fileops: Cleanup

Cleaned up the structure of the whole OS-abstraction layer.

fileops.c now contains a set of utility methods for file management used
by the library. These are abstractions on top of the original POSIX
calls.

There's a new file called `posix.c` that contains
emulations/reimplementations of all the POSIX calls the library uses.
These are prefixed with `p_`. There's a specific posix file for each
platform (win32 and unix).

All the path-related methods have been moved from `utils.c` to `path.c`
and have their own prefix.

1 files changed, 54 insertions, 0 deletions

diff --git a/src/posix.h b/src/posix.h
new file mode 100644
index 000000000..eaa89383d
--- /dev/null
+++ b/src/posix.h
@@ -0,0 +1,54 @@
+/*
+ * posix.h - OS agnostic POSIX calls
+ */
+#ifndef INCLUDE_posix_h__
+#define INCLUDE_posix_h__
+
+#include "common.h"
+#include <fcntl.h>
+#include <time.h>
+
+#ifdef GIT_WIN32
+#	include "win32/posix.h"
+#else
+#	include "unix/posix.h"
+#endif
+
+#define S_IFGITLINK 0160000
+#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
+
+#if !defined(O_BINARY)
+#define O_BINARY 0
+#endif
+
+typedef int git_file;
+
+
+/**
+ * Standard POSIX Methods
+ *
+ * All the methods starting with the `p_` prefix are
+ * direct ports of the standard POSIX methods. 
+ *
+ * Some of the methods are slightly wrapped to provide
+ * saner defaults. Some of these methods are emulated
+ * in Windows platforns.
+ *
+ * Use your manpages to check the docs on these.
+ * Straightforward 
+ */
+extern int p_open(const char *path, int flags);
+extern int p_creat(const char *path, int mode);
+extern int p_read(git_file fd, void *buf, size_t cnt);
+extern int p_write(git_file fd, void *buf, size_t cnt);
+extern int p_getcwd(char *buffer_out, size_t size);
+
+#define p_lseek(f,n,w) lseek(f, n, w)
+#define p_stat(p,b) stat(p, b)
+#define p_fstat(f,b) fstat(f, b)
+#define p_chdir(p) chdir(p)
+#define p_rmdir(p) rmdir(p)
+#define p_chmod(p,m) chmod(p, m)
+#define p_close(fd) close(fd)
+
+#endif