--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dep/utf8proc/test/tests.c	Thu Jun 20 05:56:06 2024 -0400
@@ -0,0 +1,59 @@
+/* Common functions for our test programs. */
+
+#include "tests.h"
+
+size_t lineno = 0;
+
+void check(int cond, const char *format, ...)
+{
+     if (!cond) {
+          va_list args;
+          fprintf(stderr, "line %zd: ", lineno);
+          va_start(args, format);
+          vfprintf(stderr, format, args);
+          va_end(args);
+          fprintf(stderr, "\n");
+          exit(1);
+     }
+}
+
+size_t skipspaces(const unsigned char *buf, size_t i)
+{
+    while (isspace(buf[i])) ++i;
+    return i;
+}
+
+/* if buf points to a sequence of codepoints encoded as hexadecimal strings,
+   separated by whitespace, and terminated by any character not in
+   [0-9a-fA-F] or whitespace, then stores the corresponding utf8 string
+   in dest, returning the number of bytes read from buf */
+size_t encode(unsigned char *dest, const unsigned char *buf)
+{
+     size_t i = 0, j;
+     utf8proc_ssize_t d = 0;
+     for (;;) {
+          int c;
+          i = skipspaces(buf, i);
+          for (j=i; buf[j] && strchr("0123456789abcdef", tolower(buf[j])); ++j)
+               ; /* find end of hex input */
+          if (j == i) { /* no codepoint found */
+               dest[d] = 0; /* NUL-terminate destination string */
+               return i + 1;
+          }
+          check(sscanf((char *) (buf + i), "%x", (unsigned int *)&c) == 1, "invalid hex input %s", buf+i);
+          i = j; /* skip to char after hex input */
+          d += utf8proc_encode_char(c, (utf8proc_uint8_t *) (dest + d));
+     }
+}
+
+/* simplistic, portable replacement for getline, sufficient for our tests */
+size_t simple_getline(unsigned char buf[8192], FILE *f) {
+    size_t i = 0;
+    while (i < 8191) {
+        int c = getc(f);
+        if (c == EOF || c == '\n') break;
+        buf[i++] = (unsigned char) c;
+    }
+    buf[i] = 0;
+    return i;
+}