Added format_environment() and unformat_environment().

[nssm.git] / registry.cpp

diff --git a/registry.cpp b/registry.cpp
index 766f73b..cc871b7 100644 (file)
--- a/registry.cpp
+++ b/registry.cpp
@@ -204,6 +204,65 @@ int set_environment(TCHAR *service_name, HKEY key, TCHAR *value, TCHAR **env, un
   return 0;\r
 }\r
 \r
+/* Replace NULL with CRLF. Leave NULL NULL as the end marker. */\r
+int format_environment(TCHAR *env, unsigned long envlen, TCHAR **formatted, unsigned long *newlen) {\r
+  unsigned long i, j;\r
+  *newlen = envlen;\r
+\r
+  if (! *newlen) {\r
+    *formatted = 0;\r
+    return 0;\r
+  }\r
+\r
+  for (i = 0; i < envlen; i++) if (! env[i] && env[i + 1]) ++*newlen;\r
+\r
+  *formatted = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *newlen * sizeof(TCHAR));\r
+  if (! *formatted) {\r
+    *newlen = 0;\r
+    return 1;\r
+  }\r
+\r
+  for (i = 0, j = 0; i < envlen; i++) {\r
+    (*formatted)[j] = env[i];\r
+    if (! env[i]) {\r
+      if (env[i + 1]) {\r
+        (*formatted)[j] = _T('\r');\r
+        (*formatted)[++j] = _T('\n');\r
+      }\r
+    }\r
+    j++;\r
+  }\r
+\r
+  return 0;\r
+}\r
+\r
+/* Strip CR and replace LF with NULL. */\r
+int unformat_environment(TCHAR *env, unsigned long envlen, TCHAR **unformatted, unsigned long *newlen) {\r
+  unsigned long i, j;\r
+  *newlen = 0;\r
+\r
+  if (! envlen) {\r
+    *unformatted = 0;\r
+    return 0;\r
+  }\r
+\r
+  for (i = 0; i < envlen; i++) if (env[i] != _T('\r')) ++*newlen;\r
+  /* Must end with two NULLs. */\r
+  *newlen += 2;\r
+\r
+  *unformatted = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *newlen * sizeof(TCHAR));\r
+  if (! *unformatted) return 1;\r
+\r
+  for (i = 0, j = 0; i < envlen; i++) {\r
+    if (env[i] == _T('\r')) continue;\r
+    if (env[i] == _T('\n')) (*unformatted)[j] = _T('\0');\r
+    else (*unformatted)[j] = env[i];\r
+    j++;\r
+  }\r
+\r
+  return 0;\r
+}\r
+\r
 int expand_parameter(HKEY key, TCHAR *value, TCHAR *data, unsigned long datalen, bool sanitise, bool must_exist) {\r
   TCHAR *buffer = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, datalen);\r
   if (! buffer) {\r