utf8.[ch] et al: use char32_t and char16_t instead of int, int32_t, int16_t

rework C11 utf8.[ch] to use char32_t instead of uint32_t when referring
to unicode chars, to make things more expressive.

[
 @zonque:
  * rebased to current master
  * use AC_CHECK_DECLS to detect availibility of char{16,32}_t
  * make utf8_encoded_to_unichar() return int
]

1 files changed, 4 insertions, 4 deletions

diff --git a/src/basic/escape.c b/src/basic/escape.c
index 5661f36813..f276c36c56 100644
--- a/src/basic/escape.c
+++ b/src/basic/escape.c
@@ -119,7 +119,7 @@ char *cescape(const char *s) {
         return cescape_length(s, strlen(s));
 }
 
-int cunescape_one(const char *p, size_t length, uint32_t *ret, bool *eight_bit) {
+int cunescape_one(const char *p, size_t length, char32_t *ret, bool *eight_bit) {
         int r = 1;
 
         assert(p);
@@ -230,7 +230,7 @@ int cunescape_one(const char *p, size_t length, uint32_t *ret, bool *eight_bit)
 
                 int a[8];
                 unsigned i;
-                uint32_t c;
+                char32_t c;
 
                 if (length != (size_t) -1 && length < 9)
                         return -EINVAL;
@@ -267,7 +267,7 @@ int cunescape_one(const char *p, size_t length, uint32_t *ret, bool *eight_bit)
         case '7': {
                 /* octal encoding */
                 int a, b, c;
-                uint32_t m;
+                char32_t m;
 
                 if (length != (size_t) -1 && length < 3)
                         return -EINVAL;
@@ -327,8 +327,8 @@ int cunescape_length_with_prefix(const char *s, size_t length, const char *prefi
 
         for (f = s, t = r + pl; f < s + length; f++) {
                 size_t remaining;
-                uint32_t u;
                 bool eight_bit = false;
+                char32_t u;
                 int k;
 
                 remaining = s + length - f;