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-rw-r--r--src/boost/tools/build/src/engine/cwd.cpp101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/boost/tools/build/src/engine/cwd.cpp b/src/boost/tools/build/src/engine/cwd.cpp
new file mode 100644
index 000000000..f216e7151
--- /dev/null
+++ b/src/boost/tools/build/src/engine/cwd.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2002. Vladimir Prus
+ * Copyright 2005. Rene Rivera
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE.txt or copy at
+ * https://www.bfgroup.xyz/b2/LICENSE.txt)
+ */
+
+#include "cwd.h"
+
+#include "jam.h"
+#include "mem.h"
+#include "output.h"
+#include "pathsys.h"
+#include "startup.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+
+/* MinGW on Windows declares PATH_MAX in limits.h */
+#if defined( NT ) && !defined( __GNUC__ )
+# include <direct.h>
+# define PATH_MAX _MAX_PATH
+#else
+# include <unistd.h>
+# if defined( __COMO__ )
+# include <linux/limits.h>
+# endif
+#endif
+
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+
+static OBJECT * cwd_;
+namespace
+{
+ std::string cwd_s;
+}
+
+
+void cwd_init( void )
+{
+ int buffer_size = PATH_MAX;
+ char * cwd_buffer = 0;
+ int error;
+
+ assert( !cwd_ );
+
+ do
+ {
+ char * const buffer = (char *)BJAM_MALLOC_RAW( buffer_size );
+#ifdef OS_VMS
+ /* cwd in POSIX-format */
+ cwd_buffer = getcwd( buffer, buffer_size, 0 );
+#else
+ cwd_buffer = getcwd( buffer, buffer_size );
+#endif
+ error = errno;
+ if ( cwd_buffer )
+ {
+ /* We store the path using its canonical/long/key format. */
+ OBJECT * const cwd = object_new( cwd_buffer );
+ cwd_ = path_as_key( cwd );
+ object_free( cwd );
+ cwd_s = cwd_buffer;
+ }
+ buffer_size *= 2;
+ BJAM_FREE_RAW( buffer );
+ }
+ while ( !cwd_ && error == ERANGE );
+
+ if ( !cwd_ )
+ {
+ errno_puts( "can not get current working directory" );
+ b2::clean_exit( EXITBAD );
+ }
+}
+
+
+OBJECT * cwd( void )
+{
+ assert( cwd_ );
+ return cwd_;
+}
+
+
+void cwd_done( void )
+{
+ assert( cwd_ );
+ object_free( cwd_ );
+ cwd_ = NULL;
+}
+
+
+const std::string & b2::cwd_str()
+{
+ return cwd_s;
+} \ No newline at end of file