将参数的列表或数组从Obj传递到Applescript

Question

我正在编写沙箱Mac (10.10)应用程序，应该启动一些Applescript。这是一个脚本：

on terminal(params)
tell application "Terminal"
do script "who"
repeat with counter_variable_name from 1 to count of params
    set current_character to item counter_variable_name of params
    do script current_character in window 1
end repeat
end tell
end terminal

这是准备调用的代码：

- (NSAppleEventDescriptor *)commandEventDescriptor:(NSString*) command withParams:(NSArray*)inputParams{
NSUInteger c=1;
NSAppleEventDescriptor *parameters = [NSAppleEventDescriptor listDescriptor];
for (NSString* s in inputParams) {
    NSAppleEventDescriptor *parameter = [NSAppleEventDescriptor descriptorWithString:s];
    [parameters insertDescriptor:parameter atIndex:c]; 
    parameter=nil;
    c++;
}

// target
ProcessSerialNumber psn = {0, kCurrentProcess};
NSAppleEventDescriptor *target = [NSAppleEventDescriptor descriptorWithDescriptorType:typeProcessSerialNumber bytes:&psn length:sizeof(ProcessSerialNumber)];

// function
NSAppleEventDescriptor *function = [NSAppleEventDescriptor descriptorWithString:command];

// event
NSAppleEventDescriptor *event = [NSAppleEventDescriptor appleEventWithEventClass:kASAppleScriptSuite eventID:kASSubroutineEvent targetDescriptor:target returnID:kAutoGenerateReturnID transactionID:kAnyTransactionID];
[event setParamDescriptor:function forKeyword:keyASSubroutineName];
[event setParamDescriptor:parameters forKeyword:keyDirectObject];
parameters=nil;
function=nil;
return event;}

这就是调用：

NSUserAppleScriptTask *automationScriptTask = [self automationScriptTask];
if (automationScriptTask) {
    NSAppleEventDescriptor *event = [self commandEventDescriptor:@"terminal" withParams:@[@"date",@"time"]];
    [automationScriptTask executeWithAppleEvent:event completionHandler:^(NSAppleEventDescriptor *resultEventDescriptor, NSError *error) {
        if (! resultEventDescriptor) {
            NSLog(@"%s AppleScript task error = %@", __PRETTY_FUNCTION__, error);
        }
        else {
            
        }
    }];
}

我的期望是在航站楼取得这样的成就：

macbook:~ xxx$ who macbook:~ xxx$ date macbook:~ xxx$ time

相反，我有：

macbook :xxx$ who macbook :xxx美元d -bash: d:命令找不到 macbook :xxx$ a -bash: a:找不到命令 macbook :xxx$ t -bash: t:命令找不到 macbook :xxx$ e -bash: e:命令找不到

简单地将：我想传递给两个值(“日期”和“时间”)的Applescript数组，但是脚本只接收一个(第一个)值。对角线上的迭代只给我'd'，'a'，'t'，'e‘。

那我哪里出错了？

Answer 1

我想我找到了答案。不完全确定这是否是正确和经典的答案，但它似乎是在正确的方向。无论如何，我对问题的理解是，前面提到的脚本只接受一个参数。我提供了两个参数。因此，脚本礼貌地忽略了第二个参数。我的解决方案是将两个参数打包到一个描述符中，然后作为单个参数使用。更具体的是--以下是相关代码：

- (NSAppleEventDescriptor *)commandEventDescriptor:(NSString*) command withParams:(NSArray*)inputParams{
NSUInteger c=1;
NSAppleEventDescriptor *parameters = [NSAppleEventDescriptor listDescriptor];
for (NSString* s in inputParams) {
    NSAppleEventDescriptor *parameter = [NSAppleEventDescriptor descriptorWithString:s];
    //indexing starts from 1, NOT 0
    [parameters insertDescriptor:parameter atIndex:c];
    parameter=nil;
    c++;
}
// parameter

// target
ProcessSerialNumber psn = {0, kCurrentProcess};
NSAppleEventDescriptor *target = [NSAppleEventDescriptor descriptorWithDescriptorType:typeProcessSerialNumber bytes:&psn length:sizeof(ProcessSerialNumber)];

// function
NSAppleEventDescriptor *function = [NSAppleEventDescriptor descriptorWithString:command];

// event
NSAppleEventDescriptor *event = [NSAppleEventDescriptor appleEventWithEventClass:kASAppleScriptSuite eventID:kASSubroutineEvent targetDescriptor:target returnID:kAutoGenerateReturnID transactionID:kAnyTransactionID];
[event setParamDescriptor:function forKeyword:keyASSubroutineName];

//packing the pair of arguments into one Event Descriptor
NSAppleEventDescriptor* l0=[NSAppleEventDescriptor listDescriptor];
[l0 insertDescriptor:parameters atIndex:1];

[event setParamDescriptor:l0 forKeyword:keyDirectObject];
parameters=nil;
function=nil;
return event;}

现在脚本按照预期的方式运行--打开终端窗口，运行命令"who"，然后命令"date"，然后命令"time“。