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| version 1.172.2.14.2.31, 2003/04/14 14:03:11 | version 1.192, 2003/11/20 16:34:23 |
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| Line 5 | Line 5 |
| 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 50 String sql_default_name(SQL_DEFAULT_NAME | Line 50 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); | String table_reverse_name(TABLE_REVERSE_NAME); |
| // local defines | |
| #define COLUMN_SEPARATOR_NAME "separator" | |
| #define COLUMN_ENCLOSER_NAME "encloser" | |
| // methods | // methods |
| static Table::Action_options get_action_options(Request& r, MethodParams& params, | static Table::Action_options get_action_options(Request& r, MethodParams& params, |
| Line 110 static Table::Action_options get_action_ | Line 116 static Table::Action_options get_action_ |
| return result; | return result; |
| } | } |
| static check_option_param(bool options_defined, | static void check_option_param(bool options_defined, |
| MethodParams& params, size_t next_param_index, | MethodParams& params, size_t next_param_index, |
| const char *msg) { | const char *msg) { |
| if(next_param_index+(options_defined?1:0) != params.count()) | if(next_param_index+(options_defined?1:0) != params.count()) |
| Line 172 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); |
| } | } |
| static char* remove_encloser(char* cstr, char encloser) { | |
| if(cstr[0]!=encloser) | |
| return cstr; | |
| size_t length=strlen(cstr); | |
| if(length<2 || cstr[length-1]!=encloser) | |
| return cstr; | |
| // 'string' | |
| cstr[length-1]=0; | |
| cstr++; | |
| // double-encloser stands for encloser | |
| char *read; | |
| char *write; | |
| write=read=cstr; | |
| while(char c=*read++) { | |
| if(c==encloser && *read==encloser) | |
| read++; | |
| *write++=c; | |
| } | |
| *write=0; // terminate | |
| return cstr; | |
| } | |
| 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 | |
| *data_ref=data; | |
| 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 179 static void _load(Request& r, MethodPara | Line 325 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 194 static void _load(Request& r, MethodPara | Line 349 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.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.append(from, String::L_TABLE); | |
| } | |
| 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 276 static void _save(Request& r, MethodPara | Line 473 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 470 static void _hash(Request& r, MethodPara | Line 667 static void _hash(Request& r, MethodPara |
| { | { |
| Row_info info; | Row_info info={0}; |
| info.r=&r; | info.r=&r; |
| info.table=&self_table; | info.table=&self_table; |
| Value* key_param=¶ms[0]; | Value* key_param=¶ms[0]; |
| Line 564 struct Expression_is_true_info { | Line 761 struct Expression_is_true_info { |
| Value* expression_code; | Value* expression_code; |
| }; | }; |
| #endif | #endif |
| static bool expression_is_true(Table& self, void* ainfo) { | static bool expression_is_true(Table&, Expression_is_true_info* info) { |
| Expression_is_true_info& info=*static_cast<Expression_is_true_info*>(ainfo); | return info->r->process_to_value(*info->expression_code).as_bool(); |
| return info.r->process_to_value(*info.expression_code).as_bool(); | |
| } | } |
| static bool _locate_expression(Table& table, Table::Action_options o, | static bool _locate_expression(Table& table, Table::Action_options o, |
| Request& r, MethodParams& params) { | Request& r, MethodParams& params) { |
| Line 578 static bool _locate_expression(Table& ta | Line 774 static bool _locate_expression(Table& ta |
| return table.table_first_that(expression_is_true, &info, o); | return table.table_first_that(expression_is_true, &info, o); |
| } | } |
| static bool _locate_name_value(Table& table, Table::Action_options o, | static bool _locate_name_value(Table& table, Table::Action_options o, |
| Request& r, MethodParams& params) { | Request&, MethodParams& params) { |
| check_option_param(o.defined, params, 2, | check_option_param(o.defined, params, 2, |
| "locate by locate by name has parameters: name, value and, maybe, options"); | "locate by locate by name has parameters: name, value and, maybe, options"); |
| const String& name=params.as_string(0, "column name must be string"); | const String& name=params.as_string(0, "column name must be string"); |
| Line 597 static void _locate(Request& r, MethodPa | Line 793 static void _locate(Request& r, MethodPa |
| } | } |
| 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 835 MTable::MTable(): Methoded("table") { | Line 1031 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); |