diff options
author | 2020-06-18 08:22:13 +0200 | |
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committer | 2020-06-22 14:37:14 +0200 | |
commit | 94620e85f0bdbb054af07ce3670fadc1f76cfdf0 (patch) | |
tree | 7784ddf381c4e08a6a1ece5b55911b47ea8395f3 /binapigen/vppapi/parser.go | |
parent | 280b1c6c83b676ef4e592f4ecf60cb5b54b6a753 (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.go | 111 |
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 +} |