Character-encoding tests.

1 files changed, 184 insertions, 0 deletions

diff --git a/tokens.c b/tokens.c
new file mode 100644
index 00000000..07cdb671
--- /dev/null
+++ b/tokens.c
@@ -0,0 +1,184 @@
+/* $Id$ */
+/*
+ * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "libmdocml.h"
+#include "private.h"
+
+
+static	int		 rofftok_dashes(const char *);
+static	int		 rofftok_special(const char *);
+static	int		 rofftok_predef(const char *);
+static	int		 rofftok_defined(const char *);
+
+
+static int
+rofftok_defined(const char *buf)
+{
+	if (0 == *buf)
+		return(-1);
+	if (0 == *(buf + 1))
+		return(-1);
+	if (0 != *(buf + 2))
+		return(-1);
+
+	if (0 == strcmp(buf, ">="))
+		return(ROFFTok_Ge);
+	else if (0 == strcmp(buf, "<="))
+		return(ROFFTok_Le);
+	else if (0 == strcmp(buf, "Rq"))
+		return(ROFFTok_Rquote);
+	else if (0 == strcmp(buf, "Lq"))
+		return(ROFFTok_Lquote);
+	else if (0 == strcmp(buf, "ua"))
+		return(ROFFTok_Uparrow);
+	else if (0 == strcmp(buf, "aa"))
+		return(ROFFTok_Acute);
+	else if (0 == strcmp(buf, "ga"))
+		return(ROFFTok_Grave);
+	else if (0 == strcmp(buf, "Pi"))
+		return(ROFFTok_Pi);
+	else if (0 == strcmp(buf, "Ne"))
+		return(ROFFTok_Ne);
+	else if (0 == strcmp(buf, "Le"))
+		return(ROFFTok_Le);
+	else if (0 == strcmp(buf, "Ge"))
+		return(ROFFTok_Ge);
+	else if (0 == strcmp(buf, "Lt"))
+		return(ROFFTok_Lt);
+	else if (0 == strcmp(buf, "Gt"))
+		return(ROFFTok_Gt);
+	else if (0 == strcmp(buf, "Pm"))
+		return(ROFFTok_Plusmin);
+	else if (0 == strcmp(buf, "If"))
+		return(ROFFTok_Infty);
+	else if (0 == strcmp(buf, "Na"))
+		return(ROFFTok_Nan);
+	else if (0 == strcmp(buf, "Ba"))
+		return(ROFFTok_Bar);
+
+	return(-1);
+}
+
+
+static int
+rofftok_predef(const char *buf)
+{
+	if (0 == *buf)
+		return(-1);
+
+	if ('(' == *buf)
+		return(rofftok_defined(++buf));
+
+	/* TODO */
+
+	return(-1);
+}
+
+
+static int
+rofftok_dashes(const char *buf)
+{
+
+	if (0 == *buf)
+		return(-1);
+	else if (*buf++ != 'e')
+		return(-1);
+
+	if (0 == *buf)
+		return(-1);
+	else if (0 != *(buf + 1))
+		return(-1);
+
+	switch (*buf) {
+	case ('m'):
+		return(ROFFTok_Em);
+	case ('n'):
+		return(ROFFTok_En);
+	default:
+		break;
+	}
+	return(-1);
+}
+
+
+static int
+rofftok_special(const char *buf)
+{
+
+	if (0 == *buf)
+		return(-1);
+	else if (0 != *(buf + 1))
+		return(-1);
+
+	switch (*buf) {
+	case ('a'):
+		return(ROFFTok_Sp_A);
+	case ('b'):
+		return(ROFFTok_Sp_B);
+	case ('f'):
+		return(ROFFTok_Sp_F);
+	case ('n'):
+		return(ROFFTok_Sp_N);
+	case ('r'):
+		return(ROFFTok_Sp_R);
+	case ('t'):
+		return(ROFFTok_Sp_T);
+	case ('v'):
+		return(ROFFTok_Sp_V);
+	default:
+		break;
+	}
+	return(-1);
+}
+
+
+int
+rofftok_scan(const char *buf)
+{
+
+	assert(*buf);
+	if ('\\' != *buf++)
+		return(ROFFTok_MAX);
+
+	for ( ; *buf; buf++) {
+		switch (*buf) {
+		case ('e'):
+			return(rofftok_special(++buf));
+		case ('('):
+			return(rofftok_dashes(++buf));
+		case (' '):
+			return(ROFFTok_Space);
+		case ('&'):
+			return(ROFFTok_Null);
+		case ('-'):
+			return(ROFFTok_Hyphen);
+		case ('*'):
+			return(rofftok_predef(++buf));
+		default:
+			break;
+		}
+	}
+
+	return(-1);
+}
+
+