kernel/generic/src/printf/vprintf.c

   1 /*
   2  * Copyright (c) 2006 Josef Cejka
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup generic
  30  * @{
  31  */
  32 /** @file
  33  */
  34
  35 #include <print.h>
  36 #include <printf/printf_core.h>
  37 #include <putchar.h>
  38 #include <synch/spinlock.h>
  39 #include <arch/asm.h>
  40 #include <typedefs.h>
  41 #include <str.h>
  42
  43 static int vprintf_str_write(const char *str, size_t size, void *data)
  44 {
  45         size_t offset = 0;
  46         size_t chars = 0;
  47
  48         while (offset < size) {
  49                 putchar(str_decode(str, &offset, size));
  50                 chars++;
  51         }
  52
  53         return chars;
  54 }
  55
  56 static int vprintf_wstr_write(const wchar_t *str, size_t size, void *data)
  57 {
  58         size_t offset = 0;
  59         size_t chars = 0;
  60
  61         while (offset < size) {
  62                 putchar(str[chars]);
  63                 chars++;
  64                 offset += sizeof(wchar_t);
  65         }
  66
  67         return chars;
  68 }
  69
  70 int puts(const char *str)
  71 {
  72         size_t offset = 0;
  73         size_t chars = 0;
  74         wchar_t uc;
  75
  76         while ((uc = str_decode(str, &offset, STR_NO_LIMIT)) != 0) {
  77                 putchar(uc);
  78                 chars++;
  79         }
  80
  81         return chars;
  82 }
  83
  84 int vprintf(const char *fmt, va_list ap)
  85 {
  86         printf_spec_t ps = {
  87                 vprintf_str_write,
  88                 vprintf_wstr_write,
  89                 NULL
  90         };
  91
  92         return printf_core(fmt, &ps, ap);
  93 }
  94
  95 /** @}
  96  */