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Commit 6fe6bb79 authored by Per Lindgren's avatar Per Lindgren
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parsing

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README.md
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...@@ -2,15 +2,13 @@ ...@@ -2,15 +2,13 @@
A cargo sub-commond for spanning the call stack for a `cortex-m` bare metal application. A cargo sub-commond for spanning the call stack for a `cortex-m` bare metal application.
## Installing ## Installing
> cargo install --path <PATH_TO cargo-call-stack> > cargo install --path <PATH_TO cargo-call-stack> -f
## Usage ## Usage
Assume we have have an existing `cortex-m` bare metal application, e.g., ... Assume we have have an existing `cortex-m` bare metal application, e.g., ...
> cargo call-stack --release --example hello1 > cargo call-stack --release --example hello1
## Tech notes ## Tech notes
### Cargo sub-commands ### Cargo sub-commands
......
src/main.rs
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...@@ -4,6 +4,80 @@ use std::io::{self, Read, Write}; ...@@ -4,6 +4,80 @@ use std::io::{self, Read, Write};
use std::process::{Command, Stdio}; use std::process::{Command, Stdio};
use std::{env, str}; use std::{env, str};
#[derive(Debug)]
struct Out {
hash: Option<String>,
crate_name: Option<String>,
out_dir: Option<String>,
}
// Parse the output from rustc
// we skip the last line (Finished ...)
// and look for `--crate-name x`, `extra-filename=y` and `--out dir z`
//
// Notice, the parsing is a bit of a hack, implemnting look ahead using flags.
fn parse_out(out_str: &str) -> Out {
let mut out = Out {
hash: None,
crate_name: None,
out_dir: None,
};
let output = out_str;
let mut i = output.lines().into_iter();
i.next_back(); // skip last line (Finished)
if let Some(line) = i.next_back() {
let mut crate_name = false;
let mut out_dir = false;
for part in line.split(' ') {
if crate_name {
out.crate_name = Some(part.to_string());
crate_name = false;
} else if out_dir {
out.out_dir = Some(part.to_string());
out_dir = false;
} else if part.starts_with("--crate-name") {
crate_name = true;
} else if part.starts_with("--out-dir") {
out_dir = true;
} else if part.starts_with("extra-filename=") {
out.hash = Some(part.split('=').nth(1).unwrap().to_string());
}
}
}
out
}
fn parse_output(output: &str) -> (Option<&str>, Option<&str>, Option<&str>) {
let mut suffix = None;
let mut crate_name = None;
let mut example = None;
let output = str::from_utf8(output.as_bytes()).unwrap();
println!("here ...");
let mut i = output.lines().into_iter();
i.next_back(); // skip last line
if let Some(line) = i.next_back() {
let mut b = false;
for part in line.split(' ') {
if b {
crate_name = Some(part);
b = false;
} else if part.starts_with("--crate-name") {
b = true;
println!("----- here ---------- {:?}", crate_name);
} else if part.starts_with("extra-filename=") {
suffix = part.split('=').nth(1);
println!("----- there ----------");
} else if part.starts_with("example") {
example = part.split('/').nth(1);
println!("----- there ----------");
};
}
//}
}
(suffix, crate_name, example)
}
fn main() { fn main() {
println!("start sub command"); println!("start sub command");
// first argument is the path to this binary; the second argument is always "call-stack" -- both can // first argument is the path to this binary; the second argument is always "call-stack" -- both can
...@@ -57,60 +131,74 @@ fn main() { ...@@ -57,60 +131,74 @@ fn main() {
} }
} }
// find out the argument passed to `--example`, if used at all let out = parse_out(str::from_utf8(&output).unwrap());
let mut example = None; println!("{:?}", out);
let mut iargs = args.iter(); // } else {
while let Some(arg) = iargs.next() { // panic!("could not determine hash, please recompile in `--release` mode");
if arg == "--example" { // }
example = iargs.next();
break;
}
}
// get the suffix of the example
let (example, suffix) = if let Some(example) = example {
let mut suffix = None;
let output = str::from_utf8(&output).unwrap();
println!("here ...");
for line in output.lines() {
if line.contains(&format!("examples/{}.rs", example)) {
for part in line.split(' ') {
if part.starts_with("extra-filename=") {
suffix = part.split('=').nth(1);
}
}
}
}
match suffix {
None => panic!(format!(
"Cannot determine hash, please run `touch example/{}.rs` to force recompiltaion.",
example
)),
Some(s) => (example, s),
}
} else {
// nothing to do if the user didn't use `--example`
println!("try to determinte hash");
let output = str::from_utf8(&output).unwrap();
println!("here ...");
let mut suffix = None;
for line in output.lines() {
for part in line.split(' ') {
if part.starts_with("extra-filename=") {
suffix = part.split('=').nth(1);
}
}
}
match suffix {
None => panic!(format!(
"Cannot determine hash, please force recompiltaion."
)),
Some(s) => panic!("main hash {}", s),
}
// return;
};
println!("{:?}", (example, suffix)); // find out the argument passed to `--example`, if used at all
// let mut example = None;
// let mut iargs = args.iter();
// while let Some(arg) = iargs.next() {
// if arg == "--example" {
// example = iargs.next();
// break;
// }
// }
// let output = str::from_utf8(&output).unwrap();
// if let (Some(hash), Some(crate_name), example) = parse_output(&output) {
// println!("{:?}, {:?}, {:?}", example, hash, crate_name);
// } else {
// panic!("could not determine hash, please recompile in `--release` mode");
// }
// // get the suffix of the example
// let (example, suffix) = if let Some(example) = example {
// let mut suffix = None;
// let output = str::from_utf8(&output).unwrap();
// println!("here ...");
// for line in output.lines() {
// if line.contains(&format!("examples/{}.rs", example)) {
// for part in line.split(' ') {
// if part.starts_with("extra-filename=") {
// suffix = part.split('=').nth(1);
// }
// }
// }
// }
// match suffix {
// None => panic!(format!(
// "Cannot determine hash, please run `touch example/{}.rs` to force recompiltaion.",
// example
// )),
// Some(s) => (example, s),
// }
// } else {
// // nothing to do if the user didn't use `--example`
// println!("try to determinte hash");
// let output = str::from_utf8(&output).unwrap();
// println!("here ...");
// let mut suffix = None;
// for line in output.lines() {
// for part in line.split(' ') {
// if part.starts_with("extra-filename=") {
// suffix = part.split('=').nth(1);
// }
// }
// }
// match suffix {
// None => panic!(format!(
// "Cannot determine hash, please force recompiltaion."
// )),
// Some(s) => panic!("main hash {}", s),
// }
// // return;
// };
// println!("{:?}", (example, suffix));
/* /*
let profile = if args.iter().any(|a| a == "--release") { let profile = if args.iter().any(|a| a == "--release") {
...@@ -152,3 +240,12 @@ fn main() { ...@@ -152,3 +240,12 @@ fn main() {
unsafe { libc::getuid() } unsafe { libc::getuid() }
*/ */
} }
// blx511
// ARN
// LINDGREN
// PER
// 03021968 Piteå
// Swedish
// pass#
// Aquamarine
// Tourist
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