Added archive extracting

1 files changed, 60 insertions, 0 deletions

diff --git a/src/record.c b/src/record.c
new file mode 100644
index 0000000..be78978
--- /dev/null
+++ b/src/record.c
@@ -0,0 +1,60 @@
+#include "tar.h"
+
+int	record_write(int fd, char *s, size_t size)
+{
+	char buf[RECORD_SIZE];
+
+	while (size > RECORD_SIZE)
+	{
+		memcpy(buf, s, RECORD_SIZE);
+		s += RECORD_SIZE;
+		size -= RECORD_SIZE;
+		if (write(fd, buf, RECORD_SIZE) == -1)
+		{
+			perror(NULL);
+			return -1;
+		}
+	}
+	bzero(buf, RECORD_SIZE);
+	memcpy(buf, s, size);
+	if (write(fd, buf, RECORD_SIZE) == -1)
+	{
+		perror(NULL);
+		return -1;
+	}
+	return (0);
+}
+
+int	record_write_blank(int fd, size_t count)
+{
+	char buf[RECORD_SIZE] = {0};
+	while (count-- > 0)
+	{
+		if (write(fd, buf, RECORD_SIZE) == -1)
+		{
+			perror(NULL);
+			return -1;
+		}
+	}
+	return 0;
+}
+
+int	record_read(int fd, char record[RECORD_SIZE])
+{
+	int ret = read(fd, record, RECORD_SIZE);
+	if (ret == -1)
+	{
+		perror(NULL);
+		return -1;
+	}
+	if (ret != RECORD_SIZE)
+		return -1;
+	return 0;
+}
+
+static char		g_record_blank[RECORD_SIZE] = {0};
+
+bool	record_is_blank(char record[RECORD_SIZE])
+{
+	return memcmp(record, g_record_blank, RECORD_SIZE) == 0;
+}