mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-07 19:51:51 +09:00
pipe is wip but && operator kinda works
This commit is contained in:
minjaesong
@@ -235,8 +235,6 @@ shell.parse = function(input) {
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tokens.push(stringBuffer);
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}
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println(tokens)
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return tokens;
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}
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shell.resolvePathInput = function(input) {
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@@ -385,107 +383,147 @@ shell.coreutils.chdir = shell.coreutils.cd;
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Object.freeze(shell.coreutils);
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shell.execute = function(line) {
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if (0 == line.size) return;
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var tokens = shell.parse(line);
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var cmd = tokens[0];
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if (cmd === undefined || cmd === '') return 0;
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let parsedTokens = shell.parse(line); // echo, "hai", |, less
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let statements = [] // [[echo, "hai"], [less]]
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let operators = [] // [|]
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// handle Ctrl-C
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if (con.hitterminate()) return 1;
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if (shell.coreutils[cmd.toLowerCase()] !== undefined) {
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var retval = shell.coreutils[cmd.toLowerCase()](tokens);
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return retval|0; // return value of undefined will cast into 0
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}
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else {
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// search through PATH for execution
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var fileExists = false;
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var searchDir = (cmd.startsWith("/")) ? [""] : ["/"+shell_pwd.join("/")].concat(_TVDOS.getPath());
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var pathExt = []; // it seems Nashorn does not like 'let' too much? this line gets ignored sometimes
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// fill pathExt using %PATHEXT% but also capitalise them
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if (cmd.split(".")[1] === undefined)
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_TVDOS.variables.PATHEXT.split(';').forEach(function(it) { pathExt.push(it); pathExt.push(it.toUpperCase()); });
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else
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pathExt.push(""); // final empty extension
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searchLoop:
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for (var i = 0; i < searchDir.length; i++) {
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for (var j = 0; j < pathExt.length; j++) {
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var search = searchDir[i]; if (!search.endsWith('\\')) search += '\\';
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var path = trimStartRevSlash(search + cmd + pathExt[j]);
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if (DEBUG_PRINT) {
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serial.println("[command.js > shell.execute] file search path: "+path);
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}
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if (0 == filesystem.open(CURRENT_DRIVE, path, "R")) {
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fileExists = true;
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break searchLoop;
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}
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}
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}
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if (!fileExists) {
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printerrln('Bad command or filename: "'+cmd+'"');
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return 127;
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let opRegex = /[|>&<]/
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let stmtBuf = []
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parsedTokens.forEach((tok, i) => {
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if (tok.match(opRegex)) {
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operators.push(tok)
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statements.push(stmtBuf.slice())
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stmtBuf = []
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}
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else {
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var programCode = filesystem.readAll(CURRENT_DRIVE);
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var extension = undefined;
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// get proper extension
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var dotSepTokens = cmd.split('.');
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if (dotSepTokens.length > 1) extension = dotSepTokens[dotSepTokens.length - 1].toUpperCase();
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stmtBuf.push(tok)
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}
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})
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if (stmtBuf[0] !== undefined) {
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statements.push(stmtBuf.slice())
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}
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if ("BAT" == extension) {
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// parse and run as batch file
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var lines = programCode.split('\n').filter(function(it) { return it.length > 0; });
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lines.forEach(function(line) {
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shell.execute(line);
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});
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let retValue = undefined // return value of the previous statement
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for (let c = 0; c < statements.length; c++) {
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let op = operators[c]
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// TODO : if operator is not undefined, swap built-in print functions with ones that 'prints' on pipes instead of stdout
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let tokens = statements[c]
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let cmd = tokens[0];
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if (cmd === undefined || cmd === '') {
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retValue = 0;
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continue
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}
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// handle Ctrl-C
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if (con.hitterminate()) {
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retValue = 1;
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continue
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}
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if (shell.coreutils[cmd.toLowerCase()] !== undefined) {
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var retval = shell.coreutils[cmd.toLowerCase()](tokens);
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retValue = retval|0; // return value of undefined will cast into 0
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continue
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}
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else {
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// search through PATH for execution
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var fileExists = false;
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var searchDir = (cmd.startsWith("/")) ? [""] : ["/"+shell_pwd.join("/")].concat(_TVDOS.getPath());
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var pathExt = []; // it seems Nashorn does not like 'let' too much? this line gets ignored sometimes
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// fill pathExt using %PATHEXT% but also capitalise them
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if (cmd.split(".")[1] === undefined)
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_TVDOS.variables.PATHEXT.split(';').forEach(function(it) { pathExt.push(it); pathExt.push(it.toUpperCase()); });
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else
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pathExt.push(""); // final empty extension
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searchLoop:
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for (var i = 0; i < searchDir.length; i++) {
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for (var j = 0; j < pathExt.length; j++) {
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var search = searchDir[i]; if (!search.endsWith('\\')) search += '\\';
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var path = trimStartRevSlash(search + cmd + pathExt[j]);
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if (DEBUG_PRINT) {
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serial.println("[command.js > shell.execute] file search path: "+path);
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}
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if (0 == filesystem.open(CURRENT_DRIVE, path, "R")) {
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fileExists = true;
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break searchLoop;
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}
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}
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}
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if (!fileExists) {
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printerrln('Bad command or filename: "'+cmd+'"');
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retValue = 127;
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continue
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}
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else {
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let gotError = false;
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var programCode = filesystem.readAll(CURRENT_DRIVE);
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var extension = undefined;
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// get proper extension
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var dotSepTokens = cmd.split('.');
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if (dotSepTokens.length > 1) extension = dotSepTokens[dotSepTokens.length - 1].toUpperCase();
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try {
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errorlevel = 0; // reset the number
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if (_G.shellProgramTitles === undefined) _G.shellProgramTitles = [];
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_G.shellProgramTitles.push(cmd.toUpperCase())
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sendLcdMsg(_G.shellProgramTitles[_G.shellProgramTitles.length - 1]);
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//serial.println(_G.shellProgramTitles);
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errorlevel = execApp(programCode, tokens); // return value of undefined will cast into 0
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if ("BAT" == extension) {
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// parse and run as batch file
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var lines = programCode.split('\n').filter(function(it) { return it.length > 0 }); // this return is not shell's return!
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lines.forEach(function(line) {
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shell.execute(line);
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});
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}
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catch (e) {
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gotError = true;
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else {
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let gotError = false;
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serial.printerr(`[command.js] program quit with ${e}:\n${e.stack || '(stack trace unavailable)'}`);
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try {
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errorlevel = 0; // reset the number
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if (`${e}`.startsWith("InterruptedException"))
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errorlevel = SIGTERM.name;
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else if (e instanceof IllegalAccessException || `${e}`.startsWith("net.torvald.tsvm.ErrorIllegalAccess"))
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errorlevel = SIGSEGV.name;
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if (_G.shellProgramTitles === undefined) _G.shellProgramTitles = [];
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_G.shellProgramTitles.push(cmd.toUpperCase())
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sendLcdMsg(_G.shellProgramTitles[_G.shellProgramTitles.length - 1]);
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//serial.println(_G.shellProgramTitles);
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// exception catched means something went wrong, so if errorlevel is found to be zero, force set to 1.
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if (errorlevel === 0 || errorlevel == undefined)
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errorlevel = 1;
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}
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finally {
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// sometimes no-error program may return nothing as the errorlevel; force set to 0 then.
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if (!gotError && (errorlevel == undefined || (typeof errorlevel.trim == "function" && errorlevel.trim().length == 0) || isNaN(errorlevel)))
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errorlevel = 0;
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errorlevel = execApp(programCode, tokens); // return value of undefined will cast into 0
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}
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catch (e) {
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gotError = true;
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serial.printerr(`errorlevel: ${errorlevel}`);
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serial.printerr(`[command.js] program quit with ${e}:\n${e.stack || '(stack trace unavailable)'}`);
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_G.shellProgramTitles.pop();
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sendLcdMsg(_G.shellProgramTitles[_G.shellProgramTitles.length - 1]);
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//serial.println(_G.shellProgramTitles);
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if (`${e}`.startsWith("InterruptedException"))
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errorlevel = SIGTERM.name;
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else if (e instanceof IllegalAccessException || `${e}`.startsWith("net.torvald.tsvm.ErrorIllegalAccess"))
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errorlevel = SIGSEGV.name;
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return errorlevel;
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// exception catched means something went wrong, so if errorlevel is found to be zero, force set to 1.
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if (errorlevel === 0 || errorlevel == undefined)
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errorlevel = 1;
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}
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finally {
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// sometimes no-error program may return nothing as the errorlevel; force set to 0 then.
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if (!gotError && (errorlevel == undefined || (typeof errorlevel.trim == "function" && errorlevel.trim().length == 0) || isNaN(errorlevel)))
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errorlevel = 0;
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serial.printerr(`errorlevel: ${errorlevel}`);
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_G.shellProgramTitles.pop();
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sendLcdMsg(_G.shellProgramTitles[_G.shellProgramTitles.length - 1]);
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//serial.println(_G.shellProgramTitles);
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retValue = errorlevel;
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continue
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}
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}
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}
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}
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return retValue
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}
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};
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shell.pipes = {}; // syntax: _G.shell.pipes[name] = contents; all pipes are named pipes just like in Windows
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