Settings: Added an 'append' command line flag that allows the user to provide extra information about functions. See ticket #260

src/cppcheck.cpp

@@ -114,6 +114,10 @@ std::string CppCheck::parseFromArgs(int argc, const char* const argv[])
         else if (strcmp(argv[i], "--unused-functions") == 0)
             _settings._unusedFunctions = true;
 
+        // Append userdefined code to checked source code
+        else if (strncmp(argv[i], "--append=", 9) == 0)
+            _settings.append(9 + argv[i]);
+
 #ifdef __GNUC__
         // show timing information..
         else if (strcmp(argv[i], "--showtime") == 0)
@@ -294,15 +298,18 @@ std::string CppCheck::parseFromArgs(int argc, const char* const argv[])
         oss <<   "Cppcheck - A tool for static C/C++ code analysis\n"
         "\n"
         "Syntax:\n"
-        "    cppcheck [--all] [--auto-dealloc file.lst] [--error-exitcode=[n]] [--force]\n"
-        "             [--help] [-Idir] [-j [jobs]] [--quiet] [--style] [--unused-functions]\n"
-        "             [--verbose] [--version] [--xml] [file or path1] [file or path] ...\n"
+        "    cppcheck [--all] [--append=file] [--auto-dealloc file.lst]\n"
+        "             [--error-exitcode=[n]] [--force] [--help] [-Idir] [-j [jobs]]\n"
+        "             [--quiet] [--style] [--unused-functions] [--verbose] [--version]\n"
+        "             [--xml] [file or path1] [file or path] ...\n"
         "\n"
         "If path is given instead of filename, *.cpp, *.cxx, *.cc, *.c++ and *.c files\n"
         "are checked recursively from given directory.\n\n"
         "Options:\n"
         "    -a, --all            Make the checking more sensitive. More bugs are\n"
         "                         detected, but there are also more false positives\n"
+        "    --append=file        This allows you to provide information about\n"
+        "                         functions by providing an implementation for these.\n"
         "    --auto-dealloc file  Suppress warnings about classes that have automatic\n"
         "                         deallocation.\n"
         "                         The classnames must be provided in plain text - one\n"
@@ -413,7 +420,7 @@ unsigned int CppCheck::check()
                 if (_settings._errorsOnly == false && it != configurations.begin())
                     _errorLogger->reportOut(std::string("Checking ") + fname + ": " + cfg + std::string("..."));
 
-                checkFile(codeWithoutCfg, _filenames[c].c_str());
+                checkFile(codeWithoutCfg + _settings.append(), _filenames[c].c_str());
                 ++checkCount;
             }
         }

src/settings.cpp

@@ -19,6 +19,7 @@
 #include "settings.h"
 
 #include <algorithm>
+#include <fstream>
 
 Settings::Settings()
 {
@@ -35,6 +36,7 @@ Settings::Settings()
 #ifdef __GNUC__
     _showtime = false;
 #endif
+    _append = "";
 }
 
 Settings::~Settings()
@@ -67,3 +69,19 @@ bool Settings::isAutoDealloc(const char classname[]) const
     return (std::find(_autoDealloc.begin(), _autoDealloc.end(), classname) != _autoDealloc.end());
 }
 
+
+void Settings::append(const std::string &filename)
+{
+    _append = "\n";
+    std::ifstream fin(filename.c_str());
+    std::string line;
+    while (std::getline(fin, line))
+    {
+        _append += line + "\n";
+    }
+}
+
+std::string Settings::append() const
+{
+    return _append;
+}

src/settings.h

@@ -38,6 +38,9 @@ private:
     /** classes that are automaticly deallocated */
     std::list<std::string> _autoDealloc;
 
+    /** Code to append in the checks */
+    std::string _append;
+
 public:
     Settings();
     virtual ~Settings();
@@ -86,6 +89,12 @@ public:
 
     /** is a class automaticly deallocated? */
     bool isAutoDealloc(const char classname[]) const;
+
+    /** assign append code */
+    void append(const std::string &filename);
+
+    /** get append code */
+    std::string append() const;
 };
 
 /// @}