = tokenizer.Token();
attribFound = 1;
}
++tokenizer;
}
// Get '='
found = 0;
while (!found && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkTspecial
&& tokenizer.Token()[0] == '=') {
found = 1;
}
++tokenizer;
}
// Get value but do _not_ stop when finding a '/' in it
int valueFound = 0;
while (!valueFound && tokenizer.Type() != eTkNull) {
if (tokenizer.Type() == eTkToken
|| tokenizer.Type() == eTkQuotedString) {
++tokenizer;
if (tokenizer.Type() != eTkTspecial
|| tokenizer.Token()[0] != '/')
valueFound = 1;
}
else
++tokenizer;
}
if (attribFound && valueFound) {
tokenStr.ExtendTo(tokenizer);
DwParameter* param =
DwParameter::NewParameter(tokenStr.Tokens(), this);
param->Parse();
_AddParameter(param);
}
}
TypeStrToEnum();
SubtypeStrToEnum();
}
void DwMediaType::Assemble()
{
if (!mIsModified) return;
mString = "";
if (mTypeStr.length() == 0 || mSubtypeStr.length() == 0)
return;
mString += mTypeStr;
mString += '/';
mString += mSubtypeStr;
DwParameter* param = FirstParameter();
while (param) {
param->Assemble();
if (IsFolding()) {
mString += ";" DW_EOL " ";
}
else {
mString += "; ";
}
mString += param->AsString();
param = param->Next();
}
mIsModified = 0;
}
DwMessageComponent* DwMediaType::Clone() const
{
return new DwMediaType(*this);
}
void DwMediaType::TypeEnumToStr()
{
DwTypeEnumToStr(mType, mTypeStr);
}
void DwMediaType::TypeStrToEnum()
{
mType = DwTypeStrToEnum(mTypeStr);
}
void DwMediaType::SubtypeEnumToStr()
{
DwSubtypeEnumToStr(mSubtype, mSubtypeStr);
}
void DwMediaType::SubtypeStrToEnum()
{
mSubtype = DwSubtypeStrToEnum(mSubtypeStr);
}
void DwMediaType::DeleteParameterList()
{
DwParameter* param = mFirstParameter;
while (param) {
DwParameter* nextParam = param->Next();
delete param;
param = nextParam;
}
mFirstParameter = 0;
SetModified();
}
void DwMediaType::CopyParameterList(DwParameter* aFirst)
{
DwParameter* param = aFirst;
while (param) {
DwParameter* newParam = (DwParameter*) param->Clone();
AddParameter(newParam);
param = param->Next();
}
}
#if defined(DW_DEBUG_VERSION)
void DwMediaType::PrintDebugInfo(std::ostream& aStrm, int aDepth) const
{
aStrm <<
"--------------- Debug info for DwMediaType class ---------------\n";
_PrintDebugInfo(aStrm);
int depth = aDepth - 1;
depth = (depth >= 0) ? depth : 0;
if (aDepth == 0 || depth > 0) {
DwParameter* param = mFirstParameter;
while (param) {
param->PrintDebugInfo(aStrm, depth);
param = param->Next();
}
}
}
#else
void DwMediaType::PrintDebugInfo(std::ostream& , int ) const {}
#endif // defined(DW_DEBUG_VERSION)
#if defined(DW_DEBUG_VERSION)
void DwMediaType::_PrintDebugInfo(std::ostream& aStrm) const
{
DwFieldBody::_PrintDebugInfo(aStrm);
aStrm << "Type: " << mTypeStr << " (" << mType << ")\n";
aStrm << "Subtype: " << mSubtypeStr << " (" << mSubtype << ")\n";
aStrm << "Boundary: " << mBoundaryStr << '\n';
aStrm << "Parameters: ";
DwParameter* param = mFirstParameter;
if (param) {
int count = 0;
while (param) {
if (count) aStrm << ' ';
aStrm << param->ObjectId();
param = param->Next();
++count;
}
aStrm << '\n';
}
else {
aStrm << "(none)\n";
}
}
#else
void DwMediaType::_PrintDebugInfo(std::ostream& ) const {}
#endif // defined(DW_DEBUG_VERSION)
void DwMediaType::CheckInvariants() const
{
#if defined(DW_DEBUG_VERSION)
mTypeStr.CheckInvariants();
mSubtypeStr.CheckInvariants();
mBoundaryStr.CheckInvariants();
DwParameter* param = mFirstParameter;
while (param) {
param->CheckInvariants();
assert((DwMessageComponent*) this == param->Parent());
param = param->Next();
}
#endif // defined(DW_DEBUG_VERSION)
}
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