restructuring mvregex

files/mvregex

@@ -1,37 +1,134 @@
 #!/bin/bash
 
 function helpexit() {
-    echo rename files in current folder replacing arg1 with arg2.
+    echo 'Rename files in current folder, replacing with regex: arg1 -> arg2.'
-    echo '-n for match non ascii, replace with arg2'
+    echo 'Example:    "_\([0-9]\)" "_X\1"'
+    echo 'Options:'
+    echo '    --ng  Do _not_ replace globally (applies to regex replace only)'
+    echo '    --nc  Do _not_ color output'
+    echo 'Modes:'
+    echo '    -n to match non-ascii and non-printable characters, and replace to [arg1]'
+    echo '    -f to replace match [arg1] with format [arg2], ex: -f "[0-9]\+" "%04d"'
+    
     exit
 }
-
-IFS=$'\n'
 [[ -z "$1" ]] && helpexit
-[[ "$1" = "-h" ]] && helpexit
+HIGHLIGHTSRC='\x1b[1;33;40m'
+HIGHLIGHTTGT='\x1b[1;32;40m'
+RESET='\x1b[0m'
+GLOBAL="g"
+unset TGT
+MODE=regex
+for (( i=1; i<=$#; i++ ))
+do  [[ "${!i}" = "-h" ]] && helpexit
+    [[ "${!i}" = "--nc" ]] && {
+            RESET=""
+            HIGHLIGHTSRC=""
+            HIGHLIGHTTGT=""
+            continue
+        }
+    [[ "${!i}" = "--ng" ]] && {
+            GLOBAL=""
+            continue
+        }
+    [[ "${!i}" = "-n" ]] && {
+            MODE=nonascii
+            continue
+        }
+    [[ "${!i}" = "-f" ]] && {
+            MODE=printf
+            continue
+        }
+    [[ -z "$SRC" ]] && {
+            SRC="${!i}"
+            continue
+        }
+    TGT="${!i}"
+done
+IFS=$'\n'
+
+LS="ls"
+$LS --version | grep -q GNU && LS="ls -v"
+LONGEST=8
 
-POSTPROC="sed 's,	, -> ,'"
-which ncsv &>/dev/null && POSTPROC="ncsv -c"
 c=0
-if [ "$1" = "-n" ]
+if [ "$MODE" = "nonascii" ]; then
-then for file in $( ls | grep -P "[\x80-\xFF]" )
+    ## Remove non-ascii characters
-   do echo "$file" '->' "$( echo $file | tr -d \\n\\r | tr -c [:print:] '\000' | sed s/'\x0'/"$2"/g )"
+    for file in $( eval $LS | grep -P "[\x00-\x1F]" ); do [[ ${#file} -gt ${LONGEST} ]] && LONGEST=${#file}; done
+    for file in $( eval $LS | grep -P "[\x80-\xFF]" ); do [[ ${#file} -gt ${LONGEST} ]] && LONGEST=${#file}; done
+    printf "%-${LONGEST}s\t|%s\n" Matching Replaced
+    for file in $( eval $LS| grep -P "[\x00-\x1F]" ); do
+        printf "%-${LONGEST}s\t|%s\n" "$file" \
+            "$( echo $file | tr -d \\n\\r | tr -c [:print:] '\000' | sed s/'\x0'/"$TGT"/g )"
+        c=$(( $c + 1 ))
+    done
+    for file in $( eval $LS | grep -P "[\x80-\xFF]" ); do
+        printf "%-${LONGEST}s\t|%s\n" "$file" \
+            "$( echo $file | tr -d \\n\\r | tr -c [:print:] '\000' | sed s/'\x0'/"$TGT"/g )"
         c=$(( $c + 1 ))
     done
     echo $c' matches. Sure?'
     read i
-   for file in $( ls | grep -P "[\x80-\xFF]" )
+    for file in $( eval $LS | grep -P "[\x00-\x1F]" ); do 
-   do mv -iv -- "$file" "$( echo $file | tr -d \\n\\r | tr -c [:print:] '\000' | sed s/'\x0'/"$2"/g )"
+        mv -iv -- "$file" "$( echo $file | tr -d \\n\\r | tr -c [:print:] '\000' | sed s/'\x0'/"$TGT"/g )"
+    done
+    for file in $( eval $LS | grep -P "[\x80-\xFF]" ); do 
+        mv -iv -- "$file" "$( echo $file | tr -d \\n\\r | tr -c [:print:] '\000' | sed s/'\x0'/"$TGT"/g )"
     done
     exit
 fi
-( 
+
-echo -e "Matching\tReplaced"
+if [ "$MODE" = "printf" ]; then
-for file in $( ls | grep -- "$1" )
+    [[ -z "$TGT" ]] && helpexit
-do echo -e "$file"\\t"$( echo $file | sed s/"$1"/"$2"/g )" 
+    ## string/number formatting
-done ) | eval $POSTPROC | grep --color=always -E "$1|$"
+    for file in $( eval $LS | grep -- "$SRC"); do [[ ${#file} -gt ${LONGEST} ]] && LONGEST=${#file}; done
-echo 'Sure?'
+
-read i
+    printf "%-${LONGEST}s\t|%s\n" Matching Formatted
-for file in $( ls | grep -- "$1" )
+    for file in $( eval $LS | grep -- "$SRC" )
-do mv -iv -- "$file" "$( echo $file | sed s/"$1"/"$2"/g )"
+    do source_match=$( echo $file | grep -h -o -m 1 -- "$SRC" | head -n1 )
+       # remove zeroes from beginning, if matching integers
+       let source_match="10#$source_match" &> /dev/null
+       target_replace=$( printf "$TGT" "$source_match" ) || FORMATTING_ERROR=1
+       source_colored=$( echo $file | sed s/"\($SRC\)"/${HIGHLIGHTSRC}"\1"${RESET}/ )
+       target_colored=$( echo $file | sed s/"$SRC"/${HIGHLIGHTTGT}"${target_replace}"${RESET}/ )
+       length_diff=$(( ${#source_colored} - ${#file} ))
+       pad_length=$(( ${LONGEST} + ${length_diff} ))
+       printf "%-${pad_length}s\t|%s\n" "$source_colored" "$target_colored"
+       [[ "$FORMATTING_ERROR" -eq 1 ]] && exit 1
+       c=$(( $c + 1 ))
+    done 
+    echo $c' matches. Sure?'
+    read i
+    for file in $( eval $LS | grep -- "$2" )
+    do source_match=$( echo $file | grep -h -o -m 1 -- "$SRC" | head -n1 )
+       # remove zeroes from beginning, if matching integers
+       let source_match="10#$source_match" &> /dev/null
+       target_replace=$( printf "$TGT" "$source_match" )
+       mv -iv -- "$file" "$( echo $file | sed s/"$SRC"/"${target_replace}"/ )"
+    done
+    exit
+fi
+
+## Normal regex replace 
+[[ -z "$SRC" ]] && helpexit
+for file in $( eval $LS | grep -- "$SRC"); do [[ ${#file} -gt ${LONGEST} ]] && LONGEST=${#file}; done
+
+printf "%-${LONGEST}s\t|%s\n" Matching Replaced
+for file in $( eval $LS | grep -- "$SRC" ); do 
+    source_colored=$( echo $file | sed s/"\($SRC\)"/${HIGHLIGHTSRC}"\1"${RESET}/$GLOBAL ) || ERROR=1
+    target_colored=$( echo $file | sed s/"$SRC"/${HIGHLIGHTTGT}"${TGT}"${RESET}/$GLOBAL ) || ERROR=1
+    length_diff=$(( ${#source_colored} - ${#file} ))
+    pad_length=$(( ${LONGEST} + ${length_diff} ))
+    printf "%-${pad_length}s\t|%s\n" "$source_colored" "$target_colored"
+    [[ "$ERROR" -eq 1 ]] && {
+        echo "Match='$SRC'"
+        echo "Replace='$TGT'"
+        exit 1
+    }
+    c=$(( $c + 1 ))
+done
+echo $c' matches. Sure?'
+read i
+for file in $( eval $LS | grep -- "$SRC" )
+do mv -iv -- "$file" "$( echo $file | sed s/"$SRC"/"$TGT"/$GLOBAL )"
 done