1 #ifndef NVIM_MBYTE_H
2 #define NVIM_MBYTE_H
3
4 #include <stdbool.h>
5 #include <stdint.h>
6 #include <string.h>
7
8 #include "nvim/func_attr.h"
9 #include "nvim/iconv.h"
10 #include "nvim/os/os_defs.h" // For indirect
11 #include "nvim/types.h" // for char_u
12
13 /*
14 * Return byte length of character that starts with byte "b".
15 * Returns 1 for a single-byte character.
16 * MB_BYTE2LEN_CHECK() can be used to count a special key as one byte.
17 * Don't call MB_BYTE2LEN(b) with b < 0 or b > 255!
18 */
19 #define MB_BYTE2LEN(b) utf8len_tab[b]
20 #define MB_BYTE2LEN_CHECK(b) (((b) < 0 || (b) > 255) ? 1 : utf8len_tab[b])
21
22 // max length of an unicode char
23 #define MB_MAXCHAR 6
24
25 // properties used in enc_canon_table[] (first three mutually exclusive)
26 #define ENC_8BIT 0x01
27 #define ENC_DBCS 0x02
28 #define ENC_UNICODE 0x04
29
30 #define ENC_ENDIAN_B 0x10 // Unicode: Big endian
31 #define ENC_ENDIAN_L 0x20 // Unicode: Little endian
32
33 #define ENC_2BYTE 0x40 // Unicode: UCS-2
34 #define ENC_4BYTE 0x80 // Unicode: UCS-4
35 #define ENC_2WORD 0x100 // Unicode: UTF-16
36
37 #define ENC_LATIN1 0x200 // Latin1
38 #define ENC_LATIN9 0x400 // Latin9
39 #define ENC_MACROMAN 0x800 // Mac Roman (not Macro Man! :-)
40
41 /// Flags for vimconv_T
42 typedef enum {
43 CONV_NONE = 0,
44 CONV_TO_UTF8 = 1,
45 CONV_9_TO_UTF8 = 2,
46 CONV_TO_LATIN1 = 3,
47 CONV_TO_LATIN9 = 4,
48 CONV_ICONV = 5,
49 } ConvFlags;
50
51 #define MBYTE_NONE_CONV { \
52 .vc_type = CONV_NONE, \
53 .vc_factor = 1, \
54 .vc_fail = false, \
55 }
56
57 /// Structure used for string conversions
58 typedef struct {
59 int vc_type; ///< Zero or more ConvFlags.
60 int vc_factor; ///< Maximal expansion factor.
61 #ifdef HAVE_ICONV
62 iconv_t vc_fd; ///< Value for CONV_ICONV.
63 #endif
64 bool vc_fail; ///< What to do with invalid characters: if true, fail,
65 ///< otherwise use '?'.
66 } vimconv_T;
67
68 extern const uint8_t utf8len_tab_zero[256];
69
70 extern const uint8_t utf8len_tab[256];
71
72 #ifdef INCLUDE_GENERATED_DECLARATIONS
73 # include "mbyte.h.generated.h"
74 #endif
75
76 static inline int mb_strcmp_ic(bool ic, const char *s1, const char *s2)
77 REAL_FATTR_NONNULL_ALL REAL_FATTR_PURE REAL_FATTR_WARN_UNUSED_RESULT;
78
79 /// Compare strings
80 ///
81 /// @param[in] ic True if case is to be ignored.
82 ///
83 /// @return 0 if s1 == s2, <0 if s1 < s2, >0 if s1 > s2.
mb_strcmp_ic(bool ic,const char * s1,const char * s2)84 static inline int mb_strcmp_ic(bool ic, const char *s1, const char *s2)
85 {
86 return (ic ? mb_stricmp(s1, s2) : strcmp(s1, s2));
87 }
88 #endif // NVIM_MBYTE_H
89