从以“ name：”开头的字符串中获取参数

Question

I have:

String query = IRON_SWORD 1 name:&aMagic_Iron_Sword lore:&5Magic|is|amazing sharpness:10 hide_enchants

I split it into args:

String[] args = s.split(" ");

Now how do I get the argument starting with name: Note, I don't mean getting it with args[2] because the name could be the 5th or 4th arg.

Answer 1

The regex \\sname:(\\S*) will successfully find it in the larger string (without the split call).

Here's sample code:

    String s = "IRON_SWORD 1 nme:&aMagic_Iron_Sword lore:&5Magic|is|amazing sharpness:10 hide_enchants";
    Pattern p = Pattern.compile("\\sname:(\\S*)");
    Matcher m = p.matcher(s);
    if (m.find())
    {
        String name = m.group(1);
    }

Answer 2

You may use regex.

Pattern p = Pattern.compile("(?<=\\bname:)\\S+");
Matcher m = p.matcher(s);
while(m.find())
{
System.out.println(m.group());
}

Answer 3

What about trying:

foreach args as find
{
    searched = split (find, ":")
    if searched[0] == 'name' 
    {
         result = searched[1]
    }
}

I dont know what language you are using but I am sure you could adapt.

Answer 4

Three approaches come to mind:

1. Search your split results for the element that startsWith() "name", then split that and get the element at index 1.
2. Utilize String.indexOf() and String.substring() to exact what you're looking for
3. Use regex pattern "name:(\\\\S*) " and capture the data you want into group 1

Examples of these approaches:

public static void main(String[] args) throws Exception {
    String query = "IRON_SWORD 1 name:&aMagic_Iron_Sword lore:&5Magic|is|amazing sharpness:10 hide_enchants";

    System.out.println(getNameSplit(query));
    System.out.println(getNameSubstring(query));
    System.out.println(getNameRegex(query));
}

public static String getNameSplit(String query) {
    String[] pieces = query.split(" ");
    for (String piece : pieces) {
        if (piece.startsWith("name")) {
            return piece.split(":")[1];
        }
    }
    return null;
}

public static String getNameSubstring(String query) {
    int nameIndex = query.indexOf("name:");
    int spaceIndexAfterName = query.indexOf(" ", nameIndex);
    // +5 to skip name:
    return query.substring(nameIndex + 5, spaceIndexAfterName);
}

public static String getNameRegex(String query) {
    Matcher matcher = Pattern.compile("name:(\\S*) ").matcher(query);
    if (matcher.find()) {
        return matcher.group(1);
    }
    return null;
}

Results:

&aMagic_Iron_Sword
&aMagic_Iron_Sword
&aMagic_Iron_Sword