116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
/*
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The program is based on:
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https://groups.google.com/forum/#!topic/lastools/kfYP00fzYtI
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It extracts the NGS points to XYZ text file.
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http://shapelib.maptools.org/dbf_api.html
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basic funtionality taken from dbfdump.c
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path to libshp.dll has to be added as a PATH var
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <iostream>
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#include <fstream>
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using namespace std;
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#include "shapefil.h"
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int main(int argc, char const *argv[])
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{
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string dbf_filename;
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string txt_filename;
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if (argc == 1)
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{
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// no arguments given, print help
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cout << "No input and output files defined!" << endl;
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cout << "example: shp_2_txt -i MA.dbf" << endl;
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cout << "It will output a text file with the same name" << endl;
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cout << "and inside the dbf file folder." << endl;
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return 0;
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}
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// parse arguments
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for (int i = 1; i < argc; i++)
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{
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if (argv[i][0] == '\0')
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{
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continue;
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}
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else if (strcmp(argv[i],"-i") == 0)
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{
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dbf_filename = argv[i + 1];
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}
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// else if (strcmp(argv[i],"-o") == 0 )
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// {
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// txt_filename = argv[i + 1];
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// }
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}
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DBFHandle dbfh;
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int i, iRecord;
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char szTitle[12];
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int nWidth, nDecimals;
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if (dbf_filename.find("dbf"))
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{
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txt_filename = dbf_filename.substr(0, dbf_filename.find("dbf")) + "txt";
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}
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else
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{
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return 0;
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}
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cout << endl << "A Simple program to extract NGS points from dbf files." << endl;
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cout << endl << "Extracting info from " << dbf_filename << " to " << txt_filename << endl;
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// open textfile and dbf handle
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ofstream txt_file(txt_filename);
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dbfh = DBFOpen(dbf_filename.c_str(), "rb");
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// check
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if (dbfh <= 0)
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{
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throw string("File " + dbf_filename + " not found");
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}
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else
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{
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// loop over dbf records
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for( iRecord = 0; iRecord < DBFGetRecordCount(dbfh); iRecord++ )
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{
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// loop over fields of record
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for( i = 0; i < DBFGetFieldCount(dbfh); i++ )
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{
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// get field information
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DBFFieldType eType;
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eType = DBFGetFieldInfo( dbfh, i, szTitle, &nWidth, &nDecimals );
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// parser values
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string dec_lat = "DEC_LAT";
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string dec_lon = "DEC_LON";
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string ellip_h = "ELLIP_HT";
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string ortho_h = "ORTHO_HT";
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// char to string for matching
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string str(szTitle);
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// parse for lat, lon in degrees and orhto height
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if (szTitle == dec_lat or szTitle == dec_lon or szTitle == ortho_h)
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{
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txt_file << DBFReadStringAttribute( dbfh, iRecord, i );
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txt_file << " ";
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}
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}
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txt_file << endl;
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}
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// close dbf handle and textfile
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DBFClose( dbfh );
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txt_file.close();
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cout << "Done." << endl;
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}
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return 0;
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} |