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))

qcd_function

@@ -1,3 +1,33 @@
+
+## improved CD commands:
+
+function gcd() {
+    # guess cd,  find first match in folder, or ask if multiple hits
+    local cdto QCDPATH
+    QCDPATH=$( dirname ${BASH_SOURCE[0]} )
+    cdto=$( python "$QCDPATH"/files/gcd-findmatch.py "$@" )
+    [[ -z "$cdto" ]] && return
+    \cd "$cdto"
+} # gcd ends
+
+function hcd() {
+    [[ "$1" = "-h" ]] && {
+      echo History cd. Run without arguments to see list of entries, number as arg. to change directory.
+      return
+    }
+    local d
+
+    if [ -z "$1" ]
+    then tail -n 20 "$HOME/.bash_cdhistory" | head -n 19 | cut -d: -f2 | tac | cat -n | sed 's,^ \+,,' | tac
+         return
+    fi
+    d=$( tail -n 20 "$HOME/.bash_cdhistory" | head -n 19 | cut -d: -f2 | tac | cat -n | sed 's,^ \+,,' | grep -h "^$1	" )
+    d=${d/*	/}
+    if [ ! -z "$d" ]
+    then \cd "$d" 
+    fi
+}
+
 function cd_history () {
     # Function that replaces "cd". It stores visited folder in ~/.bash_cdhistory
     local old
@@ -17,21 +47,6 @@ function cd_history () {
 }
 alias cd=cd_history
 
-function hcd() {
-    # History cd. Run without arguments to see list of entries, give number to change cwd.
-    local d
-
-    if [ -z "$1" ]
-    then tail -n 20 "$HOME/.bash_cdhistory" | head -n 19 | cut -d: -f2 | tac | cat -n | sed 's,^ \+,,' | tac
-         return
-    fi
-    d=$( tail -n 20 "$HOME/.bash_cdhistory" | head -n 19 | cut -d: -f2 | tac | cat -n | sed 's,^ \+,,' | grep -h "^$1	" )
-    d=${d/*	/}
-    if [ ! -z "$d" ]
-    then \cd "$d" 
-    fi
-}
-
 function qcd() {
     # cd command, that jumps to folders visited in the near history, or user bookmarked folders
     local OPTIND
@@ -120,7 +135,7 @@ complete -F _qcd qcd
         ;;
         h)
             echo 'qcd [-hiLm]|[-al] [name]
-Version: 2015-10-13
+Version: 2017-03-24
 Change current working path based on the list ~/.qcd
 Keeps a history of folders visited in ~/.bash_cdhistory
 
@@ -156,6 +171,112 @@ Keeps a history of folders visited in ~/.bash_cdhistory
     then \cd "$d" 
     fi
     
+} # qcd ends
+
+function ncd() {
+    [[ "$1" = "-h" ]] && {
+      echo Next sibling cd: change directory to [../next_folder]. ncd - to go to previous.
+      return
+    }
+    local _current_pwd _iter_d _iter_prev _current_found
+    _current_pwd=$( basename $( pwd ) )
+    \cd ..
+    for _iter_d in *; do
+        if [ ! -d "$_iter_d" ]; then continue; fi
+        if [ -n "$_current_found" ]; then
+            \cd "$_iter_d"
+            return
+        fi
+        if [ "$_iter_d" = "$_current_pwd" ]; then
+            _current_found=true
+            if [ "$1" = "-" ]; then 
+                if [ -z "$_iter_prev" ]; then
+                    echo $_current_pwd was the first folder.
+                else
+                    \cd "$_iter_prev";
+                    return
+                fi
+            fi
+        fi
+        _iter_prev="$_iter_d"
+    done
+    if [ -n "$_current_found" ]; then
+        echo "$_current_pwd" was the last folder.
+    else
+        echo "$_current_pwd" was not found in ../
+    fi
+}
+
+## File processing functions
+
+function foldermenu_prompt {
+    # Function to add in PS prompt variable, enabling foldermenu support
+    [ -f .foldermenu ] && {
+      foldermenu -lf 10 $@ || echo -n "*"
+    } || { 
+      true
+    }
+}
+
+function igrep () {
+    [[ "$1" = "-h" ]] && [[ "$#" -eq 1 ]] && {
+        echo Interactive grep, read grep arguments
+        return 
+    }
+    local args
+    args="-i -e "
+    while true
+    do read -e -i "$args" args
+       echo $@
+       grep --color=auto $args "$@"
+       if [ "$?" -ne 0 ]
+       then echo _no_matches_  | grep --color=auto ".*"
+       fi
+    done
+
+}
+
+function ised () {
+    [[ "$1" = "-h" ]] && [[ "$#" -eq 1 ]] && {
+        echo Interactive sed, read sed arguments
+        return 
+    }
+    local args
+    if [ ! -f "$1" ]; then echo must give atleast one file; return 1;fi;
+    args="-e s/string//g"
+    while true
+    do read -e -i "$args" args
+       echo input files: "$@"
+       eval sed $args "$@"
+       if [ "$?" -ne 0 ]
+       then echo Error output  | grep --color=auto ".*"
+       fi
+    done
+
+}
+
+function rmv () {
+    [[ "$1" = "-h" ]] && {
+      echo 'mv files/folders with rsync (shows speed and progress)'
+      echo 'Usage: rmv source [source2] [source3] target'
+      return
+    }
+    local sources
+    sources=()
+    # remove / from ends, if target is an existing folder
+    for (( i=1; i<=$(($#-1)); i++ ))
+    do if [ -d "${@: -1}" ]
+       then sources+=("${!i%/}")
+       else sources+=("${!i}")
+       fi
+    done
+    rsync -vaP --remove-source-files "${sources[@]}" "${@: -1}"
+    # remove empty folders from sources (not last argument)
+    for (( i=1; i<=$(($#-1)); i++ ))
+    do if [ -d "${!i}" ]
+       then find "${!i}" -depth  -type d -exec rmdir \{\} \;
+       fi
+    done
 }
 
 function whenfilechanges() {
@@ -205,184 +326,22 @@ function whenfilechanges() {
 
 }
 
-function gcd() {
+# Shell enhancement
-    # guess cd,  find first match in folder, or ask if multiple hits
-    local cdto
-    { cdto=$( python -c '
-import sys,os,re
-if len(sys.argv)==1 or sys.argv[-1]=="-h":
-    print("Arguments: [dir/]pattern_to_match_folders")
-if sys.argv[-1]=="-h":
-    sys.exit(0)
-def G():
-    return "\033[32;1m"
-def R():
-    return "\033[31;1m"
-def Z():
-    return "\033[0m"
-def CS():
-    return "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
-
-pattern=".".join(sys.argv[1:])
-
-pat_dir=os.path.dirname(pattern)
-if pat_dir=="":
-    pat_dir="."
-pat_base=os.path.basename(pattern)
-if not os.path.exists(pat_dir):
-    print(pat_dir+": "+R()+"No such folder"+Z())
-    sys.exit(1)
-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()
-
-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(G()+"\g<1>"+Z(),d) for d in matching_folders]
-
-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(G()+"\g<1>"+Z(),d) for d in matching_folders]
-
-if len(matching_folders)==1:
-    print(matches[0])
-    sys.stderr.write(os.path.join(pat_dir,matching_folders[0]))
-    sys.exit(0)
-if len(matching_folders)==0:    
-    print(R()+"no matches"+Z())
-    sys.exit(1)
-for i,m in enumerate(matches[0:20]):
-    print(CS()[i]+": "+m)
-if len(matches)>20:
-    print("Skipping rest...")
-import termios,tty
-ch=getch()
-key_in=ch.get()
-try:
-    key_index=CS().index(key_in)
-    key_match=matching_folders[key_index]
-except ValueError,IndexError:
-    sys.exit(1)
-sys.stderr.write(os.path.join(pat_dir,key_match))
-' "$@" 2>&1 1>&$out); } {out}>&1 ; \cd "$cdto"
-}
-
-function ncd() {
-    # Next cd: cd to ../[next_folder].   ncd - to go to previous
-    local _current_pwd _iter_d _iter_prev _current_found
-    _current_pwd=$( basename $( pwd ) )
-    \cd ..
-    for _iter_d in *; do
-        if [ ! -d "$_iter_d" ]; then continue; fi
-        if [ -n "$_current_found" ]; then
-            \cd "$_iter_d"
-            return
-        fi
-        if [ "$_iter_d" = "$_current_pwd" ]; then
-            _current_found=true
-            if [ "$1" = "-" ]; then 
-                if [ -z "$_iter_prev" ]; then
-                    echo $_current_pwd was the first folder.
-                else
-                    \cd "$_iter_prev";
-                    return
-                fi
-            fi
-        fi
-        _iter_prev="$_iter_d"
-    done
-    if [ -n "$_current_found" ]; then
-        echo "$_current_pwd" was the last folder.
-    else
-        echo "$_current_pwd" was not found in ../
-    fi
-}
-
-function rmv () {
-    # mv files/folders with rsync (shows speed and progress)
-    local sources
-    sources=()
-    # remove / from ends, if target is an existing folder
-    for (( i=1; i<=$(($#-1)); i++ ))
-    do if [ -d "${@: -1}" ]
-       then sources+=("${!i%/}")
-       else sources+=("${!i}")
-       fi
-    done
-    rsync -vaP --remove-source-files "${sources[@]}" "${@: -1}"
-    # remove empty folders from sources (not last argument)
-    for (( i=1; i<=$(($#-1)); i++ ))
-    do if [ -d "${!i}" ]
-       then find "${!i}" -depth  -type d -exec rmdir \{\} \;
-       fi
-    done
-}
-
-function igrep () {
-    # Interactive grep
-    local args
-    args="-i -e "
-    while true
-    do read -e -i "$args" args
-       echo $@
-       grep --color=auto $args "$@"
-       if [ "$?" -ne 0 ]
-       then echo _no_matches_  | grep --color=auto ".*"
-       fi
-    done
-
-}
-
-function ised () {
-    # Interactive sed
-    local args
-    if [ ! -f "$1" ]; then echo must give atleast one file; return 1;fi;
-    args="-e s/string//g"
-    while true
-    do read -e -i "$args" args
-       echo input files: "$@"
-       eval sed $args "$@"
-       if [ "$?" -ne 0 ]
-       then echo Error output  | grep --color=auto ".*"
-       fi
-    done
-
-}
-
-function foldermenu_prompt {
-    # Function to add in PS prompt variable, enabling foldermenu support
-    [ -f .foldermenu ] && {
-      foldermenu -lf 10 $@ || echo -n "*"
-    } || { 
-      true
-    }
-}
 
 function qbg {
-    # Run a program quiet, and backgrounded
+    [[ "$1" = "-h" ]] && {
+        echo 'Run a command quiet, and backgrounded ( typically X11 executable )'
+        return
+    }
     "$@" &> /dev/null &
 }
 
 function set_term_title {
     # set term in byobu/screen xterm etc..
     [ -z "$1" ] && {
-        echo -e '\033k'$HOSTNAME'\033\\'
+        echo -ne '\033k'$HOSTNAME'\033\\\r'
     } || {
-        echo -e '\033k'$1'\033\\'
+        echo -ne '\033k'$1'\033\\\r'
     }
 }