parser3/src/classes/string.C - diff

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Diff for /parser3/src/classes/string.C between versions 1.53 and 1.78

version 1.53, 2001/05/21 16:38:46	version 1.78, 2001/10/09 07:06:00
Line 2	Line 2
Parser: @b string parser class.	Parser: @b string parser class.

Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)	Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)

Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)

$Id$	$Id$
Line 16	Line 15
#include "pa_vbool.h"	#include "pa_vbool.h"
#include "pa_string.h"	#include "pa_string.h"
#include "pa_sql_connection.h"	#include "pa_sql_connection.h"
	#include "pa_dictionary.h"

// defines	// defines

Line 24	Line 24
// class	// class

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

public:	public:
MString(Pool& pool);	MString(Pool& pool);
public: // Methoded	public: // Methoded
Line 42 static void _length(Request& r, const St	Line 39 static void _length(Request& r, const St
r.write_no_lang(result);	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();	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, "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);	result.set_name(method_name);
r.write_no_lang(result);	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();	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, "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);	result.set_name(method_name);
r.write_no_lang(result);	r.write_no_lang(result);
}	}
Line 59 static void _double(Request& r, const St	Line 92 static void _double(Request& r, const St
/not static/void _string_format(Request& r, const String& method_name, MethodParams *params) {	/not static/void _string_format(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	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);	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(), 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) {	static void _left(Request& r, const String&, MethodParams *params) {
Pool& pool=r.pool();	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<VString >(r.self)->get_string();	const String& string=static_cast<VString >(r.self)->get_string();
r.write_assign_lang(*new(pool) VString(string.mid(0, n)));	r.write_assign_lang(*new(pool) VString(string.mid(0, n)));
Line 79 static void _left(Request& r, const Stri	Line 116 static void _left(Request& r, const Stri
static void _right(Request& r, const String&, MethodParams *params) {	static void _right(Request& r, const String&, MethodParams *params) {
Pool& pool=r.pool();	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<VString >(r.self)->get_string();	const String& string=static_cast<VString >(r.self)->get_string();
r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));	r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));
Line 88 static void _right(Request& r, const Str	Line 125 static void _right(Request& r, const Str
static void _mid(Request& r, const String&, MethodParams *params) {	static void _mid(Request& r, const String&, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();

size_t p=(size_t)r.process(params->get(0)).as_double();	size_t p=(size_t)params->as_int(0, "p must be int", r);
size_t n=(size_t)r.process(params->get(1)).as_double();	size_t n=(size_t)params->as_int(1, "n must be int", r);

const String& string=static_cast<VString >(r.self)->get_string();	const String& string=static_cast<VString >(r.self)->get_string();
r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));	r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));
Line 98 static void _mid(Request& r, const Strin	Line 135 static void _mid(Request& r, const Strin
static void _pos(Request& r, const String& method_name, MethodParams *params) {	static void _pos(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	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<VString >(r.self)->get_string();	const String& string=static_cast<VString >(r.self)->get_string();
r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));	r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));
Line 107 static void _pos(Request& r, const Strin	Line 144 static void _pos(Request& r, const Strin
static void split_list(Request& r, const String& method_name, MethodParams *params,	static void split_list(Request& r, const String& method_name, MethodParams *params,
const String& string,	const String& string,
Array& result) {	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());	string.split(result, 0, delim_value.as_string());
}	}
Line 116 static void _lsplit(Request& r, const St	Line 153 static void _lsplit(Request& r, const St
Pool& pool=r.pool();	Pool& pool=r.pool();
const String& string=static_cast<VString >(r.self)->get_string();	const String& string=static_cast<VString >(r.self)->get_string();

Array& row=*new(pool) Array(pool);	Array pieces(pool);
split_list(r, method_name, params, string, row);	split_list(r, method_name, params, string, pieces);

Table& table=*new(pool) Table(pool, &string,	Array& columns=*new(pool) Array(pool);
0/nameless/, 1/row preallocate(and only)/);	columns+=new(pool) String(pool, "piece");
table+=&row;

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

Line 130 static void _rsplit(Request& r, const St	Line 174 static void _rsplit(Request& r, const St
Pool& pool=r.pool();	Pool& pool=r.pool();
const String& string=static_cast<VString >(r.self)->get_string();	const String& string=static_cast<VString >(r.self)->get_string();

Array list(pool);	Array pieces(pool);
split_list(r, method_name, params, string, list);	split_list(r, method_name, params, string, pieces);

Array& row=*new(pool) Array(pool);	Array& columns=*new(pool) Array(pool);
for(int i=list.size(); --i>=0; )	columns+=new(pool) String(pool, "piece");
row+=list.get(i);

Table& table=*new(pool) Table(pool, &string,	Table& table=*new(pool) Table(pool, &string,
0/nameless/, 1/row preallocate(and only)/);	&columns, pieces.size());
table+=&row;	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));	r.write_no_lang(*new(pool) VTable(pool, &table));
}	}
Line 149 static void search_action(Table& table,	Line 196 static void search_action(Table& table,
table+=row;	table+=row;
}	}

/// used by string: _match / replace_action	#ifndef DOXYGEN
struct Replace_action_info {	struct Replace_action_info {
Request request; const String origin;	Request request; const String origin;
const String src; String dest;	const String src; String dest;
Value *replacement_code;	Value *replacement_code;
const String *post_match;	const String *post_match;
};	};
	#endif
static void replace_action(Table& table, Array *row, int start, int finish,	static void replace_action(Table& table, Array *row, int start, int finish,
void *info) {	void *info) {
Replace_action_info& ai=static_cast<Replace_action_info >(info);	Replace_action_info& ai=static_cast<Replace_action_info >(info);
Line 173 static void replace_action(Table& table,	Line 221 static void replace_action(Table& table,
vtable.set_name(*ai.origin);	vtable.set_name(*ai.origin);

Junction *junction=ai.replacement_code->get_junction();	Junction *junction=ai.replacement_code->get_junction();
junction->rcontext=/*must be some way to get to	Value saved_match_var_value=junction->root->get_element(match_var_name);
outside world junction->root=*/&vtable;	junction->root->put_element(*match_var_name, &vtable);
Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false);	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->APPEND_CONST("(");
Line 194 static void _match(Request& r, const Str	Line 243 static void _match(Request& r, const Str
Pool& pool=r.pool();	Pool& pool=r.pool();
const String& src=static_cast<VString >(r.self)->get_string();	const String& src=static_cast<VString >(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=	const String *options=
params->size()>1?	params->size()>1?
&params->get_no_junction(1, "options must not be code").as_string():0;	&params->as_no_junction(1, "options must not be code").as_string():0;

Value *result;	Value *result;
Temp_lang temp_lang(r, String::UL_PASS_APPENDED);	Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
Table *table;	Table *table;
if(params->size()<3) { // search	if(params->size()<3) { // search
if(src.match(r.pcre_tables,	bool was_global;
	bool matched=src.match(r.pcre_tables(),
&method_name,	&method_name,
regexp.as_string(), options,	regexp.as_string(), options,
&table,	&table,
search_action, 0)) {	search_action, 0,
// matched	&was_global);
if(table->columns()->size()==3 && // just matched[3=pre/match/post], no substrings	// matched
table->size()==1) // just one row, not /g_lobal search	// not (just matched[3=pre/match/post], no substrings) or Global search
result=new(pool) VBool(pool, true);	if(table->columns()->size()>3 \|\| was_global)
else // table of pre/match/post+substrings	result=new(pool) VTable(pool, table); // table of pre/match/post+substrings
result=new(pool) VTable(pool, table);	else
} else // not matched [not global]	result=new(pool) VBool(pool, matched);
result=new(pool) VBool(pool, false);
} else { // replace	} 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);	String& dest=*new(pool) String(pool);
Replace_action_info replace_action_info={	Replace_action_info replace_action_info={
Line 227 static void _match(Request& r, const Str	Line 276 static void _match(Request& r, const Str
&replacement_code,	&replacement_code,
&src	&src
};	};
src.match(r.pcre_tables,	src.match(r.pcre_tables(),
&method_name,	&method_name,
r.process(regexp).as_string(), options,	r.process(regexp).as_string(), options,
&table,	&table,
Line 243 static void change_case(Request& r, cons	Line 292 static void change_case(Request& r, cons
Pool& pool=r.pool();	Pool& pool=r.pool();
const String& src=static_cast<VString >(r.self)->get_string();	const String& src=static_cast<VString >(r.self)->get_string();

r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables,	r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables(),
kind)));	kind)));
}	}
static void _upper(Request& r, const String& method_name, MethodParams *params) {	static void _upper(Request& r, const String& method_name, MethodParams *params) {
Line 253 static void _lower(Request& r, const Str	Line 302 static void _lower(Request& r, const Str
change_case(r, method_name, params, String::CC_LOWER);	change_case(r, method_name, params, String::CC_LOWER);
}	}

String& sql_result_string(Request& r, const String& method_name, MethodParams *params) {	#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();	Pool& pool=r.pool();

if(!r.connection)	if(!r.connection)
Line 261 String& sql_result_string(Request& r, co	Line 351 String& sql_result_string(Request& r, co
&method_name,	&method_name,
"without connect");	"without connect");

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

	ulong limit=0;
ulong offset=0;	ulong offset=0;
if(params->size()>1) {	if(params->size()>1) {
Value& offset_code=params->get_junction(1, "offset must be expression");	Value& voptions=params->as_no_junction(1, "options must be hash, not code");
offset=(ulong)r.process(offset_code).as_double();	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);	Temp_lang temp_lang(r, String::UL_SQL);
const String& statement_string=r.process(statement).as_string();	const String& statement_string=r.process(statement).as_string();
const char *statement_cstr=	const char *statement_cstr=
statement_string.cstr(String::UL_UNSPECIFIED, r.connection);	statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
unsigned int sql_column_count; SQL_Driver::Cell *sql_columns;	String_sql_event_handlers handlers(pool, statement_string, statement_cstr);
unsigned long sql_row_count; SQL_Driver::Cell **sql_rows;
bool need_rethrow=false; Exception rethrow_me;	bool need_rethrow=false; Exception rethrow_me;
PTRY {	PTRY {
r.connection->query(	r.connection->query(
statement_cstr, offset, 0,	statement_cstr, offset, limit,
&sql_column_count, &sql_columns,	handlers);
&sql_row_count, &sql_rows);
}	}
PCATCH(e) { // query problem	PCATCH(e) { // query problem
rethrow_me=e; need_rethrow=true;	rethrow_me=e; need_rethrow=true;
Line 291 String& sql_result_string(Request& r, co	Line 390 String& sql_result_string(Request& r, co
&statement_string, // setting more specific source [were url]	&statement_string, // setting more specific source [were url]
rethrow_me.comment());	rethrow_me.comment());

if(sql_column_count!=1)	if(!handlers.got_cell)
PTHROW(0, 0,	return 0; // no lines, caller should return second param[default value]
&statement_string,
"result must contain only one column");

if(sql_row_count!=1)
PTHROW(0, 0,
&statement_string,
"result must contain only one row");

String& result=*new(pool) String(pool);	return handlers.result;
SQL_Driver::Cell& cell=sql_rows[0][0];
result.APPEND_TAINTED(
(const char *)cell.ptr, cell.size,
statement_cstr, 0);

return result;
}	}

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

VString& result=*new(pool) VString(sql_result_string(r, method_name, params));	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);	result.set_name(method_name);
r.write_assign_lang(result);	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	// constructor

MString::MString(Pool& apool) : Methoded(apool) {	MString::MString(Pool& apool) : Methoded(apool) {
Line 328 MString::MString(Pool& apool) : Methoded	Line 448 MString::MString(Pool& apool) : Methoded
add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);	add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);

// ^string.int[]	// ^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[]	// ^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}	// ^string.format{format}
add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);	add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
Line 360 MString::MString(Pool& apool) : Methoded	Line 481 MString::MString(Pool& apool) : Methoded
// ^string.tolower[]	// ^string.tolower[]
add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);	add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);

// ^string:sql[query]	// ^sql[query]
// ^string:sql[query](offset)	// ^sql[query][$.limit(1) $.offset(2) $.default[n/a]]
add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);	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	// global variable

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Removed from v.1.53
changed lines
	Added in v.1.78