1 files changed, 224 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/config/loader.go b/vendor/github.com/hashicorp/terraform/config/loader.go
new file mode 100644
index 00000000..0bfa89c2
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/config/loader.go
@@ -0,0 +1,224 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"github.com/hashicorp/hcl"
+)
+
+// ErrNoConfigsFound is the error returned by LoadDir if no
+// Terraform configuration files were found in the given directory.
+type ErrNoConfigsFound struct {
+	Dir string
+}
+
+func (e ErrNoConfigsFound) Error() string {
+	return fmt.Sprintf(
+		"No Terraform configuration files found in directory: %s",
+		e.Dir)
+}
+
+// LoadJSON loads a single Terraform configuration from a given JSON document.
+//
+// The document must be a complete Terraform configuration. This function will
+// NOT try to load any additional modules so only the given document is loaded.
+func LoadJSON(raw json.RawMessage) (*Config, error) {
+	obj, err := hcl.Parse(string(raw))
+	if err != nil {
+		return nil, fmt.Errorf(
+			"Error parsing JSON document as HCL: %s", err)
+	}
+
+	// Start building the result
+	hclConfig := &hclConfigurable{
+		Root: obj,
+	}
+
+	return hclConfig.Config()
+}
+
+// LoadFile loads the Terraform configuration from a given file.
+//
+// This file can be any format that Terraform recognizes, and import any
+// other format that Terraform recognizes.
+func LoadFile(path string) (*Config, error) {
+	importTree, err := loadTree(path)
+	if err != nil {
+		return nil, err
+	}
+
+	configTree, err := importTree.ConfigTree()
+
+	// Close the importTree now so that we can clear resources as quickly
+	// as possible.
+	importTree.Close()
+
+	if err != nil {
+		return nil, err
+	}
+
+	return configTree.Flatten()
+}
+
+// LoadDir loads all the Terraform configuration files in a single
+// directory and appends them together.
+//
+// Special files known as "override files" can also be present, which
+// are merged into the loaded configuration. That is, the non-override
+// files are loaded first to create the configuration. Then, the overrides
+// are merged into the configuration to create the final configuration.
+//
+// Files are loaded in lexical order.
+func LoadDir(root string) (*Config, error) {
+	files, overrides, err := dirFiles(root)
+	if err != nil {
+		return nil, err
+	}
+	if len(files) == 0 {
+		return nil, &ErrNoConfigsFound{Dir: root}
+	}
+
+	// Determine the absolute path to the directory.
+	rootAbs, err := filepath.Abs(root)
+	if err != nil {
+		return nil, err
+	}
+
+	var result *Config
+
+	// Sort the files and overrides so we have a deterministic order
+	sort.Strings(files)
+	sort.Strings(overrides)
+
+	// Load all the regular files, append them to each other.
+	for _, f := range files {
+		c, err := LoadFile(f)
+		if err != nil {
+			return nil, err
+		}
+
+		if result != nil {
+			result, err = Append(result, c)
+			if err != nil {
+				return nil, err
+			}
+		} else {
+			result = c
+		}
+	}
+
+	// Load all the overrides, and merge them into the config
+	for _, f := range overrides {
+		c, err := LoadFile(f)
+		if err != nil {
+			return nil, err
+		}
+
+		result, err = Merge(result, c)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Mark the directory
+	result.Dir = rootAbs
+
+	return result, nil
+}
+
+// IsEmptyDir returns true if the directory given has no Terraform
+// configuration files.
+func IsEmptyDir(root string) (bool, error) {
+	if _, err := os.Stat(root); err != nil && os.IsNotExist(err) {
+		return true, nil
+	}
+
+	fs, os, err := dirFiles(root)
+	if err != nil {
+		return false, err
+	}
+
+	return len(fs) == 0 && len(os) == 0, nil
+}
+
+// Ext returns the Terraform configuration extension of the given
+// path, or a blank string if it is an invalid function.
+func ext(path string) string {
+	if strings.HasSuffix(path, ".tf") {
+		return ".tf"
+	} else if strings.HasSuffix(path, ".tf.json") {
+		return ".tf.json"
+	} else {
+		return ""
+	}
+}
+
+func dirFiles(dir string) ([]string, []string, error) {
+	f, err := os.Open(dir)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer f.Close()
+
+	fi, err := f.Stat()
+	if err != nil {
+		return nil, nil, err
+	}
+	if !fi.IsDir() {
+		return nil, nil, fmt.Errorf(
+			"configuration path must be a directory: %s",
+			dir)
+	}
+
+	var files, overrides []string
+	err = nil
+	for err != io.EOF {
+		var fis []os.FileInfo
+		fis, err = f.Readdir(128)
+		if err != nil && err != io.EOF {
+			return nil, nil, err
+		}
+
+		for _, fi := range fis {
+			// Ignore directories
+			if fi.IsDir() {
+				continue
+			}
+
+			// Only care about files that are valid to load
+			name := fi.Name()
+			extValue := ext(name)
+			if extValue == "" || isIgnoredFile(name) {
+				continue
+			}
+
+			// Determine if we're dealing with an override
+			nameNoExt := name[:len(name)-len(extValue)]
+			override := nameNoExt == "override" ||
+				strings.HasSuffix(nameNoExt, "_override")
+
+			path := filepath.Join(dir, name)
+			if override {
+				overrides = append(overrides, path)
+			} else {
+				files = append(files, path)
+			}
+		}
+	}
+
+	return files, overrides, nil
+}
+
+// isIgnoredFile returns true or false depending on whether the
+// provided file name is a file that should be ignored.
+func isIgnoredFile(name string) bool {
+	return strings.HasPrefix(name, ".") || // Unix-like hidden files
+		strings.HasSuffix(name, "~") || // vim
+		strings.HasPrefix(name, "#") && strings.HasSuffix(name, "#") // emacs
+}