squeezed gcd python part out as a file

files/gcd-findmatch.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+
+import sys,os,re
+
+Green="\033[32;1m"
+Red="\033[31;1m"
+Reset="\033[0m"
+key_list="1234567890qwertyuiop"
+class getch:
+    def get(self):
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        try:
+            tty.setraw(sys.stdin.fileno())
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return ch
+def printerr(s):
+    sys.stderr.write(s+"\n")
+    sys.stderr.flush()
+# Print help
+if len(sys.argv)==1 or sys.argv[-1]=="-h":
+    printerr("Guess cd: Find first match in folder, interactive if multiple matches\n  Arguments: [dir/]pattern_to_match_folders")
+if sys.argv[-1]=="-h":
+    sys.exit(0)
+
+pattern=".".join(sys.argv[1:])
+pat_base=os.path.basename(pattern)
+pat_dir=os.path.dirname(pattern)
+
+if pat_dir=="":
+    pat_dir="."
+
+if not os.path.exists(pat_dir):
+    printerr("%s: %sNo such folder%s"%(pat_dir,Red,Reset))
+    sys.exit(1)
+# list sub-folders in the folder
+current_folders=[d for d in os.listdir(pat_dir) if os.path.isdir(d)]
+current_folders=[d for d in current_folders if not d.startswith(".")]
+current_folders.sort()
+
+# find matches
+match_case=re.compile(".*"+pat_base+".*")
+repl_case=re.compile("("+pat_base+")")
+
+matching_folders=[d for d in current_folders if match_case.match(d)]
+matches=[repl_case.sub("%s\g<1>%s"%(Green,Reset),d) for d in matching_folders]
+
+# no matches, try case insensitive
+if len(matching_folders)==0:
+    match_nocase=re.compile(".*"+pat_base+".*",re.I)
+    repl_nocase=re.compile("("+pat_base+")",re.I)
+    matching_folders=[d for d in current_folders if match_nocase.match(d)]
+    matches=[repl_nocase.sub("%s\g<1>%s"%(Green,Reset),d) for d in matching_folders]
+
+# One match, print and return
+if len(matching_folders)==1:
+    printerr(matches[0])
+    print(os.path.join(pat_dir,matching_folders[0]))
+    sys.exit(0)
+# No matches
+if len(matching_folders)==0:    
+    printerr("%sno matches%s"%(Red,Reset))
+    sys.exit(1)
+# Many matches, ask the user for folder index
+for i,m in enumerate(matches[0:len(key_list)]):
+    printerr(key_list[i]+": "+m)
+if len(matches)>len(key_list):
+    printerr("Skipping the rest...")
+import termios,tty
+ch=getch()
+key_in=ch.get()
+try:
+    key_index=key_list.index(key_in)
+    key_match=matching_folders[key_index]
+except (ValueError,IndexError) as err:
+    printerr("%s'%s' Not in the list%s"%(Red,key_in,Reset))
+    sys.exit(1)
+print(os.path.join(pat_dir,key_match))