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#include "UnityPrefix.h"
#include "YAMLRead.h"
#include "../FileCache.h"
int YAMLRead::GetDataVersion ()
{
if (m_Versions.back() == -1)
{
yaml_node_t *node = m_CurrentNode;
int i = m_MetaParents.size();
do
{
yaml_node_t *versionNode = GetValueForKey(node, "serializedVersion");
if (versionNode)
{
Assert (versionNode->type == YAML_SCALAR_NODE);
sscanf ((char*)versionNode->data.scalar.value, "%d", &m_Versions.back());
return m_Versions.back();
}
// If "serializedVersion" is not found, look for "importerVersion" for backwards compatibility.
versionNode = GetValueForKey(node, "importerVersion");
if (versionNode)
{
Assert (versionNode->type == YAML_SCALAR_NODE);
sscanf ((char*)versionNode->data.scalar.value, "%d", &m_Versions.back());
return m_Versions.back();
}
if (i>0)
node = m_MetaParents[--i];
else
node = NULL;
}
while (node != NULL);
m_Versions.back() = 1;
}
return m_Versions.back();
}
yaml_node_t *YAMLRead::GetValueForKey (yaml_node_t* parentNode, const char* keystr)
{
if (parentNode && parentNode->type == YAML_MAPPING_NODE)
{
// The code below does not handle empty yaml arrays.
if (parentNode->data.mapping.pairs.top == parentNode->data.mapping.pairs.start)
return NULL;
yaml_node_pair_t* start;
if (m_CachedIndex < parentNode->data.mapping.pairs.top
&& m_CachedIndex >= parentNode->data.mapping.pairs.start)
start = m_CachedIndex;
else
start = parentNode->data.mapping.pairs.start;
yaml_node_pair_t* top = parentNode->data.mapping.pairs.top;
yaml_node_pair_t* i = start;
do
{
yaml_node_pair_t* next = i+1;
if (next == top)
next = parentNode->data.mapping.pairs.start;
yaml_node_t* key = yaml_document_get_node(m_ActiveDocument, i->key);
if (key == NULL)
{
// I've seen a crash bug report with no repro, indicating that this is happening.
// If you ever get this error and can repro it, let me know! jonas.
ErrorString ("YAML Node is NULL!\n");
}
else
{
Assert (key->type == YAML_SCALAR_NODE);
if (strcmp((char*)key->data.scalar.value, keystr) == 0)
{
m_CachedIndex = next;
return yaml_document_get_node(m_ActiveDocument, i->value);
}
}
i = next;
}
while (i != start);
}
return NULL;
}
void YAMLRead::Init(int flags, yaml_read_handler_t *handler, std::string *debugFileName, int debugLineCount)
{
m_UserData = NULL;
m_CurrentVersion = 0;
m_Flags = flags;
m_CachedIndex = NULL;
m_ReadHandler = handler;
yaml_parser_t parser;
memset(&parser, 0, sizeof(parser));
memset(&m_Document, 0, sizeof(m_Document));
if (!yaml_parser_initialize(&parser))
{
ErrorString("Could not initialize yaml parser\n");
return;
}
yaml_parser_set_input(&parser, handler, this );
yaml_parser_load(&parser, &m_Document);
if (parser.error != YAML_NO_ERROR)
{
if (debugFileName != NULL)
{
ErrorStringMsg("Unable to parse file %s: [%s] at line %d\n", debugFileName->c_str(), parser.problem, debugLineCount + (int)parser.problem_mark.line);
}
else
{
ErrorStringMsg("Unable to parse YAML file: [%s] at line %d\n", parser.problem, debugLineCount + (int)parser.problem_mark.line);
}
}
yaml_parser_delete(&parser);
m_Versions.push_back(-1);
m_CurrentNode = yaml_document_get_root_node(&m_Document);
m_ActiveDocument = &m_Document;
m_DidReadLastProperty = false;
}
YAMLRead::YAMLRead (yaml_document_t* yamlDocument, int flags)
: m_ReadHandler (NULL)
, m_ActiveDocument (yamlDocument)
, m_CurrentVersion (0)
, m_CachedIndex (0)
, m_DidReadLastProperty (false)
{
m_Flags = flags;
memset(&m_Document, 0, sizeof(m_Document));
m_Versions.push_back(-1);
m_CurrentNode = yaml_document_get_root_node(m_ActiveDocument);
}
int YAMLRead::YAMLReadCacheHandler(void *data, unsigned char *buffer, size_t size, size_t *size_read)
{
YAMLRead *read = (YAMLRead*)data;
if (read->m_ReadOffset + size > read->m_EndOffset)
size = read->m_EndOffset - read->m_ReadOffset;
ReadFileCache (*(CacheReaderBase*)read->m_ReadData, buffer, read->m_ReadOffset, size);
read->m_ReadOffset += size;
*size_read = size;
return true;
}
int YAMLRead::YAMLReadStringHandler(void *data, unsigned char *buffer, size_t size, size_t *size_read)
{
YAMLRead *read = (YAMLRead*)data;
if (read->m_ReadOffset + size > read->m_EndOffset)
size = read->m_EndOffset - read->m_ReadOffset;
const char* readData = reinterpret_cast<const char*> (read->m_ReadData);
memcpy (buffer, readData + read->m_ReadOffset, size);
read->m_ReadOffset += size;
*size_read = size;
return true;
}
YAMLRead::YAMLRead (const char* strBuffer, int size, int flags, std::string *debugFileName, int debugLineCount)
{
m_ReadOffset = 0;
m_EndOffset = size;
m_ReadData = const_cast<char*> (strBuffer);
Init (flags, YAMLReadStringHandler, debugFileName, debugLineCount);
}
YAMLRead::YAMLRead (const CacheReaderBase *input, size_t readOffset, size_t endOffset, int flags, std::string *debugFileName, int debugLineCount)
{
m_ReadOffset = readOffset;
m_EndOffset = endOffset;
m_ReadData = (void*)input;
Init (flags, YAMLReadCacheHandler, debugFileName, debugLineCount);
}
YAMLRead::~YAMLRead()
{
yaml_document_delete(&m_Document);
}
YAMLNode* YAMLRead::GetCurrentNode ()
{
return YAMLDocNodeToNode(m_ActiveDocument, m_CurrentNode);
}
YAMLNode* YAMLRead::GetValueNodeForKey (const char* key)
{
return YAMLDocNodeToNode (m_ActiveDocument, GetValueForKey (m_CurrentNode, key));
}
int YAMLRead::StringOutputHandler(void *data, unsigned char *buffer, size_t size)
{
string* theString = reinterpret_cast<string*> (data);
theString->append( (char *) buffer, size);
return 1;
}
void YAMLRead::BeginMetaGroup (std::string name)
{
m_MetaParents.push_back(m_CurrentNode);
m_CurrentNode = GetValueForKey(m_CurrentNode, name.c_str());
}
void YAMLRead::EndMetaGroup ()
{
m_CurrentNode = m_MetaParents.back();
m_MetaParents.pop_back();
}
void YAMLRead::TransferTypelessData (unsigned size, void* data, int metaFlag)
{
UnityStr dataString;
Transfer(dataString, "_typelessdata", metaFlag);
dataString.resize (size * 2);
HexStringToBytes (&dataString[0], size, data);
}
bool YAMLRead::HasNode (const char* name)
{
return GetValueForKey(m_CurrentNode, name) != NULL;
}
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