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| version 1.2, 2001/03/10 11:03:47 | version 1.78, 2001/10/09 07:06:00 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: @b string parser class. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include "classes.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "_string.h" | |
| #include "pa_vdouble.h" | #include "pa_vdouble.h" |
| #include "pa_vint.h" | #include "pa_vint.h" |
| #include "pa_vtable.h" | |
| #include "pa_vbool.h" | |
| #include "pa_string.h" | |
| #include "pa_sql_connection.h" | |
| #include "pa_dictionary.h" | |
| // defines | |
| #define STRING_CLASS_NAME "string" | |
| // class | |
| class MString : public Methoded { | |
| public: | |
| MString(Pool& pool); | |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | |
| // global var | // methods |
| VClass *string_class; | static void _length(Request& r, const String& method_name, MethodParams *) { |
| Pool& pool=r.pool(); | |
| Value& result=*new(pool) VDouble(pool, r.self->get_string()->size()); | |
| result.set_name(method_name); | |
| r.write_no_lang(result); | |
| } | |
| // methods | static void _int(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | |
| bool convert_problem=false; Exception rethrow_me; | |
| int converted; | |
| PTRY { | |
| converted=r.self->as_int(); | |
| } | |
| PCATCH(e) { // convert problem | |
| if(convert_problem=params->size()==0) { // we have a problem when do not have default | |
| rethrow_me=e; | |
| converted=0; | |
| } else | |
| converted=params->as_int(0, "default must be int", r); // (default) | |
| } | |
| PEND_CATCH | |
| if(convert_problem) | |
| PTHROW(rethrow_me.type(), rethrow_me.code(), | |
| rethrow_me.problem_source(), | |
| rethrow_me.comment()); | |
| Value& result=*new(pool) VInt(pool, converted); | |
| result.set_name(method_name); | |
| r.write_no_lang(result); | |
| } | |
| static void _length(Request& r, Array *) { | static void _double(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VDouble(pool, r.self->as_string().size()); | bool convert_problem=false; Exception rethrow_me; |
| r.wcontext->write(value); | double converted; |
| PTRY { | |
| converted=r.self->as_double(); | |
| } | |
| PCATCH(e) { // convert problem | |
| if(convert_problem=params->size()==0) { // we have a problem when do not have default | |
| rethrow_me=e; | |
| converted=0; | |
| } else | |
| converted=params->as_double(0, "default must be double", r); // (default) | |
| } | |
| PEND_CATCH | |
| if(convert_problem) | |
| PTHROW(rethrow_me.type(), rethrow_me.code(), | |
| rethrow_me.problem_source(), | |
| rethrow_me.comment()); | |
| Value& result=*new(pool) VDouble(pool, converted); | |
| result.set_name(method_name); | |
| r.write_no_lang(result); | |
| } | } |
| static void _int(Request& r, Array *) { | /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VInt(pool, static_cast<int>(r.self->get_double())); | |
| r.wcontext->write(value); | Value& fmt=params->as_junction(0, "fmt must be code"); |
| Temp_lang temp_lang(r, String::UL_PASS_APPENDED); | |
| char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr()); | |
| String result(pool); | |
| result.APPEND_CLEAN(buf, 0, | |
| method_name.origin().file, | |
| method_name.origin().line); | |
| r.write_no_lang(result); | |
| } | } |
| static void _double(Request& r, Array *) { | static void _left(Request& r, const String&, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VDouble(pool, r.self->get_double()); | |
| r.wcontext->write(value); | size_t n=(size_t)params->as_int(0, "n must be int", r); |
| const String& string=*static_cast<VString *>(r.self)->get_string(); | |
| r.write_assign_lang(*new(pool) VString(string.mid(0, n))); | |
| } | } |
| void initialize_string_class(Pool& pool, VClass& vclass) { | static void _right(Request& r, const String&, MethodParams *params) { |
| // ^string.length[] | Pool& pool=r.pool(); |
| String& LENGTH_NAME=*new(pool) String(pool); | |
| LENGTH_NAME.APPEND_CONST("length"); | size_t n=(size_t)params->as_int(0, "n must be int", r); |
| const String& string=*static_cast<VString *>(r.self)->get_string(); | |
| r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size()))); | |
| } | |
| Method& LENGTH_METHOD=*new(pool) Method(pool, | static void _mid(Request& r, const String&, MethodParams *params) { |
| LENGTH_NAME, | Pool& pool=r.pool(); |
| 0, 0, // min,max numbered_params_count | |
| 0/*params_names*/, 0/*locals_names*/, | |
| 0/*parser_code*/, _length | |
| ); | |
| vclass.add_method(LENGTH_NAME, LENGTH_METHOD); | |
| // ^string.int[] | size_t p=(size_t)params->as_int(0, "p must be int", r); |
| String& INT_NAME=*new(pool) String(pool); | size_t n=(size_t)params->as_int(1, "n must be int", r); |
| INT_NAME.APPEND_CONST("int"); | |
| const String& string=*static_cast<VString *>(r.self)->get_string(); | |
| r.write_assign_lang(*new(pool) VString(string.mid(p, p+n))); | |
| } | |
| Method& INT_METHOD=*new(pool) Method(pool, | static void _pos(Request& r, const String& method_name, MethodParams *params) { |
| INT_NAME, | Pool& pool=r.pool(); |
| 0, 0, // min,max numbered_params_count | |
| 0/*params_names*/, 0/*locals_names*/, | |
| 0/*parser_code*/, _int | |
| ); | |
| vclass.add_method(INT_NAME, INT_METHOD); | |
| Value& substr=params->as_no_junction(0, "substr must not be code"); | |
| const String& string=*static_cast<VString *>(r.self)->get_string(); | |
| r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string()))); | |
| } | |
| static void split_list(Request& r, const String& method_name, MethodParams *params, | |
| const String& string, | |
| Array& result) { | |
| Value& delim_value=params->as_no_junction(0, "delimiter must not be code"); | |
| string.split(result, 0, delim_value.as_string()); | |
| } | |
| static void _lsplit(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| const String& string=*static_cast<VString *>(r.self)->get_string(); | |
| Array pieces(pool); | |
| split_list(r, method_name, params, string, pieces); | |
| Array& columns=*new(pool) Array(pool); | |
| columns+=new(pool) String(pool, "piece"); | |
| Table& table=*new(pool) Table(pool, &string, | |
| &columns, pieces.size()); | |
| Array_iter i(pieces); | |
| while(i.has_next()) { | |
| Array& row=*new(pool) Array(pool); | |
| row+=i.next(); | |
| table+=&row; | |
| } | |
| r.write_no_lang(*new(pool) VTable(pool, &table)); | |
| } | |
| static void _rsplit(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| const String& string=*static_cast<VString *>(r.self)->get_string(); | |
| Array pieces(pool); | |
| split_list(r, method_name, params, string, pieces); | |
| Array& columns=*new(pool) Array(pool); | |
| columns+=new(pool) String(pool, "piece"); | |
| Table& table=*new(pool) Table(pool, &string, | |
| &columns, pieces.size()); | |
| for(int i=pieces.size(); --i>=0; ) { | |
| Array& row=*new(pool) Array(pool); | |
| row+=pieces.get(i); | |
| table+=&row; | |
| } | |
| r.write_no_lang(*new(pool) VTable(pool, &table)); | |
| } | |
| static void search_action(Table& table, Array *row, int, int, void *) { | |
| if(row) | |
| table+=row; | |
| } | |
| #ifndef DOXYGEN | |
| struct Replace_action_info { | |
| Request *request; const String *origin; | |
| const String *src; String *dest; | |
| Value *replacement_code; | |
| const String *post_match; | |
| }; | |
| #endif | |
| static void replace_action(Table& table, Array *row, int start, int finish, | |
| void *info) { | |
| Replace_action_info& ai=*static_cast<Replace_action_info *>(info); | |
| if(row) { // begin&middle | |
| // piece from last match['start'] to beginning of this match['finish'] | |
| if(start!=finish) | |
| *ai.dest << ai.src->mid(start, finish);//ai.dest->APPEND_CONST("-"); | |
| // store found parts in one-record VTable | |
| if(table.size()) // middle | |
| table.put(0, row); | |
| else // begin | |
| table+=row; | |
| { // execute 'replacement_code' in 'table' context | |
| VTable& vtable=*new(table.pool()) VTable(table.pool(), &table); | |
| vtable.set_name(*ai.origin); | |
| Junction *junction=ai.replacement_code->get_junction(); | |
| Value *saved_match_var_value=junction->root->get_element(*match_var_name); | |
| junction->root->put_element(*match_var_name, &vtable); | |
| Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false); | |
| junction->root->put_element(*match_var_name, saved_match_var_value); | |
| /* | |
| ai.dest->APPEND_CONST("("); | |
| *ai.dest << *(String *)row->get(1/*match* /); | |
| ai.dest->APPEND_CONST(")"); | |
| */ | |
| *ai.dest << replaced.as_string(); | |
| } | |
| ai.post_match=(String *)row->get(2/*post_match*/); | |
| } else // end | |
| *ai.dest << *ai.post_match; | |
| } | |
| /// @todo use pcre:study somehow | |
| static void _match(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| const String& src=*static_cast<VString *>(r.self)->get_string(); | |
| Value& regexp=params->as_no_junction(0, "regexp must not be code"); | |
| const String *options= | |
| params->size()>1? | |
| ¶ms->as_no_junction(1, "options must not be code").as_string():0; | |
| Value *result; | |
| Temp_lang temp_lang(r, String::UL_PASS_APPENDED); | |
| Table *table; | |
| if(params->size()<3) { // search | |
| bool was_global; | |
| bool matched=src.match(r.pcre_tables(), | |
| &method_name, | |
| regexp.as_string(), options, | |
| &table, | |
| search_action, 0, | |
| &was_global); | |
| // matched | |
| // not (just matched[3=pre/match/post], no substrings) or Global search | |
| if(table->columns()->size()>3 || was_global) | |
| result=new(pool) VTable(pool, table); // table of pre/match/post+substrings | |
| else | |
| result=new(pool) VBool(pool, matched); | |
| } else { // replace | |
| Value& replacement_code=params->as_junction(2, "replacement code must be code"); | |
| String& dest=*new(pool) String(pool); | |
| Replace_action_info replace_action_info={ | |
| &r, &method_name, | |
| &src, &dest, | |
| &replacement_code, | |
| &src | |
| }; | |
| src.match(r.pcre_tables(), | |
| &method_name, | |
| r.process(regexp).as_string(), options, | |
| &table, | |
| replace_action, &replace_action_info); | |
| result=new(pool) VString(dest); | |
| } | |
| result->set_name(method_name); | |
| r.write_assign_lang(*result); | |
| } | |
| static void change_case(Request& r, const String& method_name, MethodParams *params, | |
| String::Change_case_kind kind) { | |
| Pool& pool=r.pool(); | |
| const String& src=*static_cast<VString *>(r.self)->get_string(); | |
| r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables(), | |
| kind))); | |
| } | |
| static void _upper(Request& r, const String& method_name, MethodParams *params) { | |
| change_case(r, method_name, params, String::CC_UPPER); | |
| } | |
| static void _lower(Request& r, const String& method_name, MethodParams *params) { | |
| change_case(r, method_name, params, String::CC_LOWER); | |
| } | |
| #ifndef DOXYGEN | |
| class String_sql_event_handlers : public SQL_Driver_query_event_handlers { | |
| public: | |
| String_sql_event_handlers(Pool& apool, | |
| const String& astatement_string, const char *astatement_cstr) : | |
| pool(apool), | |
| statement_string(astatement_string), | |
| statement_cstr(astatement_cstr), | |
| got_column(false), got_cell(false) { | |
| result=new(pool) String(pool); | |
| } | |
| void add_column(void *ptr, size_t size) { | |
| if(got_column) | |
| PTHROW(0, 0, | |
| &statement_string, | |
| "result must contain exactly one column"); | |
| got_column=true; | |
| } | |
| void before_rows() { /* ignore */ } | |
| void add_row() { /* ignore */ } | |
| void add_row_cell(void *ptr, size_t size) { | |
| if(got_cell) | |
| PTHROW(0, 0, | |
| &statement_string, | |
| "result must not contain more then one row"); | |
| got_cell=true; | |
| result->APPEND_TAINTED((const char *)ptr, size, statement_cstr, 0); | |
| } | |
| private: | |
| Pool& pool; | |
| const String& statement_string; const char *statement_cstr; | |
| bool got_column; | |
| public: | |
| bool got_cell; | |
| String *result; | |
| }; | |
| #endif | |
| const String* sql_result_string(Request& r, const String& method_name, MethodParams *params, | |
| Hash *&options) { | |
| Pool& pool=r.pool(); | |
| if(!r.connection) | |
| PTHROW(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(options=voptions.get_hash()) { | |
| 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 | |
| PTHROW(0, 0, | |
| &method_name, | |
| "options must be hash"); | |
| } else | |
| options=0; | |
| 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); | |
| String_sql_event_handlers handlers(pool, statement_string, statement_cstr); | |
| bool need_rethrow=false; Exception rethrow_me; | |
| PTRY { | |
| r.connection->query( | |
| statement_cstr, offset, limit, | |
| handlers); | |
| } | |
| PCATCH(e) { // query problem | |
| rethrow_me=e; need_rethrow=true; | |
| } | |
| PEND_CATCH | |
| if(need_rethrow) | |
| PTHROW(rethrow_me.type(), rethrow_me.code(), | |
| &statement_string, // setting more specific source [were url] | |
| rethrow_me.comment()); | |
| if(!handlers.got_cell) | |
| return 0; // no lines, caller should return second param[default value] | |
| return handlers.result; | |
| } | |
| static void _sql(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Hash *options; | |
| const String *string=sql_result_string(r, method_name, params, options); | |
| if(!string) { | |
| if(options) { | |
| if(Value *vdefault=(Value *)options->get(*sql_default_name)) { | |
| if(!vdefault->get_junction()) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "default option must be code"); | |
| string=r.process(*vdefault).get_string(); | |
| if(!string) | |
| string=empty_string; | |
| } else | |
| PTHROW(0, 0, | |
| &method_name, | |
| "produced no result, but no default option specified"); | |
| } else | |
| PTHROW(0, 0, | |
| &method_name, | |
| "produced no result, but no options (no default) specified"); | |
| } | |
| VString& result=*new(pool) VString(*string); | |
| result.set_name(method_name); | |
| r.write_assign_lang(result); | |
| } | |
| static void _replace(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| const String& src=*static_cast<VString *>(r.self)->get_string(); | |
| Table *table=params->as_no_junction(0, "parameter must not be code").get_table(); | |
| if(!table) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "parameter must be table"); | |
| Dictionary dict(*table); | |
| r.write_assign_lang(*new(pool) VString(src.replace(pool, dict))); | |
| } | |
| // constructor | |
| MString::MString(Pool& apool) : Methoded(apool) { | |
| set_name(*NEW String(pool(), STRING_CLASS_NAME)); | |
| // ^string.length[] | |
| add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); | |
| // ^string.int[] | |
| // ^string.int(default) | |
| add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); | |
| // ^string.double[] | // ^string.double[] |
| String& DOUBLE_NAME=*new(pool) String(pool); | // ^string.double(default) |
| DOUBLE_NAME.APPEND_CONST("double"); | add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); |
| // ^string.format{format} | |
| add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1); | |
| // ^string.left(n) | |
| add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1); | |
| // ^string.right(n) | |
| add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1); | |
| // ^string.mid(p;n) | |
| add_native_method("mid", Method::CT_DYNAMIC, _mid, 2, 2); | |
| // ^string.pos[substr] | |
| add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); | |
| // ^string.lsplit[delim] | |
| add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1); | |
| // ^string.rsplit[delim] | |
| add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1); | |
| // ^string.match[regexp][options] | |
| // ^string.match[regexp][options]{replacement-code} | |
| add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3); | |
| // ^string.toupper[] | |
| add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0); | |
| // ^string.tolower[] | |
| add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0); | |
| // ^sql[query] | |
| // ^sql[query][$.limit(1) $.offset(2) $.default[n/a]] | |
| add_native_method("sql", Method::CT_STATIC, _sql, 1, 2); | |
| Method& DOUBLE_METHOD=*new(pool) Method(pool, | // ^string.replace[table] |
| DOUBLE_NAME, | add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 1); |
| 0, 0, // min,max numbered_params_count | |
| 0/*params_names*/, 0/*locals_names*/, | |
| 0/*parser_code*/, _double | |
| ); | |
| vclass.add_method(DOUBLE_NAME, DOUBLE_METHOD); | |
| } | } |
| // global variable | |
| Methoded *string_class; | |
| // creator | |
| Methoded *MString_create(Pool& pool) { | |
| return string_class=new(pool) MString(pool); | |
| } |