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// Copyright (C) 2021 nytpu
// SPDX-License-Identifier: AGPL-3.0-or-later
// For more license details, see LICENSE or <https://www.gnu.org/licenses/agpl-3.0.html>.
// comitium is a feed aggregator for gemini. see README.md for more details and
// doc/comitium.1.scd for a manual page.
package main
import (
"fmt"
"log"
"os"
"path/filepath"
"github.com/mitchellh/go-homedir"
)
func main() {
if len(os.Args) < 2 {
fmt.Fprint(os.Stderr, "Please provide a command.\n\n")
usage()
os.Exit(1)
}
// these are special cases where we shouldn't bother to do anything else
if os.Args[1] == "help" {
usage()
os.Exit(0)
}
if os.Args[1] == "version" {
fmt.Printf("comitium v%v, commit %v\n", Version, Commit)
os.Exit(0)
}
c, ok := commands[os.Args[1]]
if !ok {
fmt.Fprint(os.Stderr, "Unrecognized Command.\n\n")
usage()
os.Exit(1)
}
c.AddFlagSet(globalFs)
c.Parse(os.Args[2:])
// dataPath is the location where all the data (list of subs, cached hashes,
// etcetera) are stored
dataPath := getDataPath()
switch os.Args[1] {
case "refresh":
fmt.Println("Refresh")
case "list":
fmt.Println("List")
case "add":
fmt.Println("Add")
fmt.Printf("Format: %v\n", *addTypeFlag)
case "remove":
fmt.Println("Remove")
}
fmt.Printf("Detected data path: %v\n", dataPath)
}
// verifyPath will expand ~ if neccessary and will clean the path.
func verifyPath(p string) string {
if n, err := homedir.Expand(p); err != nil {
return filepath.Clean(p)
} else {
return filepath.Clean(n)
}
}
// getDataPath will return a data path in a gracefully degrading tree, picking
// the first that exists:
// --data flag, $COMITIUM_DATA, $XDG_DATA_HOME/comitium,
// $HOME/.local/share/comitium, $HOME/.comitium, $PWD (last resort)
func getDataPath() string {
if *dataFlag != "" {
return verifyPath(*dataFlag)
}
if env := os.Getenv("COMITIUM_DATA"); env != "" {
return verifyPath(env)
}
if env := os.Getenv("XDG_DATA_HOME"); env != "" {
return verifyPath(env + "/comitium")
}
home, err := homedir.Dir()
if err == nil {
if _, err := os.Stat(verifyPath(home + "/.local")); !os.IsNotExist(err) {
return verifyPath(home + "/.local/share/comitium")
}
return verifyPath(home + "/.comitium")
}
log.Printf("Error finding a suitable directory! Falling back to the current working directory. See \"comitium help\" or comitium(1) for more information.")
return verifyPath("comitium")
}
func usage() {
fmt.Fprintf(os.Stderr, "Usage:\n")
fmt.Fprintf(os.Stderr, " %v <command> [FLAGS] [ARGUMENTS]\n\n", os.Args[0])
fmt.Fprint(os.Stderr, "Commands:\n")
for _, v := range commandInfo {
// FIXME: find a way to dynamically match the spacing that
// flag.PrintDefaults() outputs (instead of hardcoding "-20")
fmt.Fprintf(os.Stderr, " %-20s%s\n", v.Name, v.Usage)
}
fmt.Fprintf(os.Stderr, "\nGlobal Flags:\n%v", globalFs.FlagUsages())
// command-specific flags should be printed here
fmt.Fprintf(os.Stderr, "Flags for \"add\":\n%v\n", commands["add"].FlagUsages())
//fmt.Fprintf(os.Stderr, "To see specific details for a command, run \"%v <command> -h\"\n", os.Args[0])
fmt.Fprint(os.Stderr, "For more help, see comitium(1).\n")
}
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