hugo/tpl/fmt/fmt.go

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// Copyright 2017 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package fmt provides template functions for formatting strings.
package fmt
import (
_fmt "fmt"
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"github.com/gohugoio/hugo/common/loggers"
"github.com/gohugoio/hugo/deps"
"github.com/gohugoio/hugo/helpers"
)
// New returns a new instance of the fmt-namespaced template functions.
func New(d *deps.Deps) *Namespace {
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ignorableLogger, ok := d.Log.(loggers.IgnorableLogger)
if !ok {
ignorableLogger = loggers.NewIgnorableLogger(d.Log)
}
distinctLogger := helpers.NewDistinctLogger(d.Log)
ns := &Namespace{
distinctLogger: ignorableLogger.Apply(distinctLogger),
}
d.BuildStartListeners.Add(func() {
ns.distinctLogger.Reset()
})
return ns
}
// Namespace provides template functions for the "fmt" namespace.
type Namespace struct {
distinctLogger loggers.IgnorableLogger
}
// Print returns string representation of the passed arguments.
func (ns *Namespace) Print(a ...interface{}) string {
return _fmt.Sprint(a...)
}
// Printf returns a formatted string representation of the passed arguments.
func (ns *Namespace) Printf(format string, a ...interface{}) string {
return _fmt.Sprintf(format, a...)
}
// Println returns string representation of the passed arguments ending with a newline.
func (ns *Namespace) Println(a ...interface{}) string {
return _fmt.Sprintln(a...)
}
// Errorf formats according to a format specifier and logs an ERROR.
// It returns an empty string.
func (ns *Namespace) Errorf(format string, a ...interface{}) string {
ns.distinctLogger.Errorf(format, a...)
return ""
}
// Erroridf formats according to a format specifier and logs an ERROR and
// an information text that the error with the given ID can be suppressed in config.
// It returns an empty string.
func (ns *Namespace) Erroridf(id, format string, a ...interface{}) string {
ns.distinctLogger.Errorsf(id, format, a...)
return ""
}
// Warnf formats according to a format specifier and logs a WARNING.
// It returns an empty string.
func (ns *Namespace) Warnf(format string, a ...interface{}) string {
ns.distinctLogger.Warnf(format, a...)
return ""
}