I'm creating a utility to add archival events to a calendar.
example run
./create-events-from-dvd-contents.swift --path /Volumes/ARCHIVE/DVD\ 1255/2451-01_LLA_Assets\ Folder\ Nov\ 2015/
Optional("DVD 1255")
The class is
class Event {
var location: String? ;
var start: String? ;
var notes: String? ;
}
The code to print the dvd location is
let event = Event() ;
let pathArray = path.characters.split {$0 == "/"}.map { String($0) } ;
event.location = pathArray[2] ;
print(event.location) ;
What is the simplest way to get 'DVD 1255' output instead of 'Optional("DVD 1255")'?
you must unwrap the value first into its own (non optional) variable.
let event = Event() ;
let pathArray = path.characters.split {$0 == "/"}.map { String($0) } ;
event.location = pathArray[2];
if let location = event.location {
print(location);
}
or you could put an ! after event.location if you wanted.
let event = Event() ;
let pathArray = path.characters.split {$0 == "/"}.map { String($0) } ;
event.location = pathArray[2] ;
print(event.location!) ;
The nil-coalescing operator is a clean way to do this:
var x: String? = "foo"
print(x) // Optional('foo')
x = nil
var y: String = x ?? "bar" // note y is not an optional
print(y) // Bar
print(x ?? "Not optional") // Not optional
Also, I noticed you are using semi-colons, which are unnecessary in Swift. I mention this, not as an opinion, but because it is a good practice of Swift to not use semi-colons unless necessary (multiple statements on one line or something)
Related
On my adventure to learn Rust I decided to try and print to the cli contents of the clipboard. I've done this before in Swift so thought I would have much issues in Rust.
However I'm having a hard time printing the contents of the returned NSArray. I've spent a few hours playing around with different functions but haven't made much progress.
The Swift code I have that works:
import Foundation
import AppKit
let pasteboard = NSPasteboard.general
func reload() -> [String]{
var clipboardItems: [String] = []
for element in pasteboard.pasteboardItems! {
if let str = element.string(forType: NSPasteboard.PasteboardType(rawValue: "public.utf8-plain-text")) {
clipboardItems.append(str)
}
}
return clipboardItems;
}
// Access the item in the clipboard
while true {
let firstClipboardItem = reload()
print(firstClipboardItem);
sleep(1);
}
Here is the Rust code:
use cocoa::appkit::{NSApp, NSPasteboard, NSPasteboardReading, NSPasteboardTypeString};
use cocoa::foundation::NSArray;
fn main() {
unsafe {
let app = NSApp();
let pid = NSPasteboard::generalPasteboard(app);
let changec = pid.changeCount();
let pid_item = pid.pasteboardItems();
if pid_item.count() != 0 {
let items = &*pid_item.objectAtIndex(0);
println!("{:?}", items);
}
println!("{:?}", *pid.stringForType(NSPasteboardTypeString));
}
}
The code above produces: *<NSPasteboardItem: 0x6000021a3de0>*
EDIT:
I've made a little progress but stuck on one last bit. I've managed to get the first UTF8 char out of the clipboard.
The issue I have is if I copy the text: World the system will loop the correct amount of times for the word length but will only print the first letter, in this case W. Output below:
TEXT 'W'
TEXT 'W'
TEXT 'W'
TEXT 'W'
TEXT 'W'
The bit I'm trying to get my head around is how to move to the next i8. I can't seem to find a way to point to the next i8.
The NSString function UTF8String() returns *const i8. I'm scratching my head with how one would walk the text.
use cocoa::appkit::{NSApp, NSPasteboard, NSPasteboardTypeString};
use cocoa::foundation::{NSArray, NSString};
fn main() {
unsafe {
let app = NSApp();
let pid = NSPasteboard::generalPasteboard(app);
let changec = pid.changeCount();
let nsarray_ptr = pid.pasteboardItems();
if nsarray_ptr.count() != 0 {
for i in 0..NSArray::count(nsarray_ptr) {
let raw_item_ptr = NSArray::objectAtIndex(nsarray_ptr, i);
let itm = raw_item_ptr.stringForType(NSPasteboardTypeString);
for u in 0..itm.len() {
let stri = itm.UTF8String();
println!("TEXT {:?}", *stri as u8 as char);
}
}
}
}
}
To everyone who's looked/commented on this so far thank you.
After reading some tests provided by cocoa I figured out what I needed to do.
The code below prints the contents of the clipboard. Thanks to those who pointed me in the right direction.
use cocoa::appkit::{NSApp, NSPasteboard, NSPasteboardTypeString};
use cocoa::foundation::{NSArray, NSString};
use std::{str, slice};
fn main() {
unsafe {
let app = NSApp();
let pid = NSPasteboard::generalPasteboard(app);
let nsarray_ptr = pid.pasteboardItems();
if nsarray_ptr.count() != 0 {
for i in 0..NSArray::count(nsarray_ptr) {
let raw_item_ptr = NSArray::objectAtIndex(nsarray_ptr, i);
let itm = raw_item_ptr.stringForType(NSPasteboardTypeString);
let stri = itm.UTF8String() as *const u8;
let clipboard = str::from_utf8(slice::from_raw_parts(stri, itm.len()))
.unwrap();
println!("{}", clipboard);
}
}
}
}
This InDesign Javascript iterates over textStyleRanges and converts text with a few specific appliedFont's and later assigns a new appliedFont:-
var textStyleRanges = [];
for (var j = app.activeDocument.stories.length-1; j >= 0 ; j--)
for (var k = app.activeDocument.stories.item(j).textStyleRanges.length-1; k >= 0; k--)
textStyleRanges.push(app.activeDocument.stories.item(j).textStyleRanges.item(k));
for (var i = textStyleRanges.length-1; i >= 0; i--) {
var myText = textStyleRanges[i];
var converted = C2Unic(myText.contents, myText.appliedFont.fontFamily);
if (myText.contents != converted)
myText.contents = converted;
if (myText.appliedFont.fontFamily == 'Chanakya'
|| myText.appliedFont.fontFamily == 'DevLys 010'
|| myText.appliedFont.fontFamily == 'Walkman-Chanakya-905') {
myText.appliedFont = app.fonts.item("Utsaah");
myText.composer="Adobe World-Ready Paragraph Composer";
}
}
But there are always some ranges where this doesn't happen. I tried iterating in the forward direction OR in the backward direction OR putting the elements in an array before conversion OR updating the appliedFont in the same iteration OR updating it a different one. Some ranges are still not converted completely.
I am doing this to convert the Devanagari text encoded in glyph based non-Unicode encoding to Unicode. Some of this involves repositioning vowel signs etc and changing the code to work with find/replace mechanism may be possible but is a lot of rework.
What is happening?
See also: http://cssdk.s3-website-us-east-1.amazonaws.com/sdk/1.0/docs/WebHelp/app_notes/indesign_text_frames.htm#Finding_and_changing_text
Sample here: https://www.dropbox.com/sh/7y10i6cyx5m5k3c/AAB74PXtavO5_0dD4_6sNn8ka?dl=0
This is untested since I'm not able to test against your document, but try using getElements() like below:
var doc = app.activeDocument;
var stories = doc.stories;
var textStyleRanges = stories.everyItem().textStyleRanges.everyItem().getElements();
for (var i = textStyleRanges.length-1; i >= 0; i--) {
var myText = textStyleRanges[i];
var converted = C2Unic(myText.contents, myText.appliedFont.fontFamily);
if (myText.contents != converted)
myText.contents = converted;
if (myText.appliedFont.fontFamily == 'Chanakya'
|| myText.appliedFont.fontFamily == 'DevLys 010'
|| myText.appliedFont.fontFamily == 'Walkman-Chanakya-905') {
myText.appliedFont = app.fonts.item("Utsaah");
myText.composer="Adobe World-Ready Paragraph Composer";
}
}
A valid approach is to use hyperlink text sources as they stick to the genuine text object. Then you can edit those source texts even if they were actually moved elsewhere in the flow.
//Main routine
var main = function() {
//VARS
var doc = app.properties.activeDocument,
fgp = app.findGrepPreferences.properties,
cgp = app.changeGrepPreferences.properties,
fcgo = app.findChangeGrepOptions.properties,
text, str,
found = [], srcs = [], n = 0;
//Exit if no documents
if ( !doc ) return;
app.findChangeGrepOptions = app.findGrepPreferences = app.changeGrepPreferences = null;
//Settings props
app.findChangeGrepOptions.properties = {
includeHiddenLayers:true,
includeLockedLayersForFind:true,
includeLockedStoriesForFind:true,
includeMasterPages:true,
}
app.findGrepPreferences.properties = {
findWhat:"\\w",
}
//Finding text instances
found = doc.findGrep();
n = found.length;
//Looping through instances and adding hyperlink text sources
//That's all we do at this stage
while ( n-- ) {
srcs.push ( doc.hyperlinkTextSources.add(found[n] ) );
}
//Then we edit the stored hyperlinks text sources 's texts objects contents
n = srcs.length;
while ( n-- ) {
text = srcs[n].sourceText;
str = text.contents;
text.contents = str+str+str+str;
}
//Eventually we remove the added hyperlinks text sources
n = srcs.length;
while ( n-- ) srcs[n].remove();
//And reset initial properties
app.findGrepPreferences.properties = fgp;
app.changeGrepPreferences.properties = cgp;
app.findChangeGrepOptions.properties =fcgo;
}
//Running script in a easily cancelable mode
var u;
app.doScript ( "main()",u,u,UndoModes.ENTIRE_SCRIPT, "The Script" );
My problem is how to get character from a word
The result I needed is
DisplayChar("asd",1)
and it will display "a"
func DisplayChar(word : String, number : Int) -> String{
let i: Int = count(word)
var result = 0
result = i - (i - number)
var str = ""
var j = 0
for j = 0; j < result; j++ {
str = str + word[j]
}
return str
}
DisplayChar("xyz", 2)
This code should work
let sentence = "Hello world"
let characters = Array(sentence)
print(characters[0]) // "H"
There are a couple good solutions in this answer that may work, two good ones duplicated below.
Convert to Array
let word = "test"
var firstChar = Array(word)[0] // t
(Note: this assumes a UTF8 or ASCII encoded string, but that is likely fine for school.)
Create Your Own Extension
First an extension of String to handle subscripts:
extension String {
subscript (i: Int) -> Character {
return self[self.startIndex.advancedBy(i)]
}
subscript (i: Int) -> String {
return String(self[i] as Character)
}
subscript (r: Range<Int>) -> String {
let start = startIndex.advancedBy(r.startIndex)
let end = start.advancedBy(r.endIndex - r.startIndex)
return self[Range(start ..< end)]
}
}
Then you can just use:
let word = "test"
var firstChar = word[0] // t
Swift strings have a method called substringToIndex, "asd".substringToIndex(1) will return "a".
I'm not sure if it works on Swift 1.2, though.
this is my line of code.
budgetLabel.text = String((budgetLabel.text)!.toInt()! - (budgetItemTextBox.text)!.toInt()!)
the code works, but when I try to input a floating value into the textbox the program crashes. I am assuming the strings need to be converted to a float/double data type. I keep getting errors when i try to do that.
In Swift 2 there are new failable initializers that allow you to do this in more safe way, the Double("") returns an optional in cases like passing in "abc" string the failable initializer will return nil, so then you can use optional-binding to handle it like in the following way:
let s1 = "4.55"
let s2 = "3.15"
if let n1 = Double(s1), let n2 = Double(s2) {
let newString = String( n1 - n2)
print(newString)
}
else {
print("Some string is not a double value")
}
If you're using a version of Swift < 2, then old way was:
var n1 = ("9.99" as NSString).doubleValue // invalid returns 0, not an optional. (not recommended)
// invalid returns an optional value (recommended)
var pi = NSNumberFormatter().numberFromString("3.14")?.doubleValue
Fixed: Added Proper Handling for Optionals
let budgetLabel:UILabel = UILabel()
let budgetItemTextBox:UITextField = UITextField()
budgetLabel.text = ({
var value = ""
if let budgetString = budgetLabel.text, let budgetItemString = budgetItemTextBox.text
{
if let budgetValue = Float(budgetString), let budgetItemValue = Float(budgetItemString)
{
value = String(budgetValue - budgetItemValue)
}
}
return value
})()
You need to be using if let. In swift 2.0 it would look something like this:
if let
budgetString:String = budgetLabel.text,
budgetItemString:String = budgetItemTextBox.text,
budget:Double = Double(budgetString),
budgetItem:Double = Double(budgetItemString) {
budgetLabel.text = String(budget - budgetItem)
} else {
// If a number was not found, what should it do here?
}
I have about 2200 different files in a few different folders, and I need to rename about about 1/3 of them which are in their own subfolder. Those 700 are also in various folders as well.
For example, there might be
The top-most folder is Employees, which has a few files in it, then the folder 2002 has a few, 2003 has more files, 2004 etc.
I just need to attach the word "Agreement" before the existing name of each file. So instead of it just being "Joe Schmoe.doc" It would be "Agreement Joe Schmoe.doc" instead.
I've tried googling such scripts, and I can find stuff similar to what I want but it all looks completely foreign to me so I can't understand how I'd modify it to suit my needs.
Oh, and this is for windows server '03.
I need about 2 minutes to write such script for *NIX systems (may be less), but for Windows it is a long song ... ))
I've write simple VBS script for WSH, try it (save to {script-name}.vbs, change Path value (on the first line of the script) and execute). I recommend to test script on small amount of data for the first time just to be sure if it works correctly.
Path = "C:\Users\rootDirectory"
Set FSO = CreateObject("Scripting.FileSystemObject")
Sub visitFolder(folderVar)
For Each fileToRename In folderVar.Files
fileToRename.Name = "Agreement " & fileToRename.Name
Next
For Each folderToVisit In folderVar.SubFolders
visitFolder(folderToVisit)
Next
End Sub
If FSO.FolderExists(Path) Then
visitFolder(FSO.getFolder(Path))
End If
I used to do bulk renaming with batch scripts under Windows. I know it's a snap on *nix (find . -maxdepth N -type f -name "$pattern" | sed -e 'p' -e "s/$str1/$str2/g" | xargs -n2 mv). Buf after some struggle in vain, I found out, to achieve that effect using batch scripts is almost impossible. So I turned to javascript.
With this script, you can add prefix to file names by 'rename.js "s/^/Agreement /" -r *.doc'. A caret(^) means to match the beginning. The '-r' options means 'recursively', i.e. including sub-folders. You can specify a max depth with the '-d N' option. If neither '-r' or '-d N' is given, the script does not recurse.
If you know the *nix 'find' utility, you would notice that 'find' will match the full path (not just the file name part) to specified regular expression. This behavior can be achieved by supplying the '-f' option. By default, this script will match the file name part with the given regular expression.
If you are familiar with regular expressions, complicated renaming is possible. For example, 'rename.js "s/(\d+)/[$1]/" *' which uses grouping to add brackets to number sequences in filenames.
// rename.js --- bulk file renaming utility (like *nix rename.pl)
// (c) Copyright 2012, Ji Han (hanji <at> outlook <dot> com)
// you are free to distribute it under the BSD license.
// oops... jscript doesn't have array.map
Array.prototype.map = function(f, t){
var o = Object(this);
var a = new Array(o.length >>> 0);
for (var i = 0; i < a.length; ++i){ if (i in o) a[i] = f.call(t, o[i], i, o) }
return a;
};
/// main
(function(){
if (WScript.Arguments.Length == 0){
WScript.Echo('rename "<operator>/<pattern>/<string>/[<modifiers>]" [-f] [-r] [-d <maxdepth>] [<files>]');
WScript.Quit(1);
}
var fso = new ActiveXObject('Scripting.FileSystemObject');
// folder is a Folder object [e.g. from fso.GetFolder()]
// fn is a function which operates on File/Folder object
var recurseFolder = function(folder, fn, depth, maxdepth){
if (folder.Files){
for (var e = new Enumerator(folder.Files); !e.atEnd(); e.moveNext()){
fn(e.item())
}
}
if (folder.Subfolders){
for (var e = new Enumerator(folder.SubFolders); !e.atEnd(); e.moveNext()){
fn(e.item());
if (depth < maxdepth){ arguments.callee(e.item(), fn, depth + 1, maxdepth) }
}
}
}
// expand wildcards (asterisk [*] and question mark [?]) recursively
// given path may be relative, and may contain environment variables.
// but wildcards only work for the filename part of a path.
// return an array of full paths of matched files.
// {{{
var expandWildcardsRecursively = function(n, md){
var pattern = fso.GetFileName(n);
// escape regex metacharacters (except \, /, * and ?)
// \ and / wouldn't appear in filename
// * and ? are treated as wildcards
pattern = pattern.replace(/([\[\](){}^$.+|-])/g, '\\$1');
pattern = pattern.replace(/\*/g, '.*'); // * matches zero or more characters
pattern = pattern.replace(/\?/g, '.'); // ? matches one character
pattern = pattern.replace(/^(.*)$/, '\^$1\$'); // matches the whole filename
var re = new RegExp(pattern, 'i'); // case insensitive
var folder = fso.GetFolder(fso.GetParentFolderName(fso.GetAbsolutePathName(n)));
var l = [];
recurseFolder(folder, function(i){ if (i.Name.match(re)) l.push(i.Path) }, 0, md);
return l;
}
// }}}
// parse "<operator>/<pattern>/<string>/[<modifiers>]"
// return an array splitted at unescaped forward slashes
// {{{
var parseExpr = function(s){
// javascript regex doesn't have lookbehind...
// reverse the string and lookahead to parse unescaped forward slashes.
var z = s.split('').reverse().join('');
// match unescaped forward slashes and get their positions.
var re = /\/(\\\\)*(?!\\)/g;
var l = [];
while (m = re.exec(z)){ l.push(m.index) }
// split s at unescaped forward slashes.
var b = [0].concat(l.map(function(x){ return s.length - x }).reverse());
var e = (l.map(function(x){ return s.length - x - 1 }).reverse()).concat([s.length]);
return b.map(function(_, i){ return s.substring(b[i], e[i]) });
}
// }}}
var expr = WScript.Arguments(0);
var args = [];
var options = {};
for (var i = 1; i < WScript.Arguments.Length; ++i){
if (WScript.Arguments(i).substring(0, 1) != '-'){
args.push(WScript.Arguments(i));
} else if (WScript.Arguments(i) == '-f'){
options['fullpath'] = true;
} else if (WScript.Arguments(i) == '-r'){
options['recursive'] = true;
} else if (WScript.Arguments(i) == '-d'){
options['maxdepth'] = WScript.Arguments(++i);
} else if (WScript.Arguments(i) == '--'){
continue;
} else {
WScript.Echo('invalid option \'' + WScript.Arguments(i) +'\'');
WScript.Quit(1);
}
}
if (options['maxdepth']){
var md = options['maxdepth'];
} else if (options['recursive']){
var md = 1<<31>>>0;
} else {
var md = 0;
}
var tokens = parseExpr(expr);
if (tokens.length != 4){
WScript.Echo('error parsing expression \'' + expr + '\'.');
WScript.Quit(1);
}
if (tokens[0] != 's'){
WScript.Echo('<operator> must be s.');
WScript.Quit(1);
}
var pattern = tokens[1];
var substr = tokens[2];
var modifiers = tokens[3];
var re = new RegExp(pattern, modifiers);
for (var i = 0; i < args.length; ++i){
var l = expandWildcardsRecursively(args[i], md);
for (var j = 0; j < l.length; ++j){
var original = l[j];
if (options['fullpath']){
var nouveau = original.replace(re, substr);
} else {
var nouveau = fso.GetParentFolderName(original) + '\\' + fso.GetFileName(original).replace(re, substr);
}
if (nouveau != original){
(fso.FileExists(original) && fso.GetFile(original) || fso.GetFolder(original)).Move(nouveau)
}
}
}
})();