diff --git a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/LineLength.kt b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/LineLength.kt
index 92663333d4..dd1729f659 100644
--- a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/LineLength.kt
+++ b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/LineLength.kt
@@ -1,6 +1,5 @@
 package org.cqfn.diktat.ruleset.rules
 
-import com.pinterest.ktlint.core.KtLint.calculateLineColByOffset
 import com.pinterest.ktlint.core.Rule
 import com.pinterest.ktlint.core.ast.ElementType.BINARY_EXPRESSION
 import com.pinterest.ktlint.core.ast.ElementType.BLOCK
@@ -40,6 +39,7 @@ import org.cqfn.diktat.common.config.rules.getRuleConfig
 import org.cqfn.diktat.ruleset.constants.Warnings.LONG_LINE
 import org.cqfn.diktat.ruleset.utils.KotlinParser
 import org.cqfn.diktat.ruleset.utils.appendNewlineMergingWhiteSpace
+import org.cqfn.diktat.ruleset.utils.calculateLineColByOffset
 import org.cqfn.diktat.ruleset.utils.hasChildOfType
 import org.jetbrains.kotlin.com.intellij.lang.ASTNode
 import org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.CompositeElement
@@ -101,7 +101,7 @@ class LineLength(private val configRules: List<RulesConfig>) : Rule("line-length
                 val newNode = node.psi.findElementAt(offset + configuration.lineLength.toInt())!!.node
                 if ((newNode.elementType != KDOC_TEXT && newNode.elementType != KDOC_MARKDOWN_INLINE_LINK) ||
                         !isKDocValid(newNode)) {
-                    positionByOffset = calculateLineColByOffset(node.treeParent.text)
+                    positionByOffset = node.treeParent.calculateLineColByOffset()
                     val fixableType = isFixable(newNode, configuration)
                     LONG_LINE.warnAndFix(configRules, emitWarn, isFixMode,
                             "max line length ${configuration.lineLength}, but was ${it.length}",
@@ -394,12 +394,12 @@ class LineLength(private val configRules: List<RulesConfig>) : Rule("line-length
     }
 
     sealed class LongLineFixableCases {
-        object None: LongLineFixableCases()
-        class Comment(val node: ASTNode, val indexLastSpace: Int): LongLineFixableCases()
-        class Condition(val maximumLineLength: Long, val leftOffset: Int, val binList: MutableList<ASTNode>): LongLineFixableCases()
-        class Fun(val node: ASTNode): LongLineFixableCases()
-        class Property(val node: ASTNode, val indexLastSpace: Int, val text: String): LongLineFixableCases()
+        object None : LongLineFixableCases()
+        class Comment(val node: ASTNode, val indexLastSpace: Int) : LongLineFixableCases()
+        class Condition(val maximumLineLength: Long, val leftOffset: Int, val binList: MutableList<ASTNode>) : LongLineFixableCases()
+        class Fun(val node: ASTNode) : LongLineFixableCases()
+        class Property(val node: ASTNode, val indexLastSpace: Int, val text: String) : LongLineFixableCases()
         class PropertyWithTemplateEntry(val node: ASTNode, val maximumLineLength: Long,
-                                        val leftOffset: Int, val binList: MutableList<ASTNode>): LongLineFixableCases()
+                                        val leftOffset: Int, val binList: MutableList<ASTNode>) : LongLineFixableCases()
     }
 }
diff --git a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/AstNodeUtils.kt b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/AstNodeUtils.kt
index e9c7dc1485..92ada383bf 100644
--- a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/AstNodeUtils.kt
+++ b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/AstNodeUtils.kt
@@ -2,7 +2,6 @@ package org.cqfn.diktat.ruleset.utils
 
 import com.pinterest.ktlint.core.KtLint
 import com.pinterest.ktlint.core.ast.ElementType
-import com.pinterest.ktlint.core.ast.ElementType.ANNOTATION
 import com.pinterest.ktlint.core.ast.ElementType.ANNOTATION_ENTRY
 import com.pinterest.ktlint.core.ast.ElementType.CONST_KEYWORD
 import com.pinterest.ktlint.core.ast.ElementType.FILE
@@ -515,6 +514,10 @@ fun ASTNode.firstLineOfText(suffix: String = "") = text.lines().run { singleOrNu
 
 fun ASTNode.lastLineNumber(isFixMode: Boolean) = getLineNumber(isFixMode)?.plus(text.count { it == '\n' })
 
+fun ASTNode.calculateLineColByOffset(): (offset: Int) -> Pair<Int, Int> {
+    return buildPositionInTextLocator(text)
+}
+
 fun ASTNode.getFileName(): String = getUserData(KtLint.FILE_PATH_USER_DATA_KEY).let {
     require(it != null) { "File path is not present in user data" }
     it
diff --git a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/PositionInTextLocator.kt b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/PositionInTextLocator.kt
new file mode 100644
index 0000000000..0b126174c4
--- /dev/null
+++ b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/utils/PositionInTextLocator.kt
@@ -0,0 +1,71 @@
+package org.cqfn.diktat.ruleset.utils
+
+//fixme this code is copy-pasted from ktlint. Change it
+internal typealias LineAndColumn = Pair<Int, Int>
+
+/**
+ * Calculate position in text - line and column based on offset from the text start.
+ */
+internal fun buildPositionInTextLocator(text: String): (offset: Int) -> LineAndColumn {
+    val textLength = text.length
+    val identifierArray = ArrayList<Int>()
+    var endOfLineIndex = -1
+
+    do {
+        identifierArray.add(endOfLineIndex + 1)
+        endOfLineIndex = text.indexOf('\n', endOfLineIndex + 1)
+    } while (endOfLineIndex != -1)
+
+    identifierArray.add(textLength + if (identifierArray.last() == textLength) 1 else 0)
+
+    val segmentTree = SegmentTree(identifierArray.toIntArray())
+
+    return { offset ->
+        val line = segmentTree.indexOf(offset)
+        if (line != -1) {
+            val column = offset - segmentTree.get(line).left
+            line + 1 to column + 1
+        } else {
+            1 to 1
+        }
+    }
+}
+
+private class SegmentTree(sortedArray: IntArray) {
+
+    init {
+        require(sortedArray.size > 1) { "At least two data points are required" }
+        sortedArray.reduce { current, next ->
+            require(current <= next) { "Data points are not sorted (ASC)" }
+            next
+        }
+    }
+
+    private val segments: List<Segment> = sortedArray
+            .dropLast(1)
+            .mapIndexed { index: Int, element: Int ->
+                Segment(element, sortedArray[index + 1] - 1)
+            }
+
+    fun get(index: Int): Segment = segments[index]
+
+    fun indexOf(index: Int): Int = binarySearch(index, 0, segments.size - 1)
+
+    private fun binarySearch(compareElement: Int, left: Int, right: Int): Int = when {
+        left > right -> -1
+        else -> {
+            val index = left + (right - left) / 2
+            val midElement = segments[index]
+            if (compareElement < midElement.left) {
+                binarySearch(compareElement, left, index - 1)
+            } else {
+                if (midElement.right < compareElement) binarySearch(compareElement, index + 1, right) else index
+            }
+        }
+    }
+}
+
+private data class Segment(
+        val left: Int,
+        val right: Int
+)