github.com/maruel/nin@v0.0.0-20220112143044-f35891e3ce7e/debug_flags.go (about)

     1  // Copyright 2012 Google Inc. All Rights Reserved.
     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 nin
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  )
    21  
    22  // Debug contains debug functionality.
    23  var Debug struct {
    24  	// Explaining enables debug print of reason while a command is run.
    25  	Explaining bool
    26  	// KeepDepfile enables keeping gcc-style dependency files.
    27  	KeepDepfile bool
    28  	// KeepRsp enables keeping response file after commands.
    29  	KeepRsp bool
    30  }
    31  
    32  func explain(f string, i ...interface{}) {
    33  	if Debug.Explaining {
    34  		fmt.Fprintf(os.Stderr, "ninja explain: "+f+"\n", i...)
    35  	}
    36  }