license.bot | f003cfe | 2008-08-24 09:55:55 +0900 | [diff] [blame^] | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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| 2 | // Use of this source code is governed by a BSD-style license that can be
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| 3 | // found in the LICENSE file.
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| 4 |
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| 5 | #include "base/file_util.h"
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| 6 |
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| 7 | #include <fcntl.h>
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| 8 | #include <fnmatch.h>
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| 9 | #include <fts.h>
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| 10 | #include <libgen.h>
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| 11 | #include <sys/errno.h>
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| 12 | #include <sys/stat.h>
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| 13 | #include <sys/syslimits.h>
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| 14 | #include <time.h>
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| 15 |
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| 16 | #include <fstream>
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| 17 |
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| 18 | #include "base/basictypes.h"
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| 19 | #include "base/logging.h"
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| 20 | #include "base/string_util.h"
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| 21 |
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| 22 | namespace file_util {
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| 23 |
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| 24 | std::wstring GetDirectoryFromPath(const std::wstring& path) {
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| 25 | if (EndsWithSeparator(path)) {
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| 26 | std::wstring dir = path;
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| 27 | TrimTrailingSeparator(&dir);
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| 28 | return dir;
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| 29 | } else {
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| 30 | char full_path[PATH_MAX];
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| 31 | base::strlcpy(full_path, WideToUTF8(path).c_str(), arraysize(full_path));
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| 32 | return UTF8ToWide(dirname(full_path));
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| 33 | }
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| 34 | }
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| 35 |
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| 36 | bool AbsolutePath(std::wstring* path) {
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| 37 | char full_path[PATH_MAX];
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| 38 | if (realpath(WideToUTF8(*path).c_str(), full_path) == NULL)
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| 39 | return false;
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| 40 | *path = UTF8ToWide(full_path);
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| 41 | return true;
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| 42 | }
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| 43 |
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| 44 | // TODO(erikkay): The Windows version of this accepts paths like "foo/bar/*"
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| 45 | // which works both with and without the recursive flag. I'm not sure we need
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| 46 | // that functionality. If not, remove from file_util_win.cc, otherwise add it
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| 47 | // here.
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| 48 | bool Delete(const std::wstring& path, bool recursive) {
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| 49 | const char* utf8_path = WideToUTF8(path).c_str();
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| 50 | struct stat64 file_info;
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| 51 | int test = stat64(utf8_path, &file_info);
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| 52 | if (test != 0) {
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| 53 | // The Windows version defines this condition as success.
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| 54 | bool ret = (errno == ENOENT || errno == ENOTDIR);
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| 55 | return ret;
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| 56 | }
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| 57 | if (!S_ISDIR(file_info.st_mode))
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| 58 | return (unlink(utf8_path) == 0);
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| 59 | if (!recursive)
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| 60 | return (rmdir(utf8_path) == 0);
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| 61 |
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| 62 | bool success = true;
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| 63 | int ftsflags = FTS_PHYSICAL | FTS_NOSTAT;
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| 64 | char top_dir[PATH_MAX];
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| 65 | base::strlcpy(top_dir, utf8_path, sizeof(top_dir));
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| 66 | char* dir_list[2] = { top_dir, NULL };
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| 67 | FTS* fts = fts_open(dir_list, ftsflags, NULL);
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| 68 | if (fts) {
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| 69 | FTSENT* fts_ent = fts_read(fts);
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| 70 | while (success && fts_ent != NULL) {
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| 71 | switch (fts_ent->fts_info) {
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| 72 | case FTS_DNR:
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| 73 | case FTS_ERR:
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| 74 | // log error
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| 75 | success = false;
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| 76 | continue;
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| 77 | break;
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| 78 | case FTS_DP:
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| 79 | rmdir(fts_ent->fts_accpath);
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| 80 | break;
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| 81 | case FTS_D:
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| 82 | break;
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| 83 | case FTS_NSOK:
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| 84 | case FTS_F:
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| 85 | case FTS_SL:
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| 86 | case FTS_SLNONE:
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| 87 | unlink(fts_ent->fts_accpath);
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| 88 | break;
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| 89 | default:
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| 90 | DCHECK(false);
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| 91 | break;
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| 92 | }
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| 93 | fts_ent = fts_read(fts);
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| 94 | }
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| 95 | fts_close(fts);
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| 96 | }
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| 97 | return success;
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| 98 | }
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| 99 |
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| 100 | bool Move(const std::wstring& from_path, const std::wstring& to_path) {
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| 101 | return (rename(WideToUTF8(from_path).c_str(),
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| 102 | WideToUTF8(to_path).c_str()) == 0);
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| 103 | }
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| 104 |
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| 105 | bool CopyTree(const std::wstring& from_path, const std::wstring& to_path) {
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| 106 | // TODO(erikkay): implement
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| 107 | return false;
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| 108 | }
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| 109 |
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| 110 | bool PathExists(const std::wstring& path) {
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| 111 | struct stat64 file_info;
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| 112 | return (stat64(WideToUTF8(path).c_str(), &file_info) == 0);
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| 113 | }
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| 114 |
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| 115 | // TODO(erikkay): implement
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| 116 | #if 0
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| 117 | bool GetFileCreationLocalTimeFromHandle(int fd,
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| 118 | LPSYSTEMTIME creation_time) {
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| 119 | if (!file_handle)
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| 120 | return false;
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| 121 |
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| 122 | FILETIME utc_filetime;
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| 123 | if (!GetFileTime(file_handle, &utc_filetime, NULL, NULL))
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| 124 | return false;
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| 125 |
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| 126 | FILETIME local_filetime;
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| 127 | if (!FileTimeToLocalFileTime(&utc_filetime, &local_filetime))
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| 128 | return false;
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| 129 |
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| 130 | return !!FileTimeToSystemTime(&local_filetime, creation_time);
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| 131 | }
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| 132 |
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| 133 | bool GetFileCreationLocalTime(const std::string& filename,
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| 134 | LPSYSTEMTIME creation_time) {
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| 135 | ScopedHandle file_handle(
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| 136 | CreateFile(filename.c_str(), GENERIC_READ,
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| 137 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
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| 138 | OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL));
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| 139 | return GetFileCreationLocalTimeFromHandle(file_handle.Get(), creation_time);
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| 140 | }
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| 141 | #endif
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| 142 |
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| 143 | bool CreateTemporaryFileName(std::wstring* temp_file) {
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| 144 | std::wstring tmpdir;
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| 145 | if (!GetTempDir(&tmpdir))
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| 146 | return false;
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| 147 | tmpdir.append(L"com.google.chrome.XXXXXX");
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| 148 | // this should be OK since mktemp just replaces characters in place
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| 149 | char* buffer = const_cast<char*>(WideToUTF8(tmpdir).c_str());
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| 150 | *temp_file = UTF8ToWide(mktemp(buffer));
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| 151 | int fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
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| 152 | if (fd < 0)
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| 153 | return false;
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| 154 | close(fd);
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| 155 | return true;
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| 156 | }
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| 157 |
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| 158 | bool CreateNewTempDirectory(const std::wstring& prefix,
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| 159 | std::wstring* new_temp_path) {
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| 160 | std::wstring tmpdir;
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| 161 | if (!GetTempDir(&tmpdir))
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| 162 | return false;
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| 163 | tmpdir.append(L"/com.google.chrome.XXXXXX");
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| 164 | // this should be OK since mkdtemp just replaces characters in place
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| 165 | char* buffer = const_cast<char*>(WideToUTF8(tmpdir).c_str());
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| 166 | char* dtemp = mkdtemp(buffer);
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| 167 | if (!dtemp)
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| 168 | return false;
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| 169 | *new_temp_path = UTF8ToWide(dtemp);
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| 170 | return true;
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| 171 | }
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| 172 |
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| 173 | bool CreateDirectory(const std::wstring& full_path) {
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| 174 | std::vector<std::wstring> components;
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| 175 | PathComponents(full_path, &components);
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| 176 | std::wstring path;
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| 177 | std::vector<std::wstring>::iterator i = components.begin();
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| 178 | for (; i != components.end(); ++i) {
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| 179 | if (path.length() == 0)
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| 180 | path = *i;
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| 181 | else
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| 182 | AppendToPath(&path, *i);
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| 183 | if (!PathExists(path)) {
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| 184 | if (mkdir(WideToUTF8(path).c_str(), 0777) != 0)
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| 185 | return false;
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| 186 | }
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| 187 | }
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| 188 | return true;
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| 189 | }
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| 190 |
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| 191 | bool GetFileSize(const std::wstring& file_path, int64* file_size) {
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| 192 | struct stat64 file_info;
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| 193 | if (stat64(WideToUTF8(file_path).c_str(), &file_info) != 0)
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| 194 | return false;
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| 195 | *file_size = file_info.st_size;
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| 196 | return true;
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| 197 | }
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| 198 |
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| 199 | int ReadFile(const std::wstring& filename, char* data, int size) {
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| 200 | int fd = open(WideToUTF8(filename).c_str(), O_RDONLY);
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| 201 | if (fd < 0)
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| 202 | return -1;
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| 203 |
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| 204 | int ret_value = read(fd, data, size);
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| 205 | close(fd);
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| 206 | return ret_value;
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| 207 | }
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| 208 |
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| 209 | int WriteFile(const std::wstring& filename, const char* data, int size) {
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| 210 | int fd = open(WideToUTF8(filename).c_str(), O_WRONLY | O_CREAT | O_TRUNC,
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| 211 | 0666);
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| 212 | if (fd < 0)
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| 213 | return -1;
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| 214 |
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| 215 | int ret_value = write(fd, data, size);
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| 216 | close(fd);
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| 217 | return ret_value;
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| 218 | }
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| 219 |
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| 220 | // Gets the current working directory for the process.
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| 221 | bool GetCurrentDirectory(std::wstring* dir) {
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| 222 | char system_buffer[PATH_MAX] = "";
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| 223 | getcwd(system_buffer, sizeof(system_buffer));
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| 224 | *dir = UTF8ToWide(system_buffer);
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| 225 | return true;
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| 226 | }
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| 227 |
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| 228 | // Sets the current working directory for the process.
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| 229 | bool SetCurrentDirectory(const std::wstring& current_directory) {
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| 230 | int ret = chdir(WideToUTF8(current_directory).c_str());
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| 231 | return (ret == 0);
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| 232 | }
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| 233 |
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| 234 | FileEnumerator::FileEnumerator(const std::wstring& root_path,
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| 235 | bool recursive,
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| 236 | FileEnumerator::FILE_TYPE file_type)
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| 237 | : recursive_(recursive),
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| 238 | file_type_(file_type),
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| 239 | is_in_find_op_(false),
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| 240 | fts_(NULL) {
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| 241 | pending_paths_.push(root_path);
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| 242 | }
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| 243 |
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| 244 | FileEnumerator::FileEnumerator(const std::wstring& root_path,
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| 245 | bool recursive,
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| 246 | FileEnumerator::FILE_TYPE file_type,
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| 247 | const std::wstring& pattern)
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| 248 | : recursive_(recursive),
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| 249 | file_type_(file_type),
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| 250 | pattern_(root_path),
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| 251 | is_in_find_op_(false),
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| 252 | fts_(NULL) {
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| 253 | // The Windows version of this code only matches against items in the top-most
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| 254 | // directory, and we're comparing fnmatch against full paths, so this is the
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| 255 | // easiest way to get the right pattern.
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| 256 | AppendToPath(&pattern_, pattern);
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| 257 | pending_paths_.push(root_path);
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| 258 | }
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| 259 |
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| 260 | FileEnumerator::~FileEnumerator() {
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| 261 | if (fts_)
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| 262 | fts_close(fts_);
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| 263 | }
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| 264 |
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| 265 | // As it stands, this method calls itself recursively when the next item of
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| 266 | // the fts enumeration doesn't match (type, pattern, etc.). In the case of
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| 267 | // large directories with many files this can be quite deep.
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| 268 | // TODO(erikkay) - get rid of this recursive pattern
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| 269 | std::wstring FileEnumerator::Next() {
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| 270 | if (!is_in_find_op_) {
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| 271 | if (pending_paths_.empty())
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| 272 | return std::wstring();
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| 273 |
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| 274 | // The last find FindFirstFile operation is done, prepare a new one.
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| 275 | root_path_ = pending_paths_.top();
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| 276 | TrimTrailingSeparator(&root_path_);
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| 277 | pending_paths_.pop();
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| 278 |
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| 279 | // Start a new find operation.
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| 280 | int ftsflags = FTS_LOGICAL;
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| 281 | char top_dir[PATH_MAX];
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| 282 | base::strlcpy(top_dir, WideToUTF8(root_path_).c_str(), sizeof(top_dir));
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| 283 | char* dir_list[2] = { top_dir, NULL };
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| 284 | fts_ = fts_open(dir_list, ftsflags, NULL);
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| 285 | if (!fts_)
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| 286 | return Next();
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| 287 | is_in_find_op_ = true;
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| 288 | }
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| 289 |
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| 290 | FTSENT* fts_ent = fts_read(fts_);
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| 291 | if (fts_ent == NULL) {
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| 292 | fts_close(fts_);
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| 293 | fts_ = NULL;
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| 294 | is_in_find_op_ = false;
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| 295 | return Next();
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| 296 | }
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| 297 |
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| 298 | // Level 0 is the top, which is always skipped.
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| 299 | if (fts_ent->fts_level == 0)
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| 300 | return Next();
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| 301 |
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| 302 | // Patterns are only matched on the items in the top-most directory.
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| 303 | // (see Windows implementation)
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| 304 | if (fts_ent->fts_level == 1 && pattern_.length() > 0) {
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| 305 | const char* utf8_pattern = WideToUTF8(pattern_).c_str();
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| 306 | if (fnmatch(utf8_pattern, fts_ent->fts_path, 0) != 0) {
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| 307 | if (fts_ent->fts_info == FTS_D)
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| 308 | fts_set(fts_, fts_ent, FTS_SKIP);
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| 309 | return Next();
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| 310 | }
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| 311 | }
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| 312 |
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| 313 | std::wstring cur_file(UTF8ToWide(fts_ent->fts_path));
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| 314 | if (fts_ent->fts_info == FTS_D) {
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| 315 | // If not recursive, then prune children.
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| 316 | if (!recursive_)
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| 317 | fts_set(fts_, fts_ent, FTS_SKIP);
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| 318 | return (file_type_ & FileEnumerator::DIRECTORIES) ? cur_file : Next();
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| 319 | } else if (fts_ent->fts_info == FTS_F) {
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| 320 | return (file_type_ & FileEnumerator::FILES) ? cur_file : Next();
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| 321 | }
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| 322 | // TODO(erikkay) - verify that the other fts_info types aren't interesting
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| 323 | return Next();
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| 324 | }
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| 325 |
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| 326 |
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| 327 | } // namespace file_util
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| 328 |
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| 329 |
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