From 41974ae5265fbc23a06f276f9e008d5dad020e0b Mon Sep 17 00:00:00 2001
From: Ben Longbons <b.r.longbons@gmail.com>
Date: Thu, 30 Aug 2012 16:16:25 -0700
Subject: Rename files for C++ conversion. Does not compile.

After updating, you can remove these files, as shown in 'git status':

 Untracked files:
   (use "git add <file>..." to include in what will be committed)

	src/map/magic-interpreter-lexer.c
	src/map/magic-interpreter-parser.c
	src/map/magic-interpreter-parser.h
---
 src/common/lock.cpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/common/lock.cpp

(limited to 'src/common/lock.cpp')

diff --git a/src/common/lock.cpp b/src/common/lock.cpp
new file mode 100644
index 0000000..2ba9a0a
--- /dev/null
+++ b/src/common/lock.cpp
@@ -0,0 +1,36 @@
+#include <unistd.h>
+#include <stdio.h>
+#include "lock.hpp"
+#include "socket.hpp"
+
+/// Protected file writing
+/// (Until the file is closed, it keeps the old file)
+
+// Start writing a tmpfile
+FILE *lock_fopen (const char *filename, int *info)
+{
+    char newfile[512];
+    FILE *fp;
+    int  no = getpid ();
+
+    // Get a filename that doesn't already exist
+    do
+    {
+        sprintf (newfile, "%s_%d.tmp", filename, no++);
+    }
+    while ((fp = fopen_ (newfile, "r")) && (fclose_ (fp), 1));
+    *info = --no;
+    return fopen_ (newfile, "w");
+}
+
+// Delete the old file and rename the new file
+void lock_fclose (FILE * fp, const char *filename, int *info)
+{
+    char newfile[512];
+    if (fp)
+    {
+        fclose_ (fp);
+        sprintf (newfile, "%s_%d.tmp", filename, *info);
+        rename (newfile, filename);
+    }
+}
-- 
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