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opencv/modules/core/src/persistence.cpp

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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
#include "precomp.hpp"
#include "persistence.hpp"
#include <unordered_map>
#include <iterator>
namespace cv
{
namespace fs
{
int strcasecmp(const char* s1, const char* s2)
{
const char* dummy="";
if(!s1) s1=dummy;
if(!s2) s2=dummy;
size_t len1 = strlen(s1);
size_t len2 = strlen(s2);
size_t i, len = std::min(len1, len2);
for( i = 0; i < len; i++ )
{
int d = tolower((int)s1[i]) - tolower((int)s2[i]);
if( d != 0 )
return d;
}
return len1 < len2 ? -1 : len1 > len2 ? 1 : 0;
}
char* itoa( int _val, char* buffer, int /*radix*/ )
{
const int radix = 10;
char* ptr=buffer + 23 /* enough even for 64-bit integers */;
unsigned val = abs(_val);
*ptr = '\0';
do
{
unsigned r = val / radix;
*--ptr = (char)(val - (r*radix) + '0');
val = r;
}
while( val != 0 );
if( _val < 0 )
*--ptr = '-';
return ptr;
}
char* doubleToString( char* buf, double value, bool explicitZero )
{
Cv64suf val;
unsigned ieee754_hi;
val.f = value;
ieee754_hi = (unsigned)(val.u >> 32);
if( (ieee754_hi & 0x7ff00000) != 0x7ff00000 )
{
int ivalue = cvRound(value);
if( ivalue == value )
{
if( explicitZero )
sprintf( buf, "%d.0", ivalue );
else
sprintf( buf, "%d.", ivalue );
}
else
{
static const char* fmt = "%.16e";
char* ptr = buf;
sprintf( buf, fmt, value );
if( *ptr == '+' || *ptr == '-' )
ptr++;
for( ; cv_isdigit(*ptr); ptr++ )
;
if( *ptr == ',' )
*ptr = '.';
}
}
else
{
unsigned ieee754_lo = (unsigned)val.u;
if( (ieee754_hi & 0x7fffffff) + (ieee754_lo != 0) > 0x7ff00000 )
strcpy( buf, ".Nan" );
else
strcpy( buf, (int)ieee754_hi < 0 ? "-.Inf" : ".Inf" );
}
return buf;
}
char* floatToString( char* buf, float value, bool halfprecision, bool explicitZero )
{
Cv32suf val;
unsigned ieee754;
val.f = value;
ieee754 = val.u;
if( (ieee754 & 0x7f800000) != 0x7f800000 )
{
int ivalue = cvRound(value);
if( ivalue == value )
{
if( explicitZero )
sprintf( buf, "%d.0", ivalue );
else
sprintf( buf, "%d.", ivalue );
}
else
{
char* ptr = buf;
if (halfprecision)
sprintf(buf, "%.4e", value);
else
sprintf(buf, "%.8e", value);
if( *ptr == '+' || *ptr == '-' )
ptr++;
for( ; cv_isdigit(*ptr); ptr++ )
;
if( *ptr == ',' )
*ptr = '.';
}
}
else
{
if( (ieee754 & 0x7fffffff) != 0x7f800000 )
strcpy( buf, ".Nan" );
else
strcpy( buf, (int)ieee754 < 0 ? "-.Inf" : ".Inf" );
}
return buf;
}
static const char symbols[9] = "ucwsifdh";
static char typeSymbol(int depth)
{
CV_StaticAssert(CV_64F == 6, "");
CV_Assert(depth >=0 && depth <= CV_64F);
return symbols[depth];
}
static int symbolToType(char c)
{
const char* pos = strchr( symbols, c );
if( !pos )
CV_Error( CV_StsBadArg, "Invalid data type specification" );
if (c == 'r')
return CV_SEQ_ELTYPE_PTR;
return static_cast<int>(pos - symbols);
}
char* encodeFormat(int elem_type, char* dt)
{
int cn = (elem_type == CV_SEQ_ELTYPE_PTR/*CV_USRTYPE1*/) ? 1 : CV_MAT_CN(elem_type);
char symbol = (elem_type == CV_SEQ_ELTYPE_PTR/*CV_USRTYPE1*/) ? 'r' : typeSymbol(CV_MAT_DEPTH(elem_type));
sprintf(dt, "%d%c", cn, symbol);
return dt + (cn == 1 ? 1 : 0);
}
int decodeFormat( const char* dt, int* fmt_pairs, int max_len )
{
int fmt_pair_count = 0;
int i = 0, k = 0, len = dt ? (int)strlen(dt) : 0;
if( !dt || !len )
return 0;
assert( fmt_pairs != 0 && max_len > 0 );
fmt_pairs[0] = 0;
max_len *= 2;
for( ; k < len; k++ )
{
char c = dt[k];
if( cv_isdigit(c) )
{
int count = c - '0';
if( cv_isdigit(dt[k+1]) )
{
char* endptr = 0;
count = (int)strtol( dt+k, &endptr, 10 );
k = (int)(endptr - dt) - 1;
}
if( count <= 0 )
CV_Error( CV_StsBadArg, "Invalid data type specification" );
fmt_pairs[i] = count;
}
else
{
int depth = symbolToType(c);
if( fmt_pairs[i] == 0 )
fmt_pairs[i] = 1;
fmt_pairs[i+1] = depth;
if( i > 0 && fmt_pairs[i+1] == fmt_pairs[i-1] )
fmt_pairs[i-2] += fmt_pairs[i];
else
{
i += 2;
if( i >= max_len )
CV_Error( CV_StsBadArg, "Too long data type specification" );
}
fmt_pairs[i] = 0;
}
}
fmt_pair_count = i/2;
return fmt_pair_count;
}
int calcElemSize( const char* dt, int initial_size )
{
int size = 0;
int fmt_pairs[CV_FS_MAX_FMT_PAIRS], i, fmt_pair_count;
int comp_size;
fmt_pair_count = decodeFormat( dt, fmt_pairs, CV_FS_MAX_FMT_PAIRS );
fmt_pair_count *= 2;
for( i = 0, size = initial_size; i < fmt_pair_count; i += 2 )
{
comp_size = CV_ELEM_SIZE(fmt_pairs[i+1]);
size = cvAlign( size, comp_size );
size += comp_size * fmt_pairs[i];
}
if( initial_size == 0 )
{
comp_size = CV_ELEM_SIZE(fmt_pairs[1]);
size = cvAlign( size, comp_size );
}
return size;
}
int calcStructSize( const char* dt, int initial_size )
{
int size = calcElemSize( dt, initial_size );
size_t elem_max_size = 0;
for ( const char * type = dt; *type != '\0'; type++ ) {
switch ( *type )
{
case 'u': { elem_max_size = std::max( elem_max_size, sizeof(uchar ) ); break; }
case 'c': { elem_max_size = std::max( elem_max_size, sizeof(schar ) ); break; }
case 'w': { elem_max_size = std::max( elem_max_size, sizeof(ushort) ); break; }
case 's': { elem_max_size = std::max( elem_max_size, sizeof(short ) ); break; }
case 'i': { elem_max_size = std::max( elem_max_size, sizeof(int ) ); break; }
case 'f': { elem_max_size = std::max( elem_max_size, sizeof(float ) ); break; }
case 'd': { elem_max_size = std::max( elem_max_size, sizeof(double) ); break; }
default: break;
}
}
size = cvAlign( size, static_cast<int>(elem_max_size) );
return size;
}
int decodeSimpleFormat( const char* dt )
{
int elem_type = -1;
int fmt_pairs[CV_FS_MAX_FMT_PAIRS], fmt_pair_count;
fmt_pair_count = decodeFormat( dt, fmt_pairs, CV_FS_MAX_FMT_PAIRS );
if( fmt_pair_count != 1 || fmt_pairs[0] >= CV_CN_MAX)
CV_Error( CV_StsError, "Too complex format for the matrix" );
elem_type = CV_MAKETYPE( fmt_pairs[1], fmt_pairs[0] );
return elem_type;
}
}
#if defined __i386__ || defined(_M_IX86) || defined __x86_64__ || defined(_M_X64)
#define CV_UNALIGNED_LITTLE_ENDIAN_MEM_ACCESS 1
#else
#define CV_UNALIGNED_LITTLE_ENDIAN_MEM_ACCESS 0
#endif
static inline int readInt(const uchar* p)
{
#if CV_UNALIGNED_LITTLE_ENDIAN_MEM_ACCESS
return *(const int*)p;
#else
int val = (int)(p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24));
return val;
#endif
}
static inline double readReal(const uchar* p)
{
#if CV_UNALIGNED_LITTLE_ENDIAN_MEM_ACCESS
return *(const double*)p;
#else
unsigned val0 = (unsigned)(p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24));
unsigned val1 = (unsigned)(p[4] | (p[5] << 8) | (p[6] << 16) | (p[7] << 24));
Cv64suf val;
val.u = val0 | ((uint64)val1 << 32);
return val.f;
#endif
}
static inline void writeInt(uchar* p, int ival)
{
#if CV_UNALIGNED_LITTLE_ENDIAN_MEM_ACCESS
int* ip = (int*)p;
*ip = ival;
#else
p[0] = (uchar)ival;
p[1] = (uchar)(ival >> 8);
p[2] = (uchar)(ival >> 16);
p[3] = (uchar)(ival >> 24);
#endif
}
static inline void writeReal(uchar* p, double fval)
{
#if CV_UNALIGNED_LITTLE_ENDIAN_MEM_ACCESS
double* fp = (double*)p;
*fp = fval;
#else
Cv64suf v;
v.f = fval;
p[0] = (uchar)v.u;
p[1] = (uchar)(v.u >> 8);
p[2] = (uchar)(v.u >> 16);
p[3] = (uchar)(v.u >> 24);
p[4] = (uchar)(v.u >> 32);
p[5] = (uchar)(v.u >> 40);
p[6] = (uchar)(v.u >> 48);
p[7] = (uchar)(v.u >> 56);
#endif
}
class FileStorage::Impl : public FileStorage_API
{
public:
void init()
{
flags = 0;
buffer.clear();
bufofs = 0;
state = UNDEFINED;
is_opened = false;
dummy_eof = false;
write_mode = false;
mem_mode = false;
space = 0;
wrap_margin = 71;
fmt = 0;
file = 0;
gzfile = 0;
empty_stream = true;
strbufv.clear();
strbuf = 0;
strbufsize = strbufpos = 0;
roots.clear();
fs_data.clear();
fs_data_ptrs.clear();
fs_data_blksz.clear();
freeSpaceOfs = 0;
str_hash.clear();
str_hash_data.clear();
str_hash_data.resize(1);
str_hash_data[0] = '\0';
filename.clear();
lineno = 0;
}
Impl(FileStorage* _fs)
{
fs_ext = _fs;
init();
}
virtual ~Impl()
{
release();
}
void release(String* out=0)
{
if( is_opened )
{
if(out)
out->clear();
if( write_mode )
{
while( write_stack.size() > 1 )
{
endWriteStruct();
}
flush();
if( fmt == FileStorage::FORMAT_XML )
puts( "</opencv_storage>\n" );
else if ( fmt == FileStorage::FORMAT_JSON )
puts( "}\n" );
}
closeFile();
if( mem_mode && out )
{
*out = cv::String(outbuf.begin(), outbuf.end());
}
init();
}
}
void analyze_file_name( const std::string& file_name, std::vector<std::string>& params )
{
params.clear();
static const char not_file_name = '\n';
static const char parameter_begin = '?';
static const char parameter_separator = '&';
if( file_name.find(not_file_name, (size_t)0) != std::string::npos )
return;
size_t beg = file_name.find_last_of(parameter_begin);
params.push_back(file_name.substr((size_t)0, beg));
if( beg != std::string::npos )
{
size_t end = file_name.size();
beg++;
for( size_t param_beg = beg, param_end = beg;
param_end < end;
param_beg = param_end + 1 )
{
param_end = file_name.find_first_of( parameter_separator, param_beg );
if( (param_end == std::string::npos || param_end != param_beg) && param_beg + 1 < end )
{
params.push_back( file_name.substr( param_beg, param_end - param_beg ) );
}
}
}
}
bool open( const char* filename_or_buf, int _flags, const char* encoding )
{
_flags &= ~FileStorage::BASE64;
bool ok = true;
release();
bool append = (_flags & 3) == FileStorage::APPEND;
mem_mode = (_flags & FileStorage::MEMORY) != 0;
write_mode = (_flags & 3) != 0;
bool isGZ = false;
size_t fnamelen = 0;
std::vector<std::string> params;
//if ( !mem_mode )
{
analyze_file_name( filename_or_buf, params );
if( !params.empty() )
filename = params[0];
/*if( !write_base64 && params.size() >= 2 &&
std::find(params.begin()+1, params.end(), std::string("base64")) != params.end())
write_base64 = (write_mode || append);*/
}
if( filename.size() == 0 && !mem_mode && !write_mode )
CV_Error( CV_StsNullPtr, "NULL or empty filename" );
if( mem_mode && append )
CV_Error( CV_StsBadFlag, "FileStorage::APPEND and FileStorage::MEMORY are not currently compatible" );
flags = _flags;
if( !mem_mode )
{
char* dot_pos = strrchr((char*)filename.c_str(), '.');
char compression = '\0';
if( dot_pos && dot_pos[1] == 'g' && dot_pos[2] == 'z' &&
(dot_pos[3] == '\0' || (cv_isdigit(dot_pos[3]) && dot_pos[4] == '\0')) )
{
if( append )
{
CV_Error(CV_StsNotImplemented, "Appending data to compressed file is not implemented" );
}
isGZ = true;
compression = dot_pos[3];
if( compression )
dot_pos[3] = '\0', fnamelen--;
}
if( !isGZ )
{
file = fopen(filename.c_str(), !write_mode ? "rt" : !append ? "wt" : "a+t" );
if( !file )
return false;
}
else
{
#if USE_ZLIB
char mode[] = { write_mode ? 'w' : 'r', 'b', compression ? compression : '3', '\0' };
gzfile = gzopen(filename.c_str(), mode);
if( !gzfile )
return false;
#else
CV_Error(CV_StsNotImplemented, "There is no compressed file storage support in this configuration");
#endif
}
}
roots.clear();
fs_data.clear();
wrap_margin = 71;
fmt = FileStorage::FORMAT_AUTO;
if( write_mode )
{
fmt = flags & FileStorage::FORMAT_MASK;
if( mem_mode )
outbuf.clear();
if( fmt == FileStorage::FORMAT_AUTO && !filename.empty() )
{
const char* dot_pos = NULL;
const char* dot_pos2 = NULL;
// like strrchr() implementation, but save two last positions simultaneously
for (const char* pos = &filename[0]; pos[0] != 0; pos++)
{
if( pos[0] == '.' )
{
dot_pos2 = dot_pos;
dot_pos = pos;
}
}
if (fs::strcasecmp(dot_pos, ".gz") == 0 && dot_pos2 != NULL)
{
dot_pos = dot_pos2;
}
fmt = (fs::strcasecmp(dot_pos, ".xml") == 0 || fs::strcasecmp(dot_pos, ".xml.gz") == 0 )
? FileStorage::FORMAT_XML
: (fs::strcasecmp(dot_pos, ".json") == 0 || fs::strcasecmp(dot_pos, ".json.gz") == 0)
? FileStorage::FORMAT_JSON
: FileStorage::FORMAT_YAML;
}
else if( fmt == FileStorage::FORMAT_AUTO )
{
fmt = FileStorage::FORMAT_XML;
}
// we use factor=6 for XML (the longest characters (' and ") are encoded with 6 bytes (&apos; and &quot;)
// and factor=4 for YAML ( as we use 4 bytes for non ASCII characters (e.g. \xAB))
int buf_size = CV_FS_MAX_LEN*(fmt == FileStorage::FORMAT_XML ? 6 : 4) + 1024;
if (append)
{
fseek( file, 0, SEEK_END );
if (ftell(file) == 0)
append = false;
}
write_stack.clear();
empty_stream = true;
write_stack.push_back(FStructData("", FileNode::MAP | FileNode::EMPTY, 0));
buffer.reserve(buf_size + 1024);
buffer.resize(buf_size);
bufofs = 0;
if( fmt == FileStorage::FORMAT_XML )
{
size_t file_size = file ? (size_t)ftell(file) : (size_t)0;
if( !append || file_size == 0 )
{
if( encoding && *encoding != '\0' )
{
if( fs::strcasecmp(encoding, "UTF-16" ) == 0 )
{
release();
CV_Error( CV_StsBadArg, "UTF-16 XML encoding is not supported! Use 8-bit encoding\n");
}
CV_Assert( strlen(encoding) < 1000 );
char buf[1100];
sprintf(buf, "<?xml version=\"1.0\" encoding=\"%s\"?>\n", encoding);
puts( buf );
}
else
puts( "<?xml version=\"1.0\"?>\n" );
puts( "<opencv_storage>\n" );
}
else
{
int xml_buf_size = 1 << 10;
char substr[] = "</opencv_storage>";
int last_occurence = -1;
xml_buf_size = MIN(xml_buf_size, int(file_size));
fseek( file, -xml_buf_size, SEEK_END );
std::vector<char> xml_buf_(xml_buf_size+2);
// find the last occurrence of </opencv_storage>
for(;;)
{
int line_offset = (int)ftell( file );
const char* ptr0 = this->gets(&xml_buf_[0], xml_buf_size );
const char* ptr = NULL;
if( !ptr0 )
break;
ptr = ptr0;
for(;;)
{
ptr = strstr( ptr, substr );
if( !ptr )
break;
last_occurence = line_offset + (int)(ptr - ptr0);
ptr += strlen(substr);
}
}
if( last_occurence < 0 )
{
release();
CV_Error( CV_StsError, "Could not find </opencv_storage> in the end of file.\n" );
}
closeFile();
file = fopen( filename.c_str(), "r+t" );
CV_Assert(file != 0);
fseek( file, last_occurence, SEEK_SET );
// replace the last "</opencv_storage>" with " <!-- resumed -->", which has the same length
puts( " <!-- resumed -->" );
fseek( file, 0, SEEK_END );
puts( "\n" );
}
emitter = createXMLEmitter(this);
}
else if( fmt == FileStorage::FORMAT_YAML )
{
if( !append)
puts( "%YAML:1.0\n---\n" );
else
puts( "...\n---\n" );
emitter = createYAMLEmitter(this);
}
else
{
CV_Assert( fmt == FileStorage::FORMAT_JSON );
if( !append )
puts( "{\n" );
else
{
bool valid = false;
long roffset = 0;
for ( ;
fseek( file, roffset, SEEK_END ) == 0;
roffset -= 1 )
{
const char end_mark = '}';
if ( fgetc( file ) == end_mark )
{
fseek( file, roffset, SEEK_END );
valid = true;
break;
}
}
if ( valid )
{
closeFile();
file = fopen( filename.c_str(), "r+t" );
CV_Assert(file != 0);
fseek( file, roffset, SEEK_END );
fputs( ",", file );
}
else
{
CV_Error( CV_StsError, "Could not find '}' in the end of file.\n" );
}
}
write_stack.back().indent = 4;
emitter = createJSONEmitter(this);
}
is_opened = true;
}
else
{
const size_t buf_size0 = 1 << 20;
size_t buf_size = buf_size0;
if( mem_mode )
{
strbuf = (char*)filename_or_buf;
strbufsize = strlen(strbuf);
}
const char* yaml_signature = "%YAML";
const char* json_signature = "{";
const char* xml_signature = "<?xml";
char buf[16];
this->gets( buf, sizeof(buf)-2 );
char* bufPtr = cv_skip_BOM(buf);
size_t bufOffset = bufPtr - buf;
if(strncmp( bufPtr, yaml_signature, strlen(yaml_signature) ) == 0)
fmt = FileStorage::FORMAT_YAML;
else if(strncmp( bufPtr, json_signature, strlen(json_signature) ) == 0)
fmt = FileStorage::FORMAT_JSON;
else if(strncmp( bufPtr, xml_signature, strlen(xml_signature) ) == 0)
fmt = FileStorage::FORMAT_XML;
else if(strbufsize == bufOffset)
CV_Error(CV_BADARG_ERR, "Input file is empty");
else
CV_Error(CV_BADARG_ERR, "Unsupported file storage format");
if( !isGZ )
{
if( !mem_mode )
{
fseek( file, 0, SEEK_END );
buf_size = ftell( file );
}
else
buf_size = strbufsize;
buf_size = MIN( buf_size, buf_size0 );
buf_size = MAX( buf_size, (size_t)(CV_FS_MAX_LEN*6 + 1024) );
}
rewind();
strbufpos = bufOffset;
buffer.reserve(buf_size + 256);
buffer.resize(buf_size);
bufofs = 0;
try
{
char* ptr = bufferStart();
ptr[0] = ptr[1] = ptr[2] = '\0';
FileNode root_nodes(fs_ext, 0, 0);
uchar* rptr = reserveNodeSpace(root_nodes, 9);
*rptr = FileNode::SEQ;
writeInt(rptr + 1, 4);
writeInt(rptr + 5, 0);
roots.clear();
switch (fmt)
{
case FileStorage::FORMAT_XML: parser = createXMLParser(this); break;
case FileStorage::FORMAT_YAML: parser = createYAMLParser(this); break;
case FileStorage::FORMAT_JSON: parser = createJSONParser(this); break;
default: parser = Ptr<FileStorageParser>();
}
if( !parser.empty() )
{
ok = parser->parse(ptr);
if( ok )
{
finalizeCollection(root_nodes);
CV_Assert( !fs_data_ptrs.empty() );
FileNode roots_node(fs_ext, 0, 0);
size_t i, nroots = roots_node.size();
FileNodeIterator it = roots_node.begin();
for( i = 0; i < nroots; i++, ++it )
roots.push_back(*it);
}
}
}
catch(...)
{
is_opened = true;
release();
throw;
}
// release resources that we do not need anymore
closeFile();
is_opened = true;
std::vector<char> tmpbuf;
std::swap(buffer, tmpbuf);
bufofs = 0;
}
return ok;
}
void puts( const char* str )
{
CV_Assert( write_mode );
if( mem_mode )
std::copy(str, str + strlen(str), std::back_inserter(outbuf));
else if( file )
fputs( str, file );
#if USE_ZLIB
else if( gzfile )
gzputs( gzfile, str );
#endif
else
CV_Error( CV_StsError, "The storage is not opened" );
}
char* gets( char* str, int maxCount )
{
if( strbuf )
{
size_t i = strbufpos, len = strbufsize;
int j = 0;
const char* instr = strbuf;
while( i < len && j < maxCount-1 )
{
char c = instr[i++];
if( c == '\0' )
break;
str[j++] = c;
if( c == '\n' )
break;
}
str[j++] = '\0';
strbufpos = i;
if (maxCount > 256 && !(flags & cv::FileStorage::BASE64))
CV_Assert(j < maxCount - 1 && "OpenCV persistence doesn't support very long lines");
return j > 1 ? str : 0;
}
if( file )
{
char* ptr = fgets( str, maxCount, file );
if (ptr && maxCount > 256 && !(flags & cv::FileStorage::BASE64))
{
size_t sz = strnlen(ptr, maxCount);
CV_Assert(sz < (size_t)(maxCount - 1) && "OpenCV persistence doesn't support very long lines");
}
return ptr;
}
#if USE_ZLIB
if( gzfile )
{
char* ptr = gzgets( gzfile, str, maxCount );
if (ptr && maxCount > 256 && !(flags & cv::FileStorage::BASE64))
{
size_t sz = strnlen(ptr, maxCount);
CV_Assert(sz < (size_t)(maxCount - 1) && "OpenCV persistence doesn't support very long lines");
}
return ptr;
}
#endif
CV_Error(CV_StsError, "The storage is not opened");
}
char* gets()
{
char* ptr = this->gets(bufferStart(), (int)(bufferEnd() - bufferStart()));
if( !ptr )
{
ptr = bufferStart(); // FIXIT Why do we need this hack? What is about other parsers JSON/YAML?
*ptr = '\0';
setEof();
return 0;
}
else
{
FileStorage_API* fs = this;
int l = (int)strlen(ptr);
if( l > 0 && ptr[l-1] != '\n' && ptr[l-1] != '\r' && !eof() )
CV_PARSE_ERROR_CPP("Too long string or a last string w/o newline");
}
lineno++;
return ptr;
}
bool eof()
{
if( dummy_eof )
return true;
if( strbuf )
return strbufpos >= strbufsize;
if( file )
return feof(file) != 0;
#if USE_ZLIB
if( gzfile )
return gzeof(gzfile) != 0;
#endif
return false;
}
void setEof()
{
dummy_eof = true;
}
void closeFile()
{
if( file )
fclose( file );
#if USE_ZLIB
else if( gzfile )
gzclose( gzfile );
#endif
file = 0;
gzfile = 0;
strbuf = 0;
strbufpos = 0;
is_opened = false;
}
void rewind()
{
if( file )
::rewind(file);
#if USE_ZLIB
else if( gzfile )
gzrewind(gzfile);
#endif
strbufpos = 0;
}
char* resizeWriteBuffer( char* ptr, int len )
{
const char* buffer_end = &buffer[0] + buffer.size();
if( ptr + len < buffer_end )
return ptr;
const char* buffer_start = &buffer[0];
int written_len = (int)(ptr - buffer_start);
CV_Assert(written_len <= (int)buffer.size());
int new_size = (int)((buffer_end - buffer_start)*3/2);
new_size = MAX( written_len + len, new_size );
buffer.reserve( new_size + 256 );
buffer.resize( new_size );
bufofs = written_len;
return &buffer[0] + bufofs;
}
char* flush()
{
char* buffer_start = &buffer[0];
char* ptr = buffer_start + bufofs;
if( ptr > buffer_start + space )
{
ptr[0] = '\n';
ptr[1] = '\0';
puts( buffer_start );
bufofs = 0;
}
int indent = write_stack.back().indent;
if( space != indent )
{
memset( buffer_start, ' ', indent );
space = indent;
}
bufofs = space;
ptr = buffer_start + bufofs;
return ptr;
}
void endWriteStruct()
{
CV_Assert( write_mode );
CV_Assert( !write_stack.empty() );
FStructData& current_struct = write_stack.back();
if( fmt == FileStorage::FORMAT_JSON && !FileNode::isFlow(current_struct.flags) && write_stack.size() > 1 )
current_struct.indent = write_stack[write_stack.size() - 2].indent;
emitter->endWriteStruct(current_struct);
write_stack.pop_back();
if( !write_stack.empty() )
write_stack.back().flags &= ~FileNode::EMPTY;
}
void startWriteStruct( const char* key, int struct_flags,
const char* type_name )
{
CV_Assert( write_mode );
struct_flags = (struct_flags & (FileNode::TYPE_MASK|FileNode::FLOW)) | FileNode::EMPTY;
if( !FileNode::isCollection(struct_flags))
CV_Error( CV_StsBadArg,
"Some collection type: FileNode::SEQ or FileNode::MAP must be specified" );
if( type_name && type_name[0] == '\0' )
type_name = 0;
FStructData s = emitter->startWriteStruct( write_stack.back(), key, struct_flags, type_name );
write_stack.push_back(s);
size_t write_stack_size = write_stack.size();
if( write_stack_size > 1 )
write_stack[write_stack_size-2].flags &= ~FileNode::EMPTY;
if( !FileNode::isFlow(s.flags) )
flush();
if( fmt == FileStorage::FORMAT_JSON && type_name && type_name[0] && FileNode::isMap(struct_flags))
{
emitter->write("type_id", type_name, false);
}
}
void writeComment( const char* comment, bool eol_comment )
{
CV_Assert(write_mode);
emitter->writeComment( comment, eol_comment );
}
void startNextStream()
{
CV_Assert(write_mode);
if( !empty_stream )
{
while( !write_stack.empty() )
endWriteStruct();
flush();
emitter->startNextStream();
empty_stream = true;
write_stack.push_back(FStructData("", FileNode::EMPTY, 0));
bufofs = 0;
}
}
void write( const String& key, int value )
{
CV_Assert(write_mode);
emitter->write(key.c_str(), value);
}
void write( const String& key, double value )
{
CV_Assert(write_mode);
emitter->write(key.c_str(), value);
}
void write( const String& key, const String& value )
{
CV_Assert(write_mode);
emitter->write(key.c_str(), value.c_str(), false);
}
void writeRawData( const std::string& dt, const void* _data, size_t len )
{
CV_Assert(write_mode);
size_t elemSize = fs::calcStructSize(dt.c_str(), 0);
CV_Assert( len % elemSize == 0 );
len /= elemSize;
bool explicitZero = fmt == FileStorage::FORMAT_JSON;
const uchar* data0 = (const uchar*)_data;
int fmt_pairs[CV_FS_MAX_FMT_PAIRS*2], k, fmt_pair_count;
char buf[256] = "";
fmt_pair_count = fs::decodeFormat( dt.c_str(), fmt_pairs, CV_FS_MAX_FMT_PAIRS );
if( !len )
return;
if( !data0 )
CV_Error( CV_StsNullPtr, "Null data pointer" );
if( fmt_pair_count == 1 )
{
fmt_pairs[0] *= (int)len;
len = 1;
}
for(;len--; data0 += elemSize)
{
int offset = 0;
for( k = 0; k < fmt_pair_count; k++ )
{
int i, count = fmt_pairs[k*2];
int elem_type = fmt_pairs[k*2+1];
int elem_size = CV_ELEM_SIZE(elem_type);
const char *ptr;
offset = cvAlign( offset, elem_size );
const uchar* data = data0 + offset;
for( i = 0; i < count; i++ )
{
switch( elem_type )
{
case CV_8U:
ptr = fs::itoa( *(uchar*)data, buf, 10 );
data++;
break;
case CV_8S:
ptr = fs::itoa( *(char*)data, buf, 10 );
data++;
break;
case CV_16U:
ptr = fs::itoa( *(ushort*)data, buf, 10 );
data += sizeof(ushort);
break;
case CV_16S:
ptr = fs::itoa( *(short*)data, buf, 10 );
data += sizeof(short);
break;
case CV_32S:
ptr = fs::itoa( *(int*)data, buf, 10 );
data += sizeof(int);
break;
case CV_32F:
ptr = fs::floatToString( buf, *(float*)data, false, explicitZero );
data += sizeof(float);
break;
case CV_64F:
ptr = fs::doubleToString( buf, *(double*)data, explicitZero );
data += sizeof(double);
break;
case CV_16F: /* reference */
ptr = fs::floatToString( buf, (float)*(float16_t*)data, true, explicitZero );
data += sizeof(float16_t);
break;
default:
CV_Error( CV_StsUnsupportedFormat, "Unsupported type" );
return;
}
emitter->writeScalar(0, ptr);
}
offset = (int)(data - data0);
}
}
}
void writeRawDataBase64(const void* /*data*/, int /*len*/, const char* /*dt*/ )
{
}
String releaseAndGetString();
FileNode getFirstTopLevelNode() const
{
return roots.empty() ? FileNode() : roots[0];
}
FileNode root(int streamIdx=0) const
{
return streamIdx >= 0 && streamIdx < (int)roots.size() ? roots[streamIdx] : FileNode();
}
FileNode operator[](const String& nodename) const
{
return this->operator[](nodename.c_str());
}
FileNode operator[](const char* /*nodename*/) const
{
return FileNode();
}
int getFormat() const { return fmt; }
char* bufferPtr() const { return (char*)(&buffer[0] + bufofs); }
char* bufferStart() const { return (char*)&buffer[0]; }
char* bufferEnd() const { return (char*)(&buffer[0] + buffer.size()); }
void setBufferPtr(char* ptr)
{
char* bufferstart = bufferStart();
CV_Assert( ptr >= bufferstart && ptr <= bufferEnd() );
bufofs = ptr - bufferstart;
}
int wrapMargin() const { return wrap_margin; }
FStructData& getCurrentStruct()
{
CV_Assert(!write_stack.empty());
return write_stack.back();
}
void setNonEmpty()
{
empty_stream = false;
}
void processSpecialDouble( char* buf, double* value, char** endptr )
{
FileStorage_API* fs = this;
char c = buf[0];
int inf_hi = 0x7ff00000;
if( c == '-' || c == '+' )
{
inf_hi = c == '-' ? 0xfff00000 : 0x7ff00000;
c = *++buf;
}
if( c != '.' )
CV_PARSE_ERROR_CPP( "Bad format of floating-point constant" );
Cv64suf v;
v.f = 0.;
if( toupper(buf[1]) == 'I' && toupper(buf[2]) == 'N' && toupper(buf[3]) == 'F' )
v.u = (uint64)inf_hi << 32;
else if( toupper(buf[1]) == 'N' && toupper(buf[2]) == 'A' && toupper(buf[3]) == 'N' )
v.u = (uint64)-1;
else
CV_PARSE_ERROR_CPP( "Bad format of floating-point constant" );
*value = v.f;
*endptr = buf + 4;
}
double strtod( char* ptr, char** endptr )
{
double fval = ::strtod( ptr, endptr );
if( **endptr == '.' )
{
char* dot_pos = *endptr;
*dot_pos = ',';
double fval2 = ::strtod( ptr, endptr );
*dot_pos = '.';
if( *endptr > dot_pos )
fval = fval2;
else
*endptr = dot_pos;
}
if( *endptr == ptr || cv_isalpha(**endptr) )
processSpecialDouble( ptr, &fval, endptr );
return fval;
}
void convertToCollection(int type, FileNode& node)
{
CV_Assert( type == FileNode::SEQ || type == FileNode::MAP );
int node_type = node.type();
if( node_type == type )
return;
bool named = node.isNamed();
uchar* ptr = node.ptr() + 1 + (named ? 4 : 0);
int ival = 0;
double fval = 0;
std::string sval;
bool add_first_scalar = false;
if( node_type != FileNode::NONE )
{
// scalar nodes can only be converted to sequences, e.g. in XML:
// <a>5[parser_position]... => create 5 with name "a"
// <a>5 6[parser_position]... => 5 is converted to [5] and then 6 is added to it
//
// otherwise we don't know where to get the element names from
CV_Assert( type == FileNode::SEQ );
if( node_type == FileNode::INT )
{
ival = readInt(ptr);
add_first_scalar = true;
}
else if( node_type == FileNode::REAL )
{
fval = readReal(ptr);
add_first_scalar = true;
}
else if( node_type == FileNode::STRING )
{
sval = std::string(node);
add_first_scalar = true;
}
else
CV_Error_(Error::StsError, ("The node of type %d cannot be converted to collection", node_type));
}
ptr = reserveNodeSpace(node, 1 + (named ? 4 : 0) + 4 + 4);
*ptr++ = (uchar)(type | (named ? FileNode::NAMED : 0));
// name has been copied automatically
if( named )
ptr += 4;
// set raw_size(collection)==4, nelems(collection)==1
writeInt(ptr, 4);
writeInt(ptr + 4, 0);
if( add_first_scalar )
addNode(node, std::string(), node_type,
node_type == FileNode::INT ? (const void*)&ival :
node_type == FileNode::REAL ? (const void*)&fval :
node_type == FileNode::STRING ? (const void*)sval.c_str() : 0,
-1);
}
// a) allocates new FileNode (for that just set blockIdx to the last block and ofs to freeSpaceOfs) or
// b) reallocates just created new node (blockIdx and ofs must be taken from FileNode).
// If there is no enough space in the current block (it should be the last block added so far),
// the last block is shrunk so that it ends immediately before the reallocated node. Then,
// a new block of sufficient size is allocated and the FileNode is placed in the beginning of it.
// The case (a) can be used to allocate the very first node by setting blockIdx == ofs == 0.
// In the case (b) the existing tag and the name are copied automatically.
uchar* reserveNodeSpace(FileNode& node, size_t sz)
{
uchar *ptr = 0, *blockEnd = 0;
if( !fs_data_ptrs.empty() )
{
size_t blockIdx = node.blockIdx;
size_t ofs = node.ofs;
CV_Assert( blockIdx == fs_data_ptrs.size()-1 );
CV_Assert( ofs <= fs_data_blksz[blockIdx] );
//CV_Assert( freeSpaceOfs <= ofs + sz );
ptr = fs_data_ptrs[blockIdx] + ofs;
blockEnd = fs_data_ptrs[blockIdx] + fs_data_blksz[blockIdx];
if( ptr + sz <= blockEnd )
{
freeSpaceOfs = ofs + sz;
return ptr;
}
fs_data[blockIdx]->resize(ofs);
fs_data_blksz[blockIdx] = ofs;
}
size_t blockSize = std::max((size_t)CV_FS_MAX_LEN*4 - 256, sz) + 256;
Ptr<std::vector<uchar> > pv = makePtr<std::vector<uchar> >(blockSize);
fs_data.push_back(pv);
uchar* new_ptr = &pv->at(0);
fs_data_ptrs.push_back(new_ptr);
fs_data_blksz.push_back(blockSize);
node.blockIdx = fs_data_ptrs.size()-1;
node.ofs = 0;
freeSpaceOfs = sz;
if( ptr && ptr + 5 <= blockEnd )
{
new_ptr[0] = ptr[0];
if( ptr[0] & FileNode::NAMED )
{
new_ptr[1] = ptr[1];
new_ptr[2] = ptr[2];
new_ptr[3] = ptr[3];
new_ptr[4] = ptr[4];
}
}
return new_ptr;
}
unsigned getStringOfs( const std::string& key )
{
str_hash_t::iterator it = str_hash.find(key);
return it != str_hash.end() ? it->second : 0;
}
FileNode addNode( FileNode& collection, const std::string& key,
int elem_type, const void* value, int len )
{
FileStorage_API* fs = this;
bool noname = key.empty() || (fmt == FileStorage::FORMAT_XML && strcmp(key.c_str(), "_") == 0);
convertToCollection( noname ? FileNode::SEQ : FileNode::MAP, collection );
bool isseq = collection.empty() ? false : collection.isSeq();
if( noname != isseq )
CV_PARSE_ERROR_CPP( noname ? "Map element should have a name" :
"Sequence element should not have name (use <_></_>)" );
unsigned strofs = 0;
if( !noname )
{
strofs = getStringOfs(key);
if( !strofs )
{
strofs = (unsigned)str_hash_data.size();
size_t keysize = key.size() + 1;
str_hash_data.resize(strofs + keysize);
memcpy(&str_hash_data[0] + strofs, &key[0], keysize);
str_hash.insert(std::make_pair(key, strofs));
}
}
uchar* cp = collection.ptr();
size_t blockIdx = fs_data_ptrs.size() - 1;
size_t ofs = freeSpaceOfs;
FileNode node(fs_ext, blockIdx, ofs);
size_t sz0 = 1 + (noname ? 0 : 4) + 8;
uchar* ptr = reserveNodeSpace(node, sz0);
*ptr++ = (uchar)(elem_type | (noname ? 0 : FileNode::NAMED));
if( elem_type == FileNode::NONE )
freeSpaceOfs -= 8;
if( !noname )
{
writeInt(ptr, (int)strofs);
ptr += 4;
}
if( elem_type == FileNode::SEQ || elem_type == FileNode::MAP )
{
writeInt(ptr, 4);
writeInt(ptr, 0);
}
if( value )
node.setValue(elem_type, value, len);
if( collection.isNamed() )
cp += 4;
int nelems = readInt(cp + 5);
writeInt(cp + 5, nelems + 1);
return node;
}
void finalizeCollection( FileNode& collection )
{
if( !collection.isSeq() && !collection.isMap() )
return;
uchar* ptr0 = collection.ptr(), *ptr = ptr0 + 1;
if( *ptr0 & FileNode::NAMED )
ptr += 4;
size_t blockIdx = collection.blockIdx;
size_t ofs = collection.ofs + (size_t)(ptr + 8 - ptr0);
size_t rawSize = 4;
unsigned sz = (unsigned)readInt(ptr + 4);
if( sz > 0 )
{
size_t lastBlockIdx = fs_data_ptrs.size() - 1;
for( ; blockIdx < lastBlockIdx; blockIdx++ )
{
rawSize += fs_data_blksz[blockIdx] - ofs;
ofs = 0;
}
}
rawSize += freeSpaceOfs - ofs;
writeInt(ptr, (int)rawSize);
}
void normalizeNodeOfs(size_t& blockIdx, size_t& ofs)
{
while( ofs >= fs_data_blksz[blockIdx] )
{
if( blockIdx == fs_data_blksz.size() - 1 )
{
CV_Assert( ofs == fs_data_blksz[blockIdx] );
break;
}
ofs -= fs_data_blksz[blockIdx];
blockIdx++;
}
}
class Base64Decoder
{
public:
Base64Decoder() { ofs = 0; ptr = 0; indent = 0; totalchars = 0; eos = true; }
void init(Ptr<FileStorageParser>& _parser, char* _ptr, int _indent)
{
parser = _parser;
ptr = _ptr;
indent = _indent;
encoded.clear();
decoded.clear();
ofs = 0;
totalchars = 0;
eos = false;
}
bool readMore(int needed)
{
static const uchar base64tab[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 0, 0, 0,
0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0,
0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
if( eos )
return false;
size_t sz = decoded.size();
CV_Assert( ofs <= sz );
sz -= ofs;
for( size_t i = 0; i < sz; i++ )
decoded[i] = decoded[ofs + i];
decoded.resize(sz);
ofs = 0;
CV_Assert( !parser.empty() && ptr );
char *beg = 0, *end = 0;
bool ok = parser->getBase64Row(ptr, indent, beg, end);
ptr = end;
std::copy(beg, end, std::back_inserter(encoded));
totalchars += end - beg;
if( !ok || beg == end )
{
// in the end of base64 sequence pad it with '=' characters so that
// its total length is multiple of
eos = true;
size_t tc = totalchars;
for( ; tc % 4 != 0; tc++ )
encoded.push_back('=');
}
int i = 0, j, n = (int)encoded.size();
if( n > 0 )
{
const uchar* tab = base64tab;
char* src = &encoded[0];
for( ; i <= n - 4; i += 4 )
{
// dddddd cccccc bbbbbb aaaaaa => ddddddcc ccccbbbb bbaaaaaa
uchar d = tab[(int)(uchar)src[i]], c = tab[(int)(uchar)src[i+1]];
uchar b = tab[(int)(uchar)src[i+2]], a = tab[(int)(uchar)src[i+3]];
decoded.push_back((uchar)((d << 2) | (c >> 4)));
decoded.push_back((uchar)((c << 4) | (b >> 2)));
decoded.push_back((uchar)((b << 6) | a));
}
}
if( i > 0 && encoded[i-1] == '=' )
{
if( i > 1 && encoded[i-2] == '=' && !decoded.empty() )
decoded.pop_back();
if( !decoded.empty() )
decoded.pop_back();
}
n -= i;
for( j = 0; j < n; j++ )
encoded[j] = encoded[i + j];
encoded.resize(n);
return (int)decoded.size() >= needed;
}
uchar getUInt8()
{
size_t sz = decoded.size();
if( ofs >= sz && !readMore(1) )
return (uchar)0;
return decoded[ofs++];
}
ushort getUInt16()
{
size_t sz = decoded.size();
if( ofs + 2 > sz && !readMore(2) )
return (ushort)0;
ushort val = (decoded[ofs] + (decoded[ofs + 1] << 8));
ofs += 2;
return val;
}
int getInt32()
{
size_t sz = decoded.size();
if( ofs + 4 > sz && !readMore(4) )
return 0;
int ival = readInt(&decoded[ofs]);
ofs += 4;
return ival;
}
double getFloat64()
{
size_t sz = decoded.size();
if( ofs + 8 > sz && !readMore(8) )
return 0;
double fval = readReal(&decoded[ofs]);
ofs += 8;
return fval;
}
bool endOfStream() const { return eos; }
char* getPtr() const { return ptr; }
protected:
Ptr<FileStorageParser> parser;
char* ptr;
int indent;
std::vector<char> encoded;
std::vector<uchar> decoded;
size_t ofs;
size_t totalchars;
bool eos;
};
char* parseBase64(char* ptr, int indent, FileNode& collection)
{
const int BASE64_HDR_SIZE = 24;
char dt[BASE64_HDR_SIZE+1] = {0};
base64decoder.init(parser, ptr, indent);
int i, k;
for( i = 0; i < BASE64_HDR_SIZE; i++ )
dt[i] = (char)base64decoder.getUInt8();
for( i = 0; i < BASE64_HDR_SIZE; i++ )
if( isspace(dt[i]))
break;
dt[i] = '\0';
CV_Assert( !base64decoder.endOfStream() );
int fmt_pairs[CV_FS_MAX_FMT_PAIRS*2];
int fmt_pair_count = fs::decodeFormat( dt, fmt_pairs, CV_FS_MAX_FMT_PAIRS );
int ival = 0;
double fval = 0;
for(;;)
{
for( k = 0; k < fmt_pair_count; k++ )
{
int elem_type = fmt_pairs[k*2+1];
int count = fmt_pairs[k*2];
for( i = 0; i < count; i++ )
{
int node_type = FileNode::INT;
switch( elem_type )
{
case CV_8U:
ival = base64decoder.getUInt8();
break;
case CV_8S:
ival = (char)base64decoder.getUInt8();
break;
case CV_16U:
ival = base64decoder.getUInt16();
break;
case CV_16S:
ival = (short)base64decoder.getUInt16();
break;
case CV_32S:
ival = base64decoder.getInt32();
break;
case CV_32F:
{
Cv32suf v;
v.i = base64decoder.getInt32();
fval = v.f;
node_type = FileNode::REAL;
}
break;
case CV_64F:
fval = base64decoder.getFloat64();
node_type = FileNode::REAL;
break;
case CV_16F:
fval = (float)float16_t::fromBits(base64decoder.getUInt16());
node_type = FileNode::REAL;
break;
default:
CV_Error( Error::StsUnsupportedFormat, "Unsupported type" );
}
if( base64decoder.endOfStream() )
break;
addNode(collection, std::string(), node_type,
node_type == FileNode::INT ? (void*)&ival : (void*)&fval, -1);
}
}
if( base64decoder.endOfStream() )
break;
}
finalizeCollection(collection);
return base64decoder.getPtr();
}
void parseError( const char* func_name, const std::string& err_msg, const char* source_file, int source_line )
{
std::string msg = format("%s(%d): %s", filename.c_str(), lineno, err_msg.c_str());
error(Error::StsParseError, func_name, msg.c_str(), source_file, source_line );
}
const uchar* getNodePtr(size_t blockIdx, size_t ofs) const
{
CV_Assert( blockIdx < fs_data_ptrs.size());
CV_Assert( ofs < fs_data_blksz[blockIdx]);
return fs_data_ptrs[blockIdx] + ofs;
}
std::string getName( size_t nameofs ) const
{
CV_Assert( nameofs < str_hash_data.size() );
return std::string(&str_hash_data[nameofs]);
}
FileStorage* getFS() { return fs_ext; }
FileStorage* fs_ext;
std::string filename;
int flags;
bool empty_stream;
FILE* file;
gzFile gzfile;
bool is_opened;
bool dummy_eof;
bool write_mode;
bool mem_mode;
int fmt;
State state; //!< current state of the FileStorage (used only for writing)
int space, wrap_margin;
std::deque<FStructData> write_stack;
std::vector<char> buffer;
size_t bufofs;
std::deque<char> outbuf;
Ptr<FileStorageEmitter> emitter;
Ptr<FileStorageParser> parser;
Base64Decoder base64decoder;
std::vector<FileNode> roots;
std::vector<Ptr<std::vector<uchar> > > fs_data;
std::vector<uchar*> fs_data_ptrs;
std::vector<size_t> fs_data_blksz;
size_t freeSpaceOfs;
typedef std::unordered_map<std::string, unsigned> str_hash_t;
str_hash_t str_hash;
std::vector<char> str_hash_data;
std::vector<char> strbufv;
char* strbuf;
size_t strbufsize;
size_t strbufpos;
int lineno;
};
FileStorage::FileStorage()
: state(0)
{
p = makePtr<FileStorage::Impl>(this);
}
FileStorage::FileStorage(const String& filename, int flags, const String& encoding)
: state(0)
{
p = makePtr<FileStorage::Impl>(this);
bool ok = p->open(filename.c_str(), flags, encoding.c_str());
if(ok)
state = FileStorage::NAME_EXPECTED + FileStorage::INSIDE_MAP;
}
void FileStorage::startWriteStruct(const String& name, int struct_flags, const String& typeName)
{
p->startWriteStruct(name.c_str(), struct_flags, typeName.c_str());
elname = String();
if ((struct_flags & FileNode::TYPE_MASK) == FileNode::SEQ)
state = FileStorage::VALUE_EXPECTED;
else
state = FileStorage::NAME_EXPECTED + FileStorage::INSIDE_MAP;
}
void FileStorage::endWriteStruct()
{
p->endWriteStruct();
state = p->write_stack.empty() || FileNode::isMap(p->write_stack.back().flags) ?
FileStorage::NAME_EXPECTED + FileStorage::INSIDE_MAP :
FileStorage::VALUE_EXPECTED;
elname = String();
}
FileStorage::~FileStorage()
{
p.release();
}
bool FileStorage::open(const String& filename, int flags, const String& encoding)
{
bool ok = p->open(filename.c_str(), flags, encoding.c_str());
if(ok)
state = FileStorage::NAME_EXPECTED + FileStorage::INSIDE_MAP;
return ok;
}
bool FileStorage::isOpened() const { return p->is_opened; }
void FileStorage::release()
{
p->release();
}
FileNode FileStorage::root(int i) const
{
if( p.empty() || p->roots.empty() || i < 0 || i >= (int)p->roots.size() )
return FileNode();
return p->roots[i];
}
FileNode FileStorage::getFirstTopLevelNode() const
{
FileNode r = root();
FileNodeIterator it = r.begin();
return it != r.end() ? *it : FileNode();
}
std::string FileStorage::getDefaultObjectName(const std::string& _filename)
{
static const char* stubname = "unnamed";
const char* filename = _filename.c_str();
const char* ptr2 = filename + _filename.size();
const char* ptr = ptr2 - 1;
cv::AutoBuffer<char> name_buf(_filename.size()+1);
while( ptr >= filename && *ptr != '\\' && *ptr != '/' && *ptr != ':' )
{
if( *ptr == '.' && (!*ptr2 || strncmp(ptr2, ".gz", 3) == 0) )
ptr2 = ptr;
ptr--;
}
ptr++;
if( ptr == ptr2 )
CV_Error( CV_StsBadArg, "Invalid filename" );
char* name = name_buf.data();
// name must start with letter or '_'
if( !cv_isalpha(*ptr) && *ptr!= '_' ){
*name++ = '_';
}
while( ptr < ptr2 )
{
char c = *ptr++;
if( !cv_isalnum(c) && c != '-' && c != '_' )
c = '_';
*name++ = c;
}
*name = '\0';
name = name_buf.data();
if( strcmp( name, "_" ) == 0 )
strcpy( name, stubname );
return name;
}
int FileStorage::getFormat() const
{
return p->fmt;
}
FileNode FileStorage::operator [](const char* key) const
{
if( p->roots.empty() )
return FileNode();
return p->roots[0][key];
}
FileNode FileStorage::operator [](const std::string& key) const
{
if( p->roots.empty() )
return FileNode();
return p->roots[0][key];
}
String FileStorage::releaseAndGetString()
{
String buf;
p->release(&buf);
return buf;
}
void FileStorage::writeRaw( const String& fmt, const void* vec, size_t len )
{
p->writeRawData(fmt, (const uchar*)vec, len);
}
void FileStorage::writeComment( const String& comment, bool eol_comment )
{
p->writeComment(comment.c_str(), eol_comment);
}
void writeScalar( FileStorage& fs, int value )
{
fs.p->write(String(), value);
}
void writeScalar( FileStorage& fs, float value )
{
fs.p->write(String(), (double)value);
}
void writeScalar( FileStorage& fs, double value )
{
fs.p->write(String(), value);
}
void writeScalar( FileStorage& fs, const String& value )
{
fs.p->write(String(), value);
}
void write( FileStorage& fs, const String& name, int value )
{
fs.p->write(name, value);
}
void write( FileStorage& fs, const String& name, float value )
{
fs.p->write(name, (double)value);
}
void write( FileStorage& fs, const String& name, double value )
{
fs.p->write(name, value);
}
void write( FileStorage& fs, const String& name, const String& value )
{
fs.p->write(name, value);
}
void FileStorage::write(const String& name, int val) { p->write(name, val); }
void FileStorage::write(const String& name, double val) { p->write(name, val); }
void FileStorage::write(const String& name, const String& val) { p->write(name, val); }
void FileStorage::write(const String& name, const Mat& val) { cv::write(*this, name, val); }
void FileStorage::write(const String& name, const std::vector<String>& val) { cv::write(*this, name, val); }
FileStorage& operator << (FileStorage& fs, const String& str)
{
enum { NAME_EXPECTED = FileStorage::NAME_EXPECTED,
VALUE_EXPECTED = FileStorage::VALUE_EXPECTED,
INSIDE_MAP = FileStorage::INSIDE_MAP };
const char* _str = str.c_str();
if( !fs.isOpened() || !_str )
return fs;
Ptr<FileStorage::Impl>& fs_impl = fs.p;
char c = *_str;
if( c == '}' || c == ']' )
{
if( fs_impl->write_stack.empty() )
CV_Error_( CV_StsError, ("Extra closing '%c'", *_str) );
int struct_flags = fs_impl->write_stack.back().flags;
char expected_bracket = FileNode::isMap(struct_flags) ? '}' : ']';
if( c != expected_bracket )
CV_Error_( CV_StsError, ("The closing '%c' does not match the opening '%c'", c, expected_bracket));
fs_impl->endWriteStruct();
CV_Assert(!fs_impl->write_stack.empty());
struct_flags = fs_impl->write_stack.back().flags;
fs.state = FileNode::isMap(struct_flags) ? INSIDE_MAP + NAME_EXPECTED : VALUE_EXPECTED;
fs.elname = String();
}
else if( fs.state == NAME_EXPECTED + INSIDE_MAP )
{
if (!cv_isalpha(c) && c != '_')
CV_Error_( CV_StsError, ("Incorrect element name %s; should start with a letter or '_'", _str) );
fs.elname = str;
fs.state = VALUE_EXPECTED + INSIDE_MAP;
}
else if( (fs.state & 3) == VALUE_EXPECTED )
{
if( c == '{' || c == '[' )
{
int struct_flags = c == '{' ? FileNode::MAP : FileNode::SEQ;
fs.state = struct_flags == FileNode::MAP ? INSIDE_MAP + NAME_EXPECTED : VALUE_EXPECTED;
_str++;
if( *_str == ':' )
{
_str++;
if( !*_str )
struct_flags |= FileNode::FLOW;
}
fs_impl->startWriteStruct(!fs.elname.empty() ? fs.elname.c_str() : 0, struct_flags, *_str ? _str : 0 );
fs.elname = String();
}
else
{
write( fs, fs.elname, (c == '\\' && (_str[1] == '{' || _str[1] == '}' ||
_str[1] == '[' || _str[1] == ']')) ? String(_str+1) : str );
if( fs.state == INSIDE_MAP + VALUE_EXPECTED )
fs.state = INSIDE_MAP + NAME_EXPECTED;
}
}
else
CV_Error( CV_StsError, "Invalid fs.state" );
return fs;
}
FileNode::FileNode()
{
fs = 0;
blockIdx = ofs = 0;
}
FileNode::FileNode(const FileStorage* _fs, size_t _blockIdx, size_t _ofs)
{
fs = _fs;
blockIdx = _blockIdx;
ofs = _ofs;
}
FileNode::FileNode(const FileNode& node)
{
fs = node.fs;
blockIdx = node.blockIdx;
ofs = node.ofs;
}
FileNode FileNode::operator[](const std::string& nodename) const
{
if(!fs)
return FileNode();
CV_Assert( isMap() );
unsigned key = fs->p->getStringOfs(nodename);
size_t i, sz = size();
FileNodeIterator it = begin();
for( i = 0; i < sz; i++, ++it )
{
FileNode n = *it;
const uchar* p = n.ptr();
unsigned key2 = (unsigned)readInt(p + 1);
CV_Assert( key2 < fs->p->str_hash_data.size() );
if( key == key2 )
return n;
}
return FileNode();
}
FileNode FileNode::operator[](const char* nodename) const
{
return this->operator[](std::string(nodename));
}
FileNode FileNode::operator[](int i) const
{
if(!fs)
return FileNode();
CV_Assert( isSeq() );
int sz = (int)size();
CV_Assert( 0 <= i && i < sz );
FileNodeIterator it = begin();
it += i;
return *it;
}
std::vector<String> FileNode::keys() const
{
CV_Assert(isMap());
std::vector<String> res;
res.reserve(size());
for (FileNodeIterator it = begin(); it != end(); ++it)
{
res.push_back((*it).name());
}
return res;
}
int FileNode::type() const
{
const uchar* p = ptr();
if(!p)
return NONE;
return (*p & TYPE_MASK);
}
bool FileNode::isMap(int flags) { return (flags & TYPE_MASK) == MAP; }
bool FileNode::isSeq(int flags) { return (flags & TYPE_MASK) == SEQ; }
bool FileNode::isCollection(int flags) { return isMap(flags) || isSeq(flags); }
bool FileNode::isFlow(int flags) { return (flags & FLOW) != 0; }
bool FileNode::isEmptyCollection(int flags) { return (flags & EMPTY) != 0; }
bool FileNode::empty() const { return fs == 0; }
bool FileNode::isNone() const { return type() == NONE; }
bool FileNode::isSeq() const { return type() == SEQ; }
bool FileNode::isMap() const { return type() == MAP; }
bool FileNode::isInt() const { return type() == INT; }
bool FileNode::isReal() const { return type() == REAL; }
bool FileNode::isString() const { return type() == STRING; }
bool FileNode::isNamed() const
{
const uchar* p = ptr();
if(!p)
return false;
return (*p & NAMED) != 0;
}
std::string FileNode::name() const
{
const uchar* p = ptr();
if(!p)
return std::string();
size_t nameofs = p[1] | (p[2]<<8) | (p[3]<<16) | (p[4]<<24);
return fs->p->getName(nameofs);
}
FileNode::operator int() const
{
const uchar* p = ptr();
if(!p)
return 0;
int tag = *p;
int type = (tag & TYPE_MASK);
p += (tag & NAMED) ? 5 : 1;
if( type == INT )
{
return readInt(p);
}
else if( type == REAL )
{
return cvRound(readReal(p));
}
else
return 0x7fffffff;
}
FileNode::operator float() const
{
const uchar* p = ptr();
if(!p)
return 0.f;
int tag = *p;
int type = (tag & TYPE_MASK);
p += (tag & NAMED) ? 5 : 1;
if( type == INT )
{
return (float)readInt(p);
}
else if( type == REAL )
{
return (float)readReal(p);
}
else
return FLT_MAX;
}
FileNode::operator double() const
{
const uchar* p = ptr();
if(!p)
return 0.f;
int tag = *p;
int type = (tag & TYPE_MASK);
p += (tag & NAMED) ? 5 : 1;
if( type == INT )
{
return (double)readInt(p);
}
else if( type == REAL )
{
return readReal(p);
}
else
return DBL_MAX;
}
double FileNode::real() const { return double(*this); }
std::string FileNode::string() const
{
const uchar* p = ptr();
if( !p || (*p & TYPE_MASK) != STRING )
return std::string();
p += (*p & NAMED) ? 5 : 1;
size_t sz = (size_t)(unsigned)readInt(p);
return std::string((const char*)(p + 4), sz - 1);
}
Mat FileNode::mat() const { Mat value; read(*this, value, Mat()); return value; }
FileNodeIterator FileNode::begin() const { return FileNodeIterator(*this, false); }
FileNodeIterator FileNode::end() const { return FileNodeIterator(*this, true); }
void FileNode::readRaw( const std::string& fmt, void* vec, size_t len ) const
{
FileNodeIterator it = begin();
it.readRaw( fmt, vec, len );
}
size_t FileNode::size() const
{
const uchar* p = ptr();
if( !p )
return 0;
int tag = *p;
int tp = tag & TYPE_MASK;
if( tp == MAP || tp == SEQ )
{
if( tag & NAMED )
p += 4;
return (size_t)(unsigned)readInt(p + 5);
}
return tp != NONE;
}
size_t FileNode::rawSize() const
{
const uchar* p0 = ptr(), *p = p0;
if( !p )
return 0;
int tag = *p++;
int tp = tag & TYPE_MASK;
if( tag & NAMED )
p += 4;
size_t sz0 = (size_t)(p - p0);
if( tp == INT )
return sz0 + 4;
if( tp == REAL )
return sz0 + 8;
if( tp == NONE )
return sz0;
CV_Assert( tp == STRING || tp == SEQ || tp == MAP );
return sz0 + 4 + readInt(p);
}
uchar* FileNode::ptr()
{
return !fs ? 0 : (uchar*)fs->p->getNodePtr(blockIdx, ofs);
}
const uchar* FileNode::ptr() const
{
return !fs ? 0 : fs->p->getNodePtr(blockIdx, ofs);
}
void FileNode::setValue( int type, const void* value, int len )
{
uchar *p = ptr();
CV_Assert(p != 0);
int tag = *p;
int current_type = tag & TYPE_MASK;
CV_Assert( current_type == NONE || current_type == type );
int sz = 1;
if( tag & NAMED )
sz += 4;
if( type == INT )
sz += 4;
else if( type == REAL )
sz += 8;
else if( type == STRING )
{
if( len < 0 )
len = (int)strlen((const char*)value);
sz += 4 + len + 1; // besides the string content,
// take the size (4 bytes) and the final '\0' into account
}
else
CV_Error(Error::StsNotImplemented, "Only scalar types can be dynamically assigned to a file node");
p = fs->p->reserveNodeSpace(*this, sz);
*p++ = (uchar)(type | (tag & NAMED));
if( tag & NAMED )
p += 4;
if( type == INT )
{
int ival = *(const int*)value;
writeInt(p, ival);
}
else if( type == REAL )
{
double dbval = *(const double*)value;
writeReal(p, dbval);
}
else if( type == STRING )
{
const char* str = (const char*)value;
writeInt(p, len + 1);
memcpy(p + 4, str, len);
p[4 + len] = (uchar)'\0';
}
}
FileNodeIterator::FileNodeIterator()
{
fs = 0;
blockIdx = 0;
ofs = 0;
blockSize = 0;
nodeNElems = 0;
idx = 0;
}
FileNodeIterator::FileNodeIterator( const FileNode& node, bool seekEnd )
{
fs = node.fs;
idx = 0;
if( !fs )
blockIdx = ofs = blockSize = nodeNElems = 0;
else
{
blockIdx = node.blockIdx;
ofs = node.ofs;
bool collection = node.isSeq() || node.isMap();
if( node.isNone() )
{
nodeNElems = 0;
}
else if( !collection )
{
nodeNElems = 1;
if( seekEnd )
{
idx = 1;
ofs += node.rawSize();
}
}
else
{
nodeNElems = node.size();
const uchar* p0 = node.ptr(), *p = p0 + 1;
if(*p0 & FileNode::NAMED )
p += 4;
if( !seekEnd )
ofs += (p - p0) + 8;
else
{
size_t rawsz = (size_t)(unsigned)readInt(p);
ofs += (p - p0) + 4 + rawsz;
idx = nodeNElems;
}
}
fs->p->normalizeNodeOfs(blockIdx, ofs);
blockSize = fs->p->fs_data_blksz[blockIdx];
}
}
FileNodeIterator::FileNodeIterator(const FileNodeIterator& it)
{
fs = it.fs;
blockIdx = it.blockIdx;
ofs = it.ofs;
blockSize = it.blockSize;
nodeNElems = it.nodeNElems;
idx = it.idx;
}
FileNode FileNodeIterator::operator *() const
{
return FileNode(idx < nodeNElems ? fs : 0, blockIdx, ofs);
}
FileNodeIterator& FileNodeIterator::operator ++ ()
{
if( idx == nodeNElems || !fs )
return *this;
idx++;
FileNode n(fs, blockIdx, ofs);
ofs += n.rawSize();
if( ofs >= blockSize )
{
fs->p->normalizeNodeOfs(blockIdx, ofs);
blockSize = fs->p->fs_data_blksz[blockIdx];
}
return *this;
}
FileNodeIterator FileNodeIterator::operator ++ (int)
{
FileNodeIterator it = *this;
++(*this);
return it;
}
FileNodeIterator& FileNodeIterator::operator += (int _ofs)
{
CV_Assert( _ofs >= 0 );
for( ; _ofs > 0; _ofs-- )
this->operator ++();
return *this;
}
FileNodeIterator& FileNodeIterator::readRaw( const String& fmt, void* _data0, size_t maxsz)
{
if( fs && idx < nodeNElems )
{
uchar* data0 = (uchar*)_data0;
int fmt_pairs[CV_FS_MAX_FMT_PAIRS*2];
int fmt_pair_count = fs::decodeFormat( fmt.c_str(), fmt_pairs, CV_FS_MAX_FMT_PAIRS );
size_t esz = fs::calcStructSize( fmt.c_str(), 0 );
CV_Assert( maxsz % esz == 0 );
maxsz /= esz;
for( ; maxsz > 0; maxsz--, data0 += esz )
{
size_t offset = 0;
for( int k = 0; k < fmt_pair_count; k++ )
{
int elem_type = fmt_pairs[k*2+1];
int elem_size = CV_ELEM_SIZE(elem_type);
int count = fmt_pairs[k*2];
offset = alignSize( offset, elem_size );
uchar* data = data0 + offset;
for( int i = 0; i < count; i++, ++(*this) )
{
FileNode node = *(*this);
if( node.isInt() )
{
int ival = (int)node;
switch( elem_type )
{
case CV_8U:
*(uchar*)data = saturate_cast<uchar>(ival);
data++;
break;
case CV_8S:
*(char*)data = saturate_cast<schar>(ival);
data++;
break;
case CV_16U:
*(ushort*)data = saturate_cast<ushort>(ival);
data += sizeof(ushort);
break;
case CV_16S:
*(short*)data = saturate_cast<short>(ival);
data += sizeof(short);
break;
case CV_32S:
*(int*)data = ival;
data += sizeof(int);
break;
case CV_32F:
*(float*)data = (float)ival;
data += sizeof(float);
break;
case CV_64F:
*(double*)data = (double)ival;
data += sizeof(double);
break;
case CV_16F:
*(float16_t*)data = float16_t((float)ival);
data += sizeof(float16_t);
break;
default:
CV_Error( Error::StsUnsupportedFormat, "Unsupported type" );
}
}
else if( node.isReal() )
{
double fval = (double)node;
switch( elem_type )
{
case CV_8U:
*(uchar*)data = saturate_cast<uchar>(fval);
data++;
break;
case CV_8S:
*(char*)data = saturate_cast<schar>(fval);
data++;
break;
case CV_16U:
*(ushort*)data = saturate_cast<ushort>(fval);
data += sizeof(ushort);
break;
case CV_16S:
*(short*)data = saturate_cast<short>(fval);
data += sizeof(short);
break;
case CV_32S:
*(int*)data = saturate_cast<int>(fval);
data += sizeof(int);
break;
case CV_32F:
*(float*)data = (float)fval;
data += sizeof(float);
break;
case CV_64F:
*(double*)data = fval;
data += sizeof(double);
break;
case CV_16F:
*(float16_t*)data = float16_t((float)fval);
data += sizeof(float16_t);
break;
default:
CV_Error( Error::StsUnsupportedFormat, "Unsupported type" );
}
}
else
CV_Error( Error::StsError, "readRawData can only be used to read plain sequences of numbers" );
}
offset = (int)(data - data0);
}
}
}
return *this;
}
bool FileNodeIterator::equalTo(const FileNodeIterator& it) const
{
return fs == it.fs && blockIdx == it.blockIdx && ofs == it.ofs &&
idx == it.idx && nodeNElems == it.nodeNElems;
}
size_t FileNodeIterator::remaining() const
{
return nodeNElems - idx;
}
bool operator == ( const FileNodeIterator& it1, const FileNodeIterator& it2 )
{
return it1.equalTo(it2);
}
bool operator != ( const FileNodeIterator& it1, const FileNodeIterator& it2 )
{
return !it1.equalTo(it2);
}
void read(const FileNode& node, int& val, int default_val)
{
val = default_val;
if( !node.empty() )
{
val = (int)node;
}
}
void read(const FileNode& node, double& val, double default_val)
{
val = default_val;
if( !node.empty() )
{
val = (double)node;
}
}
void read(const FileNode& node, float& val, float default_val)
{
val = default_val;
if( !node.empty() )
{
val = (float)node;
}
}
void read(const FileNode& node, std::string& val, const std::string& default_val)
{
val = default_val;
if( !node.empty() )
{
val = (std::string)node;
}
}
FileStorage_API::~FileStorage_API() {}
namespace internal
{
WriteStructContext::WriteStructContext(FileStorage& _fs, const std::string& name,
int flags, const std::string& typeName)
{
fs = &_fs;
fs->startWriteStruct(name, flags, typeName);
}
WriteStructContext::~WriteStructContext()
{
fs->endWriteStruct();
}
}
}