1 files changed, 92 insertions, 0 deletions
diff --git a/lex.c b/lex.c
new file mode 100644
index 0000000..0d58818
--- /dev/null
+++ b/lex.c
@@ -0,0 +1,92 @@
+/* $XFree86: xc/programs/xditview/lex.c,v 1.4 2001/08/01 00:45:03 tsi Exp $ */
+
+#include <X11/Xos.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <stdio.h>
+#include <ctype.h>
+#include "DviP.h"
+
+int
+DviGetAndPut(dw, cp)
+    DviWidget	dw;
+    int		*cp;
+{
+    if (dw->dvi.ungot)
+    {
+	dw->dvi.ungot = 0;
+	*cp = getc (dw->dvi.file);
+    }
+    else
+    {
+	*cp = getc (dw->dvi.file);
+	putc (*cp, dw->dvi.tmpFile);
+    }
+    return *cp;
+}
+
+char *
+GetLine(dw, Buffer, Length)
+	DviWidget	dw;
+	char	*Buffer;
+	int	Length;
+{
+	int 	i = 0, c;
+	char	*p = Buffer;
+
+	Length--;			    /* Save room for final NULL */
+
+	while ((!p || i < Length) && DviGetC (dw, &c) != EOF && c != '\n')
+		if (p)
+			*p++ = c;
+#if 0
+	if (c == '\n' && p)		    /* Retain the newline like fgets */
+		*p++ = c;
+#endif
+	if (c == '\n')
+		DviUngetC(dw, c);
+	if (p)
+		*p = '\0';
+	return (Buffer);
+}
+
+char *
+GetWord(dw, Buffer, Length)
+	DviWidget	dw;
+	char	*Buffer;
+	int	Length;
+{
+	int 	i = 0, c;
+	char	*p = Buffer;
+
+	Length--;			    /* Save room for final NULL */
+	while (DviGetC(dw, &c) != EOF && isspace(c))
+		;
+	if (c != EOF)
+		DviUngetC(dw, c);
+	while (i < Length && DviGetC(dw, &c) != EOF && !isspace(c))
+		if (p)
+			*p++ = c;
+	if (c != EOF)
+		DviUngetC(dw, c);
+	if (p)
+		*p = '\0';
+	return (Buffer);
+}
+
+int
+GetNumber(dw)
+	DviWidget	dw;
+{
+	int	i = 0,  c;
+
+	while (DviGetC(dw, &c) != EOF && isspace(c))
+		;
+	if (c != EOF)
+		DviUngetC(dw, c);
+	while (DviGetC(dw, &c) != EOF && isdigit(c))
+		i = i*10 + c - '0';
+	if (c != EOF)
+		DviUngetC(dw, c);
+	return (i);
+}