From 3cbf2fe6e6f9afdf580b1cf6522a950ef898e459 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Sat, 27 Jul 2019 15:39:35 -0400
Subject: initial commit

---
 .gitignore |  2 ++
 Makefile   |  6 ++++++
 pp.c       | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 66 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 pp.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c0d72fa
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+pp
+*.o
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2c04586
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,6 @@
+.POSIX:
+
+pp: pp.c
+
+clean:
+	rm pp *.o
diff --git a/pp.c b/pp.c
new file mode 100644
index 0000000..4e29183
--- /dev/null
+++ b/pp.c
@@ -0,0 +1,58 @@
+#define _XOPEN_SOURCE 700
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int main(int argc, char *argv[])
+{
+	if (argc != 3) {
+		fprintf(stderr, "Usage: %s source destinations\n", argv[0]);
+		return 1;
+	}
+
+	int source = open(argv[1], O_RDONLY);
+	if (source == -1) {
+		fprintf(stderr, "%s:%s\n", argv[1], strerror(errno));
+		return 1;
+	}
+
+	int dest = open(argv[2], O_WRONLY | O_CREAT, 0644);
+	if (dest == -1) {
+		fprintf(stderr, "%s:%s\n", argv[2], strerror(errno));
+		return 1;
+	}
+
+	struct stat st;
+	if (fstat(source, &st) == -1) {
+		perror("stat");
+		return 1;
+	}
+
+	setvbuf(stdout, NULL, _IONBF, 0);
+	unsigned long long i = 0;
+	do {
+		char buf[BUFSIZ];
+
+		ssize_t n = read(source, buf, sizeof(buf));
+		if (n < 0) {
+			perror("read");
+			return 1;
+		}
+
+		if (write(dest, buf, n) < n) {
+			perror("write");
+			return 1;
+		}
+
+		
+		i += n;
+		printf("\r%llu/%llu bytes (%llu%%)", i, (unsigned long long)st.st_size, i * 100 / (unsigned long long)st.st_size);
+	} while (i < (unsigned long long)st.st_size);
+
+	printf("\n");
+	return 0;
+}
-- 
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