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