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https://github.com/fadden/6502bench.git
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1373ffd8e3
The tool allows you to cut a piece out of a file by specifying an offset and a length. A pair of hex dumps helps you verify that the positions are correct. Also, minor cleanups elsewhere.
102 lines
3.9 KiB
C#
102 lines
3.9 KiB
C#
/*
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* Copyright 2018 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Diagnostics;
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namespace Asm65 {
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public class Number {
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/// <summary>
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/// Parses an integer in a variety of formats (hex, decimal, binary). We allow
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/// hex to be identified with a leading '$' as well as "0x".
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///
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/// Trim whitespace before calling here.
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/// </summary>
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/// <param name="str">String to parse.</param>
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/// <param name="val">Integer value of string.</param>
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/// <param name="intBase">What base the string was in (2, 10, or 16).</param>
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/// <returns>True if the parsing was successful.</returns>
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public static bool TryParseInt(string str, out int val, out int intBase) {
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if (string.IsNullOrEmpty(str)) {
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val = intBase = 0;
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return false;
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}
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if (str[0] == '$') {
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intBase = 16;
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str = str.Substring(1); // Convert functions don't like '$'
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} else if (str.Length > 2 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) {
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intBase = 16;
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} else if (str[0] == '%') {
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intBase = 2;
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str = str.Substring(1); // Convert functions don't like '%'
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} else {
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intBase = 10; // try it as decimal
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}
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try {
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val = Convert.ToInt32(str, intBase);
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//Debug.WriteLine("GOT " + val + " - " + intBase);
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} catch (Exception) {
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//Debug.WriteLine("TryParseInt failed on '" + str + "': " + ex.Message);
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val = 0;
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return false;
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}
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return true;
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}
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/// <summary>
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/// Parses a long integer in a variety of formats (hex, decimal, binary). We allow
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/// hex to be identified with a leading '$' as well as "0x".
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///
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/// Trim whitespace before calling here.
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/// </summary>
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/// <param name="str">String to parse.</param>
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/// <param name="val">Integer value of string.</param>
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/// <param name="intBase">What base the string was in (2, 10, or 16).</param>
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/// <returns>True if the parsing was successful.</returns>
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public static bool TryParseLong(string str, out long val, out int intBase) {
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if (string.IsNullOrEmpty(str)) {
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val = intBase = 0;
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return false;
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}
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if (str[0] == '$') {
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intBase = 16;
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str = str.Substring(1); // Convert functions don't like '$'
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} else if (str.Length > 2 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) {
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intBase = 16;
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} else if (str[0] == '%') {
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intBase = 2;
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str = str.Substring(1); // Convert functions don't like '%'
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} else {
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intBase = 10; // try it as decimal
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}
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try {
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val = Convert.ToInt64(str, intBase);
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//Debug.WriteLine("GOT " + val + " - " + intBase);
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} catch (Exception) {
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//Debug.WriteLine("TryParseInt failed on '" + str + "': " + ex.Message);
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val = 0;
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return false;
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}
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return true;
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}
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}
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}
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