This source file includes following definitions.
- u8_mbtoucr
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18 #include <config.h>
19
20
21 #include "unistr.h"
22
23 int
24 u8_mbtoucr (ucs4_t *puc, const uint8_t *s, size_t n)
25 {
26 uint8_t c = *s;
27
28 if (c < 0x80)
29 {
30 *puc = c;
31 return 1;
32 }
33 else if (c >= 0xc2)
34 {
35 if (c < 0xe0)
36 {
37 if (n >= 2)
38 {
39 if ((s[1] ^ 0x80) < 0x40)
40 {
41 *puc = ((unsigned int) (c & 0x1f) << 6)
42 | (unsigned int) (s[1] ^ 0x80);
43 return 2;
44 }
45
46 }
47 else
48 {
49
50 *puc = 0xfffd;
51 return -2;
52 }
53 }
54 else if (c < 0xf0)
55 {
56 if (n >= 2)
57 {
58 if ((s[1] ^ 0x80) < 0x40
59 && (c >= 0xe1 || s[1] >= 0xa0)
60 && (c != 0xed || s[1] < 0xa0))
61 {
62 if (n >= 3)
63 {
64 if ((s[2] ^ 0x80) < 0x40)
65 {
66 *puc = ((unsigned int) (c & 0x0f) << 12)
67 | ((unsigned int) (s[1] ^ 0x80) << 6)
68 | (unsigned int) (s[2] ^ 0x80);
69 return 3;
70 }
71
72 }
73 else
74 {
75
76 *puc = 0xfffd;
77 return -2;
78 }
79 }
80
81 }
82 else
83 {
84
85 *puc = 0xfffd;
86 return -2;
87 }
88 }
89 else if (c < 0xf8)
90 {
91 if (n >= 2)
92 {
93 if ((s[1] ^ 0x80) < 0x40
94 && (c >= 0xf1 || s[1] >= 0x90)
95 && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
96 {
97 if (n >= 3)
98 {
99 if ((s[2] ^ 0x80) < 0x40)
100 {
101 if (n >= 4)
102 {
103 if ((s[3] ^ 0x80) < 0x40)
104 {
105 *puc = ((unsigned int) (c & 0x07) << 18)
106 | ((unsigned int) (s[1] ^ 0x80) << 12)
107 | ((unsigned int) (s[2] ^ 0x80) << 6)
108 | (unsigned int) (s[3] ^ 0x80);
109 return 4;
110 }
111
112 }
113 else
114 {
115
116 *puc = 0xfffd;
117 return -2;
118 }
119 }
120
121 }
122 else
123 {
124
125 *puc = 0xfffd;
126 return -2;
127 }
128 }
129
130 }
131 else
132 {
133
134 *puc = 0xfffd;
135 return -2;
136 }
137 }
138 }
139
140 *puc = 0xfffd;
141 return -1;
142 }