porting extract_colorscheme.py to rust

docs/development.md

@@ -26,8 +26,3 @@ Cross-compilation notes: https://github.com/rust-embedded/cross
 
 cross build --release --target x86_64-pc-windows-gnu --bin editor
 wine target/x86_64-pc-windows-gnu/release/editor.exe data/maps/montlake_no_edits.abst
-
-Problems:
-- build.rs tries to invoke python
-	- port the python script to rust ;)
-- GLSL 1.40 not supported (in wine at least)

docs/install.md

@@ -3,8 +3,7 @@
 ## Dependencies
 
 To build, you need a Linux-like environment with `bash`, `wget`, `unzip`, etc.
-You also need `python` for the editor crate to build, and `osmosis` for the
-import script.
+You also `osmosis` for the import script.
 
 At runtime if you want to use the screen-capture plugin, you need `scrot`.
 

editor/Cargo.toml

@@ -22,3 +22,6 @@ serde = "1.0.89"
 serde_derive = "1.0.89"
 sim = { path = "../sim" }
 structopt = "0.2.15"
+
+[build-dependencies]
+walkdir = "2.2.7"

editor/build.rs

@@ -1,14 +1,100 @@
+use std::collections::BTreeMap;
 use std::env;
-use std::path::Path;
-use std::process::Command;
+use std::fs::File;
+use std::io::{Read, Write};
+use walkdir::WalkDir;
 
 // TODO See https://github.com/dtolnay/inventory for an alternate approach.
 fn main() {
-    let output = Path::new(&env::var("OUT_DIR").unwrap()).join("init_colors.rs");
+    let mut mapping: BTreeMap<String, String> = BTreeMap::new();
+    for entry in WalkDir::new("src") {
+        let path = format!("{}", entry.unwrap().into_path().display());
+        if path.ends_with(".rs") && path != "src/colors.rs" {
+            for (k, v) in read_file(&path) {
+                if mapping.contains_key(&k) {
+                    panic!("Color {} defined twice", k);
+                }
+                mapping.insert(k, v);
+            }
+        }
+    }
 
-    assert!(Command::new("/usr/bin/python2")
-        .args(&["extract_colorscheme.py", output.to_str().unwrap()])
-        .status()
-        .unwrap()
-        .success());
+    let mut f = File::create(format!("{}/init_colors.rs", env::var("OUT_DIR").unwrap())).unwrap();
+    writeln!(f, "fn default_colors() -> HashMap<String, Color> {{").unwrap();
+    writeln!(f, "    let mut m = HashMap::new();").unwrap();
+    for (k, v) in mapping {
+        writeln!(f, "    m.insert(\"{}\".to_string(), {});", k, v).unwrap();
+    }
+    writeln!(f, "    m").unwrap();
+    writeln!(f, "}}").unwrap();
+}
+
+fn read_file(path: &str) -> Vec<(String, String)> {
+    let mut src = {
+        let mut s = String::new();
+        let mut f = File::open(path).unwrap();
+        f.read_to_string(&mut s).unwrap();
+        s
+    };
+
+    let mut entries: Vec<(String, String)> = Vec::new();
+
+    while !src.is_empty() {
+        if src.starts_with("get_def(") {
+            src = src["get_def(".len()..].to_string();
+
+            // Look for the opening "
+            while !src.starts_with("\"") {
+                src = src[1..].to_string();
+            }
+            src = src[1..].to_string();
+
+            // Read the key until the closing "
+            let mut key = String::new();
+            while !src.starts_with("\"") {
+                key.push(src.chars().next().unwrap());
+                src = src[1..].to_string();
+            }
+            src = src[1..].to_string();
+
+            // Look for the ,
+            while !src.starts_with(",") {
+                src = src[1..].to_string();
+            }
+            src = src[1..].to_string();
+
+            // Look for the Color
+            while !src.starts_with("Color") {
+                src = src[1..].to_string();
+            }
+
+            // Wait for the ()'s to be mismatched, meaning we found the ) of the get_def()
+            let mut counter = 0;
+            let mut value = String::new();
+            loop {
+                value.push(src.chars().next().unwrap());
+                if src.starts_with("(") {
+                    counter += 1;
+                } else if src.starts_with(")") {
+                    counter -= 1;
+                    if counter == -1 {
+                        value.pop();
+                        entries.push((key, value));
+                        src = src[1..].to_string();
+                        break;
+                    }
+                } else if src.starts_with(",") && counter == 0 {
+                    value.pop();
+                    entries.push((key, value));
+                    src = src[1..].to_string();
+                    break;
+                }
+                src = src[1..].to_string();
+            }
+        } else {
+            src = src[1..].to_string();
+        }
+    }
+
+    entries
 }

editor/extract_colorscheme.py

@@ -1,81 +0,0 @@
-#!/usr/bin/python2
-
-import os
-import sys
-
-def run():
-    mapping = {}
-
-    for path, _, files in os.walk('src'):
-        for f in files:
-            if f.endswith('.rs') and f != 'colors.rs':
-                for k, v in read_file(os.path.join(path, f)):
-                    if k in mapping:
-                        raise ValueError('Color {} defined twice'.format(k))
-                    mapping[k] = v
-
-    with open(sys.argv[1], 'w') as f:
-        f.write('fn default_colors() -> HashMap<String, Color> {\n')
-        f.write('    let mut m = HashMap::new();\n')
-        for k in sorted(mapping.iterkeys()):
-            f.write('    m.insert("{}".to_string(), {});\n'.format(k, mapping[k]))
-        f.write('    m\n')
-        f.write('}\n')
-
-
-def read_file(filename):
-    entries = []
-    with open(filename, 'r') as f:
-        src = ''.join(f.readlines())
-        while src:
-            if src.startswith('get_def('):
-                src = src[len('get_def('):]
-
-                # Look for the opening "
-                while src[0] != '"':
-                    src = src[1:]
-                src = src[1:]
-
-                # Read the key until the closing "
-                key = ''
-                while src[0] != '"':
-                    key += src[0]
-                    src = src[1:]
-                src = src[1:]
-
-                # Look for the ,
-                while src[0] != ',':
-                    src = src[1:]
-                src = src[1:]
-
-                # Look for the Color
-                while not src.startswith('Color'):
-                    src = src[1:]
-
-                # Wait for the ()'s to be mismatched, meaning we found the ) of the get_def()
-                counter = 0
-                value = ''
-                while True:
-                    value += src[0]
-                    if src[0] == '(':
-                        counter += 1
-                    elif src[0] == ')':
-                        counter -= 1
-                        if counter == -1:
-                            value = value[:-1]
-                            entries.append((key, value))
-                            src = src[1:]
-                            break
-                    elif src[0] == ',' and counter == 0:
-                        value = value[:-1]
-                        entries.append((key, value))
-                        src = src[1:]
-                        break
-                    src = src[1:]
-            else:
-                src = src[1:]
-    return entries
-
-
-if __name__ == '__main__':
-    run()