diff --git a/SystemTools.cxx b/SystemTools.cxx
index 87da80e8e076034920cf91a1d152ac1bf50d267d..1b1f7982d6b712b580a6a5dfc652dbfb9dc7b9a9 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -623,7 +623,9 @@ const char* SystemToolsStatic::GetEnvBuffered(const char* key)
std::string env;
if (SystemTools::GetEnv(key, env)) {
std::string& menv = SystemTools::Statics->EnvMap[key];
- menv = std::move(env);
+ if (menv != env) {
+ menv = std::move(env);
+ }
return menv.c_str();
}
return KWSYS_NULLPTR;
@@ -2810,27 +2812,15 @@ std::string SystemToolsStatic::FindName(
SystemTools::GetPath(path);
}
// now add the additional paths
- {
- for (std::vector<std::string>::const_iterator i = userPaths.begin();
- i != userPaths.end(); ++i) {
- path.push_back(*i);
- }
- }
- // Add a trailing slash to all paths to aid the search process.
- {
- for (std::vector<std::string>::iterator i = path.begin(); i != path.end();
- ++i) {
- std::string& p = *i;
- if (p.empty() || p.back() != '/') {
- p += "/";
- }
- }
- }
+ path.reserve(path.size() + userPaths.size());
+ path.insert(path.end(), userPaths.begin(), userPaths.end());
// now look for the file
std::string tryPath;
- for (std::vector<std::string>::const_iterator p = path.begin();
- p != path.end(); ++p) {
- tryPath = *p;
+ for (std::string const& p : path) {
+ tryPath = p;
+ if (tryPath.empty() || tryPath.back() != '/') {
+ tryPath += '/';
+ }
tryPath += name;
if (SystemTools::FileExists(tryPath)) {
return tryPath;
@@ -2904,14 +2894,13 @@ std::string SystemTools::FindProgram(const std::string& name,
// the end of it
// on windows try .com then .exe
if (name.size() <= 3 || name[name.size() - 4] != '.') {
- extensions.push_back(".com");
- extensions.push_back(".exe");
+ extensions.emplace_back(".com");
+ extensions.emplace_back(".exe");
// first try with extensions if the os supports them
- for (std::vector<std::string>::iterator i = extensions.begin();
- i != extensions.end(); ++i) {
+ for (std::string const& ext : extensions) {
tryPath = name;
- tryPath += *i;
+ tryPath += ext;
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
@@ -2930,43 +2919,33 @@ std::string SystemTools::FindProgram(const std::string& name,
SystemTools::GetPath(path);
}
// now add the additional paths
- {
- for (std::vector<std::string>::const_iterator i = userPaths.begin();
- i != userPaths.end(); ++i) {
- path.push_back(*i);
- }
- }
+ path.reserve(path.size() + userPaths.size());
+ path.insert(path.end(), userPaths.begin(), userPaths.end());
// Add a trailing slash to all paths to aid the search process.
- {
- for (std::vector<std::string>::iterator i = path.begin(); i != path.end();
- ++i) {
- std::string& p = *i;
- if (p.empty() || p.back() != '/') {
- p += "/";
- }
+ for (std::string& p : path) {
+ if (p.empty() || p.back() != '/') {
+ p += '/';
}
}
// Try each path
- for (std::vector<std::string>::iterator p = path.begin(); p != path.end();
- ++p) {
+ for (std::string& p : path) {
#ifdef _WIN32
// Remove double quotes from the path on windows
- SystemTools::ReplaceString(*p, "\"", "");
+ SystemTools::ReplaceString(p, "\"", "");
#endif
#if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
// first try with extensions
- for (std::vector<std::string>::iterator ext = extensions.begin();
- ext != extensions.end(); ++ext) {
- tryPath = *p;
+ for (std::string const& ext : extensions) {
+ tryPath = p;
tryPath += name;
- tryPath += *ext;
+ tryPath += ext;
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
}
#endif
// now try it without them
- tryPath = *p;
+ tryPath = p;
tryPath += name;
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
@@ -2980,10 +2959,9 @@ std::string SystemTools::FindProgram(const std::vector<std::string>& names,
const std::vector<std::string>& path,
bool noSystemPath)
{
- for (std::vector<std::string>::const_iterator it = names.begin();
- it != names.end(); ++it) {
+ for (std::string const& name : names) {
// Try to find the program.
- std::string result = SystemTools::FindProgram(*it, path, noSystemPath);
+ std::string result = SystemTools::FindProgram(name, path, noSystemPath);
if (!result.empty()) {
return result;
}
@@ -3008,27 +2986,18 @@ std::string SystemTools::FindLibrary(const std::string& name,
std::vector<std::string> path;
SystemTools::GetPath(path);
// now add the additional paths
- {
- for (std::vector<std::string>::const_iterator i = userPaths.begin();
- i != userPaths.end(); ++i) {
- path.push_back(*i);
- }
- }
+ path.reserve(path.size() + userPaths.size());
+ path.insert(path.end(), userPaths.begin(), userPaths.end());
// Add a trailing slash to all paths to aid the search process.
- {
- for (std::vector<std::string>::iterator i = path.begin(); i != path.end();
- ++i) {
- std::string& p = *i;
- if (p.empty() || p.back() != '/') {
- p += "/";
- }
+ for (std::string& p : path) {
+ if (p.empty() || p.back() != '/') {
+ p += '/';
}
}
std::string tryPath;
- for (std::vector<std::string>::const_iterator p = path.begin();
- p != path.end(); ++p) {
+ for (std::string const& p : path) {
#if defined(__APPLE__)
- tryPath = *p;
+ tryPath = p;
tryPath += name;
tryPath += ".framework";
if (SystemTools::FileIsDirectory(tryPath)) {
@@ -3036,42 +3005,42 @@ std::string SystemTools::FindLibrary(const std::string& name,
}
#endif
#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__MINGW32__)
- tryPath = *p;
+ tryPath = p;
tryPath += name;
tryPath += ".lib";
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
#else
- tryPath = *p;
+ tryPath = p;
tryPath += "lib";
tryPath += name;
tryPath += ".so";
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
- tryPath = *p;
+ tryPath = p;
tryPath += "lib";
tryPath += name;
tryPath += ".a";
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
- tryPath = *p;
+ tryPath = p;
tryPath += "lib";
tryPath += name;
tryPath += ".sl";
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
- tryPath = *p;
+ tryPath = p;
tryPath += "lib";
tryPath += name;
tryPath += ".dylib";
if (SystemTools::FileExists(tryPath, true)) {
return SystemTools::CollapseFullPath(tryPath);
}
- tryPath = *p;
+ tryPath = p;
tryPath += "lib";
tryPath += name;
tryPath += ".dll";
@@ -3333,9 +3302,8 @@ bool SystemTools::FindProgramPath(const char* argv0, std::string& pathOut,
msg << " argv[0] = \"" << argv0 << "\"\n";
}
msg << " Attempted paths:\n";
- std::vector<std::string>::iterator i;
- for (i = failures.begin(); i != failures.end(); ++i) {
- msg << " \"" << *i << "\"\n";
+ for (std::string const& ff : failures) {
+ msg << " \"" << ff << "\"\n";
}
errorMsg = msg.str();
return false;
@@ -3558,28 +3526,26 @@ std::string SystemTools::RelativePath(const std::string& local,
// for each entry that is not common in the local path
// add a ../ to the finalpath array, this gets us out of the local
// path into the remote dir
- for (unsigned int i = 0; i < localSplit.size(); ++i) {
- if (!localSplit[i].empty()) {
- finalPath.push_back("../");
+ for (std::string const& lp : localSplit) {
+ if (!lp.empty()) {
+ finalPath.emplace_back("../");
}
}
// for each entry that is not common in the remote path add it
// to the final path.
- for (std::vector<std::string>::iterator vit = remoteSplit.begin();
- vit != remoteSplit.end(); ++vit) {
- if (!vit->empty()) {
- finalPath.push_back(*vit);
+ for (std::string const& rp : remoteSplit) {
+ if (!rp.empty()) {
+ finalPath.push_back(rp);
}
}
std::string relativePath; // result string
// now turn the array of directories into a unix path by puttint /
// between each entry that does not already have one
- for (std::vector<std::string>::iterator vit1 = finalPath.begin();
- vit1 != finalPath.end(); ++vit1) {
+ for (std::string const& fp : finalPath) {
if (!relativePath.empty() && relativePath.back() != '/') {
- relativePath += "/";
+ relativePath += '/';
}
- relativePath += *vit1;
+ relativePath += fp;
}
return relativePath;
}
@@ -3727,8 +3693,7 @@ std::string SystemTools::JoinPath(
// Construct result in a single string.
std::string result;
size_t len = 0;
- std::vector<std::string>::const_iterator i;
- for (i = first; i != last; ++i) {
+ for (std::vector<std::string>::const_iterator i = first; i != last; ++i) {
len += 1 + i->size();
}
result.reserve(len);