bool MCReferencedImageRep::GetDataStream(IO_handle &r_stream)
{
IO_handle t_stream = nil;
if (MCSecureModeCanAccessDisk())
t_stream = MCS_open(m_file_name, kMCOpenFileModeRead, false, false, 0);
if (t_stream == nil)
{
// MW-2013-09-25: [[ Bug 10983 ]] Only ever try to load the rep as a url once.
if (!m_url_load_attempted)
{
// MW-2013-09-25: [[ Bug 10983 ]] Mark the rep has having attempted url load.
m_url_load_attempted = true;
MCExecContext ctxt(MCdefaultstackptr, nil, nil);
MCAutoValueRef t_data;
MCU_geturl(ctxt, m_file_name, &t_data);
if (ctxt.HasError() || MCValueIsEmpty(*t_data))
return false;
MCAutoDataRef t_dataref;
/* UNCHECKED */ ctxt . ConvertToData(*t_data, &t_dataref);
/* UNCHECKED */ MCMemoryAllocateCopy(MCDataGetBytePtr(*t_dataref), MCDataGetLength(*t_dataref), m_url_data);
m_url_data_size = MCDataGetLength(*t_dataref);
}
// IM-2014-09-30: [[ Bug 13501 ]] If we already have the url data then make sure we use it.
if (m_url_data != nil)
t_stream = MCS_fakeopen((const char *)m_url_data, m_url_data_size);
}
if (t_stream != nil)
r_stream = t_stream;
return t_stream != nil;
}
void MCArraysEvalArrayDecode(MCExecContext& ctxt, MCDataRef p_encoding, MCArrayRef& r_array)
{
bool t_success;
t_success = true;
IO_handle t_stream_handle;
t_stream_handle = nil;
if (t_success)
{
t_stream_handle = MCS_fakeopen(MCDataGetBytePtr(p_encoding), MCDataGetLength(p_encoding));
if (t_stream_handle == nil)
t_success = false;
}
uint8_t t_type;
if (t_success)
if (IO_read_uint1(&t_type, t_stream_handle) != IO_NORMAL)
t_success = false;
// AL-2014-05-01: [[ Bug 11989 ]] If the type is 'empty' then just return the empty array.
if (t_success && t_type == kMCEncodedValueTypeEmpty)
{
r_array = MCValueRetain(kMCEmptyArray);
return;
}
// AL-2014-05-15: [[ Bug 12203 ]] Check initial byte for version 7.0 encoded array.
bool t_legacy;
t_legacy = t_type < kMCEncodedValueTypeArray;
MCArrayRef t_array;
t_array = nil;
if (t_success)
t_success = MCArrayCreateMutable(t_array);
if (t_legacy)
{
if (t_success)
if (MCS_putback(t_type, t_stream_handle) != IO_NORMAL)
t_success = false;
MCObjectInputStream *t_stream;
t_stream = nil;
if (t_success)
{
t_stream = new MCObjectInputStream(t_stream_handle, MCDataGetLength(p_encoding), false);
if (t_stream == nil)
t_success = false;
}
if (t_success)
if (t_stream -> ReadU8(t_type) != IO_NORMAL)
t_success = false;
if (t_success)
if (MCArrayLoadFromStreamLegacy(t_array, *t_stream) != IO_NORMAL)
t_success = false;
delete t_stream;
}
else
{
if (t_success)
if (IO_read_valueref_new((MCValueRef &)t_array, t_stream_handle) != IO_NORMAL)
t_success = false;
}
MCS_close(t_stream_handle);
if (t_success)
{
r_array = t_array;
return;
}
MCValueRelease(t_array);
ctxt . Throw();
}
void MCKeywordsExecRepeatFor(MCExecContext& ctxt, MCStatement *statements, MCExpression *endcond, MCVarref *loopvar, File_unit each, uint2 line, uint2 pos)
{
MCAutoArrayRef t_array;
MCAutoStringRef t_string;
MCAutoDataRef t_data;
MCRange t_chunk_range;
t_chunk_range = MCRangeMake(0,0);
uindex_t t_length = 0;
MCAutoValueRef t_condition;
MCNameRef t_key;
MCValueRef t_value;
uintptr_t t_iterator;
// SN2015-06-15: [[ Bug 15457 ]] The index can be a negative index.
index_t t_sequenced_iterator;
const byte_t *t_data_ptr;
MCAutoPointer<MCTextChunkIterator> tci;
if (!ctxt . TryToEvaluateExpression(endcond, line, pos, EE_REPEAT_BADFORCOND, &t_condition))
return;
bool t_sequence_array;
t_sequence_array = false;
if (each == FU_ELEMENT || each == FU_KEY)
{
if (!ctxt . ConvertToArray(*t_condition, &t_array))
return;
// SN-2015-06-15: [[ Bug 15457 ]] If this is a numerical array, do
// it in order - even if it does not start at 1
if (each == FU_ELEMENT && MCArrayIsNumericSequence(*t_array, t_sequenced_iterator))
{
t_sequence_array = true;
if (!MCArrayFetchValueAtIndex(*t_array, t_sequenced_iterator, t_value))
return;
}
else
{
t_iterator = 0;
if (!MCArrayIterate(*t_array, t_iterator, t_key, t_value))
return;
}
}
else if (each == FU_BYTE)
{
if (!ctxt . ConvertToData(*t_condition, &t_data))
return;
t_length = MCDataGetLength(*t_data);
t_data_ptr = MCDataGetBytePtr(*t_data);
}
else
{
if (!ctxt . ConvertToString(*t_condition, &t_string))
return;
switch (each)
{
case FU_LINE:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_LINE);
break;
case FU_PARAGRAPH:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_PARAGRAPH);
break;
case FU_SENTENCE:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_SENTENCE);
break;
case FU_ITEM:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_ITEM);
break;
case FU_WORD:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_WORD);
break;
case FU_TRUEWORD:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_TRUEWORD);
break;
case FU_TOKEN:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_TOKEN);
break;
case FU_CODEPOINT:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_CODEPOINT);
break;
case FU_CODEUNIT:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_CODEUNIT);
break;
case FU_CHARACTER:
default:
tci = MCStringsTextChunkIteratorCreate(ctxt, *t_string, CT_CHARACTER);
break;
}
}
bool done;
done = false;
bool endnext;
endnext = false;
bool t_found;
t_found = false;
while (!done)
{
MCAutoStringRef t_unit;
MCAutoDataRef t_byte;
switch (each)
{
case FU_KEY:
{
loopvar -> set(ctxt, t_key);
if (!MCArrayIterate(*t_array, t_iterator, t_key, t_value))
endnext = true;
}
break;
case FU_ELEMENT:
{
loopvar -> set(ctxt, t_value);
// SN-2015-06-15: [[ Bug 15457 ]] Sequenced, numeric arrays
// have their own iterator
if (t_sequence_array)
{
if (!MCArrayFetchValueAtIndex(*t_array, ++t_sequenced_iterator, t_value))
endnext = true;
}
else
{
if (!MCArrayIterate(*t_array, t_iterator, t_key, t_value))
endnext = true;
}
}
break;
case FU_BYTE:
{
// SN-2014-04-14 [[ Bug 12184 ]] If we have no data at all, we don't want to start the loop
if (t_length)
{
MCDataCreateWithBytes(t_data_ptr++, 1, &t_byte);
endnext = (--t_length) == 0;
}
else
done = true;
}
break;
default:
{
t_found = MCStringsTextChunkIteratorNext(ctxt, *tci);
endnext = tci -> IsExhausted();
if (!t_found)
{
t_unit = kMCEmptyString;
done = true;
}
else
tci -> CopyString(&t_unit);
}
break;
}
// MW-2010-12-15: [[ Bug 9218 ]] Added KEY to the type of repeat that already
// copies the value.
// MW-2011-02-08: [[ Bug ]] Make sure we don't use 't_unit' if the repeat type is 'key' or
// 'element'.
// Set the loop variable to whatever the value was in the last iteration.
if (each == FU_BYTE)
{
// SN-2014-04-14 [[ Bug 12184 ]] We don't need to set anything since we are not going in the loop
if (!done)
loopvar -> set(ctxt, *t_byte);
}
else if (each != FU_ELEMENT && each != FU_KEY)
loopvar -> set(ctxt, *t_unit);
if (!done)
MCKeywordsExecuteRepeatStatements(ctxt, statements, line, pos, done);
if (endnext)
{
// Reset the loop variable to whatever the value was in the last iteration.
if (loopvar != nil)
{
if (each == FU_BYTE)
loopvar -> set(ctxt, *t_byte);
else if (each != FU_ELEMENT && each != FU_KEY)
loopvar -> set(ctxt, *t_unit);
}
}
done = done || endnext;
}
}