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persistence.cpp
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5570 lines (4706 loc) · 161 KB
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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
#include <ctype.h>
#include <deque>
#include <iterator>
#include <wchar.h>
#define USE_ZLIB 1
#ifdef __APPLE__
# include "TargetConditionals.h"
# if (defined TARGET_OS_IPHONE && TARGET_OS_IPHONE) || (defined TARGET_IPHONE_SIMULATOR && TARGET_IPHONE_SIMULATOR)
# undef USE_ZLIB
# define USE_ZLIB 0
typedef void* gzFile;
# endif
#endif
#if USE_ZLIB
# ifndef _LFS64_LARGEFILE
# define _LFS64_LARGEFILE 0
# endif
# ifndef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 0
# endif
# include <zlib.h>
#endif
/****************************************************************************************\
* Common macros and type definitions *
\****************************************************************************************/
#define cv_isprint(c) ((uchar)(c) >= (uchar)' ')
#define cv_isprint_or_tab(c) ((uchar)(c) >= (uchar)' ' || (c) == '\t')
static inline bool cv_isalnum(char c)
{
return ('0' <= c && c <= '9') || ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
}
static inline bool cv_isalpha(char c)
{
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
}
static inline bool cv_isdigit(char c)
{
return '0' <= c && c <= '9';
}
static inline bool cv_isspace(char c)
{
return (9 <= c && c <= 13) || c == ' ';
}
static char* icv_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;
}
cv::string cv::FileStorage::getDefaultObjectName(const 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;
// 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;
if( strcmp( name, "_" ) == 0 )
strcpy( name, stubname );
return cv::string(name);
}
namespace cv
{
#if !defined(ANDROID) || (defined(_GLIBCXX_USE_WCHAR_T) && _GLIBCXX_USE_WCHAR_T)
string fromUtf16(const WString& str)
{
cv::AutoBuffer<char> _buf(str.size()*4 + 1);
char* buf = _buf;
size_t sz = wcstombs(buf, str.c_str(), str.size());
if( sz == (size_t)-1 )
return string();
buf[sz] = '\0';
return string(buf);
}
WString toUtf16(const string& str)
{
cv::AutoBuffer<wchar_t> _buf(str.size() + 1);
wchar_t* buf = _buf;
size_t sz = mbstowcs(buf, str.c_str(), str.size());
if( sz == (size_t)-1 )
return WString();
buf[sz] = '\0';
return WString(buf);
}
#endif
}
typedef struct CvGenericHash
{
CV_SET_FIELDS()
int tab_size;
void** table;
}
CvGenericHash;
typedef CvGenericHash CvStringHash;
typedef struct CvFileMapNode
{
CvFileNode value;
const CvStringHashNode* key;
struct CvFileMapNode* next;
}
CvFileMapNode;
typedef struct CvXMLStackRecord
{
CvMemStoragePos pos;
CvString struct_tag;
int struct_indent;
int struct_flags;
}
CvXMLStackRecord;
#define CV_XML_OPENING_TAG 1
#define CV_XML_CLOSING_TAG 2
#define CV_XML_EMPTY_TAG 3
#define CV_XML_HEADER_TAG 4
#define CV_XML_DIRECTIVE_TAG 5
//typedef void (*CvParse)( struct CvFileStorage* fs );
typedef void (*CvStartWriteStruct)( struct CvFileStorage* fs, const char* key,
int struct_flags, const char* type_name );
typedef void (*CvEndWriteStruct)( struct CvFileStorage* fs );
typedef void (*CvWriteInt)( struct CvFileStorage* fs, const char* key, int value );
typedef void (*CvWriteReal)( struct CvFileStorage* fs, const char* key, double value );
typedef void (*CvWriteString)( struct CvFileStorage* fs, const char* key,
const char* value, int quote );
typedef void (*CvWriteComment)( struct CvFileStorage* fs, const char* comment, int eol_comment );
typedef void (*CvStartNextStream)( struct CvFileStorage* fs );
typedef struct CvFileStorage
{
int flags;
int fmt;
int write_mode;
int is_first;
CvMemStorage* memstorage;
CvMemStorage* dststorage;
CvMemStorage* strstorage;
CvStringHash* str_hash;
CvSeq* roots;
CvSeq* write_stack;
int struct_indent;
int struct_flags;
CvString struct_tag;
int space;
char* filename;
FILE* file;
gzFile gzfile;
char* buffer;
char* buffer_start;
char* buffer_end;
int wrap_margin;
int lineno;
int dummy_eof;
const char* errmsg;
char errmsgbuf[128];
CvStartWriteStruct start_write_struct;
CvEndWriteStruct end_write_struct;
CvWriteInt write_int;
CvWriteReal write_real;
CvWriteString write_string;
CvWriteComment write_comment;
CvStartNextStream start_next_stream;
const char* strbuf;
size_t strbufsize, strbufpos;
std::deque<char>* outbuf;
bool is_opened;
}
CvFileStorage;
static void icvPuts( CvFileStorage* fs, const char* str )
{
if( fs->outbuf )
std::copy(str, str + strlen(str), std::back_inserter(*fs->outbuf));
else if( fs->file )
fputs( str, fs->file );
#if USE_ZLIB
else if( fs->gzfile )
gzputs( fs->gzfile, str );
#endif
else
CV_Error( CV_StsError, "The storage is not opened" );
}
static char* icvGets( CvFileStorage* fs, char* str, int maxCount )
{
if( fs->strbuf )
{
size_t i = fs->strbufpos, len = fs->strbufsize;
int j = 0;
const char* instr = fs->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';
fs->strbufpos = i;
return j > 1 ? str : 0;
}
if( fs->file )
return fgets( str, maxCount, fs->file );
#if USE_ZLIB
if( fs->gzfile )
return gzgets( fs->gzfile, str, maxCount );
#endif
CV_Error( CV_StsError, "The storage is not opened" );
return 0;
}
static int icvEof( CvFileStorage* fs )
{
if( fs->strbuf )
return fs->strbufpos >= fs->strbufsize;
if( fs->file )
return feof(fs->file);
#if USE_ZLIB
if( fs->gzfile )
return gzeof(fs->gzfile);
#endif
return false;
}
static void icvCloseFile( CvFileStorage* fs )
{
if( fs->file )
fclose( fs->file );
#if USE_ZLIB
else if( fs->gzfile )
gzclose( fs->gzfile );
#endif
fs->file = 0;
fs->gzfile = 0;
fs->strbuf = 0;
fs->strbufpos = 0;
fs->is_opened = false;
}
static void icvRewind( CvFileStorage* fs )
{
if( fs->file )
rewind(fs->file);
#if USE_ZLIB
else if( fs->gzfile )
gzrewind(fs->gzfile);
#endif
fs->strbufpos = 0;
}
#define CV_YML_INDENT 3
#define CV_XML_INDENT 2
#define CV_YML_INDENT_FLOW 1
#define CV_FS_MAX_LEN 4096
#define CV_FILE_STORAGE ('Y' + ('A' << 8) + ('M' << 16) + ('L' << 24))
#define CV_IS_FILE_STORAGE(fs) ((fs) != 0 && (fs)->flags == CV_FILE_STORAGE)
#define CV_CHECK_FILE_STORAGE(fs) \
{ \
if( !CV_IS_FILE_STORAGE(fs) ) \
CV_Error( (fs) ? CV_StsBadArg : CV_StsNullPtr, \
"Invalid pointer to file storage" ); \
}
#define CV_CHECK_OUTPUT_FILE_STORAGE(fs) \
{ \
CV_CHECK_FILE_STORAGE(fs); \
if( !fs->write_mode ) \
CV_Error( CV_StsError, "The file storage is opened for reading" ); \
}
CV_IMPL const char*
cvAttrValue( const CvAttrList* attr, const char* attr_name )
{
while( attr && attr->attr )
{
int i;
for( i = 0; attr->attr[i*2] != 0; i++ )
{
if( strcmp( attr_name, attr->attr[i*2] ) == 0 )
return attr->attr[i*2+1];
}
attr = attr->next;
}
return 0;
}
static CvGenericHash*
cvCreateMap( int flags, int header_size, int elem_size,
CvMemStorage* storage, int start_tab_size )
{
if( header_size < (int)sizeof(CvGenericHash) )
CV_Error( CV_StsBadSize, "Too small map header_size" );
if( start_tab_size <= 0 )
start_tab_size = 16;
CvGenericHash* map = (CvGenericHash*)cvCreateSet( flags, header_size, elem_size, storage );
map->tab_size = start_tab_size;
start_tab_size *= sizeof(map->table[0]);
map->table = (void**)cvMemStorageAlloc( storage, start_tab_size );
memset( map->table, 0, start_tab_size );
return map;
}
#define CV_PARSE_ERROR( errmsg ) \
icvParseError( fs, CV_Func, (errmsg), __FILE__, __LINE__ )
static void
icvParseError( CvFileStorage* fs, const char* func_name,
const char* err_msg, const char* source_file, int source_line )
{
char buf[1<<10];
sprintf( buf, "%s(%d): %s", fs->filename, fs->lineno, err_msg );
cvError( CV_StsParseError, func_name, buf, source_file, source_line );
}
static void
icvFSCreateCollection( CvFileStorage* fs, int tag, CvFileNode* collection )
{
if( CV_NODE_IS_MAP(tag) )
{
if( collection->tag != CV_NODE_NONE )
{
assert( fs->fmt == CV_STORAGE_FORMAT_XML );
CV_PARSE_ERROR( "Sequence element should not have name (use <_></_>)" );
}
collection->data.map = cvCreateMap( 0, sizeof(CvFileNodeHash),
sizeof(CvFileMapNode), fs->memstorage, 16 );
}
else
{
CvSeq* seq;
seq = cvCreateSeq( 0, sizeof(CvSeq), sizeof(CvFileNode), fs->memstorage );
// if <collection> contains some scalar element, add it to the newly created collection
if( CV_NODE_TYPE(collection->tag) != CV_NODE_NONE )
cvSeqPush( seq, collection );
collection->data.seq = seq;
}
collection->tag = tag;
cvSetSeqBlockSize( collection->data.seq, 8 );
}
/*static void
icvFSReleaseCollection( CvSeq* seq )
{
if( seq )
{
int is_map = CV_IS_SET(seq);
CvSeqReader reader;
int i, total = seq->total;
cvStartReadSeq( seq, &reader, 0 );
for( i = 0; i < total; i++ )
{
CvFileNode* node = (CvFileNode*)reader.ptr;
if( (!is_map || CV_IS_SET_ELEM( node )) && CV_NODE_IS_COLLECTION(node->tag) )
{
if( CV_NODE_IS_USER(node->tag) && node->info && node->data.obj.decoded )
cvRelease( (void**)&node->data.obj.decoded );
if( !CV_NODE_SEQ_IS_SIMPLE( node->data.seq ))
icvFSReleaseCollection( node->data.seq );
}
CV_NEXT_SEQ_ELEM( seq->elem_size, reader );
}
}
}*/
static char*
icvFSDoResize( CvFileStorage* fs, char* ptr, int len )
{
char* new_ptr = 0;
int written_len = (int)(ptr - fs->buffer_start);
int new_size = (int)((fs->buffer_end - fs->buffer_start)*3/2);
new_size = MAX( written_len + len, new_size );
new_ptr = (char*)cvAlloc( new_size + 256 );
fs->buffer = new_ptr + (fs->buffer - fs->buffer_start);
if( written_len > 0 )
memcpy( new_ptr, fs->buffer_start, written_len );
fs->buffer_start = new_ptr;
fs->buffer_end = fs->buffer_start + new_size;
new_ptr += written_len;
return new_ptr;
}
inline char* icvFSResizeWriteBuffer( CvFileStorage* fs, char* ptr, int len )
{
return ptr + len < fs->buffer_end ? ptr : icvFSDoResize( fs, ptr, len );
}
static char*
icvFSFlush( CvFileStorage* fs )
{
char* ptr = fs->buffer;
int indent;
if( ptr > fs->buffer_start + fs->space )
{
ptr[0] = '\n';
ptr[1] = '\0';
icvPuts( fs, fs->buffer_start );
fs->buffer = fs->buffer_start;
}
indent = fs->struct_indent;
if( fs->space != indent )
{
if( fs->space < indent )
memset( fs->buffer_start + fs->space, ' ', indent - fs->space );
fs->space = indent;
}
ptr = fs->buffer = fs->buffer_start + fs->space;
return ptr;
}
static void
icvClose( CvFileStorage* fs, std::string* out )
{
if( out )
out->clear();
if( !fs )
CV_Error( CV_StsNullPtr, "NULL double pointer to file storage" );
if( fs->is_opened )
{
if( fs->write_mode && (fs->file || fs->gzfile || fs->outbuf) )
{
if( fs->write_stack )
{
while( fs->write_stack->total > 0 )
cvEndWriteStruct(fs);
}
icvFSFlush(fs);
if( fs->fmt == CV_STORAGE_FORMAT_XML )
icvPuts( fs, "</opencv_storage>\n" );
}
icvCloseFile(fs);
}
if( fs->outbuf && out )
{
out->resize(fs->outbuf->size());
std::copy(fs->outbuf->begin(), fs->outbuf->end(), out->begin());
}
}
/* closes file storage and deallocates buffers */
CV_IMPL void
cvReleaseFileStorage( CvFileStorage** p_fs )
{
if( !p_fs )
CV_Error( CV_StsNullPtr, "NULL double pointer to file storage" );
if( *p_fs )
{
CvFileStorage* fs = *p_fs;
*p_fs = 0;
icvClose(fs, 0);
cvReleaseMemStorage( &fs->strstorage );
cvFree( &fs->buffer_start );
cvReleaseMemStorage( &fs->memstorage );
if( fs->outbuf )
delete fs->outbuf;
memset( fs, 0, sizeof(*fs) );
cvFree( &fs );
}
}
#define CV_HASHVAL_SCALE 33
CV_IMPL CvStringHashNode*
cvGetHashedKey( CvFileStorage* fs, const char* str, int len, int create_missing )
{
CvStringHashNode* node = 0;
unsigned hashval = 0;
int i, tab_size;
if( !fs )
return 0;
CvStringHash* map = fs->str_hash;
if( len < 0 )
{
for( i = 0; str[i] != '\0'; i++ )
hashval = hashval*CV_HASHVAL_SCALE + (unsigned char)str[i];
len = i;
}
else for( i = 0; i < len; i++ )
hashval = hashval*CV_HASHVAL_SCALE + (unsigned char)str[i];
hashval &= INT_MAX;
tab_size = map->tab_size;
if( (tab_size & (tab_size - 1)) == 0 )
i = (int)(hashval & (tab_size - 1));
else
i = (int)(hashval % tab_size);
for( node = (CvStringHashNode*)(map->table[i]); node != 0; node = node->next )
{
if( node->hashval == hashval &&
node->str.len == len &&
memcmp( node->str.ptr, str, len ) == 0 )
break;
}
if( !node && create_missing )
{
node = (CvStringHashNode*)cvSetNew( (CvSet*)map );
node->hashval = hashval;
node->str = cvMemStorageAllocString( map->storage, str, len );
node->next = (CvStringHashNode*)(map->table[i]);
map->table[i] = node;
}
return node;
}
CV_IMPL CvFileNode*
cvGetFileNode( CvFileStorage* fs, CvFileNode* _map_node,
const CvStringHashNode* key,
int create_missing )
{
CvFileNode* value = 0;
int k = 0, attempts = 1;
if( !fs )
return 0;
CV_CHECK_FILE_STORAGE(fs);
if( !key )
CV_Error( CV_StsNullPtr, "Null key element" );
if( _map_node )
{
if( !fs->roots )
return 0;
attempts = fs->roots->total;
}
for( k = 0; k < attempts; k++ )
{
int i, tab_size;
CvFileNode* map_node = _map_node;
CvFileMapNode* another;
CvFileNodeHash* map;
if( !map_node )
map_node = (CvFileNode*)cvGetSeqElem( fs->roots, k );
if( !CV_NODE_IS_MAP(map_node->tag) )
{
if( (!CV_NODE_IS_SEQ(map_node->tag) || map_node->data.seq->total != 0) &&
CV_NODE_TYPE(map_node->tag) != CV_NODE_NONE )
CV_Error( CV_StsError, "The node is neither a map nor an empty collection" );
return 0;
}
map = map_node->data.map;
tab_size = map->tab_size;
if( (tab_size & (tab_size - 1)) == 0 )
i = (int)(key->hashval & (tab_size - 1));
else
i = (int)(key->hashval % tab_size);
for( another = (CvFileMapNode*)(map->table[i]); another != 0; another = another->next )
if( another->key == key )
{
if( !create_missing )
{
value = &another->value;
return value;
}
CV_PARSE_ERROR( "Duplicated key" );
}
if( k == attempts - 1 && create_missing )
{
CvFileMapNode* node = (CvFileMapNode*)cvSetNew( (CvSet*)map );
node->key = key;
node->next = (CvFileMapNode*)(map->table[i]);
map->table[i] = node;
value = (CvFileNode*)node;
}
}
return value;
}
CV_IMPL CvFileNode*
cvGetFileNodeByName( const CvFileStorage* fs, const CvFileNode* _map_node, const char* str )
{
CvFileNode* value = 0;
int i, len, tab_size;
unsigned hashval = 0;
int k = 0, attempts = 1;
if( !fs )
return 0;
CV_CHECK_FILE_STORAGE(fs);
if( !str )
CV_Error( CV_StsNullPtr, "Null element name" );
for( i = 0; str[i] != '\0'; i++ )
hashval = hashval*CV_HASHVAL_SCALE + (unsigned char)str[i];
hashval &= INT_MAX;
len = i;
if( !_map_node )
{
if( !fs->roots )
return 0;
attempts = fs->roots->total;
}
for( k = 0; k < attempts; k++ )
{
CvFileNodeHash* map;
const CvFileNode* map_node = _map_node;
CvFileMapNode* another;
if( !map_node )
map_node = (CvFileNode*)cvGetSeqElem( fs->roots, k );
if( !CV_NODE_IS_MAP(map_node->tag) )
{
if( (!CV_NODE_IS_SEQ(map_node->tag) || map_node->data.seq->total != 0) &&
CV_NODE_TYPE(map_node->tag) != CV_NODE_NONE )
CV_Error( CV_StsError, "The node is neither a map nor an empty collection" );
return 0;
}
map = map_node->data.map;
tab_size = map->tab_size;
if( (tab_size & (tab_size - 1)) == 0 )
i = (int)(hashval & (tab_size - 1));
else
i = (int)(hashval % tab_size);
for( another = (CvFileMapNode*)(map->table[i]); another != 0; another = another->next )
{
const CvStringHashNode* key = another->key;
if( key->hashval == hashval &&
key->str.len == len &&
memcmp( key->str.ptr, str, len ) == 0 )
{
value = &another->value;
return value;
}
}
}
return value;
}
CV_IMPL CvFileNode*
cvGetRootFileNode( const CvFileStorage* fs, int stream_index )
{
CV_CHECK_FILE_STORAGE(fs);
if( !fs->roots || (unsigned)stream_index >= (unsigned)fs->roots->total )
return 0;
return (CvFileNode*)cvGetSeqElem( fs->roots, stream_index );
}
/* returns the sequence element by its index */
/*CV_IMPL CvFileNode*
cvGetFileNodeFromSeq( CvFileStorage* fs,
CvFileNode* seq_node, int index )
{
CvFileNode* value = 0;
CvSeq* seq;
if( !seq_node )
seq = fs->roots;
else if( !CV_NODE_IS_SEQ(seq_node->tag) )
{
if( CV_NODE_IS_MAP(seq_node->tag) )
CV_Error( CV_StsError, "The node is map. Use cvGetFileNodeFromMap()." );
if( CV_NODE_TYPE(seq_node->tag) == CV_NODE_NONE )
CV_Error( CV_StsError, "The node is an empty object (None)." );
if( index != 0 && index != -1 )
CV_Error( CV_StsOutOfRange, "" );
value = seq_node;
EXIT;
}
else
seq = seq_node->data.seq;
if( !seq )
CV_Error( CV_StsNullPtr, "The file storage is empty" );
value = (CvFileNode*)cvGetSeqElem( seq, index, 0 );
return value;
}*/
static char*
icvDoubleToString( char* buf, double value )
{
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 )
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;
}
static char*
icvFloatToString( char* buf, float value )
{
Cv32suf val;
unsigned ieee754;
val.f = value;
ieee754 = val.u;
if( (ieee754 & 0x7f800000) != 0x7f800000 )
{
int ivalue = cvRound(value);
if( ivalue == value )
sprintf( buf, "%d.", ivalue );
else
{
static const char* fmt = "%.8e";
char* ptr = buf;
sprintf( buf, fmt, 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 void
icvProcessSpecialDouble( CvFileStorage* fs, char* buf, double* value, char** endptr )
{
char c = buf[0];
int inf_hi = 0x7ff00000;
if( c == '-' || c == '+' )
{
inf_hi = c == '-' ? 0xfff00000 : 0x7ff00000;
c = *++buf;
}
if( c != '.' )
CV_PARSE_ERROR( "Bad format of floating-point constant" );
union{double d; uint64 i;} v;
v.d = 0.;
if( toupper(buf[1]) == 'I' && toupper(buf[2]) == 'N' && toupper(buf[3]) == 'F' )
v.i = (uint64)inf_hi << 32;
else if( toupper(buf[1]) == 'N' && toupper(buf[2]) == 'A' && toupper(buf[3]) == 'N' )
v.i = (uint64)-1;
else
CV_PARSE_ERROR( "Bad format of floating-point constant" );
*value = v.d;
*endptr = buf + 4;
}
static double icv_strtod( CvFileStorage* fs, 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) )
icvProcessSpecialDouble( fs, ptr, &fval, endptr );
return fval;
}
/****************************************************************************************\
* YAML Parser *
\****************************************************************************************/
static char*
icvYMLSkipSpaces( CvFileStorage* fs, char* ptr, int min_indent, int max_comment_indent )
{
for(;;)
{
while( *ptr == ' ' )
ptr++;
if( *ptr == '#' )
{
if( ptr - fs->buffer_start > max_comment_indent )
return ptr;
*ptr = '\0';
}
else if( cv_isprint(*ptr) )
{
if( ptr - fs->buffer_start < min_indent )
CV_PARSE_ERROR( "Incorrect indentation" );
break;
}
else if( *ptr == '\0' || *ptr == '\n' || *ptr == '\r' )
{