parser3/src/classes/table.C - diff

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Diff for /parser3/src/classes/table.C between versions 1.172.2.14.2.23 and 1.178

version 1.172.2.14.2.23, 2003/04/02 10:10:00	version 1.178, 2003/04/14 12:08:16
Line 1	Line 1
/** @file	/** @file
Parser: @b table parser class.	Parser: @b table parser class.

Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)	Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
*/	*/

static const char* IDENT_TABLE_C="$Date$";	static const char* IDENT_TABLE_C="$Date$";

#include "classes.h"	#include "classes.h"
#include "pa_vmethod_frame.h"

#include "pa_common.h"	#include "pa_common.h"
#include "pa_request.h"	#include "pa_request.h"
#include "pa_vtable.h"	#include "pa_vtable.h"
Line 19 static const char* IDENT_TABLE_C="$Date$	Line 17 static const char* IDENT_TABLE_C="$Date$

// class	// class

class MTable: public Methoded {	class MTable : public Methoded {
public: // VStateless_class	public: // VStateless_class
Value* create_new_value() { return new VTable(); }	Value *create_new_value(Pool& pool) { return new(pool) VTable(pool); }

public:	public:
MTable();	MTable(Pool& pool);

public: // Methoded	public: // Methoded
bool used_directly() { return true; }	bool used_directly() { return true; }
};	};

// global variable

DECLARE_CLASS_VAR(table, new MTable, 0);

// defines for globals

#define SQL_LIMIT_NAME "limit"
#define SQL_OFFSET_NAME "offset"
#define SQL_DEFAULT_NAME "default"
#define SQL_DISTINCT_NAME "distinct"

// globals

String sql_limit_name(SQL_LIMIT_NAME);
String sql_offset_name(SQL_OFFSET_NAME);
String sql_default_name(SQL_DEFAULT_NAME);
String sql_distinct_name(SQL_DISTINCT_NAME);

// methods	// methods

static void get_copy_options(Request& r, MethodParams* params, size_t param_index,	static Table::Action_options get_action_options(Request& r,
const Table& source,	const String& method_name, MethodParams *params,
int& offset,	const Table& source) {
int& limit) {	Table::Action_options result;

offset=0;	if(!params->size())
limit=0;	return result;
if(params->count()<=param_index)
return;	Hash* options=params->get(params->size()-1).get_hash(&method_name);
	if(!options)
Value& voptions=params->as_no_junction(param_index, "options must be hash, not code");	return result;
if(!voptions.is_string()) {
if(HashStringValue* options=voptions.get_hash()) {	result.defined=true;
int valid_options=0;	bool defined_offset=false;
if(Value* voffset=options->get(sql_offset_name)) {
valid_options++;	int valid_options=0;
if(voffset->is_string()) {	if(Value voffset=(Value )options->get(*sql_offset_name)) {
const String& soffset=*voffset->get_string();	valid_options++;
if(soffset == "cur")	defined_offset=true;
offset=source.current();	if(voffset->is_string()) {
else	const String& soffset=*voffset->get_string();
throw Exception("parser.runtime",	if(soffset == "cur")
&soffset,	result.offset=source.current();
"must be 'cur' string or expression");	else
} else
offset=r.process_to_value(*voffset).as_int();
}
if(Value* vlimit=options->get(sql_limit_name)) {
valid_options++;
limit=r.process_to_value(*vlimit).as_int();
if(!limit) // zero limit = should be 'nothing to copy', for methods zero means 'all'
limit=-1; // thus fixing
}
if(valid_options!=options->count())
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&soffset,
"called with invalid option");	"must be 'cur' string or expression");
} else	} else
throw Exception("parser.runtime",	result.offset=r.process_to_value(*voffset).as_int();
0,	}
"options must be hash");	if(Value vlimit=(Value )options->get(*sql_limit_name)) {
}	valid_options++;
	result.limit=r.process_to_value(*vlimit).as_int();
	}
	if(Value vreverse=(Value )options->get(*table_reverse_name)) {
	valid_options++;
	result.reverse=r.process_to_value(*vreverse).as_bool();
	if(result.reverse && !defined_offset)
	result.offset=source.size()-1;
	}
	if(valid_options!=options->size())
	throw Exception("parser.runtime",
	&method_name,
	"called with invalid option");

	return result;
	}
	static check_option_param(bool options_defined,
	const String& method_name, MethodParams *params,
	int next_param_index,
	const char *msg) {
	if(next_param_index+(options_defined?1:0) != params->size())
	throw Exception("parser.runtime",
	&method_name,
	"%s", msg);
}	}

static void _create(Request& r, MethodParams* params) {	static void _create(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();
// clone/copy part?	// clone/copy part?
if(Table source=(params)[0]->get_table()) {	if(const Table *source=params->get(0).get_table()) {
int offset, limit;	Table::Action_options o=get_action_options(r, method_name, params, *source);
get_copy_options(r, params, 1, *source,	check_option_param(o.defined, method_name, params, 1,
offset, limit);	"too many parameters");
GET_SELF(r, VTable).set_table(new Table(source, offset, limit));	static_cast<VTable *>(r.get_self())->
	set_table(new(pool) Table(pool, source, o));
return;	return;
}	}

// data is last parameter	// data is last parameter
Temp_lang temp_lang(r, String::L_PASS_APPENDED);	Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
const String& data=	const String& data=
r.process_to_string(params->as_junction(params->count()-1, "body must be code"));	r.process_to_string(params->as_junction(params->size()-1, "body must be code"));

	size_t pos_after=0;
// parse columns	// parse columns
size_t raw_pos_after=0;	Array *columns;
Table::columns_type columns;	if(params->size()==2) {
if(params->count()==2) {	columns=0;
columns=Table::columns_type(0); // nameless
} else {	} else {
columns=Table::columns_type(new ArrayString);	columns=new(pool) Array(pool);

ArrayString head;	Array head(pool);
data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);	data.split(head, &pos_after, "\n", 1, String::UL_AS_IS, 1);
if(head.count()) {	if(head.size())
size_t col_pos_after=0;	head.get_string(0)->split(*columns, 0, "\t", 1, String::UL_AS_IS);
head[0]->split(*columns, col_pos_after, "\t", String::L_AS_IS);
}
}	}

Table& table=*new Table(columns);	Table& table=*new(pool) Table(pool, &method_name, columns);
// parse cells	// parse cells
	Array rows(pool);
ArrayString rows;	data.split(rows, &pos_after, "\n", 1, String::UL_AS_IS);
data.split(rows, raw_pos_after, "\n", String::L_AS_IS);	Array_iter i(rows);
Array_iterator<const String*> i(rows);
while(i.has_next()) {	while(i.has_next()) {
Table::element_type row(new ArrayString);	Array& row=*new(pool) Array(pool);
const String& string=*i.next();	const String& string=*i.next_string();
// remove comment lines	// remove comment lines
if(!string.length())	if(!string.size())
continue;	continue;

size_t col_pos_after=0;	string.split(row, 0, "\t", 1, String::UL_AS_IS);
string.split(*row, col_pos_after, "\t", String::L_AS_IS);	table+=&row;
table+=row;
}	}

// replace any previous table value	// replace any previous table value
GET_SELF(r, VTable).set_table(table);	static_cast<VTable *>(r.get_self())->set_table(table);
}	}

static void _load(Request& r, MethodParams* params) {	static void _load(Request& r, const String& method_name, MethodParams *params) {
const String& first_param=params->as_string(0, "file name must be string");	Pool& pool=r.pool();
	const String& first_param=params->as_string(0, "file name must be string");
int filename_param_index=0;	int filename_param_index=0;
bool nameless=first_param=="nameless";	bool nameless=first_param=="nameless";
if(nameless)	if(nameless)
filename_param_index++;	filename_param_index++;
size_t options_param_index=filename_param_index+1;	int options_param_index=filename_param_index+1;

// loading text	// loading text
char *data=file_read_text(r.charsets.source(),	char *data=file_read_text(pool,
r.absolute(params->as_string(filename_param_index, "file name must be string")),	r.absolute(params->as_string(filename_param_index, "file name must be string")),
true,	true,
options_param_index<params->count()?params->as_no_junction(options_param_index, "additional params must be hash").get_hash():0	options_param_index<params->size()?params->as_no_junction(options_param_index, "additional params must be hash").get_hash(&method_name):0
);	);

// parse columns	// parse columns
Table::columns_type columns;	Array *columns;
	#ifndef NO_STRING_ORIGIN
	const Origin& origin=method_name.origin();
	const char *file=origin.file;
	uint line=origin.line;
	#endif
if(nameless) {	if(nameless) {
columns=Table::columns_type(0); // nameless	columns=0; // nameless
} else {	} else {
columns=Table::columns_type(new ArrayString);	columns=new(pool) Array(pool);

while(char *row_chars=getrow(&data)) {	while(char *row_chars=getrow(&data)) {
// remove empty&comment lines	// remove empty&comment lines
if(!row_chars \|\| row_chars == '#')	if(!row_chars \|\| row_chars == '#')
continue;	continue;
do {	do {
*columns+=new String(lsplit(&row_chars, '\t'), 0, true);	String *name=new(pool) String(pool);
	name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
	*columns+=name;
} while(row_chars);	} while(row_chars);

break;	break;
Line 182 static void _load(Request& r, MethodPara	Line 181 static void _load(Request& r, MethodPara
}	}

// parse cells	// parse cells
Table& table=*new Table(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)) {
// remove empty&comment lines	// remove empty&comment lines
if(!row_chars \|\| row_chars == '#')	if(!row_chars \|\| row_chars == '#')
continue;	continue;
Table::element_type row(new ArrayString);	Array *row=new(pool) Array(pool);
while(char *cell_chars=lsplit(&row_chars, '\t')) {	while(char *cell_chars=lsplit(&row_chars, '\t')) {
*row+=new String(cell_chars, 0, true);	String *cell=new(pool) String(pool);
	cell->APPEND_TAINTED(cell_chars, 0, file, line);
	*row+=cell;
}	}
	#ifndef NO_STRING_ORIGIN
	line++;
	#endif
table+=row;	table+=row;
};	};

// replace any previous table value	// replace any previous table value
GET_SELF(r, VTable).set_table(table);	static_cast<VTable *>(r.get_self())->set_table(table);
}	}

/// @todo "x\nx" "xxx""xx"	/// @todo "x\nx" "xxx""xx"
static void _save(Request& r, MethodParams* params) {	static void _save(Request& r, const String& method_name, MethodParams *params) {
Value& vfile_name=params->as_no_junction(params->count()-1, "file name must not be code");	Pool& pool=r.pool();
	Value& vfile_name=params->as_no_junction(params->size()-1,
	"file name must not be code");

Table& table=GET_SELF(r, VTable).table();	Table& table=static_cast<VTable *>(r.get_self())->table(&method_name);

bool do_append=false;	bool do_append=false;
String sdata;	String sdata(pool);
if(params->count()==1) { // named output	if(params->size()==1) { // named output
// write out names line	// write out names line
if(table.columns()) { // named table	if(table.columns()) { // named table
for(Array_iterator<const String> i(table.columns()); i.has_next(); ) {	Array_iter i(*table.columns());
sdata.append(*i.next(), String::L_TABLE);	while(i.has_next()) {
	sdata.append(i.next_string(), //static_cast<String *>(table.columns()->quick_get(column)),
	String::UL_TABLE);
if(i.has_next())	if(i.has_next())
sdata.append_help_length("\t", 1, String::L_CLEAN);	sdata.APPEND_CONST("\t");
}	}
} else { // nameless table	} else { // nameless table
if(int lsize=table.count()?table[0]->count():0)	if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0)
for(int column=0; column<lsize; column++) {	for(int column=0; column<lsize; column++) {
char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];	char cindex_tab=(char )pool.malloc(MAX_NUMBER);
sdata.append_help_length(cindex_tab,	snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),	sdata.APPEND_CONST(cindex_tab);
String::L_CLEAN);
}	}
else	else
sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);	sdata.APPEND_CONST("empty nameless table");
}	}
sdata.append_help_length("\n", 1, String::L_CLEAN);	sdata.APPEND_CONST("\n");
} else { // mode specified	} else { // mode specified
const String& mode=params->as_string(0, "mode must be string");	const String& mode=params->as_string(0, "mode must be string");
if(mode=="append")	if(mode=="append")
do_append=true;	do_append=true;
else if(mode=="nameless")	else if(mode=="nameless")
Line 240 static void _save(Request& r, MethodPara	Line 247 static void _save(Request& r, MethodPara

}	}
// data lines	// data lines
Array_iterator<ArrayString*> i(table);	Array_iter i(table);
while(i.has_next()) {	while(i.has_next()) {
for(Array_iterator<const String> c(i.next()); c.has_next(); ) {	Array_iter c(static_cast<Array >(i.next()));
sdata.append(*c.next(), String::L_TABLE);	while(c.has_next()) {
	if(const String *s=c.next_string())
	sdata.append(*s,
	String::UL_TABLE);
if(c.has_next())	if(c.has_next())
sdata.append_help_length("\t", 1, String::L_CLEAN);	sdata.APPEND_CONST("\t");
}	}
sdata.append_help_length("\n", 1, String::L_CLEAN);	sdata.APPEND_CONST("\n");
}	}

// write	// write
file_write(r.absolute(vfile_name.as_string()),	file_write(r.absolute(vfile_name.as_string()),
sdata.cstr(), sdata.length(), true, do_append);	sdata.cstr(), sdata.size(), true, do_append);
}	}

static void _count(Request& r, MethodParams* ) {	static void _count(Request& r, const String& method_name, MethodParams *) {
int result=GET_SELF(r, VTable).table().count();	Pool& pool=r.pool();
r.write_no_lang(*new VInt(result));	int result=static_cast<VTable *>(r.get_self())->table(&method_name).size();
	r.write_no_lang(*new(pool) VInt(pool, result));
}	}

static void _line(Request& r, MethodParams* ) {	static void _line(Request& r, const String& method_name, MethodParams *) {
int result=1+GET_SELF(r, VTable).table().current();	Pool& pool=r.pool();
r.write_no_lang(*new VInt(result));	int result=1+static_cast<VTable *>(r.get_self())->table(&method_name).current();
	r.write_no_lang(*new(pool) VInt(pool, result));
}	}

static void _offset(Request& r, MethodParams* params) {	static void _offset(Request& r, const String& method_name, MethodParams *params) {
Table& table=GET_SELF(r, VTable).table();	Pool& pool=r.pool();
if(params->count()) {	Table& table=static_cast<VTable *>(r.get_self())->table(&method_name);
	if(params->size()) {
bool absolute=false;	bool absolute=false;
if(params->count()>1) {	if(params->size()>1) {
const String& whence=params->as_string(0, "whence must be string");	const String& whence=params->as_string(0, "whence must be string");
if(whence=="cur")	if(whence=="cur")
absolute=false;	absolute=false;
else if(whence=="set")	else if(whence=="set")
Line 281 static void _offset(Request& r, MethodPa	Line 294 static void _offset(Request& r, MethodPa
"is invalid whence, valid are 'cur' or 'set'");	"is invalid whence, valid are 'cur' or 'set'");
}	}

Value& offset_expr=params->as_junction(params->count()-1, "offset must be expression");	Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression");
table.offset(absolute, r.process_to_value(offset_expr).as_int());	table.offset(absolute, r.process_to_value(offset_expr).as_int());
} else	} else
r.write_no_lang(*new VInt(table.current()));	r.write_no_lang(*new(pool) VInt(pool, table.current()));
}	}

static void _menu(Request& r, MethodParams* params) {	static void _menu(Request& r, const String& method_name, MethodParams *params) {
Value& body_code=params->as_junction(0, "body must be code");	Value& body_code=params->as_junction(0, "body must be code");

Value* delim_maybe_code=params->count()>1?(*params)[1]:0;	Value *delim_maybe_code=params->size()>1?&params->get(1):0;

Table& table=GET_SELF(r, VTable).table();	Table& table=static_cast<VTable *>(r.get_self())->table(&method_name);
bool need_delim=false;	bool need_delim=false;
int saved_current=table.current();	int saved_current=table.current();
int size=table.count();	int size=table.size();
for(int row=0; row<size; row++) {	for(int row=0; row<size; row++) {
table.set_current(row);	table.set_current(row);

StringOrValue sv_processed=r.process(body_code);	StringOrValue sv_processed=r.process(body_code);
const String* s_processed=sv_processed.get_string();	const String *s_processed=sv_processed.get_string();
if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body	if(delim_maybe_code && s_processed && s_processed->size()) { // delimiter set and we have body
if(need_delim) // need delim & iteration produced string?	if(need_delim) // need delim & iteration produced string?
r.write_pass_lang(r.process(*delim_maybe_code));	r.write_pass_lang(r.process(*delim_maybe_code));
need_delim=true;	need_delim=true;
Line 312 static void _menu(Request& r, MethodPara	Line 325 static void _menu(Request& r, MethodPara
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
	enum Table2hash_distint { D_ILLEGAL, D_FIRST, D_TABLES };
struct Row_info {	struct Row_info {
Request *r;	Request *r;
Table *table;	Table *table;
Value* key_code;	Value *key_code;
size_t key_field;	int key_field;
Array<int>* value_fields;	Array *value_fields;
HashStringValue* hash;	Hash *hash;
bool distinct;	Table2hash_distint distinct;
size_t row;	int row;
};	};
#endif	#endif
static void table_row_to_hash(Table::element_type row, Row_info *info) {	static void table_row_to_hash(Array::Item value, void info) {
const String* key;	Array& row=static_cast<Array >(value);
if(info->key_code) {	Row_info& ri=static_cast<Row_info >(info);
info->table->set_current(info->row++); // change context row	Pool& pool=ri.table->pool();
StringOrValue sv_processed=info->r->process(*info->key_code);
	const String *key;
	if(ri.key_code) {
	ri.table->set_current(ri.row++); // change context row
	StringOrValue sv_processed=ri.r->process(*ri.key_code);
key=&sv_processed.as_string();	key=&sv_processed.as_string();
} else	} else
key=info->key_field<row->count()?row->get(info->key_field):0;	key=ri.key_field<row.size()?row.get_string(ri.key_field):0;

if(!key)	if(!key)
return; // ignore rows without key [too-short-record_array if-indexed]	return; // ignore rows without key [too-short-record_array if-indexed]

VHash* vhash=new VHash;	switch(ri.distinct) {
HashStringValue& hash=vhash->hash();	case D_ILLEGAL: case D_FIRST:
for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {	{
size_t value_field=i.next();	VHash& result=*new(pool) VHash(pool);
if(value_field<row->count())	Hash& hash=*result.get_hash(0);
hash.put(	for(int i=0; i<ri.value_fields->size(); i++) {
*info->table->columns()->get(value_field),	int value_field=ri.value_fields->get_int(i);
new VString(*row->get(value_field)));	if(value_field<row.size())
	hash.put(
	*ri.table->columns()->get_string(value_field),
	new(pool) VString(*row.get_string(value_field)));
	}

	if(ri.hash->put_dont_replace(*key, &result)) // put. existed?
	if(ri.distinct==D_ILLEGAL)
	throw Exception("parser.runtime",
	key,
	"duplicate key");
	}
	break;
	case D_TABLES:
	{
	VTable* vtable=(VTable)ri.hash->get(key); // put. table existed?
	Table* table;
	if(vtable)
	table=vtable->get_table();
	else {
	// no? creating table of same structure as source
	Table::Action_options table_options;
	table=new(pool) Table(pool, ri.table, table_options/no rows, just structure*/);
	ri.hash->put(*key, new(pool) VTable(pool, table));
	}
	*table+=&row;
	}
	break;
	default:
	throw Exception(0,
	0,
	"invalid distinct code (#%d)", ri.distinct);
}	}

if(info->hash->put_dont_replace(*key, vhash)) // put. existed?
if(!info->distinct)
throw Exception("parser.runtime",
key,
"duplicate key");
}	}
static void _hash(Request& r, MethodParams* params) {	static void _hash(Request& r, const String& method_name, MethodParams *params) {
Table& self_table=GET_SELF(r, VTable).table();	Pool& pool=r.pool();
VHash& result=*new VHash;	Table& self_table=static_cast<VTable *>(r.get_self())->table(&method_name);
if(Table::columns_type columns=self_table.columns())	Value& result=*new(pool) VHash(pool);
if(columns->count()>0) {	if(const Array *columns=self_table.columns())
bool distinct=false;	if(columns->size()>0) {
int param_index=params->count()-1;	Table2hash_distint distinct=D_ILLEGAL;
	int param_index=params->size()-1;
if(param_index>0) {	if(param_index>0) {
if(HashStringValue* options=	if(Hash *options=
params->as_no_junction(param_index, "param must not be code").get_hash()) {	params->as_no_junction(param_index, "param must not be code").get_hash(0)) {
--param_index;	--param_index;
int valid_options=0;	int valid_options=0;
if(Value* vdistinct=options->get(sql_distinct_name)) {	if(Value vdistinct_code=(Value )options->get(*sql_distinct_name)) {
valid_options++;	valid_options++;
distinct=r.process_to_value(*vdistinct).as_bool();	Value& vdistinct_value=r.process_to_value(*vdistinct_code);
	if(vdistinct_value.is_string()) {
	const String& sdistinct=*vdistinct_value.get_string();
	if(sdistinct=="tables")
	distinct=D_TABLES;
	else
	throw Exception("parser.runtime",
	&sdistinct,
	"must be 'tables' or true/false");
	} else
	distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
}	}
if(valid_options!=options->count())	if(valid_options!=options->size())
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"called with invalid option");	"called with invalid option");
}	}
}	}
if(param_index==2) // bad options param type	if(param_index==2) // bad options param type
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"options must be hash");	"options must be hash");

Array<int> value_fields;	Array value_fields(pool);
if(param_index>0) {	if(param_index>0) {
	if(distinct!=D_ILLEGAL && distinct!=D_FIRST)
	throw Exception("parser.runtime",
	0,
	"in distinct[tables] mode you may not specify value field(s)");
Value& value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");	Value& value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");
if(value_fields_param.is_string()) {	if(value_fields_param.is_string()) {
value_fields+=self_table.column_name2index(	value_fields+=self_table.column_name2index(value_fields_param.as_string(), true);
*value_fields_param.get_string(), true);	} else if(Table *value_fields_table=value_fields_param.get_table()) {
} else if(Table* value_fields_table=value_fields_param.get_table()) {	for(int i=0; i<value_fields_table->size(); i++) {
for(Array_iterator<Table::element_type> i(*value_fields_table);	const String& value_field_name=
i.has_next(); ) {	static_cast<Array >(value_fields_table->get(i))->get_string(0);
const String& value_field_name	value_fields+=self_table.column_name2index(value_field_name, true);
=*i.next()->get(0);
value_fields
+=self_table.column_name2index(value_field_name, true);
}	}
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"value field(s) must be string or self_table"	"value field(s) must be string or self_table"
);	);
} else { // by all columns, including key	} else { // by all columns, including key
for(size_t i=0; i<columns->count(); i++)	if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST))
value_fields+=i;	for(int i=0; i<columns->size(); i++)
	value_fields+=i;
}	}

	Value& key_param=params->get(0);
{	Value *key_code=key_param.get_junction()?&key_param:0;
Row_info info;	int key_field=key_code?-1
info.r=&r;	:self_table.column_name2index(key_param.as_string(), true);
info.table=&self_table;
Value* key_param=(*params)[0];	Row_info row_info={&r, &self_table,
info.key_code=key_param->get_junction()?key_param:0;	key_code, key_field, &value_fields,
info.key_field=info.key_code?-1	result.get_hash(0), distinct};
:self_table.column_name2index(key_param->as_string(), true);
info.value_fields=&value_fields;	int saved_current=self_table.current();
info.hash=&result.hash();	self_table.for_each(table_row_to_hash, &row_info);
info.distinct=distinct;	self_table.set_current(saved_current);
info.row=0;

int saved_current=self_table.current();
self_table.for_each(table_row_to_hash, &info);
self_table.set_current(saved_current);
}
}	}
r.write_no_lang(result);	r.write_no_lang(result);
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
struct Table_seq_item {	struct Table_seq_item {
ArrayString* row;	Array *row;
union {	union {
const char *c_str;	char *c_str;
double d;	double d;
} value;	} value;
};	};
Line 449 static int sort_cmp_double(const void *a	Line 500 static int sort_cmp_double(const void *a
else	else
return 0;	return 0;
}	}
static void _sort(Request& r, MethodParams* params) {	static void _sort(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();
Value& key_maker=params->as_junction(0, "key-maker must be code");	Value& key_maker=params->as_junction(0, "key-maker must be code");

bool reverse=params->count()>1/..[desc\|asc\|]/?	bool reverse=params->size()>1/..[desc\|asc\|]/?
reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":	reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
false; // default=asc	false; // default=asc

Table& old_table=GET_SELF(r, VTable).table();	Table& old_table=static_cast<VTable *>(r.get_self())->table(&method_name);
Table& new_table=*new Table(old_table.columns());	if(old_table.size()==0)
	return;

	Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns());

Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];	Table_seq_item seq=(Table_seq_item )pool.malloc(sizeof(Table_seq_item)*old_table.size());
int i;	int i;

// calculate key values	// calculate key values
bool key_values_are_strings=true;	bool key_values_are_strings=true;
int old_count=old_table.count();	for(i=0; i<old_table.size(); i++) {
for(i=0; i<old_count; i++) {
old_table.set_current(i);	old_table.set_current(i);
// calculate key value	// calculate key value
seq[i].row=old_table[i];	seq[i].row=(MethodParams *)old_table.get(i);
Value& value=r.process_to_value(key_maker).as_expr_result(true/return string as-is/);	Value& value=r.process_to_value(key_maker).as_expr_result(true/return string as-is*/);
if(i==0) // determining key values type by first one	if(i==0) // determining key values type by first one
key_values_are_strings=value.is_string();	key_values_are_strings=value.is_string();

Line 479 static void _sort(Request& r, MethodPara	Line 533 static void _sort(Request& r, MethodPara
seq[i].value.d=value.as_double();	seq[i].value.d=value.as_double();
}	}
// sort keys	// sort keys
_qsort(seq, old_count, sizeof(Table_seq_item),	_qsort(seq, old_table.size(), sizeof(Table_seq_item),
key_values_are_strings?sort_cmp_string:sort_cmp_double);	key_values_are_strings?sort_cmp_string:sort_cmp_double);

// reorder table as they require in 'seq'	// reorder table as they require in 'seq'
for(i=0; i<old_count; i++)	for(i=0; i<old_table.size(); i++)
new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);	new_table+=seq[reverse?old_table.size()-1-i:i].row;

delete[] seq;

// replace any previous table value	// replace any previous table value
GET_SELF(r, VTable).set_table(new_table);	static_cast<VTable *>(r.get_self())->set_table(new_table);
}	}

static bool _locate_expression(Request& r, MethodParams* params) {	#ifndef DOXYGEN
if(params->count()>1)	struct Locate_expression_func_info {
throw Exception("parser.runtime",	Request* r;
0,	Value* expression_code;
"locate by expression has only one parameter - expression");	};
	#endif
	bool locate_expression_func(Table& self, void* ainfo) {
	Locate_expression_func_info& info=static_cast<Locate_expression_func_info>(ainfo);
	return info.r->process_to_value(*info.expression_code).as_bool();
	}
	static bool _locate_expression(Table& table, Table::Action_options o,
	Request& r, const String& method_name, MethodParams *params) {
	check_option_param(o.defined, method_name, params, 1,
	"locate by expression only has parameters: expression and, maybe, options");
Value& expression_code=params->as_junction(0, "must be expression");	Value& expression_code=params->as_junction(0, "must be expression");

Table& table=GET_SELF(r, VTable).table();	Locate_expression_func_info info={&r, &expression_code};
int saved_current=table.current();	return table.locate(locate_expression_func, &info, o);
int size=table.count();
for(int row=0; row<size; row++) {
table.set_current(row);

if(r.process_to_value(expression_code).as_bool())
return true;
}
table.set_current(saved_current);
return false;
}	}
static bool _locate_name_value(Request& r, MethodParams* params) {	static bool _locate_name_value(Table& table, Table::Action_options o,
if(params->count()>2)	Request& r, const String& method_name, MethodParams *params) {
throw Exception("parser.runtime",	check_option_param(o.defined, method_name, params, 2,
0,	"locate by locate by name has parameters: name, value and, maybe, options");
"locate by name and value has only two parameters - name and value");	const String& name=params->as_string(0, "column name must be string");
	const String& value=params->as_string(1, "value must be string");
Table& table=GET_SELF(r, VTable).table();
return table.locate(	return table.locate(name, value, o);
params->as_string(0, "column name must be string"),	}
params->as_string(1, "value must be string")	static void _locate(Request& r, const String& method_name, MethodParams *params) {
);	Pool& pool=r.pool();
}	Table& table=static_cast<VTable *>(r.get_self())->table(&method_name);
static void _locate(Request& r, MethodParams* params) {
bool result=(*params)[0]->get_junction()?	Table::Action_options o=get_action_options(r, method_name, params, table);
_locate_expression(r, params) :
_locate_name_value(r, params);	bool result=params->get(0).get_junction()?
r.write_no_lang(*new VBool(result));	_locate_expression(table, o, r, method_name, params) :
}	_locate_name_value(table, o, r, method_name, params);
	r.write_no_lang(*new(pool) VBool(pool, result));
static void _flip(Request& r, MethodParams* params) {	}
Table& old_table=GET_SELF(r, VTable).table();
Table& new_table=*new Table(old_table.columns());	static void _flip(Request& r, const String& method_name, MethodParams *params) {
if(size_t old_count=old_table.count())	Pool& pool=r.pool();
if(size_t old_cols=old_table[0]->count())	Table& old_table=static_cast<VTable *>(r.get_self())->table(&method_name);
for(size_t column=0; column<old_cols; column++) {	Table& new_table=new(pool) Table(pool, &method_name, 0/nameless*/);
Table::element_type new_row(new ArrayString(old_count));	if(old_table.size())
for(size_t i=0; i<old_count; i++) {	if(int old_cols=old_table.at(0).size())
Table::element_type old_row=old_table[i];	for(int column=0; column<old_cols; column++) {
*new_row+=column<old_row->count()?old_row->get(column):new String;	Array& new_row=*new(pool) Array(pool, old_table.size());
	for(int i=0; i<old_table.size(); i++) {
	const Array& old_row=old_table.at(i);
	new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool);
}	}
new_table+=new_row;	new_table+=&new_row;
}	}

r.write_no_lang(*new VTable(&new_table));	r.write_no_lang(*new(pool) VTable(pool, &new_table));
}	}

static void _append(Request& r, MethodParams* params) {	static void _append(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();
// data	// data
Temp_lang temp_lang(r, String::L_PASS_APPENDED);	Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
const String& string=r.process_to_string(params->as_junction(0, "body must be code"));	const String& string=
	r.process_to_string(params->as_junction(0, "body must be code"));

// parse cells	// parse cells
Table::element_type row=new ArrayString;	Array& row=*new(pool) Array(pool);
size_t pos_after=0;	string.split(row, 0, "\t", 1, String::UL_AS_IS);
string.split(*row, pos_after, "\t", String::L_AS_IS);

GET_SELF(r, VTable).table()+=row;	static_cast<VTable *>(r.get_self())->table(&method_name)+=&row;
}	}

static void _join(Request& r, MethodParams* params) {	static void _join(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();

Table* maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();	Table* maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
if(!maybe_src)	if(!maybe_src)
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"source is not a table");	"source is not a table");

Table& src=*maybe_src;	Table& src=*maybe_src;
Table& dest=GET_SELF(r, VTable).table();
	Table::Action_options o=get_action_options(r, method_name, params, src);
	check_option_param(o.defined, method_name, params, 1,
	"invalid extra parameter");

	Table& dest=static_cast<VTable *>(r.get_self())->table(&method_name);
if(&src == &dest)	if(&src == &dest)
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"source and destination are same table");	"source and destination are same table");

int offset, limit;	if(o.reverse)
get_copy_options(r, params, 1, src,	throw Exception(0,
offset, limit);	&method_name,
	"not implemented in this version, please upgrade");
if(Table::columns_type dest_columns=dest.columns()) { // dest is named	if(const Array *dest_columns=dest.columns()) { // dest is named
int saved_src_current=src.current();	int saved_src_current=src.current();
int m=src.count()-offset;	int m=src.size()-o.offset;
if(!limit \|\| limit>m)	if(!o.limit \|\| o.limit>m)
limit=m;	o.limit=m;
int end=offset+limit;	int end=o.offset+o.limit;
for(int src_row=offset; src_row<end; src_row++) {	for(int src_row=o.offset; src_row<end; src_row++) {
src.set_current(src_row);	src.set_current(src_row);
Table::element_type dest_row(new ArrayString(src.count()));	Array& dest_row=*new(pool) Array(pool);
for(size_t dest_column=0; dest_column<dest_columns->count(); dest_column++) {	for(int dest_column=0; dest_column<dest_columns->size(); dest_column++) {
const String* src_item=src.item(*dest_columns->get(dest_column));	const String src_item=src.item(dest_columns->get_string(dest_column));
*dest_row+=src_item?src_item:new String;	dest_row+=src_item?src_item:new(pool) String(pool);
}	}
dest+=dest_row;	dest+=&dest_row;
}	}
src.set_current(saved_src_current);	src.set_current(saved_src_current);
} else { // dest is nameless	} else { // dest is nameless
size_t src_count=src.count();	for(int src_row=0; src_row<src.size(); src_row++)
for(size_t src_row=0; src_row<src_count; src_row++)	dest+=&src.at(src_row);
dest+=src[src_row];
}	}
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {	class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
ArrayString& columns;
ArrayString* row;
public:	public:
Table* table;	Table_sql_event_handlers(Pool& apool, const String& amethod_name,
public:	const String& astatement_string, const char *astatement_cstr) :
Table_sql_event_handlers() :	pool(apool),
columns(*new ArrayString), row(0), table(0) {	method_name(amethod_name),
	statement_string(astatement_string),
	statement_cstr(astatement_cstr),
	columns(*new(pool) Array(pool)),
	row(0),
	table(0)
	{
}	}

bool add_column(SQL_Error& error, const char *str, size_t length) {	bool add_column(SQL_Error& error, void *ptr, size_t size) {
try {	try {
columns+=new String(str, length, true);	String *column=new(pool) String(pool);
	column->APPEND_TAINTED(
	(const char *)ptr, size,
	statement_cstr, 0);
	columns+=column;
return false;	return false;
} catch(...) {	} catch(...) {
error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");	error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
Line 624 public:	Line 692 public:
}	}
bool before_rows(SQL_Error& error) {	bool before_rows(SQL_Error& error) {
try {	try {
table=new Table(&columns);	table=new(pool) Table(pool, &method_name, &columns);
return false;	return false;
} catch(...) {	} catch(...) {
error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");	error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
Line 633 public:	Line 701 public:
}	}
bool add_row(SQL_Error& error) {	bool add_row(SQL_Error& error) {
try {	try {
*table+=row=new ArrayString;	(*table)+=(row=new(pool) Array(pool));
return false;	return false;
} catch(...) {	} catch(...) {
error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");	error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
return true;	return true;
}	}
}	}
bool add_row_cell(SQL_Error& error, const char* str, size_t length) {	bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {
try {	try {
String& cell=*new String;	String *cell=new(pool) String(pool);
if(length)	if(size)
cell.append_help_length(str, length, String::L_TAINTED);	cell->APPEND_TAINTED(
*row+=&cell;	(const char *)ptr, size,
	statement_cstr, table->size()-1);
	(*row)+=cell;
return false;	return false;
} catch(...) {	} catch(...) {
error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");	error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
return true;	return true;
}	}
}	}

	private:
	Pool& pool;
	const String& method_name;
	const String& statement_string; const char *statement_cstr;
	Array& columns;
	Array *row;
	public:
	Table *table;
};	};
#endif	#endif
static void _sql(Request& r, MethodParams* params) {	static void _sql(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();

Value& statement=params->as_junction(0, "statement must be code");	Value& statement=params->as_junction(0, "statement must be code");

ulong limit=0;	ulong limit=0;
ulong offset=0;	ulong offset=0;
if(params->count()>1) {	if(params->size()>1) {
Value& voptions=params->as_no_junction(1, "options must be hash, not code");	Value& voptions=params->as_no_junction(1, "options must be hash, not code");
if(!voptions.is_string())	if(!voptions.is_string())
if(HashStringValue* options=voptions.get_hash()) {	if(Hash *options=voptions.get_hash(&method_name)) {
int valid_options=0;	int valid_options=0;
if(Value* vlimit=options->get(sql_limit_name)) {	if(Value vlimit=(Value )options->get(*sql_limit_name)) {
valid_options++;	valid_options++;
limit=(ulong)r.process_to_value(*vlimit).as_double();	limit=(ulong)r.process_to_value(*vlimit).as_double();
}	}
if(Value* voffset=options->get(sql_offset_name)) {	if(Value voffset=(Value )options->get(*sql_offset_name)) {
valid_options++;	valid_options++;
offset=(ulong)r.process_to_value(*voffset).as_double();	offset=(ulong)r.process_to_value(*voffset).as_double();
}	}
if(valid_options!=options->count())	if(valid_options!=options->size())
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"called with invalid option");	"called with invalid option");
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&method_name,
"options must be hash");	"options must be hash");
}	}

Temp_lang temp_lang(r, String::L_SQL);	Temp_lang temp_lang(r, String::UL_SQL);
const String& statement_string=r.process_to_string(statement);	const String& statement_string=r.process_to_string(statement);
const char* statement_cstr=	const char *statement_cstr=
statement_string.cstr(String::L_UNSPECIFIED, r.connection());	statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name));
Table_sql_event_handlers handlers;	Table_sql_event_handlers handlers(pool, method_name,
	statement_string, statement_cstr);
#ifdef RESOURCES_DEBUG	#ifdef RESOURCES_DEBUG
struct timeval mt[2];	struct timeval mt[2];
//measure:before	//measure:before
gettimeofday(&mt[0],NULL);	gettimeofday(&mt[0],NULL);
#endif	#endif
r.connection()->query(	r.connection(&method_name)->query(
statement_cstr, offset, limit,	statement_cstr, offset, limit,
handlers,	handlers,
statement_string);	statement_string);
Line 708 static void _sql(Request& r, MethodParam	Line 790 static void _sql(Request& r, MethodParam
r.sql_request_time+=t[1]-t[0];	r.sql_request_time+=t[1]-t[0];
#endif	#endif

Table& result=	Table *result=
handlers.table?*handlers.table: // query resulted in table? return it	handlers.table?handlers.table: // query resulted in table? return it
*new Table(Table::columns_type(0)); // query returned no table, fake it	new(pool) Table(pool, &method_name, 0); // query returned no table, fake it

// replace any previous table value	// replace any previous table value
GET_SELF(r, VTable).set_table(result);	static_cast<VTable >(r.get_self())->set_table(result);
}	}

static void _columns(Request& r, MethodParams* ) {	static void _columns(Request& r, const String& method_name, MethodParams *) {
	Pool& pool=r.pool();

Table::columns_type result_columns(new ArrayString);	Array& result_columns=*new(pool) Array(pool);
*result_columns+=new String("column");	result_columns+=new(pool) String(pool, "column");
Table& result_table=*new Table(result_columns);	Table& result_table=*new(pool) Table(pool, &method_name, &result_columns);

Table& source_table=GET_SELF(r, VTable).table();	Table& source_table=static_cast<VTable *>(r.get_self())->table(&method_name);
if(Table::columns_type source_columns=source_table.columns()) {	if(const Array *source_columns=source_table.columns()) {
for(Array_iterator<const String> i(source_columns); i.has_next(); ) {	Array_iter i(*source_columns);
Table::element_type result_row(new ArrayString);	while(i.has_next()) {
*result_row+=i.next();	Array& result_row=*new(pool) Array(pool);
result_table+=result_row;	result_row+=i.next();
	result_table+=&result_row;
}	}
}	}

r.write_no_lang(*new VTable(&result_table));	r.write_no_lang(*new(pool) VTable(pool, &result_table));
}	}

static void _select(Request& r, MethodParams* params) {	static void _select(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();

Value& vcondition=params->as_junction(0, "condition must be expression");	Value& vcondition=params->as_junction(0, "condition must be expression");

Table& source_table=GET_SELF(r, VTable).table();	Table& source_table=static_cast<VTable *>(r.get_self())->table(&method_name);
Table& result_table=*new Table(source_table.columns());	Table& result_table=*new(pool) Table(pool,
	source_table.origin_string(),
	source_table.columns()
	);

int saved_current=source_table.current();	int saved_current=source_table.current();
int size=source_table.count();	int size=source_table.size();
for(int row=0; row<size; row++) {	for(int row=0; row<size; row++) {
source_table.set_current(row);	source_table.set_current(row);

Line 750 static void _select(Request& r, MethodPa	Line 839 static void _select(Request& r, MethodPa
false/don't intercept string/).as_bool();	false/don't intercept string/).as_bool();

if(condition) // ...condition is true=	if(condition) // ...condition is true=
result_table+=source_table[row]; // =green light to go to result	result_table+=&source_table.at(row); // =green light to go to result
}	}
source_table.set_current(saved_current);	source_table.set_current(saved_current);

r.write_no_lang(*new VTable(&result_table));	r.write_no_lang(*new(pool) VTable(pool, &result_table));
}	}

// constructor	// constructor

MTable::MTable(): Methoded("table") {	MTable::MTable(Pool& apool) : Methoded(apool, "table") {
// ^table::create{data}	// ^table::create{data}
// ^table::create[nameless]{data}	// ^table::create[nameless]{data}
// ^table::create[table]	// ^table::create[table]
Line 799 MTable::MTable(): Methoded("table") {	Line 888 MTable::MTable(): Methoded("table") {
add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);	add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);

// ^table.locate[field;value]	// ^table.locate[field;value]
add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);	add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);

// ^table.flip[]	// ^table.flip[]
add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);	add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
Line 821 MTable::MTable(): Methoded("table") {	Line 910 MTable::MTable(): Methoded("table") {
// ^table.select(expression) = table	// ^table.select(expression) = table
add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);	add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
}	}

	// global variable

	Methoded *table_class;

	// creator

	Methoded *MTable_create(Pool& pool) {
	return table_class=new(pool) MTable(pool);
	}

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Removed from v.1.172.2.14.2.23
changed lines
	Added in v.1.178