Add TODO and format lib/converters/utf32be.h.

Author: ChenPi11

TODO

@@ -0,0 +1,2 @@
+1. Implement the //NON_IDENTICAL_DISCARD suffix from POSIX:2024.
+2. Add translit support.

lib/converters/utf32be.h

@@ -27,39 +27,44 @@
 
 #include "reiconv_defines.h"
 
-/* Specification: Unicode 3.1 Standard Annex #19 */
+// Specification: Unicode 3.1 Standard Annex #19
 
-static int
-utf32be_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
+static int utf32be_mbtowc(conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
 {
-  if (n >= 4) {
-    ucs4_t wc =   ((ucs4_t) s[0] << 24)
-                + ((ucs4_t) s[1] << 16)
-                + ((ucs4_t) s[2] << 8)
-                +  (ucs4_t) s[3];
-    if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) {
-      *pwc = wc;
-      return 4;
-    } else
-      return RET_ILSEQ;
-  }
-  return RET_TOOFEW(0);
+    if (n >= 4)
+    {
+        ucs4_t wc = ((ucs4_t)s[0] << 24) + ((ucs4_t)s[1] << 16) + ((ucs4_t)s[2] << 8) + (ucs4_t)s[3];
+        if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000))
+        {
+            *pwc = wc;
+            return 4;
+        }
+        else
+        {
+            return RET_ILSEQ;
+        }
+    }
+    return RET_TOOFEW(0);
 }
 
-static int
-utf32be_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
+static int utf32be_wctomb(conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
 {
-  if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) {
-    if (n >= 4) {
-      r[0] = 0;
-      r[1] = (unsigned char) (wc >> 16);
-      r[2] = (unsigned char) (wc >> 8);
-      r[3] = (unsigned char) wc;
-      return 4;
-    } else
-      return RET_TOOSMALL;
-  }
-  return RET_ILUNI;
+    if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000))
+    {
+        if (n >= 4)
+        {
+            r[0] = 0;
+            r[1] = (unsigned char)(wc >> 16);
+            r[2] = (unsigned char)(wc >> 8);
+            r[3] = (unsigned char)wc;
+            return 4;
+        }
+        else
+        {
+            return RET_TOOSMALL;
+        }
+    }
+    return RET_ILUNI;
 }
 
 #endif /* _UTF32BE_H_ */