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improved paragraph shifting function

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and added test.
This commit is contained in:
Vishal
2022-09-11 17:17:25 +05:30
parent f24e5adec3
commit fd65725c0a
4 changed files with 163 additions and 48 deletions
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112
lib/event_ds.dart
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@@ -370,7 +370,7 @@ class EventData {
temp = temp + "$idDateLikes";
}
//temp = temp + " |$idDateLikes";
String contentShifted = makeParagraphAtDepth( temp, gSpacesPerDepth * depth + effectiveNameFieldLen);
String contentShifted = makeParagraphAtDepth( temp, gSpacesPerDepth * depth + effectiveNameFieldLen);
strToPrint += getStrInColor(contentShifted + "\n", commentColor);
stdout.write(strToPrint);
@@ -378,8 +378,6 @@ class EventData {
String getAsLine({int len = 20}) {
String contentToPrint = evaluatedContent.isEmpty? content: evaluatedContent;
//print("$contentToPrint|");
//print("len = ${contentToPrint.length}");
if( len == 0 || len > contentToPrint.length) {
len = contentToPrint.length;
}
@@ -391,7 +389,6 @@ class EventData {
int strWidth = 40;
String paddedStrToPrint = strToPrint.padLeft(strWidth);
//print("\n$paddedStrToPrint");
paddedStrToPrint = paddedStrToPrint.substring(0, strWidth);
if( isNotification) {
@@ -809,53 +806,82 @@ String getNumDashes(int num, [String dashType = "-"]) {
return s;
}
String makeParagraphAtDepth3(String s, int depthInSpaces) {
String newString = "";
String spacesString = getNumSpaces(depthInSpaces + gNumLeftMarginSpaces);
int lenPerLine = gTextWidth - depthInSpaces;
List<String> lines = s.split("\n");
lines.forEach((line) {
newString += line.replaceAll("\n", "\n" + spacesString );
});
return newString;
}
// make a paragraph of s that starts at numSpaces ( from screen left), and does not extend beyond gTextWidth+gNumLeftMarginSpaces. break it, or add
// a newline if it goes beyond gTextWidth + gNumLeftMarginSpaces
String makeParagraphAtDepth(String s, int numSpaces) {
String makeParagraphAtDepth(String s, int depthInSpaces) {
String newString = "";
int numCharsInCurLine = 0;
String spacesString = getNumSpaces(numSpaces + gNumLeftMarginSpaces);
String spacesString = getNumSpaces(depthInSpaces + gNumLeftMarginSpaces);
for(int i = 0; i < s.length; i++) {
if( s[i] == '\n') {
newString += "\n";
newString += spacesString;
numCharsInCurLine = 0;
} else {
if( numCharsInCurLine >= (gTextWidth - numSpaces)) {
if( i > 1 && !isWordSeparater(s[i])) {
// go back in output string and readjust it if needed
const int lookForSpace = 6;
bool foundSpace = false;
for(int j = 0; j < min(newString.length, lookForSpace); j++) {
if( newString[newString.length-1-j] == " ") {
foundSpace = true;
String charsInNextLine = "";
charsInNextLine = newString.substring(newString.length-j, newString.length);
String temp = newString.substring(0, newString.length-j) + "\n" + spacesString + charsInNextLine;
newString = temp;
numCharsInCurLine = charsInNextLine.length;
break;
}
}
if(!foundSpace) {
newString += "\n";
newString += spacesString;
numCharsInCurLine = 0;
}
} else {
newString += "\n";
newString += spacesString;
numCharsInCurLine = 0;
}
}
newString += s[i];
}
numCharsInCurLine++;
int lenPerLine = gTextWidth - depthInSpaces;
for(int startIndex = 0; startIndex < s.length; ) {
List listCulledLine = getLineWithMaxLen(s, startIndex, lenPerLine, spacesString);
String line = listCulledLine[0];
int lenReturned = listCulledLine[1] as int;
//print("returned len = $lenReturned");
if( line.length == 0 || lenReturned == 0) break;
newString += line;
startIndex += lenReturned;
}
return newString;
}
// returns from string[startIndex:] the first len number of chars. no newline is added.
List getLineWithMaxLen(String s, int startIndex, int len, String spacesString) {
//print("====================in getLineWithMaxlen. strlen = ${s.length} startIndex = $startIndex len = $len ");
if( startIndex >= s.length)
return ["", 0];
String line = "";
// if length required is greater than the length of string remaing, return whatever remains
//if( len > (s.length - startIndex))
// return [s.substring(startIndex), s.length - startIndex];
int numCharsInLine = 0;
int i = startIndex;
for(; i < startIndex + len && i < s.length; i++) {
line += s[i];
numCharsInLine ++;
if( s[i] == "\n") {
//print(" found newline. also inserting spacesString");
i++;
numCharsInLine = 0;
line += spacesString;
break;
}
}
if( numCharsInLine > len || (numCharsInLine == len && s.length > startIndex + numCharsInLine)) {
//print(" line longer than $len at $numCharsInLine. also inserting spacesString");
line += "\n";
line += spacesString;
}
//print(" returning with inserted: ${i - startIndex}");
//print(" returning: |$line|");
return [line, i - startIndex];
}
bool nonEnglish(String str) {
bool result = false;
return result;