mirror of
https://github.com/zyedidia/micro.git
synced 2026-03-10 14:42:47 +09:00
9ab9f8bc1c
InfoBar should really receive the resize event, to know the window width in order to do horizontal scrolling of the command line when it doesn't fit in the screen. Although currently it doesn't scroll the command line at all (see issue #2527) and just ignores the resize event, but we should fix that anyway, so let's forward the resize event to it.
484 lines
12 KiB
Go
484 lines
12 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"os/signal"
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"regexp"
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"runtime"
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"runtime/pprof"
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"sort"
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"strconv"
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"syscall"
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"time"
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"github.com/go-errors/errors"
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isatty "github.com/mattn/go-isatty"
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lua "github.com/yuin/gopher-lua"
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"github.com/zyedidia/micro/v2/internal/action"
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"github.com/zyedidia/micro/v2/internal/buffer"
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"github.com/zyedidia/micro/v2/internal/clipboard"
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"github.com/zyedidia/micro/v2/internal/config"
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"github.com/zyedidia/micro/v2/internal/screen"
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"github.com/zyedidia/micro/v2/internal/shell"
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"github.com/zyedidia/micro/v2/internal/util"
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"github.com/zyedidia/tcell/v2"
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)
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var (
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// Command line flags
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flagVersion = flag.Bool("version", false, "Show the version number and information")
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flagConfigDir = flag.String("config-dir", "", "Specify a custom location for the configuration directory")
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flagOptions = flag.Bool("options", false, "Show all option help")
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flagDebug = flag.Bool("debug", false, "Enable debug mode (prints debug info to ./log.txt)")
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flagProfile = flag.Bool("profile", false, "Enable CPU profiling (writes profile info to ./micro.prof)")
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flagPlugin = flag.String("plugin", "", "Plugin command")
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flagClean = flag.Bool("clean", false, "Clean configuration directory")
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optionFlags map[string]*string
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sigterm chan os.Signal
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sighup chan os.Signal
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timerChan chan func()
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)
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func InitFlags() {
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flag.Usage = func() {
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fmt.Println("Usage: micro [OPTIONS] [FILE]...")
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fmt.Println("-clean")
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fmt.Println(" \tCleans the configuration directory")
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fmt.Println("-config-dir dir")
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fmt.Println(" \tSpecify a custom location for the configuration directory")
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fmt.Println("[FILE]:LINE:COL (if the `parsecursor` option is enabled)")
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fmt.Println("+LINE:COL")
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fmt.Println(" \tSpecify a line and column to start the cursor at when opening a buffer")
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fmt.Println("-options")
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fmt.Println(" \tShow all option help")
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fmt.Println("-debug")
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fmt.Println(" \tEnable debug mode (enables logging to ./log.txt)")
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fmt.Println("-profile")
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fmt.Println(" \tEnable CPU profiling (writes profile info to ./micro.prof")
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fmt.Println(" \tso it can be analyzed later with \"go tool pprof micro.prof\")")
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fmt.Println("-version")
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fmt.Println(" \tShow the version number and information")
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fmt.Print("\nMicro's plugins can be managed at the command line with the following commands.\n")
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fmt.Println("-plugin install [PLUGIN]...")
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fmt.Println(" \tInstall plugin(s)")
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fmt.Println("-plugin remove [PLUGIN]...")
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fmt.Println(" \tRemove plugin(s)")
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fmt.Println("-plugin update [PLUGIN]...")
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fmt.Println(" \tUpdate plugin(s) (if no argument is given, updates all plugins)")
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fmt.Println("-plugin search [PLUGIN]...")
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fmt.Println(" \tSearch for a plugin")
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fmt.Println("-plugin list")
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fmt.Println(" \tList installed plugins")
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fmt.Println("-plugin available")
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fmt.Println(" \tList available plugins")
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fmt.Print("\nMicro's options can also be set via command line arguments for quick\nadjustments. For real configuration, please use the settings.json\nfile (see 'help options').\n\n")
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fmt.Println("-option value")
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fmt.Println(" \tSet `option` to `value` for this session")
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fmt.Println(" \tFor example: `micro -syntax off file.c`")
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fmt.Println("\nUse `micro -options` to see the full list of configuration options")
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}
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optionFlags = make(map[string]*string)
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for k, v := range config.DefaultAllSettings() {
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optionFlags[k] = flag.String(k, "", fmt.Sprintf("The %s option. Default value: '%v'.", k, v))
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}
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flag.Parse()
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if *flagVersion {
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// If -version was passed
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fmt.Println("Version:", util.Version)
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fmt.Println("Commit hash:", util.CommitHash)
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fmt.Println("Compiled on", util.CompileDate)
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os.Exit(0)
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}
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if *flagOptions {
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// If -options was passed
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var keys []string
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m := config.DefaultAllSettings()
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for k := range m {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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for _, k := range keys {
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v := m[k]
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fmt.Printf("-%s value\n", k)
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fmt.Printf(" \tDefault value: '%v'\n", v)
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}
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os.Exit(0)
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}
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if util.Debug == "OFF" && *flagDebug {
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util.Debug = "ON"
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}
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}
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// DoPluginFlags parses and executes any flags that require LoadAllPlugins (-plugin and -clean)
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func DoPluginFlags() {
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if *flagClean || *flagPlugin != "" {
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config.LoadAllPlugins()
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if *flagPlugin != "" {
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args := flag.Args()
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config.PluginCommand(os.Stdout, *flagPlugin, args)
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} else if *flagClean {
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CleanConfig()
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}
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os.Exit(0)
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}
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}
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// LoadInput determines which files should be loaded into buffers
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// based on the input stored in flag.Args()
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func LoadInput(args []string) []*buffer.Buffer {
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// There are a number of ways micro should start given its input
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// 1. If it is given a files in flag.Args(), it should open those
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// 2. If there is no input file and the input is not a terminal, that means
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// something is being piped in and the stdin should be opened in an
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// empty buffer
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// 3. If there is no input file and the input is a terminal, an empty buffer
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// should be opened
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var filename string
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var input []byte
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var err error
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buffers := make([]*buffer.Buffer, 0, len(args))
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btype := buffer.BTDefault
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if !isatty.IsTerminal(os.Stdout.Fd()) {
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btype = buffer.BTStdout
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}
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files := make([]string, 0, len(args))
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flagStartPos := buffer.Loc{-1, -1}
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flagr := regexp.MustCompile(`^\+(\d+)(?::(\d+))?$`)
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for _, a := range args {
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match := flagr.FindStringSubmatch(a)
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if len(match) == 3 && match[2] != "" {
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line, err := strconv.Atoi(match[1])
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if err != nil {
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screen.TermMessage(err)
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continue
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}
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col, err := strconv.Atoi(match[2])
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if err != nil {
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screen.TermMessage(err)
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continue
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}
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flagStartPos = buffer.Loc{col - 1, line - 1}
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} else if len(match) == 3 && match[2] == "" {
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line, err := strconv.Atoi(match[1])
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if err != nil {
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screen.TermMessage(err)
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continue
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}
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flagStartPos = buffer.Loc{0, line - 1}
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} else {
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files = append(files, a)
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}
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}
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if len(files) > 0 {
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// Option 1
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// We go through each file and load it
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for i := 0; i < len(files); i++ {
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buf, err := buffer.NewBufferFromFileAtLoc(files[i], btype, flagStartPos)
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if err != nil {
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screen.TermMessage(err)
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continue
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}
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// If the file didn't exist, input will be empty, and we'll open an empty buffer
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buffers = append(buffers, buf)
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}
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} else if !isatty.IsTerminal(os.Stdin.Fd()) {
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// Option 2
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// The input is not a terminal, so something is being piped in
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// and we should read from stdin
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input, err = ioutil.ReadAll(os.Stdin)
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if err != nil {
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screen.TermMessage("Error reading from stdin: ", err)
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input = []byte{}
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}
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buffers = append(buffers, buffer.NewBufferFromStringAtLoc(string(input), filename, btype, flagStartPos))
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} else {
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// Option 3, just open an empty buffer
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buffers = append(buffers, buffer.NewBufferFromStringAtLoc(string(input), filename, btype, flagStartPos))
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}
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return buffers
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}
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func main() {
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defer func() {
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if util.Stdout.Len() > 0 {
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fmt.Fprint(os.Stdout, util.Stdout.String())
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}
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os.Exit(0)
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}()
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var err error
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InitFlags()
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if *flagProfile {
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f, err := os.Create("micro.prof")
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if err != nil {
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log.Fatal("error creating CPU profile: ", err)
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}
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if err := pprof.StartCPUProfile(f); err != nil {
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log.Fatal("error starting CPU profile: ", err)
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}
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defer pprof.StopCPUProfile()
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}
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InitLog()
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err = config.InitConfigDir(*flagConfigDir)
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if err != nil {
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screen.TermMessage(err)
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}
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config.InitRuntimeFiles()
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err = config.ReadSettings()
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if err != nil {
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screen.TermMessage(err)
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}
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err = config.InitGlobalSettings()
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if err != nil {
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screen.TermMessage(err)
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}
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// flag options
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for k, v := range optionFlags {
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if *v != "" {
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nativeValue, err := config.GetNativeValue(k, config.DefaultAllSettings()[k], *v)
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if err != nil {
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screen.TermMessage(err)
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continue
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}
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config.GlobalSettings[k] = nativeValue
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config.VolatileSettings[k] = true
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}
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}
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DoPluginFlags()
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err = screen.Init()
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if err != nil {
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fmt.Println(err)
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fmt.Println("Fatal: Micro could not initialize a Screen.")
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os.Exit(1)
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}
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m := clipboard.SetMethod(config.GetGlobalOption("clipboard").(string))
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clipErr := clipboard.Initialize(m)
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defer func() {
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if err := recover(); err != nil {
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if screen.Screen != nil {
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screen.Screen.Fini()
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}
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if e, ok := err.(*lua.ApiError); ok {
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fmt.Println("Lua API error:", e)
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} else {
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fmt.Println("Micro encountered an error:", errors.Wrap(err, 2).ErrorStack(), "\nIf you can reproduce this error, please report it at https://github.com/zyedidia/micro/issues")
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}
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// backup all open buffers
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for _, b := range buffer.OpenBuffers {
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b.Backup()
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}
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os.Exit(1)
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}
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}()
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err = config.LoadAllPlugins()
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if err != nil {
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screen.TermMessage(err)
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}
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action.InitBindings()
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action.InitCommands()
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err = config.InitColorscheme()
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if err != nil {
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screen.TermMessage(err)
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}
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err = config.RunPluginFn("preinit")
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if err != nil {
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screen.TermMessage(err)
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}
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action.InitGlobals()
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buffer.SetMessager(action.InfoBar)
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args := flag.Args()
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b := LoadInput(args)
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if len(b) == 0 {
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// No buffers to open
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screen.Screen.Fini()
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runtime.Goexit()
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}
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action.InitTabs(b)
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err = config.RunPluginFn("init")
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if err != nil {
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screen.TermMessage(err)
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}
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err = config.RunPluginFn("postinit")
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if err != nil {
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screen.TermMessage(err)
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}
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if clipErr != nil {
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log.Println(clipErr, " or change 'clipboard' option")
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}
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if a := config.GetGlobalOption("autosave").(float64); a > 0 {
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config.SetAutoTime(int(a))
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config.StartAutoSave()
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}
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screen.Events = make(chan tcell.Event)
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sigterm = make(chan os.Signal, 1)
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sighup = make(chan os.Signal, 1)
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signal.Notify(sigterm, syscall.SIGTERM, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGABRT)
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signal.Notify(sighup, syscall.SIGHUP)
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timerChan = make(chan func())
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// Here is the event loop which runs in a separate thread
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go func() {
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for {
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screen.Lock()
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e := screen.Screen.PollEvent()
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screen.Unlock()
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if e != nil {
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screen.Events <- e
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}
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}
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}()
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// clear the drawchan so we don't redraw excessively
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// if someone requested a redraw before we started displaying
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for len(screen.DrawChan()) > 0 {
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<-screen.DrawChan()
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}
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// wait for initial resize event
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select {
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case event := <-screen.Events:
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action.Tabs.HandleEvent(event)
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case <-time.After(10 * time.Millisecond):
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// time out after 10ms
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}
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for {
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DoEvent()
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}
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}
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// DoEvent runs the main action loop of the editor
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func DoEvent() {
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var event tcell.Event
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// Display everything
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screen.Screen.Fill(' ', config.DefStyle)
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screen.Screen.HideCursor()
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action.Tabs.Display()
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for _, ep := range action.MainTab().Panes {
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ep.Display()
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}
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action.MainTab().Display()
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action.InfoBar.Display()
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screen.Screen.Show()
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// Check for new events
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select {
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case f := <-shell.Jobs:
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// If a new job has finished while running in the background we should execute the callback
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f.Function(f.Output, f.Args)
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case <-config.Autosave:
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for _, b := range buffer.OpenBuffers {
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b.AutoSave()
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}
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case <-shell.CloseTerms:
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case event = <-screen.Events:
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case <-screen.DrawChan():
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for len(screen.DrawChan()) > 0 {
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<-screen.DrawChan()
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}
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case f := <-timerChan:
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f()
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case <-sighup:
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for _, b := range buffer.OpenBuffers {
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if !b.Modified() {
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b.Fini()
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}
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}
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os.Exit(0)
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case <-sigterm:
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for _, b := range buffer.OpenBuffers {
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if !b.Modified() {
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b.Fini()
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}
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}
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if screen.Screen != nil {
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screen.Screen.Fini()
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}
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os.Exit(0)
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}
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if event == nil {
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return
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}
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if e, ok := event.(*tcell.EventError); ok {
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log.Println("tcell event error: ", e.Error())
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if e.Err() == io.EOF {
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// shutdown due to terminal closing/becoming inaccessible
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for _, b := range buffer.OpenBuffers {
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if !b.Modified() {
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b.Fini()
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}
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}
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if screen.Screen != nil {
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screen.Screen.Fini()
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}
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os.Exit(0)
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}
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return
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}
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_, resize := event.(*tcell.EventResize)
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if resize {
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action.InfoBar.HandleEvent(event)
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action.Tabs.HandleEvent(event)
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} else if action.InfoBar.HasPrompt {
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action.InfoBar.HandleEvent(event)
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} else {
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action.Tabs.HandleEvent(event)
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}
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}
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