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package config
import (
"errors"
"fmt"
"io"
"os"
"path"
"strconv"
"git.gabrielgio.me/cerrado/pkg/u"
"git.sr.ht/~emersion/go-scfg"
)
var (
ScanPathErr = errors.New("Scan path does not exist")
RepoPathErr = errors.New("Repository path does not exist")
)
type (
// scan represents piece of the scan from the configuration file.
scan struct {
Path string
Public bool
}
// configuration represents file configuration.
configuration struct {
Scan *scan
RootReadme string
}
// This is a per repository configuration.
GitRepositoryConfiguration struct {
Name string
Path string
Public bool
}
// ConfigurationRepository represents the configuration repository (as in
// database repositories).
// This holds all the function necessary to ask for configuration
// information.
ConfigurationRepository struct {
rootReadme string
repositories []*GitRepositoryConfiguration
}
)
func LoadConfigurationRepository(configPath string) (*ConfigurationRepository, error) {
f, err := os.Open(configPath)
if err != nil {
return nil, err
}
config, err := parse(f)
if err != nil {
return nil, err
}
repo := &ConfigurationRepository{
rootReadme: config.RootReadme,
}
err = repo.expandOnScanPath(config.Scan.Path, config.Scan.Public)
if err != nil {
return nil, err
}
return repo, nil
}
// GetRootReadme returns root read path
func (c *ConfigurationRepository) GetRootReadme() string {
return c.rootReadme
}
// GetByName returns configuration of repository for a given name.
// It returns nil if there is not match for it.
func (c *ConfigurationRepository) GetByName(name string) *GitRepositoryConfiguration {
for _, r := range c.repositories {
if r.Name == name {
return r
}
}
return nil
}
// List returns all the configuration for all repositories.
func (c *ConfigurationRepository) List() []*GitRepositoryConfiguration {
return c.repositories
}
// expandOnScanPath scans the scanPath for folders taking them as repositories
// and applying them default configuration.
func (c *ConfigurationRepository) expandOnScanPath(scanPath string, public bool) error {
if !u.FileExist(scanPath) {
return ScanPathErr
}
entries, err := os.ReadDir(scanPath)
if err != nil {
return err
}
c.repositories = make([]*GitRepositoryConfiguration, 0)
for _, e := range entries {
if !e.IsDir() {
continue
}
fullPath := path.Join(scanPath, e.Name())
c.repositories = append(c.repositories, &GitRepositoryConfiguration{
Name: e.Name(),
Path: fullPath,
Public: public,
})
}
return nil
}
func parse(r io.Reader) (*configuration, error) {
block, err := scfg.Read(r)
if err != nil {
return nil, err
}
config := defaultConfiguration()
err = setScan(block, config.Scan)
if err != nil {
return nil, err
}
err = setRootReadme(block, &config.RootReadme)
if err != nil {
return nil, err
}
return config, nil
}
func defaultConfiguration() *configuration {
return &configuration{
Scan: &scan{
Public: true,
Path: "",
},
RootReadme: "",
}
}
func setRootReadme(block scfg.Block, readme *string) error {
scanDir := block.Get("root-readme")
return setString(scanDir, readme)
}
func setScan(block scfg.Block, scan *scan) error {
scanDir := block.Get("scan")
err := setString(scanDir, &scan.Path)
if err != nil {
return err
}
public := scanDir.Children.Get("public")
return setBool(public, &scan.Public)
}
func setBool(dir *scfg.Directive, field *bool) error {
if dir != nil {
p1, _ := u.First(dir.Params)
v, err := strconv.ParseBool(p1)
if err != nil {
return fmt.Errorf("Error parsing bool param of %s: %w", dir.Name, err)
}
*field = v
}
return nil
}
func setString(dir *scfg.Directive, field *string) error {
if dir != nil {
*field, _ = u.First(dir.Params)
}
return nil
}
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