A High Performance PCRE Regex Package That Uses A Cache.
Simplifies the the go-pcre regex package. After calling a regex, the compiled output gets cached to improve performance.
This package uses the go-pcre package for better performance.
If you need better compatability, checkout my other RE2 based module go-regex-re2.
go get github.com/AspieSoft/go-regex/v8
sudo apt install libpcre3-dev
sudo dnf install pcre-devel
sudo yum install pcre-dev
import (
"github.com/AspieSoft/go-regex/v8"
// or for verbose function names
"github.com/AspieSoft/go-regex/v8/verbose"
)
// this example will use verbose mode to make function names more clear
// pre compile a regex into the cache
// this method also returns the compiled pcre.Regexp struct
regex.Compile(`re`)
// compile a regex and safely escape user input
regex.Compile(`re %1`, `this will be escaped .*`); // output: this will be escaped \.\*
regex.Compile(`re %1`, `hello \n world`); // output: hello \\n world (note: the \ was escaped, and the n is literal)
tree/v4.0.0
// use %n to reference a param
// use %{n} for param indexes with more than 1 digit
regex.Compile(`re %1 and %2 ... %{12}`, `param 1`, `param 2` ..., `param 12`);
// manually escape a string
// note: the compile methods params are automatically escaped
regex.Escape(`(.*)? \$ \\$ \\\$ regex hack failed`)
// determine if a regex is valid, and can be compiled by this module
regex.IsValid(`re`)
// determine if a regex is valid, and can be compiled by the PCRE module
regex.IsValidPCRE(`re`)
// determine if a regex is valid, and can be compiled by the builtin RE2 module
regex.IsValidRE2(`re`)
// run a replace function (most advanced feature)
regex.Compile(`(?flags)re(capture group)`).ReplaceFunc(myByteArray, func(data func(int) []byte) []byte {
data(0) // get the string
data(1) // get the first capture group
return []byte("")
// if the last option is true, returning nil will stop the loop early
return nil
}, true /* optional: if true, will not process a return output */)
// run a replace function
regex.Compile(`re (capture)`).ReplaceString(myByteArray, []byte("test $1"))
// run a simple light replace function
regex.Compile(`re`).ReplaceStringLiteral(myByteArray, []byte("all capture groups ignored (ie: $1)"))
// return a bool if a regex matches a byte array
regex.Compile(`re`).Match(myByteArray)
// split a byte array in a similar way to JavaScript
regex.Compile(`re|(keep this and split like in JavaScript)`).Split(myByteArray)
// a regex string is modified before compiling, to add a few other features
`use \' in place of ` + "`" + ` to make things easier`
`(?#This is a comment in regex)`
// an alias of pcre.Regexp
regex.PCRE
// an alias of *regexp.Regexp
regex.RE2
// direct access to compiled pcre.Regexp
regex.Compile("re").RE
// another helpful function
// this method makes it easier to return results to a regex function
regex.JoinBytes("string", []byte("byte array"), 10, 'c', data(2))
// the above method can be used in place of this one
append(append(append(append([]byte("string"), []byte("byte array")...), []byte(strconv.Itoa(10))...), 'c'), data(2)...)