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| Original file line number | Diff line number | Diff line change |
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| # Build directories | ||
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| cargo-mutants builds mutated code in a temporary directory, containing a copy of your source tree with each mutant successively applied. With `--jobs`, multiple build directories are used in parallel. | ||
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| ## Build-in ignores | ||
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| Files or directories matching these patterns are not copied: | ||
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| .git | ||
| .hg | ||
| .bzr | ||
| .svn | ||
| _darcs | ||
| .pijul | ||
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| ## gitignore | ||
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| From 23.11.2, by default, cargo-mutants will not copy files that are excluded by gitignore patterns, to make copying faster in large trees. | ||
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| This behavior can be turned off with `--gitignore=false`. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,130 @@ | ||
| // Copyright 2023 Martin Pool | ||
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| //! Copy a source tree, with some exclusions, to a new temporary directory. | ||
| use std::convert::TryInto; | ||
| use std::fs::FileType; | ||
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| use anyhow::Context; | ||
| use camino::{Utf8Path, Utf8PathBuf}; | ||
| use ignore::WalkBuilder; | ||
| use path_slash::PathExt; | ||
| use tempfile::TempDir; | ||
| use tracing::{debug, warn}; | ||
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| use crate::check_interrupted; | ||
| use crate::Console; | ||
| use crate::Result; | ||
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| /// Filenames excluded from being copied with the source. | ||
| static SOURCE_EXCLUDE: &[&str] = &[ | ||
| ".git", | ||
| ".hg", | ||
| ".bzr", | ||
| ".svn", | ||
| "_darcs", | ||
| ".pijul", | ||
| "mutants.out", | ||
| "mutants.out.old", | ||
| ]; | ||
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| /// Copy a source tree, with some exclusions, to a new temporary directory. | ||
| /// | ||
| /// If `git` is true, ignore files that are excluded by all the various `.gitignore` | ||
| /// files. | ||
| /// | ||
| /// Regardless, anything matching [SOURCE_EXCLUDE] is excluded. | ||
| pub fn copy_tree( | ||
| from_path: &Utf8Path, | ||
| name_base: &str, | ||
| gitignore: bool, | ||
| console: &Console, | ||
| ) -> Result<TempDir> { | ||
| console.start_copy(); | ||
| let mut total_bytes = 0; | ||
| let mut total_files = 0; | ||
| let temp_dir = tempfile::Builder::new() | ||
| .prefix(name_base) | ||
| .suffix(".tmp") | ||
| .tempdir() | ||
| .context("create temp dir")?; | ||
| for entry in WalkBuilder::new(from_path) | ||
| .standard_filters(gitignore) | ||
| .hidden(false) | ||
| .require_git(false) | ||
| .filter_entry(|entry| { | ||
| !SOURCE_EXCLUDE.contains(&entry.file_name().to_string_lossy().as_ref()) | ||
| }) | ||
| .build() | ||
| { | ||
| check_interrupted()?; | ||
| let entry = entry?; | ||
| let relative_path = entry | ||
| .path() | ||
| .strip_prefix(from_path) | ||
| .expect("entry path is in from_path"); | ||
| let dest_path: Utf8PathBuf = temp_dir | ||
| .path() | ||
| .join(relative_path) | ||
| .try_into() | ||
| .context("Convert path to UTF-8")?; | ||
| let ft = entry | ||
| .file_type() | ||
| .with_context(|| format!("Expected file to have a file type: {:?}", entry.path()))?; | ||
| if ft.is_file() { | ||
| let bytes_copied = std::fs::copy(entry.path(), &dest_path).with_context(|| { | ||
| format!( | ||
| "Failed to copy {:?} to {dest_path:?}", | ||
| entry.path().to_slash_lossy(), | ||
| ) | ||
| })?; | ||
| total_bytes += bytes_copied; | ||
| total_files += 1; | ||
| console.copy_progress(bytes_copied); | ||
| } else if ft.is_dir() { | ||
| std::fs::create_dir_all(&dest_path) | ||
| .with_context(|| format!("Failed to create directory {dest_path:?}"))?; | ||
| } else if ft.is_symlink() { | ||
| copy_symlink( | ||
| ft, | ||
| entry | ||
| .path() | ||
| .try_into() | ||
| .context("Convert filename to UTF-8")?, | ||
| &dest_path, | ||
| )?; | ||
| } else { | ||
| warn!("Unexpected file type: {:?}", entry.path()); | ||
| } | ||
| } | ||
| console.finish_copy(); | ||
| debug!(?total_bytes, ?total_files, "Copied source tree"); | ||
| Ok(temp_dir) | ||
| } | ||
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| #[cfg(unix)] | ||
| fn copy_symlink(_ft: FileType, src_path: &Utf8Path, dest_path: &Utf8Path) -> Result<()> { | ||
| let link_target = std::fs::read_link(src_path) | ||
| .with_context(|| format!("Failed to read link {src_path:?}"))?; | ||
| std::os::unix::fs::symlink(link_target, dest_path) | ||
| .with_context(|| format!("Failed to create symlink {dest_path:?}",))?; | ||
| Ok(()) | ||
| } | ||
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| #[cfg(windows)] | ||
| #[mutants::skip] // Mutant tests run on Linux | ||
| fn copy_symlink(ft: FileType, src_path: &Utf8Path, dest_path: &Utf8Path) -> Result<()> { | ||
| use std::os::windows::fs::FileTypeExt; | ||
| let link_target = | ||
| std::fs::read_link(src_path).with_context(|| format!("read link {src_path:?}"))?; | ||
| if ft.is_symlink_dir() { | ||
| std::os::windows::fs::symlink_dir(link_target, dest_path) | ||
| .with_context(|| format!("create symlink {dest_path:?}"))?; | ||
| } else if ft.is_symlink_file() { | ||
| std::os::windows::fs::symlink_file(link_target, dest_path) | ||
| .with_context(|| format!("create symlink {dest_path:?}"))?; | ||
| } else { | ||
| anyhow::bail!("Unknown symlink type: {:?}", ft); | ||
| } | ||
| Ok(()) | ||
| } |
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