nls_ascii.c File Reference

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/nls.h>
#include <linux/errno.h>

Include dependency graph for nls_ascii.c:

Go to the source code of this file.

Functions
static int	uni2char (wchar_t uni, unsigned char *out, int boundlen)
static int	char2uni (const unsigned char *rawstring, int boundlen, wchar_t *uni)
static int __init	init_nls_ascii (void)
static void __exit	exit_nls_ascii (void)

Variables
static wchar_t	charset2uni [256]
static unsigned char	page00 [256]
static unsigned char *	page_uni2charset [256]
static unsigned char	charset2lower [256]
static unsigned char	charset2upper [256]
static struct nls_table	table

Function Documentation

char2uni()

static int char2uni ( const unsigned char *  rawstring, int  boundlen, wchar_t *  uni  )

static

Definition at line 137 of file nls_ascii.c.

{
    *uni = charset2uni[*rawstring];
    if (*uni == 0x0000)
        return -EINVAL;
    return 1;
}

exit_nls_ascii()

static void __exit exit_nls_ascii ( void  )

static

Definition at line 160 of file nls_ascii.c.

{
    unregister_nls(&table);
}

init_nls_ascii()

static int __init init_nls_ascii ( void  )

static

Definition at line 155 of file nls_ascii.c.

{
    return register_nls(&table);
}

Referenced by Ext2LoadAllNls(), and Ext2UnloadAllNls().

uni2char()

static int uni2char ( wchar_t  uni, unsigned char *  out, int  boundlen  )

static

Definition at line 120 of file nls_ascii.c.

{
    unsigned char *uni2charset;
    unsigned char cl = uni & 0x00ff;
    unsigned char ch = (uni & 0xff00) >> 8;
 
    if (boundlen <= 0)
        return -ENAMETOOLONG;
 
    uni2charset = page_uni2charset[ch];
    if (uni2charset && uni2charset[cl])
        out[0] = uni2charset[cl];
    else
        return -EINVAL;
    return 1;
}

Variable Documentation

charset2lower

unsigned char charset2lower[256]

static

Initial value:

= {
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 
    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 
    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 
    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 
    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 
    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 
    0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 
    0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 
    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 
    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 
    0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 
    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 
    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 
    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 
    0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 
}

Definition at line 82 of file nls_ascii.c.

charset2uni

wchar_t charset2uni[256]

static

Definition at line 16 of file nls_ascii.c.

Referenced by char2uni().

charset2upper

unsigned char charset2upper[256]

static

Initial value:

= {
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 
    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 
    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 
    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 
    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 
    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 
    0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 
    0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 
    0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 
    0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 
    0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 
    0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 
    0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 
    0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 
    0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 
}

Definition at line 101 of file nls_ascii.c.

page00

unsigned char page00[256]

static

Initial value:

= {
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 
    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 
    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 
    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 
    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 
    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 
    0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 
    0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 
    0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 
    0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 
    0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 
    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 
    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 
    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 
    0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 
}

Definition at line 59 of file nls_ascii.c.

page_uni2charset

unsigned char* page_uni2charset[256]

static

Initial value:

= {
    page00,
}

Definition at line 78 of file nls_ascii.c.

Referenced by uni2char().

table

struct nls_table table

static

Initial value:

= {
     "ascii",
       0,
     uni2char,
     char2uni,
     charset2lower,
     charset2upper,
     THIS_MODULE,
}

Definition at line 145 of file nls_ascii.c.