I know this thread is old but it solved my problem perfectly and I wanted to thank kai for his “mixed” case solution. [Edit: I reposted a new version of the code I think is more useful; just copy the text you want to convert, use this script, and then paste. The newly pasted text will have been converted while on the clipboard.] I post it here in the hopes that it may save someone else some effort:
-- syntax : changeCase of someText to caseType
-- someText (string) : plain or encoded text
-- caseType (string) : the type of case required ("upper", "lower", "sentence", "title" or "mixed")
-- "upper" : all uppercase text (no exceptions)
-- "lower" : all lowercase text (no exceptions)
-- "sentence" : uppercase character at start of each sentence, other characters lowercase (apart from words in sentenceModList)
-- "title" : uppercase character at start of each word, other characters lowercase (no exceptions)
-- "mixed" : similar to title, except for definite and indefinite articles, conjunctions and prepositions (see mixedModList) that don't start a sentence
property lowerStr : "abcdefghijklmnopqrstuvwxyzáà âäãåæçéèêëÃìîïñóòôöõøœúùûüÿ"
property upperStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZÃÀÂÄÃÅÆÇÉÈÊËÃÌÎÃÑÓÒÔÖÕØŒÚÙÛÜŸ"
property alphaList : lowerStr's characters & reverse of upperStr's characters
property sentenceBreak : {".", "!", "?", ":"}
property wordBreak : {space, ASCII character 202, tab}
property everyBreak : wordBreak & sentenceBreak
property whiteSpace : wordBreak & {return, ASCII character 10}
property currList : missing value
property sentenceModList : {"i", "i'm", "i'm", "i've", "i've", "I've", "I've", "I'm", "I'm", "I"} (* could be extended to include certain proper nouns, acronyms, etc. *)
property mixedModList : {"Be", "By Means Of", "In Front Of", "In Order That", "On Account Of", "Whether Or Not", "According To", "As To", "Aside From", "Because Of", "Even If", "Even Though", "In Case", "Inside Of", "Now That", "Only If", "Out Of", "Owing To", "Prior To", "Subsequent To", "A", "About", "Above", "Across", "After", "Against", "Along", "Although", "Among", "An", "And", "Around", "As", "At", "Because", "Before", "Behind", "Below", "Beneath", "Beside", "Between", "Beyond", "But", "By", "De", "Down", "During", "Except", "For", "From", "If", "In", "Inside", "Into", "Like", "Near", "Of", "Off", "On", "Onto", "Or", "Out", "Outside", "Over", "Past", "Since", "So", "The", "Though", "Through", "Throughout", "To", "Under", "Unless", "Until", "Upon", "When", "Whereas", "While", "With", "Within", "Without", "Ye", "ye", "without", "within", "with", "while", "whereas", "when", "upon", "until", "unless", "under", "to", "throughout", "through", "though", "the", "so", "since", "past", "over", "outside", "out", "or", "onto", "on", "off", "of", "near", "like", "into", "inside", "in", "if", "from", "for", "except", "during", "down", "de", "by", "but", "beyond", "between", "beside", "beneath", "below", "behind", "before", "because", "at", "as", "around", "and", "an", "among", "although", "along", "against", "after", "across", "above", "about", "a", "subsequent to", "prior to", "owing to", "out of", "only if", "now that", "inside of", "in case", "even though", "even if", "because of", "aside from", "as to", "according to", "whether or not", "on account of", "in order that", "in front of", "by means of", "be"}
on textItems from currTxt
tell (count currTxt's text items) to if it > 4000 then tell it div 2 to return my (textItems from (currTxt's text 1 thru text item it)) & my (textItems from (currTxt's text from text item (it + 1) to -1))
currTxt's text items
end textItems
on initialCap(currTxt)
tell currTxt to if (count words) > 0 then tell word 1's character 1 to if it is in lowerStr then
set AppleScript's text item delimiters to it
tell my (textItems from currTxt) to return beginning & upperStr's character ((count lowerStr's text item 1) + 1) & rest
end if
currTxt
end initialCap
to capItems from currTxt against breakList
repeat with currBreak in breakList
set text item delimiters to currBreak
if (count currTxt's text items) > 1 then
set currList to my (textItems from currTxt)
repeat with n from 2 to count currList
set my currList's item n to initialCap(my currList's item n)
end repeat
set text item delimiters to currBreak's contents
tell my currList to set currTxt to beginning & ({""} & rest)
end if
end repeat
currTxt
end capItems
on modItems from currTxt against modList
set currList to modList
set currCount to (count modList) div 2
repeat with currBreak in everyBreak
set text item delimiters to currBreak
if (count currTxt's text items) > 1 then repeat with n from 1 to currCount
set text item delimiters to my currList's item n & currBreak
if (count currTxt's text items) > 1 then
set currTxt to textItems from currTxt
set text item delimiters to my currList's item -n & currBreak
tell currTxt to set currTxt to beginning & ({""} & rest)
end if
end repeat
end repeat
currTxt
end modItems
to changeCase of currTxt to caseType
if (count currTxt's words) is 0 then return currTxt
ignoring case
tell caseType to set {upper_Case, lower_Case, sentence_Case, title_Case, mixed_Case} to {it is "upper", it is "lower", it is "sentence", it is "title", it is "mixed"}
end ignoring
if not (upper_Case or lower_Case or title_Case or sentence_Case or mixed_Case) then
error "The term \"" & caseType & "\" is not a valid case type option. Please use \"upper\", \"lower\", \"sentence\", \"title\" or \"mixed\"."
else if upper_Case then
set n to 1
else
set n to -1
end if
considering case
set tid to text item delimiters
repeat with n from n to n * (count lowerStr) by n
set text item delimiters to my alphaList's item n
set currTxt to textItems from currTxt
set text item delimiters to my alphaList's item -n
tell currTxt to set currTxt to beginning & ({""} & rest)
end repeat
if sentence_Case then
set currTxt to initialCap(modItems from (capItems from currTxt against sentenceBreak) against sentenceModList)
else if title_Case or mixed_Case then
set currTxt to initialCap(capItems from currTxt against whiteSpace)
if mixed_Case then set currTxt to initialCap(capItems from (modItems from currTxt against mixedModList) against sentenceBreak)
end if
set text item delimiters to tid
end considering
currTxt
end changeCase
tell application "Finder"
copy (the clipboard as list) to {text_returned}
end tell
set someText to text_returned
set cnvrtdText to (changeCase of someText to "mixed") (* "upper", "lower", "sentence", "title" or "mixed" *)
set the clipboard to cnvrtdText