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Allow stdin/stdout instead of files for source and object.
This commit is contained in:
Adrian Matoga
Piotr Fusik
parent
afb9f7830e
commit
2f67b3bab4
91
source/app.d
91
source/app.d
@ -25,26 +25,24 @@ import std.math;
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import std.path;
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import std.stdio;
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import std.string;
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import std.exception : assumeUnique;
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import std.range : empty, front, popFront;
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version (Windows) {
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import core.sys.windows.windows;
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}
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int readByte(File *file) {
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char c;
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if (file.readf("%c", &c) != 1)
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return -1;
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return c;
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}
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const string TITLE = "xasm 3.2.0";
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File messageStream;
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string sourceFilename = null;
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bool[26] options;
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string[26] optionParameters;
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string[] commandLineDefinitions = null;
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string objectFilename = null;
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string[] makeSources = null;
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immutable(ubyte)[][string] sourceFiles;
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int exitCode = 0;
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@ -176,13 +174,14 @@ File objectStream;
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int objectBytes = 0;
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bool getOption(char letter) {
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assert(letter >= 'a' && letter <= 'z');
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return options[letter - 'a'];
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}
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void warning(string msg, bool error = false) {
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stdout.flush();
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messageStream.flush();
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version (Windows) {
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HANDLE stderrHandle = GetStdHandle(STD_ERROR_HANDLE);
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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@ -1087,7 +1086,7 @@ File openInputFile(string filename) {
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File openOutputFile(string filename, string msg) {
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if (!getOption('q'))
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writeln(msg);
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messageStream.writeln(msg);
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try {
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return File(filename, "wb");
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} catch (Exception e) {
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@ -1185,8 +1184,11 @@ void objectByte(ubyte b) {
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} else {
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assert(pass2);
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if (!optionObject) return;
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if (!objectStream.isOpen)
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objectStream = openOutputFile(objectFilename, "Writing object file...");
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if (!objectStream.isOpen) {
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objectStream = objectFilename == "-"
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? stdout
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: openOutputFile(objectFilename, "Writing object file...");
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}
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try {
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objectStream.write(cast(char) b);
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} catch (Exception e) {
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@ -2302,7 +2304,6 @@ void assemblyIns() {
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}
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}
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File stream = openInputFile(filename);
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scope (exit) stream.close();
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try {
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stream.seek(offset, offset >= 0 ? SEEK_SET : SEEK_END);
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} catch (Exception e) {
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@ -2311,13 +2312,13 @@ void assemblyIns() {
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if (inOpcode)
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length = 1;
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while (length != 0) {
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int b = readByte(&stream);
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if (b < 0) {
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ubyte[1] b;
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if (stream.rawRead(b).length != 1) {
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if (length > 0)
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throw new AssemblyError("File is too short");
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break;
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}
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putByte(cast(ubyte) b);
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putByte(b[0]);
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if (length > 0) length--;
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}
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}
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@ -2796,11 +2797,17 @@ void assemblyLine() {
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}
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void assemblyFile(string filename) {
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immutable(ubyte)[] source = sourceFiles.require(filename, {
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File stream = stdin;
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if (filename != "-") {
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filename = filename.defaultExtension("asx");
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if (getOption('p'))
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filename = absolutePath(filename);
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File stream = openInputFile(filename);
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scope (exit) stream.close();
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stream = openInputFile(filename);
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}
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return stream.byChunk(65536).joiner.array.assumeUnique;
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}());
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string oldFilename = currentFilename;
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int oldLineNo = lineNo;
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currentFilename = filename;
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@ -2808,16 +2815,18 @@ void assemblyFile(string filename) {
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foundEnd = false;
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line = "";
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readChar: while (!foundEnd) {
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int b = readByte(&stream);
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if (source.empty)
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break;
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ubyte b = source.front;
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source.popFront;
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switch (b) {
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case -1:
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break readChar;
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case '\r':
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assemblyLine();
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line = "";
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b = readByte(&stream);
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if (b < 0)
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if (source.empty)
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break readChar;
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b = source.front;
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source.popFront;
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if (b != '\n')
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line ~= cast(char) b;
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break;
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@ -2944,10 +2953,17 @@ int main(string[] args) {
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else {
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if (sourceFilename is null)
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exitCode = 3;
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objectFilename = optionParameters['o' - 'a'];
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if (objectFilename is null) {
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objectFilename = sourceFilename == "-"
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? "-"
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: sourceFilename.setExtension("obx");
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}
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messageStream = objectFilename == "-" ? stderr : stdout;
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if (!getOption('q'))
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writeln(TITLE);
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messageStream.writeln(TITLE);
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if (exitCode != 0) {
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write(
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messageStream.write(
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`Syntax: xasm SOURCE [OPTIONS]
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-c Include false conditionals in listing
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-d LABEL=VALUE Define a label
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@ -2962,9 +2978,6 @@ int main(string[] args) {
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`);
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return exitCode;
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}
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objectFilename = optionParameters['o' - 'a'];
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if (objectFilename is null)
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objectFilename = sourceFilename.setExtension("obx");
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try {
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assemblyPass();
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pass2 = true;
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@ -2974,22 +2987,24 @@ int main(string[] args) {
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} catch (AssemblyError e) {
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warning(e.msg, true);
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exitCode = 2;
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if (objectFilename != "-") {
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objectStream.close();
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core.stdc.stdio.remove(toStringz(objectFilename));
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}
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}
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listingStream.close();
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objectStream.close();
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if (exitCode <= 1) {
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if (!getOption('q')) {
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writefln("%d lines of source assembled", totalLines);
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messageStream.writefln("%d lines of source assembled", totalLines);
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if (objectBytes > 0)
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writefln("%d bytes written to the object file", objectBytes);
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messageStream.writefln("%d bytes written to the object file", objectBytes);
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}
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if (getOption('m')) {
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writef("%s:", makeEscape(objectFilename));
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messageStream.writef("%s:", makeEscape(objectFilename));
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foreach (filename; makeSources)
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writef(" %s", makeEscape(filename));
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write("\n\txasm");
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messageStream.writef(" %s", makeEscape(filename));
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messageStream.write("\n\txasm");
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for (int i = 1; i < args.length; i++) {
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string arg = args[i];
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if (isOption(arg)) {
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@ -3001,9 +3016,9 @@ int main(string[] args) {
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break;
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case 'o':
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if (arg[0] == '/')
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writef(" /%c:$@", arg[1]);
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messageStream.writef(" /%c:$@", arg[1]);
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else {
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writef(" -%c $@", arg[1]);
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messageStream.writef(" -%c $@", arg[1]);
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++i;
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}
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break;
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@ -3011,18 +3026,18 @@ int main(string[] args) {
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if (arg[0] == '-'
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&& (letter == 'd' || letter == 'l' || letter == 't')
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&& i + 1 < args.length && !isOption(args[i + 1])) {
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writef(" %s %s", arg, makeEscape(args[++i]));
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messageStream.writef(" %s %s", arg, makeEscape(args[++i]));
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}
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else {
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writef(" %s", makeEscape(arg));
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messageStream.writef(" %s", makeEscape(arg));
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}
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break;
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}
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continue;
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}
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write(" $<");
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messageStream.write(" $<");
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}
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writeln();
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messageStream.writeln();
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}
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}
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return exitCode;
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@ -16,6 +16,7 @@ DESCRIPTION
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'SOURCE_FILE' is the name of the source file
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(you may omit the default `.asx` extension).
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Using '-' as 'SOURCE_FILE' makes *xasm* read from standard input.
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When invoked without any options, *xasm* assembles 'SOURCE_FILE'
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and writes the result to an object file named 'SOURCE_FILE'
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with the extension changed to `.obx`.
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@ -51,7 +52,9 @@ Your *make* or shell may require further escaping.
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*-o* 'OBJECT_FILE'::
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Sets output file name.
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The default is 'SOURCE_FILE' with the extension changed to `.obx`.
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Using '-' as 'OBJECT_FILE' makes *xasm* write to standard output.
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The default is 'SOURCE_FILE' with the extension changed to `.obx`, or
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standard output if standard input was specified as source.
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[[new_fullpaths]]*-p*::
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Prints absolute paths in listing and error messages.
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@ -709,6 +712,11 @@ and pseudo commands, except for `MWA`, `MWX` and `MWY`:
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HISTORY
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-------
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Version 3.x.x (20xx-xx-xx)
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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- source can optionally be read from standard input, and object can be
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written to standard output instead of files (by Adrian Matoga)
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Version 3.2.0 (2021-06-22)
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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- <<new_locallabel,local labels>> (contributed by Adrian Matoga)
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