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versioner: copy unmodified headers when preprocessing.

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Change-Id: I2517f560fd44fb519d6ee7e8d0a485036d3ecd87
This commit is contained in:
Josh Gao 2016-08-12 16:17:22 -07:00
parent 9519fc08b7
commit 79786347db
1 changed files with 33 additions and 0 deletions
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33
tools/versioner/src/Preprocessor.cpp
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@ -18,6 +18,7 @@
#include <err.h>
#include <fcntl.h>
#include <fts.h>
#include <libgen.h>
#include <string.h>
#include <sys/stat.h>
@ -31,6 +32,8 @@
#include <llvm/ADT/StringRef.h>
#include <llvm/ADT/Twine.h>
#include <llvm/Support/FileSystem.h>
#include <llvm/Support/Path.h>
#include "Arch.h"
#include "DeclarationDatabase.h"
@ -456,6 +459,36 @@ bool preprocessHeaders(const std::string& dst_dir, const std::string& src_dir,
}
}
// Copy over any unchanged files directly.
char* fts_paths[2] = { const_cast<char*>(src_dir.c_str()), nullptr };
FTS* fts = fts_open(fts_paths, FTS_LOGICAL, nullptr);
while (FTSENT* ent = fts_read(fts)) {
llvm::StringRef path = ent->fts_path;
if (!path.startswith(src_dir)) {
err(1, "path '%s' doesn't start with source dir '%s'", ent->fts_path, src_dir.c_str());
}
if (ent->fts_info != FTS_F) {
continue;
}
std::string rel_path = path.substr(src_dir.length() + 1);
if (guards.count(rel_path) == 0) {
std::string dst_path = dst_dir + "/" + rel_path;
llvm::StringRef parent_path = llvm::sys::path::parent_path(dst_path);
if (llvm::sys::fs::create_directories(parent_path)) {
errx(1, "failed to ensure existence of directory '%s'", parent_path.str().c_str());
}
if (llvm::sys::fs::copy_file(path, dst_path)) {
errx(1, "failed to copy '%s/%s' to '%s'", src_dir.c_str(), path.str().c_str(),
dst_path.c_str());
}
printf("Copied unmodified header %s\n", dst_path.c_str());
}
}
fts_close(fts);
for (const auto& file_it : guards) {
file_lines[file_it.first] = readFileLines(file_it.first);
}