LCOV - code coverage report
Current view: top level - klever-core-work-dir/b62ffab/linux-drivers-clk2/lkbce/fs/nls - nls_utf8.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 26 26 100.0 %
Date: 2017-01-25 Functions: 4 4 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Module for handling utf8 just like any other charset.
       3             :  * By Urban Widmark 2000
       4             :  */
       5             : 
       6             : #include <linux/module.h>
       7             : #include <linux/kernel.h>
       8             : #include <linux/string.h>
       9             : #include <linux/nls.h>
      10             : #include <linux/errno.h>
      11             : 
      12           1 : static unsigned char identity[256];
      13             : 
      14             : static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
      15             : {
      16           1 :         int n;
      17             : 
      18           2 :         if (boundlen <= 0)
      19           1 :                 return -ENAMETOOLONG;
      20             : 
      21           1 :         n = utf32_to_utf8(uni, out, boundlen);
      22           2 :         if (n < 0) {
      23           1 :                 *out = '?';
      24           1 :                 return -EINVAL;
      25             :         }
      26           1 :         return n;
      27             : }
      28             : 
      29             : static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
      30             : {
      31           1 :         int n;
      32           1 :         unicode_t u;
      33             : 
      34           1 :         n = utf8_to_utf32(rawstring, boundlen, &u);
      35           4 :         if (n < 0 || u > MAX_WCHAR_T) {
      36           1 :                 *uni = 0x003f;  /* ? */
      37           1 :                 return -EINVAL;
      38             :         }
      39           1 :         *uni = (wchar_t) u;
      40           1 :         return n;
      41             : }
      42             : 
      43           1 : static struct nls_table table = {
      44             :         .charset        = "utf8",
      45             :         .uni2char       = uni2char,
      46             :         .char2uni       = char2uni,
      47             :         .charset2lower  = identity,     /* no conversion */
      48             :         .charset2upper  = identity,
      49             :         .owner          = THIS_MODULE,
      50             : };
      51             : 
      52             : static int __init init_nls_utf8(void)
      53             : {
      54           1 :         int i;
      55           6 :         for (i=0; i<256; i++)
      56           3 :                 identity[i] = i;
      57           1 : 
      58           2 :         return register_nls(&table);
      59             : }
      60             : 
      61             : static void __exit exit_nls_utf8(void)
      62             : {
      63           2 :         unregister_nls(&table);
      64           2 : }
      65             : 
      66             : module_init(init_nls_utf8)
      67             : module_exit(exit_nls_utf8)
      68           1 : MODULE_LICENSE("Dual BSD/GPL");

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