1 files changed, 41 insertions, 0 deletions
diff --git a/src/io.cc b/src/io.cc
new file mode 100644
index 0000000..0fb31d9
--- /dev/null
+++ b/src/io.cc
@@ -0,0 +1,41 @@
+#include "common.hh"
+
+#include "io.hh"
+
+#include <errno.h>
+#include <unistd.h>
+
+namespace io {
+
+bool read_all(int fd, std::string* out) {
+  char buf[32768];
+  while (true) {
+    auto ret = read(fd, buf, sizeof(buf));
+    if (ret == 0)
+      return true;
+    if (ret < 0) {
+      if (errno == EINTR)
+        continue;
+      return false;
+    }
+    out->append(buf, ret);
+  }
+}
+
+bool write_all(int fd, std::string const& in) {
+  size_t offset = 0;
+  while (offset < in.size()) {
+    auto ret = write(fd, in.data() + offset, in.size() - offset);
+    if (ret == 0)
+      return false;
+    if (ret < 0) {
+      if (errno == EINTR)
+        continue;
+      return false;
+    }
+    offset += ret;
+  }
+  return true;
+}
+
+}  // namespace io