Method Scan

Source/cmDependsC.cxx:344–393

}

void cmDependsC::Scan(std::istream& is, std::string const& directory,
                      std::string const& fullName)
{
  cmIncludeLines& newCacheEntry = this->FileCache[fullName];
  newCacheEntry.Used = true;

  // Read one line at a time.
  std::string line;
  while (cmSystemTools::GetLineFromStream(is, line)) {
    // Transform the line content first.
    if (!this->TransformRules.empty()) {
      this->TransformLine(line);
    }

    // Match include directives.
    if (this->IncludeRegexLine.find(line)) {
      // Get the file being included.
      UnscannedEntry entry;
      entry.FileName = this->IncludeRegexLine.match(2);
      cmSystemTools::ConvertToUnixSlashes(entry.FileName);
      if (this->IncludeRegexLine.match(3) == "\"" &&
          !cmSystemTools::FileIsFullPath(entry.FileName)) {
        // This was a double-quoted include with a relative path.  We
        // must check for the file in the directory containing the
        // file we are scanning.
        entry.QuotedLocation =
          cmSystemTools::CollapseFullPath(entry.FileName, directory);
      }

      // Queue the file if it has not yet been encountered and it
      // matches the regular expression for recursive scanning.  Note
      // that this check does not account for the possibility of two
      // headers with the same name in different directories when one
      // is included by double-quotes and the other by angle brackets.
      // It also does not work properly if two header files with the same
      // name exist in different directories, and both are included from a
      // file their own directory by simply using "filename.h" (#12619)
      // This kind of problem will be fixed when a more
      // preprocessor-like implementation of this scanner is created.
      if (this->IncludeRegexScan.find(entry.FileName)) {
        newCacheEntry.UnscannedEntries.push_back(entry);
        if (this->Encountered.find(entry.FileName) ==
            this->Encountered.end()) {
          this->Encountered.insert(entry.FileName);
          this->Unscanned.push(entry);
        }
      }
    }
  }
}

void cmDependsC::SetupTransforms()
{