--- parser3/src/main/pa_table.C	2001/01/30 13:43:43	1.7
+++ parser3/src/main/pa_table.C	2024/11/04 03:53:25	1.77
@@ -1,71 +1,120 @@
-/*
-  $Id: pa_table.C,v 1.7 2001/01/30 13:43:43 paf Exp $
-*/
+/** @file
+	Parser: table class.
 
-#include <stdlib.h>
+	Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com)
+	Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
+*/
 
 #include "pa_table.h"
-#include "pa_pool.h"
 
-Table::Table(Request& arequest, 
-			 char *afile, uint aline, 
-			 Array *acolumns, 
-			 int initial_rows) :
-	Array(arequest.pool(), initial_rows),
-	request(arequest),
-	fcurrent(0),
-	fcolumns(acolumns), 
-	name2number(arequest.pool(), false) {
-#ifndef NO_STRING_ORIGIN
-	forigin.file=afile;
-	forigin.line=aline;
-#endif
+volatile const char * IDENT_PA_TABLE_C="$Id: pa_table.C,v 1.77 2024/11/04 03:53:25 moko Exp $" IDENT_PA_TABLE_H;
+
+#include "pa_exception.h"
 
-	if(fcolumns)
-		for(int i=0; i<fcolumns->size(); i++) {
-			String name(pool);
-			name.APPEND(fcolumns->get_cstr(i), 0, 0);
-			name2number.put(name, i+1);
+Table::Table(columns_type acolumns, size_t initial_rows): Array<element_type>(initial_rows), fcurrent(0), fcolumns(acolumns), name2number(NULL){
+	column_names_init();
+}
+
+void Table::column_names_init(){
+	if(fcolumns){
+		name2number = new name2number_hash_class;
+		size_t number=1;
+		for(ArrayString::Iterator i(*fcolumns); i; ) {
+			const String& name=*i.next();
+			name2number->put(name, number++);
 		}
+	}
+}
+
+static void append_row(Table& src, Table* dest) {
+	Table::element_type src_row(src[src.current()]);
+	Table::element_type row(new ArrayString(src_row->count()));
+	row->append(*src_row);
+	*dest+=row;
+}
+
+Table::Table(const Table& src, Action_options& options) :
+	Array<element_type>(options.limit > src.count() ? src.count() : options.limit),
+
+	fcurrent(0),
+	fcolumns(src.fcolumns),
+	name2number(src.name2number) {
+
+	((Table &)src).table_for_each(append_row, this, options);
+}
+
+size_t Table::max_cells() const {
+	size_t result=0;
+	for(size_t i=0; i<count(); i++){
+		element_type row=get(i);
+		if(row->count()>result)
+			result=row->count();
+	}
+	return result;
 }
 
-const Array &Table::at(int index) {
-	if(index<0 || index>=size())
-		request.exception().raise(0, 0, 
-			0,
-			"table row index %d is out of range [0..%d]", 
-			index, size()-1);
-	
-	return *static_cast<const Array *>(get(index));
-}
-
-const char *Table::item(int index) {
-	const Array& row=at(fcurrent);
-	return row.get_cstr(index);
-}
-
-const char *Table::item(const String& column_name) {
-	int column_index;
-	if(fcolumns) {
-		int found_index=name2number.get_int(column_name);
-		if(found_index)
-			column_index=found_index-1;
-		else
-			request.exception().raise(0, 0,
-				&column_name, 
-				"column not found");
-	} else {
-		column_index=atoi(column_name.cstr());
-		const Array& row=at(fcurrent);
-		if(column_index<0 || column_index>=row.size())
-			return 0;
-		/*
-			request.exception().raise(0, 0,
-				&column_name, 
-				"table column index %d is out of range [0..%d]", 
-				column_index, row->size()-1);
-				*/
+int Table::column_name2index(const String& column_name, bool bark) const {
+	if(fcolumns) {// named
+		int result=name2number->get(column_name)-1; // -1 = column not found
+		if(bark && result<0)
+			throw Exception(PARSER_RUNTIME, &column_name, "column not found");
+		return result;
+	} else // nameless
+		return column_name.as_int();
+}
+
+const String* Table::item(size_t column) {
+	if(valid(fcurrent)) {
+		element_type row=get(fcurrent);
+		if(column<row->count()) // proper index?
+			return row->get(column);
+	}
+	return 0; // it's OK we don't have row|column, just return nothing
+}
+
+void Table::put_item(size_t column, const String* value) {
+	if(!valid(fcurrent)) {
+		throw Exception(PARSER_RUNTIME, 0, "invalid current row");
+	}
+	element_type row=get(fcurrent);
+	while(row->count()<=column){
+	    *row+=&String::Empty;
+	}
+	row->put(column, value);
+}
+
+void Table::remove_current(){
+	if(!valid(fcurrent)) {
+		throw Exception(PARSER_RUNTIME, 0, "invalid current row");
 	}
+	remove(fcurrent);
+	if(fcurrent==count() && count()>0){
+	    fcurrent--;
+	}
+}
+
+#ifndef DOXYGEN
+struct Locate_int_string_info {
+	int column;
+	const String* value;
+};
+#endif
+bool locate_int_string(Table& self, Locate_int_string_info* info) {
+	const String *item_value=self.item(info->column);
+	return item_value && *item_value==*info->value;
+}
+
+bool Table::locate(int column, const String& value, Table::Action_options& options) {
+	Locate_int_string_info info={column, &value};
+	return table_first_that(locate_int_string, &info, options);
+}
+
+bool Table::locate(const String& column, const String& value, Table::Action_options& options) {
+	return locate(column_name2index(column, true), value, options);
+}
 
-	return item(column_index);
+void Table::offset(bool absolute, int offset) {
+	// not +lcount, but "if either operand is unsigned, the other shall be converted to unsigned" C++ rule works here
+	if(size_t lcount=count())
+		fcurrent=((absolute?0:fcurrent)+offset+lcount)%lcount;
 }