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added more/better error checking/handling

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@556 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Matthew Wilber 2002-08-02 16:52:27 +00:00
parent 352abde210
commit ec80db22cf
1 changed files with 80 additions and 34 deletions
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114
src/kits/translation/R4xTranslator.cpp
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@ -59,17 +59,18 @@
BR4xTranslator::BR4xTranslator(const translator_data *kpData) : BTranslator()
{
fpData = new translator_data;
if (fpData) {
fpData->translatorName = kpData->translatorName;
fpData->translatorInfo = kpData->translatorInfo;
fpData->translatorVersion = kpData->translatorVersion;
fpData->inputFormats = kpData->inputFormats;
fpData->outputFormats = kpData->outputFormats;
fpData->translatorName = kpData->translatorName;
fpData->translatorInfo = kpData->translatorInfo;
fpData->translatorVersion = kpData->translatorVersion;
fpData->inputFormats = kpData->inputFormats;
fpData->outputFormats = kpData->outputFormats;
fpData->Identify = kpData->Identify;
fpData->Translate = kpData->Translate;
fpData->MakeConfig = kpData->MakeConfig;
fpData->GetConfigMessage = kpData->GetConfigMessage;
fpData->Identify = kpData->Identify;
fpData->Translate = kpData->Translate;
fpData->MakeConfig = kpData->MakeConfig;
fpData->GetConfigMessage = kpData->GetConfigMessage;
}
}
// ---------------------------------------------------------------
@ -89,7 +90,10 @@ BR4xTranslator::BR4xTranslator(const translator_data *kpData) : BTranslator()
// ---------------------------------------------------------------
BR4xTranslator::~BR4xTranslator()
{
delete fpData;
if (fpData) {
delete fpData;
fpData = NULL;
}
}
// ---------------------------------------------------------------
@ -103,11 +107,15 @@ BR4xTranslator::~BR4xTranslator()
//
// Postconditions:
//
// Returns:
// Returns: NULL if fpData was not allocated successfully,
// or the short name of the translator otherwise
// ---------------------------------------------------------------
const char *BR4xTranslator::TranslatorName() const
{
return fpData->translatorName;
if (fpData)
return fpData->translatorName;
else
return NULL;
}
// ---------------------------------------------------------------
@ -122,11 +130,15 @@ const char *BR4xTranslator::TranslatorName() const
//
// Postconditions:
//
// Returns:
// Returns: NULL if fpData was not allocated successfully,
// or the verbose name of the translator otherwise
// ---------------------------------------------------------------
const char *BR4xTranslator::TranslatorInfo() const
{
return fpData->translatorInfo;
if (fpData)
return fpData->translatorInfo;
else
return NULL;
}
// ---------------------------------------------------------------
@ -140,11 +152,16 @@ const char *BR4xTranslator::TranslatorInfo() const
//
// Postconditions:
//
// Returns:
// Returns: B_ERROR if fpData was not allocated successfully,
// or the integer representation of the translator
// version otherwise
// ---------------------------------------------------------------
int32 BR4xTranslator::TranslatorVersion() const
{
return fpData->translatorVersion;
if (fpData)
return fpData->translatorVersion;
else
return B_ERROR;
}
// ---------------------------------------------------------------
@ -160,15 +177,24 @@ int32 BR4xTranslator::TranslatorVersion() const
//
// Postconditions:
//
// Returns: the list of supported input formats
// Returns: NULL if out_count is NULL,
// NULL if fpData is not allocated,
// or the list of supported input formats if all is well
// ---------------------------------------------------------------
const translation_format *BR4xTranslator::InputFormats(int32 *out_count) const
{
int32 i;
for (i = 0; fpData->inputFormats[i].type; i++);
if (!out_count)
return NULL;
if (fpData) {
int32 i;
for (i = 0; fpData->inputFormats[i].type; i++);
*out_count = i;
return fpData->inputFormats;
*out_count = i;
return fpData->inputFormats;
} else {
*out_count = 0;
return NULL;
}
}
// ---------------------------------------------------------------
@ -183,15 +209,24 @@ const translation_format *BR4xTranslator::InputFormats(int32 *out_count) const
//
// Postconditions:
//
// Returns: the list of supported output formats
// Returns: NULL if out_count is NULL,
// NULL if fpData is not allocated,
// or the list of supported output formats if all is well
// ---------------------------------------------------------------
const translation_format *BR4xTranslator::OutputFormats(int32 *out_count) const
{
int32 i;
for (i = 0; fpData->outputFormats[i].type; i++);
if (!out_count)
return NULL;
if (fpData) {
int32 i;
for (i = 0; fpData->outputFormats[i].type; i++);
*out_count = i;
return fpData->outputFormats;
*out_count = i;
return fpData->outputFormats;
} else {
*out_count = 0;
return NULL;
}
}
// ---------------------------------------------------------------
@ -223,13 +258,19 @@ const translation_format *BR4xTranslator::OutputFormats(int32 *out_count) const
// Postconditions:
//
// Returns: B_OK if this translator can handle the data,
// B_ERROR, if fpData is unallocated or something else
// went wrong
// B_NO_TRANSLATOR if it can't
// ---------------------------------------------------------------
status_t BR4xTranslator::Identify(BPositionIO *inSource,
const translation_format *inFormat, BMessage *ioExtension,
translator_info *outInfo, uint32 outType)
{
return fpData->Identify(inSource, inFormat, ioExtension, outInfo, outType);
if (fpData && fpData->Identify)
return fpData->Identify(inSource, inFormat, ioExtension, outInfo,
outType);
else
return B_ERROR;
}
// ---------------------------------------------------------------
@ -255,14 +296,19 @@ status_t BR4xTranslator::Identify(BPositionIO *inSource,
//
// Returns: B_OK, if it converted the data
// B_NO_TRANSLATOR, if it couldn't
// B_ERROR, if fpData is unallocated or something else
// went wrong
// some other value, if it feels like it
// ---------------------------------------------------------------
status_t BR4xTranslator::Translate(BPositionIO *inSource,
const translator_info *inInfo, BMessage *ioExtension, uint32 outType,
BPositionIO *outDestination)
{
return fpData->Translate(inSource, inInfo, ioExtension, outType,
outDestination);
if (fpData && fpData->Translate)
return fpData->Translate(inSource, inInfo, ioExtension, outType,
outDestination);
else
return B_ERROR;
}
// ---------------------------------------------------------------
@ -281,14 +327,14 @@ status_t BR4xTranslator::Translate(BPositionIO *inSource,
//
// Postconditions:
//
// Returns: B_NO_TRANSLATOR, if this function is not support
// Returns: B_ERROR, if this function is not supported
// anything else, whatever the translator feels like
// returning
// ---------------------------------------------------------------
status_t BR4xTranslator::MakeConfigurationView(BMessage *ioExtension,
BView **outView, BRect *outExtent)
{
if (fpData->MakeConfig)
if (fpData && fpData->MakeConfig)
return fpData->MakeConfig(ioExtension, outView, outExtent);
else
return B_ERROR;
@ -307,12 +353,12 @@ status_t BR4xTranslator::MakeConfigurationView(BMessage *ioExtension,
//
// Postconditions:
//
// Returns: B_NO_TRANSLATOR, if function is not support
// Returns: B_ERROR, if function is not supported
// something else, if it is
// ---------------------------------------------------------------
status_t BR4xTranslator::GetConfigurationMessage(BMessage *ioExtension)
{
if (fpData->GetConfigMessage)
if (fpData && fpData->GetConfigMessage)
return fpData->GetConfigMessage(ioExtension);
else
return B_ERROR;