318 lines
8.1 KiB
Go
318 lines
8.1 KiB
Go
package sprig
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import (
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"errors"
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"html/template"
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"math/rand"
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"os"
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"path"
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"path/filepath"
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"reflect"
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"strconv"
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"strings"
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ttemplate "text/template"
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"time"
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)
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// FuncMap produces the function map.
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//
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// Use this to pass the functions into the template engine:
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//
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// tpl := template.New("foo").Funcs(sprig.FuncMap()))
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//
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func FuncMap() template.FuncMap {
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return HtmlFuncMap()
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}
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// HermeticTxtFuncMap returns a 'text/template'.FuncMap with only repeatable functions.
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func HermeticTxtFuncMap() ttemplate.FuncMap {
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r := TxtFuncMap()
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for _, name := range nonhermeticFunctions {
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delete(r, name)
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}
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return r
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}
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// HermeticHtmlFuncMap returns an 'html/template'.Funcmap with only repeatable functions.
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func HermeticHtmlFuncMap() template.FuncMap {
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r := HtmlFuncMap()
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for _, name := range nonhermeticFunctions {
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delete(r, name)
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}
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return r
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}
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// TxtFuncMap returns a 'text/template'.FuncMap
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func TxtFuncMap() ttemplate.FuncMap {
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return ttemplate.FuncMap(GenericFuncMap())
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}
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// HtmlFuncMap returns an 'html/template'.Funcmap
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func HtmlFuncMap() template.FuncMap {
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return template.FuncMap(GenericFuncMap())
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}
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// GenericFuncMap returns a copy of the basic function map as a map[string]interface{}.
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func GenericFuncMap() map[string]interface{} {
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gfm := make(map[string]interface{}, len(genericMap))
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for k, v := range genericMap {
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gfm[k] = v
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}
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return gfm
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}
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// These functions are not guaranteed to evaluate to the same result for given input, because they
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// refer to the environment or global state.
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var nonhermeticFunctions = []string{
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// Date functions
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"date",
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"date_in_zone",
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"date_modify",
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"now",
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"htmlDate",
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"htmlDateInZone",
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"dateInZone",
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"dateModify",
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// Strings
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"randAlphaNum",
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"randAlpha",
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"randAscii",
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"randNumeric",
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"randBytes",
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"uuidv4",
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// OS
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"env",
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"expandenv",
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// Network
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"getHostByName",
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}
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var genericMap = map[string]interface{}{
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"hello": func() string { return "Hello!" },
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// Date functions
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"ago": dateAgo,
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"date": date,
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"date_in_zone": dateInZone,
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"date_modify": dateModify,
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"dateInZone": dateInZone,
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"dateModify": dateModify,
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"duration": duration,
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"durationRound": durationRound,
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"htmlDate": htmlDate,
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"htmlDateInZone": htmlDateInZone,
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"must_date_modify": mustDateModify,
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"mustDateModify": mustDateModify,
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"mustToDate": mustToDate,
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"now": time.Now,
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"toDate": toDate,
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"unixEpoch": unixEpoch,
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// Strings
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"trunc": trunc,
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"trim": strings.TrimSpace,
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"upper": strings.ToUpper,
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"lower": strings.ToLower,
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"title": strings.Title,
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"substr": substring,
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// Switch order so that "foo" | repeat 5
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"repeat": func(count int, str string) string { return strings.Repeat(str, count) },
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// Deprecated: Use trimAll.
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"trimall": func(a, b string) string { return strings.Trim(b, a) },
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// Switch order so that "$foo" | trimall "$"
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"trimAll": func(a, b string) string { return strings.Trim(b, a) },
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"trimSuffix": func(a, b string) string { return strings.TrimSuffix(b, a) },
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"trimPrefix": func(a, b string) string { return strings.TrimPrefix(b, a) },
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// Switch order so that "foobar" | contains "foo"
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"contains": func(substr string, str string) bool { return strings.Contains(str, substr) },
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"hasPrefix": func(substr string, str string) bool { return strings.HasPrefix(str, substr) },
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"hasSuffix": func(substr string, str string) bool { return strings.HasSuffix(str, substr) },
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"quote": quote,
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"squote": squote,
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"cat": cat,
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"indent": indent,
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"nindent": nindent,
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"replace": replace,
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"plural": plural,
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"sha1sum": sha1sum,
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"sha256sum": sha256sum,
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"adler32sum": adler32sum,
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"toString": strval,
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// Wrap Atoi to stop errors.
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"atoi": func(a string) int { i, _ := strconv.Atoi(a); return i },
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"int64": toInt64,
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"int": toInt,
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"float64": toFloat64,
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"seq": seq,
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"toDecimal": toDecimal,
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//"gt": func(a, b int) bool {return a > b},
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//"gte": func(a, b int) bool {return a >= b},
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//"lt": func(a, b int) bool {return a < b},
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//"lte": func(a, b int) bool {return a <= b},
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// split "/" foo/bar returns map[int]string{0: foo, 1: bar}
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"split": split,
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"splitList": func(sep, orig string) []string { return strings.Split(orig, sep) },
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// splitn "/" foo/bar/fuu returns map[int]string{0: foo, 1: bar/fuu}
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"splitn": splitn,
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"toStrings": strslice,
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"until": until,
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"untilStep": untilStep,
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// VERY basic arithmetic.
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"add1": func(i interface{}) int64 { return toInt64(i) + 1 },
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"add": func(i ...interface{}) int64 {
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var a int64 = 0
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for _, b := range i {
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a += toInt64(b)
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}
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return a
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},
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"sub": func(a, b interface{}) int64 { return toInt64(a) - toInt64(b) },
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"div": func(a, b interface{}) int64 { return toInt64(a) / toInt64(b) },
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"mod": func(a, b interface{}) int64 { return toInt64(a) % toInt64(b) },
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"mul": func(a interface{}, v ...interface{}) int64 {
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val := toInt64(a)
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for _, b := range v {
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val = val * toInt64(b)
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}
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return val
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},
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"randInt": func(min, max int) int { return rand.Intn(max-min) + min },
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"biggest": max,
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"max": max,
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"min": min,
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"maxf": maxf,
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"minf": minf,
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"ceil": ceil,
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"floor": floor,
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"round": round,
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// string slices. Note that we reverse the order b/c that's better
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// for template processing.
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"join": join,
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"sortAlpha": sortAlpha,
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// Defaults
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"default": dfault,
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"empty": empty,
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"coalesce": coalesce,
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"all": all,
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"any": any,
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"compact": compact,
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"mustCompact": mustCompact,
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"fromJson": fromJson,
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"toJson": toJson,
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"toPrettyJson": toPrettyJson,
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"toRawJson": toRawJson,
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"mustFromJson": mustFromJson,
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"mustToJson": mustToJson,
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"mustToPrettyJson": mustToPrettyJson,
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"mustToRawJson": mustToRawJson,
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"ternary": ternary,
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// Reflection
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"typeOf": typeOf,
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"typeIs": typeIs,
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"typeIsLike": typeIsLike,
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"kindOf": kindOf,
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"kindIs": kindIs,
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"deepEqual": reflect.DeepEqual,
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// OS:
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"env": os.Getenv,
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"expandenv": os.ExpandEnv,
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// Network:
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"getHostByName": getHostByName,
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// Paths:
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"base": path.Base,
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"dir": path.Dir,
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"clean": path.Clean,
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"ext": path.Ext,
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"isAbs": path.IsAbs,
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// Filepaths:
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"osBase": filepath.Base,
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"osClean": filepath.Clean,
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"osDir": filepath.Dir,
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"osExt": filepath.Ext,
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"osIsAbs": filepath.IsAbs,
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// Encoding:
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"b64enc": base64encode,
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"b64dec": base64decode,
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"b32enc": base32encode,
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"b32dec": base32decode,
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// Data Structures:
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"tuple": list, // FIXME: with the addition of append/prepend these are no longer immutable.
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"list": list,
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"dict": dict,
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"get": get,
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"set": set,
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"unset": unset,
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"hasKey": hasKey,
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"pluck": pluck,
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"keys": keys,
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"pick": pick,
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"omit": omit,
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"values": values,
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"append": push, "push": push,
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"mustAppend": mustPush, "mustPush": mustPush,
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"prepend": prepend,
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"mustPrepend": mustPrepend,
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"first": first,
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"mustFirst": mustFirst,
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"rest": rest,
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"mustRest": mustRest,
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"last": last,
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"mustLast": mustLast,
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"initial": initial,
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"mustInitial": mustInitial,
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"reverse": reverse,
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"mustReverse": mustReverse,
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"uniq": uniq,
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"mustUniq": mustUniq,
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"without": without,
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"mustWithout": mustWithout,
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"has": has,
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"mustHas": mustHas,
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"slice": slice,
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"mustSlice": mustSlice,
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"concat": concat,
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"dig": dig,
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"chunk": chunk,
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"mustChunk": mustChunk,
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// Flow Control:
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"fail": func(msg string) (string, error) { return "", errors.New(msg) },
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// Regex
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"regexMatch": regexMatch,
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"mustRegexMatch": mustRegexMatch,
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"regexFindAll": regexFindAll,
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"mustRegexFindAll": mustRegexFindAll,
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"regexFind": regexFind,
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"mustRegexFind": mustRegexFind,
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"regexReplaceAll": regexReplaceAll,
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"mustRegexReplaceAll": mustRegexReplaceAll,
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"regexReplaceAllLiteral": regexReplaceAllLiteral,
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"mustRegexReplaceAllLiteral": mustRegexReplaceAllLiteral,
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"regexSplit": regexSplit,
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"mustRegexSplit": mustRegexSplit,
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"regexQuoteMeta": regexQuoteMeta,
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// URLs:
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"urlParse": urlParse,
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"urlJoin": urlJoin,
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}
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