XCode 调试器：显示长字符串

XCode debugger: display long strings

提问by mcccclean

While debugging a program in XCode I have several CFStringRefvariables that point to strings with lengths around the 200 character mark.

在 XCode 中调试程序时，我有几个CFStringRef变量指向长度在 200 个字符标记左右的字符串。

In the debugger, it only shows the value of these strings up to a certain length and then just ellipses them away. I'd really like to see the full value of the strings.

在调试器中，它只显示这些字符串到一定长度的值，然后将它们省略掉。我真的很想看到字符串的全部价值。

Is there some option I can configure so it doesn't terminate them at arbitrary length?

有没有我可以配置的选项，所以它不会以任意长度终止它们？

回答by Jason Coco

In the debugging console you can get the string value by doing something like:

在调试控制台中，您可以通过执行以下操作来获取字符串值：

(gdb) print (void)CFShow(myCFString)

(gdb) print (void)CFShow(myCFString)

or:

或者：

(gdb) po (NSString*)myCFString

Either of those will display the entire string's contents to the debugging console. It's probably the easiest way to deal with large, variable-length strings or data structures of any kind.

For more information, the printcommand in the debugger basically dumps some data structure to the console. You can also call any functions or whatever, but since print doesn't have access to the function declarations, you have to make sure you provide them implicitly (as shown in the example above), or the print command will complain.

pois a shortcut for print-objectand is the same as print except for Objective-C objects. It basically functions like this:

(gdb) print (const char *)[[theObject debugDescription] UTF8String]

This is really useful for examining things like NSDataobject and NSArray/NSDictionaryobjects.

Either of those will display the entire string's contents to the debugging console. It's probably the easiest way to deal with large, variable-length strings or data structures of any kind.

For more information, the printcommand in the debugger basically dumps some data structure to the console. You can also call any functions or whatever, but since print doesn't have access to the function declarations, you have to make sure you provide them implicitly (as shown in the example above), or the print command will complain.

pois a shortcut for print-objectand is the same as print except for Objective-C objects. It basically functions like this:

(gdb) print (const char *)[[theObject debugDescription] UTF8String]

This is really useful for examining things like NSDataobject and NSArray/NSDictionaryobjects.

For a lot more information on debugging topics, see Technical Note TN2124 - Mac OS X Debugging Magicand (from the debugger console) you can issue the helpcommand as well.

For a lot more information on debugging topics, see Technical Note TN2124 - Mac OS X Debugging Magicand (from the debugger console) you can issue the help命令也是如此。

回答by Shauket Sheikh

If you are compiling c++ project in xcode just use this command

如果您在 xcode 中编译 c++ 项目，请使用此命令

po string_name

po string_name

回答by Alexander Ushakov

To display really long string use method from print long string in xcode 6 debugging console

在 xcode 6 调试控制台中从打印长字符串显示真正的长字符串使用方法

1. In lldb console increase max-string-summary-length

1. 在 lldb 控制台中增加max-string-summary-length

setting set target.max-string-summary-length 10000

1. Print your string with printor pocommands

2. 用print或po命令打印你的字符串

print my_string