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| version 1.4, 2001/03/12 18:13:48 | version 1.33, 2001/03/27 15:37:50 |
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| Line 1 | Line 1 |
| /* | /** @file |
| Parser | Parser: 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://design.ru/paf) | Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) |
| $Id$ | $Id$ |
| */ | */ |
| #include "pa_config_includes.h" | |
| #include "pa_common.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "_table.h" | #include "_table.h" |
| #include "pa_vtable.h" | #include "pa_vtable.h" |
| #include "pa_common.h" | #include "pa_vint.h" |
| // global var | // global var |
| VClass *table_class; | VStateless_class *table_class; |
| // methods | // methods |
| // TODO: проверить ^set в ^menu & co | |
| static void set_or_load( | static void set_or_load( |
| Request& r, | Request& r, |
| const String& method_name, Array *params, | const String& method_name, Array *params, |
| bool is_load) { | bool is_load) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| // data is last parameter | // data is last parameter |
| Value *vdata=static_cast<Value *>(params->get(params->size()-1)); | Value *vdata_or_filename=static_cast<Value *>(params->get(params->size()-1)); |
| // forcing | // forcing |
| // [this param type] | // ^load[this file name type] |
| // [this param type] | // ^set{this body type} |
| r.fail_if_junction_(true, *vdata, | r.fail_if_junction_(is_load, *vdata_or_filename, |
| method_name, "body must not be a junction"); | method_name, is_load?"file name must not be junction":"body must be junction"); |
| // data or file_name | // data or file_name |
| char *data_or_filename=vdata->as_string().cstr(); | char *data; |
| // data | if(is_load) { |
| char *data=is_load?file_read(pool, r.absolute(data_or_filename)):data_or_filename; | // 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 { | |
| // suggesting untaint language | |
| Temp_lang temp_lang(r, String::UL_TABLE); | |
| data=r.process(*vdata_or_filename).as_string().cstr(); | |
| } | |
| // parse columns | // parse columns |
| Array *columns; | Array *columns; |
| Line 59 static void set_or_load( | Line 69 static void set_or_load( |
| } | } |
| // parse cells | // parse cells |
| 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 | |
| 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); |
| Line 73 static void set_or_load( | Line 85 static void set_or_load( |
| }; | }; |
| // replace any previous table value | // replace any previous table value |
| r.self->as_vtable().set_table(table); | static_cast<VTable *>(r.self)->set_table(table); |
| } | } |
| Line 85 static void _load(Request& r, const Stri | Line 97 static void _load(Request& r, const Stri |
| set_or_load(r, method_name, params, true); | set_or_load(r, method_name, params, true); |
| } | } |
| void initialize_table_class(Pool& pool, VClass& vclass) { | static void _save(Request& r, const String& method_name, Array *params) { |
| // ^table.set[data] ^table.set[nameless;data] | Pool& pool=r.pool(); |
| Value *vfile_name=static_cast<Value *>(params->get(params->size()-1)); | |
| // forcing | |
| // ^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(); | |
| String sdata(pool); | |
| if(params->size()==1) { // not nameless=named output | |
| // write out names line | |
| if(table.columns()) { // named table | |
| for(int column=0; column<table.columns()->size(); column++) { | |
| if(column) | |
| sdata.APPEND_CONST("\t"); | |
| sdata.append(*static_cast<String *>(table.columns()->quick_get(column)), | |
| String::UL_TABLE); | |
| } | |
| } else { // nameless table | |
| int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0; | |
| if(lsize) | |
| for(int column=0; column<lsize; column++) { | |
| char *cindex_tab=(char *)malloc(MAX_NUMBER); | |
| snprintf(cindex_tab, MAX_NUMBER, "%d\t", column); | |
| sdata.APPEND_CONST(cindex_tab); | |
| } | |
| else | |
| sdata.APPEND_CONST("empty nameless table"); | |
| } | |
| sdata.APPEND_CONST("\n"); | |
| } | |
| // data lines | |
| for(int index=0; index<table.size(); index++) { | |
| Array *row=static_cast<Array *>(table.quick_get(index)); | |
| for(int column=0; column<row->size(); column++) { | |
| if(column) | |
| sdata.APPEND_CONST("\t"); | |
| sdata.append(*static_cast<String *>(row->quick_get(column)), | |
| String::UL_TABLE); | |
| } | |
| sdata.APPEND_CONST("\n"); | |
| } | |
| // write | |
| file_write(pool, r.absolute(lfile_name), sdata.cstr(), sdata.size(), true); | |
| } | |
| static void _count(Request& r, const String&, Array *) { | |
| Pool& pool=r.pool(); | |
| Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size()); | |
| r.write_no_lang(value); | |
| } | |
| static void _line(Request& r, const String&, Array *) { | |
| Pool& pool=r.pool(); | |
| Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().get_current()); | |
| r.write_no_lang(value); | |
| } | |
| static void _offset(Request& r, const String&, Array *params) { | |
| Pool& pool=r.pool(); | |
| Table& table=static_cast<VTable *>(r.self)->table(); | |
| if(params->size()) { | |
| if(int size=table.size()) { | |
| int offset= | |
| (int)r.process(*static_cast<Value *>(params->get(0))).get_double(); | |
| table.set_current((table.get_current()+offset+size)%size); | |
| } | |
| } else { | |
| Value& value=*new(pool) VInt(pool, table.get_current()); | |
| r.write_no_lang(value); | |
| } | |
| } | |
| static void _menu(Request& r, const String& method_name, Array *params) { | |
| Value& body_code=*static_cast<Value *>(params->get(0)); | |
| // 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; | |
| Table& table=static_cast<VTable *>(r.self)->table(); | |
| bool need_delim=false; | |
| for(int row=0; row<table.size(); row++) { | |
| table.set_current(row); | |
| Value& processed_body=r.process(body_code); | |
| if(delim_code) { // delimiter set? | |
| const String *string=processed_body.get_string(); | |
| if(need_delim && string && string->size()) // need delim & iteration produced string? | |
| r.write_pass_lang(r.process(*delim_code)); | |
| need_delim=true; | |
| } | |
| r.write_pass_lang(processed_body); | |
| } | |
| } | |
| static void _empty(Request& r, const String&, Array *params) { | |
| Table& table=static_cast<VTable *>(r.self)->table(); | |
| 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; | |
| Hash *hash; | |
| }; | |
| static void store_column_item_to_hash(Array::Item *item, void *info) { | |
| Record_info& ri=*static_cast<Record_info *>(info); | |
| String& column_name=*static_cast<String *>(item); | |
| const String *column_item=ri.table->item(column_name); | |
| Value *value; | |
| if(column_item) | |
| value=new(*ri.pool) VString(*column_item); | |
| else | |
| value=new(*ri.pool) VUnknown(*ri.pool); | |
| ri.hash->put(column_name, value); | |
| } | |
| static void _record(Request& r, const String&, Array *params) { | |
| Table& table=static_cast<VTable *>(r.self)->table(); | |
| if(const Array *columns=table.columns()) { | |
| Pool& pool=r.pool(); | |
| 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); | |
| } | |
| } | |
| struct Order_item { | |
| int index; | |
| Value *value; | |
| }; | |
| static void _sort(Request& r, const String& method_name, Array *params) { | |
| Value& key_maker=*(Value *)params->get(0); | |
| // forcing ^sort{this} ^sort(or this) param type | |
| r.fail_if_junction_(false, key_maker, method_name, "key-maker must be junction"); | |
| bool reverse; | |
| if(params->size()==2) { // ..[asc|desc] | |
| Value& order=*(Value *)params->get(1); | |
| // forcing ..[this param-type] | |
| r.fail_if_junction_(false, order, method_name, "order must not be junction"); | |
| reverse=order.as_string()=="asc"; | |
| } else | |
| reverse=false; | |
| // calculating key values | |
| Table& table=static_cast<VTable *>(r.self)->table(); | |
| Order_item *order=(Order_item *)malloc(sizeof(Order_item)*table.size()); | |
| Order_item *current=order; | |
| for(int i=0; i<table.size(); i++) { | |
| table.set_current(i); | |
| // calculate key value | |
| current->index=i; | |
| current->value=r.process(key_maker).get_expr_result(true/*return string as-is*/); | |
| current++; | |
| } | |
| // sort keys | |
| //\ todo | |
| // reorder table as they require in 'order' | |
| //\ todo | |
| table.set_current(0); | |
| } | |
| // initialize | |
| void initialize_table_class(Pool& pool, VStateless_class& vclass) { | |
| // ^table.set{data} | |
| // ^table.set[nameless]{data} | |
| vclass.add_native_method("set", _set, 1, 2); | vclass.add_native_method("set", _set, 1, 2); |
| // ^table.load[data] ^table.load[nameless;data] | // ^table.load[file] |
| // ^table.load[nameless;file] | |
| vclass.add_native_method("load", _load, 1, 2); | vclass.add_native_method("load", _load, 1, 2); |
| // ^table.save[file] | |
| // ^table.save[nameless;file] | |
| vclass.add_native_method("save", _save, 1, 2); | |
| // ^table.count[] | |
| vclass.add_native_method("count", _count, 0, 0); | |
| // ^table.line[] | |
| vclass.add_native_method("line", _line, 0, 0); | |
| // ^table.offset[] | |
| // ^table.offset[offset] | |
| vclass.add_native_method("offset", _offset, 0, 1); | |
| // ^table.menu{code} | |
| // ^table.menu{code}[delim] | |
| vclass.add_native_method("menu", _menu, 1, 2); | |
| // ^table.empty{code-when-empty} | |
| // ^table.empty{code-when-empty}{code-when-not} | |
| vclass.add_native_method("empty", _empty, 1, 2); | |
| // ^table.record[] | |
| vclass.add_native_method("record", _record, 0, 0); | |
| // ^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); | |
| } | } |