/* myUpdateLinksAfterMoving.jsx an InDesign document 
© 2022 Gerald Hemetsberger 
*/ 
 
var doc = null; // this will be the active document  
var folder // folder object  
var ActiveFilename, ActiveFolder, ActivePath; // active InDesign document name, its folder, and its ablsolute path  
 
// alert("Stop 0");  
 
try {  
doc = app.activeDocument; // get the acitve document  
}  
catch(err){  
// oh oh no active doc  
alert ("You have no document in InDesign open!\n" +err);  
exit();  
}  
 
// alert("Stop 1");  
 
try{  
folder = Folder(doc.filePath) // get the folder  
// folder.execute() //open it  
}  
catch(err){  
alert ("You have forgotten to save the active document!"); // never been saved  
exit();  
}  
 
ActiveFilename=doc.name;  
ActiveFolder=folder.name;  
ActivePath=(doc.fullName.parent.fsName).toString() //.replace(/\\/g, '/');  
 
// alert("File name:\t" + ActiveFilename +"\nFolder:\t"+ ActiveFolder +"\nPath:\t"+ ActivePath);  
 
 
/*  
Re-Linking  
*/  
 
explanation = "This script is intended to update the links in an active InDesign file when you have moved with it. ";  
explanation = explanation + "We assume that all necessary linked files are also in the copied subdirectory structure. ";  
explanation = explanation + "The paths of linked files are updated if they contain the name of the active folder:\n";  
explanation = explanation + "The absolute path part is exchanged for the current one while the relative path parts are preserved.\n\n";  
explanation = explanation + "Caution: The procedure will not work correctly if linked files have names that include the current folder name.\n\n\n";  
explanation = explanation + "Do you want to continue?"  
 
if (confirm(explanation) != 1) {  
exit();  
}  
 
 
// To work with links  
var i, k;  
var allLinks = doc.links; // set array allLinks to collection of all links  
var currentLink, newPath, IndexFound, newFile, oldFile;  
 
// To display missing files at new location:  
var NumMissingFiles = 0;  
var NumExternalFiles = 0;  
var showList = new Array();  
var showListExternals = new Array();  
var DisplayList = new Array();  
var DisplayListExternals = new Array();  
 
for (i = allLinks.length-1; i >= 0; i--) { // loop through all links backwards  
currentLink = allLinks[i]; // set the variable currentLink to the current link  
// alert("Existing link: " + currentLink.filePath.toString()); // show current path link  
oldFile = new File(currentLink.filePath);  
 
if(currentLink.filePath.lastIndexOf(ActiveFolder) >= 0) {  
IndexFound = currentLink.filePath.lastIndexOf(ActiveFolder) + ActiveFolder.length; // find index of active folder name farthest back in the link path  
// alert(IndexFound.toString()); // show index  
 
newPath = ActivePath + currentLink.filePath.toString().substring(IndexFound);  
// alert("newPath:\t" + newPath); // show new path  
 
newFile = new File(newPath);  
if(newPath != currentLink.filePath.toString()) {  
// alert("Path needs update!");  
if (newFile.exists){  
currentLink.relink(newFile);    // relink only if the file exists  
// I use try-catch block to make the script compatible with CS3 and above  
// In other words, if an error occurs here, skip it over and go on  
try {  
currentLink.update();  
}  
catch(err) {}     
}  
else {  
// alert("No path change and action required as file is missing in the new location: " + newPath);  
showList[NumMissingFiles] = currentLink.filePath.toString() + '\n' + newPath;  
NumMissingFiles = NumMissingFiles + 1;  
}  
}  
else {  
// alert("I do nothing as path already points to new locationt!"); 
if (!newFile.exists){  
// alert("Action required as file is missing in the new location: " + newPath);  
showList[NumMissingFiles] = currentLink.filePath.toString();  
NumMissingFiles = NumMissingFiles + 1;  
}  
}  
}  
else {  
// alert("I do nothing as path is outside active folder!");  
if (!oldFile.exists){  
// alert("Action required as file is missing in an external location: " + currentLink.filePath.toString());  
showListExternals[NumExternalFiles] = 'Missing: ' + currentLink.filePath.toString();  
NumExternalFiles = NumExternalFiles + 1;  
}  
else {  
showListExternals[NumExternalFiles] = 'Existing: ' + currentLink.filePath.toString();  
NumExternalFiles = NumExternalFiles + 1;  
}  
}  
}  
 
/*  
Reporting  
*/  
 
// Reporting on files that are missing in the NEW location:  
if (showList.length > 0 ) { // report only if needed  
showList.sort(); // sorting reporting content  
for (k=0;k<=showList.length/50;k++){  
 
for (i=0;i<50;i++){  
 
var count = k*50+i+1;  
 
if (count <= showList.length) {  
 
DisplayList [i]= '# ' + leftPad(count,3) + '\t'+ showList [count-1] + '\n';  
 
}  
else {  
DisplayList [i] = "";  
}  
 
};  
 
alert (DisplayList.join('\n'),'Action required as ' + showList.length +' files are missing in the NEW location:');  
}  
}  
 
// Reporting on EXTERNAL files:  
if (showListExternals.length > 0 ) { // report only if needed  
showListExternals.sort(); // sorting reporting content  
for (k=0;k<=showListExternals.length/50;k++){  
 
for (i=0;i<50;i++){  
 
var count = k*50+i+1;  
 
if (count <= showListExternals.length) {  
 
DisplayListExternals [i]= '# ' + leftPad(count,3) + '\t'+ showListExternals [count-1] + '\n';  
 
}  
else {  
DisplayListExternals [i] = "";  
}  
 
};  
 
alert (DisplayListExternals.join('\n'), showListExternals.length +' links point to EXTERNAL locations:');  
}  
}  
 
 
alert("I am done!");  
 
function leftPad(number, targetLength) {  
var output = number + '';  
while (output.length < targetLength) {  
output = '0' + output;  
}  
return output;  
} 

 
if (newFile.exists){  
currentLink.relink(newFile); // relink only if the file exists  
 
// I use try-catch block to make the script compatible with CS3 and above  
// In other words, if an error occurs here, skip it over and go on  
try {  
currentLink.update();  
}  
catch(err) {}  
}  
// alert("No path change and action required as file is missing in the new location: " + newPath);  
showList[NumMissingFiles] = currentLink.filePath.toString() + '\n' + newPath;  
NumMissingFiles = NumMissingFiles + 1;  
}  
else {  
// alert("I do nothing as path already points to new locationt!"); 

if (newFile.exists){ 
                        currentLink.relink(newFile);    // relink only if the file exists 
             
                        // I use try-catch block to make the script compatible with CS3 and above 
                        // In other words, if an error occurs here, skip it over and go on 
                        try { 
                            currentLink.update(); 
                        } 
                        catch(err) {}    
                    } 
                else { 
                    // alert("No path change and action required as file is missing in the new location: " + newPath); 
                    showList[NumMissingFiles] = currentLink.filePath.toString() + '\n' + newPath; 
                    NumMissingFiles = NumMissingFiles + 1; 
                    } 
                } 
            else { 
                // alert("I do nothing as path already points to new locationt!");