Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 388 insertions, 0 deletions

diff --git a/intl/lwbrk/rulebrk.c b/intl/lwbrk/rulebrk.c
new file mode 100644
index 0000000000..d7574b929f
--- /dev/null
+++ b/intl/lwbrk/rulebrk.c
@@ -0,0 +1,388 @@
+/* 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/. */
+#define TH_UNICODE
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+#include "th_char.h"
+#define th_isalpha(c) (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
+#define th_isspace(c) ((c) == ' ' || (c) == '\t')
+
+/*
+/////////////////////////////////////////////////
+// Thai character type array
+*/
+
+typedef unsigned short twb_t;
+extern const twb_t _TwbType[0x100 - 0xa0];
+
+/*
+// bit definition
+*/
+
+#define VRS 0x0001
+#define VRE 0x0002
+#define VRX 0x0004
+
+#define VRA 0x0008
+
+#define VLA 0x0010
+#define VLO 0x0020
+#define VLI 0x0040
+
+#define VC 0x0080
+
+#define CC 0x0100
+#define CS 0x0200
+
+#define C2 0x0400
+#define CHB 0x0800
+#define CHE 0x1000
+
+#define MT 0x2000
+/*
+//_#define me 0x2000
+*/
+#define M 0x4000
+
+#define T 0x8000
+
+#define VL (VLA | VLO | VLI)
+#define VR (VRS | VRE | VRX)
+#define NE (VL | VRS)
+#define NB (VR | M)
+#define V (VL | VR)
+#define CX (CC | CS)
+#define C (CX | VC)
+#define A (C | V | M)
+
+#define twbtype(c) (_TwbType[th_zcode(c)])
+
+#ifndef TRUE
+#  define TRUE 1
+#  define FALSE 0
+#endif
+#define RETURN(b) return (b)
+
+/*
+/////////////////////////////////////////////////
+*/
+
+int TrbWordBreakPos(const th_char* pstr, int left, const th_char* rstr,
+                    int right)
+/*                 const ThBreakIterator *it, const th_char **p)*/
+{
+  /*
+  //int left, right;
+  //const th_char *s = *p;
+  */
+  const th_char* lstr = pstr + left;
+  th_char _c[6];
+  twb_t _t[6];
+#define c(i) (_c[(i) + 3])
+#define t(i) (_t[(i) + 3])
+  int i, j;
+
+  /*
+  //left = s - it->begin;
+  */
+  if (left < 0) return -1;
+  /*
+  //right = (it->end == NULL) ? 4 : it->begin - s;
+  */
+  if (right < 1) return -1;
+
+  /*
+  // get c(0), t(0)
+  */
+  c(0) = rstr[0]; /* may be '\0' */
+  if (!th_isthai(c(0))) return -1;
+  t(0) = twbtype(c(0));
+  if (!(t(0) & A)) return -1;
+
+  /*
+  // get c(-1), t(-1)
+  */
+  if (left >= 1) {
+    c(-1) = lstr[-1];
+    if (!th_isthai(c(-1))) return 0;
+    t(-1) = twbtype(c(-1));
+    if (!(t(-1) & A)) return 0; /* handle punctuation marks here */
+  } else {
+    c(-1) = 0;
+    t(-1) = 0;
+  }
+
+  /*
+  // get c(1..2), t(1..2)
+  */
+  for (i = 1; i <= 2; i++) {
+    if (i >= right) {
+      c(i) = 0;
+      t(i) = 0;
+    } else {
+      c(i) = rstr[i]; /* may be '\0'; */
+      if (!th_isthai(c(i)))
+        right = i--;
+      else {
+        t(i) = twbtype(c(i));
+        if (!(t(i) & A)) right = i--;
+      }
+    }
+  }
+  /*
+  // get c(-2..-3), t(-2..-3)
+  */
+  for (i = -2, j = -2; i >= -3; j--) {
+    if (j < -left) {
+      c(i) = 0;
+      t(i) = 0;
+      i--;
+    } else {
+      c(i) = lstr[j];
+      if (!th_isthai(c(i)))
+        left = 0;
+      else {
+        t(i) = (twb_t)(th_isthai(c(i)) ? twbtype(c(i)) : 0);
+        if (!(t(i) & A))
+          left = 0;
+        else {
+          if ((t(i + 1) & MT) && ((t(i) & VR) || (t(i + 2) & VR))) {
+            c(i + 1) = c(i);
+            t(i + 1) = t(i);
+          } else
+            i--;
+        }
+      }
+    }
+  }
+
+  /*
+  // prohibit the unlikely
+  */
+  if ((t(-1) & C) && (t(0) & C)) {
+    if ((t(-1) & CHE) || (t(0) & CHB)) return -1;
+  }
+  /*
+  // special case : vlao, C/ sara_a|aa, !sara_a
+  */
+  if ((t(-3) & (VLA | VLO)) && (t(-2) & C) && (c(0) != TH_SARA_A) &&
+      (c(-1) == TH_SARA_A || c(-0) == TH_SARA_AA))
+    return 0;
+
+  /*
+  // prohibit break
+  */
+  if (t(0) & NB) return -1;
+  if (t(-1) & NE) return -1;
+
+  /*
+        // apply 100% rules
+  */
+  if (t(-1) & VRE) {
+    if (c(-2) == TH_SARA_AA && c(-1) == TH_SARA_A) return 0;
+    return -1; /* usually too short syllable, part of word */
+  }
+
+  if (t(-2) & VRE) return -1;
+
+  if ((t(0) & C) && (t(1) & (VR | MT)) &&
+      (c(2) != TH_THANTHAKHAT)) {                              /*?C, NB */
+    if ((t(-1) & (VRS | VRX)) && c(1) == TH_SARA_I) return -1; /* exception */
+    if (t(-1) & (V | M)) return 0;                             /* !C/ C, NB */
+    if (t(-2) & VRS) return 0;               /* VRS, C / C, NB */
+    if (!(t(0) & C2) && c(1) == TH_SARA_I) { /*	/ !C2 or /c, sara_i */
+      if (t(-2) & VRX) return 0;             /* VRX, C / C, NB ? 100%? */
+      if (t(-2) & VC) return 0;              /* VC, C / C, NB ? 100% */
+    }
+  }
+  if ((t(-1) & VRX) && (t(0) & CC)) return 0; /* VRX/ CC */
+  if ((t(-2) & VRS) && (t(-1) & C) && (t(0) & (V | M)))
+    return 0; /* VRS, C/ !C */
+
+  if ((t(0) & CX) && (t(1) & C2) && (c(2) != TH_THANTHAKHAT)) {
+    if ((t(-2) & A) && (t(-1) & CX)) return 0;  /* A, CX / CX, C2 */
+    if ((t(-2) & CX) && (t(-1) & MT)) return 0; /* CX, MT / CX, C2 */
+  }
+  /*
+  // apply 90% rules
+  */
+  if (t(0) & VL) return 0;
+  if (t(1) & VL) return -1;
+  if (c(-1) == TH_THANTHAKHAT && c(-2) != TH_RORUA && c(-2) != TH_LOLING)
+    return 0;
+
+  /*
+  //return -1;
+  // apply 80% rules
+  */
+  if (t(0) & CHE) {
+    if ((t(-2) & VRS) && (t(-1) & C)) return 0; /* VRS, C/ CHE */
+    /*if(t(-1) & VRX) return 0;					// VRX/ CHE */
+    if (t(-1) & VC) return 0; /* VC/ CHE */
+  }
+  if (t(-1) & CHB) {
+    if ((t(0) & C) && (t(1) & VR)) return 0; /* CHB/ CC, VR */
+    if (t(0) & VC) return 0;                 /* CHB/ VC */
+  }
+
+  if ((t(-2) & VL) && (t(1) & VR)) { /* VL, C? C, VR */
+    if (t(-2) & VLI)
+      return 0;                        /* VLI,C/C,VR .*/
+    else {                             /* vlao, C ? C , VR */
+      if (c(1) == TH_SARA_A) return 2; /* vlao, C, C, sara_a/ */
+      if (t(-2) & VLO) return 0;       /* VLO, C/ C, !sara_a */
+      if (!(t(1) & VRA)) return 0;     /* VLA, C/ C, !vca */
+    }
+  }
+  /* C,MT,C */
+  if ((t(-2) & C) && (t(-1) & MT) && (t(0) & CX)) return 1;
+
+  return -1;
+}
+
+int TrbFollowing(const th_char* begin, int length, int offset)
+/*
+//(ThBreakIterator *this, int offset)
+*/
+{
+  const th_char* w = begin + offset;
+  const th_char* end = begin + length;
+  while (w < end && *w && !th_isthai(*w) && th_isspace(*w)) w++;
+
+  if (w < end && *w && !th_isthai(*w)) {
+    int english = FALSE;
+    while (w < end && *w && !th_isthai(*w) && !th_isspace(*w)) {
+      if (th_isalpha(*w)) english = TRUE;
+      w++;
+    }
+    if (english || w == end || (!th_isthai(*w) && th_isspace(*w)))
+      return w - begin;
+  }
+  if (w == end || *w == 0 || !th_isthai(*w)) return w - begin;
+  w++;
+  if (w < end && *w && th_isthai(*w)) {
+    int brk = TrbWordBreakPos(begin, w - begin, w, end - w);
+    while (brk < 0) {
+      w++;
+      if (w == end || *w == 0 || !th_isthai(*w)) break;
+      brk = TrbWordBreakPos(begin, w - begin, w, end - w);
+    }
+    if (brk > 0) w += brk;
+  }
+  if (w < end && *w && !th_isthai(*w)) {
+    while (w < end && *w && !th_isthai(*w) && !th_isalpha(*w) &&
+           !th_isspace(*w))
+      w++;
+  }
+  return w - begin;
+}
+
+/*
+/////////////////////////////////////////////////
+*/
+const twb_t _TwbType[0x100 - 0xa0] = {
+#if 0
+/* 80 € */	T,
+/* 81-8f */	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+/* 90  */	T,
+/* 91-9f */	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+#endif
+    /* a0   */ 0,
+    /* a1 ¡ */ CS,
+    /* a2 ¢ */ CS | CHE,
+    /* a3 £ */ CC | CHE,
+    /* a4 € */ CS | CHE,
+    /* a5 ¥ */ CC | CHE,
+    /* a6 Š */ CS,
+    /* a7 § */ CS | CHB,
+    /* a8 š */ CS,
+    /* a9 © */ CC | CHE,
+    /* aa ª */ CS,
+    /* ab « */ CC | CHE,
+    /* ac ¬ */ CC | CHB | CHE,
+    /* ad ­ */ CS | CHB,
+    /* ae ® */ CS | CHB,
+    /* af ¯ */ CS | CHB,
+    /* b0 ° */ CS,
+    /* b1 ± */ CS | CHB | CHE,
+    /* b2 ² */ CS | CHB | CHE,
+    /* b3 ³ */ CS | CHB,
+    /* b4 Ž */ CS,
+    /* b5 µ */ CS,
+    /* b6 ¶ */ CS,
+    /* b7 · */ CS,
+    /* b8 ž */ CS,
+    /* b9 ¹ */ CS,
+    /* ba º */ CS,
+    /* bb » */ CS,
+    /* bc Π*/ CC | CHE,
+    /* bd œ */ CC | CHE,
+    /* be Ÿ */ CS,
+    /* bf ¿ */ CS,
+    /* c0 À */ CS | CHE,
+    /* c1 Á */ CS,
+    /* c2 Â */ CS,
+    /* c3 Ã */ CS | C2 | CHE, /* ? add CHE  */
+    /* c4 Ä */ VC | CHE,
+    /* c5 Å */ CS | C2,
+    /* c6 Æ */ VC | CHE,
+    /* c7 Ç */ VC | C2,
+    /* c8 È */ CS,
+    /* c9 É */ CS | CHB,
+    /* ca Ê */ CS | CHE,
+    /* cb Ë */ CC | CHE,
+    /* CC Ì */ CS | CHB | CHE,
+    /* cd Í */ VC,
+    /* ce Î */ CC | CHE,
+    /* cf Ï */ T,
+    /* d0 Ð */ VRE | VRA,
+    /* d1  Ñ */ VRS,
+    /* d2 Ò */ VRX | VRA,
+    /* d3  Ó */ VRE,
+    /* d4  Ô */ VRX | VRA,
+    /* d5  Õ */ VRX | VRA,
+    /* d6  Ö */ VRS,
+    /* d7  × */ VRS | VRA,
+    /* d8  Ø */ VRX,
+    /* d9  Ù */ VRX,
+    /* da  Ú */ T,
+    /* db Û */ 0,
+    /* dc Ü */ 0,
+    /* dd Ý */ 0,
+    /* de Þ */ 0,
+    /* df ß */ T,
+    /* e0 à */ VLA,
+    /* e1 á */ VLO,
+    /* e2 â */ VLO,
+    /* e3 ã */ VLI,
+    /* e4 ä */ VLI,
+    /* e5 å */ VRE,
+    /* e6 æ */ M,
+    /* e7  ç */ M,
+    /* e8  è */ M | MT,
+    /* e9  é */ M | MT,
+    /* ea  ê */ M | MT,
+    /* eb  ë */ M | MT,
+    /* ec  ì */ M,
+    /* ed  í */ T,
+    /* ee  î */ T,
+    /* ef ï */ T,
+    /* f0 ð */ T,
+    /* f1 ñ */ T,
+    /* f2 ò */ T,
+    /* f3 ó */ T,
+    /* f4 ô */ T,
+    /* f5 õ */ T,
+    /* f6 ö */ T,
+    /* f7 ÷ */ T,
+    /* f8 ø */ T,
+    /* f9 ù */ T,
+    /* fa ú */ T,
+    /* fb û */ T,
+    /* fc ü */ 0,
+    /* fd ý */ 0,
+    /* fe þ */ 0,
+    /* ff ’ */ 0};