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https://github.com/cgrates/cgrates.git
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101 lines
3.3 KiB
Go
101 lines
3.3 KiB
Go
/*
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Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
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Copyright (C) ITsysCOM GmbH
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>
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*/
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package utils
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import (
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"strings"
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)
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// GetFullFieldPath returns the full path for the
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func GetFullFieldPath(fldPath string, dP DataProvider) (fpath *FullPath, err error) {
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var newPath string
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if newPath, err = ProcessFieldPath(fldPath, InfieldSep, dP); err != nil || newPath == EmptyString {
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return
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}
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return NewFullPath(newPath), nil
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}
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// replaces the dynamic path between <> seperated by sep
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func ProcessFieldPath(fldPath, sep string, dP DataProvider) (newPath string, err error) {
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startIdx := strings.IndexByte(fldPath, RSRDynStartChar)
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if startIdx == -1 {
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return // no proccessing requred
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}
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endIdx := strings.IndexByte(fldPath, RSRDynEndChar)
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if endIdx == -1 {
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err = ErrWrongPath
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newPath = EmptyString
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return
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}
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newPath = fldPath[:startIdx]
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for _, path := range strings.Split(fldPath[startIdx+1:endIdx], sep) { // proccess the found path
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var val string
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if strings.HasPrefix(path, MetaNow) || strings.HasPrefix(path, MetaTenant) {
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if val, err = dP.FieldAsString(SplitPath(path, NestingSep[0], -1)); err != nil {
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newPath = EmptyString
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return
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}
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} else {
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if val, err = DPDynamicString(path, dP); err != nil {
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newPath = EmptyString
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return
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}
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}
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newPath += val
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}
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newPath += fldPath[endIdx+1:]
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return
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}
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// ParseParamForDataProvider will parse a param string with prefix "~*req.", "~*otps.", "*tenant" or "*now"; or strings containing dynamic paths between "<" ">" signs. If none match, it returns the original string
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func ParseParamForDataProvider(param string, dP DataProvider, onlyEncapsulatead bool) (string, error) {
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// Check if the string contains any "&" characters
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if strings.Contains(param, ANDSep) {
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parts := strings.Split(param, ANDSep)
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var results []string
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// Process each part individually
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for _, part := range parts {
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result, err := ParseParamForDataProvider(part, dP, onlyEncapsulatead)
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if err != nil {
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return EmptyString, err
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}
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results = append(results, result)
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}
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// Join all processed parts with &
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return strings.Join(results, ANDSep), nil
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}
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if !onlyEncapsulatead {
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switch {
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case strings.HasPrefix(param, MetaDynReq) || strings.HasPrefix(param, DynamicDataPrefix+MetaOpts):
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return DPDynamicString(param, dP)
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case strings.HasPrefix(param, MetaNow) || strings.HasPrefix(param, MetaTenant):
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return dP.FieldAsString(SplitPath(param, NestingSep[0], -1))
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}
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}
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// look for dynamic paths in the param string, and parse it
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if newParam, err := ProcessFieldPath(param, PlusChar, dP); err != nil {
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return EmptyString, err
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} else if newParam != EmptyString {
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return newParam, nil
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}
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return param, nil
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}
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