--- parser3/src/classes/hashfile.C 2001/12/19 16:19:11 1.18 +++ parser3/src/classes/hashfile.C 2009/05/05 10:06:57 1.45 @@ -1,228 +1,188 @@ /** @file Parser: @b hashfile parser class. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://paf.design.ru) - - $Id: hashfile.C,v 1.18 2001/12/19 16:19:11 paf Exp $ + Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -#include "pa_config_includes.h" +static const char * const IDENT="$Id: hashfile.C,v 1.45 2009/05/05 10:06:57 misha Exp $"; + #include "classes.h" -#ifdef DB2 #include "pa_request.h" +#include "pa_vmethod_frame.h" #include "pa_vhashfile.h" #include "pa_vhash.h" -// defines - -#define HASH_CLASS_NAME "hashfile" - // class class MHashfile : public Methoded { public: // VStateless_class - Value *create_new_value(Pool& pool) { return new(pool) VHashfile(pool); } + Value *create_new_value(Pool& apool, HashStringValue&) { return new VHashfile(apool); } public: - MHashfile(Pool& pool); + MHashfile(); public: // Methoded bool used_directly() { return true; } }; -// methods +// global variable -static void _open(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); - - self.assign( - r.absolute(params->as_string(0, "DB_HOME must be string")), - params->as_string(1, "filename must be string") - ); -} +DECLARE_CLASS_VAR(hashfile, new MHashfile, 0); -static void _transaction(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); - - // body code - Value& body_code=params->as_junction(0, "body must be code"); +// externs - // table - DB_Table_ptr table_ptr=self.get_table_ptr(&method_name); +extern String cycle_data_name; - // transaction - DB_Transaction transaction(pool, *table_ptr, self.current_transaction); +// defines for statics - // execute body - try { - r.write_assign_lang(r.process(body_code)); - } catch(...) { // process/commit problem - transaction.mark_to_rollback(); - - /*re*/throw; +#define OPEN_DATA_NAME "HASHFILE-OPEN-DATA" + +// methods + +typedef Hash HashStringBool; + +static void _open(Request& r, MethodParams& params) { + HashStringBool* file_list=static_cast(r.classes_conf.get(OPEN_DATA_NAME)); + if(!file_list) { + file_list=new HashStringBool(); + r.classes_conf.put(OPEN_DATA_NAME, file_list); } + + const String& file_spec=r.absolute(params.as_string(0, FILE_NAME_MUST_BE_STRING)); + if(file_list->get(file_spec)) + throw Exception(PARSER_RUNTIME, + 0, + "this hashfile is already opened, use existing variable"); + file_list->put(file_spec, true); + + VHashfile& self=GET_SELF(r, VHashfile); + self.open(file_spec); } -static void _hash(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); +static void _hash(Request& r, MethodParams&) { + VHashfile& self=GET_SELF(r, VHashfile); // write out result - VHash& result=*new(pool) VHash(pool, *self.get_hash(&method_name)); - result.set_name(method_name); + VHash& result=*new VHash(*self.get_hash()); r.write_no_lang(result); } -static void _cache(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); - - // key, expires, body code - const String &key=params->as_string(0, "key must be string"); - time_t lifespan=(time_t)params->as_double(1, "lifespan must be number", r); - Value& body_code=params->as_junction(2, "body must be code"); - - // transaction -//// DB_Transaction transaction(pool, *self.get_table_ptr(&method_name), self.current_transaction); - DB_Table_ptr table_ptr=self.get_table_ptr(&method_name); - - // execute body -//// try { - if(lifespan) { // 'lifespan' specified? try cached copy... - if(String *cached_body=/*transaction.*/table_ptr->get(self.current_transaction, pool, key, lifespan)) { // have cached copy? - r.write_assign_lang(*cached_body); - // happy with it - return; - } - } else // 'lifespan'=0, forget cached copy - /*transaction.*/table_ptr->remove(self.current_transaction, key); - - // save - Autosave_marked_to_cancel_cache saved(self); - - // process - Value& processed_body=r.process(body_code); - r.write_assign_lang(processed_body); - - // put it to cache if 'lifespan' specified & never called ^delete[] - if(lifespan && !self.marked_to_cancel_cache()) - /*transaction.*/table_ptr->put(self.current_transaction, key, processed_body.as_string(), lifespan); -//// } catch(...) { // process/commit problem -//// transaction.mark_to_rollback(); - -//// /*re*/throw; -//// } -} - -static void _delete(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); +static void _delete(Request& r, MethodParams& params) { + VHashfile& self=GET_SELF(r, VHashfile); - if(params->size()==0) - self.mark_to_cancel_cache(); - else { - // key - const String &key=params->as_string(0, "key must be string"); - // remove - self.get_table_ptr(&method_name)->remove(self.current_transaction, key); + if(!params.count()) { + // ^hashfile.delete[] asked to delete hashfile itself + self.delete_files(); + return; + } + // key + const String &key=params.as_string(0, "key must be string"); + // remove + self.remove(key); +} + +static void _clear(Request& r, MethodParams&) { + VHashfile& self=GET_SELF(r, VHashfile); + self.delete_files(); +} + +#ifndef DOXYGEN +struct Foreach_info { + Request* r; + const String* key_var_name; + const String* value_var_name; + Value* body_code; + Value* delim_maybe_code; + + Value* var_context; + VString* vkey; + VString* vvalue; + bool need_delim; +}; +#endif +static bool one_foreach_cycle( + const String::Body key, + const String& value, + void* ainfo) { + Foreach_info& info=*static_cast(ainfo); + if(info.key_var_name){ + info.vkey->set_string(*new String(key, String::L_TAINTED)); + info.var_context->put_element(*info.var_context, *info.key_var_name, info.vkey, false); + } + if(info.value_var_name){ + info.vvalue->set_string(value); + info.var_context->put_element(*info.var_context, *info.value_var_name, info.vvalue, false); } -} -static void _clear(Request& r, const String& method_name, MethodParams *) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); - DB_Cursor cursor( - *self.get_table_ptr(&method_name), - self.current_transaction, &method_name); - - while(true) { - if(!cursor.move(DB_NEXT)) - break; + StringOrValue sv_processed=info.r->process(*info.body_code); + Request::Skip lskip=info.r->get_skip(); info.r->set_skip(Request::SKIP_NOTHING); - cursor.remove(0/*flags*/); + const String* s_processed=sv_processed.get_string(); + if(info.delim_maybe_code && s_processed && !s_processed->is_empty()) { // delimiter set and we have body + if(info.need_delim) // need delim & iteration produced string? + info.r->write_pass_lang(info.r->process(*info.delim_maybe_code)); + else + info.need_delim=true; } + + info.r->write_pass_lang(sv_processed); + + return lskip==Request::SKIP_BREAK; } +static void _foreach(Request& r, MethodParams& params) { + Temp_hash_value + cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r); -static void _foreach(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); - - const String& key_var_name=params->as_string(0, "key-var name must be string"); - const String& value_var_name=params->as_string(1, "value-var name must be string"); - Value& body_code=params->as_junction(2, "body must be code"); - Value *delim_maybe_code=params->size()>3?¶ms->get(3):0; - - bool need_delim=false; - Value& var_context=*body_code.get_junction()->wcontext; - VString& vkey=*new(pool) VString(pool); - VString& vvalue=*new(pool) VString(pool); - - DB_Cursor cursor( - *self.get_table_ptr(&method_name), - self.current_transaction, &method_name); - while(true) { - String *key; - String *data; - if(!cursor.get(pool, key, data, DB_NEXT)) - break; - - if(!key) - continue; // expired - - vkey.set_string(*key); - vvalue.set_string(*data); - var_context.put_element(key_var_name, &vkey); - var_context.put_element(value_var_name, &vvalue); - - Value& processed_body=r.process(body_code); - if(delim_maybe_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_maybe_code)); - need_delim=true; - } - r.write_pass_lang(processed_body); - } + const String& key_var_name=params.as_string(0, "key-var name must be string"); + const String& value_var_name=params.as_string(1, "value-var name must be string"); + + Foreach_info info={ + &r, + key_var_name.is_empty()? 0 : &key_var_name, + value_var_name.is_empty()? 0 : &value_var_name, + ¶ms.as_junction(2, "body must be code"), + /*delimiter*/params.count()>3 ? params.get(3) : 0, + /*var_context*/r.get_method_frame()->caller(), + /*vkey=*/new VString, + /*vvalue=*/new VString, + false + }; + + VHashfile& self=GET_SELF(r, VHashfile); + self.for_each(one_foreach_cycle, &info); } -// constructor +static bool one_cleanup_cycle(const String::Body, const String&, void*) { + return false; +} +static void _cleanup(Request& r, MethodParams&) { + VHashfile& self=GET_SELF(r, VHashfile); -MHashfile::MHashfile(Pool& apool) : Methoded(apool) { - set_name(*NEW String(pool(), HASH_CLASS_NAME)); + self.for_each(one_cleanup_cycle, 0); +} - // ^hashfile::open[db_home;filename] - add_native_method("open", Method::CT_DYNAMIC, _open, 2, 2); - // ^transaction{code} - add_native_method("transaction", Method::CT_DYNAMIC, _transaction, 1, 1); - // ^hash[] +static void _release(Request& r, MethodParams&) { + VHashfile& self=GET_SELF(r, VHashfile); + self.close(); +} + +// constructor + +MHashfile::MHashfile(): Methoded("hashfile") { + // ^hashfile::open[filename] + add_native_method("open", Method::CT_DYNAMIC, _open, 1, 1); + // ^hashfile.hash[] add_native_method("hash", Method::CT_DYNAMIC, _hash, 0, 0); - // ^cache[key](seconds){code} - add_native_method("cache", Method::CT_DYNAMIC, _cache, 3, 3); // ^hashfile.delete[key] add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 1); - // ^hashfile.clear[] + // ^hashfile.clear[] -- for backward compatibility. use .delete[] instead. add_native_method("clear", Method::CT_DYNAMIC, _clear, 0, 0); + // ^hashfile.release[] + add_native_method("release", Method::CT_DYNAMIC, _release, 0, 0); + // ^hashfile.cleanup[] + add_native_method("cleanup", Method::CT_DYNAMIC, _cleanup, 0, 0); + add_native_method("defecate", Method::CT_DYNAMIC, _cleanup, 0, 0); // ^hashfile.foreach[key;value]{code}[delim] add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 2+1, 2+1+1); } - -// global variable - -Methoded *hashfile_base_class; - -#endif - -// creator - -Methoded *MHashfile_create(Pool& pool) { - return -#ifdef DB2 - hashfile_base_class=new(pool) MHashfile(pool) -#else - 0 -#endif - ; -}