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fix styling
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@hk1ll3r
hk1ll3r committed Jan 30, 2021
1 parent 3b76f0c commit 98d403f
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Showing 5 changed files with 173 additions and 113 deletions.
105 changes: 70 additions & 35 deletions Assets/RTLTMPro/Scripts/Runtime/GlyphFixer.cs
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Original file line number Diff line number Diff line change
@@ -1,8 +1,11 @@
using System.Collections.Generic;

namespace RTLTMPro {
public static class GlyphFixer {
public static Dictionary<char, char> EnglishToFarsiNumberMap = new Dictionary<char, char>() {
namespace RTLTMPro
{
public static class GlyphFixer
{
public static Dictionary<char, char> EnglishToFarsiNumberMap = new Dictionary<char, char>()
{
[(char)EnglishNumbers.Zero] = (char)FarsiNumbers.Zero,
[(char)EnglishNumbers.One] = (char)FarsiNumbers.One,
[(char)EnglishNumbers.Two] = (char)FarsiNumbers.Two,
Expand All @@ -15,7 +18,8 @@ public static class GlyphFixer {
[(char)EnglishNumbers.Nine] = (char)FarsiNumbers.Nine,
};

public static Dictionary<char, char> EnglishToHinduNumberMap = new Dictionary<char, char>() {
public static Dictionary<char, char> EnglishToHinduNumberMap = new Dictionary<char, char>()
{
[(char)EnglishNumbers.Zero] = (char)FarsiNumbers.Zero,
[(char)EnglishNumbers.One] = (char)FarsiNumbers.One,
[(char)EnglishNumbers.Two] = (char)FarsiNumbers.Two,
Expand All @@ -37,18 +41,22 @@ public static class GlyphFixer {
/// <param name="preserveNumbers"></param>
/// <param name="farsi"></param>
/// <returns></returns>
public static void Fix(FastStringBuilder input, FastStringBuilder output, bool preserveNumbers, bool farsi, bool fixTextTags) {
public static void Fix(FastStringBuilder input, FastStringBuilder output, bool preserveNumbers, bool farsi, bool fixTextTags)
{
FixYah(input, farsi);

output.SetValue(input);

for (int i = 0; i < input.Length; i++) {
for (int i = 0; i < input.Length; i++)
{
bool skipNext = false;
char iChar = input.Get(i);

// For special Lam Letter connections.
if (iChar == (char)GeneralLetters.Lam) {
if (i < input.Length - 1) {
if (iChar == (char)GeneralLetters.Lam)
{
if (i < input.Length - 1)
{
skipNext = HandleSpecialLam(input, output, i);
if (skipNext)
iChar = output.Get(i);
Expand All @@ -57,33 +65,42 @@ public static void Fix(FastStringBuilder input, FastStringBuilder output, bool p

// We don't want to fix tatweel or zwnj character
if (iChar == (int)GeneralLetters.ArabicTatweel ||
iChar == (int)GeneralLetters.ZeroWidthNoJoiner) {
iChar == (int)GeneralLetters.ZeroWidthNoJoiner)
{
continue;
}

if (TextUtils.IsRTLCharacter(iChar)) {
if (TextUtils.IsRTLCharacter(iChar))
{
char converted = GlyphTable.Convert(iChar);

if (IsMiddleLetter(input, i)) {
if (IsMiddleLetter(input, i))
{
output.Set(i, (char)(converted + 3));
} else if (IsFinishingLetter(input, i)) {
} else if (IsFinishingLetter(input, i))
{
output.Set(i, (char)(converted + 1));
} else if (IsLeadingLetter(input, i)) {
} else if (IsLeadingLetter(input, i))
{
output.Set(i, (char)(converted + 2));
}
}

// If this letter as Lam and special Lam-Alef connection was made, We want to skip the Alef
// (Lam-Alef occupies 1 space)
if (skipNext) {
if (skipNext)
{
i++;
}
}

if (!preserveNumbers) {
if (fixTextTags) {
if (!preserveNumbers)
{
if (fixTextTags)
{
FixNumbersOutsideOfTags(output, farsi);
} else {
} else
{
FixNumbers(output, farsi);
}
}
Expand All @@ -95,11 +112,15 @@ public static void Fix(FastStringBuilder input, FastStringBuilder output, bool p
/// <param name="text">Input to prepare</param>
/// <param name="farsi"></param>
/// <returns>Prepared input in char array</returns>
public static void FixYah(FastStringBuilder text, bool farsi) {
for (int i = 0; i < text.Length; i++) {
if (farsi && text.Get(i) == (int)GeneralLetters.Ya) {
public static void FixYah(FastStringBuilder text, bool farsi)
{
for (int i = 0; i < text.Length; i++)
{
if (farsi && text.Get(i) == (int)GeneralLetters.Ya)
{
text.Set(i, (char)GeneralLetters.PersianYa);
} else if (farsi == false && text.Get(i) == (int)GeneralLetters.PersianYa) {
} else if (farsi == false && text.Get(i) == (int)GeneralLetters.PersianYa)
{
text.Set(i, (char)GeneralLetters.Ya);
}
}
Expand All @@ -112,9 +133,11 @@ public static void FixYah(FastStringBuilder text, bool farsi) {
/// <param name="output"></param>
/// <param name="i">Index of Lam letter</param>
/// <returns><see langword="true" /> if special connection has been made.</returns>
private static bool HandleSpecialLam(FastStringBuilder input, FastStringBuilder output, int i) {
private static bool HandleSpecialLam(FastStringBuilder input, FastStringBuilder output, int i)
{
bool isFixed;
switch (input.Get(i + 1)) {
switch (input.Get(i + 1))
{
case (char)GeneralLetters.AlefMaksoor:
output.Set(i, (char)0xFEF7);
isFixed = true;
Expand All @@ -136,7 +159,8 @@ private static bool HandleSpecialLam(FastStringBuilder input, FastStringBuilder
break;
}

if (isFixed) {
if (isFixed)
{
output.Set(i + 1, (char)0xFFFF);
}

Expand All @@ -149,7 +173,8 @@ private static bool HandleSpecialLam(FastStringBuilder input, FastStringBuilder
/// <param name="text"></param>
/// <param name="farsi"></param>
/// <returns>Converted number</returns>
public static void FixNumbers(FastStringBuilder text, bool farsi) {
public static void FixNumbers(FastStringBuilder text, bool farsi)
{
text.Replace((char)EnglishNumbers.Zero, farsi ? (char)FarsiNumbers.Zero : (char)HinduNumbers.Zero);
text.Replace((char)EnglishNumbers.One, farsi ? (char)FarsiNumbers.One : (char)HinduNumbers.One);
text.Replace((char)EnglishNumbers.Two, farsi ? (char)FarsiNumbers.Two : (char)HinduNumbers.Two);
Expand All @@ -168,18 +193,24 @@ public static void FixNumbers(FastStringBuilder text, bool farsi) {
/// <param name="text"></param>
/// <param name="farsi"></param>
/// <returns>Text with converted numbers</returns>
public static void FixNumbersOutsideOfTags(FastStringBuilder text, bool farsi) {
public static void FixNumbersOutsideOfTags(FastStringBuilder text, bool farsi)
{
var englishDigits = new HashSet<char>(EnglishToFarsiNumberMap.Keys);
for (int i = 0; i < text.Length; i++) {
for (int i = 0; i < text.Length; i++)
{
var iChar = text.Get(i);
// skip valid tags
if (iChar == '<') {
if (iChar == '<')
{
bool sawValidTag = false;
for (int j = i + 1; j < text.Length; j++) {
for (int j = i + 1; j < text.Length; j++)
{
char jChar = text.Get(j);
if (jChar == ' ' || TextUtils.IsRTLCharacter(jChar)) {
if (jChar == ' ' || TextUtils.IsRTLCharacter(jChar))
{
break;
} else if (jChar == '>') {
} else if (jChar == '>')
{
i = j;
sawValidTag = true;
break;
Expand All @@ -189,7 +220,8 @@ public static void FixNumbersOutsideOfTags(FastStringBuilder text, bool farsi) {
if (sawValidTag) continue;
}

if (englishDigits.Contains(iChar)) {
if (englishDigits.Contains(iChar))
{
text.Set(i, farsi ? EnglishToFarsiNumberMap[iChar] : EnglishToHinduNumberMap[iChar]);
}
}
Expand All @@ -199,7 +231,8 @@ public static void FixNumbersOutsideOfTags(FastStringBuilder text, bool farsi) {
/// Is the letter at provided index a leading letter?
/// </summary>
/// <returns><see langword="true" /> if the letter is a leading letter</returns>
private static bool IsLeadingLetter(FastStringBuilder letters, int index) {
private static bool IsLeadingLetter(FastStringBuilder letters, int index)
{
var currentIndexLetter = letters.Get(index);

char previousIndexLetter = default;
Expand Down Expand Up @@ -282,7 +315,8 @@ private static bool IsLeadingLetter(FastStringBuilder letters, int index) {
/// Is the letter at provided index a finishing letter?
/// </summary>
/// <returns><see langword="true" /> if the letter is a finishing letter</returns>
private static bool IsFinishingLetter(FastStringBuilder letters, int index) {
private static bool IsFinishingLetter(FastStringBuilder letters, int index)
{
char currentIndexLetter = letters.Get(index);

char previousIndexLetter = default;
Expand Down Expand Up @@ -330,7 +364,8 @@ private static bool IsFinishingLetter(FastStringBuilder letters, int index) {
/// Is the letter at provided index a middle letter?
/// </summary>
/// <returns><see langword="true" /> if the letter is a middle letter</returns>
private static bool IsMiddleLetter(FastStringBuilder letters, int index) {
private static bool IsMiddleLetter(FastStringBuilder letters, int index)
{
var currentIndexLetter = letters.Get(index);

char previousIndexLetter = default;
Expand Down
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