Add profile templates

[builder.git] / source / config.cpp

diff --git a/source/config.cpp b/source/config.cpp
index 36a59638f104506a9bf6adaca70ab0d8b2ddd57f..afa60e87e45f10fe3a0e0c9780e2c52c9a607741 100644 (file)
--- a/source/config.cpp
+++ b/source/config.cpp
@@ -2,11 +2,18 @@
 #include <msp/error.h>
 #include <msp/path/utils.h>
 #include <msp/time/utils.h>
+#include "builder.h"
 #include "config.h"
+#include "package.h"
 
 using namespace std;
 using namespace Msp;
 
+Config::Config(Package &p):
+       package(p),
+       freeze_mtime(false)
+{ }
+
 /**
 Adds a configuration option.
 
@@ -46,29 +53,39 @@ default profile is assumed.
 */
 void Config::select_last_profile()
 {
-       ifstream in((source/".profile.cache").str().c_str());
+       ifstream in((package.get_source()/".profile.cache").str().c_str());
        if(in)
        {
                string profile;
-               in>>profile;
+               getline(in, profile);
                set_option("profile", profile);
        }
-       else
-               set_option("profile", "default");
+
+       freeze_mtime=true;
+       package.get_builder().apply_profile_template(*this, get_option("profile").value);
+       freeze_mtime=false;
 
        load();
 }
 
 /**
-Selects the given profile.  The profile cache file is updated as well.
+Selects the given profile.  The profile cache file is updated as well, unless
+--dry-run was given.
 */
 void Config::select_profile(const string &profile)
 {
        set_option("profile", profile);
 
-       ofstream out((source/".profile.cache").str().c_str());
-       if(out)
-               out<<profile<<'\n';
+       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();
 }
@@ -82,28 +99,76 @@ to the current time.
 
 @return  Whether any option values were changed
 */
-bool Config::update(const RawOptionMap &opts)
+bool Config::update(const StringMap &opts)
 {
        bool changed=false;
-       for(RawOptionMap::const_iterator i=opts.begin(); i!=opts.end(); ++i)
+       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)
+       if(changed && !freeze_mtime)
                mtime=Time::now();
 
        return changed;
 }
 
+/**
+Expands any variable references in options.
+*/
+void Config::finish()
+{
+       for(unsigned n=0; n<20; ++n)
+       {
+               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;
+                       }
+               }
+
+               if(!changed)
+                       break;
+       }
+}
+
 void Config::save() const
 {
-       Path::Path fn=source/".options.cache";
+       Path::Path fn=package.get_source()/".options.cache";
 
        OptionMap::const_iterator i=options.find("profile");
        if(i!=options.end())
-               fn=source/(".options."+i->second.value+".cache");
+               fn=package.get_source()/(".options."+i->second.value+".cache");
 
        ofstream out(fn.str().c_str());
        if(!out) return;
@@ -129,11 +194,11 @@ bool Config::set_option(const string &opt, const string &val)
 
 void Config::load()
 {
-       Path::Path fn=source/".options.cache";
+       Path::Path fn=package.get_source()/".options.cache";
 
        OptionMap::iterator i=options.find("profile");
        if(i!=options.end())
-               fn=source/(".options."+i->second.value+".cache");
+               fn=package.get_source()/(".options."+i->second.value+".cache");
 
        ifstream in(fn.str().c_str());
        if(!in) return;
@@ -147,6 +212,7 @@ void Config::load()
        loader.load(parser);
 }
 
+
 Config::Option::Option(const string &n, const string &v, const string &d):
        name(n),
        defv(v),
@@ -154,6 +220,7 @@ Config::Option::Option(const string &n, const string &v, const string &d):
        value(v)
 { }
 
+
 Config::Loader::Loader(Config &c):
        conf(c)
 {