refactor: modularize build core engine, update workspaces, cache, and test suite

src/core/build/cache.rs

@@ -0,0 +1,254 @@
+// DCR — Cargo-like C/C++ project manager.
+//
+// Copyright (C) 2026 Dexoron (Bezotechestvo Vladimir) <main@dexoron.su>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use crate::core::build::builder::BuildContext;
+use crate::core::build::common;
+use sha2::{Digest, Sha256};
+use std::fs;
+use std::path::{Path, PathBuf};
+
+pub(crate) fn compute_build_fingerprint(
+    ctx: &BuildContext,
+    sources: &[String],
+    headers: &[PathBuf],
+    lib_files: &[PathBuf],
+) -> Result<String, String> {
+    let mut hasher = Sha256::new();
+    hasher.update(ctx.profile.as_bytes());
+    hasher.update(ctx.project_name.as_bytes());
+    hasher.update(ctx.compiler.as_bytes());
+    hasher.update(ctx.language.as_bytes());
+    hasher.update(ctx.standard.as_bytes());
+    hasher.update(ctx.kind.as_bytes());
+    if let Some(v) = ctx.target_dir {
+        hasher.update(v.as_bytes());
+    }
+    if let Some(v) = ctx.platform {
+        hasher.update(v.as_bytes());
+    }
+    if let Some(v) = ctx.linker {
+        hasher.update(v.as_bytes());
+    }
+    if let Some(v) = ctx.archiver {
+        hasher.update(v.as_bytes());
+    }
+    for value in ctx.include_dirs {
+        hasher.update(value.as_bytes());
+    }
+    for value in ctx.lib_dirs {
+        hasher.update(value.as_bytes());
+    }
+    for value in ctx.libs {
+        hasher.update(value.as_bytes());
+    }
+    for value in ctx.cflags {
+        hasher.update(value.as_bytes());
+    }
+    for value in ctx.ldflags {
+        hasher.update(value.as_bytes());
+    }
+    let toml =
+        fs::read_to_string("dcr.toml").map_err(|err| format!("Failed to read dcr.toml: {err}"))?;
+    hasher.update(toml.as_bytes());
+    if let Ok(lock) = fs::read_to_string("dcr.lock") {
+        hasher.update(lock.as_bytes());
+    }
+    for source in sources {
+        let path = Path::new(source);
+        update_hasher_with_file(&mut hasher, path)?;
+    }
+    for header in headers {
+        update_hasher_with_file(&mut hasher, header)?;
+    }
+    for lib in lib_files {
+        update_hasher_with_file(&mut hasher, lib)?;
+    }
+    Ok(to_hex(&hasher.finalize()))
+}
+
+pub(crate) fn should_skip_build(ctx: &BuildContext, fingerprint: &str) -> bool {
+    let output = build_output_path(ctx);
+    if !Path::new(&output).is_file() {
+        return false;
+    }
+    let cache_path = build_cache_path(ctx.profile, ctx.target_dir);
+    let cached = fs::read_to_string(cache_path).unwrap_or_default();
+    cached.trim() == fingerprint
+}
+
+pub(crate) fn write_build_fingerprint(ctx: &BuildContext, fingerprint: &str) -> Result<(), String> {
+    let cache_path = build_cache_path(ctx.profile, ctx.target_dir);
+    if let Some(parent) = cache_path.parent() {
+        fs::create_dir_all(parent).map_err(|err| format!("Failed to create cache dir: {err}"))?;
+    }
+    fs::write(cache_path, format!("{fingerprint}\n"))
+        .map_err(|err| format!("Failed to write cache: {err}"))
+}
+
+fn build_cache_path(profile: &str, target_dir: Option<&str>) -> PathBuf {
+    match target_dir {
+        Some(dir) => Path::new(dir).join(".dcr-build.hash"),
+        None => Path::new("./target").join(profile).join(".dcr-build.hash"),
+    }
+}
+
+fn build_output_path(ctx: &BuildContext) -> String {
+    let name = ctx.output_filename.unwrap_or(ctx.project_name);
+    let ext = ctx.output_extension.unwrap_or("");
+
+    let final_name = if ext.is_empty() {
+        name.to_string()
+    } else {
+        format!("{}.{}", name, ext)
+    };
+
+    if ctx.kind == "staticlib" {
+        return crate::platform::lib_path(ctx.profile, &final_name, ctx.target_dir);
+    }
+    if ctx.kind == "sharedlib" {
+        return crate::platform::shared_lib_path(ctx.profile, &final_name, ctx.target_dir);
+    }
+    if ctx.kind == "efi" {
+        return crate::platform::efi_path(ctx.profile, &final_name, ctx.target_dir);
+    }
+    if ctx.kind == "elf" {
+        return crate::platform::elf_path(ctx.profile, &final_name, ctx.target_dir);
+    }
+    crate::platform::bin_path(ctx.profile, &final_name, ctx.target_dir)
+}
+
+pub(crate) fn collect_header_files(
+    ctx: &BuildContext,
+    project_root: &Path,
+) -> Result<Vec<PathBuf>, String> {
+    let mut out = Vec::new();
+    let mut roots = Vec::new();
+    if ctx.source_roots.is_empty() {
+        roots.push(project_root.join("src"));
+    } else {
+        roots.extend(ctx.source_roots.iter().cloned());
+    }
+    let abs_root = project_root
+        .canonicalize()
+        .unwrap_or_else(|_| project_root.to_path_buf());
+    for dir in ctx.include_dirs {
+        let p = Path::new(dir).to_path_buf();
+        if let Ok(abs_p) = p.canonicalize() {
+            if abs_p.starts_with(&abs_root) {
+                roots.push(abs_p);
+            }
+        } else if p.starts_with(&abs_root) {
+            roots.push(p);
+        }
+    }
+    for root in roots {
+        if !root.exists() {
+            continue;
+        }
+        collect_header_files_rec(&root, &mut out, ctx.exclude_dirs, ctx.include_paths)?;
+    }
+    out.sort();
+    out.dedup();
+    Ok(out)
+}
+
+fn collect_header_files_rec(
+    dir: &Path,
+    out: &mut Vec<PathBuf>,
+    exclude_dirs: &[PathBuf],
+    include_paths: &[String],
+) -> Result<(), String> {
+    if common::is_excluded(dir, exclude_dirs, include_paths) && include_paths.is_empty() {
+        return Ok(());
+    }
+    for entry in fs::read_dir(dir).map_err(|err| format!("read_dir error: {err}"))? {
+        let entry = entry.map_err(|err| format!("read_dir error: {err}"))?;
+        let path = entry.path();
+        if path.is_dir() {
+            if common::is_excluded(&path, exclude_dirs, include_paths) && include_paths.is_empty() {
+                continue;
+            }
+            collect_header_files_rec(&path, out, exclude_dirs, include_paths)?;
+            continue;
+        }
+        if !path.is_file() {
+            continue;
+        }
+        if common::is_excluded(&path, exclude_dirs, include_paths) {
+            continue;
+        }
+        if is_header_file(&path) {
+            out.push(path);
+        }
+    }
+    Ok(())
+}
+
+fn is_header_file(path: &Path) -> bool {
+    let ext = path.extension().and_then(|v| v.to_str()).unwrap_or("");
+    matches!(ext, "h" | "hpp" | "hh" | "hxx" | "inc")
+}
+
+pub(crate) fn collect_lib_files(ctx: &BuildContext) -> Vec<PathBuf> {
+    let mut out = Vec::new();
+    for dir in ctx.lib_dirs {
+        let dir_path = Path::new(dir);
+        for lib in ctx.libs {
+            for candidate in lib_candidates(lib) {
+                let path = dir_path.join(candidate);
+                if path.is_file() {
+                    out.push(path);
+                }
+            }
+        }
+    }
+    out
+}
+
+fn lib_candidates(name: &str) -> Vec<String> {
+    if cfg!(target_os = "windows") {
+        return vec![format!("{name}.lib")];
+    }
+    if cfg!(target_os = "macos") {
+        return vec![
+            format!("lib{name}.a"),
+            format!("lib{name}.dylib"),
+            format!("lib{name}.so"),
+        ];
+    }
+    vec![
+        format!("lib{name}.a"),
+        format!("lib{name}.so"),
+        format!("lib{name}.so.0"),
+    ]
+}
+
+fn update_hasher_with_file(hasher: &mut Sha256, path: &Path) -> Result<(), String> {
+    hasher.update(path.to_string_lossy().as_bytes());
+    let meta = fs::metadata(path).map_err(|err| format!("source read error: {err}"))?;
+    hasher.update(meta.len().to_le_bytes());
+    if let Ok(modified) = meta.modified()
+        && let Ok(duration) = modified.duration_since(std::time::UNIX_EPOCH)
+    {
+        hasher.update(duration.as_nanos().to_le_bytes());
+    }
+    Ok(())
+}
+
+fn to_hex(bytes: &[u8]) -> String {
+    crate::utils::fs::to_hex(bytes)
+}