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package funcs
import (
"context"
"fmt"
"reflect"
"github.com/hairyhenderson/gomplate/v4/conv"
"github.com/hairyhenderson/gomplate/v4/internal/deprecated"
"github.com/hairyhenderson/gomplate/v4/internal/texttemplate"
"github.com/hairyhenderson/gomplate/v4/coll"
)
// CollNS -
//
// Deprecated: don't use
func CollNS() *CollFuncs {
return &CollFuncs{}
}
// AddCollFuncs -
//
// Deprecated: use CreateCollFuncs instead
func AddCollFuncs(f map[string]interface{}) {
for k, v := range CreateCollFuncs(context.Background()) {
f[k] = v
}
}
// CreateCollFuncs -
func CreateCollFuncs(ctx context.Context) map[string]interface{} {
f := map[string]interface{}{}
ns := &CollFuncs{ctx}
f["coll"] = func() interface{} { return ns }
f["has"] = ns.Has
f["slice"] = ns.deprecatedSlice
f["dict"] = ns.Dict
f["keys"] = ns.Keys
f["values"] = ns.Values
f["append"] = ns.Append
f["prepend"] = ns.Prepend
f["uniq"] = ns.Uniq
f["reverse"] = ns.Reverse
f["merge"] = ns.Merge
f["sort"] = ns.Sort
f["jsonpath"] = ns.JSONPath
f["jq"] = ns.JQ
f["flatten"] = ns.Flatten
return f
}
// CollFuncs -
type CollFuncs struct {
ctx context.Context
}
// Slice -
func (CollFuncs) Slice(args ...interface{}) []interface{} {
return coll.Slice(args...)
}
// deprecatedSlice -
// Deprecated: use coll.Slice instead
func (f *CollFuncs) deprecatedSlice(args ...interface{}) []interface{} {
deprecated.WarnDeprecated(f.ctx, "the 'slice' alias for coll.Slice is deprecated - use coll.Slice instead")
return coll.Slice(args...)
}
// GoSlice - same as text/template's 'slice' function
func (CollFuncs) GoSlice(item reflect.Value, indexes ...reflect.Value) (reflect.Value, error) {
return texttemplate.GoSlice(item, indexes...)
}
// Has -
func (CollFuncs) Has(in interface{}, key string) bool {
return coll.Has(in, key)
}
// Index returns the result of indexing the last argument with the preceding
// index keys. This is similar to the `index` built-in template function, but
// the arguments are ordered differently for pipeline compatibility. Also, this
// function is more strict, and will return an error when the value doesn't
// contain the given key.
func (CollFuncs) Index(args ...interface{}) (interface{}, error) {
if len(args) < 2 {
return nil, fmt.Errorf("wrong number of args: wanted at least 2, got %d", len(args))
}
item := args[len(args)-1]
indexes := args[:len(args)-1]
return coll.Index(item, indexes...)
}
// Dict -
func (CollFuncs) Dict(in ...interface{}) (map[string]interface{}, error) {
return coll.Dict(in...)
}
// Keys -
func (CollFuncs) Keys(in ...map[string]interface{}) ([]string, error) {
return coll.Keys(in...)
}
// Values -
func (CollFuncs) Values(in ...map[string]interface{}) ([]interface{}, error) {
return coll.Values(in...)
}
// Append -
func (CollFuncs) Append(v interface{}, list interface{}) ([]interface{}, error) {
return coll.Append(v, list)
}
// Prepend -
func (CollFuncs) Prepend(v interface{}, list interface{}) ([]interface{}, error) {
return coll.Prepend(v, list)
}
// Uniq -
func (CollFuncs) Uniq(in interface{}) ([]interface{}, error) {
return coll.Uniq(in)
}
// Reverse -
func (CollFuncs) Reverse(in interface{}) ([]interface{}, error) {
return coll.Reverse(in)
}
// Merge -
func (CollFuncs) Merge(dst map[string]interface{}, src ...map[string]interface{}) (map[string]interface{}, error) {
return coll.Merge(dst, src...)
}
// Sort -
func (CollFuncs) Sort(args ...interface{}) ([]interface{}, error) {
var (
key string
list interface{}
)
if len(args) == 0 || len(args) > 2 {
return nil, fmt.Errorf("wrong number of args: wanted 1 or 2, got %d", len(args))
}
if len(args) == 1 {
list = args[0]
}
if len(args) == 2 {
key = conv.ToString(args[0])
list = args[1]
}
return coll.Sort(key, list)
}
// JSONPath -
func (CollFuncs) JSONPath(p string, in interface{}) (interface{}, error) {
return coll.JSONPath(p, in)
}
// JQ -
func (f *CollFuncs) JQ(jqExpr string, in interface{}) (interface{}, error) {
return coll.JQ(f.ctx, jqExpr, in)
}
// Flatten -
func (CollFuncs) Flatten(args ...interface{}) ([]interface{}, error) {
if len(args) == 0 || len(args) > 2 {
return nil, fmt.Errorf("wrong number of args: wanted 1 or 2, got %d", len(args))
}
list := args[0]
depth := -1
if len(args) == 2 {
depth = conv.ToInt(args[0])
list = args[1]
}
return coll.Flatten(list, depth)
}
func pickOmitArgs(args ...interface{}) (map[string]interface{}, []string, error) {
if len(args) <= 1 {
return nil, nil, fmt.Errorf("wrong number of args: wanted 2 or more, got %d", len(args))
}
m, ok := args[len(args)-1].(map[string]interface{})
if !ok {
return nil, nil, fmt.Errorf("wrong map type: must be map[string]interface{}, got %T", args[len(args)-1])
}
keys := make([]string, len(args)-1)
for i, v := range args[0 : len(args)-1] {
k, ok := v.(string)
if !ok {
return nil, nil, fmt.Errorf("wrong key type: must be string, got %T (%+v)", args[i], args[i])
}
keys[i] = k
}
return m, keys, nil
}
// Pick -
func (CollFuncs) Pick(args ...interface{}) (map[string]interface{}, error) {
m, keys, err := pickOmitArgs(args...)
if err != nil {
return nil, err
}
return coll.Pick(m, keys...), nil
}
// Omit -
func (CollFuncs) Omit(args ...interface{}) (map[string]interface{}, error) {
m, keys, err := pickOmitArgs(args...)
if err != nil {
return nil, err
}
return coll.Omit(m, keys...), nil
}
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