--- parser3/src/classes/string.C 2001/07/23 11:19:25 1.65 +++ parser3/src/classes/string.C 2002/04/19 08:54:35 1.105 @@ -1,11 +1,11 @@ /** @file Parser: @b string parser class. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) - Author: Alexander Petrosyan (http://design.ru/paf) + $Id: string.C,v 1.105 2002/04/19 08:54:35 paf Exp $ */ -static const char *RCSId="$Id: string.C,v 1.65 2001/07/23 11:19:25 parser Exp $"; #include "classes.h" #include "pa_request.h" @@ -15,10 +15,7 @@ static const char *RCSId="$Id: string.C, #include "pa_vbool.h" #include "pa_string.h" #include "pa_sql_connection.h" - -// defines - -#define STRING_CLASS_NAME "string" +#include "pa_dictionary.h" // class @@ -33,32 +30,51 @@ public: // Methoded 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); + double result=r.self->get_string()->size(); + r.write_no_lang(*new(pool) VDouble(pool, result)); } -static void _int(Request& r, const String& method_name, MethodParams *) { +static void _int(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - Value& result=*new(pool) VInt(pool, r.self->as_int()); - result.set_name(method_name); - r.write_no_lang(result); + int converted; + Value *default_code=params->size()>0? + default_code=¶ms->as_junction(0, "default must be int"):0; // (default) + try { + converted=r.self->as_int(); + } catch(...) { // convert problem + if(!default_code) // we have a problem when no default + /*re*/throw; + else + converted=r.process_to_value(*default_code).as_int(); + } + r.write_no_lang(*new(pool) VInt(pool, converted)); } -static void _double(Request& r, const String& method_name, MethodParams *) { +static void _double(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - Value& result=*new(pool) VDouble(pool, r.self->as_double()); - result.set_name(method_name); - r.write_no_lang(result); + double converted; + Value *default_code=params->size()>0? + default_code=¶ms->as_junction(0, "default must be double"):0; // (default) + try { + converted=r.self->as_double(); + } catch(...) { // convert problem + if(!default_code) // we have a problem when no default + /*re*/throw; + else + converted=r.process_to_value(*default_code).as_double(); + } + + r.write_no_lang(*new(pool) VDouble(pool, converted)); } /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - Value& fmt=params->as_junction(0, "fmt must be code"); + Value& fmt_maybe_code=params->get(0); + // for some time due to stupid {} in original design + const String& fmt=r.process_to_string(fmt_maybe_code); - Temp_lang temp_lang(r, String::UL_PASS_APPENDED); - char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr()); + char *buf=format(pool, r.self->as_double(), fmt.cstr()); String result(pool); result.APPEND_CLEAN(buf, 0, @@ -70,29 +86,31 @@ static void _double(Request& r, const St static void _left(Request& r, const String&, MethodParams *params) { Pool& pool=r.pool(); - size_t n=(size_t)r.process(params->get(0)).as_double(); + size_t n=(size_t)params->as_int(0, "n must be int", r); const String& string=*static_cast(r.self)->get_string(); - r.write_assign_lang(*new(pool) VString(string.mid(0, n))); + r.write_assign_lang(string.mid(0, n)); } static void _right(Request& r, const String&, MethodParams *params) { Pool& pool=r.pool(); - size_t n=(size_t)r.process(params->get(0)).as_double(); + size_t n=(size_t)params->as_int(0, "n must be int", r); const String& string=*static_cast(r.self)->get_string(); - r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size()))); + r.write_assign_lang(string.mid(string.size()-n, string.size())); } static void _mid(Request& r, const String&, MethodParams *params) { Pool& pool=r.pool(); - size_t p=(size_t)r.process(params->get(0)).as_double(); - size_t n=(size_t)r.process(params->get(1)).as_double(); - const String& string=*static_cast(r.self)->get_string(); - r.write_assign_lang(*new(pool) VString(string.mid(p, p+n))); + + size_t p=(size_t)params->as_int(0, "p must be int", r); + size_t n=params->size()>1? + (size_t)params->as_int(1, "n must be int", r):string.size(); + + r.write_assign_lang(string.mid(p, p+n)); } static void _pos(Request& r, const String& method_name, MethodParams *params) { @@ -124,10 +142,10 @@ static void _lsplit(Request& r, const St Table& table=*new(pool) Table(pool, &string, &columns, pieces.size()); - int size=pieces.quick_size(); - for(int i=0; i(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("-"); + // piece from last match['prestart'] to beginning of this match['prefinish'] + if(prestart!=prefinish) + *ai.dest << ai.src->mid(prestart, prefinish);//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); + ai.vtable->set_table(table); - Junction *junction=ai.replacement_code->get_junction(); - junction->rcontext=/*must be some way to get to - outside world junction->root=*/&vtable; - Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false); - - /* - ai.dest->APPEND_CONST("("); - *ai.dest << *(String *)row->get(1/*match* /); - ai.dest->APPEND_CONST(")"); - */ - *ai.dest << replaced.as_string(); + *ai.dest << ai.request->process_to_string(*ai.replacement_code); } - ai.post_match=(String *)row->get(2/*post_match*/); } else // end - *ai.dest << *ai.post_match; + *ai.dest << ai.src->mid(poststart, postfinish); } /// @todo use pcre:study somehow @@ -210,42 +220,45 @@ static void _match(Request& r, const Str 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, + bool matched=src.match( &method_name, regexp.as_string(), options, &table, search_action, 0, &was_global); + Value *result; // 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 + result=new(pool) VTable(pool, table/*TODO: clone this when table would be stacked!*/); // table of pre/match/post+substrings else result=new(pool) VBool(pool, matched); + r.write_assign_lang(*result); } else { // replace - Value& replacement_code=params->as_junction(2, "replacement code must be code"); + Value& replacement_code=params->as_junction(2, "replacement param must be code"); - String& dest=*new(pool) String(pool); + String& result=*new(pool) String(pool); + VTable vtable(pool); Replace_action_info replace_action_info={ &r, &method_name, - &src, &dest, - &replacement_code, - &src + &src, &result, + &vtable, + &replacement_code }; - src.match(r.pcre_tables, + Temp_value_element temp_match_var( + *replacement_code.get_junction()->root, + *match_var_name, &vtable); + src.match( &method_name, - r.process(regexp).as_string(), options, + r.process_to_string(regexp), options, &table, replace_action, &replace_action_info); - result=new(pool) VString(dest); + r.write_assign_lang(result); } - result->set_name(method_name); - r.write_assign_lang(*result); } static void change_case(Request& r, const String& method_name, MethodParams *params, @@ -253,8 +266,7 @@ static void change_case(Request& r, cons Pool& pool=r.pool(); const String& src=*static_cast(r.self)->get_string(); - r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables, - kind))); + r.write_assign_lang(src.change_case(pool, kind)); } static void _upper(Request& r, const String& method_name, MethodParams *params) { change_case(r, method_name, params, String::CC_UPPER); @@ -277,7 +289,7 @@ public: void add_column(void *ptr, size_t size) { if(got_column) - PTHROW(0, 0, + throw Exception("parser.runtime", &statement_string, "result must contain exactly one column"); got_column=true; @@ -286,7 +298,7 @@ public: void add_row() { /* ignore */ } void add_row_cell(void *ptr, size_t size) { if(got_cell) - PTHROW(0, 0, + throw Exception("parser.runtime", &statement_string, "result must not contain more then one row"); got_cell=true; @@ -303,37 +315,51 @@ public: String *result; }; #endif -const String* sql_result_string(Request& r, const String& method_name, MethodParams *params) { +const String* sql_result_string(Request& r, const String& method_name, MethodParams *params, + Hash *& options, Value *& default_code) { 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 offset=(ulong)(params->size()>2?params->as_int(2, r):0); + ulong limit=0; + ulong offset=0; + default_code=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(&method_name)) { + if(Value *vlimit=(Value *)options->get(*sql_limit_name)) + limit=(ulong)r.process_to_value(*vlimit).as_double(); + if(Value *voffset=(Value *)options->get(*sql_offset_name)) + offset=(ulong)r.process_to_value(*voffset).as_double(); + if(default_code=(Value *)options->get(*sql_default_name)) { + if(!default_code->get_junction()) + throw Exception("parser.runtime", + &method_name, + "default option must be code"); + } + } else + throw Exception("parser.runtime", + &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 String& statement_string=r.process_to_string(statement); const char *statement_cstr= - statement_string.cstr(String::UL_UNSPECIFIED, r.connection); + statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name)); String_sql_event_handlers handlers(pool, statement_string, statement_cstr); - bool need_rethrow=false; Exception rethrow_me; - PTRY { - r.connection->query( - statement_cstr, offset, 0, + try { + r.connection(&method_name)->query( + statement_cstr, offset, limit, handlers); + } catch(const Exception& e) { // query problem + // give more specific source [were url] + throw Exception("sql.execute", + &statement_string, + "%s", e.comment()); } - 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] @@ -344,33 +370,72 @@ const String* sql_result_string(Request& static void _sql(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - const String *string=sql_result_string(r, method_name, params); + Hash *options; + Value *default_code; + const String *string=sql_result_string(r, method_name, params, options, default_code); if(!string) { - Value& default_code=params->as_junction(1, "default result must code"); - Value& processed_code=r.process(default_code); - string=processed_code.get_string(); - if(!string) - string=empty_string; + if(default_code) { + string=&r.process_to_string(*default_code); + if(!string) + string=new(pool) String(pool); + } else + throw Exception("parser.runtime", + &method_name, + "produced no result, but no default option specified"); } - VString& result=*new(pool) VString(*string); - result.set_name(method_name); - r.write_assign_lang(result); + + r.write_assign_lang(*string); } -// constructor +static void _replace(Request& r, const String& method_name, MethodParams *params) { + Pool& pool=r.pool(); + const String& src=*static_cast(r.self)->get_string(); + + Table *table=params->as_no_junction(0, "parameter must not be code").get_table(); + if(!table) + throw Exception("parser.runtime", + &method_name, + "parameter must be table"); + + Dictionary dict(*table); + r.write_assign_lang(src.replace(pool, dict)); +} -MString::MString(Pool& apool) : Methoded(apool) { - set_name(*NEW String(pool(), STRING_CLASS_NAME)); +static void _save(Request& r, const String& method_name, MethodParams *params) { + const String& file_name=params->as_string(params->size()-1, + "file name must be string"); + const String& src=*static_cast(r.self)->get_string(); + + bool do_append=false; + if(params->size()>1) { + const String& mode=params->as_string(0, "mode must be string"); + if(mode=="append") + do_append=true; + else + throw Exception("parser.runtime", + &mode, + "unknown mode, must be 'append'"); + } + + // write + const char *buf=src.cstr(String::UL_UNSPECIFIED); + file_write(r.absolute(file_name), + buf, strlen(buf), true, do_append); +} + +// constructor +MString::MString(Pool& apool) : Methoded(apool, "string") { // ^string.length[] add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); // ^string.int[] - add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0); - + // ^string.int(default) + add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); // ^string.double[] - add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0); + // ^string.double(default) + add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); // ^string.format{format} add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1); @@ -380,7 +445,7 @@ MString::MString(Pool& apool) : Methoded // ^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); + add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2); // ^string.pos[substr] add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); @@ -399,9 +464,15 @@ MString::MString(Pool& apool) : Methoded // ^string.tolower[] add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0); - // ^string:sql[query]{default} - // ^string:sql[query]{default}(offset) - add_native_method("sql", Method::CT_STATIC, _sql, 2, 3); + // ^sql[query] + // ^sql[query][$.limit(1) $.offset(2) $.default[n/a]] + add_native_method("sql", Method::CT_STATIC, _sql, 1, 2); + + // ^string.replace[table] + add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 1); + + // ^string.save[file] + add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2); } // global variable