src/gromacs/utility/messagestringcollector.cpp

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  35 /*! \internal \file
  36  * \brief
  37  * Implements gmx::MessageStringCollector.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \ingroup module_utility
  41  */
  42 #include "gmxpre.h"
  43
  44 #include "messagestringcollector.h"
  45
  46 #include <vector>
  47
  48 #include "gromacs/utility/gmxassert.h"
  49
  50 namespace gmx
  51 {
  52
  53 class MessageStringCollector::Impl
  54 {
  55 public:
  56     Impl() : prevContext_(0) {}
  57
  58     std::vector<std::string> contexts_;
  59     std::string              text_;
  60     size_t                   prevContext_;
  61 };
  62
  63 MessageStringCollector::MessageStringCollector() : impl_(new Impl) {}
  64
  65 MessageStringCollector::~MessageStringCollector() {}
  66
  67 void MessageStringCollector::startContext(const char* name)
  68 {
  69     impl_->contexts_.emplace_back(name);
  70 }
  71
  72 void MessageStringCollector::append(const std::string& message)
  73 {
  74     int indent = static_cast<int>(impl_->prevContext_ * 2);
  75     if (!impl_->contexts_.empty())
  76     {
  77         std::vector<std::string>::const_iterator ci;
  78         for (ci = impl_->contexts_.begin() + impl_->prevContext_; ci != impl_->contexts_.end(); ++ci)
  79         {
  80             impl_->text_.append(indent, ' ');
  81             impl_->text_.append(*ci);
  82             impl_->text_.append("\n");
  83             indent += 2;
  84         }
  85     }
  86     impl_->prevContext_ = impl_->contexts_.size();
  87
  88     // TODO: Put this into a more generic helper, could be useful elsewhere
  89     size_t pos = 0;
  90     while (pos < message.size())
  91     {
  92         size_t nextpos = message.find_first_of('\n', pos);
  93         impl_->text_.append(indent, ' ');
  94         impl_->text_.append(message.substr(pos, nextpos - pos));
  95         impl_->text_.append("\n");
  96         if (nextpos == std::string::npos)
  97         {
  98             break;
  99         }
 100         pos = nextpos + 1;
 101     }
 102 }
 103
 104 void MessageStringCollector::finishContext()
 105 {
 106     GMX_RELEASE_ASSERT(!impl_->contexts_.empty(), "finishContext() called without context");
 107     impl_->contexts_.pop_back();
 108     if (impl_->prevContext_ > impl_->contexts_.size())
 109     {
 110         impl_->prevContext_ = impl_->contexts_.size();
 111     }
 112 }
 113
 114 void MessageStringCollector::clear()
 115 {
 116     impl_->contexts_.clear();
 117     impl_->text_.clear();
 118     impl_->prevContext_ = 0;
 119 }
 120
 121 bool MessageStringCollector::isEmpty() const
 122 {
 123     return impl_->text_.empty();
 124 }
 125
 126 std::string MessageStringCollector::toString() const
 127 {
 128     return impl_->text_;
 129 }
 130
 131 } // namespace gmx