[PATCH 2/2] add filetype command support
Sascha Hauer
s.hauer at pengutronix.de
Tue Oct 30 10:46:49 EDT 2012
This adds support for a filetype detection command. It can be
used to print a filename on the console or to set a variable
with the detection result for use in shell scripts.
The command also has an option to print the known filetypes
so that a user knows what to match for.
Based on an earlier version from Jean-Christophe.
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
commands/Kconfig | 5 +++
commands/Makefile | 1 +
commands/filetype.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 103 insertions(+)
create mode 100644 commands/filetype.c
diff --git a/commands/Kconfig b/commands/Kconfig
index 16706d3..460bc2c 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -230,6 +230,11 @@ config CMD_TFTP
barebox can mount tftp as a filesystem. This command is only needed to
preserve backward compatibility to the old tftp command.
+config CMD_FILETYPE
+ tristate
+ select FILETYPE
+ prompt "filetype"
+
endmenu
menu "console "
diff --git a/commands/Makefile b/commands/Makefile
index 610be55..6540802 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -76,3 +76,4 @@ obj-$(CONFIG_CMD_READLINK) += readlink.o
obj-$(CONFIG_CMD_LN) += ln.o
obj-$(CONFIG_CMD_CLK) += clk.o
obj-$(CONFIG_CMD_TFTP) += tftp.o
+obj-$(CONFIG_CMD_FILETYPE) += filetype.o
diff --git a/commands/filetype.c b/commands/filetype.c
new file mode 100644
index 0000000..20d335b
--- /dev/null
+++ b/commands/filetype.c
@@ -0,0 +1,97 @@
+/*
+ * (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>
+#include <magicvar.h>
+#include <getopt.h>
+#include <linux/stat.h>
+#include <fs.h>
+
+static int do_filetype(int argc, char *argv[])
+{
+ int opt;
+ enum filetype type;
+ char *filename = NULL;
+ int verbose = -1, list = 0;
+ const char *varname = NULL;
+ struct stat s;
+ int ret;
+
+ while ((opt = getopt(argc, argv, "vls:")) > 0) {
+ switch (opt) {
+ case 'v':
+ verbose = 1;
+ break;
+ case 'l':
+ list = 1;
+ break;
+ case 's':
+ varname = optarg;
+ /* in scripting mode default to nonverbose */
+ if (verbose < 0)
+ verbose = 0;
+ break;
+ default:
+ return COMMAND_ERROR_USAGE;
+ }
+ }
+
+ if (verbose < 0)
+ verbose = 1;
+
+ if (list) {
+ int i;
+
+ printf("known filetypes:\n");
+
+ for (i = 1; i < filetype_max; i++)
+ printf("%-16s: %s\n", file_type_to_short_string(i),
+ file_type_to_string(i));
+ return 0;
+ }
+
+ if (argc - optind < 1)
+ return COMMAND_ERROR_USAGE;
+
+ filename = argv[optind];
+
+ ret = stat(filename, &s);
+ if (ret)
+ return ret;
+
+ if (S_ISDIR(s.st_mode))
+ return -EISDIR;
+
+ type = file_name_detect_type(filename);
+
+ if (verbose)
+ printf("%s: %s (%s)\n", filename,
+ file_type_to_string(type),
+ file_type_to_short_string(type));
+
+ if (varname)
+ setenv(varname, file_type_to_short_string(type));
+
+ return 0;
+}
+
+BAREBOX_CMD_HELP_START(filetype)
+BAREBOX_CMD_HELP_USAGE("filetype [OPTIONS] <file>\n")
+BAREBOX_CMD_HELP_SHORT("detect type of a file and export result to a variable\n")
+BAREBOX_CMD_HELP_OPT("-v", "verbose\n")
+BAREBOX_CMD_HELP_OPT("-s <v>", "set <v> to shortname\n")
+BAREBOX_CMD_HELP_OPT("-l", "list known filetypes\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(filetype)
+ .cmd = do_filetype,
+ .usage = "detect file type",
+ BAREBOX_CMD_HELP(cmd_filetype_help)
+BAREBOX_CMD_END
--
1.7.10.4
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