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authorOndrej Fabry <ofabry@cisco.com>2020-06-18 08:22:13 +0200
committerOndrej Fabry <ofabry@cisco.com>2020-06-22 14:37:14 +0200
commit94620e85f0bdbb054af07ce3670fadc1f76cfdf0 (patch)
tree7784ddf381c4e08a6a1ece5b55911b47ea8395f3 /binapigen/vppapi/parser.go
parent280b1c6c83b676ef4e592f4ecf60cb5b54b6a753 (diff)
Refactored binapi generator with message encoding
Change-Id: I5a6abb68b9d058866f94818169300e5c2fc43895 Signed-off-by: Ondrej Fabry <ofabry@cisco.com>
Diffstat (limited to 'binapigen/vppapi/parser.go')
-rw-r--r--binapigen/vppapi/parser.go111
1 files changed, 111 insertions, 0 deletions
diff --git a/binapigen/vppapi/parser.go b/binapigen/vppapi/parser.go
new file mode 100644
index 0000000..312dd0e
--- /dev/null
+++ b/binapigen/vppapi/parser.go
@@ -0,0 +1,111 @@
+// Copyright (c) 2020 Cisco and/or its affiliates.
+//
+// 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 vppapi
+
+import (
+ "fmt"
+ "io/ioutil"
+ "path/filepath"
+ "strings"
+
+ "github.com/sirupsen/logrus"
+)
+
+const (
+ DefaultAPIDir = "/usr/share/vpp/api"
+)
+
+const apifileSuffixJson = ".api.json"
+
+// FindFiles returns all input files located in specified directory
+func FindFiles(dir string, deep int) (paths []string, err error) {
+ entries, err := ioutil.ReadDir(dir)
+ if err != nil {
+ return nil, fmt.Errorf("reading directory %s failed: %v", dir, err)
+ }
+ for _, e := range entries {
+ if e.IsDir() && deep > 0 {
+ nestedDir := filepath.Join(dir, e.Name())
+ if nested, err := FindFiles(nestedDir, deep-1); err != nil {
+ return nil, err
+ } else {
+ paths = append(paths, nested...)
+ }
+ } else if strings.HasSuffix(e.Name(), apifileSuffixJson) {
+ paths = append(paths, filepath.Join(dir, e.Name()))
+ }
+ }
+ return paths, nil
+}
+
+func Parse() ([]*File, error) {
+ return ParseDir(DefaultAPIDir)
+}
+
+func ParseDir(apidir string) ([]*File, error) {
+ files, err := FindFiles(apidir, 1)
+ if err != nil {
+ return nil, err
+ }
+
+ logrus.Infof("found %d files in API dir %q", len(files), apidir)
+
+ var modules []*File
+
+ for _, file := range files {
+ module, err := ParseFile(file)
+ if err != nil {
+ return nil, err
+ }
+ modules = append(modules, module)
+ }
+
+ return modules, nil
+}
+
+// ParseFile parses API file contents and returns File.
+func ParseFile(apifile string) (*File, error) {
+ if !strings.HasSuffix(apifile, apifileSuffixJson) {
+ return nil, fmt.Errorf("unsupported file format: %q", apifile)
+ }
+
+ data, err := ioutil.ReadFile(apifile)
+ if err != nil {
+ return nil, fmt.Errorf("reading file %s failed: %v", apifile, err)
+ }
+
+ base := filepath.Base(apifile)
+ name := base[:strings.Index(base, ".")]
+
+ logf("parsing file %q", base)
+
+ module, err := ParseRaw(data)
+ if err != nil {
+ return nil, fmt.Errorf("parsing file %s failed: %v", base, err)
+ }
+ module.Name = name
+ module.Path = apifile
+
+ return module, nil
+}
+
+func ParseRaw(data []byte) (file *File, err error) {
+ file, err = parseJSON(data)
+ if err != nil {
+ return nil, err
+ }
+
+ return file, nil
+}