[RFC PATCH 1/2] commands/cp: add verbose mode which displays progress bar

[Hubert Feurstein]

Signed-off-by: Hubert Feurstein <h.feurstein at gmail.com>
---
 commands/cp.c            |   20 ++++++++++++++------
 drivers/usb/gadget/dfu.c |    2 +-
 include/libbb.h          |    2 +-
 lib/copy_file.c          |   20 +++++++++++++++++++-
 4 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/commands/cp.c b/commands/cp.c
index 3428105..bbe350d 100644
--- a/commands/cp.c
+++ b/commands/cp.c
@@ -44,8 +44,15 @@ static int do_cp(struct command *cmdtp, int argc, char *argv[])
 	struct stat statbuf;
 	int last_is_dir = 0;
 	int i;
+	int verbose = 0;
+	int argc_min = 3;

-	if (argc < 3)
+	if (argc >= argc_min && strcmp(argv[1], "-v") == 0) {
+		verbose = 1;
+		argc_min++;
+	}
+
+	if (argc < argc_min)
 		return COMMAND_ERROR_USAGE;

 	if (!stat(argv[argc - 1], &statbuf)) {
@@ -53,21 +60,22 @@ static int do_cp(struct command *cmdtp, int argc, char *argv[])
 			last_is_dir = 1;
 	}

-	if (argc > 3 && !last_is_dir) {
+	if (argc > argc_min && !last_is_dir) {
 		printf("cp: target `%s' is not a directory\n", argv[argc - 1]);
 		return 1;
 	}

-	for (i = 1; i < argc - 1; i++) {
+	i = (!verbose) ? 1 : 2;
+	for (; i < argc - 1; i++) {
 		if (last_is_dir) {
 			char *dst;
 			dst = concat_path_file(argv[argc - 1], basename(argv[i]));
-			ret = copy_file(argv[i], dst);
+			ret = copy_file(argv[i], dst, verbose);
 			if (ret)
 				goto out;
 			free(dst);
 		} else {
-			ret = copy_file(argv[i], argv[argc - 1]);
+			ret = copy_file(argv[i], argv[argc - 1], verbose);
 			if (ret)
 				goto out;
 		}
@@ -79,7 +87,7 @@ out:
 }

 BAREBOX_CMD_HELP_START(cp)
-BAREBOX_CMD_HELP_USAGE("cp <source> <destination>\n")
+BAREBOX_CMD_HELP_USAGE("cp [-v] <source> <destination>\n")
 BAREBOX_CMD_HELP_SHORT("copy file from <source> to <destination>.\n")
 BAREBOX_CMD_HELP_END

diff --git a/drivers/usb/gadget/dfu.c b/drivers/usb/gadget/dfu.c
index 1387c6d..0a0d244 100644
--- a/drivers/usb/gadget/dfu.c
+++ b/drivers/usb/gadget/dfu.c
@@ -259,7 +259,7 @@ static int handle_dnload(struct usb_function *f, const struct usb_ctrlrequest *c
 				ret = -EINVAL;
 				goto err_out;
 			}
-			ret = copy_file(DFU_TEMPFILE, dfu_devs[dfualt].dev);
+			ret = copy_file(DFU_TEMPFILE, dfu_devs[dfualt].dev, 0);
 			if (ret) {
 				printf("copy file failed\n");
 				ret = -EINVAL;
diff --git a/include/libbb.h b/include/libbb.h
index 0962969..2d17c3f 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -26,7 +26,7 @@ int recursive_action(const char *fileName, unsigned flags,

 char * safe_strncpy(char *dst, const char *src, size_t size);

-int copy_file(const char *src, const char *dst);
+int copy_file(const char *src, const char *dst, int verbose);

 int process_escape_sequence(const char *source, char *dest, int destlen);

diff --git a/lib/copy_file.c b/lib/copy_file.c
index 809befe..e4bb07c 100644
--- a/lib/copy_file.c
+++ b/lib/copy_file.c
@@ -4,6 +4,7 @@
 #include <errno.h>
 #include <malloc.h>
 #include <libbb.h>
+#include <progress.h>

 #define RW_BUF_SIZE	(ulong)4096

@@ -11,13 +12,14 @@
  * @param[in] src FIXME
  * @param[out] dst FIXME
  */
-int copy_file(const char *src, const char *dst)
+int copy_file(const char *src, const char *dst, int verbose)
 {
 	char *rw_buf = NULL;
 	int srcfd = 0, dstfd = 0;
 	int r, w;
 	int ret = 1;
 	void *buf;
+	int total = 0;

 	rw_buf = xmalloc(RW_BUF_SIZE);

@@ -33,6 +35,15 @@ int copy_file(const char *src, const char *dst)
 		goto out;
 	}

+	if (verbose) {
+		struct stat statbuf;
+
+		if (stat(src, &statbuf) < 0)
+			statbuf.st_size = 0;
+
+		init_progression_bar(statbuf.st_size);
+	}
+
 	while(1) {
 		r = read(srcfd, rw_buf, RW_BUF_SIZE);
 		if (r < 0) {
@@ -51,11 +62,18 @@ int copy_file(const char *src, const char *dst)
 			}
 			buf += w;
 			r -= w;
+			total += w;
 		}
+
+		if (verbose)
+			show_progress(total);
 	}

 	ret = 0;
 out:
+	if (verbose)
+		putchar('\n');
+
 	free(rw_buf);
 	if (srcfd > 0)
 		close(srcfd);
--
1.7.4.1