1/* FriBidi
2 * fribidi-char-sets-cp1255.c - CP1255 character set conversion routines
3 *
4 * Authors:
5 * Behdad Esfahbod, 2001, 2002, 2004
6 * Dov Grobgeld, 1999, 2000
7 *
8 * Copyright (C) 2004 Sharif FarsiWeb, Inc
9 * Copyright (C) 2001,2002 Behdad Esfahbod
10 * Copyright (C) 1999,2000 Dov Grobgeld
11 *
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public License
23 * along with this library, in a file named COPYING; if not, write to the
24 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 * Boston, MA 02110-1301, USA
26 *
27 * For licensing issues, contact <fribidi.license@gmail.com>.
28 */
29
30#include <common.h>
31
32#include <fribidi-char-sets-cp1255.h>
33
34#define ISO_ALEF 0xE0
35#define ISO_TAV 0xFA
36#define CP1255_SHEVA 0xC0
37#define CP1255_SOF_PASUQ 0xD3
38#define CP1255_DOUBLE_VAV 0xD4
39#define CP1255_GERSHAYIM 0xD8
40#define CP1255_LRM 0xFD
41#define CP1255_RLM 0xFE
42
43#define UNI_ALEF 0x05D0
44#define UNI_TAV 0x05EA
45#define UNI_SHEVA 0x05B0
46#define UNI_SOF_PASUQ 0x05C3
47#define UNI_DOUBLE_VAV 0x05F0
48#define UNI_GERSHAYIM 0x05F4
49#define UNI_LRM 0x200E
50#define UNI_RLM 0x200F
51
52static FriBidiChar fribidi_cp1255_to_unicode_tab[] = { /* 0x80-0xBF */
53 0x20AC, 0x0081, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021,
54 0x02C6, 0x2030, 0x008a, 0x2039, 0x008c, 0x008d, 0x008e, 0x008f,
55 0x0090, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
56 0x02DC, 0x2122, 0x009a, 0x203A, 0x009c, 0x009d, 0x009e, 0x009f,
57 0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x20AA, 0x00A5, 0x00A6, 0x00A7,
58 0x00A8, 0x00A9, 0x00D7, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00AF,
59 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x00B6, 0x00B7,
60 0x00B8, 0x00B9, 0x00F7, 0x00BB, 0x00BC, 0x00BD, 0x00BE, 0x00BF
61};
62
63FriBidiChar
64fribidi_cp1255_to_unicode_c (
65 /* input */
66 char sch
67)
68{
69 register unsigned char ch = (unsigned char) sch;
70 if (ch >= ISO_ALEF && ch <= ISO_TAV)
71 return ch - ISO_ALEF + UNI_ALEF;
72 else if (ch >= CP1255_SHEVA && ch <= CP1255_SOF_PASUQ)
73 return ch - CP1255_SHEVA + UNI_SHEVA;
74 else if (ch >= CP1255_DOUBLE_VAV && ch <= CP1255_GERSHAYIM)
75 return ch - CP1255_DOUBLE_VAV + UNI_DOUBLE_VAV;
76 /* cp1256 specific chars */
77 else if (ch >= 0x80 && ch <= 0xbf)
78 return fribidi_cp1255_to_unicode_tab[ch - 0x80];
79 else if (ch == CP1255_LRM || ch == CP1255_RLM)
80 return ch - CP1255_LRM + UNI_LRM;
81 /* treat LRM/LRM charrectes correctly */
82 else
83 return ch;
84}
85
86char
87fribidi_unicode_to_cp1255_c (
88 /* input */
89 FriBidiChar uch
90)
91{
92 if (uch >= UNI_ALEF && uch <= UNI_TAV)
93 return (char) (uch - UNI_ALEF + ISO_ALEF);
94 if (uch >= UNI_SHEVA && uch <= UNI_SOF_PASUQ)
95 return (char) (uch - UNI_SHEVA + CP1255_SHEVA);
96 if (uch >= UNI_DOUBLE_VAV && uch <= UNI_GERSHAYIM)
97 return (char) (uch - UNI_DOUBLE_VAV + CP1255_DOUBLE_VAV);
98 /* TODO: handle pre-composed and presentation chars */
99 if (uch == UNI_LRM || uch==UNI_RLM)
100 return (char) (uch - UNI_LRM + CP1255_LRM);
101 /* Treat LRM/RLM charrecters correctly */
102 else if (uch < 256)
103 return (char) uch;
104 else
105 return '?';
106}
107
108/* Editor directions:
109 * vim:textwidth=78:tabstop=8:shiftwidth=2:autoindent:cindent
110 */
111

source code of gtk/subprojects/fribidi/lib/fribidi-char-sets-cp1255.c