1 files changed, 103 insertions, 0 deletions
diff --git a/contrib/groff/xditview/lex.c b/contrib/groff/xditview/lex.c
new file mode 100644
index 0000000..32831bd
--- /dev/null
+++ b/contrib/groff/xditview/lex.c
@@ -0,0 +1,103 @@
+#include <X11/Xos.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <stdio.h>
+#include "DviP.h"
+
+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);
+		if (*cp != EOF)
+			putc (*cp, dw->dvi.tmpFile);
+	}
+	return *cp;
+}
+
+char *
+GetLine(dw, Buffer, Length)
+	DviWidget	dw;
+	char	*Buffer;
+	int	Length;
+{
+	int 	i = 0, c;
+	
+	Length--;		     /* Save room for final '\0' */
+	
+	while (DviGetC (dw, &c) != EOF) {
+		if (Buffer && i < Length)
+			Buffer[i++] = c;
+		if (c == '\n') {
+			DviUngetC(dw, c);
+			break;
+		}
+	}
+	if (Buffer)
+		Buffer[i] = '\0';
+	return Buffer;
+} 
+
+char *
+GetWord(dw, Buffer, Length)
+	DviWidget	dw;
+	char	*Buffer;
+	int	Length;
+{
+	int 	i = 0, c;
+	
+	Length--;			    /* Save room for final '\0' */
+	while (DviGetC(dw, &c) == ' ' || c == '\n')
+		;
+	while (c != EOF) {
+		if (Buffer && i < Length)
+			Buffer[i++] = c;
+		if (DviGetC(dw, &c) == ' ' || c == '\n') {
+			DviUngetC(dw, c);
+			break;
+		}
+	}
+	if (Buffer)
+		Buffer[i] = '\0';
+	return Buffer;
+} 
+
+GetNumber(dw)
+	DviWidget	dw;
+{
+	int	i = 0,  c;
+	int	negative = 0;
+
+	while (DviGetC(dw, &c) == ' ' || c == '\n')
+		;
+	if (c == '-') {
+		negative = 1;
+		DviGetC(dw, &c);
+	}
+
+	for (; c >= '0' && c <= '9'; DviGetC(dw, &c)) {
+		if (negative)
+			i = i*10 - (c - '0');
+		else
+			i = i*10 + c - '0';
+	}
+	if (c != EOF)
+		DviUngetC(dw, c);
+	return i;
+}
+	
+/*
+Local Variables:
+c-indent-level: 8
+c-continued-statement-offset: 8
+c-brace-offset: -8
+c-argdecl-indent: 8
+c-label-offset: -8
+c-tab-always-indent: nil
+End:
+*/