325 lines
8.1 KiB
C++
325 lines
8.1 KiB
C++
/***************************************************************************
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* Copyright (c) 2015 Eivind Kvedalen <eivind@kvedalen.name> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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#include <boost/regex.hpp>
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#include <cassert>
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#include <sstream>
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#include <string>
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#include <cmath>
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#include <regex>
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#endif
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#include <string_view>
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#include <Base/Exception.h>
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#include "Range.h"
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using namespace App;
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const int App::CellAddress::MAX_ROWS = 16384;
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const int App::CellAddress::MAX_COLUMNS = 26 * 26 + 26;
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namespace App {
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// From a given cell address the '$' must be at within the first
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// few characters
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bool maybeAbsolute(std::string_view address)
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{
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const int MAX_COLUMNS_LETTERS = 2;
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address = address.substr(0, MAX_COLUMNS_LETTERS + 1);
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return address.find("$") != std::string_view::npos;
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}
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}
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Range::Range(const char * range, bool normalize)
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{
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std::string from;
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std::string to;
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assert(range);
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if (!strchr(range, ':')) {
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from = range;
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to = range;
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}
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else {
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std::string s = range;
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from = s.substr(0, s.find(':'));
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to = s.substr(s.find(':') + 1);
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}
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CellAddress begin(from);
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CellAddress end(to);
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row_begin = begin.row();
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col_begin = begin.col();
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row_end = end.row();
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col_end = end.col();
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if (normalize) {
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this->normalize();
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}
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row_curr = row_begin;
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col_curr = col_begin;
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}
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Range::Range(int _row_begin, int _col_begin, int _row_end, int _col_end, bool normalize)
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: row_begin(_row_begin)
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, col_begin(_col_begin)
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, row_end(_row_end)
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, col_end(_col_end)
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{
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if (normalize) {
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this->normalize();
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}
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row_curr = row_begin;
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col_curr = col_begin;
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}
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Range::Range(const CellAddress &from, const CellAddress &to, bool normalize)
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: row_begin(from.row())
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, col_begin(from.col())
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, row_end(to.row())
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, col_end(to.col())
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{
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if (normalize) {
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this->normalize();
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}
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row_curr = row_begin;
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col_curr = col_begin;
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}
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void Range::normalize()
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{
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if (row_begin > row_end) {
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std::swap(row_begin, row_end);
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}
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if (col_begin > col_end) {
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std::swap(col_begin, col_end);
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}
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}
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bool Range::next()
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{
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if (row_curr < row_end) {
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row_curr++;
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return true;
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}
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if (col_curr < col_end) {
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if (row_curr == row_end + 1)
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return false;
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row_curr = row_begin;
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++col_curr;
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return true;
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}
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return false;
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}
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/**
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* @brief Decode a row specification into a 0-based integer.
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*
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* @param rowstr Row specified as a string, with "1" being the first row.
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*
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* @returns The row.
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*/
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int App::decodeRow(const std::string &rowstr, bool silent)
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{
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int row = validRow(rowstr);
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if (silent || row >= 0) {
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return row;
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}
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throw Base::IndexError("Invalid row specification.");
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}
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/**
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* Assumes well-formed input. A through ZZZ. 0-based output
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*/
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int columnStringToNum(const std::string &colstr) {
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double out {0};
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int pos {0};
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for (auto chr = colstr.crbegin(); chr != colstr.crend(); chr++){
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out += (*chr - 'A' + 1) * std::pow(26, pos++);
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}
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return static_cast<int>(out - 1);
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}
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/**
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* @brief Decode a column name string into a 0-based integer.
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*
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* @param colstr input string.
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*
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* @returns The column.
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*
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*/
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int App::decodeColumn( const std::string &colstr, bool silent )
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{
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if (validColumn(colstr)) {
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return columnStringToNum(colstr);
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}
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if (silent) {
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return -1;
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}
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throw Base::IndexError("Invalid column specification");
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}
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/**
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* @brief Determine whether a row specification is valid or not.
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*
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* @param rowstr Row specified as a string, with "1" being the first row.
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*
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* @returns 0 or positive on success, -1 on error.
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*/
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int App::validRow(const std::string &rowstr)
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{
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char * end;
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int i = strtol(rowstr.c_str(), &end, 10);
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if (i <=0 || i > CellAddress::MAX_ROWS || *end) {
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return -1;
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}
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return i - 1;
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}
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/**
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* @brief Determine if a string is a valid column specification.
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*
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* @param colstr input string.
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*
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* @returns true if valid, false if not.
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*
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*/
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bool App::validColumn( const std::string &colstr )
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{
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return boost::regex_match(colstr, boost::regex("[A-Z]{1,3}"));
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}
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/**
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* @brief Convert a string address into integer \a row and \a column.
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* row and col are 0-based.
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*
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* This function will throw an exception if the specified \a address is invalid.
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*
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* @param strAddress Address to parse.
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*
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*/
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App::CellAddress App::stringToAddress(const char * strAddress, bool silent)
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{
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assert(strAddress);
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static boost::regex e("(\\$?[A-Z]{1,2})(\\$?[0-9]{1,5})");
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boost::cmatch cm;
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if (boost::regex_match(strAddress, cm, e)) {
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bool absCol = (cm[1].first[0]=='$');
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std::string r,c;
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if (absCol) {
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c = std::string(cm[1].first+1,cm[1].second);
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}
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else {
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c = std::string(cm[1].first,cm[1].second);
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}
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bool absRow = (cm[2].first[0]=='$');
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if (absRow) {
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r = std::string(cm[2].first+1,cm[2].second);
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}
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else {
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r = std::string(cm[2].first,cm[2].second);
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}
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return CellAddress(decodeRow(r,silent), decodeColumn(c,silent), absRow, absCol);
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}
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else if (silent) {
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return CellAddress();
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}
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throw Base::RuntimeError("Invalid cell specifier.");
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}
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/**
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* @brief Convert given \a cell address into its string representation.
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*
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* @returns Address given as a string.
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*/
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std::string App::CellAddress::toString(Cell cell) const
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{
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std::stringstream s;
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Base::Flags<Cell> flags(cell);
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if (flags.testFlag(Cell::ShowColumn)) {
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if (_absCol && flags.testFlag(Cell::Absolute)) {
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s << '$';
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}
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if (col() < 26) {
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s << static_cast<char>('A' + col());
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}
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else {
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int colnum = col() - 26;
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s << static_cast<char>('A' + (colnum / 26));
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s << static_cast<char>('A' + (colnum % 26));
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}
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}
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if (flags.testFlag(Cell::ShowRow)) {
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if (_absRow && flags.testFlag(Cell::Absolute)) {
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s << '$';
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}
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s << (row() + 1);
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}
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return s.str();
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}
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/*!
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* \brief App::CellAddress::parseAbsoluteAddress
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* \param address
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* If the passed string is a valid and absolute cell address it will be assigned to this instance.
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* \return True if it's an absolute cell address and false otherwise
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*/
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bool App::CellAddress::parseAbsoluteAddress(const char *address) {
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if (maybeAbsolute(address)) {
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CellAddress addr = stringToAddress(address, true);
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if (addr.isValid()) {
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*this = addr;
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return true;
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}
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}
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return false;
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}
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