mirror of
https://github.com/Such-Software/hash-wallet.git
synced 2026-10-18 05:51:34 +02:00
88 lines
3.1 KiB
Dart
88 lines
3.1 KiB
Dart
import 'dart:math';
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import 'package:flutter/foundation.dart';
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void printV(dynamic content) {
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CustomTrace programInfo = CustomTrace(StackTrace.current);
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print("${programInfo.fileName}#${programInfo.lineNumber}:${programInfo.columnNumber} ${programInfo.callerFunctionName}: $content");
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}
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// https://stackoverflow.com/a/59386101
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class CustomTrace {
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final StackTrace _trace;
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String? fileName;
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String? functionName;
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String? callerFunctionName;
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int? lineNumber;
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int? columnNumber;
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CustomTrace(this._trace) {
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try {
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_parseTrace();
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} catch (e) {
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if (kDebugMode) print("Unable to parse trace (printV): $e");
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}
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}
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String _getFunctionNameFromFrame(String frame) {
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/* Just giving another nickname to the frame */
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var currentTrace = frame;
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/* To get rid off the #number thing, get the index of the first whitespace */
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var indexOfWhiteSpace = currentTrace.indexOf(' ');
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/* Create a substring from the first whitespace index till the end of the string */
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var subStr = currentTrace.substring(max(0, indexOfWhiteSpace));
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/* Grab the function name using reg expr */
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var indexOfFunction = subStr.indexOf(RegExp(r'[A-Za-z0-9_]'));
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/* Create a new substring from the function name index till the end of string */
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subStr = subStr.substring(indexOfFunction);
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indexOfWhiteSpace = subStr.indexOf(RegExp(r'[ .]'));
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/* Create a new substring from start to the first index of a whitespace. This substring gives us the function name */
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subStr = subStr.substring(0, max(0, indexOfWhiteSpace));
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return subStr;
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}
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void _parseTrace() {
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/* The trace comes with multiple lines of strings, (each line is also known as a frame), so split the trace's string by lines to get all the frames */
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var frames = this._trace.toString().split("\n");
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/* The first frame is the current function */
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this.functionName = _getFunctionNameFromFrame(frames[0]);
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/* The second frame is the caller function */
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this.callerFunctionName = _getFunctionNameFromFrame(frames[1]);
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/* The first frame has all the information we need */
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var traceString = frames[1];
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/* Search through the string and find the index of the file name by looking for the '.dart' regex */
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var indexOfFileName = traceString.indexOf(RegExp(r'[/A-Za-z_]+.dart'), 1); // 1 to offest and not print the printV function name
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var fileInfo = traceString.substring(max(0, indexOfFileName));
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var listOfInfos = fileInfo.split(":");
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/* Splitting fileInfo by the character ":" separates the file name, the line number and the column counter nicely.
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Example: main.dart:5:12
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To get the file name, we split with ":" and get the first index
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To get the line number, we would have to get the second index
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To get the column number, we would have to get the third index
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*/
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try {
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this.fileName = listOfInfos[0];
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this.lineNumber = int.tryParse(listOfInfos[1]);
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var columnStr = listOfInfos[2];
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columnStr = columnStr.replaceFirst(")", "");
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this.columnNumber = int.tryParse(columnStr);
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} catch (e) {
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if (kDebugMode) print("Unable to parse trace (printV): $e");
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}
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}
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}
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