hack: in libc-test/build.rs, copy src to src-hotfix and replace crate:: with ::

This is needed because ctest2 cannot parse `crate::` in paths

Author: eduardosm

.gitignore

@@ -2,3 +2,4 @@ target
 Cargo.lock
 *~
 style
+/src-hotfix

libc-test/Cargo.toml

@@ -19,6 +19,7 @@ libc = { path = "..", version = "1.0.0-alpha.1", default-features = false }
 cc = "1.0.83"
 # FIXME: Use fork ctest until the maintainer gets back.
 ctest2 = "0.4.3"
+regex = "1.11.1"
 
 [features]
 default = ["std"]

libc-test/build.rs

@@ -145,11 +145,36 @@ fn main() {
     // Avoid unnecessary re-building.
     println!("cargo:rerun-if-changed=build.rs");
 
+    if std::fs::exists("../src-hotfix").unwrap() {
+        std::fs::remove_dir_all("../src-hotfix").unwrap();
+    }
+
+    // ctest2 cannot parse `crate::` in paths, so replace them with `::`
+    let re = regex::bytes::Regex::new(r"(?-u:\b)crate::").unwrap();
+    copy_dir_hotfix(Path::new("../src"), Path::new("../src-hotfix"), &re, b"::");
+
     do_cc();
     do_ctest();
     do_semver();
 }
 
+fn copy_dir_hotfix(src: &Path, dst: &Path, regex: &regex::bytes::Regex, replace: &[u8]) {
+    std::fs::create_dir(&dst).unwrap();
+    for entry in src.read_dir().unwrap() {
+        let entry = entry.unwrap();
+        let src_path = entry.path();
+        let dst_path = dst.join(entry.file_name());
+        if entry.file_type().unwrap().is_dir() {
+            copy_dir_hotfix(&src_path, &dst_path, regex, replace);
+        } else {
+            // Replace "crate::" with "::"
+            let src_data = std::fs::read(&src_path).unwrap();
+            let dst_data = regex.replace_all(&src_data, b"::");
+            std::fs::write(&dst_path, &dst_data).unwrap();
+        }
+    }
+}
+
 macro_rules! headers {
     ($cfg:ident: [$m:expr]: $header:literal) => {
         if $m {
@@ -442,7 +467,7 @@ fn test_apple(target: &str) {
         "uuid_t" | "vol_capabilities_set_t" => true,
         _ => false,
     });
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_openbsd(target: &str) {
@@ -607,7 +632,7 @@ fn test_openbsd(target: &str) {
         }
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_windows(target: &str) {
@@ -729,7 +754,7 @@ fn test_windows(target: &str) {
 
     cfg.skip_fn(|_| false);
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_redox(target: &str) {
@@ -779,7 +804,7 @@ fn test_redox(target: &str) {
         "wchar.h",
     }
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_solarish(target: &str) {
@@ -1054,7 +1079,7 @@ fn test_solarish(target: &str) {
         }
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_netbsd(target: &str) {
@@ -1267,7 +1292,7 @@ fn test_netbsd(target: &str) {
         }
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_dragonflybsd(target: &str) {
@@ -1490,7 +1515,7 @@ fn test_dragonflybsd(target: &str) {
         (struct_ == "sigevent" && field == "sigev_notify_thread_id")
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_wasi(target: &str) {
@@ -1597,7 +1622,7 @@ fn test_wasi(target: &str) {
     // doesn't support sizeof.
     cfg.skip_field(|s, field| s == "dirent" && field == "d_name");
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_android(target: &str) {
@@ -2090,7 +2115,7 @@ fn test_android(target: &str) {
         }
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 
     test_linux_like_apis(target);
 }
@@ -2746,7 +2771,7 @@ fn test_freebsd(target: &str) {
         });
     }
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_emscripten(target: &str) {
@@ -2983,7 +3008,7 @@ fn test_emscripten(target: &str) {
         ].contains(&field))
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_neutrino(target: &str) {
@@ -3233,7 +3258,7 @@ fn test_neutrino(target: &str) {
 
     cfg.skip_static(move |name| (name == "__dso_handle"));
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_vxworks(target: &str) {
@@ -3341,7 +3366,7 @@ fn test_vxworks(target: &str) {
         _ => false,
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }
 
 fn test_linux(target: &str) {
@@ -4462,7 +4487,7 @@ fn test_linux(target: &str) {
         _ => false,
     });
 
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 
     test_linux_like_apis(target);
 }
@@ -4489,7 +4514,7 @@ fn test_linux_like_apis(target: &str) {
         })
         .skip_const(|_| true)
         .skip_struct(|_| true);
-        cfg.generate("../src/lib.rs", "linux_strerror_r.rs");
+        cfg.generate("../src-hotfix/lib.rs", "linux_strerror_r.rs");
     }
 
     if linux || android || emscripten {
@@ -4519,7 +4544,7 @@ fn test_linux_like_apis(target: &str) {
                 t => t.to_string(),
             });
 
-        cfg.generate("../src/lib.rs", "linux_fcntl.rs");
+        cfg.generate("../src-hotfix/lib.rs", "linux_fcntl.rs");
     }
 
     if linux || android {
@@ -4543,7 +4568,7 @@ fn test_linux_like_apis(target: &str) {
                 t if is_union => format!("union {}", t),
                 t => t.to_string(),
             });
-        cfg.generate("../src/lib.rs", "linux_termios.rs");
+        cfg.generate("../src-hotfix/lib.rs", "linux_termios.rs");
     }
 
     if linux || android {
@@ -4571,7 +4596,7 @@ fn test_linux_like_apis(target: &str) {
                 t if is_union => format!("union {}", t),
                 t => t.to_string(),
             });
-        cfg.generate("../src/lib.rs", "linux_ipv6.rs");
+        cfg.generate("../src-hotfix/lib.rs", "linux_ipv6.rs");
     }
 
     if linux || android {
@@ -4593,7 +4618,7 @@ fn test_linux_like_apis(target: &str) {
                 "Elf64_Phdr" | "Elf32_Phdr" => false,
                 _ => true,
             });
-        cfg.generate("../src/lib.rs", "linux_elf.rs");
+        cfg.generate("../src-hotfix/lib.rs", "linux_elf.rs");
     }
 
     if linux || android {
@@ -4608,7 +4633,7 @@ fn test_linux_like_apis(target: &str) {
             })
             .skip_struct(|_| true)
             .skip_type(|_| true);
-        cfg.generate("../src/lib.rs", "linux_if_arp.rs");
+        cfg.generate("../src-hotfix/lib.rs", "linux_if_arp.rs");
     }
 }
 
@@ -4964,5 +4989,5 @@ fn test_haiku(target: &str) {
             s => s.to_string(),
         }
     });
-    cfg.generate("../src/lib.rs", "main.rs");
+    cfg.generate("../src-hotfix/lib.rs", "main.rs");
 }