henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2004--2005, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifdef WIN32 |
| 29 | #include "talk/base/win32.h" |
| 30 | #include <shellapi.h> |
| 31 | #include <shlobj.h> |
| 32 | #include <tchar.h> |
| 33 | #endif // WIN32 |
| 34 | |
| 35 | #include "talk/base/common.h" |
| 36 | #include "talk/base/fileutils.h" |
| 37 | #include "talk/base/logging.h" |
| 38 | #include "talk/base/pathutils.h" |
| 39 | #include "talk/base/stringutils.h" |
| 40 | #include "talk/base/urlencode.h" |
| 41 | |
| 42 | namespace talk_base { |
| 43 | |
| 44 | static const char EMPTY_STR[] = ""; |
| 45 | |
| 46 | // EXT_DELIM separates a file basename from extension |
| 47 | const char EXT_DELIM = '.'; |
| 48 | |
| 49 | // FOLDER_DELIMS separate folder segments and the filename |
| 50 | const char* const FOLDER_DELIMS = "/\\"; |
| 51 | |
| 52 | // DEFAULT_FOLDER_DELIM is the preferred delimiter for this platform |
| 53 | #if WIN32 |
| 54 | const char DEFAULT_FOLDER_DELIM = '\\'; |
| 55 | #else // !WIN32 |
| 56 | const char DEFAULT_FOLDER_DELIM = '/'; |
| 57 | #endif // !WIN32 |
| 58 | |
| 59 | /////////////////////////////////////////////////////////////////////////////// |
| 60 | // Pathname - parsing of pathnames into components, and vice versa |
| 61 | /////////////////////////////////////////////////////////////////////////////// |
| 62 | |
| 63 | bool Pathname::IsFolderDelimiter(char ch) { |
| 64 | return (NULL != ::strchr(FOLDER_DELIMS, ch)); |
| 65 | } |
| 66 | |
| 67 | char Pathname::DefaultFolderDelimiter() { |
| 68 | return DEFAULT_FOLDER_DELIM; |
| 69 | } |
| 70 | |
| 71 | Pathname::Pathname() |
| 72 | : folder_delimiter_(DEFAULT_FOLDER_DELIM) { |
| 73 | } |
| 74 | |
| 75 | Pathname::Pathname(const std::string& pathname) |
| 76 | : folder_delimiter_(DEFAULT_FOLDER_DELIM) { |
| 77 | SetPathname(pathname); |
| 78 | } |
| 79 | |
| 80 | Pathname::Pathname(const std::string& folder, const std::string& filename) |
| 81 | : folder_delimiter_(DEFAULT_FOLDER_DELIM) { |
| 82 | SetPathname(folder, filename); |
| 83 | } |
| 84 | |
| 85 | void Pathname::SetFolderDelimiter(char delimiter) { |
| 86 | ASSERT(IsFolderDelimiter(delimiter)); |
| 87 | folder_delimiter_ = delimiter; |
| 88 | } |
| 89 | |
| 90 | void Pathname::Normalize() { |
| 91 | for (size_t i=0; i<folder_.length(); ++i) { |
| 92 | if (IsFolderDelimiter(folder_[i])) { |
| 93 | folder_[i] = folder_delimiter_; |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | void Pathname::clear() { |
| 99 | folder_.clear(); |
| 100 | basename_.clear(); |
| 101 | extension_.clear(); |
| 102 | } |
| 103 | |
| 104 | bool Pathname::empty() const { |
| 105 | return folder_.empty() && basename_.empty() && extension_.empty(); |
| 106 | } |
| 107 | |
| 108 | std::string Pathname::pathname() const { |
| 109 | std::string pathname(folder_); |
| 110 | pathname.append(basename_); |
| 111 | pathname.append(extension_); |
| 112 | if (pathname.empty()) { |
| 113 | // Instead of the empty pathname, return the current working directory. |
| 114 | pathname.push_back('.'); |
| 115 | pathname.push_back(folder_delimiter_); |
| 116 | } |
| 117 | return pathname; |
| 118 | } |
| 119 | |
| 120 | std::string Pathname::url() const { |
| 121 | std::string s = "file:///"; |
| 122 | for (size_t i=0; i<folder_.length(); ++i) { |
| 123 | if (IsFolderDelimiter(folder_[i])) |
| 124 | s += '/'; |
| 125 | else |
| 126 | s += folder_[i]; |
| 127 | } |
| 128 | s += basename_; |
| 129 | s += extension_; |
| 130 | return UrlEncodeStringForOnlyUnsafeChars(s); |
| 131 | } |
| 132 | |
| 133 | void Pathname::SetPathname(const std::string& pathname) { |
| 134 | std::string::size_type pos = pathname.find_last_of(FOLDER_DELIMS); |
| 135 | if (pos != std::string::npos) { |
| 136 | SetFolder(pathname.substr(0, pos + 1)); |
| 137 | SetFilename(pathname.substr(pos + 1)); |
| 138 | } else { |
| 139 | SetFolder(EMPTY_STR); |
| 140 | SetFilename(pathname); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | void Pathname::SetPathname(const std::string& folder, |
| 145 | const std::string& filename) { |
| 146 | SetFolder(folder); |
| 147 | SetFilename(filename); |
| 148 | } |
| 149 | |
| 150 | void Pathname::AppendPathname(const std::string& pathname) { |
| 151 | std::string full_pathname(folder_); |
| 152 | full_pathname.append(pathname); |
| 153 | SetPathname(full_pathname); |
| 154 | } |
| 155 | |
| 156 | std::string Pathname::folder() const { |
| 157 | return folder_; |
| 158 | } |
| 159 | |
| 160 | std::string Pathname::folder_name() const { |
| 161 | std::string::size_type pos = std::string::npos; |
| 162 | if (folder_.size() >= 2) { |
| 163 | pos = folder_.find_last_of(FOLDER_DELIMS, folder_.length() - 2); |
| 164 | } |
| 165 | if (pos != std::string::npos) { |
| 166 | return folder_.substr(pos + 1); |
| 167 | } else { |
| 168 | return folder_; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | std::string Pathname::parent_folder() const { |
| 173 | std::string::size_type pos = std::string::npos; |
| 174 | if (folder_.size() >= 2) { |
| 175 | pos = folder_.find_last_of(FOLDER_DELIMS, folder_.length() - 2); |
| 176 | } |
| 177 | if (pos != std::string::npos) { |
| 178 | return folder_.substr(0, pos + 1); |
| 179 | } else { |
| 180 | return EMPTY_STR; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | void Pathname::SetFolder(const std::string& folder) { |
| 185 | folder_.assign(folder); |
| 186 | // Ensure folder ends in a path delimiter |
| 187 | if (!folder_.empty() && !IsFolderDelimiter(folder_[folder_.length()-1])) { |
| 188 | folder_.push_back(folder_delimiter_); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | void Pathname::AppendFolder(const std::string& folder) { |
| 193 | folder_.append(folder); |
| 194 | // Ensure folder ends in a path delimiter |
| 195 | if (!folder_.empty() && !IsFolderDelimiter(folder_[folder_.length()-1])) { |
| 196 | folder_.push_back(folder_delimiter_); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | std::string Pathname::basename() const { |
| 201 | return basename_; |
| 202 | } |
| 203 | |
| 204 | bool Pathname::SetBasename(const std::string& basename) { |
| 205 | if(basename.find_first_of(FOLDER_DELIMS) != std::string::npos) { |
| 206 | return false; |
| 207 | } |
| 208 | basename_.assign(basename); |
| 209 | return true; |
| 210 | } |
| 211 | |
| 212 | std::string Pathname::extension() const { |
| 213 | return extension_; |
| 214 | } |
| 215 | |
| 216 | bool Pathname::SetExtension(const std::string& extension) { |
| 217 | if (extension.find_first_of(FOLDER_DELIMS) != std::string::npos || |
| 218 | extension.find_first_of(EXT_DELIM, 1) != std::string::npos) { |
| 219 | return false; |
| 220 | } |
| 221 | extension_.assign(extension); |
| 222 | // Ensure extension begins with the extension delimiter |
| 223 | if (!extension_.empty() && (extension_[0] != EXT_DELIM)) { |
| 224 | extension_.insert(extension_.begin(), EXT_DELIM); |
| 225 | } |
| 226 | return true; |
| 227 | } |
| 228 | |
| 229 | std::string Pathname::filename() const { |
| 230 | std::string filename(basename_); |
| 231 | filename.append(extension_); |
| 232 | return filename; |
| 233 | } |
| 234 | |
| 235 | bool Pathname::SetFilename(const std::string& filename) { |
| 236 | std::string::size_type pos = filename.rfind(EXT_DELIM); |
| 237 | if ((pos == std::string::npos) || (pos == 0)) { |
| 238 | return SetExtension(EMPTY_STR) && SetBasename(filename); |
| 239 | } else { |
| 240 | return SetExtension(filename.substr(pos)) && SetBasename(filename.substr(0, pos)); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | #ifdef WIN32 |
| 245 | bool Pathname::GetDrive(char *drive, uint32 bytes) const { |
| 246 | return GetDrive(drive, bytes, folder_); |
| 247 | } |
| 248 | |
| 249 | // static |
| 250 | bool Pathname::GetDrive(char *drive, uint32 bytes, |
| 251 | const std::string& pathname) { |
| 252 | // need at lease 4 bytes to save c: |
| 253 | if (bytes < 4 || pathname.size() < 3) { |
| 254 | return false; |
| 255 | } |
| 256 | |
| 257 | memcpy(drive, pathname.c_str(), 3); |
| 258 | drive[3] = 0; |
| 259 | // sanity checking |
| 260 | return (isalpha(drive[0]) && |
| 261 | drive[1] == ':' && |
| 262 | drive[2] == '\\'); |
| 263 | } |
| 264 | #endif |
| 265 | |
| 266 | /////////////////////////////////////////////////////////////////////////////// |
| 267 | |
| 268 | } // namespace talk_base |