More generic case tool

	new file:   functions/rencase.fish
	deleted:    functions/renlow.fish

1 files changed, 80 insertions, 0 deletions

diff --git a/functions/rencase.fish b/functions/rencase.fish
new file mode 100644
index 0000000..b0f691a
--- /dev/null
+++ b/functions/rencase.fish
@@ -0,0 +1,80 @@
+function rencase --description 'Change the case of all files and directories'
+
+function _print_option -a opt -a desc
+  printf "\t%-20s %s\n" $opt $desc
+end
+
+function _display_help
+  echo "usage: rencase <option> [files...]"
+  echo
+  _print_option "-l,--low" "Rename files to lowercase (default)"
+  _print_option "-h,--high" "Rename files to uppercase"
+  _print_option "-n,--nodir" "Don't rename directories"
+  echo
+end
+
+function _low_or_high -a mode -a str
+  switch $mode
+    case low
+      echo (string lower $str)
+    case high
+      echo (string upper $str)
+  end
+end
+
+if not argparse 'l/low' 'h/high' 'n/nodir' -- $argv
+  _display_help
+  return 1
+end
+
+if set -q _flag_low; and set -q _flag_high
+  echo "--low and --high are mutually exclusive options."
+  echo
+  _display_help
+  return 1
+end
+
+set mode 'low'
+
+if set -q _flag_high
+  set mode 'high'
+end
+
+if test (count $argv) -gt 0
+  set targets $argv
+else
+  set targets '.'
+end
+
+for file in (find $targets -type f)
+  set -l element (string split -r -m1 / $file)
+  set -l newname (_low_or_high $mode $element[2])
+  if test -e $element[1]/$newname
+    set_color red
+    echo "File $newname already exists. Skipping."
+    set_color normal
+    continue
+  end
+  mv -- "$file" "$element[1]/$newname"
+end
+
+if not set -q _flag_nodir
+  set -f dirs (find $targets -type d)
+  for dir in $dirs[-1..1] # Rename directories in reverse order
+    set -l element (string split -r -m1 / $dir)
+    set -l newname (_low_or_high $mode $element[2])
+    if not test -z $element[2]; and not test -e $element[1]/$newname # Also catch .
+      mv -- "$dir" "$element[1]/$newname"
+    else
+      set_color red
+      echo "Directory $element[2] already exists. Skipping."
+      set_color normal
+    end
+  end
+end
+
+functions -e _print_option
+functions -e _display_help
+functions -e _low_or_high
+
+end