add option to output fsinfo as raw filenames

[remcoder]

Consuming the fsinfo output with other tools is cumbersome currently. Here's a real life example.

I wanted to remove all *.lc files from the filesystem and I figured I could just iterate over the list of files using a simple bash script. This was a little more involved as:

• the default output has additional cruft (although it's nice for a human use)
• json output is actually not that easy to use from a bash script
• status messages are printed despite --silent (see --silent is not completely silent #12)

The script that I ended up with was this:

for file in `nodemcu-tool fsinfo --json | tail -n +2 | jq .files[].name -r | grep .lc`
do
  echo "removing ${file}"
  nodemcu-tool remove ${file}
done

Here I used tail to skip the first line, which is a status message. Then I used jq to parse the json output and turn it into a plain list of filenames.

I think this should be as easy as:

for file in `nodemcu-tool fsinfo --raw | grep .lc`
do
  echo "removing ${file}"
  nodemcu-tool remove ${file}
done

[AndiDittrich]

maybe it is a better idea to add wildcard/glob support to the remove command ?

adding support for a "raw" format to the fsinfo command is pretty easy, if you like i will add it asap

[remcoder]

I guess wildcard support for remove would be the best solution for the problem I had. This probably more directly useful to other users as well.

[AndiDittrich]

--raw option is added to the fsinfo command. you can try it out using the current master branch

The Format is: <filename>\t<size>\n

Example 1 - RAW Format

andi@sapphire:~/Development/IoT/NodeMCU-Tool$ ./nodemcu-tool fsinfo --raw
dev/f2.lc       96
helloworld.lua  382
f3.lua  19
f2.lua  19
helloworld.lc   492
dev/f1.lc       96
dev/f3.lc       96
f1.lua  18

Example 2 - Extract the filenames

andi@sapphire:~/Development/IoT/NodeMCU-Tool$ ./nodemcu-tool fsinfo --raw | cut -f1
dev/f2.lc
helloworld.lua
f3.lua
f2.lua
helloworld.lc
dev/f1.lc
dev/f3.lc
f1.lua

[remcoder]

Nice work. Personally I'd expect a raw output to be nothing but filenames. No need for file sizes. What do you think?

[AndiDittrich]

changed :)

[remcoder]

That's actually really cool! Awesome ;-)