--- parser3/src/classes/string.C 2001/05/11 17:45:10 1.48 +++ parser3/src/classes/string.C 2001/08/31 09:26:12 1.72 @@ -4,9 +4,8 @@ Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: string.C,v 1.48 2001/05/11 17:45:10 parser Exp $ */ +static const char *RCSId="$Id: string.C,v 1.72 2001/08/31 09:26:12 parser Exp $"; #include "classes.h" #include "pa_request.h" @@ -15,6 +14,8 @@ #include "pa_vtable.h" #include "pa_vbool.h" #include "pa_string.h" +#include "pa_sql_connection.h" +#include "pa_dictionary.h" // defines @@ -26,7 +27,7 @@ class MString : public Methoded { public: MString(Pool& pool); public: // Methoded - bool used_directly() { return false; } + bool used_directly() { return true; } }; // methods @@ -38,16 +39,52 @@ static void _length(Request& r, const St r.write_no_lang(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()); + 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, 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 _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()); + bool convert_problem=false; Exception rethrow_me; + 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, 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); } @@ -55,12 +92,16 @@ static void _double(Request& r, const St /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - Value& fmt=params->get_junction(0, "fmt must be code"); + 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()); - - r.write_no_lang(String(pool, buf)); + + String result(pool); + result.APPEND_CLEAN(buf, 0, + method_name.origin().file, + method_name.origin().line); + r.write_no_lang(result); } static void _left(Request& r, const String&, MethodParams *params) { @@ -94,7 +135,7 @@ static void _mid(Request& r, const Strin static void _pos(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - Value& substr=params->get_no_junction(0, "substr must not be code"); + Value& substr=params->as_no_junction(0, "substr must not be code"); const String& string=*static_cast(r.self)->get_string(); r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string()))); @@ -103,7 +144,7 @@ static void _pos(Request& r, const Strin static void split_list(Request& r, const String& method_name, MethodParams *params, const String& string, Array& result) { - Value& delim_value=params->get_no_junction(0, "delimiter must not be code"); + Value& delim_value=params->as_no_junction(0, "delimiter must not be code"); string.split(result, 0, delim_value.as_string()); } @@ -112,13 +153,20 @@ static void _lsplit(Request& r, const St Pool& pool=r.pool(); const String& string=*static_cast(r.self)->get_string(); - Array& row=*new(pool) Array(pool); - split_list(r, method_name, params, string, row); + Array pieces(pool); + split_list(r, method_name, params, string, pieces); - Table& table=*new(pool) Table(pool, &string, - 0/*nameless*/, 1/*row preallocate(and only)*/); - table+=&row; + 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)); } @@ -126,16 +174,19 @@ static void _rsplit(Request& r, const St Pool& pool=r.pool(); const String& string=*static_cast(r.self)->get_string(); - Array list(pool); - split_list(r, method_name, params, string, list); + Array pieces(pool); + split_list(r, method_name, params, string, pieces); - Array& row=*new(pool) Array(pool); - for(int i=list.size(); --i>=0; ) - row+=list.get(i); + Array& columns=*new(pool) Array(pool); + columns+=new(pool) String(pool, "piece"); Table& table=*new(pool) Table(pool, &string, - 0/*nameless*/, 1/*row preallocate(and only)*/); - table+=&row; + &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)); } @@ -159,7 +210,7 @@ static void replace_action(Table& table, // 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 + // store found parts in one-record VTable if(table.size()) // middle table.put(0, row); else // begin @@ -169,8 +220,10 @@ static void replace_action(Table& table, vtable.set_name(*ai.origin); Junction *junction=ai.replacement_code->get_junction(); - junction->rcontext=junction->root=&vtable; + 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("("); @@ -184,35 +237,36 @@ static void replace_action(Table& table, *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(r.self)->get_string(); - Value& regexp=params->get_no_junction(0, "regexp must not be code"); + Value& regexp=params->as_no_junction(0, "regexp must not be code"); const String *options= params->size()>1? - ¶ms->get_no_junction(1, "options must not be code").as_string():0; + ¶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 - if(src.match(r.pcre_tables, + bool was_global; + bool matched=src.match(r.pcre_tables, &method_name, regexp.as_string(), options, &table, - search_action, 0)) { - // matched - if(table->columns()->size()==3 && // just matched[3=pre/match/post], no substrings - table->size()==1) // just one row, not /g_lobal search - result=new(pool) VBool(pool, true); - else // table of pre/match/post+substrings - result=new(pool) VTable(pool, table); - } else // not matched [not global] - result=new(pool) VBool(pool, false); + 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->get_junction(2, "replacement code must be code"); + Value& replacement_code=params->as_junction(2, "replacement code must be code"); String& dest=*new(pool) String(pool); Replace_action_info replace_action_info={ @@ -232,6 +286,156 @@ static void _match(Request& r, const Str 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(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& options_param=params->as_no_junction(1, "options must be hash, not code"); + if(options=options_param.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(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) { @@ -242,10 +446,11 @@ MString::MString(Pool& apool) : Methoded 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); @@ -268,6 +473,18 @@ MString::MString(Pool& apool) : Methoded // ^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); + + // ^string.replace[table] + add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 1); } // global variable