|
|
| version 1.8, 2001/03/12 20:59:27 | version 1.188, 2003/11/04 12:04:39 |
|---|---|
| Line 1 | Line 1 |
| /* | /** @file |
| Parser | Parser: @b table parser class. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | */ |
| static const char* IDENT_TABLE_C="$Date$"; | |
| #include "classes.h" | |
| #include "pa_vmethod_frame.h" | |
| #include "pa_common.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "_table.h" | |
| #include "pa_vtable.h" | #include "pa_vtable.h" |
| #include "pa_common.h" | |
| #include "pa_vint.h" | #include "pa_vint.h" |
| #include "pa_sql_connection.h" | |
| #include "pa_vbool.h" | |
| // class | |
| class MTable: public Methoded { | |
| public: // VStateless_class | |
| Value* create_new_value() { return new VTable(); } | |
| public: | |
| MTable(); | |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | |
| // global variable | |
| DECLARE_CLASS_VAR(table, new MTable, 0); | |
| // global var | // defines for globals |
| #define SQL_LIMIT_NAME "limit" | |
| #define SQL_OFFSET_NAME "offset" | |
| #define SQL_DEFAULT_NAME "default" | |
| #define SQL_DISTINCT_NAME "distinct" | |
| #define TABLE_REVERSE_NAME "reverse" | |
| // globals | |
| String sql_limit_name(SQL_LIMIT_NAME); | |
| String sql_offset_name(SQL_OFFSET_NAME); | |
| String sql_default_name(SQL_DEFAULT_NAME); | |
| String sql_distinct_name(SQL_DISTINCT_NAME); | |
| String table_reverse_name(TABLE_REVERSE_NAME); | |
| // local defines | |
| #define COLUMN_SEPARATOR_NAME "separator" | |
| #define COLUMN_ENCLOSER_NAME "encloser" | |
| VClass *table_class; | |
| // methods | // methods |
| static Table::Action_options get_action_options(Request& r, MethodParams& params, | |
| const Table& source) { | |
| Table::Action_options result; | |
| if(!params.count()) | |
| return result; | |
| Value& maybe_options=params.last(); | |
| /* can not do it: | |
| want to enable ^table::create[$source; | |
| # $.option[] | |
| ] | |
| but there is ^table.locate[name;value] | |
| if(maybe_options.is_string()) { // allow empty options | |
| result.defined=true; | |
| return result; | |
| } | |
| */ | |
| HashStringValue* options=maybe_options.get_hash(); | |
| if(!options) | |
| 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", | |
| &soffset, | |
| "must be 'cur' string or expression"); | |
| } else | |
| result.offset=r.process_to_value(*voffset).as_int(); | |
| } | |
| 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); | |
| } | |
| // TODO: проверить ^set в ^menu & co | static void _create(Request& r, MethodParams& params) { |
| // clone/copy part? | |
| if(Table *source=params[0].get_table()) { | |
| Table::Action_options o=get_action_options(r, params, *source); | |
| check_option_param(o.defined, params, 1, | |
| "too many parameters"); | |
| GET_SELF(r, VTable).set_table(*new Table(*source, o)); | |
| return; | |
| } | |
| static void set_or_load( | |
| Request& r, | |
| const String& method_name, Array *params, | |
| bool is_load) { | |
| Pool& pool=r.pool(); | |
| // data is last parameter | // data is last parameter |
| Value *vdata=static_cast<Value *>(params->get(params->size()-1)); | Temp_lang temp_lang(r, String::L_PASS_APPENDED); |
| // forcing | const String& data= |
| // [this param type] | r.process_to_string(params.as_junction(params.count()-1, "body must be code")); |
| // [this param type] | |
| r.fail_if_junction_(true, *vdata, | |
| method_name, "body must not be a junction"); | |
| // data or file_name | |
| char *data_or_filename=vdata->as_string().cstr(); | |
| // data | |
| char *data=is_load?file_read(pool, r.absolute(data_or_filename)):data_or_filename; | |
| // parse columns | // parse columns |
| Array *columns; | size_t raw_pos_after=0; |
| #ifndef NO_STRING_ORIGIN | Table::columns_type columns; |
| const Origin& origin=method_name.origin(); | if(params.count()==2) { |
| const char *file=origin.file; | columns=Table::columns_type(0); // nameless |
| uint line=origin.line; | |
| #endif | |
| if(params->size()==2) { | |
| columns=0; | |
| } else { | } else { |
| columns=new(pool) Array(pool); | columns=Table::columns_type(new ArrayString); |
| if(char *row_chars=getrow(&data)) | ArrayString head; |
| do { | data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1); |
| String *name=new(pool) String(pool); | if(head.count()) { |
| name->APPEND(lsplit(&row_chars, '\t'), 0, file, line++); | size_t col_pos_after=0; |
| *columns+=name; | head[0]->split(*columns, col_pos_after, "\t", String::L_AS_IS); |
| } while(row_chars); | } |
| } | } |
| Table& table=*new Table(columns); | |
| // parse cells | // parse cells |
| Table& table=*new(pool) Table(pool, method_name, columns); | |
| char *row_chars; | ArrayString rows; |
| while(row_chars=getrow(&data)) { | data.split(rows, raw_pos_after, "\n", String::L_AS_IS); |
| Array *row=new(pool) Array(pool); | Array_iterator<const String*> i(rows); |
| while(char *cell_chars=lsplit(&row_chars, '\t')) { | while(i.has_next()) { |
| String *cell=new(pool) String(pool); | Table::element_type row(new ArrayString); |
| cell->APPEND(cell_chars, 0, file, line); | const String& string=*i.next(); |
| *row+=cell; | // remove comment lines |
| } | if(!string.length()) |
| line++; | continue; |
| size_t col_pos_after=0; | |
| string.split(*row, col_pos_after, "\t", String::L_AS_IS); | |
| table+=row; | table+=row; |
| }; | } |
| // replace any previous table value | // replace any previous table value |
| r.self->as_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; | |
| } | |
| static void _set(Request& r, const String& method_name, Array *params) { | struct lsplit_result { |
| set_or_load(r, method_name, params, false); | 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; | |
| } | } |
| static void _load(Request& r, const String& method_name, Array *params) { | inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) { |
| set_or_load(r, method_name, params, true); | 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 void _count(Request& r, const String&, Array *) { | static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) { |
| Pool& pool=r.pool(); | lsplit_result result; |
| Value& value=*new(pool) VInt(pool, r.self->as_vtable().table().size()); | |
| r.wcontext->write(value, String::Untaint_lang::NO /*always object, not string*/); | 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 _line(Request& r, const String&, Array *) { | static void skip_empty_and_comment_lines( char** data_ref ) { |
| Pool& pool=r.pool(); | if(char *data=*data_ref) { |
| Value& value=*new(pool) VInt(pool, 1+r.self->as_vtable().table().get_current()); | while( char c=*data ) { |
| r.wcontext->write(value, String::Untaint_lang::NO /*always object, not string*/); | if( c== '\n' || c == '#' ) { |
| /*nowhere=*/getrow(&data); // remove empty&comment lines | |
| *data_ref=data; | |
| continue; | |
| } | |
| break; | |
| } | |
| } | |
| } | } |
| static void _offset(Request& r, const String&, Array *params) { | struct TableSeparators { |
| Pool& pool=r.pool(); | char column; |
| Table& table=r.self->as_vtable().table(); | char encloser; |
| if(params->size()) { | const String* sencloser; |
| if(int size=table.size()) { | |
| int offset=static_cast<int>( | TableSeparators() { |
| r.process(*static_cast<Value *>(params->get(0))).get_double()); | column='\t'; |
| table.set_current((table.get_current()+offset+size)%size); | 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) { | |
| const String& first_param=params.as_string(0, "file name must be string"); | |
| int filename_param_index=0; | |
| bool nameless=first_param=="nameless"; | |
| if(nameless) | |
| filename_param_index++; | |
| 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 | |
| char *data=file_read_text(r.charsets, | |
| r.absolute(params.as_string(filename_param_index, "file name must be string")), | |
| true, | |
| options | |
| ); | |
| // parse columns | |
| Table::columns_type columns; | |
| if(nameless) { | |
| columns=Table::columns_type(0); // nameless | |
| } else { | } else { |
| Value& value=*new(pool) VInt(pool, table.get_current()); | columns=Table::columns_type(new ArrayString); |
| r.wcontext->write(value, String::Untaint_lang::NO /*always object, not string*/); | |
| skip_empty_and_comment_lines(&data); | |
| while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) { | |
| *columns+=new String(sr.piece, 0, true); | |
| if(sr.delim=='\n') | |
| break; | |
| } | |
| } | |
| Table& table=*new Table(columns); | |
| // parse cells | |
| Table::element_type row(new ArrayString); | |
| skip_empty_and_comment_lines(&data); | |
| while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) { | |
| if(!sr.delim && !row->count()) // append last empty column [if without \n] | |
| break; | |
| *row+=new String(sr.piece, 0, true); | |
| if(sr.delim=='\n') { | |
| table+=row; | |
| row=new ArrayString; | |
| skip_empty_and_comment_lines(&data); | |
| } | |
| } | |
| // last line [if without \n] | |
| if(row->count()) | |
| table+=row; | |
| // replace any previous table value | |
| GET_SELF(r, VTable).set_table(table); | |
| } | |
| static void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) { | |
| if(encloser) { | |
| to<<*sencloser; | |
| // while we have 'encloser'... | |
| for( size_t pos_before, pos_after=0; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; ) { | |
| to<<from.mid(pos_before+1/*+found encloser*/, pos_after-pos_before); | |
| to<<*sencloser; // doubling encloser | |
| pos_after=pos_before+1; | |
| } | |
| // 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) { | |
| 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(); | |
| String sdata; | |
| if(output_column_names) { | |
| if(table.columns()) { // named table | |
| for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) { | |
| maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser ); | |
| if(i.has_next()) | |
| sdata.append_know_length("\t", 1, String::L_CLEAN); | |
| } | |
| } else { // nameless table [we were asked to output column names] | |
| if(int lsize=table.count()?table[0]->count():0) | |
| for(int column=0; column<lsize; column++) { | |
| char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER]; | |
| sdata.append_know_length(cindex_tab, | |
| snprintf(cindex_tab, MAX_NUMBER, | |
| column<lsize-1?"%d\t":"%d", column), | |
| String::L_CLEAN); | |
| } | |
| else | |
| sdata.append_help_length("empty nameless table", 0, String::L_CLEAN); | |
| } | |
| sdata.append_know_length("\n", 1, String::L_CLEAN); | |
| } | } |
| // data lines | |
| Array_iterator<ArrayString*> i(table); | |
| while(i.has_next()) { | |
| for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) { | |
| maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser ); | |
| if(c.has_next()) | |
| sdata.append_know_length("\t", 1, String::L_CLEAN); | |
| } | |
| sdata.append_know_length("\n", 1, String::L_CLEAN); | |
| } | |
| // write | |
| file_write(r.absolute(file_name), | |
| sdata.cstr(), sdata.length(), true, do_append); | |
| } | } |
| static void _menu(Request& r, const String& method_name, Array *params) { | static void _count(Request& r, MethodParams&) { |
| Value& body_code=*static_cast<Value *>(params->get(0)); | int result=GET_SELF(r, VTable).table().count(); |
| // forcing ^menu{this param type} | r.write_no_lang(*new VInt(result)); |
| r.fail_if_junction_(false, body_code, | } |
| method_name, "body must be junction"); | |
| static void _line(Request& r, MethodParams&) { | |
| int result=1+GET_SELF(r, VTable).table().current(); | |
| r.write_no_lang(*new VInt(result)); | |
| } | |
| static void _offset(Request& r, MethodParams& params) { | |
| Table& table=GET_SELF(r, VTable).table(); | |
| if(params.count()) { | |
| bool absolute=false; | |
| if(params.count()>1) { | |
| const String& whence=params.as_string(0, "whence must be string"); | |
| if(whence=="cur") | |
| absolute=false; | |
| else if(whence=="set") | |
| absolute=true; | |
| else | |
| throw Exception("parser.runtime", | |
| &whence, | |
| "is invalid whence, valid are 'cur' or 'set'"); | |
| } | |
| Value& offset_expr=params.as_junction(params.count()-1, "offset must be expression"); | |
| table.offset(absolute, r.process_to_value(offset_expr).as_int()); | |
| } else | |
| r.write_no_lang(*new VInt(table.current())); | |
| } | |
| static void _menu(Request& r, MethodParams& params) { | |
| Value& body_code=params.as_junction(0, "body must be code"); | |
| Value *delim_code=params->size()==2?static_cast<Value *>(params->get(1)):0; | Value* delim_maybe_code=params.count()>1?¶ms[1]:0; |
| Table& table=r.self->as_vtable().table(); | Table& table=GET_SELF(r, VTable).table(); |
| bool need_delim=false; | bool need_delim=false; |
| for(int i=0; i<table.size(); i++) { | int saved_current=table.current(); |
| table.set_current(i); | int size=table.count(); |
| for(int row=0; row<size; row++) { | |
| Value& processed_body=r.process(body_code); | table.set_current(row); |
| if(delim_code) { // delimiter set? | |
| const String *string=processed_body.get_string(); | StringOrValue sv_processed=r.process(body_code); |
| if(need_delim && string && string->size()) // need delim & iteration produced string? | const String* s_processed=sv_processed.get_string(); |
| r.write_pass_lang(r.process(*delim_code)); | if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body |
| if(need_delim) // need delim & iteration produced string? | |
| r.write_pass_lang(r.process(*delim_maybe_code)); | |
| need_delim=true; | need_delim=true; |
| } | } |
| r.write_pass_lang(processed_body); | r.write_pass_lang(sv_processed); |
| } | } |
| table.set_current(saved_current); | |
| } | } |
| static void _empty(Request& r, const String&, Array *params) { | #ifndef DOXYGEN |
| Table& table=r.self->as_vtable().table(); | enum Table2hash_distint { D_ILLEGAL, D_FIRST, D_TABLES }; |
| if(table.size()==0) { | struct Row_info { |
| Value& value=r.process(*static_cast<Value *>(params->get(0))); | Request *r; |
| r.write_pass_lang(value); | Table *table; |
| } else if(params->size()==2) { | Value* key_code; |
| Value& value=r.process(*static_cast<Value *>(params->get(1))); | size_t key_field; |
| r.write_pass_lang(value); | Array<int>* value_fields; |
| HashStringValue* hash; | |
| Table2hash_distint distinct; | |
| size_t row; | |
| }; | |
| #endif | |
| static void table_row_to_hash(Table::element_type row, Row_info *info) { | |
| const String* key; | |
| if(info->key_code) { | |
| info->table->set_current(info->row++); // change context row | |
| StringOrValue sv_processed=info->r->process(*info->key_code); | |
| key=&sv_processed.as_string(); | |
| } else | |
| key=info->key_field<row->count()?row->get(info->key_field):0; | |
| if(!key) | |
| return; // ignore rows without key [too-short-record_array if-indexed] | |
| switch(info->distinct) { | |
| case D_ILLEGAL: case D_FIRST: | |
| { | |
| VHash* vhash=new VHash; | |
| HashStringValue& hash=vhash->hash(); | |
| for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) { | |
| size_t value_field=i.next(); | |
| if(value_field<row->count()) | |
| hash.put( | |
| *info->table->columns()->get(value_field), | |
| new VString(*row->get(value_field))); | |
| } | |
| if(info->hash->put_dont_replace(*key, vhash)) // put. existed? | |
| if(info->distinct==D_ILLEGAL) | |
| throw Exception("parser.runtime", | |
| key, | |
| "duplicate key"); | |
| } | |
| break; | |
| case D_TABLES: | |
| { | |
| VTable* vtable=(VTable*)info->hash->get(*key); // put. table existed? | |
| Table* table; | |
| if(vtable) | |
| table=vtable->get_table(); | |
| else { | |
| // no? creating table of same structure as source | |
| 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)); | |
| } | |
| *table+=row; | |
| } | |
| break; | |
| default: | |
| throw Exception(0, | |
| 0, | |
| "invalid distinct code (#%d)", info->distinct); | |
| } | |
| } | |
| static void _hash(Request& r, MethodParams& params) { | |
| Table& self_table=GET_SELF(r, VTable).table(); | |
| VHash& result=*new VHash; | |
| if(Table::columns_type columns=self_table.columns()) | |
| if(columns->count()>0) { | |
| Table2hash_distint distinct=D_ILLEGAL; | |
| int param_index=params.count()-1; | |
| if(param_index>0) { | |
| if(HashStringValue* options= | |
| params.as_no_junction(param_index, "param must not be code").get_hash()) { | |
| --param_index; | |
| int valid_options=0; | |
| if(Value* vdistinct_code=options->get(sql_distinct_name)) { | |
| valid_options++; | |
| Value& vdistinct_value=r.process_to_value(*vdistinct_code); | |
| if(vdistinct_value.is_string()) { | |
| const String& sdistinct=*vdistinct_value.get_string(); | |
| if(sdistinct=="tables") | |
| distinct=D_TABLES; | |
| else | |
| throw Exception("parser.runtime", | |
| &sdistinct, | |
| "must be 'tables' or true/false"); | |
| } else | |
| distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL; | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "called with invalid option"); | |
| } | |
| } | |
| if(param_index==2) // bad options param type | |
| throw Exception("parser.runtime", | |
| 0, | |
| "options must be hash"); | |
| Array<int> value_fields; | |
| if(param_index>0) { | |
| if(distinct!=D_ILLEGAL && distinct!=D_FIRST) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "in distinct[tables] mode you may not specify value field(s)"); | |
| Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code"); | |
| if(value_fields_param.is_string()) { | |
| value_fields+=self_table.column_name2index( | |
| *value_fields_param.get_string(), true); | |
| } else if(Table* value_fields_table=value_fields_param.get_table()) { | |
| for(Array_iterator<Table::element_type> i(*value_fields_table); | |
| i.has_next(); ) { | |
| const String& value_field_name | |
| =*i.next()->get(0); | |
| value_fields | |
| +=self_table.column_name2index(value_field_name, true); | |
| } | |
| } else | |
| throw Exception("parser.runtime", | |
| 0, | |
| "value field(s) must be string or self_table" | |
| ); | |
| } else { // by all columns, including key | |
| if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST)) | |
| for(size_t i=0; i<columns->count(); i++) | |
| value_fields+=i; | |
| } | |
| { | |
| Row_info info={0}; | |
| info.r=&r; | |
| info.table=&self_table; | |
| Value* key_param=¶ms[0]; | |
| info.key_code=key_param->get_junction()?key_param:0; | |
| info.key_field=info.key_code?-1 | |
| :self_table.column_name2index(key_param->as_string(), true); | |
| info.value_fields=&value_fields; | |
| info.hash=&result.hash(); | |
| info.distinct=distinct; | |
| info.row=0; | |
| int saved_current=self_table.current(); | |
| self_table.for_each(table_row_to_hash, &info); | |
| self_table.set_current(saved_current); | |
| } | |
| } | |
| r.write_no_lang(result); | |
| } | |
| #ifndef DOXYGEN | |
| struct Table_seq_item { | |
| ArrayString* row; | |
| union { | |
| const char *c_str; | |
| double d; | |
| } value; | |
| }; | |
| #endif | |
| static int sort_cmp_string(const void *a, const void *b) { | |
| return strcmp( | |
| static_cast<const Table_seq_item *>(a)->value.c_str, | |
| static_cast<const Table_seq_item *>(b)->value.c_str | |
| ); | |
| } | |
| static int sort_cmp_double(const void *a, const void *b) { | |
| double va=static_cast<const Table_seq_item *>(a)->value.d; | |
| double vb=static_cast<const Table_seq_item *>(b)->value.d; | |
| if(va<vb) | |
| return -1; | |
| else if(va>vb) | |
| return +1; | |
| else | |
| return 0; | |
| } | |
| static void _sort(Request& r, MethodParams& params) { | |
| Value& key_maker=params.as_junction(0, "key-maker must be code"); | |
| bool reverse=params.count()>1/*..[desc|asc|]*/? | |
| reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc": | |
| false; // default=asc | |
| Table& old_table=GET_SELF(r, VTable).table(); | |
| Table& new_table=*new Table(old_table.columns()); | |
| Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()]; | |
| int i; | |
| // calculate key values | |
| bool key_values_are_strings=true; | |
| int old_count=old_table.count(); | |
| for(i=0; i<old_count; i++) { | |
| old_table.set_current(i); | |
| // calculate key value | |
| seq[i].row=old_table[i]; | |
| Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/); | |
| if(i==0) // determining key values type by first one | |
| key_values_are_strings=value.is_string(); | |
| if(key_values_are_strings) | |
| seq[i].value.c_str=value.as_string().cstr(); | |
| else | |
| seq[i].value.d=value.as_double(); | |
| } | } |
| // sort keys | |
| _qsort(seq, old_count, sizeof(Table_seq_item), | |
| key_values_are_strings?sort_cmp_string:sort_cmp_double); | |
| // reorder table as they require in 'seq' | |
| for(i=0; i<old_count; i++) | |
| new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row); | |
| delete[] seq; | |
| // replace any previous table value | |
| GET_SELF(r, VTable).set_table(new_table); | |
| } | |
| #ifndef DOXYGEN | |
| struct Expression_is_true_info { | |
| Request* r; | |
| Value* expression_code; | |
| }; | |
| #endif | |
| static bool expression_is_true(Table& self, void* ainfo) { | |
| Expression_is_true_info& info=*static_cast<Expression_is_true_info*>(ainfo); | |
| 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"); | |
| Expression_is_true_info info={&r, &expression_code}; | |
| return table.table_first_that(expression_is_true, &info, o); | |
| } | |
| static bool _locate_name_value(Table& table, Table::Action_options o, | |
| Request& r, MethodParams& params) { | |
| check_option_param(o.defined, params, 2, | |
| "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& value=params.as_string(1, "value must be string"); | |
| return table.locate(name, value, o); | |
| } | |
| 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()? | |
| _locate_expression(table, o, r, params) : | |
| _locate_name_value(table, o, r, params); | |
| r.write_no_lang(*new VBool(result)); | |
| } | |
| static void _flip(Request& r, MethodParams& params) { | |
| Table& old_table=GET_SELF(r, VTable).table(); | |
| Table& new_table=*new Table(0); | |
| if(size_t old_count=old_table.count()) | |
| if(size_t old_cols=old_table[0]->count()) | |
| for(size_t column=0; column<old_cols; column++) { | |
| Table::element_type new_row(new ArrayString(old_count)); | |
| for(size_t i=0; i<old_count; i++) { | |
| Table::element_type old_row=old_table[i]; | |
| *new_row+=column<old_row->count()?old_row->get(column):new String; | |
| } | |
| new_table+=new_row; | |
| } | |
| r.write_no_lang(*new VTable(&new_table)); | |
| } | |
| static void _append(Request& r, MethodParams& params) { | |
| // data | |
| Temp_lang temp_lang(r, String::L_PASS_APPENDED); | |
| const String& string=r.process_to_string(params.as_junction(0, "body must be code")); | |
| // parse cells | |
| Table::element_type row=new ArrayString; | |
| size_t pos_after=0; | |
| string.split(*row, pos_after, "\t", String::L_AS_IS); | |
| GET_SELF(r, VTable).table()+=row; | |
| } | } |
| void initialize_table_class(Pool& pool, VClass& vclass) { | static void join_named_row(Table& src, Table* dest) { |
| // ^table.set[data] ^table.set[nameless;data] | Table::columns_type dest_columns=dest->columns(); |
| vclass.add_native_method("set", _set, 1, 2); | 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) { | |
| Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table(); | |
| if(!maybe_src) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "source is not a table"); | |
| 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(); | |
| if(&src == &dest) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "source and destination are same table"); | |
| if(Table::columns_type dest_columns=dest.columns()) // dest is named | |
| src.table_for_each(join_named_row, &dest, o); | |
| else // dest is nameless | |
| src.table_for_each(join_nameless_row, &dest, o); | |
| } | |
| // ^table.load[file] ^table.load[nameless;file] | #ifndef DOXYGEN |
| vclass.add_native_method("load", _load, 1, 2); | class Table_sql_event_handlers: public SQL_Driver_query_event_handlers { |
| ArrayString& columns; | |
| ArrayString* row; | |
| public: | |
| Table* table; | |
| public: | |
| Table_sql_event_handlers() : | |
| columns(*new ArrayString), row(0), table(0) { | |
| } | |
| bool add_column(SQL_Error& error, const char *str, size_t length) { | |
| try { | |
| columns+=new String(str, length, true); | |
| return false; | |
| } catch(...) { | |
| error=SQL_Error("exception occured in Table_sql_event_handlers::add_column"); | |
| return true; | |
| } | |
| } | |
| bool before_rows(SQL_Error& error) { | |
| try { | |
| table=new Table(&columns); | |
| return false; | |
| } catch(...) { | |
| error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows"); | |
| return true; | |
| } | |
| } | |
| bool add_row(SQL_Error& error) { | |
| try { | |
| *table+=row=new ArrayString; | |
| return false; | |
| } catch(...) { | |
| error=SQL_Error("exception occured in Table_sql_event_handlers::add_row"); | |
| return true; | |
| } | |
| } | |
| bool add_row_cell(SQL_Error& error, const char* str, size_t length) { | |
| try { | |
| String& cell=*new String; | |
| if(length) | |
| cell.append_know_length(str, length, String::L_TAINTED); | |
| *row+=&cell; | |
| return false; | |
| } catch(...) { | |
| error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell"); | |
| return true; | |
| } | |
| } | |
| }; | |
| #endif | |
| static void _sql(Request& r, MethodParams& params) { | |
| Value& statement=params.as_junction(0, "statement must be code"); | |
| ulong limit=0; | |
| ulong offset=0; | |
| if(params.count()>1) { | |
| Value& voptions=params.as_no_junction(1, "options must be hash, not code"); | |
| if(!voptions.is_string()) | |
| if(HashStringValue* options=voptions.get_hash()) { | |
| int valid_options=0; | |
| if(Value* vlimit=options->get(sql_limit_name)) { | |
| valid_options++; | |
| limit=(ulong)r.process_to_value(*vlimit).as_double(); | |
| } | |
| if(Value* voffset=options->get(sql_offset_name)) { | |
| valid_options++; | |
| offset=(ulong)r.process_to_value(*voffset).as_double(); | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "called with invalid option"); | |
| } else | |
| throw Exception("parser.runtime", | |
| 0, | |
| "options must be hash"); | |
| } | |
| Temp_lang temp_lang(r, String::L_SQL); | |
| const String& statement_string=r.process_to_string(statement); | |
| const char* statement_cstr= | |
| statement_string.cstr(String::L_UNSPECIFIED, r.connection()); | |
| Table_sql_event_handlers handlers; | |
| #ifdef RESOURCES_DEBUG | |
| struct timeval mt[2]; | |
| //measure:before | |
| gettimeofday(&mt[0],NULL); | |
| #endif | |
| r.connection()->query( | |
| statement_cstr, offset, limit, | |
| handlers, | |
| statement_string); | |
| #ifdef RESOURCES_DEBUG | |
| //measure:after connect | |
| gettimeofday(&mt[1],NULL); | |
| double t[2]; | |
| for(int i=0;i<2;i++) | |
| t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0; | |
| r.sql_request_time+=t[1]-t[0]; | |
| #endif | |
| Table& result= | |
| handlers.table?*handlers.table: // query resulted in table? return it | |
| *new Table(Table::columns_type(0)); // query returned no table, fake it | |
| // replace any previous table value | |
| GET_SELF(r, VTable).set_table(result); | |
| } | |
| static void _columns(Request& r, MethodParams&) { | |
| Table::columns_type result_columns(new ArrayString); | |
| *result_columns+=new String("column"); | |
| Table& result_table=*new Table(result_columns); | |
| Table& source_table=GET_SELF(r, VTable).table(); | |
| if(Table::columns_type source_columns=source_table.columns()) { | |
| for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) { | |
| Table::element_type result_row(new ArrayString); | |
| *result_row+=i.next(); | |
| result_table+=result_row; | |
| } | |
| } | |
| r.write_no_lang(*new VTable(&result_table)); | |
| } | |
| static void _select(Request& r, MethodParams& params) { | |
| Value& vcondition=params.as_junction(0, "condition must be expression"); | |
| Table& source_table=GET_SELF(r, VTable).table(); | |
| Table& result_table=*new Table(source_table.columns()); | |
| int saved_current=source_table.current(); | |
| int size=source_table.count(); | |
| for(int row=0; row<size; row++) { | |
| source_table.set_current(row); | |
| bool condition=r.process_to_value(vcondition, | |
| /*0/*no name* /,*/ | |
| false/*don't intercept string*/).as_bool(); | |
| if(condition) // ...condition is true= | |
| result_table+=source_table[row]; // =green light to go to result | |
| } | |
| source_table.set_current(saved_current); | |
| r.write_no_lang(*new VTable(&result_table)); | |
| } | |
| // constructor | |
| MTable::MTable(): Methoded("table") { | |
| // ^table::create{data} | |
| // ^table::create[nameless]{data} | |
| // ^table::create[table] | |
| add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2); | |
| // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf | |
| add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2); | |
| // ^table::load[file] | |
| // ^table::load[nameless;file] | |
| add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3); | |
| // ^table.save[file] | |
| // ^table.save[nameless;file] | |
| add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3); | |
| // ^table.count[] | // ^table.count[] |
| vclass.add_native_method("count", _count, 0, 0); | add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0); |
| // ^table.line[] | // ^table.line[] |
| vclass.add_native_method("line", _line, 0, 0); | add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0); |
| // ^table.offset[] ^table.offset[offset] | // ^table.offset[] |
| vclass.add_native_method("offset", _offset, 0, 1); | // ^table.offset(offset) |
| // ^table.offset[cur|set](offset) | |
| add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2); | |
| // ^table.menu{code} ^table.menu{code}[delim] | // ^table.menu{code} |
| vclass.add_native_method("menu", _menu, 1, 2); | // ^table.menu{code}[delim] |
| add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2); | |
| // ^table.empty{code-when-empty} ^table.empty{code-when-empty}{code-when-not} | // ^table:hash[key field name] |
| vclass.add_native_method("empty", _empty, 1, 2); | // ^table:hash[key field name][value field name(s) string/table] |
| add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3); | |
| } | // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc] |
| // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc] | |
| add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2); | |
| // ^table.locate[field;value] | |
| add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3); | |
| // ^table.flip[] | |
| add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0); | |
| // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d} | |
| add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1); | |
| // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ] | |
| add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2); | |
| // ^table:sql[query] | |
| // ^table:sql[query][$.limit(1) $.offset(2)] | |
| add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2); | |
| // ^table:columns[] | |
| add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0); | |
| // ^table.select(expression) = table | |
| add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1); | |
| } |