orthanc-webviewer: Orthanc/Core/Toolbox.cpp comparison

comparison Orthanc/Core/Toolbox.cpp @ 78:d6da56f86e5a

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author	Sebastien Jodogne <s.jodogne@gmail.com>
date	Fri, 25 Sep 2015 11:29:17 +0200
parents
children	abdde1dfb3eb

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-:f44ebb25691c
+:d6da56f86e5a
+/**
+* Orthanc - A Lightweight, RESTful DICOM Store
+* Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
+* Department, University Hospital of Liege, Belgium
+*
+* 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.
+*
+* In addition, as a special exception, the copyright holders of this
+* program give permission to link the code of its release with the
+* OpenSSL project's "OpenSSL" library (or with modified versions of it
+* that use the same license as the "OpenSSL" library), and distribute
+* the linked executables. You must obey the GNU General Public License
+* in all respects for all of the code used other than "OpenSSL". If you
+* modify file(s) with this exception, you may extend this exception to
+* your version of the file(s), but you are not obligated to do so. If
+* you do not wish to do so, delete this exception statement from your
+* version. If you delete this exception statement from all source files
+* in the program, then also delete it here.
+*
+* 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 "PrecompiledHeaders.h"
+#include "Toolbox.h"
+#include "OrthancException.h"
+#include "Logging.h"
+#include <string>
+#include <stdint.h>
+#include <string.h>
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
+#include <boost/uuid/sha1.hpp>
+#include <boost/lexical_cast.hpp>
+#include <algorithm>
+#include <ctype.h>
+#if BOOST_HAS_DATE_TIME == 1
+#include <boost/date_time/posix_time/posix_time.hpp>
+#endif
+#if BOOST_HAS_REGEX == 1
+#include <boost/regex.hpp>
+#endif
+#if defined(_WIN32)
+#include <windows.h>
+#include <process.h>   // For "_spawnvp()" and "_getpid()"
+#else
+#include <unistd.h>    // For "execvp()"
+#include <sys/wait.h>  // For "waitpid()"
+#endif
+#if defined(__APPLE__) && defined(__MACH__)
+#include <mach-o/dyld.h> /* _NSGetExecutablePath */
+#include <limits.h>      /* PATH_MAX */
+#endif
+#if defined(__linux) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
+#include <limits.h>      /* PATH_MAX */
+#include <signal.h>
+#include <unistd.h>
+#endif
+#if BOOST_HAS_LOCALE != 1
+#error Since version 0.7.6, Orthanc entirely relies on boost::locale
+#endif
+#include <boost/locale.hpp>
+#if !defined(ORTHANC_ENABLE_MD5) || ORTHANC_ENABLE_MD5 == 1
+#include "../Resources/ThirdParty/md5/md5.h"
+#endif
+#if !defined(ORTHANC_ENABLE_BASE64) || ORTHANC_ENABLE_BASE64 == 1
+#include "../Resources/ThirdParty/base64/base64.h"
+#endif
+#if defined(_MSC_VER) && (_MSC_VER < 1800)
+// Patch for the missing "_strtoll" symbol when compiling with Visual Studio < 2013
+extern "C"
+{
+int64_t _strtoi64(const char *nptr, char **endptr, int base);
+int64_t strtoll(const char *nptr, char **endptr, int base)
+{
+return _strtoi64(nptr, endptr, base);
+}
+}
+#endif
+#if ORTHANC_PUGIXML_ENABLED == 1
+#include "ChunkedBuffer.h"
+#include <pugixml.hpp>
+#endif
+namespace Orthanc
+{
+static bool finish;
+#if defined(_WIN32)
+static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType)
+{
+// http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx
+finish = true;
+return true;
+}
+#else
+static void SignalHandler(int)
+{
+finish = true;
+}
+#endif
+void Toolbox::USleep(uint64_t microSeconds)
+{
+#if defined(_WIN32)
+::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000)));
+#elif defined(__linux) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
+usleep(microSeconds);
+#else
+#error Support your platform here
+#endif
+}
+static void ServerBarrierInternal(const bool* stopFlag)
+{
+#if defined(_WIN32)
+SetConsoleCtrlHandler(ConsoleControlHandler, true);
+#else
+signal(SIGINT, SignalHandler);
+signal(SIGQUIT, SignalHandler);
+signal(SIGTERM, SignalHandler);
+#endif
+// Active loop that awakens every 100ms
+finish = false;
+while (!(*stopFlag || finish))
+{
+Toolbox::USleep(100 * 1000);
+}
+#if defined(_WIN32)
+SetConsoleCtrlHandler(ConsoleControlHandler, false);
+#else
+signal(SIGINT, NULL);
+signal(SIGQUIT, NULL);
+signal(SIGTERM, NULL);
+#endif
+}
+void Toolbox::ServerBarrier(const bool& stopFlag)
+{
+ServerBarrierInternal(&stopFlag);
+}
+void Toolbox::ServerBarrier()
+{
+const bool stopFlag = false;
+ServerBarrierInternal(&stopFlag);
+}
+void Toolbox::ToUpperCase(std::string& s)
+{
+std::transform(s.begin(), s.end(), s.begin(), toupper);
+}
+void Toolbox::ToLowerCase(std::string& s)
+{
+std::transform(s.begin(), s.end(), s.begin(), tolower);
+}
+void Toolbox::ToUpperCase(std::string& result,
+const std::string& source)
+{
+result = source;
+ToUpperCase(result);
+}
+void Toolbox::ToLowerCase(std::string& result,
+const std::string& source)
+{
+result = source;
+ToLowerCase(result);
+}
+void Toolbox::ReadFile(std::string& content,
+const std::string& path)
+{
+if (!boost::filesystem::is_regular_file(path))
+{
+LOG(ERROR) << "The path does not point to a regular file: " << path;
+throw OrthancException(ErrorCode_RegularFileExpected);
+}
+boost::filesystem::ifstream f;
+f.open(path, std::ifstream::in | std::ifstream::binary);
+if (!f.good())
+{
+throw OrthancException(ErrorCode_InexistentFile);
+}
+// http://www.cplusplus.com/reference/iostream/istream/tellg/
+f.seekg(0, std::ios::end);
+std::streamsize size = f.tellg();
+f.seekg(0, std::ios::beg);
+content.resize(size);
+if (size != 0)
+{
+f.read(reinterpret_cast<char*>(&content[0]), size);
+}
+f.close();
+}
+void Toolbox::WriteFile(const void* content,
+size_t size,
+const std::string& path)
+{
+boost::filesystem::ofstream f;
+f.open(path, std::ofstream::binary);
+if (!f.good())
+{
+throw OrthancException(ErrorCode_CannotWriteFile);
+}
+if (size != 0)
+{
+f.write(reinterpret_cast<const char*>(content), size);
+}
+f.close();
+}
+void Toolbox::WriteFile(const std::string& content,
+const std::string& path)
+{
+WriteFile(content.size() > 0 ? content.c_str() : NULL,
+content.size(), path);
+}
+void Toolbox::RemoveFile(const std::string& path)
+{
+if (boost::filesystem::exists(path))
+{
+if (boost::filesystem::is_regular_file(path))
+{
+boost::filesystem::remove(path);
+}
+else
+{
+throw OrthancException(ErrorCode_RegularFileExpected);
+}
+}
+}
+void Toolbox::SplitUriComponents(UriComponents& components,
+const std::string& uri)
+{
+static const char URI_SEPARATOR = '/';
+components.clear();
+if (uri.size() == 0 ||
+uri[0] != URI_SEPARATOR)
+{
+throw OrthancException(ErrorCode_UriSyntax);
+}
+// Count the number of slashes in the URI to make an assumption
+// about the number of components in the URI
+unsigned int estimatedSize = 0;
+for (unsigned int i = 0; i < uri.size(); i++)
+{
+if (uri[i] == URI_SEPARATOR)
+estimatedSize++;
+}
+components.reserve(estimatedSize - 1);
+unsigned int start = 1;
+unsigned int end = 1;
+while (end < uri.size())
+{
+// This is the loop invariant
+assert(uri[start - 1] == '/' && (end >= start));
+if (uri[end] == '/')
+{
+components.push_back(std::string(&uri[start], end - start));
+end++;
+start = end;
+}
+else
+{
+end++;
+}
+}
+if (start < uri.size())
+{
+components.push_back(std::string(&uri[start], end - start));
+}
+for (size_t i = 0; i < components.size(); i++)
+{
+if (components[i].size() == 0)
+{
+// Empty component, as in: "/coucou//e"
+throw OrthancException(ErrorCode_UriSyntax);
+}
+}
+}
+void Toolbox::TruncateUri(UriComponents& target,
+const UriComponents& source,
+size_t fromLevel)
+{
+target.clear();
+if (source.size() > fromLevel)
+{
+target.resize(source.size() - fromLevel);
+size_t j = 0;
+for (size_t i = fromLevel; i < source.size(); i++, j++)
+{
+target[j] = source[i];
+}
+assert(j == target.size());
+}
+}
+bool Toolbox::IsChildUri(const UriComponents& baseUri,
+const UriComponents& testedUri)
+{
+if (testedUri.size() < baseUri.size())
+{
+return false;
+}
+for (size_t i = 0; i < baseUri.size(); i++)
+{
+if (baseUri[i] != testedUri[i])
+return false;
+}
+return true;
+}
+std::string Toolbox::AutodetectMimeType(const std::string& path)
+{
+std::string contentType;
+size_t lastDot = path.rfind('.');
+size_t lastSlash = path.rfind('/');
+if (lastDot == std::string::npos ||
+(lastSlash != std::string::npos && lastDot < lastSlash))
+{
+// No trailing dot, unable to detect the content type
+}
+else
+{
+const char* extension = &path[lastDot + 1];
+// http://en.wikipedia.org/wiki/Mime_types
+// Text types
+if (!strcmp(extension, "txt"))
+contentType = "text/plain";
+else if (!strcmp(extension, "html"))
+contentType = "text/html";
+else if (!strcmp(extension, "xml"))
+contentType = "text/xml";
+else if (!strcmp(extension, "css"))
+contentType = "text/css";
+// Application types
+else if (!strcmp(extension, "js"))
+contentType = "application/javascript";
+else if (!strcmp(extension, "json"))
+contentType = "application/json";
+else if (!strcmp(extension, "pdf"))
+contentType = "application/pdf";
+// Images types
+else if (!strcmp(extension, "jpg") || !strcmp(extension, "jpeg"))
+contentType = "image/jpeg";
+else if (!strcmp(extension, "gif"))
+contentType = "image/gif";
+else if (!strcmp(extension, "png"))
+contentType = "image/png";
+}
+return contentType;
+}
+std::string Toolbox::FlattenUri(const UriComponents& components,
+size_t fromLevel)
+{
+if (components.size() <= fromLevel)
+{
+return "/";
+}
+else
+{
+std::string r;
+for (size_t i = fromLevel; i < components.size(); i++)
+{
+r += "/" + components[i];
+}
+return r;
+}
+}
+uint64_t Toolbox::GetFileSize(const std::string& path)
+{
+try
+{
+return static_cast<uint64_t>(boost::filesystem::file_size(path));
+}
+catch (boost::filesystem::filesystem_error&)
+{
+throw OrthancException(ErrorCode_InexistentFile);
+}
+}
+#if !defined(ORTHANC_ENABLE_MD5) || ORTHANC_ENABLE_MD5 == 1
+static char GetHexadecimalCharacter(uint8_t value)
+{
+assert(value < 16);
+if (value < 10)
+return value + '0';
+else
+return (value - 10) + 'a';
+}
+void Toolbox::ComputeMD5(std::string& result,
+const std::string& data)
+{
+if (data.size() > 0)
+{
+ComputeMD5(result, &data[0], data.size());
+}
+else
+{
+ComputeMD5(result, NULL, 0);
+}
+}
+void Toolbox::ComputeMD5(std::string& result,
+const void* data,
+size_t length)
+{
+md5_state_s state;
+md5_init(&state);
+if (length > 0)
+{
+md5_append(&state,
+reinterpret_cast<const md5_byte_t*>(data),
+static_cast<int>(length));
+}
+md5_byte_t actualHash[16];
+md5_finish(&state, actualHash);
+result.resize(32);
+for (unsigned int i = 0; i < 16; i++)
+{
+result[2 * i] = GetHexadecimalCharacter(actualHash[i] / 16);
+result[2 * i + 1] = GetHexadecimalCharacter(actualHash[i] % 16);
+}
+}
+#endif
+#if !defined(ORTHANC_ENABLE_BASE64) || ORTHANC_ENABLE_BASE64 == 1
+void Toolbox::EncodeBase64(std::string& result,
+const std::string& data)
+{
+result = base64_encode(data);
+}
+void Toolbox::DecodeBase64(std::string& result,
+const std::string& data)
+{
+result = base64_decode(data);
+}
+#endif
+#if defined(_WIN32)
+static std::string GetPathToExecutableInternal()
+{
+// Yes, this is ugly, but there is no simple way to get the
+// required buffer size, so we use a big constant
+std::vector<char> buffer(32768);
+/*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1));
+return std::string(&buffer[0]);
+}
+#elif defined(__linux) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
+static std::string GetPathToExecutableInternal()
+{
+std::vector<char> buffer(PATH_MAX + 1);
+ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1);
+if (bytes == 0)
+{
+throw OrthancException(ErrorCode_PathToExecutable);
+}
+return std::string(&buffer[0]);
+}
+#elif defined(__APPLE__) && defined(__MACH__)
+static std::string GetPathToExecutableInternal()
+{
+char pathbuf[PATH_MAX + 1];
+unsigned int  bufsize = static_cast<int>(sizeof(pathbuf));
+_NSGetExecutablePath( pathbuf, &bufsize);
+return std::string(pathbuf);
+}
+#else
+#error Support your platform here
+#endif
+std::string Toolbox::GetPathToExecutable()
+{
+boost::filesystem::path p(GetPathToExecutableInternal());
+return boost::filesystem::absolute(p).string();
+}
+std::string Toolbox::GetDirectoryOfExecutable()
+{
+boost::filesystem::path p(GetPathToExecutableInternal());
+return boost::filesystem::absolute(p.parent_path()).string();
+}
+static const char* GetBoostLocaleEncoding(const Encoding sourceEncoding)
+{
+switch (sourceEncoding)
+{
+case Encoding_Utf8:
+return "UTF-8";
+case Encoding_Ascii:
+return "ASCII";
+case Encoding_Latin1:
+return "ISO-8859-1";
+break;
+case Encoding_Latin2:
+return "ISO-8859-2";
+break;
+case Encoding_Latin3:
+return "ISO-8859-3";
+break;
+case Encoding_Latin4:
+return "ISO-8859-4";
+break;
+case Encoding_Latin5:
+return "ISO-8859-9";
+break;
+case Encoding_Cyrillic:
+return "ISO-8859-5";
+break;
+case Encoding_Windows1251:
+return "WINDOWS-1251";
+break;
+case Encoding_Arabic:
+return "ISO-8859-6";
+break;
+case Encoding_Greek:
+return "ISO-8859-7";
+break;
+case Encoding_Hebrew:
+return "ISO-8859-8";
+break;
+case Encoding_Japanese:
+return "SHIFT-JIS";
+break;
+case Encoding_Chinese:
+return "GB18030";
+break;
+case Encoding_Thai:
+return "TIS620.2533-0";
+break;
+default:
+throw OrthancException(ErrorCode_NotImplemented);
+}
+}
+std::string Toolbox::ConvertToUtf8(const std::string& source,
+Encoding sourceEncoding)
+{
+if (sourceEncoding == Encoding_Utf8)
+{
+// Already in UTF-8: No conversion is required
+return source;
+}
+if (sourceEncoding == Encoding_Ascii)
+{
+return ConvertToAscii(source);
+}
+const char* encoding = GetBoostLocaleEncoding(sourceEncoding);
+try
+{
+return boost::locale::conv::to_utf<char>(source, encoding);
+}
+catch (std::runtime_error&)
+{
+// Bad input string or bad encoding
+return ConvertToAscii(source);
+}
+}
+std::string Toolbox::ConvertFromUtf8(const std::string& source,
+Encoding targetEncoding)
+{
+if (targetEncoding == Encoding_Utf8)
+{
+// Already in UTF-8: No conversion is required
+return source;
+}
+if (targetEncoding == Encoding_Ascii)
+{
+return ConvertToAscii(source);
+}
+const char* encoding = GetBoostLocaleEncoding(targetEncoding);
+try
+{
+return boost::locale::conv::from_utf<char>(source, encoding);
+}
+catch (std::runtime_error&)
+{
+// Bad input string or bad encoding
+return ConvertToAscii(source);
+}
+}
+std::string Toolbox::ConvertToAscii(const std::string& source)
+{
+std::string result;
+result.reserve(source.size() + 1);
+for (size_t i = 0; i < source.size(); i++)
+{
+if (source[i] <= 127 && source[i] >= 0 && !iscntrl(source[i]))
+{
+result.push_back(source[i]);
+}
+}
+return result;
+}
+void Toolbox::ComputeSHA1(std::string& result,
+const std::string& data)
+{
+boost::uuids::detail::sha1 sha1;
+if (data.size() > 0)
+{
+sha1.process_bytes(&data[0], data.size());
+}
+unsigned int digest[5];
+// Sanity check for the memory layout: A SHA-1 digest is 160 bits wide
+assert(sizeof(unsigned int) == 4 && sizeof(digest) == (160 / 8));
+sha1.get_digest(digest);
+result.resize(8 * 5 + 4);
+sprintf(&result[0], "%08x-%08x-%08x-%08x-%08x",
+digest[0],
+digest[1],
+digest[2],
+digest[3],
+digest[4]);
+}
+bool Toolbox::IsSHA1(const char* str,
+size_t size)
+{
+if (size == 0)
+{
+return false;
+}
+const char* start = str;
+const char* end = str + size;
+// Trim the beginning of the string
+while (start < end)
+{
+if (*start == '\0' ||
+isspace(*start))
+{
+start++;
+}
+else
+{
+break;
+}
+}
+// Trim the trailing of the string
+while (start < end)
+{
+if (*(end - 1) == '\0' ||
+isspace(*(end - 1)))
+{
+end--;
+}
+else
+{
+break;
+}
+}
+if (end - start != 44)
+{
+return false;
+}
+for (unsigned int i = 0; i < 44; i++)
+{
+if (i == 8 ||
+i == 17 ||
+i == 26 ||
+i == 35)
+{
+if (start[i] != '-')
+return false;
+}
+else
+{
+if (!isalnum(start[i]))
+return false;
+}
+}
+return true;
+}
+bool Toolbox::IsSHA1(const std::string& s)
+{
+if (s.size() == 0)
+{
+return false;
+}
+else
+{
+return IsSHA1(s.c_str(), s.size());
+}
+}
+#if BOOST_HAS_DATE_TIME == 1
+std::string Toolbox::GetNowIsoString()
+{
+boost::posix_time::ptime now = boost::posix_time::second_clock::local_time();
+return boost::posix_time::to_iso_string(now);
+}
+void Toolbox::GetNowDicom(std::string& date,
+std::string& time)
+{
+boost::posix_time::ptime now = boost::posix_time::second_clock::local_time();
+tm tm = boost::posix_time::to_tm(now);
+char s[32];
+sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+date.assign(s);
+// TODO milliseconds
+sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0);
+time.assign(s);
+}
+#endif
+std::string Toolbox::StripSpaces(const std::string& source)
+{
+size_t first = 0;
+while (first < source.length() &&
+isspace(source[first]))
+{
+first++;
+}
+if (first == source.length())
+{
+// String containing only spaces
+return "";
+}
+size_t last = source.length();
+while (last > first &&
+isspace(source[last - 1]))
+{
+last--;
+}
+assert(first <= last);
+return source.substr(first, last - first);
+}
+static char Hex2Dec(char c)
+{
+return ((c >= '0' && c <= '9') ? c - '0' :
+((c >= 'a' && c <= 'f') ? c - 'a' + 10 : c - 'A' + 10));
+}
+void Toolbox::UrlDecode(std::string& s)
+{
+// http://en.wikipedia.org/wiki/Percent-encoding
+// http://www.w3schools.com/tags/ref_urlencode.asp
+// http://stackoverflow.com/questions/154536/encode-decode-urls-in-c
+if (s.size() == 0)
+{
+return;
+}
+size_t source = 0;
+size_t target = 0;
+while (source < s.size())
+{
+if (s[source] == '%' &&
+source + 2 < s.size() &&
+isalnum(s[source + 1]) &&
+isalnum(s[source + 2]))
+{
+s[target] = (Hex2Dec(s[source + 1]) << 4) | Hex2Dec(s[source + 2]);
+source += 3;
+target += 1;
+}
+else
+{
+if (s[source] == '+')
+s[target] = ' ';
+else
+s[target] = s[source];
+source++;
+target++;
+}
+}
+s.resize(target);
+}
+Endianness Toolbox::DetectEndianness()
+{
+// http://sourceforge.net/p/predef/wiki/Endianness/
+uint8_t buffer[4];
+buffer[0] = 0x00;
+buffer[1] = 0x01;
+buffer[2] = 0x02;
+buffer[3] = 0x03;
+switch (*((uint32_t *)buffer))
+{
+case 0x00010203:
+return Endianness_Big;
+case 0x03020100:
+return Endianness_Little;
+default:
+throw OrthancException(ErrorCode_NotImplemented);
+}
+}
+#if BOOST_HAS_REGEX == 1
+std::string Toolbox::WildcardToRegularExpression(const std::string& source)
+{
+// TODO - Speed up this with a regular expression
+std::string result = source;
+// Escape all special characters
+boost::replace_all(result, "\\", "\\\\");
+boost::replace_all(result, "^", "\\^");
+boost::replace_all(result, ".", "\\.");
+boost::replace_all(result, "$", "\\$");
+boost::replace_all(result, "|", "\\|");
+boost::replace_all(result, "(", "\\(");
+boost::replace_all(result, ")", "\\)");
+boost::replace_all(result, "[", "\\[");
+boost::replace_all(result, "]", "\\]");
+boost::replace_all(result, "+", "\\+");
+boost::replace_all(result, "/", "\\/");
+boost::replace_all(result, "{", "\\{");
+boost::replace_all(result, "}", "\\}");
+// Convert wildcards '*' and '?' to their regex equivalents
+boost::replace_all(result, "?", ".");
+boost::replace_all(result, "*", ".*");
+return result;
+}
+#endif
+void Toolbox::TokenizeString(std::vector<std::string>& result,
+const std::string& value,
+char separator)
+{
+result.clear();
+std::string currentItem;
+for (size_t i = 0; i < value.size(); i++)
+{
+if (value[i] == separator)
+{
+result.push_back(currentItem);
+currentItem.clear();
+}
+else
+{
+currentItem.push_back(value[i]);
+}
+}
+result.push_back(currentItem);
+}
+#if BOOST_HAS_REGEX == 1
+void Toolbox::DecodeDataUriScheme(std::string& mime,
+std::string& content,
+const std::string& source)
+{
+boost::regex pattern("data:([^;]+);base64,([a-zA-Z0-9=+/]*)",
+boost::regex::icase /* case insensitive search */);
+boost::cmatch what;
+if (regex_match(source.c_str(), what, pattern))
+{
+mime = what[1];
+DecodeBase64(content, what[2]);
+}
+else
+{
+throw OrthancException(ErrorCode_BadFileFormat);
+}
+}
+#endif
+void Toolbox::MakeDirectory(const std::string& path)
+{
+if (boost::filesystem::exists(path))
+{
+if (!boost::filesystem::is_directory(path))
+{
+throw OrthancException(ErrorCode_DirectoryOverFile);
+}
+}
+else
+{
+if (!boost::filesystem::create_directories(path))
+{
+throw OrthancException(ErrorCode_MakeDirectory);
+}
+}
+}
+bool Toolbox::IsExistingFile(const std::string& path)
+{
+return boost::filesystem::exists(path);
+}
+#if ORTHANC_PUGIXML_ENABLED == 1
+class ChunkedBufferWriter : public pugi::xml_writer
+{
+private:
+ChunkedBuffer buffer_;
+public:
+virtual void write(const void *data, size_t size)
+{
+if (size > 0)
+{
+buffer_.AddChunk(reinterpret_cast<const char*>(data), size);
+}
+}
+void Flatten(std::string& s)
+{
+buffer_.Flatten(s);
+}
+};
+static void JsonToXmlInternal(pugi::xml_node& target,
+const Json::Value& source,
+const std::string& arrayElement)
+{
+// http://jsoncpp.sourceforge.net/value_8h_source.html#l00030
+switch (source.type())
+{
+case Json::nullValue:
+{
+target.append_child(pugi::node_pcdata).set_value("null");
+break;
+}
+case Json::intValue:
+{
+std::string s = boost::lexical_cast<std::string>(source.asInt());
+target.append_child(pugi::node_pcdata).set_value(s.c_str());
+break;
+}
+case Json::uintValue:
+{
+std::string s = boost::lexical_cast<std::string>(source.asUInt());
+target.append_child(pugi::node_pcdata).set_value(s.c_str());
+break;
+}
+case Json::realValue:
+{
+std::string s = boost::lexical_cast<std::string>(source.asFloat());
+target.append_child(pugi::node_pcdata).set_value(s.c_str());
+break;
+}
+case Json::stringValue:
+{
+target.append_child(pugi::node_pcdata).set_value(source.asString().c_str());
+break;
+}
+case Json::booleanValue:
+{
+target.append_child(pugi::node_pcdata).set_value(source.asBool() ? "true" : "false");
+break;
+}
+case Json::arrayValue:
+{
+for (Json::Value::ArrayIndex i = 0; i < source.size(); i++)
+{
+pugi::xml_node node = target.append_child();
+node.set_name(arrayElement.c_str());
+JsonToXmlInternal(node, source[i], arrayElement);
+}
+break;
+}
+case Json::objectValue:
+{
+Json::Value::Members members = source.getMemberNames();
+for (size_t i = 0; i < members.size(); i++)
+{
+pugi::xml_node node = target.append_child();
+node.set_name(members[i].c_str());
+JsonToXmlInternal(node, source[members[i]], arrayElement);
+}
+break;
+}
+default:
+throw OrthancException(ErrorCode_NotImplemented);
+}
+}
+void Toolbox::JsonToXml(std::string& target,
+const Json::Value& source,
+const std::string& rootElement,
+const std::string& arrayElement)
+{
+pugi::xml_document doc;
+pugi::xml_node n = doc.append_child(rootElement.c_str());
+JsonToXmlInternal(n, source, arrayElement);
+pugi::xml_node decl = doc.prepend_child(pugi::node_declaration);
+decl.append_attribute("version").set_value("1.0");
+decl.append_attribute("encoding").set_value("utf-8");
+ChunkedBufferWriter writer;
+doc.save(writer, "  ", pugi::format_default, pugi::encoding_utf8);
+writer.Flatten(target);
+}
+#endif
+void Toolbox::ExecuteSystemCommand(const std::string& command,
+const std::vector<std::string>& arguments)
+{
+// Convert the arguments as a C array
+std::vector<char*>  args(arguments.size() + 2);
+args.front() = const_cast<char*>(command.c_str());
+for (size_t i = 0; i < arguments.size(); i++)
+{
+args[i + 1] = const_cast<char*>(arguments[i].c_str());
+}
+args.back() = NULL;
+int status;
+#if defined(_WIN32)
+// http://msdn.microsoft.com/en-us/library/275khfab.aspx
+status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0]));
+#else
+int pid = fork();
+if (pid == -1)
+{
+// Error in fork()
+#if ORTHANC_ENABLE_LOGGING == 1
+LOG(ERROR) << "Cannot fork a child process";
+#endif
+throw OrthancException(ErrorCode_SystemCommand);
+}
+else if (pid == 0)
+{
+// Execute the system command in the child process
+execvp(command.c_str(), &args[0]);
+// We should never get here
+_exit(1);
+}
+else
+{
+// Wait for the system command to exit
+waitpid(pid, &status, 0);
+}
+#endif
+if (status != 0)
+{
+#if ORTHANC_ENABLE_LOGGING == 1
+LOG(ERROR) << "System command failed with status code " << status;
+#endif
+throw OrthancException(ErrorCode_SystemCommand);
+}
+}
+bool Toolbox::IsInteger(const std::string& str)
+{
+std::string s = StripSpaces(str);
+if (s.size() == 0)
+{
+return false;
+}
+size_t pos = 0;
+if (s[0] == '-')
+{
+if (s.size() == 1)
+{
+return false;
+}
+pos = 1;
+}
+while (pos < s.size())
+{
+if (!isdigit(s[pos]))
+{
+return false;
+}
+pos++;
+}
+return true;
+}
+void Toolbox::CopyJsonWithoutComments(Json::Value& target,
+const Json::Value& source)
+{
+switch (source.type())
+{
+case Json::nullValue:
+target = Json::nullValue;
+break;
+case Json::intValue:
+target = source.asInt64();
+break;
+case Json::uintValue:
+target = source.asUInt64();
+break;
+case Json::realValue:
+target = source.asDouble();
+break;
+case Json::stringValue:
+target = source.asString();
+break;
+case Json::booleanValue:
+target = source.asBool();
+break;
+case Json::arrayValue:
+{
+target = Json::arrayValue;
+for (Json::Value::ArrayIndex i = 0; i < source.size(); i++)
+{
+Json::Value& item = target.append(Json::nullValue);
+CopyJsonWithoutComments(item, source[i]);
+}
+break;
+}
+case Json::objectValue:
+{
+target = Json::objectValue;
+Json::Value::Members members = source.getMemberNames();
+for (Json::Value::ArrayIndex i = 0; i < members.size(); i++)
+{
+const std::string item = members[i];
+CopyJsonWithoutComments(target[item], source[item]);
+}
+break;
+}
+default:
+break;
+}
+}
+bool Toolbox::StartsWith(const std::string& str,
+const std::string& prefix)
+{
+if (str.size() < prefix.size())
+{
+return false;
+}
+else
+{
+return str.compare(0, prefix.size(), prefix) == 0;
+}
+}
+int Toolbox::GetProcessId()
+{
+#if defined(_WIN32)
+return static_cast<int>(_getpid());
+#else
+return static_cast<int>(getpid());
+#endif
+}
+}

Mercurial > hg > orthanc-webviewer

comparison Orthanc/Core/Toolbox.cpp @ 78:d6da56f86e5a