From ab84ad75629b0a4124221023ca91411d2cd62a32 Mon Sep 17 00:00:00 2001
From: Ben Bridle <ben@derelict.engineering>
Date: Tue, 25 Mar 2025 12:46:49 +1300
Subject: Restructure program
This commit also includes changes to devices according to the latest
devices specification, in particular the math and system devices.
---
src/bin/br/main.rs | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 111 insertions(+)
create mode 100644 src/bin/br/main.rs
(limited to 'src/bin/br/main.rs')
diff --git a/src/bin/br/main.rs b/src/bin/br/main.rs
new file mode 100644
index 0000000..52c53b0
--- /dev/null
+++ b/src/bin/br/main.rs
@@ -0,0 +1,111 @@
+#![feature(path_add_extension)]
+
+mod asm;
+mod run;
+mod formats;
+
+use switchboard::*;
+
+
+fn main() {
+ let mut args = Switchboard::from_env();
+ args.named("help").short('h');
+ args.named("version");
+ args.named("verbose").short('v');
+
+ if args.get("help").as_bool() {
+ print_help();
+ }
+ if args.get("version").as_bool() {
+ print_version();
+ }
+ if args.get("verbose").as_bool() {
+ log::set_log_level(log::LogLevel::Info);
+ }
+ match args.peek() {
+ Some("run") => { args.pop(); run::main(args) },
+ Some("asm") => { args.pop(); asm::main(args) },
+ _ => run::main(args),
+ }
+}
+
+
+fn print_help() -> ! {
+ eprintln!("\
+Usage: br [source]
+ br asm [source] [destination]
+
+Integrated Bedrock assembler and emulator.
+
+Usage:
+ To load a Bedrock program from a file, run `br <path>`, where
+ <path> is the path to an assembled Bedrock program.
+
+ To load a Bedrock program from piped input, run `<command> | br`,
+ where <command> is a command that generates Bedrock bytecode.
+
+ To assemble a Bedrock program from a source file and write to an
+ output file, run `br asm <source> <output>`, where <source> is the
+ path of the source file and <output> is the path to write to.
+
+ To assemble and run a Bedrock program without saving to a file,
+ run `br asm <source> | br`, where <source> is the path of the
+ source file.
+
+Environment variables:
+ BEDROCK_PATH
+ A list of colon-separated paths which will be searched to find
+ a Bedrock program when the program doesn't exist in the current
+ directory. This allows the user to run frequently-used programs
+ from any directory.
+ BEDROCK_LIBS
+ A list of colon-separated paths which will be searched to find
+ Bedrock source code files to use as libraries when assembling a
+ Bedrock program. If a library file resolves an unresolved symbol
+ in the program being assembled, the library file will be merged
+ into the program.
+
+Arguments:
+ [program] Path to a Bedrock program to run
+
+Switches:
+ --fullscreen (-f) Start the program in fullscreen mode (toggle with F11)
+ --size=<dim> (-s) Set the initial window size in the format <width>x<height>
+ --zoom=<scale> (-z) Set the pixel size for the screen (change with F5/F6)
+ --show-cursor (-c) Show the operating system cursor over the window
+ --palette=<pal> Set a debug colour palette in the format <rgb>,... (toggle with F2)
+ --debug, (-d) Show debug information while the program is running
+ --decode-stdin (-i) Decode transmissions on standard input from text lines.
+ --encode-stdout (-o) Encode transmissions on standard output as text lines.
+ --help (-h) Print this help information
+ --verbose, (-v) Print additional information
+ --version Print the program version and exit
+
+Arguments (asm mode):
+ [source] Bedrock source code file to assemble.
+ [destination] Destination path for assembler output.
+
+Switches (asm mode):
+ --dry-run (-n) Assemble and show errors only, don't write any output
+ --extension File extension to identify source files (default is 'brc')
+ --format=<fmt> Output format to use for assembled program (default is 'binary')
+ --no-project-libs Don't search for libraries in the source parent folder
+ --no-env-libs Don't search for libraries in the BEDROCK_LIBS path variable
+ --no-libs Combination of --no-project-libs and --no-env-libs
+ --tree Display a tree visualisation of all included library files
+ --with-symbols Also generate debug symbols file with extension '.sym'
+ --help (-h) Print this help information
+ --verbose, (-v) Print additional information
+ --version Print the program version and exit
+");
+ std::process::exit(0);
+}
+
+
+fn print_version() -> ! {
+ let name = env!("CARGO_PKG_NAME");
+ let version = env!("CARGO_PKG_VERSION");
+ eprintln!("{name} v{version}");
+ eprintln!("Written by Ben Bridle.");
+ std::process::exit(0);
+}
--
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