From: Maxim Mamontov <faust.madf@gmail.com>
Date: Sat, 13 Sep 2014 21:57:22 +0000 (+0300)
Subject: Added special function to read/write all data (for TCP).
X-Git-Url: https://git.stg.codes/stg.git/commitdiff_plain/237f834a52db0d12c85f70c5e65f48ec1923d00a?hp=ed18fae7caed32c29b04753096d923bbf6ebb6ca

Added special function to read/write all data (for TCP).
---

diff --git a/stglibs/common.lib/common.cpp b/stglibs/common.lib/common.cpp
index fb6cdbb1..425c3ee6 100644
--- a/stglibs/common.lib/common.cpp
+++ b/stglibs/common.lib/common.cpp
@@ -1067,3 +1067,35 @@ if (res == 0) // Timeout
 
 return true;
 }
+
+bool ReadAll(int sd, void * dest, size_t size)
+{
+size_t done = 0;
+char * ptr = static_cast<char *>(dest);
+while (done < size)
+    {
+    if (!WaitPackets(sd))
+        return false;
+    ssize_t res = read(sd, ptr + done, size - done);
+    if (res < 0)
+        return false;
+    if (res == 0)
+        return true;
+    done += res;
+    }
+return true;
+}
+
+bool WriteAll(int sd, const void * source, size_t size)
+{
+size_t done = 0;
+const char * ptr = static_cast<const char *>(source);
+while (done < size)
+    {
+    ssize_t res = write(sd, ptr + done, size - done);
+    if (res <= 0)
+        return false;
+    done += res;
+    }
+return true;
+}
diff --git a/stglibs/common.lib/include/stg/common.h b/stglibs/common.lib/include/stg/common.h
index 6af1309f..41cdfa56 100644
--- a/stglibs/common.lib/include/stg/common.h
+++ b/stglibs/common.lib/include/stg/common.h
@@ -154,6 +154,9 @@ int ParseYesNo(const std::string & str, bool * val);
 
 bool WaitPackets(int sd);
 
+bool ReadAll(int sd, void * dest, size_t size);
+bool WriteAll(int sd, const void * source, size_t size);
+
 //-----------------------------------------------------------------------------
 int str2x(const std::string & str, int32_t & x);
 int str2x(const std::string & str, uint32_t & x);