mirror of
https://github.com/neovim/neovim.git
synced 2025-09-13 06:48:17 +00:00
1a15cf84c2
Change POROJECT_NAME to 'nvim', and use it as the gettext domain name. The *.mo files, previously installed as $runtime/lang/xx/LC_MESSAGES/nvim.mo, are now installed as $prefix/locale/xx/LC_MESSAGES/nvim.mo.
3057 lines
84 KiB
C
3057 lines
84 KiB
C
/*
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* mbyte.c: Code specifically for handling multi-byte characters.
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* Multibyte extensions partly by Sung-Hoon Baek
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*
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* The encoding used in the core is set with 'encoding'. When 'encoding' is
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* changed, the following four variables are set (for speed).
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* Currently these types of character encodings are supported:
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*
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* "enc_dbcs" When non-zero it tells the type of double byte character
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* encoding (Chinese, Korean, Japanese, etc.).
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* The cell width on the display is equal to the number of
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* bytes. (exception: DBCS_JPNU with first byte 0x8e)
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* Recognizing the first or second byte is difficult, it
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* requires checking a byte sequence from the start.
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* "enc_utf8" When TRUE use Unicode characters in UTF-8 encoding.
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* The cell width on the display needs to be determined from
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* the character value.
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* Recognizing bytes is easy: 0xxx.xxxx is a single-byte
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* char, 10xx.xxxx is a trailing byte, 11xx.xxxx is a leading
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* byte of a multi-byte character.
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* To make things complicated, up to six composing characters
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* are allowed. These are drawn on top of the first char.
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* For most editing the sequence of bytes with composing
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* characters included is considered to be one character.
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* "enc_unicode" When 2 use 16-bit Unicode characters (or UTF-16).
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* When 4 use 32-but Unicode characters.
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* Internally characters are stored in UTF-8 encoding to
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* avoid NUL bytes. Conversion happens when doing I/O.
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* "enc_utf8" will also be TRUE.
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*
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* "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero.
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*
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* If none of these is TRUE, 8-bit bytes are used for a character. The
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* encoding isn't currently specified (TODO).
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*
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* 'encoding' specifies the encoding used in the core. This is in registers,
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* text manipulation, buffers, etc. Conversion has to be done when characters
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* in another encoding are received or send:
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*
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* clipboard
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* ^
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* | (2)
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* V
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* +---------------+
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* (1) | | (3)
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* keyboard ----->| core |-----> display
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* | |
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* +---------------+
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* ^
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* | (4)
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* V
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* file
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*
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* (1) Typed characters arrive in the current locale.
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* (2) Text will be made available with the encoding specified with
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* 'encoding'. If this is not sufficient, system-specific conversion
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* might be required.
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* (3) For the GUI the correct font must be selected, no conversion done.
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* (4) The encoding of the file is specified with 'fileencoding'. Conversion
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* is to be done when it's different from 'encoding'.
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*
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* The ShaDa file is a special case: Only text is converted, not file names.
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* Vim scripts may contain an ":encoding" command. This has an effect for
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* some commands, like ":menutrans"
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*/
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#include <inttypes.h>
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#include <stdbool.h>
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#include <string.h>
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#include <wchar.h>
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#include <wctype.h>
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#include "nvim/vim.h"
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#include "nvim/ascii.h"
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#ifdef HAVE_LOCALE_H
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# include <locale.h>
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#endif
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#include "nvim/iconv.h"
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#include "nvim/mbyte.h"
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#include "nvim/charset.h"
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#include "nvim/cursor.h"
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#include "nvim/fileio.h"
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#include "nvim/func_attr.h"
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#include "nvim/memline.h"
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#include "nvim/message.h"
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#include "nvim/misc1.h"
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#include "nvim/misc2.h"
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#include "nvim/memory.h"
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#include "nvim/option.h"
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#include "nvim/screen.h"
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#include "nvim/spell.h"
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#include "nvim/strings.h"
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#include "nvim/os/os.h"
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#include "nvim/arabic.h"
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typedef struct {
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int rangeStart;
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int rangeEnd;
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int step;
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int offset;
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} convertStruct;
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struct interval {
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long first;
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long last;
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};
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#ifdef INCLUDE_GENERATED_DECLARATIONS
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# include "mbyte.c.generated.h"
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# include "unicode_tables.generated.h"
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#endif
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/*
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* Lookup table to quickly get the length in bytes of a UTF-8 character from
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* the first byte of a UTF-8 string.
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* Bytes which are illegal when used as the first byte have a 1.
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* The NUL byte has length 1.
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*/
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static char utf8len_tab[256] =
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{
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
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3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1,
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};
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/*
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* Like utf8len_tab above, but using a zero for illegal lead bytes.
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*/
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static uint8_t utf8len_tab_zero[256] =
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{
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
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3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0,
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};
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/*
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* Canonical encoding names and their properties.
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* "iso-8859-n" is handled by enc_canonize() directly.
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*/
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static struct
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{ const char *name; int prop; int codepage; }
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enc_canon_table[] =
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{
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#define IDX_LATIN_1 0
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{"latin1", ENC_8BIT + ENC_LATIN1, 1252},
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#define IDX_ISO_2 1
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{"iso-8859-2", ENC_8BIT, 0},
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#define IDX_ISO_3 2
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{"iso-8859-3", ENC_8BIT, 0},
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#define IDX_ISO_4 3
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{"iso-8859-4", ENC_8BIT, 0},
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#define IDX_ISO_5 4
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{"iso-8859-5", ENC_8BIT, 0},
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#define IDX_ISO_6 5
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{"iso-8859-6", ENC_8BIT, 0},
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#define IDX_ISO_7 6
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{"iso-8859-7", ENC_8BIT, 0},
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#define IDX_ISO_8 7
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{"iso-8859-8", ENC_8BIT, 0},
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#define IDX_ISO_9 8
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{"iso-8859-9", ENC_8BIT, 0},
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#define IDX_ISO_10 9
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{"iso-8859-10", ENC_8BIT, 0},
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#define IDX_ISO_11 10
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{"iso-8859-11", ENC_8BIT, 0},
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#define IDX_ISO_13 11
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{"iso-8859-13", ENC_8BIT, 0},
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#define IDX_ISO_14 12
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{"iso-8859-14", ENC_8BIT, 0},
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#define IDX_ISO_15 13
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{"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0},
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#define IDX_KOI8_R 14
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{"koi8-r", ENC_8BIT, 0},
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#define IDX_KOI8_U 15
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{"koi8-u", ENC_8BIT, 0},
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#define IDX_UTF8 16
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{"utf-8", ENC_UNICODE, 0},
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#define IDX_UCS2 17
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{"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0},
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#define IDX_UCS2LE 18
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{"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0},
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#define IDX_UTF16 19
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{"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0},
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#define IDX_UTF16LE 20
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{"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0},
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#define IDX_UCS4 21
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{"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0},
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#define IDX_UCS4LE 22
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{"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0},
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/* For debugging DBCS encoding on Unix. */
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#define IDX_DEBUG 23
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{"debug", ENC_DBCS, DBCS_DEBUG},
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#define IDX_EUC_JP 24
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{"euc-jp", ENC_DBCS, DBCS_JPNU},
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#define IDX_SJIS 25
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{"sjis", ENC_DBCS, DBCS_JPN},
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#define IDX_EUC_KR 26
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{"euc-kr", ENC_DBCS, DBCS_KORU},
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#define IDX_EUC_CN 27
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{"euc-cn", ENC_DBCS, DBCS_CHSU},
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#define IDX_EUC_TW 28
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{"euc-tw", ENC_DBCS, DBCS_CHTU},
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#define IDX_BIG5 29
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{"big5", ENC_DBCS, DBCS_CHT},
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/* MS-DOS and MS-Windows codepages are included here, so that they can be
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* used on Unix too. Most of them are similar to ISO-8859 encodings, but
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* not exactly the same. */
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#define IDX_CP437 30
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{"cp437", ENC_8BIT, 437}, /* like iso-8859-1 */
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#define IDX_CP737 31
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{"cp737", ENC_8BIT, 737}, /* like iso-8859-7 */
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#define IDX_CP775 32
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{"cp775", ENC_8BIT, 775}, /* Baltic */
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#define IDX_CP850 33
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{"cp850", ENC_8BIT, 850}, /* like iso-8859-4 */
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#define IDX_CP852 34
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{"cp852", ENC_8BIT, 852}, /* like iso-8859-1 */
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#define IDX_CP855 35
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{"cp855", ENC_8BIT, 855}, /* like iso-8859-2 */
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#define IDX_CP857 36
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{"cp857", ENC_8BIT, 857}, /* like iso-8859-5 */
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#define IDX_CP860 37
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{"cp860", ENC_8BIT, 860}, /* like iso-8859-9 */
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#define IDX_CP861 38
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{"cp861", ENC_8BIT, 861}, /* like iso-8859-1 */
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#define IDX_CP862 39
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{"cp862", ENC_8BIT, 862}, /* like iso-8859-1 */
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#define IDX_CP863 40
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{"cp863", ENC_8BIT, 863}, /* like iso-8859-8 */
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#define IDX_CP865 41
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{"cp865", ENC_8BIT, 865}, /* like iso-8859-1 */
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#define IDX_CP866 42
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{"cp866", ENC_8BIT, 866}, /* like iso-8859-5 */
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#define IDX_CP869 43
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{"cp869", ENC_8BIT, 869}, /* like iso-8859-7 */
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#define IDX_CP874 44
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{"cp874", ENC_8BIT, 874}, /* Thai */
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#define IDX_CP932 45
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{"cp932", ENC_DBCS, DBCS_JPN},
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#define IDX_CP936 46
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{"cp936", ENC_DBCS, DBCS_CHS},
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#define IDX_CP949 47
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{"cp949", ENC_DBCS, DBCS_KOR},
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#define IDX_CP950 48
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{"cp950", ENC_DBCS, DBCS_CHT},
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#define IDX_CP1250 49
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{"cp1250", ENC_8BIT, 1250}, /* Czech, Polish, etc. */
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#define IDX_CP1251 50
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{"cp1251", ENC_8BIT, 1251}, /* Cyrillic */
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/* cp1252 is considered to be equal to latin1 */
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#define IDX_CP1253 51
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{"cp1253", ENC_8BIT, 1253}, /* Greek */
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#define IDX_CP1254 52
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{"cp1254", ENC_8BIT, 1254}, /* Turkish */
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#define IDX_CP1255 53
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{"cp1255", ENC_8BIT, 1255}, /* Hebrew */
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#define IDX_CP1256 54
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{"cp1256", ENC_8BIT, 1256}, /* Arabic */
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#define IDX_CP1257 55
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{"cp1257", ENC_8BIT, 1257}, /* Baltic */
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#define IDX_CP1258 56
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{"cp1258", ENC_8BIT, 1258}, /* Vietnamese */
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#define IDX_MACROMAN 57
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{"macroman", ENC_8BIT + ENC_MACROMAN, 0}, /* Mac OS */
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#define IDX_HPROMAN8 58
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{"hp-roman8", ENC_8BIT, 0}, /* HP Roman8 */
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#define IDX_COUNT 59
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};
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/*
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* Aliases for encoding names.
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*/
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static struct
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{ const char *name; int canon; }
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enc_alias_table[] =
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{
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{"ansi", IDX_LATIN_1},
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{"iso-8859-1", IDX_LATIN_1},
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{"latin2", IDX_ISO_2},
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{"latin3", IDX_ISO_3},
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{"latin4", IDX_ISO_4},
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{"cyrillic", IDX_ISO_5},
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{"arabic", IDX_ISO_6},
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{"greek", IDX_ISO_7},
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{"hebrew", IDX_ISO_8},
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{"latin5", IDX_ISO_9},
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{"turkish", IDX_ISO_9}, /* ? */
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{"latin6", IDX_ISO_10},
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{"nordic", IDX_ISO_10}, /* ? */
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{"thai", IDX_ISO_11}, /* ? */
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{"latin7", IDX_ISO_13},
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{"latin8", IDX_ISO_14},
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{"latin9", IDX_ISO_15},
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{"utf8", IDX_UTF8},
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{"unicode", IDX_UCS2},
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{"ucs2", IDX_UCS2},
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{"ucs2be", IDX_UCS2},
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{"ucs-2be", IDX_UCS2},
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{"ucs2le", IDX_UCS2LE},
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{"utf16", IDX_UTF16},
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{"utf16be", IDX_UTF16},
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{"utf-16be", IDX_UTF16},
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{"utf16le", IDX_UTF16LE},
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{"ucs4", IDX_UCS4},
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{"ucs4be", IDX_UCS4},
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{"ucs-4be", IDX_UCS4},
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{"ucs4le", IDX_UCS4LE},
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{"utf32", IDX_UCS4},
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{"utf-32", IDX_UCS4},
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{"utf32be", IDX_UCS4},
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{"utf-32be", IDX_UCS4},
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{"utf32le", IDX_UCS4LE},
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{"utf-32le", IDX_UCS4LE},
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{"932", IDX_CP932},
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{"949", IDX_CP949},
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{"936", IDX_CP936},
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{"gbk", IDX_CP936},
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{"950", IDX_CP950},
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{"eucjp", IDX_EUC_JP},
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{"unix-jis", IDX_EUC_JP},
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{"ujis", IDX_EUC_JP},
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{"shift-jis", IDX_SJIS},
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{"pck", IDX_SJIS}, /* Sun: PCK */
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{"euckr", IDX_EUC_KR},
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{"5601", IDX_EUC_KR}, /* Sun: KS C 5601 */
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{"euccn", IDX_EUC_CN},
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{"gb2312", IDX_EUC_CN},
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{"euctw", IDX_EUC_TW},
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{"japan", IDX_EUC_JP},
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{"korea", IDX_EUC_KR},
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{"prc", IDX_EUC_CN},
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{"chinese", IDX_EUC_CN},
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{"taiwan", IDX_EUC_TW},
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{"cp950", IDX_BIG5},
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{"950", IDX_BIG5},
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{"mac", IDX_MACROMAN},
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{"mac-roman", IDX_MACROMAN},
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{NULL, 0}
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};
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/*
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* Find encoding "name" in the list of canonical encoding names.
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* Returns -1 if not found.
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*/
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static int enc_canon_search(const char_u *name)
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{
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int i;
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for (i = 0; i < IDX_COUNT; ++i)
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if (STRCMP(name, enc_canon_table[i].name) == 0)
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return i;
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return -1;
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}
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|
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/*
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* Find canonical encoding "name" in the list and return its properties.
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* Returns 0 if not found.
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*/
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int enc_canon_props(const char_u *name)
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{
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int i;
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i = enc_canon_search(name);
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if (i >= 0)
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return enc_canon_table[i].prop;
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if (STRNCMP(name, "2byte-", 6) == 0)
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return ENC_DBCS;
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if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0)
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return ENC_8BIT;
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return 0;
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}
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|
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/*
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* Set up for using multi-byte characters.
|
|
* Called in three cases:
|
|
* - by main() to initialize (p_enc == NULL)
|
|
* - by set_init_1() after 'encoding' was set to its default.
|
|
* - by do_set() when 'encoding' has been set.
|
|
* p_enc must have been passed through enc_canonize() already.
|
|
* Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags.
|
|
* Fills mb_bytelen_tab[] and returns NULL when there are no problems.
|
|
* When there is something wrong: Returns an error message and doesn't change
|
|
* anything.
|
|
*/
|
|
char_u * mb_init(void)
|
|
{
|
|
int i;
|
|
int idx;
|
|
int n;
|
|
int enc_dbcs_new = 0;
|
|
#if defined(USE_ICONV) && !defined(WIN3264) && !defined(WIN32UNIX) \
|
|
&& !defined(MACOS)
|
|
# define LEN_FROM_CONV
|
|
vimconv_T vimconv;
|
|
char_u *p;
|
|
#endif
|
|
|
|
if (p_enc == NULL) {
|
|
/* Just starting up: set the whole table to one's. */
|
|
for (i = 0; i < 256; ++i)
|
|
mb_bytelen_tab[i] = 1;
|
|
return NULL;
|
|
} else if (STRNCMP(p_enc, "8bit-", 5) == 0
|
|
|| STRNCMP(p_enc, "iso-8859-", 9) == 0) {
|
|
/* Accept any "8bit-" or "iso-8859-" name. */
|
|
enc_unicode = 0;
|
|
enc_utf8 = false;
|
|
} else if (STRNCMP(p_enc, "2byte-", 6) == 0) {
|
|
/* Unix: accept any "2byte-" name, assume current locale. */
|
|
enc_dbcs_new = DBCS_2BYTE;
|
|
} else if ((idx = enc_canon_search(p_enc)) >= 0) {
|
|
i = enc_canon_table[idx].prop;
|
|
if (i & ENC_UNICODE) {
|
|
/* Unicode */
|
|
enc_utf8 = true;
|
|
if (i & (ENC_2BYTE | ENC_2WORD))
|
|
enc_unicode = 2;
|
|
else if (i & ENC_4BYTE)
|
|
enc_unicode = 4;
|
|
else
|
|
enc_unicode = 0;
|
|
} else if (i & ENC_DBCS) {
|
|
/* 2byte, handle below */
|
|
enc_dbcs_new = enc_canon_table[idx].codepage;
|
|
} else {
|
|
/* Must be 8-bit. */
|
|
enc_unicode = 0;
|
|
enc_utf8 = false;
|
|
}
|
|
} else /* Don't know what encoding this is, reject it. */
|
|
return e_invarg;
|
|
|
|
if (enc_dbcs_new != 0) {
|
|
enc_unicode = 0;
|
|
enc_utf8 = false;
|
|
}
|
|
enc_dbcs = enc_dbcs_new;
|
|
has_mbyte = (enc_dbcs != 0 || enc_utf8);
|
|
|
|
|
|
/* Detect an encoding that uses latin1 characters. */
|
|
enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0
|
|
|| STRCMP(p_enc, "iso-8859-15") == 0);
|
|
|
|
/*
|
|
* Set the function pointers.
|
|
*/
|
|
if (enc_utf8) {
|
|
mb_ptr2len = utfc_ptr2len;
|
|
mb_ptr2len_len = utfc_ptr2len_len;
|
|
mb_char2len = utf_char2len;
|
|
mb_char2bytes = utf_char2bytes;
|
|
mb_ptr2cells = utf_ptr2cells;
|
|
mb_ptr2cells_len = utf_ptr2cells_len;
|
|
mb_char2cells = utf_char2cells;
|
|
mb_off2cells = utf_off2cells;
|
|
mb_ptr2char = utf_ptr2char;
|
|
mb_head_off = utf_head_off;
|
|
} else if (enc_dbcs != 0) {
|
|
mb_ptr2len = dbcs_ptr2len;
|
|
mb_ptr2len_len = dbcs_ptr2len_len;
|
|
mb_char2len = dbcs_char2len;
|
|
mb_char2bytes = dbcs_char2bytes;
|
|
mb_ptr2cells = dbcs_ptr2cells;
|
|
mb_ptr2cells_len = dbcs_ptr2cells_len;
|
|
mb_char2cells = dbcs_char2cells;
|
|
mb_off2cells = dbcs_off2cells;
|
|
mb_ptr2char = dbcs_ptr2char;
|
|
mb_head_off = dbcs_head_off;
|
|
} else {
|
|
mb_ptr2len = latin_ptr2len;
|
|
mb_ptr2len_len = latin_ptr2len_len;
|
|
mb_char2len = latin_char2len;
|
|
mb_char2bytes = latin_char2bytes;
|
|
mb_ptr2cells = latin_ptr2cells;
|
|
mb_ptr2cells_len = latin_ptr2cells_len;
|
|
mb_char2cells = latin_char2cells;
|
|
mb_off2cells = latin_off2cells;
|
|
mb_ptr2char = latin_ptr2char;
|
|
mb_head_off = latin_head_off;
|
|
}
|
|
|
|
/*
|
|
* Fill the mb_bytelen_tab[] for MB_BYTE2LEN().
|
|
*/
|
|
#ifdef LEN_FROM_CONV
|
|
/* When 'encoding' is different from the current locale mblen() won't
|
|
* work. Use conversion to "utf-8" instead. */
|
|
vimconv.vc_type = CONV_NONE;
|
|
if (enc_dbcs) {
|
|
p = enc_locale();
|
|
if (p == NULL || STRCMP(p, p_enc) != 0) {
|
|
convert_setup(&vimconv, p_enc, (char_u *)"utf-8");
|
|
vimconv.vc_fail = true;
|
|
}
|
|
xfree(p);
|
|
}
|
|
#endif
|
|
|
|
for (i = 0; i < 256; ++i) {
|
|
/* Our own function to reliably check the length of UTF-8 characters,
|
|
* independent of mblen(). */
|
|
if (enc_utf8)
|
|
n = utf8len_tab[i];
|
|
else if (enc_dbcs == 0)
|
|
n = 1;
|
|
else {
|
|
char buf[MB_MAXBYTES + 1];
|
|
if (i == NUL) /* just in case mblen() can't handle "" */
|
|
n = 1;
|
|
else {
|
|
buf[0] = i;
|
|
buf[1] = 0;
|
|
#ifdef LEN_FROM_CONV
|
|
if (vimconv.vc_type != CONV_NONE) {
|
|
/*
|
|
* string_convert() should fail when converting the first
|
|
* byte of a double-byte character.
|
|
*/
|
|
p = string_convert(&vimconv, (char_u *)buf, NULL);
|
|
if (p != NULL) {
|
|
xfree(p);
|
|
n = 1;
|
|
} else
|
|
n = 2;
|
|
} else
|
|
#endif
|
|
{
|
|
/*
|
|
* mblen() should return -1 for invalid (means the leading
|
|
* multibyte) character. However there are some platforms
|
|
* where mblen() returns 0 for invalid character.
|
|
* Therefore, following condition includes 0.
|
|
*/
|
|
ignored = mblen(NULL, 0); /* First reset the state. */
|
|
if (mblen(buf, (size_t)1) <= 0)
|
|
n = 2;
|
|
else
|
|
n = 1;
|
|
}
|
|
}
|
|
}
|
|
mb_bytelen_tab[i] = n;
|
|
}
|
|
|
|
#ifdef LEN_FROM_CONV
|
|
convert_setup(&vimconv, NULL, NULL);
|
|
#endif
|
|
|
|
/* The cell width depends on the type of multi-byte characters. */
|
|
(void)init_chartab();
|
|
|
|
/* When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] */
|
|
screenalloc(false);
|
|
|
|
#ifdef HAVE_WORKING_LIBINTL
|
|
/* GNU gettext 0.10.37 supports this feature: set the codeset used for
|
|
* translated messages independently from the current locale. */
|
|
(void)bind_textdomain_codeset(PROJECT_NAME,
|
|
enc_utf8 ? "utf-8" : (char *)p_enc);
|
|
#endif
|
|
|
|
|
|
/* Fire an autocommand to let people do custom font setup. This must be
|
|
* after Vim has been setup for the new encoding. */
|
|
apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf);
|
|
|
|
/* Need to reload spell dictionaries */
|
|
spell_reload();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Return the size of the BOM for the current buffer:
|
|
* 0 - no BOM
|
|
* 2 - UCS-2 or UTF-16 BOM
|
|
* 4 - UCS-4 BOM
|
|
* 3 - UTF-8 BOM
|
|
*/
|
|
int bomb_size(void)
|
|
{
|
|
int n = 0;
|
|
|
|
if (curbuf->b_p_bomb && !curbuf->b_p_bin) {
|
|
if (*curbuf->b_p_fenc == NUL) {
|
|
if (enc_utf8) {
|
|
if (enc_unicode != 0)
|
|
n = enc_unicode;
|
|
else
|
|
n = 3;
|
|
}
|
|
} else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0)
|
|
n = 3;
|
|
else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0
|
|
|| STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0)
|
|
n = 2;
|
|
else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0)
|
|
n = 4;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
/*
|
|
* Remove all BOM from "s" by moving remaining text.
|
|
*/
|
|
void remove_bom(char_u *s)
|
|
{
|
|
if (enc_utf8) {
|
|
char_u *p = s;
|
|
|
|
while ((p = vim_strbyte(p, 0xef)) != NULL) {
|
|
if (p[1] == 0xbb && p[2] == 0xbf)
|
|
STRMOVE(p, p + 3);
|
|
else
|
|
++p;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get class of pointer:
|
|
* 0 for blank or NUL
|
|
* 1 for punctuation
|
|
* 2 for an (ASCII) word character
|
|
* >2 for other word characters
|
|
*/
|
|
int mb_get_class(const char_u *p)
|
|
{
|
|
return mb_get_class_buf(p, curbuf);
|
|
}
|
|
|
|
int mb_get_class_buf(const char_u *p, buf_T *buf)
|
|
{
|
|
if (MB_BYTE2LEN(p[0]) == 1) {
|
|
if (p[0] == NUL || ascii_iswhite(p[0]))
|
|
return 0;
|
|
if (vim_iswordc_buf(p[0], buf))
|
|
return 2;
|
|
return 1;
|
|
}
|
|
if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL)
|
|
return dbcs_class(p[0], p[1]);
|
|
if (enc_utf8)
|
|
return utf_class(utf_ptr2char(p));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Get class of a double-byte character. This always returns 3 or bigger.
|
|
* TODO: Should return 1 for punctuation.
|
|
*/
|
|
int dbcs_class(unsigned lead, unsigned trail)
|
|
{
|
|
switch (enc_dbcs) {
|
|
/* please add classify routine for your language in here */
|
|
|
|
case DBCS_JPNU: /* ? */
|
|
case DBCS_JPN:
|
|
{
|
|
/* JIS code classification */
|
|
unsigned char lb = lead;
|
|
unsigned char tb = trail;
|
|
|
|
/* convert process code to JIS */
|
|
/*
|
|
* XXX: Code page identification can not use with all
|
|
* system! So, some other encoding information
|
|
* will be needed.
|
|
* In japanese: SJIS,EUC,UNICODE,(JIS)
|
|
* Note that JIS-code system don't use as
|
|
* process code in most system because it uses
|
|
* escape sequences(JIS is context depend encoding).
|
|
*/
|
|
/* assume process code is JAPANESE-EUC */
|
|
lb &= 0x7f;
|
|
tb &= 0x7f;
|
|
/* exceptions */
|
|
switch (lb << 8 | tb) {
|
|
case 0x2121: /* ZENKAKU space */
|
|
return 0;
|
|
case 0x2122: /* TOU-TEN (Japanese comma) */
|
|
case 0x2123: /* KU-TEN (Japanese period) */
|
|
case 0x2124: /* ZENKAKU comma */
|
|
case 0x2125: /* ZENKAKU period */
|
|
return 1;
|
|
case 0x213c: /* prolongedsound handled as KATAKANA */
|
|
return 13;
|
|
}
|
|
/* sieved by KU code */
|
|
switch (lb) {
|
|
case 0x21:
|
|
case 0x22:
|
|
/* special symbols */
|
|
return 10;
|
|
case 0x23:
|
|
/* alpha-numeric */
|
|
return 11;
|
|
case 0x24:
|
|
/* hiragana */
|
|
return 12;
|
|
case 0x25:
|
|
/* katakana */
|
|
return 13;
|
|
case 0x26:
|
|
/* greek */
|
|
return 14;
|
|
case 0x27:
|
|
/* russian */
|
|
return 15;
|
|
case 0x28:
|
|
/* lines */
|
|
return 16;
|
|
default:
|
|
/* kanji */
|
|
return 17;
|
|
}
|
|
}
|
|
|
|
case DBCS_KORU: /* ? */
|
|
case DBCS_KOR:
|
|
{
|
|
/* KS code classification */
|
|
unsigned char c1 = lead;
|
|
unsigned char c2 = trail;
|
|
|
|
/*
|
|
* 20 : Hangul
|
|
* 21 : Hanja
|
|
* 22 : Symbols
|
|
* 23 : Alpha-numeric/Roman Letter (Full width)
|
|
* 24 : Hangul Letter(Alphabet)
|
|
* 25 : Roman Numeral/Greek Letter
|
|
* 26 : Box Drawings
|
|
* 27 : Unit Symbols
|
|
* 28 : Circled/Parenthesized Letter
|
|
* 29 : Hiragana/Katakana
|
|
* 30 : Cyrillic Letter
|
|
*/
|
|
|
|
if (c1 >= 0xB0 && c1 <= 0xC8)
|
|
/* Hangul */
|
|
return 20;
|
|
|
|
else if (c1 >= 0xCA && c1 <= 0xFD)
|
|
/* Hanja */
|
|
return 21;
|
|
else switch (c1) {
|
|
case 0xA1:
|
|
case 0xA2:
|
|
/* Symbols */
|
|
return 22;
|
|
case 0xA3:
|
|
/* Alpha-numeric */
|
|
return 23;
|
|
case 0xA4:
|
|
/* Hangul Letter(Alphabet) */
|
|
return 24;
|
|
case 0xA5:
|
|
/* Roman Numeral/Greek Letter */
|
|
return 25;
|
|
case 0xA6:
|
|
/* Box Drawings */
|
|
return 26;
|
|
case 0xA7:
|
|
/* Unit Symbols */
|
|
return 27;
|
|
case 0xA8:
|
|
case 0xA9:
|
|
if (c2 <= 0xAF)
|
|
return 25; /* Roman Letter */
|
|
else if (c2 >= 0xF6)
|
|
return 22; /* Symbols */
|
|
else
|
|
/* Circled/Parenthesized Letter */
|
|
return 28;
|
|
case 0xAA:
|
|
case 0xAB:
|
|
/* Hiragana/Katakana */
|
|
return 29;
|
|
case 0xAC:
|
|
/* Cyrillic Letter */
|
|
return 30;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return 3;
|
|
}
|
|
|
|
/*
|
|
* mb_char2len() function pointer.
|
|
* Return length in bytes of character "c".
|
|
* Returns 1 for a single-byte character.
|
|
*/
|
|
int latin_char2len(int c)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int dbcs_char2len(int c)
|
|
{
|
|
if (c >= 0x100)
|
|
return 2;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* mb_char2bytes() function pointer.
|
|
* Convert a character to its bytes.
|
|
* Returns the length in bytes.
|
|
*/
|
|
int latin_char2bytes(int c, char_u *buf)
|
|
{
|
|
buf[0] = c;
|
|
return 1;
|
|
}
|
|
|
|
static int dbcs_char2bytes(int c, char_u *buf)
|
|
{
|
|
if (c >= 0x100) {
|
|
buf[0] = (unsigned)c >> 8;
|
|
buf[1] = c;
|
|
/* Never use a NUL byte, it causes lots of trouble. It's an invalid
|
|
* character anyway. */
|
|
if (buf[1] == NUL)
|
|
buf[1] = '\n';
|
|
return 2;
|
|
}
|
|
buf[0] = c;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* mb_ptr2len() function pointer.
|
|
* Get byte length of character at "*p" but stop at a NUL.
|
|
* For UTF-8 this includes following composing characters.
|
|
* Returns 0 when *p is NUL.
|
|
*/
|
|
int latin_ptr2len(const char_u *p)
|
|
{
|
|
return MB_BYTE2LEN(*p);
|
|
}
|
|
|
|
static int dbcs_ptr2len(const char_u *p)
|
|
{
|
|
int len;
|
|
|
|
/* Check if second byte is not missing. */
|
|
len = MB_BYTE2LEN(*p);
|
|
if (len == 2 && p[1] == NUL)
|
|
len = 1;
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* mb_ptr2len_len() function pointer.
|
|
* Like mb_ptr2len(), but limit to read "size" bytes.
|
|
* Returns 0 for an empty string.
|
|
* Returns 1 for an illegal char or an incomplete byte sequence.
|
|
*/
|
|
int latin_ptr2len_len(const char_u *p, int size)
|
|
{
|
|
if (size < 1 || *p == NUL)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int dbcs_ptr2len_len(const char_u *p, int size)
|
|
{
|
|
int len;
|
|
|
|
if (size < 1 || *p == NUL)
|
|
return 0;
|
|
if (size == 1)
|
|
return 1;
|
|
/* Check that second byte is not missing. */
|
|
len = MB_BYTE2LEN(*p);
|
|
if (len == 2 && p[1] == NUL)
|
|
len = 1;
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Return true if "c" is in "table".
|
|
*/
|
|
static bool intable(const struct interval *table, size_t n_items, int c)
|
|
{
|
|
int mid, bot, top;
|
|
|
|
/* first quick check for Latin1 etc. characters */
|
|
if (c < table[0].first)
|
|
return false;
|
|
|
|
/* binary search in table */
|
|
bot = 0;
|
|
top = (int)(n_items - 1);
|
|
while (top >= bot) {
|
|
mid = (bot + top) / 2;
|
|
if (table[mid].last < c)
|
|
bot = mid + 1;
|
|
else if (table[mid].first > c)
|
|
top = mid - 1;
|
|
else
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* For UTF-8 character "c" return 2 for a double-width character, 1 for others.
|
|
* Returns 4 or 6 for an unprintable character.
|
|
* Is only correct for characters >= 0x80.
|
|
* When p_ambw is "double", return 2 for a character with East Asian Width
|
|
* class 'A'(mbiguous).
|
|
*/
|
|
int utf_char2cells(int c)
|
|
{
|
|
if (c >= 0x100) {
|
|
#ifdef USE_WCHAR_FUNCTIONS
|
|
/*
|
|
* Assume the library function wcwidth() works better than our own
|
|
* stuff. It should return 1 for ambiguous width chars!
|
|
*/
|
|
int n = wcwidth(c);
|
|
|
|
if (n < 0)
|
|
return 6; /* unprintable, displays <xxxx> */
|
|
if (n > 1)
|
|
return n;
|
|
#else
|
|
if (!utf_printable(c))
|
|
return 6; /* unprintable, displays <xxxx> */
|
|
if (intable(doublewidth, ARRAY_SIZE(doublewidth), c))
|
|
return 2;
|
|
#endif
|
|
}
|
|
/* Characters below 0x100 are influenced by 'isprint' option */
|
|
else if (c >= 0x80 && !vim_isprintc(c))
|
|
return 4; /* unprintable, displays <xx> */
|
|
|
|
if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, ARRAY_SIZE(ambiguous), c))
|
|
return 2;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* mb_ptr2cells() function pointer.
|
|
* Return the number of display cells character at "*p" occupies.
|
|
* This doesn't take care of unprintable characters, use ptr2cells() for that.
|
|
*/
|
|
int latin_ptr2cells(const char_u *p)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int utf_ptr2cells(const char_u *p)
|
|
{
|
|
int c;
|
|
|
|
/* Need to convert to a wide character. */
|
|
if (*p >= 0x80) {
|
|
c = utf_ptr2char(p);
|
|
/* An illegal byte is displayed as <xx>. */
|
|
if (utf_ptr2len(p) == 1 || c == NUL)
|
|
return 4;
|
|
/* If the char is ASCII it must be an overlong sequence. */
|
|
if (c < 0x80)
|
|
return char2cells(c);
|
|
return utf_char2cells(c);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int dbcs_ptr2cells(const char_u *p)
|
|
{
|
|
/* Number of cells is equal to number of bytes, except for euc-jp when
|
|
* the first byte is 0x8e. */
|
|
if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
|
|
return 1;
|
|
return MB_BYTE2LEN(*p);
|
|
}
|
|
|
|
/*
|
|
* mb_ptr2cells_len() function pointer.
|
|
* Like mb_ptr2cells(), but limit string length to "size".
|
|
* For an empty string or truncated character returns 1.
|
|
*/
|
|
int latin_ptr2cells_len(const char_u *p, int size)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int utf_ptr2cells_len(const char_u *p, int size)
|
|
{
|
|
int c;
|
|
|
|
/* Need to convert to a wide character. */
|
|
if (size > 0 && *p >= 0x80) {
|
|
if (utf_ptr2len_len(p, size) < utf8len_tab[*p])
|
|
return 1; /* truncated */
|
|
c = utf_ptr2char(p);
|
|
/* An illegal byte is displayed as <xx>. */
|
|
if (utf_ptr2len(p) == 1 || c == NUL)
|
|
return 4;
|
|
/* If the char is ASCII it must be an overlong sequence. */
|
|
if (c < 0x80)
|
|
return char2cells(c);
|
|
return utf_char2cells(c);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int dbcs_ptr2cells_len(const char_u *p, int size)
|
|
{
|
|
/* Number of cells is equal to number of bytes, except for euc-jp when
|
|
* the first byte is 0x8e. */
|
|
if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e))
|
|
return 1;
|
|
return MB_BYTE2LEN(*p);
|
|
}
|
|
|
|
/*
|
|
* mb_char2cells() function pointer.
|
|
* Return the number of display cells character "c" occupies.
|
|
* Only takes care of multi-byte chars, not "^C" and such.
|
|
*/
|
|
int latin_char2cells(int c)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int dbcs_char2cells(int c)
|
|
{
|
|
/* Number of cells is equal to number of bytes, except for euc-jp when
|
|
* the first byte is 0x8e. */
|
|
if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e)
|
|
return 1;
|
|
/* use the first byte */
|
|
return MB_BYTE2LEN((unsigned)c >> 8);
|
|
}
|
|
|
|
/// Calculate the number of cells occupied by string `str`.
|
|
///
|
|
/// @param str The source string, may not be NULL, must be a NUL-terminated
|
|
/// string.
|
|
/// @return The number of cells occupied by string `str`
|
|
size_t mb_string2cells(const char_u *str)
|
|
{
|
|
size_t clen = 0;
|
|
|
|
for (const char_u *p = str; *p != NUL; p += (*mb_ptr2len)(p)) {
|
|
clen += (*mb_ptr2cells)(p);
|
|
}
|
|
|
|
return clen;
|
|
}
|
|
|
|
/*
|
|
* mb_off2cells() function pointer.
|
|
* Return number of display cells for char at ScreenLines[off].
|
|
* We make sure that the offset used is less than "max_off".
|
|
*/
|
|
int latin_off2cells(unsigned off, unsigned max_off)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int dbcs_off2cells(unsigned off, unsigned max_off)
|
|
{
|
|
/* never check beyond end of the line */
|
|
if (off >= max_off)
|
|
return 1;
|
|
|
|
/* Number of cells is equal to number of bytes, except for euc-jp when
|
|
* the first byte is 0x8e. */
|
|
if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
|
|
return 1;
|
|
return MB_BYTE2LEN(ScreenLines[off]);
|
|
}
|
|
|
|
int utf_off2cells(unsigned off, unsigned max_off)
|
|
{
|
|
return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1;
|
|
}
|
|
|
|
/*
|
|
* mb_ptr2char() function pointer.
|
|
* Convert a byte sequence into a character.
|
|
*/
|
|
int latin_ptr2char(const char_u *p)
|
|
{
|
|
return *p;
|
|
}
|
|
|
|
static int dbcs_ptr2char(const char_u *p)
|
|
{
|
|
if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL)
|
|
return (p[0] << 8) + p[1];
|
|
return *p;
|
|
}
|
|
|
|
/*
|
|
* Convert a UTF-8 byte sequence to a wide character.
|
|
* If the sequence is illegal or truncated by a NUL the first byte is
|
|
* returned.
|
|
* Does not include composing characters, of course.
|
|
*/
|
|
int utf_ptr2char(const char_u *p)
|
|
{
|
|
uint8_t len;
|
|
|
|
if (p[0] < 0x80) /* be quick for ASCII */
|
|
return p[0];
|
|
|
|
len = utf8len_tab_zero[p[0]];
|
|
if (len > 1 && (p[1] & 0xc0) == 0x80) {
|
|
if (len == 2)
|
|
return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f);
|
|
if ((p[2] & 0xc0) == 0x80) {
|
|
if (len == 3)
|
|
return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6)
|
|
+ (p[2] & 0x3f);
|
|
if ((p[3] & 0xc0) == 0x80) {
|
|
if (len == 4)
|
|
return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12)
|
|
+ ((p[2] & 0x3f) << 6) + (p[3] & 0x3f);
|
|
if ((p[4] & 0xc0) == 0x80) {
|
|
if (len == 5)
|
|
return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18)
|
|
+ ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6)
|
|
+ (p[4] & 0x3f);
|
|
if ((p[5] & 0xc0) == 0x80 && len == 6)
|
|
return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24)
|
|
+ ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12)
|
|
+ ((p[4] & 0x3f) << 6) + (p[5] & 0x3f);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* Illegal value, just return the first byte */
|
|
return p[0];
|
|
}
|
|
|
|
/*
|
|
* Convert a UTF-8 byte sequence to a wide character.
|
|
* String is assumed to be terminated by NUL or after "n" bytes, whichever
|
|
* comes first.
|
|
* The function is safe in the sense that it never accesses memory beyond the
|
|
* first "n" bytes of "s".
|
|
*
|
|
* On success, returns decoded codepoint, advances "s" to the beginning of
|
|
* next character and decreases "n" accordingly.
|
|
*
|
|
* If end of string was reached, returns 0 and, if "n" > 0, advances "s" past
|
|
* NUL byte.
|
|
*
|
|
* If byte sequence is illegal or incomplete, returns -1 and does not advance
|
|
* "s".
|
|
*/
|
|
static int utf_safe_read_char_adv(char_u **s, size_t *n)
|
|
{
|
|
int c;
|
|
|
|
if (*n == 0) /* end of buffer */
|
|
return 0;
|
|
|
|
uint8_t k = utf8len_tab_zero[**s];
|
|
|
|
if (k == 1) {
|
|
/* ASCII character or NUL */
|
|
(*n)--;
|
|
return *(*s)++;
|
|
}
|
|
|
|
if (k <= *n) {
|
|
/* We have a multibyte sequence and it isn't truncated by buffer
|
|
* limits so utf_ptr2char() is safe to use. Or the first byte is
|
|
* illegal (k=0), and it's also safe to use utf_ptr2char(). */
|
|
c = utf_ptr2char(*s);
|
|
|
|
/* On failure, utf_ptr2char() returns the first byte, so here we
|
|
* check equality with the first byte. The only non-ASCII character
|
|
* which equals the first byte of its own UTF-8 representation is
|
|
* U+00C3 (UTF-8: 0xC3 0x83), so need to check that special case too.
|
|
* It's safe even if n=1, else we would have k=2 > n. */
|
|
if (c != (int)(**s) || (c == 0xC3 && (*s)[1] == 0x83)) {
|
|
/* byte sequence was successfully decoded */
|
|
*s += k;
|
|
*n -= k;
|
|
return c;
|
|
}
|
|
}
|
|
|
|
/* byte sequence is incomplete or illegal */
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Get character at **pp and advance *pp to the next character.
|
|
* Note: composing characters are skipped!
|
|
*/
|
|
int mb_ptr2char_adv(char_u **pp)
|
|
{
|
|
int c;
|
|
|
|
c = (*mb_ptr2char)(*pp);
|
|
*pp += (*mb_ptr2len)(*pp);
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
* Get character at **pp and advance *pp to the next character.
|
|
* Note: composing characters are returned as separate characters.
|
|
*/
|
|
int mb_cptr2char_adv(char_u **pp)
|
|
{
|
|
int c;
|
|
|
|
c = (*mb_ptr2char)(*pp);
|
|
if (enc_utf8)
|
|
*pp += utf_ptr2len(*pp);
|
|
else
|
|
*pp += (*mb_ptr2len)(*pp);
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
* Check if the character pointed to by "p2" is a composing character when it
|
|
* comes after "p1". For Arabic sometimes "ab" is replaced with "c", which
|
|
* behaves like a composing character.
|
|
*/
|
|
bool utf_composinglike(const char_u *p1, const char_u *p2)
|
|
{
|
|
int c2;
|
|
|
|
c2 = utf_ptr2char(p2);
|
|
if (utf_iscomposing(c2))
|
|
return true;
|
|
if (!arabic_maycombine(c2))
|
|
return false;
|
|
return arabic_combine(utf_ptr2char(p1), c2);
|
|
}
|
|
|
|
/*
|
|
* Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO
|
|
* composing characters.
|
|
*
|
|
* @param [out] pcc: composing chars, last one is 0
|
|
*/
|
|
int utfc_ptr2char(const char_u *p, int *pcc)
|
|
{
|
|
int len;
|
|
int c;
|
|
int cc;
|
|
int i = 0;
|
|
|
|
c = utf_ptr2char(p);
|
|
len = utf_ptr2len(p);
|
|
|
|
/* Only accept a composing char when the first char isn't illegal. */
|
|
if ((len > 1 || *p < 0x80)
|
|
&& p[len] >= 0x80
|
|
&& UTF_COMPOSINGLIKE(p, p + len)) {
|
|
cc = utf_ptr2char(p + len);
|
|
for (;; ) {
|
|
pcc[i++] = cc;
|
|
if (i == MAX_MCO)
|
|
break;
|
|
len += utf_ptr2len(p + len);
|
|
if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len)))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i < MAX_MCO) /* last composing char must be 0 */
|
|
pcc[i] = 0;
|
|
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
* Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO
|
|
* composing characters. Use no more than p[maxlen].
|
|
*
|
|
* @param [out] pcc: composing chars, last one is 0
|
|
*/
|
|
int utfc_ptr2char_len(const char_u *p, int *pcc, int maxlen)
|
|
{
|
|
int len;
|
|
int c;
|
|
int cc;
|
|
int i = 0;
|
|
|
|
c = utf_ptr2char(p);
|
|
len = utf_ptr2len_len(p, maxlen);
|
|
/* Only accept a composing char when the first char isn't illegal. */
|
|
if ((len > 1 || *p < 0x80)
|
|
&& len < maxlen
|
|
&& p[len] >= 0x80
|
|
&& UTF_COMPOSINGLIKE(p, p + len)) {
|
|
cc = utf_ptr2char(p + len);
|
|
for (;; ) {
|
|
pcc[i++] = cc;
|
|
if (i == MAX_MCO)
|
|
break;
|
|
len += utf_ptr2len_len(p + len, maxlen - len);
|
|
if (len >= maxlen
|
|
|| p[len] < 0x80
|
|
|| !utf_iscomposing(cc = utf_ptr2char(p + len)))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i < MAX_MCO) /* last composing char must be 0 */
|
|
pcc[i] = 0;
|
|
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
* Convert the character at screen position "off" to a sequence of bytes.
|
|
* Includes the composing characters.
|
|
* "buf" must at least have the length MB_MAXBYTES + 1.
|
|
* Only to be used when ScreenLinesUC[off] != 0.
|
|
* Returns the produced number of bytes.
|
|
*/
|
|
int utfc_char2bytes(int off, char_u *buf)
|
|
{
|
|
int len;
|
|
int i;
|
|
|
|
len = utf_char2bytes(ScreenLinesUC[off], buf);
|
|
for (i = 0; i < Screen_mco; ++i) {
|
|
if (ScreenLinesC[i][off] == 0)
|
|
break;
|
|
len += utf_char2bytes(ScreenLinesC[i][off], buf + len);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Get the length of a UTF-8 byte sequence, not including any following
|
|
* composing characters.
|
|
* Returns 0 for "".
|
|
* Returns 1 for an illegal byte sequence.
|
|
*/
|
|
int utf_ptr2len(const char_u *p)
|
|
{
|
|
int len;
|
|
int i;
|
|
|
|
if (*p == NUL)
|
|
return 0;
|
|
len = utf8len_tab[*p];
|
|
for (i = 1; i < len; ++i)
|
|
if ((p[i] & 0xc0) != 0x80)
|
|
return 1;
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Return length of UTF-8 character, obtained from the first byte.
|
|
* "b" must be between 0 and 255!
|
|
* Returns 1 for an invalid first byte value.
|
|
*/
|
|
int utf_byte2len(int b)
|
|
{
|
|
return utf8len_tab[b];
|
|
}
|
|
|
|
/*
|
|
* Get the length of UTF-8 byte sequence "p[size]". Does not include any
|
|
* following composing characters.
|
|
* Returns 1 for "".
|
|
* Returns 1 for an illegal byte sequence (also in incomplete byte seq.).
|
|
* Returns number > "size" for an incomplete byte sequence.
|
|
* Never returns zero.
|
|
*/
|
|
int utf_ptr2len_len(const char_u *p, int size)
|
|
{
|
|
int len;
|
|
int i;
|
|
int m;
|
|
|
|
len = utf8len_tab[*p];
|
|
if (len == 1)
|
|
return 1; /* NUL, ascii or illegal lead byte */
|
|
if (len > size)
|
|
m = size; /* incomplete byte sequence. */
|
|
else
|
|
m = len;
|
|
for (i = 1; i < m; ++i)
|
|
if ((p[i] & 0xc0) != 0x80)
|
|
return 1;
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Return the number of bytes the UTF-8 encoding of the character at "p" takes.
|
|
* This includes following composing characters.
|
|
*/
|
|
int utfc_ptr2len(const char_u *p)
|
|
{
|
|
int len;
|
|
int b0 = *p;
|
|
int prevlen;
|
|
|
|
if (b0 == NUL)
|
|
return 0;
|
|
if (b0 < 0x80 && p[1] < 0x80) /* be quick for ASCII */
|
|
return 1;
|
|
|
|
/* Skip over first UTF-8 char, stopping at a NUL byte. */
|
|
len = utf_ptr2len(p);
|
|
|
|
/* Check for illegal byte. */
|
|
if (len == 1 && b0 >= 0x80)
|
|
return 1;
|
|
|
|
/*
|
|
* Check for composing characters. We can handle only the first six, but
|
|
* skip all of them (otherwise the cursor would get stuck).
|
|
*/
|
|
prevlen = 0;
|
|
for (;; ) {
|
|
if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len))
|
|
return len;
|
|
|
|
/* Skip over composing char */
|
|
prevlen = len;
|
|
len += utf_ptr2len(p + len);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return the number of bytes the UTF-8 encoding of the character at "p[size]"
|
|
* takes. This includes following composing characters.
|
|
* Returns 0 for an empty string.
|
|
* Returns 1 for an illegal char or an incomplete byte sequence.
|
|
*/
|
|
int utfc_ptr2len_len(const char_u *p, int size)
|
|
{
|
|
int len;
|
|
int prevlen;
|
|
|
|
if (size < 1 || *p == NUL)
|
|
return 0;
|
|
if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */
|
|
return 1;
|
|
|
|
/* Skip over first UTF-8 char, stopping at a NUL byte. */
|
|
len = utf_ptr2len_len(p, size);
|
|
|
|
/* Check for illegal byte and incomplete byte sequence. */
|
|
if ((len == 1 && p[0] >= 0x80) || len > size)
|
|
return 1;
|
|
|
|
/*
|
|
* Check for composing characters. We can handle only the first six, but
|
|
* skip all of them (otherwise the cursor would get stuck).
|
|
*/
|
|
prevlen = 0;
|
|
while (len < size) {
|
|
int len_next_char;
|
|
|
|
if (p[len] < 0x80)
|
|
break;
|
|
|
|
/*
|
|
* Next character length should not go beyond size to ensure that
|
|
* UTF_COMPOSINGLIKE(...) does not read beyond size.
|
|
*/
|
|
len_next_char = utf_ptr2len_len(p + len, size - len);
|
|
if (len_next_char > size - len)
|
|
break;
|
|
|
|
if (!UTF_COMPOSINGLIKE(p + prevlen, p + len))
|
|
break;
|
|
|
|
/* Skip over composing char */
|
|
prevlen = len;
|
|
len += len_next_char;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Return the number of bytes the UTF-8 encoding of character "c" takes.
|
|
* This does not include composing characters.
|
|
*/
|
|
int utf_char2len(int c)
|
|
{
|
|
if (c < 0x80)
|
|
return 1;
|
|
if (c < 0x800)
|
|
return 2;
|
|
if (c < 0x10000)
|
|
return 3;
|
|
if (c < 0x200000)
|
|
return 4;
|
|
if (c < 0x4000000)
|
|
return 5;
|
|
return 6;
|
|
}
|
|
|
|
/*
|
|
* Convert Unicode character "c" to UTF-8 string in "buf[]".
|
|
* Returns the number of bytes.
|
|
* This does not include composing characters.
|
|
*/
|
|
int utf_char2bytes(int c, char_u *buf)
|
|
{
|
|
if (c < 0x80) { /* 7 bits */
|
|
buf[0] = c;
|
|
return 1;
|
|
}
|
|
if (c < 0x800) { /* 11 bits */
|
|
buf[0] = 0xc0 + ((unsigned)c >> 6);
|
|
buf[1] = 0x80 + (c & 0x3f);
|
|
return 2;
|
|
}
|
|
if (c < 0x10000) { /* 16 bits */
|
|
buf[0] = 0xe0 + ((unsigned)c >> 12);
|
|
buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f);
|
|
buf[2] = 0x80 + (c & 0x3f);
|
|
return 3;
|
|
}
|
|
if (c < 0x200000) { /* 21 bits */
|
|
buf[0] = 0xf0 + ((unsigned)c >> 18);
|
|
buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f);
|
|
buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f);
|
|
buf[3] = 0x80 + (c & 0x3f);
|
|
return 4;
|
|
}
|
|
if (c < 0x4000000) { /* 26 bits */
|
|
buf[0] = 0xf8 + ((unsigned)c >> 24);
|
|
buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f);
|
|
buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f);
|
|
buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f);
|
|
buf[4] = 0x80 + (c & 0x3f);
|
|
return 5;
|
|
}
|
|
/* 31 bits */
|
|
buf[0] = 0xfc + ((unsigned)c >> 30);
|
|
buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f);
|
|
buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f);
|
|
buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f);
|
|
buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f);
|
|
buf[5] = 0x80 + (c & 0x3f);
|
|
return 6;
|
|
}
|
|
|
|
/*
|
|
* Return true if "c" is a composing UTF-8 character. This means it will be
|
|
* drawn on top of the preceding character.
|
|
* Based on code from Markus Kuhn.
|
|
*/
|
|
bool utf_iscomposing(int c)
|
|
{
|
|
return intable(combining, ARRAY_SIZE(combining), c);
|
|
}
|
|
|
|
/*
|
|
* Return true for characters that can be displayed in a normal way.
|
|
* Only for characters of 0x100 and above!
|
|
*/
|
|
bool utf_printable(int c)
|
|
{
|
|
#ifdef USE_WCHAR_FUNCTIONS
|
|
/*
|
|
* Assume the iswprint() library function works better than our own stuff.
|
|
*/
|
|
return iswprint(c);
|
|
#else
|
|
/* Sorted list of non-overlapping intervals.
|
|
* 0xd800-0xdfff is reserved for UTF-16, actually illegal. */
|
|
static struct interval nonprint[] =
|
|
{
|
|
{0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e},
|
|
{0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb},
|
|
{0xfffe, 0xffff}
|
|
};
|
|
|
|
return !intable(nonprint, ARRAY_SIZE(nonprint), c);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Get class of a Unicode character.
|
|
* 0: white space
|
|
* 1: punctuation
|
|
* 2 or bigger: some class of word character.
|
|
*/
|
|
int utf_class(int c)
|
|
{
|
|
/* sorted list of non-overlapping intervals */
|
|
static struct clinterval {
|
|
unsigned int first;
|
|
unsigned int last;
|
|
unsigned int class;
|
|
} classes[] =
|
|
{
|
|
{0x037e, 0x037e, 1}, /* Greek question mark */
|
|
{0x0387, 0x0387, 1}, /* Greek ano teleia */
|
|
{0x055a, 0x055f, 1}, /* Armenian punctuation */
|
|
{0x0589, 0x0589, 1}, /* Armenian full stop */
|
|
{0x05be, 0x05be, 1},
|
|
{0x05c0, 0x05c0, 1},
|
|
{0x05c3, 0x05c3, 1},
|
|
{0x05f3, 0x05f4, 1},
|
|
{0x060c, 0x060c, 1},
|
|
{0x061b, 0x061b, 1},
|
|
{0x061f, 0x061f, 1},
|
|
{0x066a, 0x066d, 1},
|
|
{0x06d4, 0x06d4, 1},
|
|
{0x0700, 0x070d, 1}, /* Syriac punctuation */
|
|
{0x0964, 0x0965, 1},
|
|
{0x0970, 0x0970, 1},
|
|
{0x0df4, 0x0df4, 1},
|
|
{0x0e4f, 0x0e4f, 1},
|
|
{0x0e5a, 0x0e5b, 1},
|
|
{0x0f04, 0x0f12, 1},
|
|
{0x0f3a, 0x0f3d, 1},
|
|
{0x0f85, 0x0f85, 1},
|
|
{0x104a, 0x104f, 1}, /* Myanmar punctuation */
|
|
{0x10fb, 0x10fb, 1}, /* Georgian punctuation */
|
|
{0x1361, 0x1368, 1}, /* Ethiopic punctuation */
|
|
{0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
|
|
{0x1680, 0x1680, 0},
|
|
{0x169b, 0x169c, 1},
|
|
{0x16eb, 0x16ed, 1},
|
|
{0x1735, 0x1736, 1},
|
|
{0x17d4, 0x17dc, 1}, /* Khmer punctuation */
|
|
{0x1800, 0x180a, 1}, /* Mongolian punctuation */
|
|
{0x2000, 0x200b, 0}, /* spaces */
|
|
{0x200c, 0x2027, 1}, /* punctuation and symbols */
|
|
{0x2028, 0x2029, 0},
|
|
{0x202a, 0x202e, 1}, /* punctuation and symbols */
|
|
{0x202f, 0x202f, 0},
|
|
{0x2030, 0x205e, 1}, /* punctuation and symbols */
|
|
{0x205f, 0x205f, 0},
|
|
{0x2060, 0x27ff, 1}, /* punctuation and symbols */
|
|
{0x2070, 0x207f, 0x2070}, /* superscript */
|
|
{0x2080, 0x2094, 0x2080}, /* subscript */
|
|
{0x20a0, 0x27ff, 1}, /* all kinds of symbols */
|
|
{0x2800, 0x28ff, 0x2800}, /* braille */
|
|
{0x2900, 0x2998, 1}, /* arrows, brackets, etc. */
|
|
{0x29d8, 0x29db, 1},
|
|
{0x29fc, 0x29fd, 1},
|
|
{0x2e00, 0x2e7f, 1}, /* supplemental punctuation */
|
|
{0x3000, 0x3000, 0}, /* ideographic space */
|
|
{0x3001, 0x3020, 1}, /* ideographic punctuation */
|
|
{0x3030, 0x3030, 1},
|
|
{0x303d, 0x303d, 1},
|
|
{0x3040, 0x309f, 0x3040}, /* Hiragana */
|
|
{0x30a0, 0x30ff, 0x30a0}, /* Katakana */
|
|
{0x3300, 0x9fff, 0x4e00}, /* CJK Ideographs */
|
|
{0xac00, 0xd7a3, 0xac00}, /* Hangul Syllables */
|
|
{0xf900, 0xfaff, 0x4e00}, /* CJK Ideographs */
|
|
{0xfd3e, 0xfd3f, 1},
|
|
{0xfe30, 0xfe6b, 1}, /* punctuation forms */
|
|
{0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
|
|
{0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
|
|
{0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
|
|
{0xff5b, 0xff65, 1}, /* half/fullwidth ASCII */
|
|
{0x20000, 0x2a6df, 0x4e00}, /* CJK Ideographs */
|
|
{0x2a700, 0x2b73f, 0x4e00}, /* CJK Ideographs */
|
|
{0x2b740, 0x2b81f, 0x4e00}, /* CJK Ideographs */
|
|
{0x2f800, 0x2fa1f, 0x4e00}, /* CJK Ideographs */
|
|
};
|
|
int bot = 0;
|
|
int top = ARRAY_SIZE(classes) - 1;
|
|
int mid;
|
|
|
|
/* First quick check for Latin1 characters, use 'iskeyword'. */
|
|
if (c < 0x100) {
|
|
if (c == ' ' || c == '\t' || c == NUL || c == 0xa0)
|
|
return 0; /* blank */
|
|
if (vim_iswordc(c))
|
|
return 2; /* word character */
|
|
return 1; /* punctuation */
|
|
}
|
|
|
|
/* binary search in table */
|
|
while (top >= bot) {
|
|
mid = (bot + top) / 2;
|
|
if (classes[mid].last < (unsigned int)c)
|
|
bot = mid + 1;
|
|
else if (classes[mid].first > (unsigned int)c)
|
|
top = mid - 1;
|
|
else
|
|
return (int)classes[mid].class;
|
|
}
|
|
|
|
/* most other characters are "word" characters */
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* Code for Unicode case-dependent operations. Based on notes in
|
|
* http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
|
|
* This code uses simple case folding, not full case folding.
|
|
* Last updated for Unicode 5.2.
|
|
*/
|
|
|
|
/*
|
|
* Generic conversion function for case operations.
|
|
* Return the converted equivalent of "a", which is a UCS-4 character. Use
|
|
* the given conversion "table". Uses binary search on "table".
|
|
*/
|
|
static int utf_convert(int a, const convertStruct *const table, size_t n_items)
|
|
{
|
|
size_t start, mid, end; /* indices into table */
|
|
|
|
start = 0;
|
|
end = n_items;
|
|
while (start < end) {
|
|
/* need to search further */
|
|
mid = (end + start) / 2;
|
|
if (table[mid].rangeEnd < a)
|
|
start = mid + 1;
|
|
else
|
|
end = mid;
|
|
}
|
|
if (start < n_items
|
|
&& table[start].rangeStart <= a
|
|
&& a <= table[start].rangeEnd
|
|
&& (a - table[start].rangeStart) % table[start].step == 0)
|
|
return a + table[start].offset;
|
|
else
|
|
return a;
|
|
}
|
|
|
|
/*
|
|
* Return the folded-case equivalent of "a", which is a UCS-4 character. Uses
|
|
* simple case folding.
|
|
*/
|
|
int utf_fold(int a)
|
|
{
|
|
return utf_convert(a, foldCase, ARRAY_SIZE(foldCase));
|
|
}
|
|
|
|
/*
|
|
* Return the upper-case equivalent of "a", which is a UCS-4 character. Use
|
|
* simple case folding.
|
|
*/
|
|
int utf_toupper(int a)
|
|
{
|
|
/* If 'casemap' contains "keepascii" use ASCII style toupper(). */
|
|
if (a < 128 && (cmp_flags & CMP_KEEPASCII))
|
|
return TOUPPER_ASC(a);
|
|
|
|
#if defined(__STDC_ISO_10646__)
|
|
/* If towupper() is available and handles Unicode, use it. */
|
|
if (!(cmp_flags & CMP_INTERNAL))
|
|
return towupper(a);
|
|
#endif
|
|
|
|
/* For characters below 128 use locale sensitive toupper(). */
|
|
if (a < 128)
|
|
return TOUPPER_LOC(a);
|
|
|
|
/* For any other characters use the above mapping table. */
|
|
return utf_convert(a, toUpper, ARRAY_SIZE(toUpper));
|
|
}
|
|
|
|
bool utf_islower(int a)
|
|
{
|
|
/* German sharp s is lower case but has no upper case equivalent. */
|
|
return (utf_toupper(a) != a) || a == 0xdf;
|
|
}
|
|
|
|
/*
|
|
* Return the lower-case equivalent of "a", which is a UCS-4 character. Use
|
|
* simple case folding.
|
|
*/
|
|
int utf_tolower(int a)
|
|
{
|
|
/* If 'casemap' contains "keepascii" use ASCII style tolower(). */
|
|
if (a < 128 && (cmp_flags & CMP_KEEPASCII))
|
|
return TOLOWER_ASC(a);
|
|
|
|
#if defined(__STDC_ISO_10646__)
|
|
/* If towlower() is available and handles Unicode, use it. */
|
|
if (!(cmp_flags & CMP_INTERNAL))
|
|
return towlower(a);
|
|
#endif
|
|
|
|
/* For characters below 128 use locale sensitive tolower(). */
|
|
if (a < 128)
|
|
return TOLOWER_LOC(a);
|
|
|
|
/* For any other characters use the above mapping table. */
|
|
return utf_convert(a, toLower, ARRAY_SIZE(toLower));
|
|
}
|
|
|
|
bool utf_isupper(int a)
|
|
{
|
|
return utf_tolower(a) != a;
|
|
}
|
|
|
|
static int utf_strnicmp(char_u *s1, char_u *s2, size_t n1, size_t n2)
|
|
{
|
|
int c1, c2, cdiff;
|
|
char_u buffer[6];
|
|
|
|
for (;; ) {
|
|
c1 = utf_safe_read_char_adv(&s1, &n1);
|
|
c2 = utf_safe_read_char_adv(&s2, &n2);
|
|
|
|
if (c1 <= 0 || c2 <= 0)
|
|
break;
|
|
|
|
if (c1 == c2)
|
|
continue;
|
|
|
|
cdiff = utf_fold(c1) - utf_fold(c2);
|
|
if (cdiff != 0)
|
|
return cdiff;
|
|
}
|
|
|
|
/* some string ended or has an incomplete/illegal character sequence */
|
|
|
|
if (c1 == 0 || c2 == 0) {
|
|
/* some string ended. shorter string is smaller */
|
|
if (c1 == 0 && c2 == 0)
|
|
return 0;
|
|
return c1 == 0 ? -1 : 1;
|
|
}
|
|
|
|
/* Continue with bytewise comparison to produce some result that
|
|
* would make comparison operations involving this function transitive.
|
|
*
|
|
* If only one string had an error, comparison should be made with
|
|
* folded version of the other string. In this case it is enough
|
|
* to fold just one character to determine the result of comparison. */
|
|
|
|
if (c1 != -1 && c2 == -1) {
|
|
n1 = utf_char2bytes(utf_fold(c1), buffer);
|
|
s1 = buffer;
|
|
} else if (c2 != -1 && c1 == -1) {
|
|
n2 = utf_char2bytes(utf_fold(c2), buffer);
|
|
s2 = buffer;
|
|
}
|
|
|
|
while (n1 > 0 && n2 > 0 && *s1 != NUL && *s2 != NUL) {
|
|
cdiff = (int)(*s1) - (int)(*s2);
|
|
if (cdiff != 0)
|
|
return cdiff;
|
|
|
|
s1++;
|
|
s2++;
|
|
n1--;
|
|
n2--;
|
|
}
|
|
|
|
if (n1 > 0 && *s1 == NUL)
|
|
n1 = 0;
|
|
if (n2 > 0 && *s2 == NUL)
|
|
n2 = 0;
|
|
|
|
if (n1 == 0 && n2 == 0)
|
|
return 0;
|
|
return n1 == 0 ? -1 : 1;
|
|
}
|
|
|
|
/*
|
|
* Version of strnicmp() that handles multi-byte characters.
|
|
* Needed for Big5, Shift-JIS and UTF-8 encoding. Other DBCS encodings can
|
|
* probably use strnicmp(), because there are no ASCII characters in the
|
|
* second byte.
|
|
* Returns zero if s1 and s2 are equal (ignoring case), the difference between
|
|
* two characters otherwise.
|
|
*/
|
|
int mb_strnicmp(char_u *s1, char_u *s2, size_t nn)
|
|
{
|
|
int i, l;
|
|
int cdiff;
|
|
int n = (int)nn;
|
|
|
|
if (enc_utf8) {
|
|
return utf_strnicmp(s1, s2, nn, nn);
|
|
} else {
|
|
for (i = 0; i < n; i += l) {
|
|
if (s1[i] == NUL && s2[i] == NUL) /* both strings end */
|
|
return 0;
|
|
|
|
l = (*mb_ptr2len)(s1 + i);
|
|
if (l <= 1) {
|
|
/* Single byte: first check normally, then with ignore case. */
|
|
if (s1[i] != s2[i]) {
|
|
cdiff = vim_tolower(s1[i]) - vim_tolower(s2[i]);
|
|
if (cdiff != 0)
|
|
return cdiff;
|
|
}
|
|
} else {
|
|
/* For non-Unicode multi-byte don't ignore case. */
|
|
if (l > n - i)
|
|
l = n - i;
|
|
cdiff = STRNCMP(s1 + i, s2 + i, l);
|
|
if (cdiff != 0)
|
|
return cdiff;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* We need to call mb_stricmp() even when we aren't dealing with a multi-byte
|
|
* encoding because mb_stricmp() takes care of all ascii and non-ascii
|
|
* encodings, including characters with umlauts in latin1, etc., while
|
|
* STRICMP() only handles the system locale version, which often does not
|
|
* handle non-ascii properly. */
|
|
int mb_stricmp(char_u *s1, char_u *s2)
|
|
{
|
|
return mb_strnicmp(s1, s2, MAXCOL);
|
|
}
|
|
|
|
/*
|
|
* "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what
|
|
* 'encoding' has been set to.
|
|
*/
|
|
void show_utf8(void)
|
|
{
|
|
int len;
|
|
int rlen = 0;
|
|
char_u *line;
|
|
int clen;
|
|
int i;
|
|
|
|
/* Get the byte length of the char under the cursor, including composing
|
|
* characters. */
|
|
line = get_cursor_pos_ptr();
|
|
len = utfc_ptr2len(line);
|
|
if (len == 0) {
|
|
MSG("NUL");
|
|
return;
|
|
}
|
|
|
|
clen = 0;
|
|
for (i = 0; i < len; ++i) {
|
|
if (clen == 0) {
|
|
/* start of (composing) character, get its length */
|
|
if (i > 0) {
|
|
STRCPY(IObuff + rlen, "+ ");
|
|
rlen += 2;
|
|
}
|
|
clen = utf_ptr2len(line + i);
|
|
}
|
|
sprintf((char *)IObuff + rlen, "%02x ",
|
|
(line[i] == NL) ? NUL : line[i]); /* NUL is stored as NL */
|
|
--clen;
|
|
rlen += (int)STRLEN(IObuff + rlen);
|
|
if (rlen > IOSIZE - 20)
|
|
break;
|
|
}
|
|
|
|
msg(IObuff);
|
|
}
|
|
|
|
/*
|
|
* mb_head_off() function pointer.
|
|
* Return offset from "p" to the first byte of the character it points into.
|
|
* If "p" points to the NUL at the end of the string return 0.
|
|
* Returns 0 when already at the first byte of a character.
|
|
*/
|
|
int latin_head_off(const char_u *base, const char_u *p)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int dbcs_head_off(const char_u *base, const char_u *p)
|
|
{
|
|
/* It can't be a trailing byte when not using DBCS, at the start of the
|
|
* string or the previous byte can't start a double-byte. */
|
|
if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL) {
|
|
return 0;
|
|
}
|
|
|
|
/* This is slow: need to start at the base and go forward until the
|
|
* byte we are looking for. Return 1 when we went past it, 0 otherwise. */
|
|
const char_u *q = base;
|
|
while (q < p) {
|
|
q += dbcs_ptr2len(q);
|
|
}
|
|
|
|
return (q == p) ? 0 : 1;
|
|
}
|
|
|
|
/*
|
|
* Special version of dbcs_head_off() that works for ScreenLines[], where
|
|
* single-width DBCS_JPNU characters are stored separately.
|
|
*/
|
|
int dbcs_screen_head_off(const char_u *base, const char_u *p)
|
|
{
|
|
/* It can't be a trailing byte when not using DBCS, at the start of the
|
|
* string or the previous byte can't start a double-byte.
|
|
* For euc-jp an 0x8e byte in the previous cell always means we have a
|
|
* lead byte in the current cell. */
|
|
if (p <= base
|
|
|| (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e)
|
|
|| MB_BYTE2LEN(p[-1]) == 1
|
|
|| *p == NUL)
|
|
return 0;
|
|
|
|
/* This is slow: need to start at the base and go forward until the
|
|
* byte we are looking for. Return 1 when we went past it, 0 otherwise.
|
|
* For DBCS_JPNU look out for 0x8e, which means the second byte is not
|
|
* stored as the next byte. */
|
|
const char_u *q = base;
|
|
while (q < p) {
|
|
if (enc_dbcs == DBCS_JPNU && *q == 0x8e) {
|
|
++q;
|
|
}
|
|
else {
|
|
q += dbcs_ptr2len(q);
|
|
}
|
|
}
|
|
|
|
return (q == p) ? 0 : 1;
|
|
}
|
|
|
|
int utf_head_off(const char_u *base, const char_u *p)
|
|
{
|
|
int c;
|
|
int len;
|
|
|
|
if (*p < 0x80) /* be quick for ASCII */
|
|
return 0;
|
|
|
|
/* Skip backwards over trailing bytes: 10xx.xxxx
|
|
* Skip backwards again if on a composing char. */
|
|
const char_u *q;
|
|
for (q = p;; --q) {
|
|
/* Move s to the last byte of this char. */
|
|
const char_u *s;
|
|
for (s = q; (s[1] & 0xc0) == 0x80; ++s) {}
|
|
|
|
/* Move q to the first byte of this char. */
|
|
while (q > base && (*q & 0xc0) == 0x80)
|
|
--q;
|
|
/* Check for illegal sequence. Do allow an illegal byte after where we
|
|
* started. */
|
|
len = utf8len_tab[*q];
|
|
if (len != (int)(s - q + 1) && len != (int)(p - q + 1))
|
|
return 0;
|
|
|
|
if (q <= base)
|
|
break;
|
|
|
|
c = utf_ptr2char(q);
|
|
if (utf_iscomposing(c))
|
|
continue;
|
|
|
|
if (arabic_maycombine(c)) {
|
|
/* Advance to get a sneak-peak at the next char */
|
|
const char_u *j = q;
|
|
--j;
|
|
/* Move j to the first byte of this char. */
|
|
while (j > base && (*j & 0xc0) == 0x80)
|
|
--j;
|
|
if (arabic_combine(utf_ptr2char(j), c))
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return (int)(p - q);
|
|
}
|
|
|
|
/*
|
|
* Copy a character from "*fp" to "*tp" and advance the pointers.
|
|
*/
|
|
void mb_copy_char(const char_u **fp, char_u **tp)
|
|
{
|
|
int l = (*mb_ptr2len)(*fp);
|
|
|
|
memmove(*tp, *fp, (size_t)l);
|
|
*tp += l;
|
|
*fp += l;
|
|
}
|
|
|
|
/*
|
|
* Return the offset from "p" to the first byte of a character. When "p" is
|
|
* at the start of a character 0 is returned, otherwise the offset to the next
|
|
* character. Can start anywhere in a stream of bytes.
|
|
*/
|
|
int mb_off_next(char_u *base, char_u *p)
|
|
{
|
|
int i;
|
|
int j;
|
|
|
|
if (enc_utf8) {
|
|
if (*p < 0x80) /* be quick for ASCII */
|
|
return 0;
|
|
|
|
/* Find the next character that isn't 10xx.xxxx */
|
|
for (i = 0; (p[i] & 0xc0) == 0x80; ++i)
|
|
;
|
|
if (i > 0) {
|
|
/* Check for illegal sequence. */
|
|
for (j = 0; p - j > base; ++j)
|
|
if ((p[-j] & 0xc0) != 0x80)
|
|
break;
|
|
if (utf8len_tab[p[-j]] != i + j)
|
|
return 0;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
/* Only need to check if we're on a trail byte, it doesn't matter if we
|
|
* want the offset to the next or current character. */
|
|
return (*mb_head_off)(base, p);
|
|
}
|
|
|
|
/*
|
|
* Return the offset from "p" to the last byte of the character it points
|
|
* into. Can start anywhere in a stream of bytes.
|
|
*/
|
|
int mb_tail_off(char_u *base, char_u *p)
|
|
{
|
|
int i;
|
|
int j;
|
|
|
|
if (*p == NUL)
|
|
return 0;
|
|
|
|
if (enc_utf8) {
|
|
/* Find the last character that is 10xx.xxxx */
|
|
for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i)
|
|
;
|
|
/* Check for illegal sequence. */
|
|
for (j = 0; p - j > base; ++j)
|
|
if ((p[-j] & 0xc0) != 0x80)
|
|
break;
|
|
if (utf8len_tab[p[-j]] != i + j + 1)
|
|
return 0;
|
|
return i;
|
|
}
|
|
|
|
/* It can't be the first byte if a double-byte when not using DBCS, at the
|
|
* end of the string or the byte can't start a double-byte. */
|
|
if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1)
|
|
return 0;
|
|
|
|
/* Return 1 when on the lead byte, 0 when on the tail byte. */
|
|
return 1 - dbcs_head_off(base, p);
|
|
}
|
|
|
|
/*
|
|
* Find the next illegal byte sequence.
|
|
*/
|
|
void utf_find_illegal(void)
|
|
{
|
|
pos_T pos = curwin->w_cursor;
|
|
char_u *p;
|
|
int len;
|
|
vimconv_T vimconv;
|
|
char_u *tofree = NULL;
|
|
|
|
vimconv.vc_type = CONV_NONE;
|
|
if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT)) {
|
|
/* 'encoding' is "utf-8" but we are editing a 8-bit encoded file,
|
|
* possibly a utf-8 file with illegal bytes. Setup for conversion
|
|
* from utf-8 to 'fileencoding'. */
|
|
convert_setup(&vimconv, p_enc, curbuf->b_p_fenc);
|
|
}
|
|
|
|
curwin->w_cursor.coladd = 0;
|
|
for (;; ) {
|
|
p = get_cursor_pos_ptr();
|
|
if (vimconv.vc_type != CONV_NONE) {
|
|
xfree(tofree);
|
|
tofree = string_convert(&vimconv, p, NULL);
|
|
if (tofree == NULL)
|
|
break;
|
|
p = tofree;
|
|
}
|
|
|
|
while (*p != NUL) {
|
|
/* Illegal means that there are not enough trail bytes (checked by
|
|
* utf_ptr2len()) or too many of them (overlong sequence). */
|
|
len = utf_ptr2len(p);
|
|
if (*p >= 0x80 && (len == 1
|
|
|| utf_char2len(utf_ptr2char(p)) != len)) {
|
|
if (vimconv.vc_type == CONV_NONE)
|
|
curwin->w_cursor.col += (colnr_T)(p - get_cursor_pos_ptr());
|
|
else {
|
|
int l;
|
|
|
|
len = (int)(p - tofree);
|
|
for (p = get_cursor_pos_ptr(); *p != NUL && len-- > 0; p += l) {
|
|
l = utf_ptr2len(p);
|
|
curwin->w_cursor.col += l;
|
|
}
|
|
}
|
|
goto theend;
|
|
}
|
|
p += len;
|
|
}
|
|
if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
|
|
break;
|
|
++curwin->w_cursor.lnum;
|
|
curwin->w_cursor.col = 0;
|
|
}
|
|
|
|
/* didn't find it: don't move and beep */
|
|
curwin->w_cursor = pos;
|
|
beep_flush();
|
|
|
|
theend:
|
|
xfree(tofree);
|
|
convert_setup(&vimconv, NULL, NULL);
|
|
}
|
|
|
|
/*
|
|
* If the cursor moves on an trail byte, set the cursor on the lead byte.
|
|
* Thus it moves left if necessary.
|
|
*/
|
|
void mb_adjust_cursor(void)
|
|
{
|
|
mb_adjustpos(curbuf, &curwin->w_cursor);
|
|
}
|
|
|
|
/*
|
|
* Adjust position "*lp" to point to the first byte of a multi-byte character.
|
|
* If it points to a tail byte it's moved backwards to the head byte.
|
|
*/
|
|
void mb_adjustpos(buf_T *buf, pos_T *lp)
|
|
{
|
|
char_u *p;
|
|
|
|
if (lp->col > 0
|
|
|| lp->coladd > 1
|
|
) {
|
|
p = ml_get_buf(buf, lp->lnum, FALSE);
|
|
lp->col -= (*mb_head_off)(p, p + lp->col);
|
|
/* Reset "coladd" when the cursor would be on the right half of a
|
|
* double-wide character. */
|
|
if (lp->coladd == 1
|
|
&& p[lp->col] != TAB
|
|
&& vim_isprintc((*mb_ptr2char)(p + lp->col))
|
|
&& ptr2cells(p + lp->col) > 1)
|
|
lp->coladd = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return a pointer to the character before "*p", if there is one.
|
|
*/
|
|
char_u * mb_prevptr(
|
|
char_u *line, /* start of the string */
|
|
char_u *p
|
|
)
|
|
{
|
|
if (p > line)
|
|
mb_ptr_back(line, p);
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* Return the character length of "str". Each multi-byte character (with
|
|
* following composing characters) counts as one.
|
|
*/
|
|
int mb_charlen(char_u *str)
|
|
{
|
|
char_u *p = str;
|
|
int count;
|
|
|
|
if (p == NULL)
|
|
return 0;
|
|
|
|
for (count = 0; *p != NUL; count++)
|
|
p += (*mb_ptr2len)(p);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Like mb_charlen() but for a string with specified length.
|
|
*/
|
|
int mb_charlen_len(char_u *str, int len)
|
|
{
|
|
char_u *p = str;
|
|
int count;
|
|
|
|
for (count = 0; *p != NUL && p < str + len; count++)
|
|
p += (*mb_ptr2len)(p);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Try to un-escape a multi-byte character.
|
|
* Used for the "to" and "from" part of a mapping.
|
|
* Return the un-escaped string if it is a multi-byte character, and advance
|
|
* "pp" to just after the bytes that formed it.
|
|
* Return NULL if no multi-byte char was found.
|
|
*/
|
|
char_u * mb_unescape(char_u **pp)
|
|
{
|
|
static char_u buf[6];
|
|
int n;
|
|
int m = 0;
|
|
char_u *str = *pp;
|
|
|
|
/* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI
|
|
* KS_EXTRA KE_CSI to CSI.
|
|
* Maximum length of a utf-8 character is 4 bytes. */
|
|
for (n = 0; str[n] != NUL && m < 4; ++n) {
|
|
if (str[n] == K_SPECIAL
|
|
&& str[n + 1] == KS_SPECIAL
|
|
&& str[n + 2] == KE_FILLER) {
|
|
buf[m++] = K_SPECIAL;
|
|
n += 2;
|
|
} else if ((str[n] == K_SPECIAL
|
|
)
|
|
&& str[n + 1] == KS_EXTRA
|
|
&& str[n + 2] == (int)KE_CSI) {
|
|
buf[m++] = CSI;
|
|
n += 2;
|
|
} else if (str[n] == K_SPECIAL
|
|
)
|
|
break; /* a special key can't be a multibyte char */
|
|
else
|
|
buf[m++] = str[n];
|
|
buf[m] = NUL;
|
|
|
|
/* Return a multi-byte character if it's found. An illegal sequence
|
|
* will result in a 1 here. */
|
|
if ((*mb_ptr2len)(buf) > 1) {
|
|
*pp = str + n + 1;
|
|
return buf;
|
|
}
|
|
|
|
/* Bail out quickly for ASCII. */
|
|
if (buf[0] < 128)
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Return true if the character at "row"/"col" on the screen is the left side
|
|
* of a double-width character.
|
|
* Caller must make sure "row" and "col" are not invalid!
|
|
*/
|
|
bool mb_lefthalve(int row, int col)
|
|
{
|
|
return (*mb_off2cells)(LineOffset[row] + col,
|
|
LineOffset[row] + screen_Columns) > 1;
|
|
}
|
|
|
|
/*
|
|
* Correct a position on the screen, if it's the right half of a double-wide
|
|
* char move it to the left half. Returns the corrected column.
|
|
*/
|
|
int mb_fix_col(int col, int row)
|
|
{
|
|
col = check_col(col);
|
|
row = check_row(row);
|
|
if (has_mbyte && ScreenLines != NULL && col > 0
|
|
&& ((enc_dbcs
|
|
&& ScreenLines[LineOffset[row] + col] != NUL
|
|
&& dbcs_screen_head_off(ScreenLines + LineOffset[row],
|
|
ScreenLines + LineOffset[row] + col))
|
|
|| (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0)))
|
|
return col - 1;
|
|
return col;
|
|
}
|
|
|
|
|
|
/*
|
|
* Skip the Vim specific head of a 'encoding' name.
|
|
*/
|
|
char_u * enc_skip(char_u *p)
|
|
{
|
|
if (STRNCMP(p, "2byte-", 6) == 0)
|
|
return p + 6;
|
|
if (STRNCMP(p, "8bit-", 5) == 0)
|
|
return p + 5;
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* Find the canonical name for encoding "enc".
|
|
* When the name isn't recognized, returns "enc" itself, but with all lower
|
|
* case characters and '_' replaced with '-'.
|
|
* Returns an allocated string.
|
|
*/
|
|
char_u *enc_canonize(char_u *enc) FUNC_ATTR_NONNULL_RET
|
|
{
|
|
char_u *p, *s;
|
|
int i;
|
|
|
|
if (STRCMP(enc, "default") == 0) {
|
|
// Use the default encoding as found by set_init_1().
|
|
return vim_strsave(fenc_default);
|
|
}
|
|
|
|
/* copy "enc" to allocated memory, with room for two '-' */
|
|
char_u *r = xmalloc(STRLEN(enc) + 3);
|
|
/* Make it all lower case and replace '_' with '-'. */
|
|
p = r;
|
|
for (s = enc; *s != NUL; ++s) {
|
|
if (*s == '_')
|
|
*p++ = '-';
|
|
else
|
|
*p++ = TOLOWER_ASC(*s);
|
|
}
|
|
*p = NUL;
|
|
|
|
/* Skip "2byte-" and "8bit-". */
|
|
p = enc_skip(r);
|
|
|
|
/* Change "microsoft-cp" to "cp". Used in some spell files. */
|
|
if (STRNCMP(p, "microsoft-cp", 12) == 0)
|
|
STRMOVE(p, p + 10);
|
|
|
|
/* "iso8859" -> "iso-8859" */
|
|
if (STRNCMP(p, "iso8859", 7) == 0) {
|
|
STRMOVE(p + 4, p + 3);
|
|
p[3] = '-';
|
|
}
|
|
|
|
/* "iso-8859n" -> "iso-8859-n" */
|
|
if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-') {
|
|
STRMOVE(p + 9, p + 8);
|
|
p[8] = '-';
|
|
}
|
|
|
|
/* "latin-N" -> "latinN" */
|
|
if (STRNCMP(p, "latin-", 6) == 0)
|
|
STRMOVE(p + 5, p + 6);
|
|
|
|
if (enc_canon_search(p) >= 0) {
|
|
/* canonical name can be used unmodified */
|
|
if (p != r)
|
|
STRMOVE(r, p);
|
|
} else if ((i = enc_alias_search(p)) >= 0) {
|
|
/* alias recognized, get canonical name */
|
|
xfree(r);
|
|
r = vim_strsave((char_u *)enc_canon_table[i].name);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Search for an encoding alias of "name".
|
|
* Returns -1 when not found.
|
|
*/
|
|
static int enc_alias_search(char_u *name)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; enc_alias_table[i].name != NULL; ++i)
|
|
if (STRCMP(name, enc_alias_table[i].name) == 0)
|
|
return enc_alias_table[i].canon;
|
|
return -1;
|
|
}
|
|
|
|
|
|
#ifdef HAVE_LANGINFO_H
|
|
# include <langinfo.h>
|
|
#endif
|
|
|
|
/*
|
|
* Get the canonicalized encoding of the current locale.
|
|
* Returns an allocated string when successful, NULL when not.
|
|
*/
|
|
char_u * enc_locale(void)
|
|
{
|
|
int i;
|
|
char buf[50];
|
|
|
|
const char *s;
|
|
# ifdef HAVE_NL_LANGINFO_CODESET
|
|
if (!(s = nl_langinfo(CODESET)) || *s == NUL)
|
|
# endif
|
|
{
|
|
# if defined(HAVE_LOCALE_H)
|
|
if (!(s = setlocale(LC_CTYPE, NULL)) || *s == NUL)
|
|
# endif
|
|
{
|
|
if ((s = os_getenv("LC_ALL"))) {
|
|
if ((s = os_getenv("LC_CTYPE"))) {
|
|
s = os_getenv("LANG");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!s) {
|
|
return NULL;
|
|
}
|
|
|
|
/* The most generic locale format is:
|
|
* language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]]
|
|
* If there is a '.' remove the part before it.
|
|
* if there is something after the codeset, remove it.
|
|
* Make the name lowercase and replace '_' with '-'.
|
|
* Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn",
|
|
* "ko_KR.EUC" == "euc-kr"
|
|
*/
|
|
const char *p = (char *)vim_strchr((char_u *)s, '.');
|
|
if (p != NULL) {
|
|
if (p > s + 2 && !STRNICMP(p + 1, "EUC", 3)
|
|
&& !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_') {
|
|
/* copy "XY.EUC" to "euc-XY" to buf[10] */
|
|
strcpy(buf + 10, "euc-");
|
|
buf[14] = p[-2];
|
|
buf[15] = p[-1];
|
|
buf[16] = 0;
|
|
s = buf + 10;
|
|
} else
|
|
s = p + 1;
|
|
}
|
|
for (i = 0; s[i] != NUL && i < (int)sizeof(buf) - 1; ++i) {
|
|
if (s[i] == '_' || s[i] == '-')
|
|
buf[i] = '-';
|
|
else if (isalnum((int)s[i]))
|
|
buf[i] = TOLOWER_ASC(s[i]);
|
|
else
|
|
break;
|
|
}
|
|
buf[i] = NUL;
|
|
|
|
return enc_canonize((char_u *)buf);
|
|
}
|
|
|
|
# if defined(USE_ICONV)
|
|
|
|
|
|
/*
|
|
* Call iconv_open() with a check if iconv() works properly (there are broken
|
|
* versions).
|
|
* Returns (void *)-1 if failed.
|
|
* (should return iconv_t, but that causes problems with prototypes).
|
|
*/
|
|
void * my_iconv_open(char_u *to, char_u *from)
|
|
{
|
|
iconv_t fd;
|
|
#define ICONV_TESTLEN 400
|
|
char_u tobuf[ICONV_TESTLEN];
|
|
char *p;
|
|
size_t tolen;
|
|
static WorkingStatus iconv_working = kUnknown;
|
|
|
|
if (iconv_working == kBroken)
|
|
return (void *)-1; /* detected a broken iconv() previously */
|
|
|
|
#ifdef DYNAMIC_ICONV
|
|
/* Check if the iconv.dll can be found. */
|
|
if (!iconv_enabled(true))
|
|
return (void *)-1;
|
|
#endif
|
|
|
|
fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from));
|
|
|
|
if (fd != (iconv_t)-1 && iconv_working == kUnknown) {
|
|
/*
|
|
* Do a dummy iconv() call to check if it actually works. There is a
|
|
* version of iconv() on Linux that is broken. We can't ignore it,
|
|
* because it's wide-spread. The symptoms are that after outputting
|
|
* the initial shift state the "to" pointer is NULL and conversion
|
|
* stops for no apparent reason after about 8160 characters.
|
|
*/
|
|
p = (char *)tobuf;
|
|
tolen = ICONV_TESTLEN;
|
|
(void)iconv(fd, NULL, NULL, &p, &tolen);
|
|
if (p == NULL) {
|
|
iconv_working = kBroken;
|
|
iconv_close(fd);
|
|
fd = (iconv_t)-1;
|
|
} else
|
|
iconv_working = kWorking;
|
|
}
|
|
|
|
return (void *)fd;
|
|
}
|
|
|
|
/*
|
|
* Convert the string "str[slen]" with iconv().
|
|
* If "unconvlenp" is not NULL handle the string ending in an incomplete
|
|
* sequence and set "*unconvlenp" to the length of it.
|
|
* Returns the converted string in allocated memory. NULL for an error.
|
|
* If resultlenp is not NULL, sets it to the result length in bytes.
|
|
*/
|
|
static char_u * iconv_string(vimconv_T *vcp, char_u *str, size_t slen,
|
|
size_t *unconvlenp, size_t *resultlenp)
|
|
{
|
|
const char *from;
|
|
size_t fromlen;
|
|
char *to;
|
|
size_t tolen;
|
|
size_t len = 0;
|
|
size_t done = 0;
|
|
char_u *result = NULL;
|
|
char_u *p;
|
|
int l;
|
|
|
|
from = (char *)str;
|
|
fromlen = slen;
|
|
for (;; ) {
|
|
if (len == 0 || ICONV_ERRNO == ICONV_E2BIG) {
|
|
/* Allocate enough room for most conversions. When re-allocating
|
|
* increase the buffer size. */
|
|
len = len + fromlen * 2 + 40;
|
|
p = xmalloc(len);
|
|
if (done > 0)
|
|
memmove(p, result, done);
|
|
xfree(result);
|
|
result = p;
|
|
}
|
|
|
|
to = (char *)result + done;
|
|
tolen = len - done - 2;
|
|
/* Avoid a warning for systems with a wrong iconv() prototype by
|
|
* casting the second argument to void *. */
|
|
if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen) != SIZE_MAX) {
|
|
/* Finished, append a NUL. */
|
|
*to = NUL;
|
|
break;
|
|
}
|
|
|
|
/* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded
|
|
* iconv library may use one of them. */
|
|
if (!vcp->vc_fail && unconvlenp != NULL
|
|
&& (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) {
|
|
/* Handle an incomplete sequence at the end. */
|
|
*to = NUL;
|
|
*unconvlenp = fromlen;
|
|
break;
|
|
}
|
|
/* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded
|
|
* iconv library may use one of them. */
|
|
else if (!vcp->vc_fail
|
|
&& (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ
|
|
|| ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) {
|
|
/* Can't convert: insert a '?' and skip a character. This assumes
|
|
* conversion from 'encoding' to something else. In other
|
|
* situations we don't know what to skip anyway. */
|
|
*to++ = '?';
|
|
if ((*mb_ptr2cells)((char_u *)from) > 1)
|
|
*to++ = '?';
|
|
if (enc_utf8)
|
|
l = utfc_ptr2len_len((const char_u *)from, (int)fromlen);
|
|
else {
|
|
l = (*mb_ptr2len)((char_u *)from);
|
|
if (l > (int)fromlen)
|
|
l = (int)fromlen;
|
|
}
|
|
from += l;
|
|
fromlen -= l;
|
|
} else if (ICONV_ERRNO != ICONV_E2BIG) {
|
|
/* conversion failed */
|
|
xfree(result);
|
|
result = NULL;
|
|
break;
|
|
}
|
|
/* Not enough room or skipping illegal sequence. */
|
|
done = to - (char *)result;
|
|
}
|
|
|
|
if (resultlenp != NULL && result != NULL)
|
|
*resultlenp = (size_t)(to - (char *)result);
|
|
return result;
|
|
}
|
|
|
|
# if defined(DYNAMIC_ICONV)
|
|
/*
|
|
* Dynamically load the "iconv.dll" on Win32.
|
|
*/
|
|
|
|
#ifndef DYNAMIC_ICONV /* just generating prototypes */
|
|
# define HINSTANCE int
|
|
#endif
|
|
static HINSTANCE hIconvDLL = 0;
|
|
static HINSTANCE hMsvcrtDLL = 0;
|
|
|
|
# ifndef DYNAMIC_ICONV_DLL
|
|
# define DYNAMIC_ICONV_DLL "iconv.dll"
|
|
# define DYNAMIC_ICONV_DLL_ALT "libiconv.dll"
|
|
# endif
|
|
# ifndef DYNAMIC_MSVCRT_DLL
|
|
# define DYNAMIC_MSVCRT_DLL "msvcrt.dll"
|
|
# endif
|
|
|
|
/*
|
|
* Get the address of 'funcname' which is imported by 'hInst' DLL.
|
|
*/
|
|
static void * get_iconv_import_func(HINSTANCE hInst,
|
|
const char *funcname)
|
|
{
|
|
PBYTE pImage = (PBYTE)hInst;
|
|
PIMAGE_DOS_HEADER pDOS = (PIMAGE_DOS_HEADER)hInst;
|
|
PIMAGE_NT_HEADERS pPE;
|
|
PIMAGE_IMPORT_DESCRIPTOR pImpDesc;
|
|
PIMAGE_THUNK_DATA pIAT; /* Import Address Table */
|
|
PIMAGE_THUNK_DATA pINT; /* Import Name Table */
|
|
PIMAGE_IMPORT_BY_NAME pImpName;
|
|
|
|
if (pDOS->e_magic != IMAGE_DOS_SIGNATURE)
|
|
return NULL;
|
|
pPE = (PIMAGE_NT_HEADERS)(pImage + pDOS->e_lfanew);
|
|
if (pPE->Signature != IMAGE_NT_SIGNATURE)
|
|
return NULL;
|
|
pImpDesc = (PIMAGE_IMPORT_DESCRIPTOR)(pImage
|
|
+ pPE->OptionalHeader.DataDirectory[
|
|
IMAGE_DIRECTORY_ENTRY_IMPORT]
|
|
.VirtualAddress);
|
|
for (; pImpDesc->FirstThunk; ++pImpDesc) {
|
|
if (!pImpDesc->OriginalFirstThunk)
|
|
continue;
|
|
pIAT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->FirstThunk);
|
|
pINT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->OriginalFirstThunk);
|
|
for (; pIAT->u1.Function; ++pIAT, ++pINT) {
|
|
if (IMAGE_SNAP_BY_ORDINAL(pINT->u1.Ordinal))
|
|
continue;
|
|
pImpName = (PIMAGE_IMPORT_BY_NAME)(pImage
|
|
+ (UINT_PTR)(pINT->u1.AddressOfData));
|
|
if (strcmp(pImpName->Name, funcname) == 0)
|
|
return (void *)pIAT->u1.Function;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Try opening the iconv.dll and return TRUE if iconv() can be used.
|
|
*/
|
|
bool iconv_enabled(bool verbose)
|
|
{
|
|
if (hIconvDLL != 0 && hMsvcrtDLL != 0)
|
|
return true;
|
|
hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL);
|
|
if (hIconvDLL == 0) /* sometimes it's called libiconv.dll */
|
|
hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT);
|
|
if (hIconvDLL != 0)
|
|
hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL);
|
|
if (hIconvDLL == 0 || hMsvcrtDLL == 0) {
|
|
/* Only give the message when 'verbose' is set, otherwise it might be
|
|
* done whenever a conversion is attempted. */
|
|
if (verbose && p_verbose > 0) {
|
|
verbose_enter();
|
|
EMSG2(_(e_loadlib),
|
|
hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL);
|
|
verbose_leave();
|
|
}
|
|
iconv_end();
|
|
return false;
|
|
}
|
|
|
|
iconv = (void *)GetProcAddress(hIconvDLL, "libiconv");
|
|
iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open");
|
|
iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close");
|
|
iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl");
|
|
iconv_errno = get_iconv_import_func(hIconvDLL, "_errno");
|
|
if (iconv_errno == NULL)
|
|
iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno");
|
|
if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
|
|
|| iconvctl == NULL || iconv_errno == NULL) {
|
|
iconv_end();
|
|
if (verbose && p_verbose > 0) {
|
|
verbose_enter();
|
|
EMSG2(_(e_loadfunc), "for libiconv");
|
|
verbose_leave();
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void iconv_end(void)
|
|
{
|
|
if (hIconvDLL != 0)
|
|
FreeLibrary(hIconvDLL);
|
|
if (hMsvcrtDLL != 0)
|
|
FreeLibrary(hMsvcrtDLL);
|
|
hIconvDLL = 0;
|
|
hMsvcrtDLL = 0;
|
|
}
|
|
|
|
# endif /* DYNAMIC_ICONV */
|
|
# endif /* USE_ICONV */
|
|
|
|
|
|
|
|
|
|
/*
|
|
* Setup "vcp" for conversion from "from" to "to".
|
|
* The names must have been made canonical with enc_canonize().
|
|
* vcp->vc_type must have been initialized to CONV_NONE.
|
|
* Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8
|
|
* instead).
|
|
* Afterwards invoke with "from" and "to" equal to NULL to cleanup.
|
|
* Return FAIL when conversion is not supported, OK otherwise.
|
|
*/
|
|
int convert_setup(vimconv_T *vcp, char_u *from, char_u *to)
|
|
{
|
|
return convert_setup_ext(vcp, from, true, to, true);
|
|
}
|
|
|
|
/*
|
|
* As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all
|
|
* "from" unicode charsets be considered utf-8. Same for "to".
|
|
*/
|
|
int convert_setup_ext(vimconv_T *vcp, char_u *from, bool from_unicode_is_utf8,
|
|
char_u *to, bool to_unicode_is_utf8)
|
|
{
|
|
int from_prop;
|
|
int to_prop;
|
|
int from_is_utf8;
|
|
int to_is_utf8;
|
|
|
|
/* Reset to no conversion. */
|
|
# ifdef USE_ICONV
|
|
if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1)
|
|
iconv_close(vcp->vc_fd);
|
|
# endif
|
|
vcp->vc_type = CONV_NONE;
|
|
vcp->vc_factor = 1;
|
|
vcp->vc_fail = false;
|
|
|
|
/* No conversion when one of the names is empty or they are equal. */
|
|
if (from == NULL || *from == NUL || to == NULL || *to == NUL
|
|
|| STRCMP(from, to) == 0)
|
|
return OK;
|
|
|
|
from_prop = enc_canon_props(from);
|
|
to_prop = enc_canon_props(to);
|
|
if (from_unicode_is_utf8)
|
|
from_is_utf8 = from_prop & ENC_UNICODE;
|
|
else
|
|
from_is_utf8 = from_prop == ENC_UNICODE;
|
|
if (to_unicode_is_utf8)
|
|
to_is_utf8 = to_prop & ENC_UNICODE;
|
|
else
|
|
to_is_utf8 = to_prop == ENC_UNICODE;
|
|
|
|
if ((from_prop & ENC_LATIN1) && to_is_utf8) {
|
|
/* Internal latin1 -> utf-8 conversion. */
|
|
vcp->vc_type = CONV_TO_UTF8;
|
|
vcp->vc_factor = 2; /* up to twice as long */
|
|
} else if ((from_prop & ENC_LATIN9) && to_is_utf8) {
|
|
/* Internal latin9 -> utf-8 conversion. */
|
|
vcp->vc_type = CONV_9_TO_UTF8;
|
|
vcp->vc_factor = 3; /* up to three as long (euro sign) */
|
|
} else if (from_is_utf8 && (to_prop & ENC_LATIN1)) {
|
|
/* Internal utf-8 -> latin1 conversion. */
|
|
vcp->vc_type = CONV_TO_LATIN1;
|
|
} else if (from_is_utf8 && (to_prop & ENC_LATIN9)) {
|
|
/* Internal utf-8 -> latin9 conversion. */
|
|
vcp->vc_type = CONV_TO_LATIN9;
|
|
}
|
|
# ifdef USE_ICONV
|
|
else {
|
|
/* Use iconv() for conversion. */
|
|
vcp->vc_fd = (iconv_t)my_iconv_open(
|
|
to_is_utf8 ? (char_u *)"utf-8" : to,
|
|
from_is_utf8 ? (char_u *)"utf-8" : from);
|
|
if (vcp->vc_fd != (iconv_t)-1) {
|
|
vcp->vc_type = CONV_ICONV;
|
|
vcp->vc_factor = 4; /* could be longer too... */
|
|
}
|
|
}
|
|
# endif
|
|
if (vcp->vc_type == CONV_NONE)
|
|
return FAIL;
|
|
|
|
return OK;
|
|
}
|
|
|
|
/*
|
|
* Convert text "ptr[*lenp]" according to "vcp".
|
|
* Returns the result in allocated memory and sets "*lenp".
|
|
* When "lenp" is NULL, use NUL terminated strings.
|
|
* Illegal chars are often changed to "?", unless vcp->vc_fail is set.
|
|
* When something goes wrong, NULL is returned and "*lenp" is unchanged.
|
|
*/
|
|
char_u * string_convert(vimconv_T *vcp, char_u *ptr, size_t *lenp)
|
|
{
|
|
return string_convert_ext(vcp, ptr, lenp, NULL);
|
|
}
|
|
|
|
/*
|
|
* Like string_convert(), but when "unconvlenp" is not NULL and there are is
|
|
* an incomplete sequence at the end it is not converted and "*unconvlenp" is
|
|
* set to the number of remaining bytes.
|
|
*/
|
|
char_u * string_convert_ext(vimconv_T *vcp, char_u *ptr,
|
|
size_t *lenp, size_t *unconvlenp)
|
|
{
|
|
char_u *retval = NULL;
|
|
char_u *d;
|
|
int l;
|
|
int c;
|
|
|
|
size_t len;
|
|
if (lenp == NULL)
|
|
len = STRLEN(ptr);
|
|
else
|
|
len = *lenp;
|
|
if (len == 0)
|
|
return vim_strsave((char_u *)"");
|
|
|
|
switch (vcp->vc_type) {
|
|
case CONV_TO_UTF8: /* latin1 to utf-8 conversion */
|
|
retval = xmalloc(len * 2 + 1);
|
|
d = retval;
|
|
for (size_t i = 0; i < len; ++i) {
|
|
c = ptr[i];
|
|
if (c < 0x80)
|
|
*d++ = c;
|
|
else {
|
|
*d++ = 0xc0 + ((unsigned)c >> 6);
|
|
*d++ = 0x80 + (c & 0x3f);
|
|
}
|
|
}
|
|
*d = NUL;
|
|
if (lenp != NULL)
|
|
*lenp = (size_t)(d - retval);
|
|
break;
|
|
|
|
case CONV_9_TO_UTF8: /* latin9 to utf-8 conversion */
|
|
retval = xmalloc(len * 3 + 1);
|
|
d = retval;
|
|
for (size_t i = 0; i < len; ++i) {
|
|
c = ptr[i];
|
|
switch (c) {
|
|
case 0xa4: c = 0x20ac; break; /* euro */
|
|
case 0xa6: c = 0x0160; break; /* S hat */
|
|
case 0xa8: c = 0x0161; break; /* S -hat */
|
|
case 0xb4: c = 0x017d; break; /* Z hat */
|
|
case 0xb8: c = 0x017e; break; /* Z -hat */
|
|
case 0xbc: c = 0x0152; break; /* OE */
|
|
case 0xbd: c = 0x0153; break; /* oe */
|
|
case 0xbe: c = 0x0178; break; /* Y */
|
|
}
|
|
d += utf_char2bytes(c, d);
|
|
}
|
|
*d = NUL;
|
|
if (lenp != NULL)
|
|
*lenp = (size_t)(d - retval);
|
|
break;
|
|
|
|
case CONV_TO_LATIN1: /* utf-8 to latin1 conversion */
|
|
case CONV_TO_LATIN9: /* utf-8 to latin9 conversion */
|
|
retval = xmalloc(len + 1);
|
|
d = retval;
|
|
for (size_t i = 0; i < len; ++i) {
|
|
l = utf_ptr2len_len(ptr + i, len - i);
|
|
if (l == 0)
|
|
*d++ = NUL;
|
|
else if (l == 1) {
|
|
uint8_t l_w = utf8len_tab_zero[ptr[i]];
|
|
|
|
if (l_w == 0) {
|
|
/* Illegal utf-8 byte cannot be converted */
|
|
xfree(retval);
|
|
return NULL;
|
|
}
|
|
if (unconvlenp != NULL && l_w > len - i) {
|
|
/* Incomplete sequence at the end. */
|
|
*unconvlenp = len - i;
|
|
break;
|
|
}
|
|
*d++ = ptr[i];
|
|
} else {
|
|
c = utf_ptr2char(ptr + i);
|
|
if (vcp->vc_type == CONV_TO_LATIN9)
|
|
switch (c) {
|
|
case 0x20ac: c = 0xa4; break; /* euro */
|
|
case 0x0160: c = 0xa6; break; /* S hat */
|
|
case 0x0161: c = 0xa8; break; /* S -hat */
|
|
case 0x017d: c = 0xb4; break; /* Z hat */
|
|
case 0x017e: c = 0xb8; break; /* Z -hat */
|
|
case 0x0152: c = 0xbc; break; /* OE */
|
|
case 0x0153: c = 0xbd; break; /* oe */
|
|
case 0x0178: c = 0xbe; break; /* Y */
|
|
case 0xa4:
|
|
case 0xa6:
|
|
case 0xa8:
|
|
case 0xb4:
|
|
case 0xb8:
|
|
case 0xbc:
|
|
case 0xbd:
|
|
case 0xbe: c = 0x100; break; /* not in latin9 */
|
|
}
|
|
if (!utf_iscomposing(c)) { /* skip composing chars */
|
|
if (c < 0x100)
|
|
*d++ = c;
|
|
else if (vcp->vc_fail) {
|
|
xfree(retval);
|
|
return NULL;
|
|
} else {
|
|
*d++ = 0xbf;
|
|
if (utf_char2cells(c) > 1)
|
|
*d++ = '?';
|
|
}
|
|
}
|
|
i += l - 1;
|
|
}
|
|
}
|
|
*d = NUL;
|
|
if (lenp != NULL)
|
|
*lenp = (size_t)(d - retval);
|
|
break;
|
|
|
|
# ifdef USE_ICONV
|
|
case CONV_ICONV: /* conversion with vcp->vc_fd */
|
|
retval = iconv_string(vcp, ptr, len, unconvlenp, lenp);
|
|
break;
|
|
# endif
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
// Check bounds for column number
|
|
static int check_col(int col)
|
|
{
|
|
if (col < 0)
|
|
return 0;
|
|
if (col >= screen_Columns)
|
|
return screen_Columns - 1;
|
|
return col;
|
|
}
|
|
|
|
// Check bounds for row number
|
|
static int check_row(int row)
|
|
{
|
|
if (row < 0)
|
|
return 0;
|
|
if (row >= screen_Rows)
|
|
return screen_Rows - 1;
|
|
return row;
|
|
}
|