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// Copyright Nicolas Paul (2023)
//
// * Nicolas Paul
//
// This software is a computer program whose purpose is to allow the hosting
// and sharing of Go modules using a personal domain.
//
// This software is governed by the CeCILL license under French law and
// abiding by the rules of distribution of free software. You can use,
// modify and/ or redistribute the software under the terms of the CeCILL
// license as circulated by CEA, CNRS and INRIA at the following URL
// "http://www.cecill.info".
//
// As a counterpart to the access to the source code and rights to copy,
// modify and redistribute granted by the license, users are provided only
// with a limited warranty and the software's author, the holder of the
// economic rights, and the successive licensors have only limited
// liability.
//
// In this respect, the user's attention is drawn to the risks associated
// with loading, using, modifying and/or developing or reproducing the
// software by the user in light of its specific status of free software,
// that may mean that it is complicated to manipulate, and that also
// therefore means that it is reserved for developers and experienced
// professionals having in-depth computer knowledge. Users are therefore
// encouraged to load and test the software's suitability as regards their
// requirements in conditions enabling the security of their systems and/or
// data to be ensured and, more generally, to use and operate it in the
// same conditions as regards security.
//
// The fact that you are presently reading this means that you have had
// knowledge of the CeCILL license and that you accept its terms.
// Data structure representaton of the configuration
package main
import (
"fmt"
"os"
"path"
"strings"
"sync"
)
// Index is the global registry of Go modules.
type Index struct {
Domain string
Modules map[string]*Module
// internal
lock sync.Mutex
}
// AddModule adds a module to the index.
func (i *Index) AddModule(n string, m *Module) {
i.lock.Lock()
defer i.lock.Unlock()
i.Modules[n] = m
}
// GetModule returns a module from the index.
func (i *Index) GetModule(n string) *Module {
i.lock.Lock()
defer i.lock.Unlock()
return i.Modules[n]
}
// RemoveModule removes a module from the index.
func (i *Index) RemoveModule(n string) {
i.lock.Lock()
defer i.lock.Unlock()
delete(i.Modules, n)
}
// CheckModule checks if a module is in the index.
func (i *Index) CheckModule(n string) bool {
i.lock.Lock()
defer i.lock.Unlock()
_, ok := i.Modules[n]
return ok
}
// GenerateFile generates the index file.
func (i *Index) GenerateFile(out string) error {
i.lock.Lock()
defer i.lock.Unlock()
f := path.Join(out, "index.html")
// Create the file.
fd, err := os.Create(f)
if err != nil {
return err
}
defer func(fd *os.File) {
err := fd.Close()
if err != nil {
panic(err)
}
}(fd)
// Execute the template and write the output to the file.
if err := ExecIndex(fd,
"https://pkg.go.dev", 2); err != nil {
return err
}
return nil
}
// Vcs is an enum for version control systems supported by the standard Go
// toolchain.
//
// See https://pkg.go.dev/cmd/go#hdr-Module_configuration_for_non_public_modules
type Vcs string
// Vcs enum.
const (
VcsBazaar Vcs = "bzr"
VcsFossil Vcs = "fossil"
VcsGit Vcs = "git"
VcsMercurial Vcs = "hg"
VcsSubversion Vcs = "svn"
)
// Module represents a Go module to index.
type Module struct {
Path string // module path (without domain)
Vcs Vcs // vcs system
Repo string // repository's home
Dir string // url template
File string // url template
// internal
mu sync.Mutex
}
// GenerateFile generates the index file.
func (m *Module) GenerateFile(out string, domain string) error {
m.mu.Lock()
p := m.Path
v := m.Vcs
r := m.Repo
d := m.Dir
f := m.File
m.mu.Unlock()
outf := path.Join(out, p+".html")
// Create the file.
if strings.Contains(p, "/") {
if err := os.MkdirAll(path.Dir(outf), 0755); err != nil {
return err
}
}
fd, err := os.Create(outf)
if err != nil {
return err
}
defer func(fd *os.File) {
err := fd.Close()
if err != nil {
panic(err)
}
}(fd)
// Execute the template and write the output to the file.
if err := ExecModule(fd,
fmt.Sprintf("%s/%s", domain, p), string(v), r,
d, f); err != nil {
return err
}
return nil
}
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