1 files changed, 0 insertions, 153 deletions
diff --git a/kernel/vsprintf.c b/kernel/vsprintf.c
deleted file mode 100644
index a566b83..0000000
--- a/kernel/vsprintf.c
+++ /dev/null
@@ -1,153 +0,0 @@
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdint.h>
-
-enum TYPE {
-  TYPE_INT      = 1,
-  TYPE_UINT     = 2,
-  TYPE_HEX      = 3,
-  TYPE_STRING   = 4,
-  TYPE_PERCENT  = 5
-};
-
-enum FLAGS {
-  FL_ZERO     = 1, /* zero padded */
-  FL_ALT      = 2, /* alternate form (effect is type dependent) */
-  FL_UPPER    = 4  /* uppercase */
-};
-
-static void hex(char **str, char flags, int fwidth, int size, int x) {
-  bool seen;
-  int i, y, len;
-  char c;
-  char *prefl = "0x";
-  char *prefu = "0X";
-
-  /* print the prefix, if the alt flag is set */
-  if(flags & FL_ALT) {
-    if(flags & FL_UPPER) {
-      while(*prefu)
-        *(*str)++ = *prefu++;
-    } else {
-      while(*prefl)
-        *(*str)++ = *prefl++;
-    }
-  }
-
-  /* calculate the number of digits */
-  len = 0;
-  y = x;
-  seen = false;
-  for(i = 0; i < sizeof(y) << 1; i++) {
-    c = ((unsigned int) y >> 28);
-    if(c)
-      seen = true;
-    if(c || seen)
-      len++;
-    y = y << 4;
-  }
-
-  /* print the padding characters (if any) */
-  c = ' ';
-  if(flags & FL_ZERO)
-    c = '0';
-  for(i = 0; i < fwidth - len; i++)
-    *(*str)++ = c;
-
-  /* actually print the digits */
-  seen = false;
-  for(i = 0; i < sizeof(x) << 1; i++) {
-    c = ((unsigned int) x >> 28) + '0';
-    if(c > '9') {
-      c += 0x27;
-      if(flags & FL_UPPER)
-        c -= 0x20;
-    }
-
-    if(c != '0')
-      seen = true;
-    if(c != '0' || seen)
-      *(*str)++ = c;
-
-    x = x << 4;
-  }
-}
-
-int vsprintf(char *str, char *fmt, va_list ap) {
-  int x, fwidth;
-  char flags;
-  char *s;
-  char *start = str;
-  uint8_t type;
-
-  while(*fmt) {
-    if(*fmt != '%') {
-      *str++ = *fmt++;
-      continue;
-    }
-
-    type = 0;
-    flags = 0;
-    fwidth = 0;
-
-    fmt++;
-    while(1) {
-      switch(*fmt) {
-        case '#':
-          flags |= FL_ALT;
-          break;
-        case '%':
-          type = TYPE_PERCENT;
-          goto done;
-        case 's':
-          type = TYPE_STRING;
-          goto done;
-        case 'x':
-          type = TYPE_HEX;
-          goto done;
-        case 'X':
-          type = TYPE_HEX;
-          flags |= FL_UPPER;
-          goto done;
-        default:
-          /* the first zero enables zero-padding */
-          if(*fmt == '0' && !fwidth) {
-            flags |= FL_ZERO;
-            goto next;
-          }
-
-          /* subsequent numbers indicate field width */
-          if(*fmt >= '0' && *fmt <= '9') {
-            fwidth = (fwidth * 10) + (*fmt - '0');
-            goto next;
-          }
-
-          goto done;
-      }
-next:
-      fmt++;
-    }
-
-done:
-    fmt++;
-
-    switch(type) {
-      case TYPE_STRING:
-        s = va_arg(ap, char*);
-        while(*s)
-          *str++ = *s++;
-        break;
-      case TYPE_HEX:
-        x = va_arg(ap, int);
-        hex(&str, flags, fwidth, 4, x);
-        break;
-      case TYPE_PERCENT:
-        *str++ = '%';
-        break;
-    }
-  }
-
-  *str = 0;
-
-  return (str - start);
-}