efl: add eina_file_copy()

it's useful to copy file from one place to another and this will be
used in eio' s implementation.

NOTE: did not use mmap here as mmap faults may be cumbersome to handle
(Eina_File itself does that, but in a nasty way) and the
implementation would be severely different as there is no Eina_File
from FD, and there is no way to inject custom memory/fd into the
Eina_File's fault handling. The performance would not be that
different anyways and the splice() is already in there for systems
with good performance (read: Linux).



SVN revision: 81942

eina/Makefile.am

@@ -13,6 +13,7 @@ eina_array_01.c \
 eina_array_02.c \
 eina_error_01.c \
 eina_file_01.c \
+eina_file_02.c \
 eina_hash_01.c \
 eina_hash_02.c \
 eina_hash_03.c \
@@ -56,6 +57,7 @@ eina_array_01 \
 eina_array_02 \
 eina_error_01 \
 eina_file_01 \
+eina_file_02 \
 eina_hash_01 \
 eina_hash_02 \
 eina_hash_03 \

unsorted/eina/eina_file_02.c

@@ -0,0 +1,37 @@
+//Compile with:
+//gcc -g eina_file_02.c -o eina_file_02 `pkg-config --cflags --libs eina`
+
+#include <stdio.h>
+#include <Eina.h>
+
+static Eina_Bool
+_progress_cb(void *data, unsigned long long done, unsigned long long total)
+{
+   const char **files = data;
+   printf("%5llu/%llu of copy '%s' to '%s'\n", done, total, files[0], files[1]);
+   return EINA_TRUE;
+}
+
+int
+main(int argc, char **argv)
+{
+   Eina_Bool ret;
+
+   if (argc != 3)
+     {
+        fprintf(stderr, "Usage: %s <src> <dst>\n", argv[0]);
+        return EXIT_FAILURE;
+     }
+
+   eina_init();
+
+   ret = eina_file_copy(argv[1], argv[2],
+                        EINA_FILE_COPY_PERMISSION | EINA_FILE_COPY_XATTR,
+                        _progress_cb, argv + 1);
+
+   printf("copy finished: %s\n", ret ? "success" : "failure");
+
+   eina_shutdown();
+
+   return 0;
+}