feat(plugins): add aliases cheatsheet plugin (#4662)

* add: explore alias quickly with aliases plugin.

* change: add compatibility with python2 & python3.

- add compatibility.
- add termcolor.py.
- remove aliass(search), just use acs.
- detect python.

1 files changed, 55 insertions, 0 deletions

diff --git a/plugins/aliases/cheatsheet.py b/plugins/aliases/cheatsheet.py
new file mode 100644
index 000000000..d6d507b92
--- /dev/null
+++ b/plugins/aliases/cheatsheet.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+import sys
+import itertools
+import termcolor
+
+def parse(line):
+    left = line[0:line.find('=')].strip()
+    right = line[line.find('=')+1:].strip('\'"\n ')
+    try:
+        cmd = next(part for part in right.split() if len([char for char in '=<>' if char in part])==0)
+    except StopIteration:
+        cmd = right
+    return (left, right, cmd)
+
+def cheatsheet(lines):
+    exps = [ parse(line) for line in lines ]
+    cheatsheet = {'_default': []}
+    for key, group in itertools.groupby(exps, lambda exp:exp[2]):
+        group_list = [ item for item in group ]
+        if len(group_list)==1:
+            target_aliases = cheatsheet['_default']
+        else:
+            if key not in cheatsheet:
+                cheatsheet[key] = []
+            target_aliases = cheatsheet[key]
+        target_aliases.extend(group_list)
+    return cheatsheet
+
+def pretty_print_group(key, aliases, hightlight=None):
+    if len(aliases) == 0:
+        return
+    group_hl_formatter = lambda g, hl: termcolor.colored(hl, 'yellow').join([termcolor.colored(part, 'red') for part in ('[%s]' % g).split(hl)])
+    alias_hl_formatter = lambda alias, hl: termcolor.colored(hl, 'yellow').join([termcolor.colored(part, 'green') for part in ('\t%s = %s' % alias[0:2]).split(hl)])
+    group_formatter = lambda g: termcolor.colored('[%s]' % g, 'red')
+    alias_formatter = lambda alias: termcolor.colored('\t%s = %s' % alias[0:2], 'green')
+    if hightlight and len(hightlight)>0:
+        print (group_hl_formatter(key, hightlight))
+        print ('\n'.join([alias_hl_formatter(alias, hightlight) for alias in aliases]))
+    else:
+        print (group_formatter(key))
+        print ('\n'.join([alias_formatter(alias) for alias in aliases]))
+    print ('')
+
+def pretty_print(cheatsheet, wfilter):
+    sorted_key = sorted(cheatsheet.keys())
+    for key in sorted_key:
+        aliases = cheatsheet.get(key)
+        if not wfilter:
+            pretty_print_group(key, aliases, wfilter)
+        else:
+            pretty_print_group(key, [ alias for alias in aliases if alias[0].find(wfilter)>-1 or alias[1].find(wfilter)>-1], wfilter)
+
+if __name__ == '__main__':
+    lines = sys.stdin.readlines()
+    pretty_print(cheatsheet(lines), sys.argv[1] if len(sys.argv)>1 else None)