System plugin

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@1130 212acab6-be3b-0410-9dea-997c60f758d6

Contrib/System/Plugin.c

@@ -0,0 +1,109 @@
+#include "stdafx.h"
+#include "Plugin.h"
+#include "System.h"
+
+HWND g_hwndParent;
+int g_stringsize;
+stack_t **g_stacktop;
+char *g_variables;
+
+int popstring(char *str)
+{
+        stack_t *th;
+        if (!g_stacktop || !*g_stacktop) return 0;
+        th=(*g_stacktop);
+        lstrcpy(str,th->text);
+        *g_stacktop = th->next;
+        GlobalFree((HGLOBAL)th);
+        return 1;
+}
+
+void pushstring(char *str)
+{
+        stack_t *th;
+        if (!g_stacktop) return;
+        th=(stack_t*)GlobalAlloc(GPTR,sizeof(stack_t)+g_stringsize);
+        lstrcpyn(th->text,str,g_stringsize);
+        th->next=*g_stacktop;
+        *g_stacktop=th;
+}
+
+char *getuservariable(int varnum)
+{
+        if (varnum < 0 || varnum >= __INST_LAST) return NULL;
+        return g_variables+varnum*g_stringsize;
+}
+
+void setuservariable(int varnum, char *var)
+{
+        if (var != NULL && varnum >= 0 && varnum < __INST_LAST) {
+                lstrcpy (g_variables + varnum*g_stringsize, var);
+
+        }
+}
+
+int myatoi(char *s)
+{
+  unsigned int v=0;
+  if (*s == '0' && (s[1] == 'x' || s[1] == 'X'))
+  {
+    s+=2;
+    for (;;)
+    {
+      int c=*s++;
+      if (c >= '0' && c <= '9') c-='0';
+      else if (c >= 'a' && c <= 'f') c-='a'-10;
+      else if (c >= 'A' && c <= 'F') c-='A'-10;
+      else break;
+      v<<=4;
+      v+=c;
+    }
+  }
+  else if (*s == '0' && s[1] <= '7' && s[1] >= '0')
+  {
+    s++;
+    for (;;)
+    {
+      int c=*s++;
+      if (c >= '0' && c <= '7') c-='0';
+      else break;
+      v<<=3;
+      v+=c;
+    }
+  }
+  else
+  {
+    int sign=0;
+    if (*s == '-') { s++; sign++; }
+    for (;;)
+    {
+      int c=*s++ - '0';
+      if (c < 0 || c > 9) break;
+      v*=10;
+      v+=c;
+    }
+    if (sign) return -(int) v;
+  }
+  return (int)v;
+}
+
+int popint(int *value)
+{
+	char buffer[1024];
+	if (popstring(buffer) == 0) return FALSE;
+	*value = myatoi(buffer);
+	return TRUE;
+}
+
+void pushint(int value)
+{
+	char buffer[1024];
+	wsprintf(buffer, "%d", value);
+	pushstring(buffer);
+}
+
+#ifdef _DEBUG
+void main()
+{
+}
+#endif