mirror of https://github.com/ecmwf/eccodes.git
133 lines
7.4 KiB
Modula-2
133 lines
7.4 KiB
Modula-2
# (C) Copyright 2005- ECMWF.
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constant defaultSequence=0;
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constant tablesMasterDir="bufr/tables/[masterTableNumber]/wmo/[masterTablesVersionNumber]" : hidden;
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if (masterTablesVersionNumber == 19) {
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# See SUP-2302: We need this exception for EUMETSAT local tables, because there are conflicting elements in their table version 1 when
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# used in combination with different WMO tables versions. This is associated with the way BUFRDC manages the tables that
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# are files with masterTablesVersionNumber and localTablesVersionNumber in the name.
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# ecCodes doesn't associate a local version number with a particular master table version number.
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# EUMETSAT use a combination of masterTablesVersionNumber and localTablesVersionNumber
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# to version the tables. This is a problem because they reuse codes in the different versions.
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# They can have version 19-1 ( masterTablesVersionNumber=19, localTablesVersionNumber=1) and also 25-1 and
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# in the two tables they may reuse an element changing width, reference, scale and meaning.
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# The correct way of doing this would be to have two different tables localTablesVersionNumber=1 and localTablesVersionNumber=2
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# with a different use of their own descriptors. Local tables should be managed by the owner with different version numbers.
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# They rely on the fact that the two versions of the tables are used in combination with different master tables.
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# This is not always true.
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# Hence this 'if' statement to solve the conflict of tables.
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constant tablesLocalDir="bufr/tables/[masterTableNumber]/local/[masterTablesVersionNumber]-[localTablesVersionNumber]/[bufrHeaderCentre:l]/[bufrHeaderSubCentre]" : hidden;
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} else {
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constant tablesLocalDir="bufr/tables/[masterTableNumber]/local/[localTablesVersionNumber]/[bufrHeaderCentre:l]/[bufrHeaderSubCentre]" : hidden;
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}
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constant rootTablesDir="bufr/tables" : hidden;
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#meta clearTables bufr_clear_tables() = 0 : hidden,no_copy;
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#when (changed(tablesMasterDir)) { set clearTables=1;}
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#when (changed(tablesLocalDir)) { set clearTables=1;}
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# we should implement some table version dependency
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#constant templatesMasterDir="bufr/templates/[masterTableNumber]/[masterTablesVersionNumber]";
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#constant templatesLocalDir="bufr/templates/local/[masterTableNumber]/[bufrHeaderCentre:l]/[localTablesVersionNumber]";
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constant templatesMasterDir="bufr/templates";
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constant templatesLocalDir="bufr/templates/local";
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transient tableNumber=0;
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#codetable[4] codeTablesMaster '[tablesMasterDir]/codetables/[tableNumber].table' : string_type,transient;
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#codetable[4] codeTablesLocal '[tablesLocalDir]/codetables/[tableNumber].table' : string_type,transient;
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hash_array sequences (defaultSequence,"sequence.def",tablesMasterDir,tablesLocalDir): long_type,no_copy;
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#smart_table codeFlags ("codeFlag.def",tablesMasterDir,tablesLocalDir,...);
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position offsetSection3;
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section_length[3] section3Length = 9 ;
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unsigned[1] reservedSection3 = 0;
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unsigned[2] numberOfSubsets : dump;
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alias ls.numberOfSubsets=numberOfSubsets;
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if (section2Present && bufrHeaderCentre == 98 && section2Length == 52) {
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if ( rdbType == 2 || rdbType == 3 || rdbType == 8 || rdbType == 12 || rdbType == 30 ) {
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transient isSatelliteType=1;
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} else {
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transient isSatelliteType=0;
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}
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if (isSatelliteType || numberOfSubsets>1) {
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constant isSatellite=1;
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} else {
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constant isSatellite=0;
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}
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alias rdb.isSatellite=isSatellite;
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if (isSatellite) {
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meta localLongitude1 bits(keyData,40,26,-18000000,100000) : dump,no_copy;
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meta localLatitude1 bits(keyData,72,25,-9000000,100000) : dump,no_copy;
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meta localLongitude2 bits(keyMore,0,26,-18000000,100000) : dump,no_copy;
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meta localLatitude2 bits(keyMore,32,25,-9000000,100000) : dump,no_copy;
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# This rule is taken from BUFRDC. See bufrdc_wmo/buukey.F
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# See ECC-686
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# and https://confluence.ecmwf.int/pages/viewpage.action?pageId=24316441
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if (oldSubtype == 255 || numberOfSubsets > 255 ||
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( oldSubtype >= 121 && oldSubtype <= 130 ) ||
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oldSubtype == 31) {
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meta ls.localNumberOfObservations bits(keySat,0,16) : dump,long_type,no_copy;
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meta ls.satelliteID bits(keySat,16,16) : dump,long_type,no_copy;
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} else {
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meta ls.localNumberOfObservations bits(keySat,0,8) : dump,long_type,no_copy;
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meta ls.satelliteID bits(keySat,8,16) : dump,long_type,no_copy;
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}
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} else {
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meta ls.localLatitude bits(keyData,72,25,-9000000,100000) : dump,no_copy;
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meta ls.localLongitude bits(keyData,40,26,-18000000,100000) : dump,no_copy;
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meta ident trim(keyMore,1,1): dump, no_copy; # remove whitespaces left and right
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alias mars.ident = ident : string_type, no_copy;
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}
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}
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flags[1] section3Flags 'bufr/section3_flags.table';
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flagbit observedData(section3Flags,7) : dump,no_copy;
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flagbit compressedData(section3Flags,6) : dump,no_copy;
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position offsetDescriptors;
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transient createNewData=1;
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meta numberOfUnexpandedDescriptors evaluate( (section3Length - 7) / 2 ) : no_copy;
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meta unexpandedDescriptorsEncoded raw(totalLength,section3Length,7) : hidden;
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meta unexpandedDescriptors unexpanded_descriptors(unexpandedDescriptorsEncoded,createNewData) :dump,no_copy;
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concept bufrTemplate (unknown,"BufrTemplate.def",templatesMasterDir,templatesLocalDir) : no_copy;
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alias BufrTemplate=bufrTemplate;
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meta elementsTable bufr_elements_table("element.table",tablesMasterDir,tablesLocalDir) : hidden,no_copy;
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meta expandedCodes expanded_descriptors(elementsTable,expandedCodes,0,unexpandedDescriptors,sequences) : no_copy;
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alias expandedDescriptors=expandedCodes;
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#meta expandedReferences expanded_descriptors(elemetsTable,expandedCodes,2);
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#meta expandedWidths expanded_descriptors(elemetsTable,expandedCodes,3);
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#meta expandedType expanded_descriptors(elemetsTable,expandedCodes,4);
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meta bufrdcExpandedDescriptors bufrdc_expanded_descriptors(expandedCodes) : no_copy;
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#smart_table NAME (VALUES,FILE_NAME,MASTER_DIRECTORY,LOCAL_DIRECTORY,WIDTH_OF_CODE_IN_BITS,EXTRA_DIRECTORY,EXTRA_FILE_NAME);
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#Note: The WIDTH_OF_CODE_IN_BITS has to be big enough so 2^width > the highest BUFR descriptor code
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smart_table expandedOriginalCodes (expandedCodes,"element.table",tablesMasterDir,tablesLocalDir,18,rootTablesDir,"operators.table") :no_copy;
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meta expandedAbbreviations smart_table_column(expandedOriginalCodes,0,1) : string_type,no_copy;
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meta expandedTypes smart_table_column(expandedOriginalCodes,1,0) : string_type,no_copy;
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meta expandedNames smart_table_column(expandedOriginalCodes,2,0) : string_type,no_copy;
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meta expandedUnits smart_table_column(expandedOriginalCodes,3,0) : string_type,no_copy;
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meta expandedOriginalScales smart_table_column(expandedOriginalCodes,4,0) : long_type,no_copy;
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meta expandedOriginalReferences smart_table_column(expandedOriginalCodes,5,0) : long_type,no_copy;
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meta expandedOriginalWidths smart_table_column(expandedOriginalCodes,6,0) : long_type,no_copy;
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meta expandedCrex_units smart_table_column(expandedOriginalCodes,7,0) : long_type,no_copy;
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meta expandedCrex_scales smart_table_column(expandedOriginalCodes,8,0) : long_type,no_copy;
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meta expandedCrex_widths smart_table_column(expandedOriginalCodes,9,0) : long_type,no_copy;
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position endDescriptors;
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section_padding section3Padding;
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meta lengthDescriptors evaluate(endDescriptors-offsetDescriptors);
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meta md5Structure md5(offsetDescriptors,lengthDescriptors);
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