From: batt <batt@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Wed, 2 Feb 2011 16:12:16 +0000 (+0000)
Subject: Add new function: kfile_copy().
X-Git-Tag: 2.7.0~294
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=4c8d2e18a125eff3a5d36c7ec6fac486c8be21d5;p=bertos.git

Add new function: kfile_copy().

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4672 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/bertos/io/kfile.c b/bertos/io/kfile.c
index f8981180..ca7e1fc3 100644
--- a/bertos/io/kfile.c
+++ b/bertos/io/kfile.c
@@ -167,6 +167,29 @@ int kfile_gets_echo(struct KFile *fd, char *buf, int size, bool echo)
 #endif /* !CONFIG_KFILE_GETS */
 
 
+kfile_off_t kfile_copy(KFile *src, KFile *dst, kfile_off_t size)
+{
+	char buf[32];
+	kfile_off_t cp_len = 0;
+
+	while (size)
+	{
+		size_t len = MIN(sizeof(buf), (size_t)size);
+		if (kfile_read(src, buf, len) != len)
+			break;
+			
+		size_t wr_len = kfile_write(dst, buf, len);
+		cp_len += wr_len;
+		size -= len;
+		
+		if (wr_len != len)
+			break;
+	}
+		
+	return cp_len;
+}
+
+
 /**
  * Move \a fd file seek position of \a offset bytes from \a whence.
  *
diff --git a/bertos/io/kfile.h b/bertos/io/kfile.h
index 9b0b07d0..56f7d57a 100644
--- a/bertos/io/kfile.h
+++ b/bertos/io/kfile.h
@@ -245,6 +245,16 @@ INLINE size_t kfile_read(struct KFile *fd, void *buf, size_t size)
 int kfile_gets(struct KFile *fd, char *buf, int size);
 int kfile_gets_echo(struct KFile *fd, char *buf, int size, bool echo);
 
+/**
+ * Copy \a size bytes from file \a src to \a dst.
+ * 
+ * \param src Source KFile.
+ * \param dst Destionation KFile.
+ * \param size number of bytes to copy.
+ * \return the number of bytes copied.
+ */
+kfile_off_t kfile_copy(KFile *src, KFile *dst, kfile_off_t size);
+
 /**
  * Write \a size bytes from buffer \a buf into KFile \a fd.
  *