diff --git a/function/xml/descriptor.json b/function/xml/descriptor.json new file mode 100644 index 0000000..05273e3 --- /dev/null +++ b/function/xml/descriptor.json @@ -0,0 +1,33 @@ +{ + "name": "xml", + "type": "flogo:function", + "version": "0.0.1a", + "title": "xpath", + "description": "Executes an XPATH statement against an XML String and returns the results", + "functions": [{ + "name": "xpath", + "description": "Executes an XPATH query against an XML Document.", + "example": "returns XML String or Data values dependant on asXML (true for XML representation)", + "args": [ + { + "name": "xpath", + "type": "string" + }, + { + "name": "xml", + "type": "string" + }, + { + "name": "asXML", + "type": "boolean" + }], + "return": { + "name": "result", + "type": "string" + }, + "display": { + "visible": true + } + } + ] +} \ No newline at end of file diff --git a/function/xml/go.mod b/function/xml/go.mod new file mode 100644 index 0000000..6daa3fd --- /dev/null +++ b/function/xml/go.mod @@ -0,0 +1,26 @@ +module github.com/davewins/FlogoWorkspace/functions/xml + +go 1.23.2 + +require ( + github.com/antchfx/xpath v1.3.2 // indirect + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/pmezard/go-difflib v1.0.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) + +require ( + github.com/antchfx/xmlquery v1.4.2 + github.com/araddon/dateparse v0.0.0-20190622164848-0fb0a474d195 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + go.uber.org/atomic v1.6.0 // indirect + go.uber.org/multierr v1.5.0 // indirect + go.uber.org/zap v1.16.0 // indirect + golang.org/x/net v0.7.0 // indirect + golang.org/x/text v0.7.0 // indirect +) + +require ( + github.com/project-flogo/core v1.6.11 + github.com/stretchr/testify v1.9.0 +) diff --git a/function/xml/go.sum b/function/xml/go.sum new file mode 100644 index 0000000..0166031 --- /dev/null +++ b/function/xml/go.sum @@ -0,0 +1,94 @@ +github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/antchfx/xmlquery v1.4.2 h1:MZKd9+wblwxfQ1zd1AdrTsqVaMjMCwow3IqkCSe00KA= +github.com/antchfx/xmlquery v1.4.2/go.mod h1:QXhvf5ldTuGqhd1SHNvvtlhhdQLks4dD0awIVhXIDTA= +github.com/antchfx/xpath v1.3.2 h1:LNjzlsSjinu3bQpw9hWMY9ocB80oLOWuQqFvO6xt51U= +github.com/antchfx/xpath v1.3.2/go.mod h1:i54GszH55fYfBmoZXapTHN8T8tkcHfRgLyVwwqzXNcs= +github.com/araddon/dateparse v0.0.0-20190622164848-0fb0a474d195 h1:c4mLfegoDw6OhSJXTd2jUEQgZUQuJWtocudb97Qn9EM= +github.com/araddon/dateparse v0.0.0-20190622164848-0fb0a474d195/go.mod h1:SLqhdZcd+dF3TEVL2RMoob5bBP5R1P1qkox+HtCBgGI= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 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v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/project-flogo/core v1.6.11 h1:weM2YJOx+kCtbGasw5wdcNHoBCHATRXcRNmIyUD8rSw= +github.com/project-flogo/core v1.6.11/go.mod h1:gKJsSjm/+uczBquIBEvdR4bXn8S2az2kW6uvKvDLxUE= +github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= +github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= +github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= +github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= +go.uber.org/atomic v1.6.0 h1:Ezj3JGmsOnG1MoRWQkPBsKLe9DwWD9QeXzTRzzldNVk= +go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ= +go.uber.org/multierr v1.5.0 h1:KCa4XfM8CWFCpxXRGok+Q0SS/0XBhMDbHHGABQLvD2A= +go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU= +go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee h1:0mgffUl7nfd+FpvXMVz4IDEaUSmT1ysygQC7qYo7sG4= +go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA= +go.uber.org/zap v1.16.0 h1:uFRZXykJGK9lLY4HtgSw44DnIcAM+kRBP7x5m+NpAOM= +go.uber.org/zap v1.16.0/go.mod h1:MA8QOfq0BHJwdXa996Y4dYkAqRKB8/1K1QMMZVaNZjQ= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= +golang.org/x/crypto 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mode 100644 index 0000000..4733fc7 --- /dev/null +++ b/function/xml/xpath.go @@ -0,0 +1,76 @@ +package xml + +import ( + "fmt" + "strings" + + "github.com/antchfx/xmlquery" + "github.com/project-flogo/core/data/coerce" + + "github.com/project-flogo/core/data" + "github.com/project-flogo/core/data/expression/function" +) + +type fnXPATH struct { +} + +func init() { + function.Register(&fnXPATH{}) +} + +func (s *fnXPATH) Name() string { + return "xpath" +} +func (s *fnXPATH) Sig() (paramTypes []data.Type, isVariadic bool) { + return []data.Type{data.TypeString, data.TypeString, data.TypeBool}, false +} + +func (s *fnXPATH) Eval(in ...interface{}) (interface{}, error) { + + //validate the passed first argument (should be an XPATH) is at least a string + xpath, err := coerce.ToString(in[0]) + if err != nil { + return nil, fmt.Errorf("xpath function first parameter [%+v] must be string", in[0]) + } + //validate the passed second argument (should be an XML) is at least a string + xml, err := coerce.ToString(in[1]) + if err != nil { + return nil, fmt.Errorf("xpath function second parameter [%+v] must be string", in[1]) + } + //validate the passed third argument (should be a boolean) is at least true or false + returnAsXML, err := coerce.ToBool(in[2]) + if err != nil { + return nil, fmt.Errorf("xpath function thrid parameter [%+v] must be boolean", in[2]) + } + //ok now try to check the passed XML in the first param is a valid XML structure + doc, err := xmlquery.Parse(strings.NewReader(xml)) + if err != nil { + //fmt.Println("The passed XML value does not Parse / is not valid") + panic(err) + } + //next lets specify a nodeArray which will store the result from the passed XPATH against the xml + var nodeList []*xmlquery.Node + //now query the passed xpath against the doc to generate a list of Nodes (hopefully more than 0) + nodeList, err = xmlquery.QueryAll(doc, xpath) + //check there is no error, panic otherwise + if err != nil { + //fmt.Println("The passed XML value does not Parse / is not valid") + panic(err) + } + var parsedStrings []string + if len(nodeList) == 0 { + // No matching nodes - add a blank string or handle as needed + parsedStrings = append(parsedStrings, "") + } else { + // Iterate and process found nodes + for index := range nodeList { + parsedStrings = append(parsedStrings, nodeList[index].OutputXML(returnAsXML)) + } + } + + //now we want to return all the Strings as a single return String + returnString := strings.Join(parsedStrings, "\n" ) + + return returnString, nil + //return result.InnerText(), nil +} \ No newline at end of file diff --git a/function/xml/xpath_test.go b/function/xml/xpath_test.go new file mode 100644 index 0000000..29bb694 --- /dev/null +++ b/function/xml/xpath_test.go @@ -0,0 +1,49 @@ +package xml + +import ( + "testing" + + "github.com/project-flogo/core/data/expression/function" + "github.com/stretchr/testify/assert" +) + +var ( + expectedResult = `Dave3400` + xpath = `//transactions/transaction[@id='4']` + xml = ` + + + Dave + 100 + + + Dave1 + 200 + + + Dave2 + 300 + + + Dave3 + 400 + + + Dave4 + 500 + + +` +) + +func init() { + function.ResolveAliases() +} + +func TestFnxpath_Eval(t *testing.T) { + f := &fnXPATH{} + v, err := function.Eval(f, xpath, xml, true) + + assert.Nil(t, err) + assert.Equal(t, expectedResult, v) +}