findReplaceString

findReplaceCompositionName.jsx

// Function to replace composition name
function findReplaceCompositionName(prefix, replaceStr) {
    // Get the current project
    var currentProject = app.project;

    // Check if a project is open
    if (currentProject) {
        // Get all compositions in the project
        var allComps = currentProject.rootFolder.items;

        // Loop through each composition
        for (var i = 1; i <= allComps.length; i++) {
            var comp = allComps[i];

            // Check if it's a composition
            if (comp instanceof CompItem) {
                // Check if the composition name starts with the specified prefix
                if (comp.name.indexOf(prefix) === 0) {
                    // Find the position of the next underscore after the prefix
                    var underscoreIndex = comp.name.indexOf("_", prefix.length);

                    // Check if an underscore is found
                    if (underscoreIndex !== -1) {
                        // Replace the portion of the composition name
                        comp.name = comp.name.substring(0, prefix.length) + replaceStr + comp.name.substring(underscoreIndex);
                    } else {
                        // If no underscore is found, replace the portion after the prefix
                        comp.name = comp.name.substring(0, prefix.length) + replaceStr;
                    }
                }
            }
        }
    } else {
        // No project is open
        alert("No project is currently open");
    }
}

// Usage: Replace everything after "comp_" with "mustername"
findReplaceCompositionName("comp_", "mustername");