]> git.tdb.fi Git - builder.git/blobdiff - source/config.cpp
Save caches before starting the build
[builder.git] / source / config.cpp
index e7207ce8a249151a112afe6b6a4f393a7de82b9b..36e7870683b3bfed9e1474306ee8adde2ce13a84 100644 (file)
-#include <fstream>
-#include <msp/core/error.h>
-#include <msp/path/utils.h>
+#include <msp/core/maputils.h>
+#include <msp/fs/stat.h>
+#include <msp/fs/utils.h>
+#include <msp/io/file.h>
+#include <msp/io/print.h>
 #include <msp/time/utils.h>
 #include "builder.h"
 #include "config.h"
-#include "package.h"
+#include "sourcepackage.h"
 
 using namespace std;
 using namespace Msp;
 
-Config::Config(Package &p):
+Config::Config(SourcePackage &p):
        package(p),
-       freeze_mtime(false)
+       changed(false)
 { }
 
-/**
-Adds a configuration option.
-
-@param   n  Option name
-@param   v  Default value
-@param   d  Description
-*/
-void Config::add_option(const string &n, const string &v, const string &d)
+const Config::Option &Config::add_option(const Feature &f)
 {
-       options.insert(OptionMap::value_type(n, Option(n, v, d)));
-}
+       Option opt(f);
+       InputOptions::const_iterator i = pending_options.find(opt.name);
+       if(i!=pending_options.end())
+               opt.value = i->second;
 
-/**
-Gets the given option from the configuration.  If the option doesn't exist,
-an Exception is thrown.
-*/
-const Config::Option &Config::get_option(const string &name) const
-{
-       OptionMap::const_iterator i=options.find(name);
-       if(i==options.end())
-               throw Exception("Tried to access nonexistent option "+name);
-
-       return i->second;
+       return options.insert(OptionMap::value_type(opt.name, opt)).first->second;
 }
 
-/**
-Checks whether an option with the given name exists.
-*/
-bool Config::is_option(const string &name) const
+bool Config::set_option(const string &opt, const string &val)
 {
-       return options.count(name);
-}
+       bool result = false;
 
-/**
-Selects the last profile used.  If the profile cache file is not present, the
-default profile is assumed.
-*/
-void Config::select_last_profile()
-{
-       ifstream in((package.get_source()/".profile.cache").str().c_str());
-       if(in)
+       OptionMap::iterator i = options.find(opt);
+       if(i!=options.end())
        {
-               string profile;
-               getline(in, profile);
-               set_option("profile", profile);
+               if(i->second.value!=val)
+               {
+                       result = true;
+                       changed = true;
+                       mtime = Time::now();
+               }
+               i->second.value = val;
        }
 
-       freeze_mtime=true;
-       package.get_builder().apply_profile_template(*this, get_option("profile").value);
-       freeze_mtime=false;
-
-       load();
+       return result;
 }
 
-/**
-Selects the given profile.  The profile cache file is updated as well, unless
---dry-run was given.
-*/
-void Config::select_profile(const string &profile)
+bool Config::is_option(const string &name) const
 {
-       set_option("profile", profile);
-
-       if(!package.get_builder().get_dry_run())
-       {
-               ofstream out((package.get_source()/".profile.cache").str().c_str());
-               if(out)
-                       out<<profile<<'\n';
-       }
-
-       freeze_mtime=true;
-       package.get_builder().apply_profile_template(*this, profile);
-       freeze_mtime=false;
-
-       load();
+       return options.count(name);
 }
 
-/**
-Processes options from the given raw option map.  Nonexistent options are
-ignored.  If any options were changed, the mtime of the configuration is updated
-to the current time.
-
-@param   opts  A map to process options from
-
-@return  Whether any option values were changed
-*/
-bool Config::update(const StringMap &opts)
+const Config::Option &Config::get_option(const string &name) const
 {
-       bool changed=false;
-       for(StringMap::const_iterator i=opts.begin(); i!=opts.end(); ++i)
-       {
-               if(set_option(i->first, i->second) && i->first!="profile")
-                       changed=true;
-       }
-
-       if(changed && !freeze_mtime)
-               mtime=Time::now();
-
-       return changed;
+       return get_item(options, name);
 }
 
-/**
-Expands any variable references in options.
-*/
-void Config::finish()
+void Config::load()
 {
-       for(unsigned n=0; n<20; ++n)
+       FS::Path fn = package.get_source_directory()/".config";
+       FS::Stat stat = FS::stat(fn);
+       if(stat)
        {
-               bool changed=false;
-               for(OptionMap::iterator i=options.begin(); i!=options.end(); ++i)
-               {
-                       Option &opt=i->second;
-                       unsigned dollar=0;
-                       while((dollar=opt.value.find('$', dollar))!=string::npos)
-                       {
-                               unsigned end;
-                               string var;
-                               if(opt.value[dollar+1]=='{')
-                               {
-                                       end=opt.value.find('}', dollar+2);
-                                       if(end==string::npos)
-                                               throw Exception("Unterminated variable reference");
-                                       var=opt.value.substr(dollar+2, end-dollar-2);
-                                       ++end;
-                               }
-                               else
-                               {
-                                       for(end=dollar+1; (isalnum(opt.value[end]) && opt.value[end]!='_'); ++end);
-                                       var=opt.value.substr(dollar+1, end-dollar-1);
-                               }
-
-                               string value;
-                               if(is_option(var))
-                                       value=get_option(var).value;
-                               else
-                                       value=getenv(var.c_str());
-
-                               opt.value.replace(dollar, end-dollar, value);
-
-                               dollar+=value.size();
-                               changed=true;
-                       }
-               }
+               package.get_builder().get_logger().log("files", format("Reading %s", fn));
+               IO::BufferedFile in(fn.str());
+
+               mtime = stat.get_modify_time();
 
-               if(!changed)
-                       break;
+               DataFile::Parser parser(in, fn.str());
+               Loader loader(*this);
+               loader.load(parser);
        }
 }
 
 void Config::save() const
 {
-       Path::Path fn=package.get_source()/".options.cache";
-
-       OptionMap::const_iterator i=options.find("profile");
-       if(i!=options.end())
-               fn=package.get_source()/(".options."+i->second.value+".cache");
+       if(!changed)
+               return;
 
-       ofstream out(fn.str().c_str());
-       if(!out) return;
+       FS::Path fn = package.get_source_directory()/".config";
 
-       for(i=options.begin(); i!=options.end(); ++i)
-               out<<"option \""<<i->second.name<<"\" \""<<i->second.value<<"\";\n";
-}
+       package.get_builder().get_logger().log("files", format("Writing %s", fn));
+       IO::BufferedFile out(fn.str(), IO::M_WRITE);
 
-bool Config::set_option(const string &opt, const string &val)
-{
-       bool result=false;
+       for(OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
+               IO::print(out, "option \"%s\" \"%s\";\n", i->second.name, i->second.value);
 
-       OptionMap::iterator i=options.find(opt);
-       if(i!=options.end())
-       {
-               if(i->second.value!=val)
-                       result=true;
-               i->second.value=val;
-       }
-
-       return result;
+       changed = false;
 }
 
-void Config::load()
-{
-       Path::Path fn=package.get_source()/".options.cache";
-
-       OptionMap::iterator i=options.find("profile");
-       if(i!=options.end())
-               fn=package.get_source()/(".options."+i->second.value+".cache");
 
-       ifstream in(fn.str().c_str());
-       if(!in) return;
-
-       struct stat st;
-       Path::stat(fn, st);
-       mtime=Time::TimeStamp::from_unixtime(st.st_mtime);
-
-       Parser::Parser parser(in, fn.str());
-       Loader loader(*this);
-       loader.load(parser);
+Config::Option::Option(const Feature &f):
+       Feature(f),
+       value(default_value)
+{
+       name = "with_"+name;
 }
 
 
-Config::Option::Option(const string &n, const string &v, const string &d):
-       name(n),
-       defv(v),
-       descr(d),
-       value(v)
-{ }
-
-
 Config::Loader::Loader(Config &c):
-       conf(c)
+       DataFile::ObjectLoader<Config>(c)
 {
        add("option", &Loader::option);
 }
 
 void Config::Loader::option(const string &n, const string &v)
 {
-       conf.set_option(n, v);
+       if(obj.options.count(n))
+               obj.set_option(n, v);
+       else
+               obj.pending_options[n] = v;
 }