From Guava 19.0 onward, you may use: boolean isAscii = CharMatcher.ascii().matchesAllOf(someString); This uses the matchesAllOf(someString) method which relies on the factory method ascii() rather than the now deprecated ASCII singleton. Here ASCII includes all ASCII characters including the non-printable characters lower than 0x20 (space) such as tabs, line-feed / return but also BEL with code … Read more
This can happen if you have a newline (or other control character) in a JSON string literal. {“foo”: “bar baz”} If you are the one producing the data, replace actual newlines with escaped ones “\\n” when creating your string literals. {“foo”: “bar\nbaz”}
Try this 1) Window > Preferences > General > Content Types, set UTF-8 as the default encoding for all content types. 2) Window > Preferences > General > Workspace, set Text file encoding to Other : UTF-8
MySQL provides comprehensive character set management that can help with this kind of problem. SELECT whatever FROM tableName WHERE columnToCheck <> CONVERT(columnToCheck USING ASCII) The CONVERT(col USING charset) function turns the unconvertable characters into replacement characters. Then, the converted and unconverted text will be unequal. See this for more discussion. https://dev.mysql.com/doc/refman/8.0/en/charset-repertoire.html You can use any … Read more
In httpd.conf add (or change if it’s already there): AddDefaultCharset utf-8
You cannot determine the encoding of a arbitrary byte stream. This is the nature of encodings. A encoding means a mapping between a byte value and its representation. So every encoding “could” be the right. The getEncoding() method will return the encoding which was set up (read the JavaDoc) for the stream. It will not … Read more
Note: The next section applies primarily to Windows PowerShell. See the section after it for the cross-platform PowerShell Core (v6+) edition. In both cases, the information applies to making PowerShell use UTF-8 for reading and writing files. By contrast, for information on how to send and receive UTF-8-encoded strings to and from external programs, see … Read more
I’ve been struggling with this problem for a while, and just discovered (for me) a perfect solution: $ git config –global diff.tool vimdiff # or merge.tool to get merging too! $ git difftool commit1 commit2 git difftool takes the same arguments as git diff would, but runs a diff program of your choice instead of … Read more
Three words for you: Byte Order Mark (BOM) That’s the representation for the UTF-8 BOM in ISO-8859-1. You have to tell your editor to not use BOMs or use a different editor to strip them out. To automatize the BOM’s removal you can use awk as shown in this question. As another answer says, the … Read more
What you’re asking for is extremely hard. If possible, getting the user to specify the encoding is the best. Preventing an attack shouldn’t be much easier or harder that way. However, you could try doing this: iconv(mb_detect_encoding($text, mb_detect_order(), true), “UTF-8”, $text); Setting it to strict might help you get a better result.