From 1978c49bea5b439d993067c055cec47e70db8fd6 Mon Sep 17 00:00:00 2001
From: "Jannis M. Hoffmann" <jannis@fehcom.de>
Date: Sat, 7 Oct 2023 22:33:50 +0200
Subject: minor refactoring

---
 src/maildirmessage.cc | 192 +++++++++++++++-----------------------------------
 1 file changed, 58 insertions(+), 134 deletions(-)

(limited to 'src/maildirmessage.cc')

diff --git a/src/maildirmessage.cc b/src/maildirmessage.cc
index ee1d889..56a75c4 100644
--- a/src/maildirmessage.cc
+++ b/src/maildirmessage.cc
@@ -1,9 +1,10 @@
-/**  --------------------------------------------------------------------
+/**
  *  @file maildirmessage.cc
  *  @brief  Implementation of the MaildirMessage class.
  *  @author Andreas Aardal Hanssen
  *  @date Copyright 2002-2005
- *  -----------------------------------------------------------------  **/
+ */
+
 #include "maildirmessage.h"
 
 #include "convert.h"
@@ -25,14 +26,14 @@
 #include <unistd.h>
 #include <utime.h>
 
-using namespace ::std;
 using namespace Binc;
+using std::string;
+using std::vector;
 
 string Message::lastError;
 string MaildirMessage::storage;
 
 namespace {
-  //----------------------------------------------------------------------
   void printOneHeader(IODevice &io,
                       const MimePart *message,
                       const string &s_in,
@@ -44,11 +45,11 @@ namespace {
     if (message->h.getFirstHeader(s_in, hitem)) {
       tmp = hitem.getValue();
       io << toImapString(unfold(tmp, removecomments));
-    } else
+    } else {
       io << "NIL";
+    }
   }
 
-  //----------------------------------------------------------------------
   void printOneAddressList(IODevice &io,
                            const MimePart *message,
                            const string &s_in,
@@ -63,17 +64,17 @@ namespace {
       splitAddr(unfold(tmp, removecomments), addr);
       if (addr.size() != 0) {
         io << "(";
-        for (vector<string>::const_iterator i = addr.begin(); i != addr.end(); ++i)
-
-          io << Address(*i).toParenList();
+        for (const auto &i : addr)
+          io << Address(i).toParenList();
         io << ")";
-      } else
+      } else {
         io << "NIL";
-    } else
+      }
+    } else {
       io << "NIL";
+    }
   }
 
-  //----------------------------------------------------------------------
   void envelope(IODevice &io, const MimePart *message)
   {
     HeaderItem hitem;
@@ -106,16 +107,14 @@ namespace {
     io << ")";
   }
 
-  //----------------------------------------------------------------------
   void bodyStructure(IODevice &io, const MimePart *message, bool extended)
   {
     HeaderItem hitem;
     if (message->isMultipart() && message->members.size() > 0) {
       io << "(";
 
-      for (vector<MimePart>::const_iterator i = message->members.begin(); i != message->members.end();
-           ++i)
-        bodyStructure(io, &(*i), extended);
+      for (const auto &i : message->members)
+        bodyStructure(io, &i, extended);
 
       io << " ";
       io << toImapString(message->getSubType());
@@ -137,8 +136,7 @@ namespace {
           vector<string> v;
           split(tmp, ";", v);
 
-          for (vector<string>::const_iterator i = v.begin(); i != v.end(); ++i) {
-            string element = *i;
+          for (string element : v) {
             trim(element);
             if (element.find('=') != string::npos) {
               string::size_type pos = element.find('=');
@@ -153,15 +151,17 @@ namespace {
 
           if (parameters.size() != 0) {
             io << "(";
-            for (vector<string>::const_iterator i = parameters.begin(); i != parameters.end(); ++i) {
-              if (i != parameters.begin()) io << " ";
+            for (auto i = parameters.cbegin(); i != parameters.cend(); ++i) {
+              if (i != parameters.cbegin()) io << " ";
               io << toImapString(*i);
             }
             io << ")";
-          } else
+          } else {
             io << "NIL";
-        } else
+          }
+        } else {
           io << "NIL";
+        }
 
         // CONTENT-DISPOSITION
         io << " ";
@@ -207,13 +207,16 @@ namespace {
                 ++i;
               }
               io << ")";
-            } else
+            } else {
               io << "NIL";
+            }
             io << ")";
-          } else
+          } else {
             io << "NIL";
-        } else
+          }
+        } else {
           io << "NIL";
+        }
 
         // CONTENT-LANGUAGE
         io << " ";
@@ -251,8 +254,8 @@ namespace {
             subtype = "plain";
         }
 
-        for (vector<string>::const_iterator i = v.begin(); i != v.end(); ++i) {
-          if (i == v.begin()) continue;
+        for (auto i = v.cbegin(); i != v.cend(); ++i) {
+          if (i == v.cbegin()) continue;
           string element = *i;
           trim(element);
           if (element.find('=') != string::npos) {
@@ -278,13 +281,14 @@ namespace {
       io << " ";
       if (parameters.size() != 0) {
         io << "(";
-        for (vector<string>::const_iterator i = parameters.begin(); i != parameters.end(); ++i) {
-          if (i != parameters.begin()) io << " ";
+        for (auto i = parameters.cbegin(); i != parameters.cend(); ++i) {
+          if (i != parameters.cbegin()) io << " ";
           io << toImapString(*i);
         }
         io << ")";
-      } else
+      } else {
         io << "NIL";
+      }
 
       // CONTENT-ID
       io << " ";
@@ -301,8 +305,9 @@ namespace {
         tmp = hitem.getValue();
         trim(tmp);
         io << toImapString(tmp);
-      } else
+      } else {
         io << "\"7bit\"";
+      }
       io << " ";
 
       // Size of body in octets
@@ -366,13 +371,16 @@ namespace {
                 ++i;
               }
               io << ")";
-            } else
+            } else {
               io << "NIL";
+            }
             io << ")";
-          } else
+          } else {
             io << "NIL";
-        } else
+          }
+        } else {
           io << "NIL";
+        }
 
         // CONTENT-LANGUAGE
         io << " ";
@@ -388,10 +396,9 @@ namespace {
   }
 }
 
-//------------------------------------------------------------------------
 MaildirMessage::MaildirMessage(Maildir &hom)
   : fd(-1)
-  , doc(0)
+  , doc(nullptr)
   , internalFlags(None)
   , stdflags(F_NONE)
   , uid(0)
@@ -400,10 +407,9 @@ MaildirMessage::MaildirMessage(Maildir &hom)
   , safeName("")
   , internaldate(0)
   , home(hom)
-  , customFlags(0)
+  , customFlags(nullptr)
 {}
 
-//------------------------------------------------------------------------
 MaildirMessage::MaildirMessage(const MaildirMessage &copy)
   : fd(copy.fd)
   , doc(copy.doc)
@@ -424,43 +430,16 @@ MaildirMessage::MaildirMessage(const MaildirMessage &copy)
   }
 }
 
-//------------------------------------------------------------------------
 MaildirMessage::~MaildirMessage(void)
 {
   delete customFlags;
 }
 
-//------------------------------------------------------------------------
-MaildirMessage &MaildirMessage::operator=(const MaildirMessage &copy)
-{
-  fd = copy.fd;
-  doc = copy.doc;
-  internalFlags = copy.internalFlags;
-  stdflags = copy.stdflags;
-  uid = copy.uid;
-  size = copy.size;
-  unique = copy.unique;
-  safeName = copy.safeName;
-  internaldate = copy.internaldate;
-  home = copy.home;
-
-  if (copy.customFlags) {
-    customFlags = new vector<string>;
-    *customFlags = *copy.customFlags;
-  } else {
-    customFlags = 0;
-  }
-
-  return *this;
-}
-
-//------------------------------------------------------------------------
 bool MaildirMessage::operator<(const MaildirMessage &a) const
 {
   return uid < a.uid;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::close(void)
 {
   if (fd != -1) {
@@ -482,7 +461,7 @@ void MaildirMessage::close(void)
       struct utimbuf tim = {internaldate, internaldate};
       utime(safeName.c_str(), &tim);
     } else {
-      time_t t = time(0);
+      time_t t = time(nullptr);
       struct utimbuf tim = {t, t};
       utime(safeName.c_str(), &tim);
     }
@@ -490,57 +469,48 @@ void MaildirMessage::close(void)
     internalFlags &= ~WasWrittenTo;
   }
 
-
   if (doc) {
     doc->clear();
     delete doc;
-    doc = 0;
+    doc = nullptr;
   }
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setExpunged(void)
 {
   internalFlags |= Expunged;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setUnExpunged(void)
 {
   internalFlags &= ~Expunged;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setFlagsUnchanged(void)
 {
   internalFlags &= ~FlagsChanged;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::hasFlagsChanged(void) const
 {
   return (internalFlags & FlagsChanged) != 0;
 }
 
-//------------------------------------------------------------------------
 unsigned char MaildirMessage::getStdFlags(void) const
 {
   return stdflags;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::isExpunged(void) const
 {
   return (internalFlags & Expunged) != 0;
 }
 
-//------------------------------------------------------------------------
 unsigned int MaildirMessage::getUID(void) const
 {
   return uid;
 }
 
-//------------------------------------------------------------------------
 unsigned int MaildirMessage::getSize(bool render) const
 {
   if (size == 0 && render) {
@@ -551,57 +521,48 @@ unsigned int MaildirMessage::getSize(bool render) const
   return size;
 }
 
-//------------------------------------------------------------------------
 const string &MaildirMessage::getUnique(void) const
 {
   return unique;
 }
 
-//------------------------------------------------------------------------
 time_t MaildirMessage::getInternalDate(void) const
 {
   return internaldate;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setInternalDate(time_t t)
 {
   internaldate = t;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setStdFlag(unsigned char f_in)
 {
   internalFlags |= FlagsChanged;
   stdflags |= f_in;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::resetStdFlags(void)
 {
   internalFlags |= FlagsChanged;
   stdflags = F_NONE;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setUID(unsigned int i_in)
 {
   uid = i_in;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setSize(unsigned int i_in)
 {
   size = i_in;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setUnique(const string &s_in)
 {
   unique = s_in;
 }
 
-//------------------------------------------------------------------------
 int MaildirMessage::getFile(void) const
 {
   if (fd != -1) return fd;
@@ -619,16 +580,16 @@ int MaildirMessage::getFile(void) const
       if (errno == ENOENT) {
         struct stat st;
         if (lstat(fpath.c_str(), &st) != -1) {
-          bincWarning << "dangling symlink: " << fpath << endl;
+          bincWarning << "dangling symlink: " << fpath << std::endl;
           return -1;
         }
       } else {
-        bincWarning << "unable to open " << fpath << ": " << strerror(errno) << endl;
+        bincWarning << "unable to open " << fpath << ": " << strerror(errno) << std::endl;
         return -1;
       }
 
       home.scanFileNames();
-      if ((item = home.index.find(id)) == 0)
+      if ((item = home.index.find(id)) == nullptr)
         break;
       else
         fpath = home.path + "/cur/" + item->fileName;
@@ -643,38 +604,33 @@ int MaildirMessage::getFile(void) const
   return -1;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setFile(int fd)
 {
   this->fd = fd;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setSafeName(const string &name)
 {
   safeName = name;
 }
 
-//------------------------------------------------------------------------
 const string &MaildirMessage::getSafeName(void) const
 {
   return safeName;
 }
 
-//------------------------------------------------------------------------
 string MaildirMessage::getFileName(void) const
 {
   MaildirIndexItem *item = home.index.find(getUnique());
   if (!item) {
     home.scanFileNames();
 
-    if ((item = home.index.find(getUnique())) == 0) return "";
+    if ((item = home.index.find(getUnique())) == nullptr) return "";
   }
 
   return item->fileName;
 }
 
-//------------------------------------------------------------------------
 int MaildirMessage::readChunk(string &chunk)
 {
   if (fd == -1) {
@@ -692,7 +648,6 @@ int MaildirMessage::readChunk(string &chunk)
   return readBytes;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::appendChunk(const string &chunk)
 {
   if (fd == -1) {
@@ -725,7 +680,6 @@ bool MaildirMessage::appendChunk(const string &chunk)
   return false;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::parseFull(void) const
 {
   MaildirMessageCache &cache = MaildirMessageCache::getInstance();
@@ -744,7 +698,6 @@ bool MaildirMessage::parseFull(void) const
   return true;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::parseHeaders(void) const
 {
   MaildirMessageCache &cache = MaildirMessageCache::getInstance();
@@ -764,7 +717,6 @@ bool MaildirMessage::parseHeaders(void) const
   return true;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::printBodyStructure(bool extended) const
 {
   if (!parseFull()) return false;
@@ -773,7 +725,6 @@ bool MaildirMessage::printBodyStructure(bool extended) const
   return true;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::printEnvelope(void) const
 {
   if (!parseFull()) return false;
@@ -782,7 +733,6 @@ bool MaildirMessage::printEnvelope(void) const
   return true;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::printHeader(const std::string &section,
                                  std::vector<std::string> headers,
                                  bool includeHeaders,
@@ -795,7 +745,6 @@ bool MaildirMessage::printHeader(const std::string &section,
   return true;
 }
 
-//------------------------------------------------------------------------
 unsigned int MaildirMessage::getHeaderSize(const std::string &section,
                                            std::vector<std::string> headers,
                                            bool includeHeaders,
@@ -805,8 +754,9 @@ unsigned int MaildirMessage::getHeaderSize(const std::string &section,
 {
   if (section == "") {
     if (!parseHeaders()) return 0;
-  } else if (!parseFull())
+  } else if (!parseFull()) {
     return 0;
+  }
 
   const MimePart *part = doc->getPart(section, "", mime ? MimePart::FetchMime : MimePart::FetchHeader);
   if (!part) {
@@ -823,7 +773,6 @@ unsigned int MaildirMessage::getHeaderSize(const std::string &section,
   return storage.size();
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::printBody(const std::string &section,
                                unsigned int startOffset,
                                unsigned int length) const
@@ -833,7 +782,7 @@ bool MaildirMessage::printBody(const std::string &section,
   const MimePart *part = doc->getPart(section, "");
   if (!part) {
     storage = "";
-    return 0;
+    return false;
   }
 
   int fd = getFile();
@@ -844,7 +793,6 @@ bool MaildirMessage::printBody(const std::string &section,
   return true;
 }
 
-//------------------------------------------------------------------------
 unsigned int MaildirMessage::getBodySize(const std::string &section,
                                          unsigned int startOffset,
                                          unsigned int length) const
@@ -863,7 +811,6 @@ unsigned int MaildirMessage::getBodySize(const std::string &section,
   return s < length ? s : length;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::printDoc(unsigned int startOffset, unsigned int length, bool onlyText) const
 {
   if (!parseFull()) return false;
@@ -878,7 +825,6 @@ bool MaildirMessage::printDoc(unsigned int startOffset, unsigned int length, boo
   return true;
 }
 
-//------------------------------------------------------------------------
 unsigned int MaildirMessage::getDocSize(unsigned int startOffset,
                                         unsigned int length,
                                         bool onlyText) const
@@ -894,7 +840,6 @@ unsigned int MaildirMessage::getDocSize(unsigned int startOffset,
   return s < length ? s : length;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::headerContains(const std::string &header, const std::string &text)
 {
   if (!parseHeaders()) return false;
@@ -909,7 +854,6 @@ bool MaildirMessage::headerContains(const std::string &header, const std::string
   return (tmp.find(tmp2) != string::npos);
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::bodyContains(const std::string &text)
 {
   if (!parseFull()) return false;
@@ -944,7 +888,6 @@ bool MaildirMessage::bodyContains(const std::string &text)
   return false;
 }
 
-//------------------------------------------------------------------------
 bool MaildirMessage::textContains(const std::string &text)
 {
   // search the body part of the message..
@@ -973,7 +916,6 @@ bool MaildirMessage::textContains(const std::string &text)
   return false;
 }
 
-//------------------------------------------------------------------------
 const std::string &MaildirMessage::getHeader(const std::string &header)
 {
   static string NIL = "";
@@ -986,23 +928,19 @@ const std::string &MaildirMessage::getHeader(const std::string &header)
   return hitem.getValue();
 }
 
-//------------------------------------------------------------------------
 MaildirMessageCache::MaildirMessageCache(void) {}
 
-//------------------------------------------------------------------------
 MaildirMessageCache::~MaildirMessageCache(void)
 {
   clear();
 }
 
-//------------------------------------------------------------------------
 MaildirMessageCache &MaildirMessageCache::getInstance(void)
 {
   static MaildirMessageCache cache;
   return cache;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessageCache::addStatus(const MaildirMessage *m, ParseStatus s)
 {
   if (statuses.find(m) == statuses.end()) {
@@ -1019,7 +957,6 @@ void MaildirMessageCache::addStatus(const MaildirMessage *m, ParseStatus s)
   statuses[m] = s;
 }
 
-//------------------------------------------------------------------------
 MaildirMessageCache::ParseStatus MaildirMessageCache::getStatus(const MaildirMessage *m) const
 {
   if (statuses.find(m) == statuses.end()) return NotParsed;
@@ -1027,24 +964,19 @@ MaildirMessageCache::ParseStatus MaildirMessageCache::getStatus(const MaildirMes
   return statuses[m];
 }
 
-//------------------------------------------------------------------------
 void MaildirMessageCache::clear(void)
 {
-  for (deque<const MaildirMessage *>::iterator i = parsed.begin(); i != parsed.end(); ++i)
-    const_cast<MaildirMessage *>(*i)->close();
-
+  for (std::deque<const MaildirMessage *>::iterator i = parsed.begin(); i != parsed.end(); ++i)
   parsed.clear();
-  statuses.clear();
 }
 
-//------------------------------------------------------------------------
 void MaildirMessageCache::removeStatus(const MaildirMessage *m)
 {
   if (statuses.find(m) == statuses.end()) return;
 
   statuses.erase(statuses.find(m));
 
-  for (deque<const MaildirMessage *>::iterator i = parsed.begin(); i != parsed.end(); ++i) {
+  for (std::deque<const MaildirMessage *>::iterator i = parsed.begin(); i != parsed.end(); ++i) {
     if (*i == m) {
       const_cast<MaildirMessage *>(*i)->close();
       parsed.erase(i);
@@ -1053,25 +985,21 @@ void MaildirMessageCache::removeStatus(const MaildirMessage *m)
   }
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setInternalFlag(unsigned char f)
 {
   internalFlags |= f;
 }
 
-//------------------------------------------------------------------------
 unsigned char MaildirMessage::getInternalFlags(void) const
 {
   return internalFlags;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::clearInternalFlag(unsigned char f)
 {
   internalFlags &= ~f;
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::setCustomFlag(const string &flag)
 {
   if (!customFlags) {
@@ -1079,15 +1007,13 @@ void MaildirMessage::setCustomFlag(const string &flag)
     customFlags = new vector<string>;
   }
 
-  for (vector<string>::const_iterator it = customFlags->begin(); it != customFlags->end(); ++it) {
-    if (*it == flag) return;
-  }
+  for (const auto &it : *customFlags)
+    if (it == flag) return;
 
   internalFlags |= FlagsChanged | CustomFlagsChanged;
   customFlags->push_back(flag);
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::removeCustomFlag(const string &flag)
 {
   internalFlags |= FlagsChanged | CustomFlagsChanged;
@@ -1102,16 +1028,14 @@ void MaildirMessage::removeCustomFlag(const string &flag)
   }
 }
 
-//------------------------------------------------------------------------
 void MaildirMessage::resetCustomFlags(void)
 {
   internalFlags |= FlagsChanged | CustomFlagsChanged;
 
   delete customFlags;
-  customFlags = 0;
+  customFlags = nullptr;
 }
 
-//------------------------------------------------------------------------
 vector<string> MaildirMessage::getCustomFlags(void) const
 {
   if (!customFlags) return vector<string>();
-- 
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