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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /intl/lwbrk/rulebrk.c
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'intl/lwbrk/rulebrk.c')
-rw-r--r--intl/lwbrk/rulebrk.c388
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 Œ */ 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};