M-text(3m17n) | The m17n Library | M-text(3m17n) |
M-text - M-text objects and API for them.
typedef struct MText MText
Type of M-texts.
enum MTextFormat { MTEXT_FORMAT_US_ASCII,
MTEXT_FORMAT_UTF_8, MTEXT_FORMAT_UTF_16LE,
MTEXT_FORMAT_UTF_16BE, MTEXT_FORMAT_UTF_32LE,
MTEXT_FORMAT_UTF_32BE, MTEXT_FORMAT_MAX }
Enumeration for specifying the format of an M-text. enum
MTextLineBreakOption { MTEXT_LBO_SP_CM = 1,
MTEXT_LBO_KOREAN_SP = 2, MTEXT_LBO_AI_AS_ID = 4,
MTEXT_LBO_MAX }
Enumeration for specifying a set of line breaking option.
int mtext_line_break (MText *mt, int pos, int
option, int *after)
Find a linebreak postion of an M-text. MText * mtext ()
Allocate a new M-text. MText * mtext_from_data (const
void *data, int nitems, enum MTextFormat format)
Allocate a new M-text with specified data. void * mtext_data
(MText *mt, enum MTextFormat *fmt, int *nunits, int *pos_idx,
int *unit_idx)
Get information about the text data in M-text. int mtext_len
(MText *mt)
Number of characters in M-text. int mtext_ref_char
(MText *mt, int pos)
Return the character at the specified position in an M-text. int
mtext_set_char (MText *mt, int pos, int c)
Store a character into an M-text. MText * mtext_cat_char
(MText *mt, int c)
Append a character to an M-text. MText * mtext_dup
(MText *mt)
Create a copy of an M-text. MText * mtext_cat
(MText *mt1, MText *mt2)
Append an M-text to another. MText * mtext_ncat
(MText *mt1, MText *mt2, int n)
Append a part of an M-text to another. MText * mtext_cpy
(MText *mt1, MText *mt2)
Copy an M-text to another. MText * mtext_ncpy
(MText *mt1, MText *mt2, int n)
Copy the first some characters in an M-text to another. MText *
mtext_duplicate (MText *mt, int from, int to)
Create a new M-text from a part of an existing M-text. MText *
mtext_copy (MText *mt1, int pos, MText *mt2, int from,
int to)
Copy characters in the specified range into an M-text. int
mtext_del (MText *mt, int from, int to)
Delete characters in the specified range destructively. int
mtext_ins (MText *mt1, int pos, MText *mt2)
Insert an M-text into another M-text. int mtext_insert
(MText *mt1, int pos, MText *mt2, int from, int to)
Insert sub-text of an M-text into another M-text. int
mtext_ins_char (MText *mt, int pos, int c, int n)
Insert a character into an M-text. int mtext_replace
(MText *mt1, int from1, int to1, MText *mt2, int from2, int
to2)
Replace sub-text of M-text with another. int mtext_character
(MText *mt, int from, int to, int c)
Search a character in an M-text. int mtext_chr (MText
*mt, int c)
Return the position of the first occurrence of a character in an M-text.
int mtext_rchr (MText *mt, int c)
Return the position of the last occurrence of a character in an M-text.
int mtext_cmp (MText *mt1, MText *mt2)
Compare two M-texts character-by-character. int mtext_ncmp
(MText *mt1, MText *mt2, int n)
Compare initial parts of two M-texts character-by-character. int
mtext_compare (MText *mt1, int from1, int to1, MText
*mt2, int from2, int to2)
Compare specified regions of two M-texts. int mtext_spn
(MText *mt, MText *accept)
Search an M-text for a set of characters. int mtext_cspn
(MText *mt, MText *reject)
Search an M-text for the complement of a set of characters. int
mtext_pbrk (MText *mt, MText *accept)
Search an M-text for any of a set of characters. MText *
mtext_tok (MText *mt, MText *delim, int *pos)
Look for a token in an M-text. int mtext_text (MText
*mt1, int pos, MText *mt2)
Locate an M-text in another. int mtext_search (MText
*mt1, int from, int to, MText *mt2)
Locate an M-text in a specific range of another. int
mtext_casecmp (MText *mt1, MText *mt2)
Compare two M-texts ignoring cases. int mtext_ncasecmp
(MText *mt1, MText *mt2, int n)
Compare initial parts of two M-texts ignoring cases. int
mtext_case_compare (MText *mt1, int from1, int to1,
MText *mt2, int from2, int to2)
Compare specified regions of two M-texts ignoring cases. int
mtext_lowercase (MText *mt)
Lowercase an M-text. int mtext_titlecase (MText *mt)
Titlecase an M-text. int mtext_uppercase (MText *mt)
Uppercase an M-text.
MSymbol Mlanguage
enum MTextFormat MTEXT_FORMAT_UTF_16
Variable of value MTEXT_FORMAT_UTF_16LE or MTEXT_FORMAT_UTF_16BE.
const int MTEXT_FORMAT_UTF_32
Variable of value MTEXT_FORMAT_UTF_32LE or MTEXT_FORMAT_UTF_32BE.
M-text objects and API for them.
In the m17n library, text is represented as an object called M-text rather than as a C-string (char * or unsigned char *). An M-text is a sequence of characters whose length is equals to or more than 0, and can be coined from various character sources, e.g. C-strings, files, character codes, etc.
M-texts are more useful than C-strings in the following points.
In addition, the library provides many functions to manipulate an M-text just the same way as a C-string.
Type of M-texts. The type MText is for an M-text object. Its internal structure is concealed from application programs.
Enumeration for specifying the format of an M-text. The enum MTextFormat is used as an argument of the mtext_from_data() function to specify the format of data from which an M-text is created.
Enumerator:
Enumeration for specifying a set of line breaking option. The enum MTextLineBreakOption is to control the line breaking algorithm of the function mtext_line_break() by specifying logical-or of the members in the arg option.
Enumerator:
Variable of value MTEXT_FORMAT_UTF_16LE or MTEXT_FORMAT_UTF_16BE. The global variable MTEXT_FORMAT_UTF_16 is initialized to MTEXT_FORMAT_UTF_16LE on a 'Little Endian' system (storing words with the least significant byte first), and to MTEXT_FORMAT_UTF_16BE on a 'Big Endian' system (storing words with the most significant byte first).
SEE ALSO
Variable of value MTEXT_FORMAT_UTF_32LE or MTEXT_FORMAT_UTF_32BE. The global variable MTEXT_FORMAT_UTF_32 is initialized to MTEXT_FORMAT_UTF_32LE on a 'Little Endian' system (storing words with the least significant byte first), and to MTEXT_FORMAT_UTF_32BE on a 'Big Endian' system (storing words with the most significant byte first).
SEE ALSO
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12 Jan 2011 | Version 1.6.2 |