1 files changed, 60 insertions, 0 deletions
diff --git a/tests/failpp.c b/tests/failpp.c
new file mode 100644
index 0000000..fbf8195
--- /dev/null
+++ b/tests/failpp.c
@@ -0,0 +1,60 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <stdio.h>
+#include <ctype.h>
+
+static char errmark[] = "stop+";
+#define ERRLEN (sizeof(errmark)-1)
+
+int
+main(int argc, char **argv)
+{
+	int c;
+	int i = 0;
+	int bol = 1;
+	int ex = 0;
+	FILE *input;
+	
+	if (argc > 1) {
+		input = fopen(argv[1], "r");
+		if (!input) {
+			perror("input");
+			return 1;
+		}
+	}
+
+	while ((c = fgetc(input)) != EOF) {
+		if (bol) {
+			if (i < ERRLEN) {
+				if (c != errmark[i]) {
+					if (i)
+						fwrite(errmark, i, 1, stdout);
+					fputc(c, stdout);
+					bol = i = 0;
+				}
+			} else if (i == ERRLEN) {
+				if (!isdigit(c)) {
+					fwrite(errmark, i, 1, stdout);
+					fputc(c, stdout);
+					bol = i = 0;
+				} 
+				ex = c - '0';
+			} else if (isdigit(c)) {
+				ex = ex * 10 + c - '0';
+			} else {
+				return ex;
+			}
+			i++;
+		} else {
+			fputc(c, stdout);
+			if (c == '\n') {
+				bol = 1;
+				i = 0;
+			}
+		}
+	}
+	return 0;
+}
+	
+