Resolved most of lint warnings, code improvements

codeview/src/main/AndroidManifest.xml

@@ -2,7 +2,6 @@
  xmlns:android="http://schemas.android.com/apk/res/android">
 
  <application
- android:allowBackup="true"
  android:label="@string/app_name"
  android:supportsRtl="true">
 

codeview/src/main/java/io/github/kbiakov/codeview/highlight/CodeHighlighter.kt

@@ -13,47 +13,32 @@ import java.util.*
  */
 object CodeHighlighter {
 
- private val LT_BRACE = "<".toRegex()
- private const val LT_REGULAR = "&lt;"
- private const val LT_TMP = "^"
-
- private val parser = PrettifyParser()
-
  /**
  * Highlight code content.
  *
- * @param codeLanguage Programming language
- * @param rawSource Code source by one string
- * @param colorTheme Color theme (see below)
+ * @param language Programming language
+ * @param source Source code as single string
+ * @param theme Color theme (see below)
  * @return Highlighted code, string with necessary inserted color tags
  */
- fun highlight(codeLanguage: String, rawSource: String, colorTheme: ColorThemeData): String {
- val source = rawSource.escapeLT()
- val results = parser.parse(codeLanguage, source)
- val colorsMap = buildColorsMap(colorTheme)
- val highlighted = StringBuilder()
-
- results.forEach {
- val color = colorsMap.getColor(it)
- val content = parseContent(source, it)
- highlighted.append(content.withFontParams(color))
- }
- return highlighted.toString()
+ fun highlight(language: String, source: String, theme: ColorThemeData): String {
+ val colors = buildColorsMap(theme)
+
+ return PrettifyParser().parse(language, source)
+ .map { source highlight it applyFontParams colors[it] }
+ .reduce(String::plus)
  }
 
  // - Helpers
 
  /**
- * Parse user input by extracting highlighted content.
+ * Parse input by extracting highlighted content.
  *
- * @param codeContent Code content
  * @param result Syntax unit
- * @return Parsed content to highlight
+ * @return Content to highlight
  */
- private fun parseContent(codeContent: String, result: ParseResult): String {
- val length = result.offset + result.length
- val content = codeContent.substring(result.offset, length)
- return content.expandLT()
+ private infix fun String.highlight(result: ParseResult) = safeLT {
+ substring(result.offset, result.offset + result.length)
  }
 
  /**
@@ -62,7 +47,7 @@ object CodeHighlighter {
  * @param result Syntax unit
  * @return Color for syntax unit
  */
- private fun HashMap<String, String>.getColor(result: ParseResult) =
+ private operator fun HashMap<String, String>.get(result: ParseResult) =
  this[result.styleKeys[0]] ?: this["pln"]
 
  /**
@@ -71,31 +56,30 @@ object CodeHighlighter {
  * @param colorTheme Color theme
  * @return Colors map built from color theme
  */
- private fun buildColorsMap(colorTheme: ColorThemeData) =
- object : HashMap<String, String>() {
- init {
- val syntaxColors = colorTheme.syntaxColors
-
- put("typ", syntaxColors.type.hex())
- put("kwd", syntaxColors.keyword.hex())
- put("lit", syntaxColors.literal.hex())
- put("com", syntaxColors.comment.hex())
- put("str", syntaxColors.string.hex())
- put("pun", syntaxColors.punctuation.hex())
- put("pln", syntaxColors.plain.hex())
- put("tag", syntaxColors.tag.hex())
- put("dec", syntaxColors.declaration.hex())
- put("src", syntaxColors.plain.hex())
- put("atn", syntaxColors.attrName.hex())
- put("atv", syntaxColors.attrValue.hex())
- put("nocode", syntaxColors.plain.hex())
- }
- }
-
- // - Escaping/extracting "lower then" symbol
-
- private fun String.escapeLT() = replace(LT_BRACE, LT_TMP)
- private fun String.expandLT() = replace(LT_TMP, LT_REGULAR)
+ private fun buildColorsMap(theme: ColorThemeData): HashMap<String, String> {
+ fun color(body: SyntaxColors.() -> Int) =
+ theme.syntaxColors.let { body(it).hex() }
+ return hashMapOf(
+ "typ" to color { type },
+ "kwd" to color { keyword },
+ "lit" to color { literal },
+ "com" to color { comment },
+ "str" to color { string },
+ "pun" to color { punctuation },
+ "pln" to color { plain },
+ "tag" to color { tag },
+ "dec" to color { declaration },
+ "src" to color { plain },
+ "atn" to color { attrName },
+ "atv" to color { attrValue },
+ "nocode" to color { plain })
+ }
+
+ // - Escaping/extracting "less then" symbol
+
+ private fun String.safeLT(op: String.() -> String) = escapeLT().op().expandLT()
+ private fun String.escapeLT() = replace("<", "^")
+ private fun String.expandLT() = replace("^", "&lt;")
 }
 
 /**
@@ -222,8 +206,6 @@ enum class Font {
 
 // - Helpers
 
-const val transparent = "#00000000"
-
 /**
  * @return Converted hex int to color by adding alpha-channel
  */
@@ -242,50 +224,47 @@ fun Int.hex() = "#${Integer.toHexString(this)}"
  * @return Is value equals to found or not condition
  */
 fun Int.isFound() = this >= 0
-
 fun Int.notFound() = this == -1
 
 /**
  * Apply font params to string.
  *
- * @param color Color as formatter string
- * @return Formatted string
+ * @param color Color
+ * @return Parametrized string
  */
-fun String.withFontParams(color: String?): String {
- val parametrizedString = StringBuilder()
-
+infix fun String.applyFontParams(color: String?): String {
+ var parametrizedString = ""
  var idx = 0
  var newIdx = indexOf("\n")
 
  if (newIdx.notFound()) // covers expected tag coverage (within only one line)
- parametrizedString.append(inFontTag(color))
+ parametrizedString += inFontTag(color)
  else { // may contain multiple lines with line breaks
 
  // put tag on the borders (end & start of line, ..., end of tag)
  do { // until closing tag is reached
- val part = substring(idx .. newIdx - 1).inFontTag(color).plus("\n")
- parametrizedString.append(part)
+ parametrizedString += (substring(idx .. newIdx - 1) inFontTag color) + "\n"
 
  idx = newIdx + 1
  newIdx = indexOf("\n", idx)
  } while (newIdx.isFound())
 
  if (idx != indexOf("\n")) // if not replaced only once (for multiline tag coverage)
- parametrizedString.append(substring(idx).inFontTag(color))
+ parametrizedString += substring(idx) inFontTag color
  }
- return parametrizedString.toString()
+ return parametrizedString
 }
 
+/**
+ * @return String wrapped in font tag
+ */
+private infix fun String.inFontTag(color: String?) =
+ "<font color=\"$color\">${escLineBreakAtStart()}</font>"
+
 /**
  * @return String with escaped line break at start
  */
 fun String.escLineBreakAtStart() =
  if (startsWith("\n") && length >= 1)
  substring(1)
  else this
-
-/**
- * @return String surrounded by font tag
- */
-fun String.inFontTag(color: String?) =
- "<font color=\"$color\">${escLineBreakAtStart()}</font>"

codeview/src/main/java/io/github/kbiakov/codeview/views/LineDiffView.kt

@@ -15,15 +15,12 @@ import io.github.kbiakov.codeview.highlight.FontCache
  *
  * @author Kirill Biakov
  */
-class LineDiffView : RelativeLayout {
+class LineDiffView(context: Context) : RelativeLayout(context) {
 
  private val tvLineDiff: TextView
  private val tvLineContent: TextView
 
- /**
- * Default constructor.
- */
- constructor(context: Context) : super(context) {
+ init {
  val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
  inflater.inflate(R.layout.item_code_diff, this, true)
 
@@ -39,19 +36,16 @@ class LineDiffView : RelativeLayout {
  * @param model Diff model
  * @return Created line diff view
  */
- fun create(context: Context, model: DiffModel): LineDiffView {
- val diffView = LineDiffView(context)
- diffView.tvLineDiff.text = if (model.isAddition) "+" else "-"
- diffView.tvLineContent.text = model.content
- diffView.tvLineContent.typeface = FontCache.get(context).getTypeface(context)
+ fun create(context: Context, model: DiffModel) = LineDiffView(context).apply {
+ tvLineDiff.text = if (model.isAddition) "+" else "-"
+ tvLineContent.text = model.content
+ tvLineContent.typeface = FontCache.get(context).getTypeface(context)
 
- diffView.setBackgroundColor(ContextCompat.getColor(context,
+ setBackgroundColor(ContextCompat.getColor(context,
  if (model.isAddition)
  R.color.diff_add_background
  else
  R.color.diff_del_background))
-
- return diffView
  }
  }
 }

codeview/src/main/res/layout/item_code_diff.xml

@@ -9,20 +9,19 @@
  android:layout_width="@dimen/line_num_width"
  android:layout_height="@dimen/line_height"
  android:gravity="center"
- android:fontFamily="monospace"
  android:textSize="@dimen/line_text_size"
  android:text="@string/stub_line_num"/>
 
  <TextView
  android:id="@+id/tv_line_content"
  android:layout_width="wrap_content"
  android:layout_height="@dimen/line_height"
- android:layout_marginLeft="16dp"
- android:layout_marginRight="16dp"
+ android:layout_marginLeft="@dimen/default_margin"
+ android:layout_marginRight="@dimen/default_margin"
+ android:layout_toEndOf="@+id/tv_line_diff"
  android:layout_toRightOf="@+id/tv_line_diff"
  android:gravity="center_vertical"
- android:fontFamily="monospace"
- android:singleLine="true"
+ android:maxLines="1"
  android:textSize="@dimen/line_text_size"
  android:text="@string/stub_line_content"/>
 

codeview/src/main/res/layout/item_code_line.xml

@@ -17,8 +17,9 @@
  android:id="@+id/tv_line_content"
  android:layout_width="wrap_content"
  android:layout_height="match_parent"
- android:layout_marginLeft="16dp"
- android:layout_marginRight="16dp"
+ android:layout_marginLeft="@dimen/default_margin"
+ android:layout_marginRight="@dimen/default_margin"
+ android:layout_toEndOf="@+id/tv_line_num"
  android:layout_toRightOf="@+id/tv_line_num"
  android:gravity="center_vertical"
  android:maxLines="1"

codeview/src/main/res/layout/layout_code_view.xml

@@ -23,6 +23,7 @@
  android:id="@+id/shadow_right_border"
  android:layout_width="@dimen/shadow_width"
  android:layout_height="match_parent"
+ android:layout_alignParentEnd="true"
  android:layout_alignParentRight="true"/>
 
  <LinearLayout

codeview/src/main/res/values/colors.xml

@@ -1,11 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
- <color name="code_num">#99a8b7</color>
- <color name="code_num_background">#f2f2f6</color>
- <color name="code_content">#2c2d30</color>
- <color name="code_content_background">#e9edf4</color>
- <color name="note">#4c5d6e</color>
-
  <color name="diff_add_background">#EAFFEA</color>
  <color name="diff_del_background">#FFECEC</color>
 </resources>

codeview/src/main/res/values/dimens.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+ <dimen name="default_margin">16dp</dimen>
  <dimen name="line_num_width">32dp</dimen>
  <dimen name="line_height">24dp</dimen>
  <dimen name="line_border_height">4dp</dimen>

example/build.gradle

@@ -18,8 +18,8 @@ android {
  proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  }
  }
- sourceSets {
- main.java.srcDirs += 'src/main/kotlin'
+ lintOptions {
+ abortOnError false
  }
 }
 

example/src/main/AndroidManifest.xml

@@ -4,7 +4,6 @@
 
  <application
  android:name=".BaseApplication"
- android:allowBackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
  android:supportsRtl="true"
@@ -19,4 +18,4 @@
 
  </application>
 
-</manifest>
+</manifest>