SAGA API  v9.6
table_io.cpp
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1 
3 // //
4 // SAGA //
5 // //
6 // System for Automated Geoscientific Analyses //
7 // //
8 // Application Programming Interface //
9 // //
10 // Library: SAGA_API //
11 // //
12 //-------------------------------------------------------//
13 // //
14 // table_io.cpp //
15 // //
16 // Copyright (C) 2005 by Olaf Conrad //
17 // //
18 //-------------------------------------------------------//
19 // //
20 // This file is part of 'SAGA - System for Automated //
21 // Geoscientific Analyses'. //
22 // //
23 // This library is free software; you can redistribute //
24 // it and/or modify it under the terms of the GNU Lesser //
25 // General Public License as published by the Free //
26 // Software Foundation, either version 2.1 of the //
27 // License, or (at your option) any later version. //
28 // //
29 // This library is distributed in the hope that it will //
30 // be useful, but WITHOUT ANY WARRANTY; without even the //
31 // implied warranty of MERCHANTABILITY or FITNESS FOR A //
32 // PARTICULAR PURPOSE. See the GNU Lesser General Public //
33 // License for more details. //
34 // //
35 // You should have received a copy of the GNU Lesser //
36 // General Public License along with this program; if //
37 // not, see <http://www.gnu.org/licenses/>. //
38 // //
39 //-------------------------------------------------------//
40 // //
41 // contact: Olaf Conrad //
42 // Institute of Geography //
43 // University of Goettingen //
44 // Goldschmidtstr. 5 //
45 // 37077 Goettingen //
46 // Germany //
47 // //
48 // e-mail: oconrad@saga-gis.org //
49 // //
51 
52 //---------------------------------------------------------
53 #include "table.h"
54 #include "table_dbase.h"
55 
56 
58 // //
59 // //
60 // //
62 
63 //---------------------------------------------------------
64 bool CSG_Table::On_Reload(void)
65 {
66  return( Create(Get_File_Name(false)) );
67 }
68 
69 //---------------------------------------------------------
70 bool CSG_Table::On_Delete(void)
71 {
72  return( SG_File_Delete(Get_File_Name(false)) );
73 }
74 
75 
77 // //
79 
80 //---------------------------------------------------------
81 bool CSG_Table::Set_File_Encoding(int Encoding)
82 {
83  if( Encoding >= 0 && Encoding < SG_FILE_ENCODING_UNDEFINED )
84  {
85  m_Encoding = Encoding;
86 
87  return( true );
88  }
89 
90  return( false );
91 }
92 
93 
95 // //
97 
98 //---------------------------------------------------------
99 bool CSG_Table::Load(const CSG_String &FileName, int Format, SG_Char Separator, int Encoding)
100 {
101  Set_File_Encoding(Encoding);
102 
103  if( !SG_File_Exists(FileName) )
104  {
105  return( false );
106  }
107 
108  //-----------------------------------------------------
109  if( Format == TABLE_FILETYPE_Undefined )
110  {
111  Format = SG_File_Cmp_Extension(FileName, "dbf") ? TABLE_FILETYPE_DBase : TABLE_FILETYPE_Text;
112  }
113 
114  if( Separator == '\0' )
115  {
116  Separator = SG_File_Cmp_Extension(FileName, "csv") ? ',' : '\t'; // comma separated values or tab spaced text
117  }
118 
119  //-----------------------------------------------------
120  Destroy();
121 
122  switch( Format )
123  {
124  case TABLE_FILETYPE_Text: default: if( !_Load_Text (FileName, true , Separator) ) return( false ); break;
125  case TABLE_FILETYPE_Text_NoHeadLine: if( !_Load_Text (FileName, false, Separator) ) return( false ); break;
126  case TABLE_FILETYPE_DBase : if( !_Load_DBase(FileName ) ) return( false ); break;
127  }
128 
129  //-----------------------------------------------------
130  Set_Name(SG_File_Get_Name(FileName, false));
131 
132  Load_MetaData(FileName);
133 
134  CSG_MetaData *pFields = Get_MetaData_DB().Get_Child("FIELDS");
135 
136  if( pFields && pFields->Get_Children_Count() == Get_Field_Count() )
137  {
138  for(int iField=0; iField<Get_Field_Count(); iField++)
139  {
140  Set_Field_Name(iField, pFields->Get_Content(iField));
141  }
142  }
143 
144  //-----------------------------------------------------
145  return( true );
146 }
147 
148 //---------------------------------------------------------
149 bool CSG_Table::Save(const CSG_String &FileName, int Format)
150 {
151  return( Save(FileName, Format, '\0', m_Encoding) );
152 }
153 
154 //---------------------------------------------------------
155 bool CSG_Table::Save(const CSG_String &FileName, int Format, SG_Char Separator, int Encoding)
156 {
157  SG_UI_Msg_Add(CSG_String::Format("%s %s: %s...", _TL("Saving"), _TL("table"), FileName.c_str()), true);
158 
159  Set_File_Encoding(Encoding);
160 
161  //-----------------------------------------------------
162  if( Format <= TABLE_FILETYPE_Undefined || Format > TABLE_FILETYPE_DBase )
163  {
164  if( SG_File_Cmp_Extension(FileName, "dbf") )
165  {
166  Format = TABLE_FILETYPE_DBase;
167  }
168  else
169  {
170  Format = TABLE_FILETYPE_Text;
171 
172  if( Separator == '\0' )
173  {
174  Separator = SG_File_Cmp_Extension(FileName, "csv") ? ',' : '\t'; // comma separated values or tab spaced text
175  }
176  }
177  }
178 
179  //-----------------------------------------------------
180  bool bResult = false;
181 
182  switch( Format )
183  {
184  case TABLE_FILETYPE_Text: default: bResult = _Save_Text (FileName, true , Separator); break;
185  case TABLE_FILETYPE_Text_NoHeadLine: bResult = _Save_Text (FileName, false, Separator); break;
186  case TABLE_FILETYPE_DBase : bResult = _Save_DBase(FileName ); break;
187  }
188 
189  //-----------------------------------------------------
190  CSG_MetaData *pFields = Get_MetaData_DB().Get_Child("FIELDS");
191 
192  if( !pFields )
193  {
194  pFields = Get_MetaData_DB().Add_Child("FIELDS");
195  }
196 
197  pFields->Del_Children();
198 
199  for(int iField=0; iField<Get_Field_Count(); iField++)
200  {
201  pFields->Add_Child("FIELD", Get_Field_Name(iField))->Add_Property("TYPE", gSG_Data_Type_Identifier[Get_Field_Type(iField)]);
202  }
203 
204  //-----------------------------------------------------
205  if( bResult )
206  {
207  Set_Modified(false);
208 
209  Set_Update_Flag();
210 
211  Set_File_Type(Format);
212 
213  Set_File_Name(FileName, true);
214 
215  Save_MetaData(FileName);
216 
217  SG_UI_Msg_Add(_TL("okay"), false, SG_UI_MSG_STYLE_SUCCESS);
218 
219  return( true );
220  }
221 
222  SG_UI_Msg_Add(_TL("failed"), false, SG_UI_MSG_STYLE_FAILURE);
223 
224  return( false );
225 }
226 
227 
229 // //
230 // Text //
231 // //
233 
234 //---------------------------------------------------------
235 size_t CSG_Table::_Load_Text_Trim(CSG_String &s, const SG_Char Separator)
236 {
237  for(size_t i=0; i<s.Length(); i++)
238  {
239  SG_Char c = s[i];
240 
241  if( c == Separator || (c != ' ' && c != '\t' && c != '\n' && c != '\v' && c != '\f' && c != '\r') )
242  {
243  if( i > 0 )
244  {
245  s = s.Right(s.Length() - i);
246  }
247 
248  return( i );
249  }
250  }
251 
252  return( 0 );
253 }
254 
255 //---------------------------------------------------------
256 size_t CSG_Table::_Load_Text_EndQuote(const CSG_String &s, const SG_Char Separator)
257 {
258  if( s.Length() > 1 && s[0] == '\"' )
259  {
260  bool bInQuotes = true;
261 
262  for(size_t i=1; i<s.Length(); i++)
263  {
264  if( bInQuotes )
265  {
266  if( s[i] == '\"' )
267  {
268  bInQuotes = false;
269  }
270  }
271  else if( s[i] == '\"' )
272  {
273  bInQuotes = true;
274  }
275  else if( s[i] == Separator )
276  {
277  return( i );
278  }
279  }
280 
281  if( s[s.Length() - 1] == '\"' )
282  {
283  return( s.Length() );
284  }
285  }
286 
287  return( 0 );
288 }
289 
290 //---------------------------------------------------------
291 bool CSG_Table::_Load_Text(const CSG_String &FileName, bool bHeadline, const SG_Char Separator)
292 {
293  CSG_File Stream;
294 
295  if( Stream.Open(FileName, SG_FILE_R, false, m_Encoding) == false )
296  {
297  return( false );
298  }
299 
300  sLong fLength = Stream.Length();
301 
302  if( fLength <= 0 )
303  {
304  return( false );
305  }
306 
307  CSG_String sLine;
308 
309  if( !Stream.Read_Line(sLine) )
310  {
311  return( false );
312  }
313 
314  //-----------------------------------------------------
315  CSG_Table Table;
316 
317  _Load_Text_Trim(sLine, Separator);
318 
319  while( !sLine.is_Empty() )
320  {
321  CSG_String sField;
322 
323  if( sLine[0] == '\"' ) // value in quotas
324  {
325  sField = sLine.AfterFirst('\"').BeforeFirst('\"');
326  sLine = sLine.AfterFirst('\"').AfterFirst ('\"');
327  }
328  else
329  {
330  sField = sLine.BeforeFirst(Separator);
331  }
332 
333  sLine = sLine.AfterFirst(Separator); _Load_Text_Trim(sLine, Separator);
334 
335  if( !bHeadline || sField.Length() == 0 )
336  {
337  sField.Printf("F%02d", Table.Get_Field_Count() + 1);
338  }
339 
340  Table.Add_Field(sField, SG_DATATYPE_String);
341  }
342 
343  //-----------------------------------------------------
344  TSG_Data_Type *Type = new TSG_Data_Type[Table.Get_Field_Count()];
345 
346  for(int iField=0; iField<Table.Get_Field_Count(); iField++)
347  {
348  Type[iField] = SG_DATATYPE_Int;
349  }
350 
351  if( !bHeadline )
352  {
353  Stream.Seek_Start();
354  }
355 
356  while( Stream.Read_Line(sLine) && SG_UI_Process_Set_Progress((double)Stream.Tell(), (double)fLength) )
357  {
358  if( sLine.Length() < 1 )
359  {
360  continue;
361  }
362 
363  CSG_Table_Record *pRecord = Table.Add_Record();
364 
365  _Load_Text_Trim(sLine, Separator);
366 
367  for(int iField=0; iField<Table.Get_Field_Count() && !sLine.is_Empty(); iField++)
368  {
369  size_t Position = _Load_Text_EndQuote(sLine, Separator); CSG_String sField;
370 
371  if( Position > 0 ) // value in quotas !!!
372  {
373  if( Position - 2 > 0 )
374  {
375  sField = sLine.Mid(1, Position - 2);
376  }
377  else
378  {
379  sField.Clear();
380  }
381 
382  sLine = sLine.Right(sLine.Length() - Position);
383 
384  Type[iField] = SG_DATATYPE_String;
385  }
386  else
387  {
388  sField = sLine.BeforeFirst(Separator);
389  }
390 
391  sLine = sLine.AfterFirst(Separator); _Load_Text_Trim(sLine, Separator);
392 
393  //---------------------------------------------
394  if( Type[iField] != SG_DATATYPE_String && !sField.is_Empty() )
395  {
396  try
397  {
398  size_t pos; double Value = std::stod(sField.to_StdString(), &pos);
399 
400  if( pos < sField.Length() )
401  {
402  Type[iField] = SG_DATATYPE_String;
403  }
404  else if( Type[iField] != SG_DATATYPE_Double && (Value - (int)Value != 0. || sField.Find('.') >= 0) )
405  {
406  Type[iField] = SG_DATATYPE_Double;
407  }
408  }
409  catch(...)
410  {
411  Type[iField] = SG_DATATYPE_String;
412  }
413  }
414 
415  pRecord->Set_Value(iField, sField);
416  }
417  }
418 
419  //-----------------------------------------------------
420  if( Table.Get_Field_Count() > 0 )
421  {
422  for(int iField=0; iField<Table.Get_Field_Count(); iField++)
423  {
424  Add_Field(Table.Get_Field_Name(iField), Type[iField]);
425  }
426 
427  for(sLong iRecord=0; iRecord<Table.Get_Count() && SG_UI_Process_Set_Progress(iRecord, Table.Get_Count()); iRecord++)
428  {
429  CSG_Table_Record *pRecord = Add_Record();
430 
431  for(int iField=0; iField<Get_Field_Count(); iField++)
432  {
433  if( *Table[iRecord].asString(iField) )
434  {
435  pRecord->Set_Value(iField, Table[iRecord].asString(iField));
436  }
437  else
438  {
439  pRecord->Set_NoData(iField);
440  }
441  }
442  }
443  }
444 
445  delete[](Type);
446 
447  SG_UI_Process_Set_Ready();
448 
449  return( Get_Field_Count() > 0 );
450 }
451 
452 //---------------------------------------------------------
453 bool CSG_Table::_Save_Text(const CSG_String &FileName, bool bHeadline, const SG_Char Separator)
454 {
455  CSG_File Stream;
456 
457  if( Get_Field_Count() <= 0 || Stream.Open(FileName, SG_FILE_W, false, m_Encoding) == false )
458  {
459  return( false );
460  }
461 
462  //-----------------------------------------------------
463  for(int iField=0; iField<Get_Field_Count(); iField++)
464  {
465  Stream.Printf("%s%c", Get_Field_Name(iField), iField < Get_Field_Count() - 1 ? Separator : '\n');
466  }
467 
468  //-----------------------------------------------------
469  for(sLong iRecord=0; iRecord<Get_Count() && SG_UI_Process_Set_Progress(iRecord, Get_Count()); iRecord++)
470  {
471  CSG_Table_Record *pRecord = Get_Record_byIndex(iRecord);
472 
473  for(int iField=0; iField<Get_Field_Count(); iField++)
474  {
475  switch( Get_Field_Type(iField) )
476  {
477  case SG_DATATYPE_String:
478  case SG_DATATYPE_Date :
479  if( !pRecord->is_NoData(iField) )
480  {
481  Stream.Printf("\"%s\"", pRecord->asString(iField));
482  }
483  else
484  {
485  Stream.Printf("\"\"");
486  }
487  break;
488 
489  default:
490  if( !pRecord->is_NoData(iField) )
491  {
492  Stream.Printf("%s", pRecord->asString(iField));
493  }
494  break;
495  }
496 
497  Stream.Printf("%c", iField < Get_Field_Count() - 1 ? Separator : '\n');
498  }
499  }
500 
501  //-----------------------------------------------------
502  SG_UI_Process_Set_Ready();
503 
504  return( true );
505 }
506 
507 
509 // //
510 // DBase //
511 // //
513 
514 //---------------------------------------------------------
515 bool CSG_Table::_Load_DBase(const CSG_String &FileName)
516 {
517  CSG_Table_DBase dbf(m_Encoding);
518 
519  return( dbf.Open_Read(FileName, this) );
520 }
521 
522 //---------------------------------------------------------
523 bool CSG_Table::_Save_DBase(const CSG_String &FileName)
524 {
525  CSG_Table_DBase dbf(m_Encoding);
526 
527  return( dbf.Open_Write(FileName, this) );
528 }
529 
530 
532 // //
533 // Serialize //
534 // //
536 
537 //---------------------------------------------------------
538 bool CSG_Table::Serialize(CSG_File &Stream, bool bSave)
539 {
540  const SG_Char Separator = SG_T('\t');
541 
542  //-----------------------------------------------------
543  if( bSave )
544  {
545  Stream.Printf("%d %d\n", m_nFields, m_nRecords);
546 
547  for(int iField=0; iField<m_nFields; iField++)
548  {
549  Stream.Printf("%d \"%s\"\n", Get_Field_Type(iField), Get_Field_Name(iField));
550  }
551 
552  for(sLong iRecord=0; iRecord<m_nRecords; iRecord++)
553  {
554  for(int iField=0; iField<m_nFields; iField++)
555  {
556  Stream.Printf("%s%c", Get_Record(iRecord)->asString(iField), iField < m_nFields - 1 ? Separator : '\n');
557  }
558  }
559 
560  return( true );
561  }
562 
563  //-----------------------------------------------------
564  CSG_String sLine; int nFields, FieldType; sLong nRecords;
565 
566  if( Stream.Read_Line(sLine) && SG_SSCANF(sLine, SG_T("%d %lld"), &nFields, &nRecords) == 2 && nFields > 0 )
567  {
568  Destroy();
569 
570  for(int iField=0; iField<nFields; iField++)
571  {
572  if( Stream.Read_Line(sLine) && SG_SSCANF(sLine, SG_T("%d"), &FieldType) == 1 )
573  {
574  Add_Field(sLine.AfterFirst('\"').BeforeFirst('\"'), (TSG_Data_Type)FieldType);
575  }
576  }
577 
578  for(sLong iRecord=0; iRecord<nRecords; iRecord++)
579  {
580  if( Stream.Read_Line(sLine) )
581  {
582  CSG_Table_Record *pRecord = Add_Record();
583 
584  for(int iField=0; iField<m_nFields; iField++)
585  {
586  pRecord->Set_Value(iField, sLine.BeforeFirst(Separator));
587 
588  sLine = sLine.AfterFirst(Separator);
589  }
590  }
591  }
592 
593  return( true );
594  }
595 
596  //-----------------------------------------------------
597  return( false );
598 }
599 
600 
602 // //
603 // //
604 // //
606 
607 //---------------------------------------------------------
CSG_String::BeforeFirst
CSG_String BeforeFirst(char Character) const
Definition: api_string.cpp:666
SG_DATATYPE_Int
@ SG_DATATYPE_Int
Definition: api_core.h:1000
CSG_File::Open
virtual bool Open(const CSG_String &FileName, int Mode=SG_FILE_R, bool bBinary=true, int Encoding=SG_FILE_ENCODING_ANSI)
Definition: api_file.cpp:111
SG_T
#define SG_T(s)
Definition: api_core.h:537
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int Printf(const char *Format,...)
Definition: api_string.cpp:308
CSG_File::Seek_Start
bool Seek_Start(void) const
Definition: api_file.cpp:257
SG_DATATYPE_String
@ SG_DATATYPE_String
Definition: api_core.h:1005
_TL
#define _TL(s)
Definition: api_core.h:1489
CSG_Data_Object::Set_File_Name
void Set_File_Name(const CSG_String &FileName)
Definition: dataobject.cpp:366
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size_t Length(void) const
Definition: api_string.cpp:172
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int Get_Children_Count(void) const
Definition: metadata.h:147
TABLE_FILETYPE_DBase
@ TABLE_FILETYPE_DBase
Definition: table.h:97
CSG_MetaData::Get_Content
const CSG_String & Get_Content(void) const
Definition: metadata.h:132
CSG_String::Mid
CSG_String Mid(size_t first, size_t count=0) const
Definition: api_string.cpp:699
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Definition: table.h:130
SG_UI_MSG_STYLE_SUCCESS
@ SG_UI_MSG_STYLE_SUCCESS
Definition: api_core.h:1505
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virtual CSG_Table_Record * Get_Record(sLong Index) const
Definition: table.h:394
SG_File_Cmp_Extension
SAGA_API_DLL_EXPORT bool SG_File_Cmp_Extension(const CSG_String &FileName, const CSG_String &Extension)
Definition: api_file.cpp:952
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bool Save_MetaData(const CSG_String &FileName)
Definition: dataobject.cpp:677
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virtual bool Destroy(void)
Definition: table.cpp:332
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virtual bool On_Reload(void)
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#define SG_SSCANF
Definition: api_core.h:540
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bool Open_Write(const SG_Char *FileName, class CSG_Table *pTable, bool bRecords_Save=true)
Definition: table_dbase.cpp:307
CSG_Table::Get_Field_Count
int Get_Field_Count(void) const
Definition: table.h:356
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SAGA_API_DLL_EXPORT bool SG_File_Delete(const CSG_String &FileName)
Definition: api_file.cpp:856
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CSG_MetaData * Get_Child(int Index) const
Definition: metadata.h:148
SG_FILE_R
@ SG_FILE_R
Definition: api_core.h:1109
TABLE_FILETYPE_Undefined
@ TABLE_FILETYPE_Undefined
Definition: table.h:94
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virtual bool On_Delete(void)
Definition: table_io.cpp:70
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void Set_Update_Flag(bool bOn=true)
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virtual void Set_Modified(bool bModified=true)
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@ SG_UI_MSG_STYLE_FAILURE
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SAGA_API_DLL_EXPORT CSG_String SG_File_Get_Name(const CSG_String &full_Path, bool bExtension)
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Definition: table_dbase.h:91
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Definition: table_record.cpp:461
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const SG_Char * Get_Field_Name(int iField) const
Definition: table.h:357
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std::string to_StdString(void) const
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SG_FILE_ENCODING_UNDEFINED
@ SG_FILE_ENCODING_UNDEFINED
Definition: api_core.h:557
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bool Set_File_Encoding(int Encoding)
Definition: table_io.cpp:81
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bool Serialize(CSG_File &Stream, bool bSave)
Definition: table_io.cpp:538
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signed long long sLong
Definition: api_core.h:158
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sLong Get_Count(void) const
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Definition: dataobject.h:275
TABLE_FILETYPE_Text_NoHeadLine
@ TABLE_FILETYPE_Text_NoHeadLine
Definition: table.h:96
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const SG_Char * Get_File_Name(bool bNative=true) const
Definition: dataobject.cpp:390
SG_FILE_W
@ SG_FILE_W
Definition: api_core.h:1110
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CSG_Table_Record * Get_Record_byIndex(sLong Index) const
Definition: table.h:399
SG_DATATYPE_Date
@ SG_DATATYPE_Date
Definition: api_core.h:1006
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Definition: dataobject.cpp:300
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int m_Encoding
Definition: table.h:449
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static CSG_String Format(const char *Format,...)
Definition: api_string.cpp:270
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int Find(char Character, bool fromEnd=false) const
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Definition: table.cpp:611
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virtual bool Add_Field(const CSG_String &Name, TSG_Data_Type Type, int Position=-1)
Definition: table.cpp:481
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