Source files to Source directory

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@1513 212acab6-be3b-0410-9dea-997c60f758d6

Contrib/System/Source/Buffers.c

@@ -0,0 +1,106 @@
+#include "stdafx.h"
+#include "Plugin.h"
+#include "System.h"
+#include "Buffers.h"
+
+typedef struct tagTempStack TempStack;
+typedef struct tagTempStack
+{
+    TempStack *Next;
+    char Data[0];
+} TempStack;
+TempStack *tempstack = NULL;
+
+PLUGINFUNCTIONSHORT(Alloc)
+{
+	int size;
+	if ((size = popint()) == 0)
+	{
+		pushint(0);
+		return;
+	}
+	pushint((int) GlobalAlloc(GPTR, size));
+}
+PLUGINFUNCTIONEND
+
+PLUGINFUNCTIONSHORT(Copy)
+{
+    int size = 0;
+    HANDLE source, dest;
+	char *str;
+    // Get the string
+	if ((str = popstring()) == NULL) return;
+
+    // Check for size option
+    if (str[0] == '/')
+    {
+        size = (int) myatoi(str+1);
+        dest = (HANDLE) popint();
+    }
+    else dest = (HANDLE) myatoi(str+1);
+    source = (HANDLE) popint();
+
+    // Ok, check the size
+    if (size == 0) size = (int) GlobalSize(source);
+    // and the destinantion
+    if ((int) dest == 0) dest = GlobalAlloc((GPTR), size);
+
+    // COPY!
+    copymem(dest, source, size);
+
+    GlobalFree(str);
+}
+PLUGINFUNCTIONEND
+
+PLUGINFUNCTIONSHORT(Free)
+{
+    GlobalFree((HANDLE) popint());
+}
+PLUGINFUNCTIONEND
+
+PLUGINFUNCTION(Store)
+{
+    TempStack *tmp;
+    int size = ((INST_R9+1)*g_stringsize);    
+
+    char *command, *cmd = command = popstring();
+    while (*cmd != 0)
+    {
+        switch (*(cmd++))
+        {
+        case 's':
+        case 'S':
+            // Store the whole variables range
+            tmp = (TempStack*) GlobalAlloc(GPTR, sizeof(TempStack)+size);
+            tmp->Next = tempstack;
+            tempstack = tmp;
+
+            // Fill with data
+            copymem(tempstack->Data, g_variables, size);
+            break;
+        case 'l':
+        case 'L':
+            // Fill with data
+            copymem(g_variables, tempstack->Data, size);
+
+            // Restore stack
+            tmp = tempstack->Next;
+            GlobalFree((HANDLE) tempstack);
+            tempstack = tmp;
+            break;
+        case 'P':
+            *cmd += 10;
+        case 'p':
+            GlobalFree((HANDLE) pushstring(getuservariable(*(cmd++)-'0')));
+            break;
+        case 'R':
+            *cmd += 10;
+        case 'r':
+            GlobalFree((HANDLE) setuservariable(*(cmd++)-'0', popstring()));
+            break;
+        }
+    }
+
+    GlobalFree((HANDLE) command);
+}
+PLUGINFUNCTIONEND