// Copyright 2015 Google Inc. All rights reserved
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kati
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import (
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"os"
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"path/filepath"
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)
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func exists(filename string) bool {
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_, err := os.Stat(filename)
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if os.IsNotExist(err) {
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return false
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}
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return true
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}
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type vpath struct {
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pattern string
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dirs []string
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}
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type searchPaths struct {
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vpaths []vpath // vpath directives
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dirs []string // VPATH variable
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}
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func (s searchPaths) exists(target string) (string, bool) {
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if exists(target) {
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return target, true
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}
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for _, vpath := range s.vpaths {
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if !matchPattern(vpath.pattern, target) {
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continue
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}
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for _, dir := range vpath.dirs {
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vtarget := filepath.Join(dir, target)
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if exists(vtarget) {
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return vtarget, true
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}
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}
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}
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for _, dir := range s.dirs {
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vtarget := filepath.Join(dir, target)
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if exists(vtarget) {
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return vtarget, true
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}
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}
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return target, false
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}
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