github.com/greenpau/go-authcrunch@v1.1.4/pkg/util/cfg/parser.go (about)

     1  // Copyright 2022 Paul Greenberg greenpau@outlook.com
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cfg
    16  
    17  import (
    18  	"github.com/greenpau/go-authcrunch/pkg/errors"
    19  )
    20  
    21  const (
    22  	// ReplErrStr represents error replacement string.
    23  	ReplErrStr string = "ERROR_REPLACEMENT"
    24  )
    25  
    26  // ArgRule represents a rules that applies to an arguments passed
    27  // in a config.
    28  type ArgRule struct {
    29  	Min int `json:"min,omitempty" xml:"min,omitempty" yaml:"min,omitempty"`
    30  	Max int `json:"max,omitempty" xml:"max,omitempty" yaml:"max,omitempty"`
    31  }
    32  
    33  // ValidateArg performs argument validation.
    34  func ValidateArg(rules map[string]*ArgRule, k string, v []string) error {
    35  	r, exists := rules[k]
    36  	if !exists {
    37  		return nil
    38  	}
    39  	if r.Min > len(v) {
    40  		return errors.ErrValidateArgTooFew.WithArgs(k, len(v), r.Min)
    41  	}
    42  	if r.Max < len(v) {
    43  		return errors.ErrValidateArgTooMany.WithArgs(k, len(v), r.Min)
    44  	}
    45  	return nil
    46  }
    47  
    48  // FindStrArr returns true if a string found in a slice.
    49  func FindStrArr(arr []string, s string) bool {
    50  	for _, x := range arr {
    51  		if x == s {
    52  			return true
    53  		}
    54  	}
    55  	return false
    56  }
    57  
    58  // DedupStrArr returns deduplicated string array.
    59  func DedupStrArr(arr []string) []string {
    60  	var output []string
    61  	m := make(map[string]interface{})
    62  	for _, s := range arr {
    63  		if _, exists := m[s]; exists {
    64  			continue
    65  		}
    66  		m[s] = true
    67  		output = append(output, s)
    68  	}
    69  	return output
    70  }