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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.10/src/FileSystem.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.10/src/FileSystem.cpp | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.10/src/FileSystem.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.10/src/FileSystem.cpp new file mode 100644 index 00000000000..a0c93177ac8 --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-1.10/src/FileSystem.cpp @@ -0,0 +1,330 @@ +/************************************************************************* +** FileSystem.cpp ** +** ** +** This file is part of dvisvgm -- the DVI to SVG converter ** +** Copyright (C) 2005-2015 Martin Gieseking <martin.gieseking@uos.de> ** +** ** +** This program is free software; you can redistribute it and/or ** +** modify it under the terms of the GNU General Public License as ** +** published by the Free Software Foundation; either version 3 of ** +** the License, or (at your option) any later version. ** +** ** +** This program is distributed in the hope that it will be useful, but ** +** WITHOUT ANY WARRANTY; without even the implied warranty of ** +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** +** GNU General Public License for more details. ** +** ** +** You should have received a copy of the GNU General Public License ** +** along with this program; if not, see <http://www.gnu.org/licenses/>. ** +*************************************************************************/ + +#include <config.h> +#include <cstdlib> +#include <cstring> +#include <fstream> +#include "FileSystem.h" +#include "macros.h" + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + + +using namespace std; + +#ifdef __WIN32__ + #include <direct.h> + #include <windows.h> + const char *FileSystem::DEVNULL = "nul"; + const char FileSystem::PATHSEP = '\\'; + #define unlink _unlink +#else + #include <dirent.h> + #include <pwd.h> + #include <sys/stat.h> + #include <sys/types.h> + const char *FileSystem::DEVNULL = "/dev/null"; + const char FileSystem::PATHSEP = '/'; +#endif + + +bool FileSystem::remove (const string &fname) { + return unlink(fname.c_str()) == 0; +} + + +/** Copies a file. + * @param[in] src path of file to copy + * @param[in] dest path of target file + * @param[in] remove_src remove file 'src' if true + * @return true on success */ +bool FileSystem::copy (const string &src, const string &dest, bool remove_src) { + ifstream ifs(src.c_str(), ios::in|ios::binary); + ofstream ofs(dest.c_str(), ios::out|ios::binary); + if (ifs && ofs) { + ofs << ifs.rdbuf(); + if (!ifs.fail() && !ofs.fail() && remove_src) { + ofs.close(); + ifs.close(); + return remove(src); + } + else + return !remove_src; + } + return false; +} + + +bool FileSystem::rename (const string &oldname, const string &newname) { + return ::rename(oldname.c_str(), newname.c_str()) == 0; +} + + +UInt64 FileSystem::filesize (const string &fname) { +#ifdef __WIN32__ + // unfortunately, stat doesn't work properly under Windows + // so we have to use this freaky code + WIN32_FILE_ATTRIBUTE_DATA attr; + GetFileAttributesExA(fname.c_str(), GetFileExInfoStandard, &attr); + return (static_cast<UInt64>(attr.nFileSizeHigh) << (8*sizeof(attr.nFileSizeLow))) | attr.nFileSizeLow; +#else + struct stat attr; + return (stat(fname.c_str(), &attr) == 0) ? attr.st_size : 0; +#endif +} + + +string FileSystem::adaptPathSeperators (string path) { + for (size_t i=0; i < path.length(); i++) + if (path[i] == PATHSEP) + path[i] = '/'; + return path; +} + + +string FileSystem::getcwd () { + char buf[1024]; +#ifdef __WIN32__ + return adaptPathSeperators(_getcwd(buf, 1024)); +#else + return ::getcwd(buf, 1024); +#endif +} + + +/** Changes the work directory. + * @param[in] dir path to new work directory + * @return true on success */ +bool FileSystem::chdir (const char *dir) { + bool success = false; + if (dir) { +#ifdef __WIN32__ + success = (_chdir(dir) == 0); +#else + success = (chdir(dir) == 0); +#endif + } + return success; +} + + +/** Returns the user's home directory. */ +const char* FileSystem::userdir () { +#ifdef __WIN32__ + const char *drive=getenv("HOMEDRIVE"); + const char *path=getenv("HOMEPATH"); + if (drive && path) { + static string ret = string(drive)+path; + if (!ret.empty()) + return ret.c_str(); + } + return 0; +#else + const char *dir=getenv("HOME"); + if (!dir) { + if (const char *user=getenv("USER")) { + if (struct passwd *pw=getpwnam(user)) + dir = pw->pw_dir; + } + } + return dir; +#endif +} + + +/** Private wrapper function for mkdir: creates a single folder. + * @param[in] dir folder name + * @return true on success */ +static bool s_mkdir (const char *dir) { + bool success = true; + if (!FileSystem::exists(dir)) { +#ifdef __WIN32__ + success = (_mkdir(dir) == 0); +#else + success = (mkdir(dir, 0776) == 0); +#endif + } + return success; +} + + +static bool inline s_rmdir (const char *dir) { +#ifdef __WIN32__ + return (_rmdir(dir) == 0); +#else + return (rmdir(dir) == 0); +#endif +} + + +/** Removes leading and trailing whitespace from a string. */ +static string trim (const string &str) { + int first=0, last=str.length()-1; + while (isspace(str[first])) + first++; + while (isspace(str[last])) + last--; + return str.substr(first, last-first+1); +} + + +/** Creates a new folder relative to the current work directory. If necessary, + * the parent folders are also created. + * @param[in] dir single folder name or path to folder + * @return true if folder(s) could be created */ +bool FileSystem::mkdir (const char *dir) { + bool success = false; + if (dir) { + success = true; + const string dirstr = adaptPathSeperators(trim(dir)); + for (size_t pos=1; success && (pos = dirstr.find('/', pos)) != string::npos; pos++) + success &= s_mkdir(dirstr.substr(0, pos).c_str()); + success &= s_mkdir(dirstr.c_str()); + } + return success; +} + + +/** Removes a directory and its contents. + * @param[in] dirname path to directory + * @return true on success */ +bool FileSystem::rmdir (const char *dirname) { + bool ok = false; + if (dirname && isDirectory(dirname)) { + ok = true; +#ifdef __WIN32__ + string pattern = string(dirname) + "/*"; + WIN32_FIND_DATA data; + HANDLE h = FindFirstFile(pattern.c_str(), &data); + bool ready = (h == INVALID_HANDLE_VALUE); + while (!ready && ok) { + const char *fname = data.cFileName; + string path = string(dirname) + "/" + fname; + if (isDirectory(path.c_str())) { + if (strcmp(fname, ".") != 0 && strcmp(fname, "..") != 0) + ok = rmdir(path.c_str()) && s_rmdir(path.c_str()); + } + else if (isFile(path.c_str())) + ok = remove(path); + else + ok = false; + ready = !FindNextFile(h, &data); + } + FindClose(h); +#else + if (DIR *dir = opendir(dirname)) { + struct dirent *ent; + while ((ent = readdir(dir)) && ok) { + const char *fname = ent->d_name; + string path = string(fname) + "/" + fname; + if (isDirectory(path.c_str())) { + if (strcmp(fname, ".") != 0 && strcmp(fname, "..") != 0) + ok = rmdir(path.c_str()) && s_rmdir(path.c_str()); + } + else if (isFile(path.c_str())) + ok = remove(path); + else + ok = false; + } + closedir(dir); + } +#endif + ok = s_rmdir(dirname); + } + return ok; +} + + +/** Checks if a file or directory exits. */ +bool FileSystem::exists (const char *fname) { + if (!fname) + return false; +#ifdef __WIN32__ + return GetFileAttributes(fname) != INVALID_FILE_ATTRIBUTES; +#else + struct stat attr; + return stat(fname, &attr) == 0; +#endif +} + + +/** Returns true if 'fname' references a directory. */ +bool FileSystem::isDirectory (const char *fname) { + if (!fname) + return false; +#ifdef __WIN32__ + return GetFileAttributes(fname) & FILE_ATTRIBUTE_DIRECTORY; +#else + struct stat attr; + return stat(fname, &attr) == 0 && S_ISDIR(attr.st_mode); +#endif +} + + +/** Returns true if 'fname' references a file. */ +bool FileSystem::isFile (const char *fname) { + if (!fname) + return false; +#ifdef __WIN32__ + ifstream ifs(fname); + return (bool)ifs; +#else + struct stat attr; + return stat(fname, &attr) == 0 && S_ISREG(attr.st_mode); +#endif +} + + +int FileSystem::collect (const char *dirname, vector<string> &entries) { + entries.clear(); +#ifdef __WIN32__ + string pattern = string(dirname) + "/*"; + WIN32_FIND_DATA data; + HANDLE h = FindFirstFile(pattern.c_str(), &data); + bool ready = (h == INVALID_HANDLE_VALUE); + while (!ready) { + string fname = data.cFileName; + string path = string(dirname)+"/"+fname; + string typechar = isFile(path.c_str()) ? "f" : isDirectory(path.c_str()) ? "d" : "?"; + if (fname != "." && fname != "..") + entries.push_back(typechar+fname); + ready = !FindNextFile(h, &data); + } + FindClose(h); +#else + if (DIR *dir = opendir(dirname)) { + struct dirent *ent; + while ((ent = readdir(dir))) { + string fname = ent->d_name; + string path = string(dirname)+"/"+fname; + string typechar = isFile(path.c_str()) ? "f" : isDirectory(path.c_str()) ? "d" : "?"; + if (fname != "." && fname != "..") + entries.push_back(typechar+fname); + } + closedir(dir); + } +#endif + return entries.size(); +} + + |