added normalization and encoding test for #13

.gitignore

@@ -13,5 +13,4 @@
 bench/bench
 bench/icu
 bench/unistring
-
+normtest
-

Makefile

@@ -45,7 +45,6 @@ CompositionExclusions.txt:
 CaseFolding.txt:
 	$(CURL) -O http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
 
-
 utf8proc.o: mojibake.h utf8proc.c utf8proc_data.c
 	$(cc) -c -o utf8proc.o utf8proc.c
 
@@ -59,3 +58,15 @@ libmojibake.so: utf8proc.o
 
 libmojibake.dylib: utf8proc.o
 	$(cc) -dynamiclib -o $@ $^ -install_name $(libdir)/$@
+
+
+# Test programs
+
+NormalizationTest.txt:
+	$(CURL) -O http://www.unicode.org/Public/UNIDATA/NormalizationTest.txt
+
+normtest: normtest.c utf8proc.o mojibake.h
+	$(cc) normtest.c utf8proc.o -o normtest
+
+check: normtest NormalizationTest.txt
+	./normtest

normtest.c

@@ -0,0 +1,107 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "mojibake.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);
+     }
+}
+
+/* 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(char *dest, const char *buf)
+{
+     size_t i = 0, j, d = 0;
+     do {
+          int c;
+          while (isspace(buf[i])) ++i; /* skip whitespace */
+          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(buf + i, "%x", &c) == 1, "invalid hex input %s", buf+i);
+          i = j; /* skip to char after hex input */
+          d += utf8proc_encode_char(c, (uint8_t *) (dest + d));
+     } while (1);
+}
+
+#define CHECK_NORM(NRM, norm, src) {                                 \
+    char *src_norm = (char*) utf8proc_ ## NRM((uint8_t*) src);      \
+    check(!strcmp(norm, src_norm),                                  \
+          "normalization failed for %s -> %s", src, norm);          \
+    free(src_norm);                                                 \
+}
+
+int main(void)
+{
+     char *buf = NULL;
+     size_t bufsize = 0;
+     FILE *f = fopen("NormalizationTest.txt", "r");
+     char source[1024], NFC[1024], NFD[1024], NFKC[1024], NFKD[1024];
+
+     check(f != NULL, "error opening NormalizationTest.txt");
+     while (getline(&buf, &bufsize, f) > 0) {
+          size_t offset;
+          lineno += 1;
+
+          if (buf[0] == '@') {
+               printf("line %zd: %s", lineno, buf + 1);
+               continue;
+          }
+          else if (lineno % 1000 == 0)
+               printf("checking line %zd...\n", lineno);
+
+          if (buf[0] == '#') continue;
+
+          offset = encode(source, buf);
+          offset += encode(NFC, buf + offset);
+          offset += encode(NFD, buf + offset);
+          offset += encode(NFKC, buf + offset);
+          offset += encode(NFKD, buf + offset);
+
+          CHECK_NORM(NFC, NFC, source);
+          CHECK_NORM(NFC, NFC, NFC);
+          CHECK_NORM(NFC, NFC, NFD);
+          CHECK_NORM(NFC, NFKC, NFKC);
+          CHECK_NORM(NFC, NFKC, NFKD);
+
+          CHECK_NORM(NFD, NFD, source);
+          CHECK_NORM(NFD, NFD, NFC);
+          CHECK_NORM(NFD, NFD, NFD);
+          CHECK_NORM(NFD, NFKD, NFKC);
+          CHECK_NORM(NFD, NFKD, NFKD);
+
+          CHECK_NORM(NFKC, NFKC, source);
+          CHECK_NORM(NFKC, NFKC, NFC);
+          CHECK_NORM(NFKC, NFKC, NFD);
+          CHECK_NORM(NFKC, NFKC, NFKC);
+          CHECK_NORM(NFKC, NFKC, NFKD);
+
+          CHECK_NORM(NFKD, NFKD, source);
+          CHECK_NORM(NFKD, NFKD, NFC);
+          CHECK_NORM(NFKD, NFKD, NFD);
+          CHECK_NORM(NFKD, NFKD, NFKC);
+          CHECK_NORM(NFKD, NFKD, NFKD);
+     }
+     fclose(f);
+     printf("Passed tests after %zd lines!\n", lineno);
+     return 0;
+}