[PATCH 4/5] filetype: add command support

[Sascha Hauer]

On Sun, Jan 15, 2012 at 11:00:20AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> this will allow to detect the filetype of a file and export it as filetype
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
>  commands/Kconfig    |    5 +++++
>  commands/Makefile   |    1 +
>  commands/filetype.c |   39 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 45 insertions(+), 0 deletions(-)
>  create mode 100644 commands/filetype.c
> 
> diff --git a/commands/Kconfig b/commands/Kconfig
> index 766428c..c613e22 100644
> --- a/commands/Kconfig
> +++ b/commands/Kconfig
> @@ -181,6 +181,11 @@ config CMD_NANDTEST
>  	select PARTITION_NEED_MTD
>  	prompt "nandtest"
>  
> +config CMD_FILETYPE
> +	tristate
> +	depends on FILETYPE
> +	prompt "filetype"
> +
>  endmenu
>  
>  menu "console                       "
> diff --git a/commands/Makefile b/commands/Makefile
> index 31442b5..a91eed2 100644
> --- a/commands/Makefile
> +++ b/commands/Makefile
> @@ -64,3 +64,4 @@ obj-$(CONFIG_CMD_OFTREE)	+= oftree.o
>  obj-$(CONFIG_CMD_MAGICVAR)	+= magicvar.o
>  obj-$(CONFIG_CMD_IOMEM)		+= iomem.o
>  obj-$(CONFIG_CMD_LINUX_EXEC)	+= linux_exec.o
> +obj-$(CONFIG_CMD_FILETYPE)	+= filetype.o
> diff --git a/commands/filetype.c b/commands/filetype.c
> new file mode 100644
> index 0000000..7c5e907
> --- /dev/null
> +++ b/commands/filetype.c
> @@ -0,0 +1,39 @@
> +/*
> + * (C) Copyright 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> + *
> + * Under GPLv2 Only
> + */
> +
> +#include <common.h>
> +#include <command.h>
> +#include <fs.h>
> +#include <filetype.h>
> +#include <environment.h>
> +
> +static int do_filetype(struct command *cmdtp, int argc, char *argv[])
> +{
> +	enum filetype type;
> +
> +	if (argc < 2)
> +		return COMMAND_ERROR_USAGE;
> +
> +	type = file_name_detect_type(argv[1]);
> +
> +	printf("%s: %s detected\n", argv[1], file_type_to_string(type));

As this is likely to be used in scripts it's probably useful to be able
to suppress this output.

> +
> +	export_env_ull("filetype" , type);

magicvar description?

Also, with exporting the filetype as integer we export the numbers
currently only known in sourcecode. We should add a switch to this
command to dump the number <-> string relationship.

Sascha


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