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| version 1.34, 2001/03/27 16:35:52 | version 1.136, 2001/12/15 21:28:18 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: table parser class. | Parser: @b table parser class. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | $Id$ |
| */ | */ |
| #include "pa_config_includes.h" | #include "classes.h" |
| #include "pa_common.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_vint.h" | #include "pa_vint.h" |
| #include "pa_sql_connection.h" | |
| #include "pa_vbool.h" | |
| // defines | |
| #define TABLE_CLASS_NAME "table" | |
| // class | |
| // global var | class MTable : public Methoded { |
| public: // VStateless_class | |
| Value *create_new_value(Pool& pool) { return new(pool) VTable(pool); } | |
| VStateless_class *table_class; | public: |
| MTable(Pool& pool); | |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | |
| // methods | // methods |
| static void set_or_load( | static void _set(Request& r, const String& method_name, MethodParams *params) { |
| Request& r, | |
| const String& method_name, Array *params, | |
| bool is_load) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| // data is last parameter | // data is last parameter |
| Value *vdata_or_filename=static_cast<Value *>(params->get(params->size()-1)); | Temp_lang temp_lang(r, String::UL_PASS_APPENDED); |
| // forcing | const String& data= |
| // ^load[this file name type] | r.process(params->as_junction(params->size()-1, "body must be code")).as_string(); |
| // ^set{this body type} | |
| r.fail_if_junction_(is_load, *vdata_or_filename, | size_t pos_after=0; |
| method_name, is_load?"file name must not be junction":"body must be junction"); | // parse columns |
| Array *columns; | |
| // data or file_name | if(params->size()==2) { |
| char *data; | columns=0; |
| if(is_load) { | |
| // forcing untaint language | |
| String lfile_name(pool); | |
| lfile_name.append(vdata_or_filename->as_string(), String::UL_FILE_NAME, true); | |
| // loading text | |
| data=file_read_text(pool, r.absolute(lfile_name)); | |
| } else { | } else { |
| // suggesting untaint language | columns=new(pool) Array(pool); |
| Temp_lang temp_lang(r, String::UL_TABLE); | |
| data=r.process(*vdata_or_filename).as_string().cstr(); | Array head(pool); |
| data.split(head, &pos_after, "\n", 1, String::UL_CLEAN, 1); | |
| if(head.size()) | |
| head.get_string(0)->split(*columns, 0, "\t", 1, String::UL_CLEAN); | |
| } | |
| Table& table=*new(pool) Table(pool, &method_name, columns); | |
| // parse cells | |
| Array rows(pool); | |
| data.split(rows, &pos_after, "\n", 1, String::UL_CLEAN); | |
| Array_iter i(rows); | |
| while(i.has_next()) { | |
| Array& row=*new(pool) Array(pool); | |
| const String& string=*i.next_string(); | |
| // remove comment lines | |
| if(!string.size()) | |
| continue; | |
| string.split(row, 0, "\t", 1, String::UL_CLEAN); | |
| table+=&row; | |
| } | } |
| // replace any previous table value | |
| static_cast<VTable *>(r.self)->set_table(table); | |
| } | |
| static void _load(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| // filename is last parameter | |
| Value& vfile_name=params->as_no_junction(params->size()-1, | |
| "file name must not be code"); | |
| // loading text | |
| char *data=file_read_text(pool, r.absolute(vfile_name.as_string())); | |
| // parse columns | // parse columns |
| Array *columns; | Array *columns; |
| #ifndef NO_STRING_ORIGIN | #ifndef NO_STRING_ORIGIN |
| Line 63 static void set_or_load( | Line 99 static void set_or_load( |
| if(char *row_chars=getrow(&data)) | if(char *row_chars=getrow(&data)) |
| do { | do { |
| String *name=new(pool) String(pool); | String *name=new(pool) String(pool); |
| name->APPEND(lsplit(&row_chars, '\t'), 0, file, line++); | name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++); |
| *columns+=name; | *columns+=name; |
| } while(row_chars); | } while(row_chars); |
| } | } |
| Line 72 static void set_or_load( | Line 108 static void set_or_load( |
| Table& table=*new(pool) Table(pool, &method_name, columns); | Table& table=*new(pool) Table(pool, &method_name, columns); |
| char *row_chars; | char *row_chars; |
| while(row_chars=getrow(&data)) { | while(row_chars=getrow(&data)) { |
| if(!*row_chars) // remove empty lines | // remove empty&comment lines |
| if(!*row_chars || *row_chars == '#') | |
| continue; | continue; |
| Array *row=new(pool) Array(pool); | Array *row=new(pool) Array(pool); |
| while(char *cell_chars=lsplit(&row_chars, '\t')) { | while(char *cell_chars=lsplit(&row_chars, '\t')) { |
| String *cell=new(pool) String(pool); | String *cell=new(pool) String(pool); |
| cell->APPEND(cell_chars, 0, file, line); | cell->APPEND_TAINTED(cell_chars, 0, file, line); |
| *row+=cell; | *row+=cell; |
| } | } |
| #ifndef NO_STRING_ORIGIN | |
| line++; | line++; |
| #endif | |
| table+=row; | table+=row; |
| }; | }; |
| Line 88 static void set_or_load( | Line 127 static void set_or_load( |
| static_cast<VTable *>(r.self)->set_table(table); | static_cast<VTable *>(r.self)->set_table(table); |
| } | } |
| /// @todo "z\nz" "zzz""zz" | |
| static void _set(Request& r, const String& method_name, Array *params) { | static void _save(Request& r, const String& method_name, MethodParams *params) { |
| set_or_load(r, method_name, params, false); | |
| } | |
| static void _load(Request& r, const String& method_name, Array *params) { | |
| set_or_load(r, method_name, params, true); | |
| } | |
| static void _save(Request& r, const String& method_name, Array *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value *vfile_name=static_cast<Value *>(params->get(params->size()-1)); | Value& vfile_name=params->as_no_junction(params->size()-1, |
| // forcing | "file name must not be code"); |
| // ^save[this body type] | |
| r.fail_if_junction_(true, *vfile_name, | |
| method_name, "file name must not be junction"); | |
| // forcing untaint language | |
| String lfile_name(pool); | |
| lfile_name.append(vfile_name->as_string(), | |
| String::UL_FILE_NAME, true); | |
| Table& table=static_cast<VTable *>(r.self)->table(); | Table& table=static_cast<VTable *>(r.self)->table(); |
| bool do_append=false; | |
| String sdata(pool); | String sdata(pool); |
| if(params->size()==1) { // not nameless=named output | if(params->size()==1) { // named output |
| // write out names line | // write out names line |
| if(table.columns()) { // named table | if(table.columns()) { // named table |
| for(int column=0; column<table.columns()->size(); column++) { | Array_iter i(*table.columns()); |
| if(column) | while(i.has_next()) { |
| sdata.APPEND_CONST("\t"); | sdata.append(*i.next_string(), //*static_cast<String *>(table.columns()->quick_get(column)), |
| sdata.append(*static_cast<String *>(table.columns()->quick_get(column)), | |
| String::UL_TABLE); | String::UL_TABLE); |
| if(i.has_next()) | |
| sdata.APPEND_CONST("\t"); | |
| } | } |
| } else { // nameless table | } else { // nameless table |
| int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0; | if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0) |
| if(lsize) | |
| for(int column=0; column<lsize; column++) { | for(int column=0; column<lsize; column++) { |
| char *cindex_tab=(char *)malloc(MAX_NUMBER); | char *cindex_tab=(char *)pool.malloc(MAX_NUMBER); |
| snprintf(cindex_tab, MAX_NUMBER, "%d\t", column); | snprintf(cindex_tab, MAX_NUMBER, "%d\t", column); |
| sdata.APPEND_CONST(cindex_tab); | sdata.APPEND_CONST(cindex_tab); |
| } | } |
| Line 134 static void _save(Request& r, const Stri | Line 158 static void _save(Request& r, const Stri |
| sdata.APPEND_CONST("empty nameless table"); | sdata.APPEND_CONST("empty nameless table"); |
| } | } |
| sdata.APPEND_CONST("\n"); | sdata.APPEND_CONST("\n"); |
| } 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(0, 0, | |
| &mode, | |
| "unknown mode, must be 'append'"); | |
| } | } |
| // data lines | // data lines |
| for(int index=0; index<table.size(); index++) { | Array_iter i(table); |
| Array *row=static_cast<Array *>(table.quick_get(index)); | while(i.has_next()) { |
| for(int column=0; column<row->size(); column++) { | Array_iter c(*static_cast<Array *>(i.next())); |
| if(column) | while(c.has_next()) { |
| sdata.APPEND_CONST("\t"); | sdata.append(*c.next_string(), //*static_cast<String *>(row->quick_get(column)), |
| sdata.append(*static_cast<String *>(row->quick_get(column)), | |
| String::UL_TABLE); | String::UL_TABLE); |
| if(c.has_next()) | |
| sdata.APPEND_CONST("\t"); | |
| } | } |
| sdata.APPEND_CONST("\n"); | sdata.APPEND_CONST("\n"); |
| } | } |
| // write | // write |
| file_write(pool, r.absolute(lfile_name), sdata.cstr(), sdata.size(), true); | file_write(pool, r.absolute(vfile_name.as_string()), |
| sdata.cstr(), sdata.size(), true, do_append); | |
| } | } |
| static void _count(Request& r, const String&, Array *) { | static void _count(Request& r, const String& method_name, MethodParams *) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size()); | Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size()); |
| value.set_name(method_name); | |
| r.write_no_lang(value); | r.write_no_lang(value); |
| } | } |
| static void _line(Request& r, const String&, Array *) { | static void _line(Request& r, const String& method_name, MethodParams *) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().get_current()); | Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().current()); |
| value.set_name(method_name); | |
| r.write_no_lang(value); | r.write_no_lang(value); |
| } | } |
| static void _offset(Request& r, const String&, Array *params) { | static void _offset(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Table& table=static_cast<VTable *>(r.self)->table(); | Table& table=static_cast<VTable *>(r.self)->table(); |
| if(params->size()) { | if(params->size()) { |
| if(int size=table.size()) { | bool absolute=false; |
| int offset= | if(params->size()>1) { |
| (int)r.process(*static_cast<Value *>(params->get(0))).as_double(); | const String& whence=params->as_string(0, "whence must be string"); |
| table.set_current((table.get_current()+offset+size)%size); | if(whence=="cur") |
| } | absolute=false; |
| else if(whence=="set") | |
| absolute=true; | |
| else | |
| throw Exception(0, 0, | |
| &whence, | |
| "is invalid whence, valid are 'cur' or 'set'"); | |
| } | |
| Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression"); | |
| table.offset(absolute, r.process(offset_expr).as_int()); | |
| } else { | } else { |
| Value& value=*new(pool) VInt(pool, table.get_current()); | Value& value=*new(pool) VInt(pool, table.current()); |
| value.set_name(method_name); | |
| r.write_no_lang(value); | r.write_no_lang(value); |
| } | } |
| } | } |
| static void _menu(Request& r, const String& method_name, Array *params) { | static void _menu(Request& r, const String& method_name, MethodParams *params) { |
| Value& body_code=*static_cast<Value *>(params->get(0)); | Value& body_code=params->as_junction(0, "body must be code"); |
| // forcing ^menu{this param type} | |
| r.fail_if_junction_(false, body_code, | |
| method_name, "body must be junction"); | |
| Value *delim_code=params->size()==2?static_cast<Value *>(params->get(1)):0; | Value *delim_maybe_code=params->size()>1?¶ms->get(1):0; |
| Table& table=static_cast<VTable *>(r.self)->table(); | VTable& vtable=*static_cast<VTable *>(r.self); |
| Table& table=vtable.table(); | |
| bool need_delim=false; | bool need_delim=false; |
| for(int row=0; row<table.size(); row++) { | int saved_current=table.current(); |
| int size=table.size(); | |
| for(int row=0; row<size; row++) { | |
| table.set_current(row); | table.set_current(row); |
| Value& processed_body=r.process(body_code); | Value& processed_body=r.process(body_code); |
| if(delim_code) { // delimiter set? | if(delim_maybe_code) { // delimiter set? |
| const String *string=processed_body.get_string(); | const String *string=processed_body.get_string(); |
| if(need_delim && string && string->size()) // need delim & iteration produced string? | if(need_delim && string && string->size()) // need delim & iteration produced string? |
| r.write_pass_lang(r.process(*delim_code)); | 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(processed_body); |
| } | } |
| table.set_current(saved_current); | |
| } | } |
| static void _empty(Request& r, const String&, Array *params) { | #ifndef DOXYGEN |
| Table& table=static_cast<VTable *>(r.self)->table(); | struct Row_info { |
| if(table.size()==0) { | |
| Value& value=r.process(*static_cast<Value *>(params->get(0))); | |
| r.write_pass_lang(value); | |
| } else if(params->size()==2) { | |
| Value& value=r.process(*static_cast<Value *>(params->get(1))); | |
| r.write_pass_lang(value); | |
| } | |
| } | |
| struct Record_info { | |
| Pool *pool; | |
| Table *table; | Table *table; |
| int key_field; | |
| Array *value_fields; | |
| Hash *hash; | Hash *hash; |
| }; | }; |
| static void store_column_item_to_hash(Array::Item *item, void *info) { | #endif |
| Record_info& ri=*static_cast<Record_info *>(info); | static void table_row_to_hash(Array::Item *value, void *info) { |
| String& column_name=*static_cast<String *>(item); | Array& row=*static_cast<Array *>(value); |
| const String *column_item=ri.table->item(column_name); | Row_info& ri=*static_cast<Row_info *>(info); |
| Value *value; | Pool& pool=ri.table->pool(); |
| if(column_item) | |
| value=new(*ri.pool) VString(*column_item); | if(ri.key_field<row.size()) { |
| else | VHash& result=*new(pool) VHash(pool); |
| value=new(*ri.pool) VUnknown(*ri.pool); | Hash& hash=*result.get_hash(0); |
| ri.hash->put(column_name, value); | for(int i=0; i<ri.value_fields->size(); i++) { |
| } | int value_field=ri.value_fields->get_int(i); |
| static void _record(Request& r, const String&, Array *params) { | if(value_field<row.size()) |
| Table& table=static_cast<VTable *>(r.self)->table(); | hash.put( |
| if(const Array *columns=table.columns()) { | *ri.table->columns()->get_string(value_field), |
| Pool& pool=r.pool(); | new(pool) VString(*row.get_string(value_field))); |
| Value& value=*new(pool) VHash(pool); | } |
| Record_info record_info={&pool, &table, value.get_hash()}; | |
| columns->for_each(store_column_item_to_hash, &record_info); | |
| r.write_no_lang(value); | ri.hash->put(*row.get_string(ri.key_field), &result); |
| } | } |
| } | } |
| static void _hash(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Table& self_table=static_cast<VTable *>(r.self)->table(); | |
| Value& result=*new(pool) VHash(pool); | |
| if(const Array *columns=self_table.columns()) | |
| if(columns->size()>1) { | |
| const String& key_field_name=params->as_no_junction(0, | |
| "key field name must not be code").as_string(); | |
| int key_field=self_table.column_name2index(key_field_name, true); | |
| Array value_fields(pool); | |
| if(params->size()>1) { | |
| Value& value_fields_param=params->as_no_junction(1, "value field(s) must not be code"); | |
| if(value_fields_param.is_string()) { | |
| value_fields+=self_table.column_name2index(value_fields_param.as_string(), true); | |
| } else if(Table *value_fields_table=value_fields_param.get_table()) { | |
| for(int i=0; i<value_fields_table->size(); i++) { | |
| const String& value_field_name= | |
| *static_cast<Array *>(value_fields_table->get(i))->get_string(0); | |
| value_fields+=self_table.column_name2index(value_field_name, true); | |
| } | |
| } else | |
| throw Exception(0, 0, | |
| &method_name, | |
| "value field(s) must be string or self_table" | |
| ); | |
| } else { // by all columns, including key | |
| for(int i=0; i<columns->size(); i++) | |
| value_fields+=i; | |
| } | |
| struct Seq_item { | // integers: key_field & value_fields |
| Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0)}; | |
| self_table.for_each(table_row_to_hash, &row_info); | |
| } | |
| result.set_name(method_name); | |
| r.write_no_lang(result); | |
| } | |
| #ifndef DOXYGEN | |
| struct Table_seq_item { | |
| Array *row; | Array *row; |
| union { | union { |
| char *c_str; | char *c_str; |
| double d; | double d; |
| } value; | } value; |
| }; | }; |
| #endif | |
| static int sort_cmp_string(const void *a, const void *b) { | static int sort_cmp_string(const void *a, const void *b) { |
| return strcmp( | return strcmp( |
| static_cast<const Seq_item *>(a)->value.c_str, | static_cast<const Table_seq_item *>(a)->value.c_str, |
| static_cast<const Seq_item *>(b)->value.c_str | static_cast<const Table_seq_item *>(b)->value.c_str |
| ); | ); |
| } | } |
| static int sort_cmp_double(const void *a, const void *b) { | static int sort_cmp_double(const void *a, const void *b) { |
| double va=static_cast<const Seq_item *>(a)->value.d; | double va=static_cast<const Table_seq_item *>(a)->value.d; |
| double vb=static_cast<const Seq_item *>(b)->value.d; | double vb=static_cast<const Table_seq_item *>(b)->value.d; |
| if(va<vb) | if(va<vb) |
| return -1; | return -1; |
| else if(va>vb) | else if(va>vb) |
| Line 264 static int sort_cmp_double(const void *a | Line 344 static int sort_cmp_double(const void *a |
| else | else |
| return 0; | return 0; |
| } | } |
| static void _sort(Request& r, const String& method_name, Array *params) { | static void _sort(Request& r, const String& method_name, MethodParams *params) { |
| Value& key_maker=*(Value *)params->get(0); | Pool& pool=r.pool(); |
| // forcing ^sort{this} ^sort(or this) param type | Value& key_maker=params->as_junction(0, "key-maker must be code"); |
| r.fail_if_junction_(false, key_maker, method_name, "key-maker must be junction"); | |
| bool reverse; | |
| if(params->size()==2) { // ..[asc|desc] | |
| Value& sequence=*(Value *)params->get(1); | |
| // forcing ..[this param-type] | |
| r.fail_if_junction_(true, sequence, method_name, "sequence must not be junction"); | |
| reverse=sequence.as_string()=="desc"; | |
| } else | |
| reverse=false; | |
| Table& table=static_cast<VTable *>(r.self)->table(); | bool reverse=params->size()>1/*..[desc|asc|]*/? |
| reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc": | |
| false; // default=asc | |
| // anything to sort? | Table& old_table=static_cast<VTable *>(r.self)->table(); |
| if(!table.size()) | Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns()); |
| return; | |
| Seq_item *seq=(Seq_item *)malloc(sizeof(Seq_item)*table.size()); | Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size()); |
| int i; | int i; |
| // calculate key values | // calculate key values |
| bool key_values_are_strings=true; | bool key_values_are_strings=true; |
| for(i=0; i<table.size(); i++) { | // save 'current' |
| table.set_current(i); | int saved_current=old_table.current(); |
| for(i=0; i<old_table.size(); i++) { | |
| old_table.set_current(i); | |
| // calculate key value | // calculate key value |
| seq[i].row=(Array *)table.get(i); | seq[i].row=(MethodParams *)old_table.get(i); |
| Value& value=*r.process(key_maker).as_expr_result(true/*return string as-is*/); | Value& value=*r.process(key_maker).as_expr_result(true/*return string as-is*/); |
| if(i==0) // determining key values type by first one | if(i==0) // determining key values type by first one |
| key_values_are_strings=value.is_string(); | key_values_are_strings=value.is_string(); |
| Line 302 static void _sort(Request& r, const Stri | Line 375 static void _sort(Request& r, const Stri |
| else | else |
| seq[i].value.d=value.as_double(); | seq[i].value.d=value.as_double(); |
| } | } |
| // restore 'current' | |
| old_table.set_current(saved_current); | |
| // sort keys | // sort keys |
| _qsort(seq, table.size(), sizeof(Seq_item), | _qsort(seq, old_table.size(), sizeof(Table_seq_item), |
| key_values_are_strings?sort_cmp_string:sort_cmp_double); | key_values_are_strings?sort_cmp_string:sort_cmp_double); |
| // reorder table as they require in 'seq' | // reorder table as they require in 'seq' |
| for(i=0; i<table.size(); i++) | for(i=0; i<old_table.size(); i++) |
| table.put(i, seq[reverse?table.size()-1-i:i].row); | new_table+=seq[reverse?old_table.size()-1-i:i].row; |
| // replace any previous table value | |
| static_cast<VTable *>(r.self)->set_table(new_table); | |
| } | |
| // reset 'current' | static void _locate(Request& r, const String& method_name, MethodParams *params) { |
| table.set_current(0); | Pool& pool=r.pool(); |
| VTable& vtable=*static_cast<VTable *>(r.self); | |
| Table& table=vtable.table(); | |
| Value& result=*new(pool) VBool(pool, table.locate( | |
| params->as_string(0, "column name must be string"), | |
| params->as_string(1, "value must be string") | |
| )); | |
| result.set_name(method_name); | |
| r.write_no_lang(result); | |
| } | |
| static void _flip(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| VTable& vtable=*static_cast<VTable *>(r.self); | |
| Table& old_table=*vtable.get_table(); | |
| Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/); | |
| if(old_table.size()) | |
| if(int old_cols=old_table.at(0).size()) | |
| for(int column=0; column<old_cols; column++) { | |
| Array& new_row=*new(pool) Array(pool, old_table.size()); | |
| for(int i=0; i<old_table.size(); i++) { | |
| const Array& old_row=old_table.at(i); | |
| new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool); | |
| } | |
| new_table+=&new_row; | |
| } | |
| r.write_no_lang(*new(pool) VTable(pool, &new_table)); | |
| } | |
| static void _append(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| // data | |
| Temp_lang temp_lang(r, String::UL_PASS_APPENDED); | |
| const String& string= | |
| r.process(params->as_junction(0, "body must be code")).as_string(); | |
| // parse cells | |
| Array& row=*new(pool) Array(pool); | |
| string.split(row, 0, "\t", 1, String::UL_CLEAN); | |
| VTable& vtable=*static_cast<VTable *>(r.self); | |
| vtable.table()+=&row; | |
| } | |
| static void _join(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table(); | |
| if(!maybe_src) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "source is not a table"); | |
| Table& src=*maybe_src; | |
| Table& dest=static_cast<VTable *>(r.self)->table(); | |
| if(&src == &dest) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "source and destination are same table"); | |
| if(const Array *dest_columns=dest.columns()) { // dest is named | |
| int saved_src_current=src.current(); | |
| for(int src_row=0; src_row<src.size(); src_row++) { | |
| src.set_current(src_row); | |
| Array& dest_row=*new(pool) Array(pool); | |
| for(int dest_column=0; dest_column<dest_columns->size(); dest_column++) | |
| dest_row+=src.item(*dest_columns->get_string(dest_column)); | |
| dest+=&dest_row; | |
| } | |
| src.set_current(saved_src_current); | |
| } else { // dest is nameless | |
| for(int src_row=0; src_row<src.size(); src_row++) | |
| dest+=&src.at(src_row); | |
| } | |
| } | } |
| // initialize | #ifndef DOXYGEN |
| class Table_sql_event_handlers : public SQL_Driver_query_event_handlers { | |
| public: | |
| Table_sql_event_handlers(Pool& apool, const String& amethod_name, | |
| const String& astatement_string, const char *astatement_cstr) : | |
| pool(apool), | |
| method_name(amethod_name), | |
| statement_string(astatement_string), | |
| statement_cstr(astatement_cstr), | |
| columns(*new(pool) Array(pool)), | |
| row(0), | |
| table(0) | |
| { | |
| } | |
| void initialize_table_class(Pool& pool, VStateless_class& vclass) { | void add_column(void *ptr, size_t size) { |
| // ^table.set{data} | String *column=new(pool) String(pool); |
| // ^table.set[nameless]{data} | column->APPEND_TAINTED( |
| vclass.add_native_method("set", _set, 1, 2); | (const char *)ptr, size, |
| statement_cstr, 0); | |
| columns+=column; | |
| } | |
| void before_rows() { | |
| table=new(pool) Table(pool, &method_name, &columns); | |
| } | |
| void add_row() { | |
| (*table)+=(row=new(pool) Array(pool)); | |
| } | |
| void add_row_cell(void *ptr, size_t size) { | |
| String *cell=new(pool) String(pool); | |
| if(size) | |
| cell->APPEND_TAINTED( | |
| (const char *)ptr, size, | |
| statement_cstr, table->size()-1); | |
| (*row)+=cell; | |
| } | |
| // ^table.load[file] | private: |
| // ^table.load[nameless;file] | Pool& pool; |
| vclass.add_native_method("load", _load, 1, 2); | const String& method_name; |
| const String& statement_string; const char *statement_cstr; | |
| Array& columns; | |
| Array *row; | |
| public: | |
| Table *table; | |
| }; | |
| #endif | |
| static void _sql(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| if(!r.connection) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "without connect"); | |
| Value& statement=params->as_junction(0, "statement must be code"); | |
| ulong limit=0; | |
| ulong offset=0; | |
| if(params->size()>1) { | |
| Value& voptions=params->as_no_junction(1, "options must be hash, not code"); | |
| if(voptions.is_defined()) | |
| if(Hash *options=voptions.get_hash(&method_name)) { | |
| if(Value *vlimit=(Value *)options->get(*sql_limit_name)) | |
| limit=(ulong)r.process(*vlimit).as_double(); | |
| if(Value *voffset=(Value *)options->get(*sql_offset_name)) | |
| offset=(ulong)r.process(*voffset).as_double(); | |
| } else | |
| throw Exception(0, 0, | |
| &method_name, | |
| "options must be hash"); | |
| } | |
| Temp_lang temp_lang(r, String::UL_SQL); | |
| const String& statement_string=r.process(statement).as_string(); | |
| const char *statement_cstr= | |
| statement_string.cstr(String::UL_UNSPECIFIED, r.connection); | |
| Table_sql_event_handlers handlers(pool, method_name, | |
| statement_string, statement_cstr); | |
| try { | |
| #ifdef RESOURCES_DEBUG | |
| struct timeval mt[2]; | |
| //measure:before | |
| gettimeofday(&mt[0],NULL); | |
| #endif | |
| r.connection->query( | |
| statement_cstr, offset, limit, | |
| handlers); | |
| #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 | |
| } catch(const Exception& e) { // query problem | |
| // more specific source [were url] | |
| throw Exception(e.type(), e.code(), | |
| &statement_string, | |
| "%s", e.comment()); | |
| } | |
| Table *result= | |
| handlers.table?handlers.table: // query resulted in table? return it | |
| new(pool) Table(pool, &method_name, 0); // query returned no table, fake it | |
| // replace any previous table value | |
| static_cast<VTable *>(r.self)->set_table(*result); | |
| } | |
| static void _columns(Request& r, const String& method_name, MethodParams *) { | |
| Pool& pool=r.pool(); | |
| Array& result_columns=*new(pool) Array(pool); | |
| result_columns+=new(pool) String(pool, "column"); | |
| Table& result_table=*new(pool) Table(pool, &method_name, &result_columns); | |
| Table& source_table=static_cast<VTable *>(r.self)->table(); | |
| if(const Array *source_columns=source_table.columns()) { | |
| Array_iter i(*source_columns); | |
| while(i.has_next()) { | |
| Array& result_row=*new(pool) Array(pool); | |
| result_row+=i.next(); | |
| result_table+=&result_row; | |
| } | |
| } | |
| VTable& result=*new(pool) VTable(pool, &result_table); | |
| result.set_name(method_name); | |
| r.write_no_lang(result); | |
| } | |
| // constructor | |
| MTable::MTable(Pool& apool) : Methoded(apool) { | |
| set_name(*NEW String(pool(), TABLE_CLASS_NAME)); | |
| // ^table:set{data} | |
| // ^table:set[nameless]{data} | |
| add_native_method("set", Method::CT_DYNAMIC, _set, 1, 2); | |
| // ^table:load[file] | |
| // ^table:load[nameless;file] | |
| add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2); | |
| // ^table.save[file] | // ^table.save[file] |
| // ^table.save[nameless;file] | // ^table.save[nameless;file] |
| vclass.add_native_method("save", _save, 1, 2); | add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2); |
| // ^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[] |
| // ^table.offset[offset] | // ^table.offset(offset) |
| vclass.add_native_method("offset", _offset, 0, 1); | // ^table.offset[cur|set](offset) |
| add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2); | |
| // ^table.menu{code} | // ^table.menu{code} |
| // ^table.menu{code}[delim] | // ^table.menu{code}[delim] |
| vclass.add_native_method("menu", _menu, 1, 2); | add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2); |
| // ^table:hash[key field name] | |
| // ^table:hash[key field name][value field name(s) string/table] | |
| add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 2); | |
| // ^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, 2, 2); | |
| // ^table.flip[] | |
| add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0); | |
| // ^table.empty{code-when-empty} | // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d} |
| // ^table.empty{code-when-empty}{code-when-not} | add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1); |
| vclass.add_native_method("empty", _empty, 1, 2); | |
| // ^table.record[] | // ^table.join[table] |
| vclass.add_native_method("record", _record, 0, 0); | add_native_method("join", Method::CT_DYNAMIC, _join, 1, 1); |
| // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[asc|desc] | |
| // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[asc|desc] | |
| vclass.add_native_method("sort", _sort, 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); | |
| } | |
| // global variable | |
| Methoded *table_class; | |
| // creator | |
| Methoded *MTable_create(Pool& pool) { | |
| return table_class=new(pool) MTable(pool); | |
| } |