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-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/src/SourceInput.cpp123
1 files changed, 123 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/src/SourceInput.cpp b/Build/source/texk/dvisvgm/dvisvgm-src/src/SourceInput.cpp
new file mode 100644
index 00000000000..96efb50a875
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/src/SourceInput.cpp
@@ -0,0 +1,123 @@
+/*************************************************************************
+** SourceInput.cpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2018 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 <fstream>
+#include <iostream>
+#include "FileSystem.hpp"
+#include "Message.hpp"
+#include "MessageException.hpp"
+#include "SourceInput.hpp"
+#include "utility.hpp"
+
+#ifdef _WIN32
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <windows.h>
+#endif
+
+#ifdef _MSC_VER
+#include <io.h>
+#else
+#include <cstdlib>
+#include <unistd.h>
+#endif
+
+using namespace std;
+
+#ifdef _WIN32
+static int fdwrite (int fd, const char *buf, size_t len) {return _write(fd, buf, len);}
+static int fdclose (int fd) {return _close(fd);}
+#else
+static int fdwrite (int fd, const char *buf, size_t len) {return write(fd, buf, len);}
+static int fdclose (int fd) {return close(fd);}
+#endif
+
+
+SourceInput::~SourceInput () {
+ // remove temporary file created for reading from stdin
+ if (!_tmpfilepath.empty())
+ FileSystem::remove(_tmpfilepath);
+}
+
+
+/** Creates a temporary file in the configured tmp folder.
+ * @param[out] path path of the created file
+ * @return file descriptor (>= 0 on success) */
+static int create_tmp_file (string &path) {
+ path = FileSystem::tmpdir();
+#ifndef _WIN32
+ path += "stdinXXXXXX";
+ int fd = mkstemp(&path[0]);
+#else
+ int fd = -1;
+ char fname[MAX_PATH];
+ std::replace(path.begin(), path.end(), '/', '\\');
+ if (GetTempFileName(path.c_str(), "stdin", 0, fname)) {
+ fd = _open(fname, _O_CREAT | _O_WRONLY | _O_BINARY, _S_IWRITE);
+ path = fname;
+ }
+#endif
+ return fd;
+}
+
+
+istream& SourceInput::getInputStream (bool showMessages) {
+ if (!_ifs.is_open()) {
+ if (!_fname.empty())
+ _ifs.open(_fname, ios::binary);
+ else {
+ int fd = create_tmp_file(_tmpfilepath);
+ if (fd < 0)
+ throw MessageException("can't create temporary file for writing");
+#ifdef _WIN32
+ if (_setmode(_fileno(stdin), _O_BINARY) == -1)
+ throw MessageException("can't open stdin in binary mode");
+#endif
+ if (showMessages)
+ Message::mstream() << "reading from " << getMessageFileName() << '\n';
+ char buf[1024];
+ while (cin) {
+ cin.read(buf, 1024);
+ size_t count = cin.gcount();
+ if (fdwrite(fd, buf, count) < 0)
+ throw MessageException("failed to write data to temporary file");
+ }
+ if (fdclose(fd) < 0)
+ throw MessageException("failed to close temporary file");
+ _ifs.open(_tmpfilepath, ios::binary);
+ }
+ }
+ return _ifs;
+}
+
+
+string SourceInput::getFileName () const {
+ return _fname.empty() ? "stdin" : _fname;
+}
+
+
+string SourceInput::getMessageFileName () const {
+ return _fname.empty() ? "<stdin>" : _fname;
+}
+
+
+string SourceInput::getFilePath () const {
+ return _tmpfilepath.empty() ? _fname : _tmpfilepath;
+}