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| version 1.172.2.14.2.29, 2003/04/11 11:47:39 | version 1.202, 2004/05/26 08:21:56 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b table parser class. | Parser: @b table parser class. |
| Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| static const char* IDENT_TABLE_C="$Date$"; | static const char * const IDENT_TABLE_C="$Date$"; |
| #include "classes.h" | #include "classes.h" |
| #include "pa_vmethod_frame.h" | #include "pa_vmethod_frame.h" |
| Line 21 static const char* IDENT_TABLE_C="$Date$ | Line 21 static const char* IDENT_TABLE_C="$Date$ |
| class MTable: public Methoded { | class MTable: public Methoded { |
| public: // VStateless_class | public: // VStateless_class |
| Value* create_new_value() { return new VTable(); } | Value* create_new_value(Pool&) { return new VTable(); } |
| public: | public: |
| MTable(); | MTable(); |
| Line 40 DECLARE_CLASS_VAR(table, new MTable, 0); | Line 40 DECLARE_CLASS_VAR(table, new MTable, 0); |
| #define SQL_OFFSET_NAME "offset" | #define SQL_OFFSET_NAME "offset" |
| #define SQL_DEFAULT_NAME "default" | #define SQL_DEFAULT_NAME "default" |
| #define SQL_DISTINCT_NAME "distinct" | #define SQL_DISTINCT_NAME "distinct" |
| #define TABLE_REVERSE_NAME "reverse" | |
| // globals | // globals |
| Line 47 String sql_limit_name(SQL_LIMIT_NAME); | Line 48 String sql_limit_name(SQL_LIMIT_NAME); |
| String sql_offset_name(SQL_OFFSET_NAME); | String sql_offset_name(SQL_OFFSET_NAME); |
| String sql_default_name(SQL_DEFAULT_NAME); | String sql_default_name(SQL_DEFAULT_NAME); |
| String sql_distinct_name(SQL_DISTINCT_NAME); | String sql_distinct_name(SQL_DISTINCT_NAME); |
| String table_reverse_name(TABLE_REVERSE_NAME); | |
| // methods | // local defines |
| static void get_copy_options(Request& r, MethodParams& params, size_t param_index, | #define COLUMN_SEPARATOR_NAME "separator" |
| const Table& source, | #define COLUMN_ENCLOSER_NAME "encloser" |
| int& offset, | |
| int& limit) { | |
| offset=0; | |
| limit=0; | |
| if(params.count()<=param_index) | |
| return; | |
| Value& voptions=params.as_no_junction(param_index, "options must be hash, not code"); | |
| if(!voptions.is_string()) { | // methods |
| if(HashStringValue* options=voptions.get_hash()) { | |
| int valid_options=0; | static Table::Action_options get_action_options(Request& r, MethodParams& params, |
| if(Value* voffset=options->get(sql_offset_name)) { | const Table& source) { |
| valid_options++; | Table::Action_options result; |
| if(voffset->is_string()) { | if(!params.count()) |
| const String& soffset=*voffset->get_string(); | return result; |
| if(soffset == "cur") | |
| offset=source.current(); | Value& maybe_options=params.last(); |
| else | /* can not do it: |
| throw Exception("parser.runtime", | want to enable ^table::create[$source; |
| &soffset, | # $.option[] |
| "must be 'cur' string or expression"); | ] |
| } else | but there is ^table.locate[name;value] |
| offset=r.process_to_value(*voffset).as_int(); | |
| } | if(maybe_options.is_string()) { // allow empty options |
| if(Value* vlimit=options->get(sql_limit_name)) { | result.defined=true; |
| valid_options++; | return result; |
| limit=r.process_to_value(*vlimit).as_int(); | } |
| if(!limit) // zero limit = should be 'nothing to copy', for methods zero means 'all' | */ |
| limit=-1; // thus fixing | HashStringValue* options=maybe_options.get_hash(); |
| } | if(!options) |
| if(valid_options!=options->count()) | return result; |
| result.defined=true; | |
| bool defined_offset=false; | |
| int valid_options=0; | |
| if(Value* voffset=options->get(sql_offset_name)) { | |
| valid_options++; | |
| defined_offset=true; | |
| if(voffset->is_string()) { | |
| const String& soffset=*voffset->get_string(); | |
| if(soffset == "cur") | |
| result.offset=source.current(); | |
| else | |
| throw Exception("parser.runtime", | throw Exception("parser.runtime", |
| 0, | &soffset, |
| "called with invalid option"); | "must be 'cur' string or expression"); |
| } else | } else |
| throw Exception("parser.runtime", | result.offset=r.process_to_value(*voffset).as_int(); |
| 0, | |
| "options must be hash"); | |
| } | } |
| if(Value* vlimit=options->get(sql_limit_name)) { | |
| valid_options++; | |
| result.limit=r.process_to_value(*vlimit).as_int(); | |
| } | |
| if(Value *vreverse=(Value *)options->get(table_reverse_name)) { | |
| valid_options++; | |
| result.reverse=r.process_to_value(*vreverse).as_bool(); | |
| if(result.reverse && !defined_offset) | |
| result.offset=source.count()-1; | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "called with invalid option"); | |
| return result; | |
| } | |
| static void check_option_param(bool options_defined, | |
| MethodParams& params, size_t next_param_index, | |
| const char *msg) { | |
| if(next_param_index+(options_defined?1:0) != params.count()) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "%s", msg); | |
| } | } |
| static void _create(Request& r, MethodParams& params) { | static void _create(Request& r, MethodParams& params) { |
| // clone/copy part? | // clone/copy part? |
| if(Table *source=params[0].get_table()) { | if(Table *source=params[0].get_table()) { |
| int offset, limit; | Table::Action_options o=get_action_options(r, params, *source); |
| get_copy_options(r, params, 1, *source, | check_option_param(o.defined, params, 1, |
| offset, limit); | "too many parameters"); |
| GET_SELF(r, VTable).set_table(*new Table(*source, offset, limit)); | GET_SELF(r, VTable).set_table(*new Table(*source, o)); |
| return; | return; |
| } | } |
| Line 147 static void _create(Request& r, MethodPa | Line 178 static void _create(Request& r, MethodPa |
| GET_SELF(r, VTable).set_table(table); | GET_SELF(r, VTable).set_table(table); |
| } | } |
| struct lsplit_result { | |
| char* piece; | |
| char delim; | |
| operator bool() { return piece!=0; } | |
| }; | |
| inline lsplit_result lsplit(char* string, char delim1, char delim2) { | |
| lsplit_result result; | |
| if(string) { | |
| char delims[]={delim1, delim2, 0}; | |
| if(char* v=strpbrk(string, delims)) { | |
| result.delim=*v; | |
| *v=0; | |
| result.piece=v+1; | |
| return result; | |
| } | |
| } | |
| result.piece=0; | |
| result.delim=0; | |
| return result; | |
| } | |
| inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) { | |
| lsplit_result result; | |
| result.piece=*string_ref; | |
| lsplit_result next=lsplit(*string_ref, delim1, delim2); | |
| result.delim=next.delim; | |
| *string_ref=next.piece; | |
| return result; | |
| } | |
| static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) { | |
| lsplit_result result; | |
| if(char* string=*string_ref) { | |
| if(encloser && *string==encloser) { | |
| string++; | |
| char *read; | |
| char *write; | |
| write=read=string; | |
| char c; | |
| while((c=*read++)) { | |
| if(c==encloser) { | |
| char n=*read; | |
| if(n==encloser) // double-encloser stands for encloser | |
| read++; | |
| else if(n==delim1 || n==delim2) { | |
| result.delim=n; | |
| read++; | |
| break; | |
| } | |
| } | |
| *write++=c; | |
| } | |
| *write=0; // terminate | |
| *string_ref=c? read: 0; | |
| result.piece=string; | |
| return result; | |
| } else | |
| return lsplit(string_ref, delim1, delim2); | |
| } | |
| result.piece=0; | |
| return result; | |
| } | |
| static void skip_empty_and_comment_lines( char** data_ref ) { | |
| if(char *data=*data_ref) { | |
| while( char c=*data ) { | |
| if( c== '\n' || c == '#' ) { | |
| /*nowhere=*/getrow(&data); // remove empty&comment lines | |
| if(!(*data_ref=data)) | |
| break; | |
| continue; | |
| } | |
| break; | |
| } | |
| } | |
| } | |
| struct TableSeparators { | |
| char column; | |
| char encloser; | |
| const String* sencloser; | |
| TableSeparators() { | |
| column='\t'; | |
| encloser=0; | |
| } | |
| void load( HashStringValue& options ) { | |
| if(Value* vseparator=options.get(COLUMN_SEPARATOR_NAME)) { | |
| options.remove(COLUMN_SEPARATOR_NAME); | |
| const String& sseparator=vseparator->as_string(); | |
| if(sseparator.length()!=1) | |
| throw Exception("parser.runtime", | |
| &sseparator, | |
| "separator must be one character long"); | |
| column=sseparator.first_char(); | |
| } | |
| if(Value* vencloser=options.get(COLUMN_ENCLOSER_NAME)) { | |
| options.remove(COLUMN_ENCLOSER_NAME); | |
| sencloser=&vencloser->as_string(); | |
| if(sencloser->length()!=1) | |
| throw Exception("parser.runtime", | |
| sencloser, | |
| "encloser must be one character long"); | |
| encloser=sencloser->first_char(); | |
| } | |
| } | |
| }; | |
| static void _load(Request& r, MethodParams& params) { | static void _load(Request& r, MethodParams& params) { |
| const String& first_param=params.as_string(0, "file name must be string"); | const String& first_param=params.as_string(0, "file name must be string"); |
| int filename_param_index=0; | int filename_param_index=0; |
| Line 154 static void _load(Request& r, MethodPara | Line 298 static void _load(Request& r, MethodPara |
| if(nameless) | if(nameless) |
| filename_param_index++; | filename_param_index++; |
| size_t options_param_index=filename_param_index+1; | size_t options_param_index=filename_param_index+1; |
| HashStringValue *options=0; | |
| TableSeparators separators; | |
| if(options_param_index<params.count() | |
| && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) { | |
| // cloning, so that we could change [to simplify checks on params inside file_read_text | |
| options=new HashStringValue(*options); | |
| separators.load(*options); | |
| } | |
| // loading text | // loading text |
| char *data=file_read_text(r.charsets, | char *data=file_read_text(r.charsets, |
| r.absolute(params.as_string(filename_param_index, "file name must be string")), | r.absolute(params.as_string(filename_param_index, "file name must be string")), |
| true, | true, |
| options_param_index<params.count()?params.as_no_junction(options_param_index, "additional params must be hash").get_hash():0 | options |
| ); | ); |
| // parse columns | // parse columns |
| Line 169 static void _load(Request& r, MethodPara | Line 322 static void _load(Request& r, MethodPara |
| } else { | } else { |
| columns=Table::columns_type(new ArrayString); | columns=Table::columns_type(new ArrayString); |
| while(char *row_chars=getrow(&data)) { | skip_empty_and_comment_lines(&data); |
| // remove empty&comment lines | while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) { |
| if(!*row_chars || *row_chars == '#') | *columns+=new String(sr.piece, 0, true); |
| continue; | if(sr.delim=='\n') |
| do { | break; |
| *columns+=new String(lsplit(&row_chars, '\t'), 0, true); | |
| } while(row_chars); | |
| break; | |
| } | } |
| } | } |
| Table& table=*new Table(columns); | |
| // parse cells | // parse cells |
| Table& table=*new Table(columns); | Table::element_type row(new ArrayString); |
| char *row_chars; | skip_empty_and_comment_lines(&data); |
| while(row_chars=getrow(&data)) { | while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) { |
| // remove empty&comment lines | if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n] |
| if(!*row_chars || *row_chars == '#') | break; |
| continue; | *row+=new String(sr.piece, 0, true); |
| Table::element_type row(new ArrayString); | if(sr.delim=='\n') { |
| while(char *cell_chars=lsplit(&row_chars, '\t')) { | table+=row; |
| *row+=new String(cell_chars, 0, true); | row=new ArrayString; |
| skip_empty_and_comment_lines(&data); | |
| } | } |
| } | |
| // last line [if without \n] | |
| if(row->count()) | |
| table+=row; | table+=row; |
| }; | |
| // replace any previous table value | // replace any previous table value |
| GET_SELF(r, VTable).set_table(table); | GET_SELF(r, VTable).set_table(table); |
| } | } |
| /// @todo "x\nx" "xxx""xx" | static void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) { |
| if(encloser) { | |
| to<<*sencloser; | |
| // while we have 'encloser'... | |
| size_t pos_after=0; | |
| for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before+1) { | |
| to<<from.mid(pos_before+1/*+found encloser*/, pos_after-pos_before); | |
| to<<*sencloser; // doubling encloser | |
| } | |
| // last piece | |
| size_t from_length=from.length(); | |
| if(pos_after<from_length) | |
| to<<from.mid(pos_after, from_length); | |
| to<<*sencloser; | |
| } else | |
| to<<from; | |
| } | |
| static void _save(Request& r, MethodParams& params) { | static void _save(Request& r, MethodParams& params) { |
| Value& vfile_name=params.as_no_junction(params.count()-1, "file name must not be code"); | const String& first_arg=params.as_string(0, "first argument must not be code"); |
| size_t param_index=1; | |
| bool do_append=false; | |
| bool output_column_names=true; | |
| // mode? | |
| if(first_arg=="append") | |
| do_append=true; | |
| else if(first_arg=="nameless") | |
| output_column_names=false; | |
| else | |
| --param_index; | |
| const String& file_name=params.as_string(param_index++, "file name must not be code"); | |
| TableSeparators separators; | |
| if(param_index<params.count()) { | |
| if(HashStringValue *options=params.as_no_junction(param_index++, "additional params must be hash").get_hash()) { | |
| separators.load(*options); | |
| if(options->count()) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "invalid option passed"); | |
| } else | |
| throw Exception("parser.runtime", | |
| 0, | |
| "additional params must be hash (did you spell mode parameter correctly?)"); | |
| } | |
| if(param_index<params.count()) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "bad mode (must be nameless or append)"); | |
| Table& table=GET_SELF(r, VTable).table(); | Table& table=GET_SELF(r, VTable).table(); |
| bool do_append=false; | |
| String sdata; | String sdata; |
| if(params.count()==1) { // named output | if(output_column_names) { |
| // write out names line | |
| if(table.columns()) { // named table | if(table.columns()) { // named table |
| for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) { | for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) { |
| sdata.append(*i.next(), String::L_TABLE); | maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser ); |
| if(i.has_next()) | if(i.has_next()) |
| sdata.append_know_length("\t", 1, String::L_CLEAN); | sdata.append_know_length("\t", 1, String::L_CLEAN); |
| } | } |
| } else { // nameless table | } else { // nameless table [we were asked to output column names] |
| if(int lsize=table.count()?table[0]->count():0) | if(int lsize=table.count()?table[0]->count():0) |
| for(int column=0; column<lsize; column++) { | for(int column=0; column<lsize; column++) { |
| char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER]; | char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER]; |
| sdata.append_know_length(cindex_tab, | sdata.append_know_length(cindex_tab, |
| snprintf(cindex_tab, MAX_NUMBER, "%d\t", column), | snprintf(cindex_tab, MAX_NUMBER, |
| String::L_CLEAN); | column<lsize-1?"%d\t":"%d", column), |
| String::L_CLEAN); | |
| } | } |
| else | else |
| sdata.append_help_length("empty nameless table", 0, String::L_CLEAN); | sdata.append_help_length("empty nameless table", 0, String::L_CLEAN); |
| } | } |
| sdata.append_know_length("\n", 1, String::L_CLEAN); | sdata.append_know_length("\n", 1, String::L_CLEAN); |
| } else { // mode specified | |
| const String& mode=params.as_string(0, "mode must be string"); | |
| if(mode=="append") | |
| do_append=true; | |
| else if(mode=="nameless") | |
| /*ok, already skipped names output*/; | |
| else | |
| throw Exception("parser.runtime", | |
| &mode, | |
| "unknown mode, must be 'append'"); | |
| } | } |
| // data lines | // data lines |
| Array_iterator<ArrayString*> i(table); | Array_iterator<ArrayString*> i(table); |
| while(i.has_next()) { | while(i.has_next()) { |
| for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) { | for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) { |
| sdata.append(*c.next(), String::L_TABLE); | maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser ); |
| if(c.has_next()) | if(c.has_next()) |
| sdata.append_know_length("\t", 1, String::L_CLEAN); | sdata.append_know_length("\t", 1, String::L_CLEAN); |
| } | } |
| Line 251 static void _save(Request& r, MethodPara | Line 446 static void _save(Request& r, MethodPara |
| } | } |
| // write | // write |
| file_write(r.absolute(vfile_name.as_string()), | file_write(r.absolute(file_name), |
| sdata.cstr(), sdata.length(), true, do_append); | sdata.cstr(), sdata.length(), true, do_append); |
| } | } |
| Line 364 static void table_row_to_hash(Table::ele | Line 559 static void table_row_to_hash(Table::ele |
| table=vtable->get_table(); | table=vtable->get_table(); |
| else { | else { |
| // no? creating table of same structure as source | // no? creating table of same structure as source |
| table=new Table(*info->table, 0, -1 /*no rows, just structure*/); | Table::Action_options table_options(0, 0); |
| table=new Table(*info->table, table_options/*no rows, just structure*/); | |
| info->hash->put(*key, new VTable(table)); | info->hash->put(*key, new VTable(table)); |
| } | } |
| *table+=row; | *table+=row; |
| Line 434 static void _hash(Request& r, MethodPara | Line 630 static void _hash(Request& r, MethodPara |
| } else | } else |
| throw Exception("parser.runtime", | throw Exception("parser.runtime", |
| 0, | 0, |
| "value field(s) must be string or self_table" | "value field(s) must be string or table" |
| ); | ); |
| } else { // by all columns, including key | } else { // by all columns, including key |
| if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST)) | if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST)) |
| Line 444 static void _hash(Request& r, MethodPara | Line 640 static void _hash(Request& r, MethodPara |
| { | { |
| Row_info info; | |
| info.r=&r; | |
| info.table=&self_table; | |
| Value* key_param=¶ms[0]; | Value* key_param=¶ms[0]; |
| info.key_code=key_param->get_junction()?key_param:0; | Row_info info={ |
| info.key_field=info.key_code?-1 | &r, |
| :self_table.column_name2index(key_param->as_string(), true); | &self_table, |
| info.value_fields=&value_fields; | /*key_code=*/key_param->get_junction()?key_param:0, |
| info.hash=&result.hash(); | /*key_field=*/0/*filled below*/, |
| info.distinct=distinct; | &value_fields, |
| info.row=0; | &result.hash(), |
| distinct, | |
| /*row=*/0 | |
| }; | |
| info.key_field=(info.key_code?-1 | |
| :self_table.column_name2index(key_param->as_string(), true)); | |
| int saved_current=self_table.current(); | int saved_current=self_table.current(); |
| self_table.for_each(table_row_to_hash, &info); | self_table.for_each(table_row_to_hash, &info); |
| Line 532 static void _sort(Request& r, MethodPara | Line 730 static void _sort(Request& r, MethodPara |
| GET_SELF(r, VTable).set_table(new_table); | GET_SELF(r, VTable).set_table(new_table); |
| } | } |
| static bool _locate_expression(Request& r, MethodParams& params) { | #ifndef DOXYGEN |
| if(params.count()>1) | struct Expression_is_true_info { |
| throw Exception("parser.runtime", | Request* r; |
| 0, | Value* expression_code; |
| "locate by expression has only one parameter - expression"); | }; |
| #endif | |
| static bool expression_is_true(Table&, Expression_is_true_info* info) { | |
| return info->r->process_to_value(*info->expression_code).as_bool(); | |
| } | |
| static bool _locate_expression(Table& table, Table::Action_options o, | |
| Request& r, MethodParams& params) { | |
| check_option_param(o.defined, params, 1, | |
| "locate by expression only has parameters: expression and, maybe, options"); | |
| Value& expression_code=params.as_junction(0, "must be expression"); | Value& expression_code=params.as_junction(0, "must be expression"); |
| Table& table=GET_SELF(r, VTable).table(); | Expression_is_true_info info={&r, &expression_code}; |
| int saved_current=table.current(); | return table.table_first_that(expression_is_true, &info, o); |
| int size=table.count(); | |
| for(int row=0; row<size; row++) { | |
| table.set_current(row); | |
| if(r.process_to_value(expression_code).as_bool()) | |
| return true; | |
| } | |
| table.set_current(saved_current); | |
| return false; | |
| } | } |
| static bool _locate_name_value(Request& r, MethodParams& params) { | static bool _locate_name_value(Table& table, Table::Action_options o, |
| if(params.count()>2) | Request&, MethodParams& params) { |
| throw Exception("parser.runtime", | check_option_param(o.defined, params, 2, |
| 0, | "locate by locate by name has parameters: name, value and, maybe, options"); |
| "locate by name and value has only two parameters - name and value"); | const String& name=params.as_string(0, "column name must be string"); |
| const String& value=params.as_string(1, "value must be string"); | |
| Table& table=GET_SELF(r, VTable).table(); | return table.locate(name, value, o); |
| return table.locate( | |
| params.as_string(0, "column name must be string"), | |
| params.as_string(1, "value must be string") | |
| ); | |
| } | } |
| static void _locate(Request& r, MethodParams& params) { | static void _locate(Request& r, MethodParams& params) { |
| Table& table=GET_SELF(r, VTable).table(); | |
| Table::Action_options o=get_action_options(r, params, table); | |
| bool result=params[0].get_junction()? | bool result=params[0].get_junction()? |
| _locate_expression(r, params) : | _locate_expression(table, o, r, params) : |
| _locate_name_value(r, params); | _locate_name_value(table, o, r, params); |
| r.write_no_lang(*new VBool(result)); | r.write_no_lang(*new VBool(result)); |
| } | } |
| static void _flip(Request& r, MethodParams& params) { | |
| static void _flip(Request& r, MethodParams&) { | |
| Table& old_table=GET_SELF(r, VTable).table(); | Table& old_table=GET_SELF(r, VTable).table(); |
| Table& new_table=*new Table(old_table.columns()); | Table& new_table=*new Table(0); |
| if(size_t old_count=old_table.count()) | if(size_t old_count=old_table.count()) |
| if(size_t old_cols=old_table[0]->count()) | if(size_t old_cols=old_table[0]->count()) |
| for(size_t column=0; column<old_cols; column++) { | for(size_t column=0; column<old_cols; column++) { |
| Line 601 static void _append(Request& r, MethodPa | Line 798 static void _append(Request& r, MethodPa |
| GET_SELF(r, VTable).table()+=row; | GET_SELF(r, VTable).table()+=row; |
| } | } |
| static void join_named_row(Table& src, Table* dest) { | |
| Table::columns_type dest_columns=dest->columns(); | |
| size_t dest_columns_count=dest_columns->count(); | |
| Table::element_type dest_row(new ArrayString(dest_columns_count)); | |
| for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) { | |
| const String* src_item=src.item(*dest_columns->get(dest_column)); | |
| *dest_row+=src_item?src_item:new String; | |
| } | |
| *dest+=dest_row; | |
| } | |
| static void join_nameless_row(Table& src, Table* dest) { | |
| *dest+=src[src.current()]; | |
| } | |
| static void _join(Request& r, MethodParams& params) { | static void _join(Request& r, MethodParams& params) { |
| Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table(); | Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table(); |
| if(!maybe_src) | if(!maybe_src) |
| throw Exception("parser.runtime", | throw Exception("parser.runtime", |
| 0, | 0, |
| "source is not a table"); | "source is not a table"); |
| Table& src=*maybe_src; | Table& src=*maybe_src; |
| Table::Action_options o=get_action_options(r, params, src); | |
| check_option_param(o.defined, params, 1, | |
| "invalid extra parameter"); | |
| Table& dest=GET_SELF(r, VTable).table(); | Table& dest=GET_SELF(r, VTable).table(); |
| if(&src == &dest) | if(&src == &dest) |
| throw Exception("parser.runtime", | throw Exception("parser.runtime", |
| 0, | 0, |
| "source and destination are same table"); | "source and destination are same table"); |
| int offset, limit; | if(dest.columns()) // dest is named |
| get_copy_options(r, params, 1, src, | src.table_for_each(join_named_row, &dest, o); |
| offset, limit); | else // dest is nameless |
| src.table_for_each(join_nameless_row, &dest, o); | |
| if(Table::columns_type dest_columns=dest.columns()) { // dest is named | |
| int saved_src_current=src.current(); | |
| int m=src.count()-offset; | |
| if(!limit || limit>m) | |
| limit=m; | |
| int end=offset+limit; | |
| for(int src_row=offset; src_row<end; src_row++) { | |
| src.set_current(src_row); | |
| Table::element_type dest_row(new ArrayString(src.count())); | |
| for(size_t dest_column=0; dest_column<dest_columns->count(); dest_column++) { | |
| const String* src_item=src.item(*dest_columns->get(dest_column)); | |
| *dest_row+=src_item?src_item:new String; | |
| } | |
| dest+=dest_row; | |
| } | |
| src.set_current(saved_src_current); | |
| } else { // dest is nameless | |
| size_t src_count=src.count(); | |
| for(size_t src_row=0; src_row<src_count; src_row++) | |
| dest+=src[src_row]; | |
| } | |
| } | } |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| Line 786 static void _select(Request& r, MethodPa | Line 979 static void _select(Request& r, MethodPa |
| source_table.set_current(row); | source_table.set_current(row); |
| bool condition=r.process_to_value(vcondition, | bool condition=r.process_to_value(vcondition, |
| /*0/*no name* /,*/ | |
| false/*don't intercept string*/).as_bool(); | false/*don't intercept string*/).as_bool(); |
| if(condition) // ...condition is true= | if(condition) // ...condition is true= |
| Line 813 MTable::MTable(): Methoded("table") { | Line 1005 MTable::MTable(): Methoded("table") { |
| // ^table.save[file] | // ^table.save[file] |
| // ^table.save[nameless;file] | // ^table.save[nameless;file] |
| add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2); | add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3); |
| // ^table.count[] | // ^table.count[] |
| add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0); | add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0); |
| Line 839 MTable::MTable(): Methoded("table") { | Line 1031 MTable::MTable(): Methoded("table") { |
| add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2); | add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2); |
| // ^table.locate[field;value] | // ^table.locate[field;value] |
| add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2); | add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3); |
| // ^table.flip[] | // ^table.flip[] |
| add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0); | add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0); |