X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/charset/blobdiff_plain/a3a721486088f954229921ea2cde4ba6ad9db089..01081d4e1448c952c0967e71448b504e26360923:/cstable.c

diff --git a/cstable.c b/cstable.c
new file mode 100644
index 0000000..1336aac
--- /dev/null
+++ b/cstable.c
@@ -0,0 +1,78 @@
+/*
+ * cstable.c - libcharset supporting utility which draws up a map
+ * of the whole Unicode BMP and annotates it with details of which
+ * other character sets each character appears in.
+ * 
+ * Note this is not a libcharset _client_; it is part of the
+ * libcharset _package_, using libcharset internals.
+ */
+
+#include "charset.h"
+#include "internal.h"
+#include "sbcsdat.h"
+
+#define ENUM_CHARSET(x) extern charset_spec const charset_##x;
+#include "enum.c"
+#undef ENUM_CHARSET
+static charset_spec const *const cs_table[] = {
+#define ENUM_CHARSET(x) &charset_##x,
+#include "enum.c"
+#undef ENUM_CHARSET
+};
+
+int main(void)
+{
+    long int c;
+
+    for (c = 0; c < 0x10000; c++) {
+	int i, row, col;
+	char const *sep = "";
+
+	printf("U+%04x:", c);
+
+	/*
+	 * Look up in SBCSes.
+	 */
+	for (i = 0; i < lenof(cs_table); i++)
+	    if (cs_table[i]->read == read_sbcs &&
+		sbcs_from_unicode(cs_table[i]->data, c) != ERROR) {
+		printf("%s %s", sep,
+		       charset_to_localenc(cs_table[i]->charset));
+		sep = ";";
+	    }
+
+	/*
+	 * Look up individually in MBCS base charsets.
+	 */
+	if (unicode_to_big5(c, &row, &col)) {
+	    printf("%s Big5", sep);
+	    sep = ";";
+	}
+	if (unicode_to_gb2312(c, &row, &col)) {
+	    printf("%s GB2312", sep);
+	    sep = ";";
+	}
+
+	if (unicode_to_jisx0208(c, &row, &col)) {
+	    printf("%s JIS X 0208", sep);
+	    sep = ";";
+	}
+
+	if (unicode_to_ksx1001(c, &row, &col)) {
+	    printf("%s KS X 1001", sep);
+	    sep = ";";
+	}
+
+	if (unicode_to_cp949(c, &row, &col)) {
+	    printf("%s CP949", sep);
+	    sep = ";";
+	}
+
+	if (!*sep)
+	    printf(" unicode-only");
+
+	printf("\n");
+    }
+
+    return 0;
+}