Utils.cpp revision 3091f5a06e82186bbf8cfde3498fa9aef4d389ee 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "Utils.h"
18
19#include <err.h>
20#include <fts.h>
21#include <string.h>
22#include <unistd.h>
23
24#include <sstream>
25#include <string>
26#include <vector>
27
28#include <android-base/strings.h>
29
30#include "DeclarationDatabase.h"
31
32std::string getWorkingDir() {
33  char buf[PATH_MAX];
34  if (!getcwd(buf, sizeof(buf))) {
35    err(1, "getcwd failed");
36  }
37  return buf;
38}
39
40std::vector<std::string> collectHeaders(const std::string& directory) {
41  std::vector<std::string> headers;
42
43  char* dir_argv[2] = { const_cast<char*>(directory.c_str()), nullptr };
44  FTS* fts = fts_open(dir_argv, FTS_LOGICAL | FTS_NOCHDIR, nullptr);
45
46  if (!fts) {
47    err(1, "failed to open directory '%s'", directory.c_str());
48  }
49
50  FTSENT* ent;
51  while ((ent = fts_read(fts))) {
52    if (ent->fts_info & (FTS_D | FTS_DP)) {
53      continue;
54    }
55
56    if (!android::base::EndsWith(ent->fts_path, ".h")) {
57      continue;
58    }
59
60    headers.push_back(ent->fts_path);
61  }
62
63  fts_close(fts);
64  return headers;
65}
66
67llvm::StringRef StripPrefix(llvm::StringRef string, llvm::StringRef prefix) {
68  if (string.startswith(prefix)) {
69    return string.drop_front(prefix.size());
70  }
71  return string;
72}
73