Add m-esr52 at 52.6.0

1 files changed, 265 insertions, 0 deletions

diff --git a/intl/unicharutil/util/nsBidiUtils.h b/intl/unicharutil/util/nsBidiUtils.h
new file mode 100644
index 000000000..d30fef1bf
--- /dev/null
+++ b/intl/unicharutil/util/nsBidiUtils.h
@@ -0,0 +1,265 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsBidiUtils_h__
+#define nsBidiUtils_h__
+
+#include "nsStringGlue.h"
+
+   /**
+    *  Read ftp://ftp.unicode.org/Public/UNIDATA/ReadMe-Latest.txt
+    *  section BIDIRECTIONAL PROPERTIES
+    *  for the detailed definition of the following categories
+    *
+    *  The values here must match the equivalents in %bidicategorycode in
+    *  mozilla/intl/unicharutil/tools/genUnicodePropertyData.pl,
+    *  and must also match the values used by ICU's UCharDirection.
+    */
+
+enum nsCharType   { 
+  eCharType_LeftToRight              = 0, 
+  eCharType_RightToLeft              = 1, 
+  eCharType_EuropeanNumber           = 2,
+  eCharType_EuropeanNumberSeparator  = 3,
+  eCharType_EuropeanNumberTerminator = 4,
+  eCharType_ArabicNumber             = 5,
+  eCharType_CommonNumberSeparator    = 6,
+  eCharType_BlockSeparator           = 7,
+  eCharType_SegmentSeparator         = 8,
+  eCharType_WhiteSpaceNeutral        = 9, 
+  eCharType_OtherNeutral             = 10, 
+  eCharType_LeftToRightEmbedding     = 11,
+  eCharType_LeftToRightOverride      = 12,
+  eCharType_RightToLeftArabic        = 13,
+  eCharType_RightToLeftEmbedding     = 14,
+  eCharType_RightToLeftOverride      = 15,
+  eCharType_PopDirectionalFormat     = 16,
+  eCharType_DirNonSpacingMark        = 17,
+  eCharType_BoundaryNeutral          = 18,
+  eCharType_FirstStrongIsolate       = 19,
+  eCharType_LeftToRightIsolate       = 20,
+  eCharType_RightToLeftIsolate       = 21,
+  eCharType_PopDirectionalIsolate    = 22,
+  eCharType_CharTypeCount
+};
+
+/**
+ * This specifies the language directional property of a character set.
+ */
+typedef enum nsCharType nsCharType;
+
+/**
+ * Find the direction of an embedding level or paragraph level set by
+ * the Unicode Bidi Algorithm. (Even levels are left-to-right, odd
+ * levels right-to-left.
+ */
+#define IS_LEVEL_RTL(level) (((level) & 1) == 1)
+
+/**
+ * Check whether two bidi levels have the same parity and thus the same
+ * directionality
+ */
+#define IS_SAME_DIRECTION(level1, level2) (((level1 ^ level2) & 1) == 0)
+
+/**
+ * Convert from nsBidiLevel to nsBidiDirection
+ */
+#define DIRECTION_FROM_LEVEL(level) ((IS_LEVEL_RTL(level)) \
+   ? NSBIDI_RTL : NSBIDI_LTR)
+
+/**
+ * definitions of bidirection character types by category
+ */
+
+#define CHARTYPE_IS_RTL(val) ( ( (val) == eCharType_RightToLeft) || ( (val) == eCharType_RightToLeftArabic) )
+
+#define CHARTYPE_IS_WEAK(val) ( ( (val) == eCharType_EuropeanNumberSeparator)    \
+                           || ( (val) == eCharType_EuropeanNumberTerminator) \
+                           || ( ( (val) > eCharType_ArabicNumber) && ( (val) != eCharType_RightToLeftArabic) ) )
+
+  /**
+   * Inspects a Unichar, converting numbers to Arabic or Hindi forms and returning them
+   * @param aChar is the character
+   * @param aPrevCharArabic is true if the previous character in the string is an Arabic char
+   * @param aNumFlag specifies the conversion to perform:
+   *        IBMBIDI_NUMERAL_NOMINAL:      don't do any conversion
+   *        IBMBIDI_NUMERAL_HINDI:        convert to Hindi forms (Unicode 0660-0669)
+   *        IBMBIDI_NUMERAL_ARABIC:       convert to Arabic forms (Unicode 0030-0039)
+   *        IBMBIDI_NUMERAL_HINDICONTEXT: convert numbers in Arabic text to Hindi, otherwise to Arabic
+   * @return the converted Unichar
+   */
+  char16_t HandleNumberInChar(char16_t aChar, bool aPrevCharArabic, uint32_t aNumFlag);
+
+  /**
+   * Scan a Unichar string, converting numbers to Arabic or Hindi forms in place
+   * @param aBuffer is the string
+   * @param aSize is the size of aBuffer
+   * @param aNumFlag specifies the conversion to perform:
+   *        IBMBIDI_NUMERAL_NOMINAL:      don't do any conversion
+   *        IBMBIDI_NUMERAL_HINDI:        convert to Hindi forms (Unicode 0660-0669)
+   *        IBMBIDI_NUMERAL_ARABIC:       convert to Arabic forms (Unicode 0030-0039)
+   *        IBMBIDI_NUMERAL_HINDICONTEXT: convert numbers in Arabic text to Hindi, otherwise to Arabic
+   */
+  nsresult HandleNumbers(char16_t* aBuffer, uint32_t aSize, uint32_t  aNumFlag);
+
+  /**
+   * Give a UTF-32 codepoint
+   * return true if the codepoint is a Bidi control character (LRM, RLM, ALM;
+   * LRE, RLE, PDF, LRO, RLO; LRI, RLI, FSI, PDI).
+   * Return false, otherwise
+   */
+#define LRM_CHAR 0x200e
+#define RLM_CHAR 0x200f
+
+#define LRE_CHAR 0x202a
+#define RLE_CHAR 0x202b
+#define PDF_CHAR 0x202c
+#define LRO_CHAR 0x202d
+#define RLO_CHAR 0x202e
+
+#define LRI_CHAR 0x2066
+#define RLI_CHAR 0x2067
+#define FSI_CHAR 0x2068
+#define PDI_CHAR 0x2069
+
+#define ALM_CHAR 0x061C
+   inline bool IsBidiControl(uint32_t aChar) {
+     return ((LRE_CHAR <= aChar && aChar <= RLO_CHAR) ||
+             (LRI_CHAR <= aChar && aChar <= PDI_CHAR) ||
+             (aChar == ALM_CHAR) ||
+             (aChar & 0xfffffe) == LRM_CHAR);
+   }
+
+  /**
+   * Give a UTF-32 codepoint
+   * Return true if the codepoint is a Bidi control character that may result
+   * in RTL directionality and therefore needs to trigger bidi resolution;
+   * return false otherwise.
+   */
+   inline bool IsBidiControlRTL(uint32_t aChar) {
+     return aChar == RLM_CHAR ||
+            aChar == RLE_CHAR ||
+            aChar == RLO_CHAR ||
+            aChar == RLI_CHAR ||
+            aChar == ALM_CHAR;
+   }
+
+  /**
+   * Give an nsString.
+   * @return true if the string contains right-to-left characters
+   */
+   bool HasRTLChars(const nsAString& aString);
+
+// These values are shared with Preferences dialog
+//  ------------------
+//  If Pref values are to be changed
+//  in the XUL file of Prefs. the values
+//  Must be changed here too..
+//  ------------------
+//
+#define IBMBIDI_TEXTDIRECTION_STR       "bidi.direction"
+#define IBMBIDI_TEXTTYPE_STR            "bidi.texttype"
+#define IBMBIDI_NUMERAL_STR             "bidi.numeral"
+
+//  ------------------
+//  Text Direction
+//  ------------------
+//  bidi.direction
+#define IBMBIDI_TEXTDIRECTION_LTR     1 //  1 = directionLTRBidi *
+#define IBMBIDI_TEXTDIRECTION_RTL     2 //  2 = directionRTLBidi
+//  ------------------
+//  Text Type
+//  ------------------
+//  bidi.texttype
+#define IBMBIDI_TEXTTYPE_CHARSET      1 //  1 = charsettexttypeBidi *
+#define IBMBIDI_TEXTTYPE_LOGICAL      2 //  2 = logicaltexttypeBidi
+#define IBMBIDI_TEXTTYPE_VISUAL       3 //  3 = visualtexttypeBidi
+//  ------------------
+//  Numeral Style
+//  ------------------
+//  bidi.numeral
+#define IBMBIDI_NUMERAL_NOMINAL       0 //  0 = nominalnumeralBidi *
+#define IBMBIDI_NUMERAL_REGULAR       1 //  1 = regularcontextnumeralBidi
+#define IBMBIDI_NUMERAL_HINDICONTEXT  2 //  2 = hindicontextnumeralBidi
+#define IBMBIDI_NUMERAL_ARABIC        3 //  3 = arabicnumeralBidi
+#define IBMBIDI_NUMERAL_HINDI         4 //  4 = hindinumeralBidi
+#define IBMBIDI_NUMERAL_PERSIANCONTEXT 5 // 5 = persiancontextnumeralBidi
+#define IBMBIDI_NUMERAL_PERSIAN       6 //  6 = persiannumeralBidi
+
+#define IBMBIDI_DEFAULT_BIDI_OPTIONS              \
+        ((IBMBIDI_TEXTDIRECTION_LTR<<0)         | \
+         (IBMBIDI_TEXTTYPE_CHARSET<<4)          | \
+         (IBMBIDI_NUMERAL_NOMINAL<<8))
+
+#define GET_BIDI_OPTION_DIRECTION(bo) (((bo)>>0) & 0x0000000F) /* 4 bits for DIRECTION */
+#define GET_BIDI_OPTION_TEXTTYPE(bo) (((bo)>>4) & 0x0000000F) /* 4 bits for TEXTTYPE */
+#define GET_BIDI_OPTION_NUMERAL(bo) (((bo)>>8) & 0x0000000F) /* 4 bits for NUMERAL */
+
+#define SET_BIDI_OPTION_DIRECTION(bo, dir) {(bo)=((bo) & 0xFFFFFFF0)|(((dir)& 0x0000000F)<<0);}
+#define SET_BIDI_OPTION_TEXTTYPE(bo, tt) {(bo)=((bo) & 0xFFFFFF0F)|(((tt)& 0x0000000F)<<4);}
+#define SET_BIDI_OPTION_NUMERAL(bo, num) {(bo)=((bo) & 0xFFFFF0FF)|(((num)& 0x0000000F)<<8);}
+
+/* Constants related to the position of numerics in the codepage */
+#define START_HINDI_DIGITS              0x0660
+#define END_HINDI_DIGITS                0x0669
+#define START_ARABIC_DIGITS             0x0030
+#define END_ARABIC_DIGITS               0x0039
+#define START_FARSI_DIGITS              0x06f0
+#define END_FARSI_DIGITS                0x06f9
+#define IS_HINDI_DIGIT(u)   ( ( (u) >= START_HINDI_DIGITS )  && ( (u) <= END_HINDI_DIGITS ) )
+#define IS_ARABIC_DIGIT(u)  ( ( (u) >= START_ARABIC_DIGITS ) && ( (u) <= END_ARABIC_DIGITS ) )
+#define IS_FARSI_DIGIT(u)  ( ( (u) >= START_FARSI_DIGITS ) && ( (u) <= END_FARSI_DIGITS ) )
+/**
+ * Arabic numeric separator and numeric formatting characters:
+ *  U+0600;ARABIC NUMBER SIGN
+ *  U+0601;ARABIC SIGN SANAH
+ *  U+0602;ARABIC FOOTNOTE MARKER
+ *  U+0603;ARABIC SIGN SAFHA
+ *  U+066A;ARABIC PERCENT SIGN
+ *  U+066B;ARABIC DECIMAL SEPARATOR
+ *  U+066C;ARABIC THOUSANDS SEPARATOR
+ *  U+06DD;ARABIC END OF AYAH
+ */
+#define IS_ARABIC_SEPARATOR(u) ( ( /*(u) >= 0x0600 &&*/ (u) <= 0x0603 ) || \
+                                 ( (u) >= 0x066A && (u) <= 0x066C ) || \
+                                 ( (u) == 0x06DD ) )
+
+#define IS_BIDI_DIACRITIC(u) ( \
+  ( (u) >= 0x0591 && (u) <= 0x05A1) || ( (u) >= 0x05A3 && (u) <= 0x05B9) \
+    || ( (u) >= 0x05BB && (u) <= 0x05BD) || ( (u) == 0x05BF) || ( (u) == 0x05C1) \
+    || ( (u) == 0x05C2) || ( (u) == 0x05C4) \
+    || ( (u) >= 0x064B && (u) <= 0x0652) || ( (u) == 0x0670) \
+    || ( (u) >= 0x06D7 && (u) <= 0x06E4) || ( (u) == 0x06E7) || ( (u) == 0x06E8) \
+    || ( (u) >= 0x06EA && (u) <= 0x06ED) )
+
+#define IS_HEBREW_CHAR(c) (((0x0590 <= (c)) && ((c) <= 0x05FF)) || (((c) >= 0xfb1d) && ((c) <= 0xfb4f)))
+#define IS_ARABIC_CHAR(c) ( (0x0600 <= (c) && (c) <= 0x08FF) &&   \
+                            ( (c) <= 0x06ff ||                    \
+                              ((c) >= 0x0750 && (c) <= 0x077f) || \
+                              (c) >= 0x08a0 ) )
+#define IS_ARABIC_ALPHABETIC(c) (IS_ARABIC_CHAR(c) && \
+                                !(IS_HINDI_DIGIT(c) || IS_FARSI_DIGIT(c) || IS_ARABIC_SEPARATOR(c)))
+
+/**
+ * The codepoint ranges in the following macros are based on the blocks
+ *  allocated, or planned to be allocated, to right-to-left characters in the
+ *  BMP (Basic Multilingual Plane) and SMP (Supplementary Multilingual Plane)
+ *  according to
+ *  http://unicode.org/Public/UNIDATA/extracted/DerivedBidiClass.txt and
+ *  http://www.unicode.org/roadmaps/
+ */
+
+#define IS_IN_BMP_RTL_BLOCK(c) ((0x590 <= (c)) && ((c) <= 0x8ff))
+#define IS_RTL_PRESENTATION_FORM(c) (((0xfb1d <= (c)) && ((c) <= 0xfdff)) || \
+                                     ((0xfe70 <= (c)) && ((c) <= 0xfefc)))
+#define IS_IN_SMP_RTL_BLOCK(c) (((0x10800 <= (c)) && ((c) <= 0x10fff)) || \
+                                ((0x1e800 <= (c)) && ((c) <= 0x1eFFF)))
+#define UCS2_CHAR_IS_BIDI(c) ((IS_IN_BMP_RTL_BLOCK(c)) || \
+                              (IS_RTL_PRESENTATION_FORM(c)) || \
+                              (c) == 0xD802 || (c) == 0xD803)
+#define UTF32_CHAR_IS_BIDI(c)  ((IS_IN_BMP_RTL_BLOCK(c)) || \
+                               (IS_RTL_PRESENTATION_FORM(c)) || \
+                               (IS_IN_SMP_RTL_BLOCK(c)))
+#endif  /* nsBidiUtils_h__ */