cmDepends: all members accept std::string arguments

Most `const char*` arguments converted to `const std::string&`
in `cmDepends` and derived classes.
In addition performed minor code cleanup.

10 files changed, 76 insertions, 73 deletions

diff --git a/Source/cmDepends.cxx b/Source/cmDepends.cxx
index 2acb015..fae3d9b 100644
--- a/Source/cmDepends.cxx
+++ b/Source/cmDepends.cxx
@@ -13,7 +13,7 @@
 #include <string.h>
 #include <utility>
 
-cmDepends::cmDepends(cmLocalGenerator* lg, const char* targetDir)
+cmDepends::cmDepends(cmLocalGenerator* lg, const std::string& targetDir)
   : LocalGenerator(lg)
   , TargetDirectory(targetDir)
   , Dependee(new char[MaxPath])
@@ -65,12 +65,13 @@ bool cmDepends::Finalize(std::ostream& /*unused*/, std::ostream& /*unused*/)
   return true;
 }
 
-bool cmDepends::Check(const char* makeFile, const char* internalFile,
+bool cmDepends::Check(const std::string& makeFile,
+                      const std::string& internalFile,
                       std::map<std::string, DependencyVector>& validDeps)
 {
   // Check whether dependencies must be regenerated.
   bool okay = true;
-  cmsys::ifstream fin(internalFile);
+  cmsys::ifstream fin(internalFile.c_str());
   if (!(fin && this->CheckDependencies(fin, internalFile, validDeps))) {
     // Clear all dependencies so they will be regenerated.
     this->Clear(makeFile);
@@ -81,7 +82,7 @@ bool cmDepends::Check(const char* makeFile, const char* internalFile,
   return okay;
 }
 
-void cmDepends::Clear(const char* file)
+void cmDepends::Clear(const std::string& file)
 {
   // Print verbose output.
   if (this->Verbose) {
@@ -107,7 +108,7 @@ bool cmDepends::WriteDependencies(const std::set<std::string>& /*unused*/,
 }
 
 bool cmDepends::CheckDependencies(
-  std::istream& internalDepends, const char* internalDependsFileName,
+  std::istream& internalDepends, const std::string& internalDependsFileName,
   std::map<std::string, DependencyVector>& validDeps)
 {
   // Parse dependencies from the stream.  If any dependee is missing
@@ -194,8 +195,8 @@ bool cmDepends::CheckDependencies(
         // The dependee exists, but the depender doesn't. Regenerate if the
         // internalDepends file is older than the dependee.
         int result = 0;
-        if ((!this->FileComparison->FileTimeCompare(internalDependsFileName,
-                                                    dependee, &result) ||
+        if ((!this->FileComparison->FileTimeCompare(
+               internalDependsFileName.c_str(), dependee, &result) ||
              result < 0)) {
           // The depends-file is older than the dependee.
           regenerate = true;
diff --git a/Source/cmDepends.h b/Source/cmDepends.h
index 705d215..b0b5bb5 100644
--- a/Source/cmDepends.h
+++ b/Source/cmDepends.h
@@ -29,7 +29,7 @@ class cmDepends
 public:
   /** Instances need to know the build directory name and the relative
       path from the build directory to the target file.  */
-  cmDepends(cmLocalGenerator* lg = nullptr, const char* targetDir = "");
+  cmDepends(cmLocalGenerator* lg = nullptr, const std::string& targetDir = "");
 
   /** Set the local generator for the directory in which we are
       scanning dependencies.  This is not a full local generator; it
@@ -41,7 +41,10 @@ public:
   void SetLanguage(const std::string& lang) { this->Language = lang; }
 
   /** Set the target build directory.  */
-  void SetTargetDirectory(const char* dir) { this->TargetDirectory = dir; }
+  void SetTargetDirectory(const std::string& dir)
+  {
+    this->TargetDirectory = dir;
+  }
 
   /** should this be verbose in its output */
   void SetVerbose(bool verb) { this->Verbose = verb; }
@@ -61,11 +64,11 @@ public:
       they must be generated Clear has already been called to wipe out
       the old dependencies.
       Dependencies which are still valid will be stored in validDeps. */
-  bool Check(const char* makeFile, const char* internalFile,
+  bool Check(const std::string& makeFile, const std::string& internalFile,
              std::map<std::string, DependencyVector>& validDeps);
 
   /** Clear dependencies for the target file so they will be regenerated.  */
-  void Clear(const char* file);
+  void Clear(const std::string& file);
 
   /** Set the file comparison object */
   void SetFileComparison(cmFileTimeComparison* fc)
@@ -85,7 +88,7 @@ protected:
   // Return false if dependencies must be regenerated and true
   // otherwise.
   virtual bool CheckDependencies(
-    std::istream& internalDepends, const char* internalDependsFileName,
+    std::istream& internalDepends, const std::string& internalDependsFileName,
     std::map<std::string, DependencyVector>& validDeps);
 
   // Finalize the dependency information for the target.
diff --git a/Source/cmDependsC.cxx b/Source/cmDependsC.cxx
index 072d116..f6ac4f2 100644
--- a/Source/cmDependsC.cxx
+++ b/Source/cmDependsC.cxx
@@ -24,7 +24,7 @@ cmDependsC::cmDependsC()
 }
 
 cmDependsC::cmDependsC(
-  cmLocalGenerator* lg, const char* targetDir, const std::string& lang,
+  cmLocalGenerator* lg, const std::string& targetDir, const std::string& lang,
   const std::map<std::string, DependencyVector>* validDeps)
   : cmDepends(lg, targetDir)
   , ValidDeps(validDeps)
@@ -53,8 +53,8 @@ cmDependsC::cmDependsC(
   }
 
   this->IncludeRegexLine.compile(INCLUDE_REGEX_LINE);
-  this->IncludeRegexScan.compile(scanRegex.c_str());
-  this->IncludeRegexComplain.compile(complainRegex.c_str());
+  this->IncludeRegexScan.compile(scanRegex);
+  this->IncludeRegexComplain.compile(complainRegex);
   this->IncludeRegexLineString = INCLUDE_REGEX_LINE_MARKER INCLUDE_REGEX_LINE;
   this->IncludeRegexScanString = INCLUDE_REGEX_SCAN_MARKER;
   this->IncludeRegexScanString += scanRegex;
@@ -212,7 +212,7 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
               // Scan this file for new dependencies.  Pass the directory
               // containing the file to handle double-quote includes.
               std::string dir = cmSystemTools::GetFilenamePath(fullName);
-              this->Scan(fin, dir.c_str(), fullName);
+              this->Scan(fin, dir, fullName);
             } else {
               // Skip file with encoding we do not implement.
             }
@@ -342,7 +342,7 @@ void cmDependsC::WriteCacheFile() const
   }
 }
 
-void cmDependsC::Scan(std::istream& is, const char* directory,
+void cmDependsC::Scan(std::istream& is, const std::string& directory,
                       const std::string& fullName)
 {
   cmIncludeLines* newCacheEntry = new cmIncludeLines;
@@ -418,7 +418,7 @@ void cmDependsC::SetupTransforms()
       sep = "|";
     }
     xform += ")[ \t]*\\(([^),]*)\\)";
-    this->IncludeRegexTransform.compile(xform.c_str());
+    this->IncludeRegexTransform.compile(xform);
 
     // Build a string that encodes all transformation rules and will
     // change when rules are changed.
@@ -460,11 +460,11 @@ void cmDependsC::TransformLine(std::string& line)
   // Construct the transformed line.
   std::string newline = this->IncludeRegexTransform.match(1);
   std::string arg = this->IncludeRegexTransform.match(4);
-  for (const char* c = tri->second.c_str(); *c; ++c) {
-    if (*c == '%') {
+  for (char c : tri->second) {
+    if (c == '%') {
       newline += arg;
     } else {
-      newline += *c;
+      newline += c;
     }
   }
 
diff --git a/Source/cmDependsC.h b/Source/cmDependsC.h
index f833888..af2b06e 100644
--- a/Source/cmDependsC.h
+++ b/Source/cmDependsC.h
@@ -28,7 +28,7 @@ public:
   /** Checking instances need to know the build directory name and the
       relative path from the build directory to the target file.  */
   cmDependsC();
-  cmDependsC(cmLocalGenerator* lg, const char* targetDir,
+  cmDependsC(cmLocalGenerator* lg, const std::string& targetDir,
              const std::string& lang,
              const std::map<std::string, DependencyVector>* validDeps);
 
@@ -42,7 +42,7 @@ protected:
                          std::ostream& internalDepends) override;
 
   // Method to scan a single file.
-  void Scan(std::istream& is, const char* directory,
+  void Scan(std::istream& is, const std::string& directory,
             const std::string& fullName);
 
   // Regular expression to identify C preprocessor include directives.
diff --git a/Source/cmDependsFortran.cxx b/Source/cmDependsFortran.cxx
index e51f81e..6c5f647 100644
--- a/Source/cmDependsFortran.cxx
+++ b/Source/cmDependsFortran.cxx
@@ -7,7 +7,6 @@
 #include <iostream>
 #include <map>
 #include <stdlib.h>
-#include <string.h>
 #include <utility>
 
 #include "cmAlgorithms.h"
@@ -54,7 +53,8 @@ public:
   typedef std::map<std::string, cmFortranSourceInfo> ObjectInfoMap;
   ObjectInfoMap ObjectInfo;
 
-  cmFortranSourceInfo& CreateObjectInfo(const char* obj, const char* src)
+  cmFortranSourceInfo& CreateObjectInfo(const std::string& obj,
+                                        const std::string& src)
   {
     std::map<std::string, cmFortranSourceInfo>::iterator i =
       this->ObjectInfo.find(obj);
@@ -121,8 +121,7 @@ bool cmDependsFortran::WriteDependencies(const std::set<std::string>& sources,
   bool okay = true;
   for (std::string const& src : sources) {
     // Get the information object for this source.
-    cmFortranSourceInfo& info =
-      this->Internal->CreateObjectInfo(obj.c_str(), src.c_str());
+    cmFortranSourceInfo& info = this->Internal->CreateObjectInfo(obj, src);
 
     // Create the parser object. The constructor takes info by reference,
     // so we may look into the resulting objects later.
@@ -153,7 +152,7 @@ bool cmDependsFortran::Finalize(std::ostream& makeDepends,
   this->LocateModules();
 
   // Get the directory in which stamp files will be stored.
-  const char* stamp_dir = this->TargetDirectory.c_str();
+  const std::string& stamp_dir = this->TargetDirectory;
 
   // Get the directory in which module files will be created.
   cmMakefile* mf = this->LocalGenerator->GetMakefile();
@@ -167,9 +166,8 @@ bool cmDependsFortran::Finalize(std::ostream& makeDepends,
   typedef cmDependsFortranInternals::ObjectInfoMap ObjectInfoMap;
   ObjectInfoMap const& objInfo = this->Internal->ObjectInfo;
   for (auto const& i : objInfo) {
-    if (!this->WriteDependenciesReal(i.first.c_str(), i.second, mod_dir,
-                                     stamp_dir, makeDepends,
-                                     internalDepends)) {
+    if (!this->WriteDependenciesReal(i.first, i.second, mod_dir, stamp_dir,
+                                     makeDepends, internalDepends)) {
       return false;
     }
   }
@@ -256,22 +254,22 @@ void cmDependsFortran::LocateModules()
     std::string fname = targetDir + "/fortran.internal";
     cmsys::ifstream fin(fname.c_str());
     if (fin) {
-      this->MatchRemoteModules(fin, targetDir.c_str());
+      this->MatchRemoteModules(fin, targetDir);
     }
   }
 }
 
 void cmDependsFortran::MatchLocalModules()
 {
-  const char* stampDir = this->TargetDirectory.c_str();
+  std::string const& stampDir = this->TargetDirectory;
   std::set<std::string> const& provides = this->Internal->TargetProvides;
   for (std::string const& i : provides) {
-    this->ConsiderModule(i.c_str(), stampDir);
+    this->ConsiderModule(i, stampDir);
   }
 }
 
 void cmDependsFortran::MatchRemoteModules(std::istream& fin,
-                                          const char* stampDir)
+                                          const std::string& stampDir)
 {
   std::string line;
   bool doing_provides = false;
@@ -300,7 +298,8 @@ void cmDependsFortran::MatchRemoteModules(std::istream& fin,
   }
 }
 
-void cmDependsFortran::ConsiderModule(const char* name, const char* stampDir)
+void cmDependsFortran::ConsiderModule(const std::string& name,
+                                      const std::string& stampDir)
 {
   // Locate each required module.
   typedef cmDependsFortranInternals::TargetRequiresMap TargetRequiresMap;
@@ -317,17 +316,17 @@ void cmDependsFortran::ConsiderModule(const char* name, const char* stampDir)
   }
 }
 
-bool cmDependsFortran::WriteDependenciesReal(const char* obj,
+bool cmDependsFortran::WriteDependenciesReal(std::string const& obj,
                                              cmFortranSourceInfo const& info,
                                              std::string const& mod_dir,
-                                             const char* stamp_dir,
+                                             std::string const& stamp_dir,
                                              std::ostream& makeDepends,
                                              std::ostream& internalDepends)
 {
   typedef cmDependsFortranInternals::TargetRequiresMap TargetRequiresMap;
 
   // Get the source file for this object.
-  const char* src = info.Source.c_str();
+  std::string const& src = info.Source;
 
   // Write the include dependencies to the output stream.
   std::string binDir = this->LocalGenerator->GetBinaryDirectory();
@@ -502,8 +501,7 @@ bool cmDependsFortran::CopyModule(const std::vector<std::string>& args)
   cmFortranModuleAppendUpperLower(cmSystemTools::GetFilenameName(mod),
                                   mod_upper, mod_lower);
   if (cmSystemTools::FileExists(mod_upper, true)) {
-    if (cmDependsFortran::ModulesDiffer(mod_upper.c_str(), stamp.c_str(),
-                                        compilerId.c_str())) {
+    if (cmDependsFortran::ModulesDiffer(mod_upper, stamp, compilerId)) {
       if (!cmSystemTools::CopyFileAlways(mod_upper, stamp)) {
         std::cerr << "Error copying Fortran module from \"" << mod_upper
                   << "\" to \"" << stamp << "\".\n";
@@ -513,8 +511,7 @@ bool cmDependsFortran::CopyModule(const std::vector<std::string>& args)
     return true;
   }
   if (cmSystemTools::FileExists(mod_lower, true)) {
-    if (cmDependsFortran::ModulesDiffer(mod_lower.c_str(), stamp.c_str(),
-                                        compilerId.c_str())) {
+    if (cmDependsFortran::ModulesDiffer(mod_lower, stamp, compilerId)) {
       if (!cmSystemTools::CopyFileAlways(mod_lower, stamp)) {
         std::cerr << "Error copying Fortran module from \"" << mod_lower
                   << "\" to \"" << stamp << "\".\n";
@@ -581,9 +578,9 @@ static bool cmFortranStreamsDiffer(std::istream& ifs1, std::istream& ifs2)
   return true;
 }
 
-bool cmDependsFortran::ModulesDiffer(const char* modFile,
-                                     const char* stampFile,
-                                     const char* compilerId)
+bool cmDependsFortran::ModulesDiffer(const std::string& modFile,
+                                     const std::string& stampFile,
+                                     const std::string& compilerId)
 {
   /*
   gnu >= 4.9:
@@ -617,16 +614,17 @@ bool cmDependsFortran::ModulesDiffer(const char* modFile,
    * source is compiled twice
    *   -SunPro
    */
-  if (strcmp(compilerId, "SunPro") == 0) {
+  if (compilerId == "SunPro") {
     return cmSystemTools::FilesDiffer(modFile, stampFile);
   }
 
 #if defined(_WIN32) || defined(__CYGWIN__)
-  cmsys::ifstream finModFile(modFile, std::ios::in | std::ios::binary);
-  cmsys::ifstream finStampFile(stampFile, std::ios::in | std::ios::binary);
+  cmsys::ifstream finModFile(modFile.c_str(), std::ios::in | std::ios::binary);
+  cmsys::ifstream finStampFile(stampFile.c_str(),
+                               std::ios::in | std::ios::binary);
 #else
-  cmsys::ifstream finModFile(modFile);
-  cmsys::ifstream finStampFile(stampFile);
+  cmsys::ifstream finModFile(modFile.c_str());
+  cmsys::ifstream finStampFile(stampFile.c_str());
 #endif
   if (!finModFile || !finStampFile) {
     // At least one of the files does not exist.  The modules differ.
@@ -641,7 +639,7 @@ bool cmDependsFortran::ModulesDiffer(const char* modFile,
    * Eat the stream content until all recompile only related changes
    * are left behind.
    */
-  if (strcmp(compilerId, "GNU") == 0) {
+  if (compilerId == "GNU") {
     // GNU Fortran 4.9 and later compress .mod files with gzip
     // but also do not include a date so we can fall through to
     // compare them without skipping any prefix.
@@ -664,7 +662,7 @@ bool cmDependsFortran::ModulesDiffer(const char* modFile,
         return true;
       }
     }
-  } else if (strcmp(compilerId, "Intel") == 0) {
+  } else if (compilerId == "Intel") {
     const char seq[2] = { '\n', '\0' };
     const int seqlen = 2;
 
diff --git a/Source/cmDependsFortran.h b/Source/cmDependsFortran.h
index 5d96dd4..f5f5be2 100644
--- a/Source/cmDependsFortran.h
+++ b/Source/cmDependsFortran.h
@@ -44,8 +44,9 @@ public:
 
   /** Determine if a mod file and the corresponding mod.stamp file
       are representing  different module information. */
-  static bool ModulesDiffer(const char* modFile, const char* stampFile,
-                            const char* compilerId);
+  static bool ModulesDiffer(const std::string& modFile,
+                            const std::string& stampFile,
+                            const std::string& compilerId);
 
 protected:
   // Finalize the dependency information for the target.
@@ -55,8 +56,8 @@ protected:
   // Find all the modules required by the target.
   void LocateModules();
   void MatchLocalModules();
-  void MatchRemoteModules(std::istream& fin, const char* stampDir);
-  void ConsiderModule(const char* name, const char* stampDir);
+  void MatchRemoteModules(std::istream& fin, const std::string& stampDir);
+  void ConsiderModule(const std::string& name, const std::string& stampDir);
   bool FindModule(std::string const& name, std::string& module);
 
   // Implement writing/checking methods required by superclass.
@@ -65,8 +66,10 @@ protected:
                          std::ostream& internalDepends) override;
 
   // Actually write the dependencies to the streams.
-  bool WriteDependenciesReal(const char* obj, cmFortranSourceInfo const& info,
-                             std::string const& mod_dir, const char* stamp_dir,
+  bool WriteDependenciesReal(std::string const& obj,
+                             cmFortranSourceInfo const& info,
+                             std::string const& mod_dir,
+                             std::string const& stamp_dir,
                              std::ostream& makeDepends,
                              std::ostream& internalDepends);
 
diff --git a/Source/cmDependsJava.cxx b/Source/cmDependsJava.cxx
index 29938ba..b44b3a2 100644
--- a/Source/cmDependsJava.cxx
+++ b/Source/cmDependsJava.cxx
@@ -27,7 +27,8 @@ bool cmDependsJava::WriteDependencies(const std::set<std::string>& sources,
 }
 
 bool cmDependsJava::CheckDependencies(
-  std::istream& /*internalDepends*/, const char* /*internalDependsFileName*/,
+  std::istream& /*internalDepends*/,
+  const std::string& /*internalDependsFileName*/,
   std::map<std::string, DependencyVector>& /*validDeps*/)
 {
   return true;
diff --git a/Source/cmDependsJava.h b/Source/cmDependsJava.h
index d070840..1928c51 100644
--- a/Source/cmDependsJava.h
+++ b/Source/cmDependsJava.h
@@ -33,7 +33,7 @@ protected:
                          const std::string& file, std::ostream& makeDepends,
                          std::ostream& internalDepends) override;
   bool CheckDependencies(
-    std::istream& internalDepends, const char* internalDependsFileName,
+    std::istream& internalDepends, const std::string& internalDependsFileName,
     std::map<std::string, DependencyVector>& validDeps) override;
 };
 
diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index 707a1b5..b31855d 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -1333,8 +1333,8 @@ bool cmLocalUnixMakefileGenerator3::UpdateDependencies(const char* tgtInfo,
     // dependency vector. This means that in the normal case, when only
     // few or one file have been edited, then also only this one file is
     // actually scanned again, instead of all files for this target.
-    needRescanDependencies = !checker.Check(
-      dependFile.c_str(), internalDependFile.c_str(), validDependencies);
+    needRescanDependencies =
+      !checker.Check(dependFile, internalDependFile, validDependencies);
   }
 
   if (needRescanDependInfo || needRescanDirInfo || needRescanDependencies) {
@@ -1347,7 +1347,7 @@ bool cmLocalUnixMakefileGenerator3::UpdateDependencies(const char* tgtInfo,
                                        cmsysTerminal_Color_ForegroundBold,
                                      message.c_str(), true, color);
 
-    return this->ScanDependencies(dir.c_str(), validDependencies);
+    return this->ScanDependencies(dir, validDependencies);
   }
 
   // The dependencies are already up-to-date.
@@ -1355,7 +1355,7 @@ bool cmLocalUnixMakefileGenerator3::UpdateDependencies(const char* tgtInfo,
 }
 
 bool cmLocalUnixMakefileGenerator3::ScanDependencies(
-  const char* targetDir,
+  const std::string& targetDir,
   std::map<std::string, cmDepends::DependencyVector>& validDeps)
 {
   // Read the directory information file.
@@ -1393,12 +1393,9 @@ bool cmLocalUnixMakefileGenerator3::ScanDependencies(
     cmSystemTools::Error("Directory Information file not found");
   }
 
-  // create the file stream for the depends file
-  std::string dir = targetDir;
-
   // Open the make depends file.  This should be copy-if-different
   // because the make tool may try to reload it needlessly otherwise.
-  std::string ruleFileNameFull = dir;
+  std::string ruleFileNameFull = targetDir;
   ruleFileNameFull += "/depend.make";
   cmGeneratedFileStream ruleFileStream(
     ruleFileNameFull, false, this->GlobalGenerator->GetMakefileEncoding());
@@ -1410,7 +1407,7 @@ bool cmLocalUnixMakefileGenerator3::ScanDependencies(
   // Open the cmake dependency tracking file.  This should not be
   // copy-if-different because dependencies are re-scanned when it is
   // older than the DependInfo.cmake.
-  std::string internalRuleFileNameFull = dir;
+  std::string internalRuleFileNameFull = targetDir;
   internalRuleFileNameFull += "/depend.internal";
   cmGeneratedFileStream internalRuleFileStream(
     internalRuleFileNameFull, false,
@@ -1451,7 +1448,7 @@ bool cmLocalUnixMakefileGenerator3::ScanDependencies(
       scanner->SetFileComparison(
         this->GlobalGenerator->GetCMakeInstance()->GetFileComparison());
       scanner->SetLanguage(lang);
-      scanner->SetTargetDirectory(dir.c_str());
+      scanner->SetTargetDirectory(targetDir);
       scanner->Write(ruleFileStream, internalRuleFileStream);
 
       // free the scanner for this language
@@ -1720,7 +1717,7 @@ void cmLocalUnixMakefileGenerator3::ClearDependencies(cmMakefile* mf,
 
     // Clear the implicit dependency makefile.
     std::string dependFile = dir + "/depend.make";
-    clearer.Clear(dependFile.c_str());
+    clearer.Clear(dependFile);
 
     // Remove the internal dependency check file to force
     // regeneration.
diff --git a/Source/cmLocalUnixMakefileGenerator3.h b/Source/cmLocalUnixMakefileGenerator3.h
index ee6b37b..c0d0e13 100644
--- a/Source/cmLocalUnixMakefileGenerator3.h
+++ b/Source/cmLocalUnixMakefileGenerator3.h
@@ -245,7 +245,7 @@ protected:
 
   // Helper methods for dependency updates.
   bool ScanDependencies(
-    const char* targetDir,
+    const std::string& targetDir,
     std::map<std::string, cmDepends::DependencyVector>& validDeps);
   void CheckMultipleOutputs(bool verbose);