1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
Copyright 1989, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
*/
#ifndef _Xct_h
#define _Xct_h
#include <X11/Xfuncproto.h>
#define XctVersion 1
typedef unsigned char *XctString;
typedef enum {
XctUnspecified,
XctLeftToRight,
XctRightToLeft
} XctHDirection;
typedef unsigned long XctFlags;
/* These are bits in XctFlags. */
#define XctSingleSetSegments 0x0001
/* This means that returned segments should contain characters from only
* one set (C0, C1, GL, GR). When this is requested, XctSegment is never
* returned, instead XctC0Segment, XctC1Segment, XctGlSegment, and
* XctGRSegment are returned. C0 and C1 segments are always returned as
* singleton characters.
*/
#define XctProvideExtensions 0x0002
/* This means that if the Compound Text string is from a higher version
* than this code is implemented to, then syntactically correct but unknown
* control sequences should be returned as XctExtension items. If this
* flag is not set, and the Compound Text string version indicates that
* extensions cannot be ignored, then each unknown control sequence will be
* reported as an XctError.
*/
#define XctAcceptC0Extensions 0x0004
/* This means that if the Compound Text string is from a higher version
* than this code is implemented to, then unknown C0 characters should be
* treated as if they were legal, and returned as C0 characters (regardless
* of how XctProvideExtensions is set). If this flag is not set, then all
* unknown C0 characters are treated according to XctProvideExtensions.
*/
#define XctAcceptC1Extensions 0x0008
/* This means that if the Compound Text string is from a higher version
* than this code is implemented to, then unknown C0 characters should be
* treated as if they were legal, and returned as C0 characters (regardless
* of how XctProvideExtensions is set). If this flag is not set, then all
* unknown C0 characters are treated according to XctProvideExtensions.
*/
#define XctHideDirection 0x0010
/* This means that horizontal direction changes should be reported as
* XctHorizontal items. If this flag is not set, then direction changes are
* not returned as items, but the current direction is still maintained and
* reported for other items.
*/
#define XctFreeString 0x0020
/* This means that XctFree should free the Compound Text string (that was
* passed to XctCreate. If this flag is not set, the string is not freed.
*/
#define XctShiftMultiGRToGL 0x0040
/* Translate GR segments on-the-fly into GL segments for the GR sets:
* GB2312.1980-1, JISX0208.1983-1, and KSC5601.1987-1.
*/
/* This is the return type for XctNextItem. */
typedef enum {
XctSegment, /* used when XctSingleSetSegments is not requested */
XctC0Segment, /* used when XctSingleSetSegments is requested */
XctGLSegment, /* used when XctSingleSetSegments is requested */
XctC1Segment, /* used when XctSingleSetSegments is requested */
XctGRSegment, /* used when XctSingleSetSegments is requested */
XctExtendedSegment, /* an extended segment */
XctExtension, /* used when XctProvideExtensions is requested */
XctHorizontal, /* horizontal direction or depth change */
XctEndOfText, /* end of text string */
XctError /* syntactic or semantic error */
} XctResult;
typedef struct _XctRec {
XctString total_string; /* as given to XctCreate */
int total_length; /* as given to XctCreate */
XctFlags flags; /* as given to XctCreate */
int version; /* indicates the version of the CT spec
* the string was produced from */
int can_ignore_exts;/* non-zero if ignoring extensions is
* acceptable, else zero */
XctString item; /* item returned from XctNextItem */
unsigned item_length; /* length of item in bytes */
int char_size; /* number of bytes per character in
* item, with zero meaning variable */
char *encoding; /* Encoding name for item */
XctHDirection horizontal; /* direction of item */
unsigned horz_depth; /* current direction nesting depth */
char *GL; /* "{I} F" string for current GL */
char *GL_encoding; /* Encoding name for current GL */
int GL_set_size; /* 94 or 96 */
int GL_char_size; /* number of bytes per GL character */
char *GR; /* "{I} F" string for current GR */
char *GR_encoding; /* Encoding name for current GR */
int GR_set_size; /* 94 or 96 */
int GR_char_size; /* number of bytes per GR character */
char *GLGR_encoding; /* Encoding name for current GL+GR,
* if known */
struct _XctPriv *priv; /* private to parser, don't peek */
} *XctData;
/* these are the external routines */
_XFUNCPROTOBEGIN
XctData XctCreate
(
_Xconst unsigned char *string,
int length,
XctFlags flags
);
XctResult XctNextItem
(
XctData data
);
void XctFree
(
XctData data
);
void XctReset
(
XctData data
);
_XFUNCPROTOEND
#endif /* _Xct_h */
|
