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start help, some tweaks to stdio

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This commit is contained in:
Lisa Milne 2023-11-08 10:35:43 +10:00
parent 02f6ee6691
commit 10f1572bab
2 changed files with 30 additions and 7 deletions
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19
clite/commands.js
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@ -2,7 +2,24 @@ clite.commands.data = function() {
// insert commands below this line
clite.commands.load('help',function(args,env,io) {
io.write('yeah, I should probably implement this');
if (args.length > 1) {
// TODO: implement command help lookup
io.write('help with arguments is a work in progress');
}
io.write(`
Welcome to CLIte (pronounced like 'site' with an added L).
Various unix-like commands are available for navigating the CLIte shell:
ls - list directory contents
cat - concatenate files and print to std output or local file
touch - create a new file
less - simple text file viewer
Running any command with the argument -? will give you help for that program.
Or you can run help <command> to get the same info.
`);
return 0;
});

18
clite/core.js
View file

@ -794,16 +794,21 @@ clite.shell = {
clite.shell.writeLine(clite.shell.prompt.getHTML()+txt);
clite.shell.prompt.push('');
clite.term.preventInput();
// ready stdio (stdout,stdin)
// split command line into arguments
var args = clite.lib.strToArgs(txt);
// TODO: check for io redirects and piping, then setup stdio accordingly
// prepare stdio (stdin,stdout,stderr)
var stdio = {
error:clite.term.writeLine,
write:clite.term.writeLine,
read:clite.shell.readLine,
exit:clite.shell.exit,
istty:true
write:clite.term.writeLine,
error:clite.term.writeLine,
exit:clite.shell.exit, // equivalent to C's exit(), needed by asynchronous programs
istty:{
stdin:true, // false if stdin (read) is not clite.shell.readLine
stdout:true // false if stdout (write) is not clite.term.writeLine
}
};
// check for a macro
var args = clite.lib.strToArgs(txt);
// then either run the macro or expand the program to be executed via PATH
if (typeof clite.shell.macro[args[0]] != 'undefined') {
var r = clite.shell.macro[args[0]](args,stdio);
@ -990,6 +995,7 @@ clite.lib = {
base = clite.shell.env.PWD;
if (base[0] != '/')
base = clite.shell.env.PWD+'/'+base;
// TODO: support . and ..
return base+'/'+txt;
},
// convert a string into an argument array: 'ls /etc' -> ['ls',/etc]