cli: rewrite interface pretty printer in phyton3

The old version (bash) where slow and cluttered. This version is much
faster and easier to read / maintain.

Signed-off-by: Richard Alpe <richard@bit42.se>

board/netconf/rootfs/lib/infix/cli-pretty

@@ -0,0 +1,203 @@
+#!/usr/bin/env python3
+import json
+import sys
+import argparse
+
+parser = argparse.ArgumentParser(description="JSON CLI Pretty Printer")
+parser.add_argument("module", help="IETF Module")
+parser.add_argument("-n", "--name", help="Focus on specific name")
+args = parser.parse_args()
+
+class Pad:
+    iface = 15 + 2 # + 2 is ASCII tree for nesting
+    proto = 20
+    state = 15
+    data = 40
+    _data = iface + proto + state
+
+class Decore():
+    @staticmethod
+    def decorate(sgr, txt, restore="0"):
+        return f"\033[{sgr}m{txt}\033[{restore}m"
+
+    @staticmethod
+    def invert(txt):
+        return Decore.decorate("7", txt)
+
+    @staticmethod
+    def red(txt):
+        return Decore.decorate("31", txt, "39")
+
+    @staticmethod
+    def green(txt):
+        return Decore.decorate("32", txt, "39")
+
+class Iface:
+    def __init__(self, data):
+        self.data = data
+        self.name = data.get('name', '')
+        self.index = data.get('if-index', None)
+        self.oper_status = data.get('oper-status', None)
+        self.phys_address = data.get('phys-address', None)
+
+        self.parent = data.get('ietf-if-extensions:parent-interface', None)
+
+        if self.data.get('ietf-ip:ipv4'):
+            self.mtu = self.data.get('ietf-ip:ipv4').get('mtu', None)
+            self.ipv4_addr = self.data.get('ietf-ip:ipv4').get('address', None)
+        else:
+            self.mtu = None
+            self.ipv4_addr = []
+
+        if self.data.get('infix-interfaces:bridge-port'):
+            self.bridge = self.data.get('infix-interfaces:bridge-port').get('bridge', None)
+        else:
+            self.bridge = None
+
+    def is_vlan(self):
+        return self.data['type'] == "iana-if-type:l2vlan"
+
+    def is_etherent(self):
+        return self.data['type'] == "iana-if-type:ethernetCsmacd"
+
+    def is_bridge(self):
+        return self.data['type'] == "iana-if-type:bridge"
+
+    def pr_name(self, pipe=""):
+        print(f"{pipe}{self.name:<{Pad.iface - len(pipe)}}", end="")
+
+
+    def pr_proto_ipv4(self, pipe=''):
+        addr = self.data.get("ietf-ip:ipv4")
+        if not addr:
+            return
+
+        addresses = self.data.get("ietf-ip:ipv4", {}).get("address", [])
+        for addr in addresses:
+            row =  f"{pipe:<{Pad.iface}}"
+            row += f"{'ipv4':<{Pad.proto}}"
+            row += f"{'':<{Pad.state}}{addr['ip']}/{addr['prefix-length']}"
+            print(row)
+
+    def pr_proto_eth(self):
+        row = f"{'ethernet':<{Pad.proto}}"
+        dec = Decore.green if self.data['oper-status'] == "up" else Decore.red
+        row += dec(f"{self.data['oper-status'].upper():<{Pad.state}}")
+        row += f"{self.data['phys-address']:<{Pad.data}}"
+        print(row)
+
+    def pr_bridge(self, _ifaces):
+        self.pr_name(pipe="")
+        self.pr_proto_eth()
+
+
+        lowers = []
+        for _iface in [Iface(data) for data in _ifaces]:
+            if _iface.bridge and _iface.bridge == self.name:
+                lowers.append(_iface)
+
+        if lowers:
+            self.pr_proto_ipv4(pipe='│')
+        else:
+            self.pr_proto_ipv4()
+
+        for i, lower in enumerate(lowers):
+            pipe = '└ ' if (i == len(lowers) -1)  else '├ '
+            lower.pr_name(pipe)
+            lower.pr_proto_eth()
+
+    def pr_vlan(self, _ifaces):
+        self.pr_name(pipe="")
+        self.pr_proto_eth()
+
+        if self.parent:
+            self.pr_proto_ipv4(pipe='│')
+        else:
+            self.pr_proto_ipv4()
+            return
+
+        parent = find_iface(_ifaces, self.parent)
+        if not parent:
+            print(f"Error, didn't find parent interface for vlan {self.name}")
+            sys.exit(1)
+        parent.pr_name(pipe='└ ')
+        parent.pr_proto_eth()
+
+    def pr_iface(self):
+        print(f"{'name':<{20}}: {self.name}")
+        if self.index:
+            print(f"{'index':<{20}}: {self.index}")
+        if self.mtu:
+            print(f"{'mtu':<{20}}: {self.mtu}")
+        if self.oper_status:
+            print(f"{'operational status':<{20}}: {self.oper_status}")
+        if self.phys_address:
+            print(f"{'physical address':<{20}}: {self.phys_address}")
+
+        if self.ipv4_addr:
+            first = True
+            print("")
+            for addr in self.ipv4_addr:
+                key = 'ipv4 addresses' if first else ''
+                print(f"{key:<{20}}: {addr['ip']}/{addr['prefix-length']}")
+                first = False
+
+def find_iface(_ifaces, name):
+    for _iface in [Iface(data) for data in _ifaces]:
+        if _iface.name == name:
+            return _iface
+
+    return False
+
+
+def pr_interface_list(json):
+    hdr = (f"{'INTERFACE':<{Pad.iface}}"
+           f"{'PROTOCOL':<{Pad.proto}}"
+           f"{'STATE':<{Pad.state}}"
+           f"{'DATA':<{Pad.data}}")
+
+    print(Decore.invert(hdr))
+
+    ifaces = sorted(json["ietf-interfaces:interfaces"]["interface"], key=lambda x: x['name'])
+
+    for iface in [Iface(data) for data in ifaces]:
+        if iface.is_bridge():
+            iface.pr_bridge(ifaces)
+            continue
+
+        if iface.is_vlan():
+            iface.pr_vlan(ifaces)
+            continue
+
+        # These interfaces are printed by there parent, such as bridge
+        if iface.parent:
+            continue
+        if iface.bridge:
+            continue
+
+        iface.pr_name()
+        iface.pr_proto_eth()
+        iface.pr_proto_ipv4()
+
+def ietf_interfaces(json, name):
+    if not json or not json.get("ietf-interfaces:interfaces"):
+        print(f"Error, top level \"ietf-interfaces:interfaces\" missing")
+        sys.exit(1)
+
+    if not name:
+        return pr_interface_list(json)
+
+    iface = find_iface(json["ietf-interfaces:interfaces"]["interface"], name)
+    if not iface:
+        print(f"Interface {name} not found")
+        sys.exit(1)
+    return iface.pr_iface()
+
+
+json = json.load(sys.stdin)
+
+if args.module == "ietf-interfaces":
+    sys.exit(ietf_interfaces(json, args.name))
+else:
+    print(f"Error, unknown module {args.module}")
+    sys.exit(1)

src/klish-plugin-infix/xml/infix.xml

@@ -239,9 +239,13 @@
       </COMMAND>
     </SWITCH>
     <ACTION sym="script" interactive="false">
-      name="${KLISH_PARAM_name:-}"
+      if [ -n "$KLISH_PARAM_name" ]; then
       sysrepocfg -f json -X -d operational -m ietf-interfaces | \
-      /lib/infix/json-cfg-pretty "ietf-interfaces" "$name"
+        /lib/infix/cli-pretty "ietf-interfaces" -n "$KLISH_PARAM_name"
+      else
+      sysrepocfg -f json -X -d operational -m ietf-interfaces | \
+        /lib/infix/cli-pretty "ietf-interfaces"
+      fi
     </ACTION>
   </COMMAND>