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authorAndré Nusser <andre.nusser@googlemail.com>2020-04-10 17:27:43 +0200
committerAndré Nusser <andre.nusser@googlemail.com>2020-04-10 17:27:43 +0200
commitd3d333b252925fbc95dd39fe73c5ce12a0017228 (patch)
tree791a85d9f8c06ed8a98475a457e50bab16815009 /src/configfile.cc
parent2b35cdf78038a4ecc4573fcbef5fbad0c8403cb1 (diff)
Fix some of the issues raised in the review.
Diffstat (limited to 'src/configfile.cc')
-rw-r--r--src/configfile.cc117
1 files changed, 56 insertions, 61 deletions
diff --git a/src/configfile.cc b/src/configfile.cc
index 6747090..6a5f176 100644
--- a/src/configfile.cc
+++ b/src/configfile.cc
@@ -40,30 +40,26 @@
#include <hugin.hpp>
+namespace
+{
+
#if DG_PLATFORM == DG_PLATFORM_WINDOWS
-// TODO: lowercase name for non-defines, 'sep'?
-static const std::string SEP = "\\";
+const std::string sep = "\\";
#else
-static const std::string SEP = "/";
+const std::string sep = "/";
#endif
#if DG_PLATFORM == DG_PLATFORM_WINDOWS
-// TODO: lowercase name for non-defines, 'config_dir_name'?
-static const std::string CONFIGDIRNAME = "DrumGizmo";
+const std::string config_dir_name = "DrumGizmo";
#else
// TODO: Should we use this on OSX or is there another standard naming?
-static const std::string CONFIGDIRNAME = ".drumgizmo";
+// Response: Apparently this is also fine under OSX. There are also other conventions, but
+// one of the is dot files. However, feel free to check this, I am not sure about best practices.
+const std::string config_dir_name = ".drumgizmo";
#endif
-namespace
-{
-// TODO: Put sep and configdirname into anonymous namespace as well instead of
-// being static?
-// TODO: c++ style comments
-/**
- * Return the path containing the config files.
- */
+// Return the path containing the config files.
std::string getConfigPath()
{
// TODO: Move this utility function as a static function into directory.cc/h?
@@ -71,27 +67,23 @@ std::string getConfigPath()
std::string configpath;
#if DG_PLATFORM == DG_PLATFORM_WINDOWS
TCHAR szPath[256];
- // TODO: Compare return value to S_OK instead of using SUCCEEDED macro.
- if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE, NULL, 0, szPath)))
+ if(SHGetFolderPath(NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE, NULL, 0, szPath) == S_OK)
{
configpath = szPath;
}
#else
configpath = getenv("HOME");
#endif
- configpath += SEP;
- configpath += CONFIGDIRNAME;
+ configpath += sep;
+ configpath += config_dir_name;
return configpath;
}
-/**
- * Calling this makes sure that the config path exists
- */
+// Calling this makes sure that the config path exists
bool createConfigPath()
{
- // TODO: West-const ;)
- std::string const configpath = getConfigPath();
+ const std::string configpath = getConfigPath();
struct stat st;
if(stat(configpath.c_str(), &st) != 0)
@@ -115,8 +107,7 @@ bool createConfigPath()
} // end anonymous namespace
-// TODO: West-const ;)
-ConfigFile::ConfigFile(std::string const& filename)
+ConfigFile::ConfigFile(const std::string& filename)
: filename(filename)
{
}
@@ -147,12 +138,11 @@ bool ConfigFile::load()
// TODO: What happens if the parser encounters a windows newline on linux, or
// the other way round?
// Perhaps a unit-test for this would be in order?
- // TODO: What does line != "" do here? If the newline is part of the string,
- // I think it is redundant with getline returning false (end-of-file)
- // but if the newline character is stripped from the line, then this
- // will make the parser stop if an empty line is encountered in the
- // config file.
- while(std::getline(current_file, line) && line != "")
+ // Response: Why? Windows will probably not recognize the newline and Linux will
+ // read the \r into the end of the line (which was the bug we had). What's the
+ // point of testing undefined behavior? Do you want to catch it somehow and
+ // warn the user in this case or what's the idea?
+ while(std::getline(current_file, line))
{
if(!parseLine(line))
{
@@ -169,17 +159,17 @@ bool ConfigFile::save()
{
DEBUG(configfile, "Saving configuration...\n");
- // TODO: Check for failure? It wouldn't make sense to write the file if the
- // folder couldn't be created.
- createConfigPath();
+ if(!createConfigPath())
+ {
+ return false;
+ }
if(!open(std::ios_base::out))
{
return false;
}
- // TODO: West-const ;)
- for(auto const& value: values)
+ for(const auto& value: values)
{
current_file << value.first << ":" << value.second << std::endl;
}
@@ -212,7 +202,7 @@ bool ConfigFile::open(std::ios_base::openmode mode)
}
std::string filename = getConfigPath();
- filename += SEP;
+ filename += sep;
filename += filename;
DEBUG(configfile, "Opening config file '%s'\n", filename.c_str());
@@ -223,8 +213,7 @@ bool ConfigFile::open(std::ios_base::openmode mode)
bool ConfigFile::parseLine(const std::string& line)
{
- // TODO: enum class?
- enum State
+ enum class State
{
before_key,
in_key,
@@ -236,16 +225,22 @@ bool ConfigFile::parseLine(const std::string& line)
after_value,
};
+ // For empty lines, we parse them fine but don't do anything.
+ if(line == "")
+ {
+ return true;
+ }
+
std::string key;
std::string value;
- State state = before_key;
+ State state = State::before_key;
for(std::size_t pos = 0; pos < line.size(); ++pos)
{
auto c = line[pos];
switch(state)
{
- case before_key:
+ case State::before_key:
if(c == '#')
{
// Comment: Ignore line.
@@ -257,31 +252,31 @@ bool ConfigFile::parseLine(const std::string& line)
continue;
}
key += c;
- state = in_key;
+ state = State::in_key;
break;
- case in_key:
+ case State::in_key:
if(std::isspace(c))
{
- state = after_key;
+ state = State::after_key;
continue;
}
if(c == ':' || c == '=')
{
- state = before_value;
+ state = State::before_value;
continue;
}
key += c;
break;
- case after_key:
+ case State::after_key:
if(std::isspace(c))
{
continue;
}
if(c == ':' || c == '=')
{
- state = before_value;
+ state = State::before_value;
continue;
}
ERR(configfile,
@@ -290,60 +285,60 @@ bool ConfigFile::parseLine(const std::string& line)
line.c_str());
return false;
- case before_value:
+ case State::before_value:
if(std::isspace(c))
{
continue;
}
if(c == '\'')
{
- state = in_value_single_quoted;
+ state = State::in_value_single_quoted;
continue;
}
if(c == '"')
{
- state = in_value_double_quoted;
+ state = State::in_value_double_quoted;
continue;
}
value += c;
- state = in_value;
+ state = State::in_value;
break;
- case in_value:
+ case State::in_value:
if(std::isspace(c))
{
- state = after_value;
+ state = State::after_value;
continue;
}
if(c == '#')
{
// Comment: Ignore the rest of the line.
pos = line.size();
- state = after_value;
+ state = State::after_value;
continue;
}
value += c;
break;
- case in_value_single_quoted:
+ case State::in_value_single_quoted:
if(c == '\'')
{
- state = after_value;
+ state = State::after_value;
continue;
}
value += c;
break;
- case in_value_double_quoted:
+ case State::in_value_double_quoted:
if(c == '"')
{
- state = after_value;
+ state = State::after_value;
continue;
}
value += c;
break;
- case after_value:
+ case State::after_value:
if(std::isspace(c))
{
continue;
@@ -362,7 +357,7 @@ bool ConfigFile::parseLine(const std::string& line)
}
}
- if(state == before_key)
+ if(state == State::before_key)
{
// Line did not contain any data (empty or comment)
return true;
@@ -370,7 +365,7 @@ bool ConfigFile::parseLine(const std::string& line)
// If state == in_value_XXX_quoted here, the string was not terminated.
// If state == before_value it means that the value is empty.
- if(state != after_value && state != in_value && state != before_value)
+ if(state != State::after_value && state != State::in_value && state != State::before_value)
{
ERR(configfile, "Malformed line: '%s'", line.c_str());
return false;