add lsblk parser

README.md

@@ -65,6 +65,7 @@ jc [parser] [options]
 - `--free` enables the `free` parser
 - `--ifconfig` enables the `ifconfig` parser
 - `--ls` enables the `ls` parser
+- `--lsblk` enables the `lsblk` parser
 - `--netstat` enables the `netstat` parser
 - `--ps` enables the `ps` parser
 - `--route` enables the `route` parser
@@ -261,6 +262,54 @@ $ ls -l /bin | jc --ls -p
   ...
 ]
 ```
+### lsblk
+```
+$ lsblk | jc --lsblk -p
+[
+  {
+    "NAME": "loop0",
+    "MAJ:MIN": "7:0",
+    "RM": "0",
+    "SIZE": "54.5M",
+    "RO": "1",
+    "TYPE": "loop",
+    "MOUNTPOINT": "/snap/core18/1223"
+  },
+  {
+    "NAME": "sda",
+    "MAJ:MIN": "8:0",
+    "RM": "0",
+    "SIZE": "20G",
+    "RO": "0",
+    "TYPE": "disk"
+  },
+  {
+    "NAME": "sda1",
+    "MAJ:MIN": "8:1",
+    "RM": "0",
+    "SIZE": "1M",
+    "RO": "0",
+    "TYPE": "part"
+  },
+  {
+    "NAME": "sda2",
+    "MAJ:MIN": "8:2",
+    "RM": "0",
+    "SIZE": "20G",
+    "RO": "0",
+    "TYPE": "part",
+    "MOUNTPOINT": "/"
+  },
+  {
+    "NAME": "sr0",
+    "MAJ:MIN": "11:0",
+    "RM": "1",
+    "SIZE": "64.8M",
+    "RO": "0",
+    "TYPE": "rom"
+  }
+]
+```
 ### netstat
 ```
 $ netstat -p | jc --netstat -p

changelog.txt

@@ -4,6 +4,7 @@ jc changelog
 - Add env parser
 - Add df parser
 - Add free parser
+- Add lsblk parser
 
 20191021 v0.6.4
 - Flatten netstat parser output

jc/jc.py

@@ -11,6 +11,7 @@ import jc.parsers.env
 import jc.parsers.free
 import jc.parsers.ifconfig
 import jc.parsers.ls
+import jc.parsers.lsblk
 import jc.parsers.netstat
 import jc.parsers.ps
 import jc.parsers.route
@@ -38,6 +39,9 @@ def main():
     elif '--ls' in sys.argv:
         result = jc.parsers.ls.parse(data)
 
+    elif '--lsblk' in sys.argv:
+        result = jc.parsers.lsblk.parse(data)
+
     elif '--netstat' in sys.argv:
         result = jc.parsers.netstat.parse(data)
 
@@ -56,6 +60,7 @@ def main():
         print('        --free       free parser', file=sys.stderr)
         print('        --ifconfig   iconfig parser', file=sys.stderr)
         print('        --ls         ls parser', file=sys.stderr)
+        print('        --lsblk      lsblk parser', file=sys.stderr)
         print('        --netstat    netstat parser', file=sys.stderr)
         print('        --ps         ps parser', file=sys.stderr)
         print('        --route      route parser\n', file=sys.stderr)

jc/parsers/lsblk.py

@@ -0,0 +1,70 @@
+"""jc - JSON CLI output utility lsblk Parser
+
+Usage:
+    specify --lsblk as the first argument if the piped input is coming from lsblk
+
+Example:
+
+$ lsblk | jc --lsblk -p
+[
+  {
+    "NAME": "loop0",
+    "MAJ:MIN": "7:0",
+    "RM": "0",
+    "SIZE": "54.5M",
+    "RO": "1",
+    "TYPE": "loop",
+    "MOUNTPOINT": "/snap/core18/1223"
+  },
+  {
+    "NAME": "sda",
+    "MAJ:MIN": "8:0",
+    "RM": "0",
+    "SIZE": "20G",
+    "RO": "0",
+    "TYPE": "disk"
+  },
+  {
+    "NAME": "sda1",
+    "MAJ:MIN": "8:1",
+    "RM": "0",
+    "SIZE": "1M",
+    "RO": "0",
+    "TYPE": "part"
+  },
+  {
+    "NAME": "sda2",
+    "MAJ:MIN": "8:2",
+    "RM": "0",
+    "SIZE": "20G",
+    "RO": "0",
+    "TYPE": "part",
+    "MOUNTPOINT": "/"
+  },
+  {
+    "NAME": "sr0",
+    "MAJ:MIN": "11:0",
+    "RM": "1",
+    "SIZE": "64.8M",
+    "RO": "0",
+    "TYPE": "rom"
+  }
+]
+"""
+
+
+def parse(data):
+
+    # code adapted from Conor Heine at:
+    # https://gist.github.com/cahna/43a1a3ff4d075bcd71f9d7120037a501
+
+    cleandata = data.splitlines()
+    headers = [h for h in ' '.join(cleandata[0].strip().split()).split() if h]
+
+    raw_data = map(lambda s: s.strip().split(None, len(headers) - 1), cleandata[1:])
+    output = [dict(zip(headers, r)) for r in raw_data]
+
+    for entry in output:
+        entry['NAME'] = entry['NAME'].encode('ascii', errors='ignore').decode()
+
+    return output