1 files changed, 156 insertions, 0 deletions

diff --git a/src/lang/env.h b/src/lang/env.h
new file mode 100644
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--- /dev/null
+++ b/src/lang/env.h
@@ -0,0 +1,156 @@
+/*************************************************************************
+ *
+ * HTCd - Copyright (C) 1998-2006 Henrik Rydberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ENVH
+#define ENVH
+
+#include <lang/token.h>
+
+mstring Random(int n);
+
+const int OP_PARSE=8;
+const mstring para_def="\n";
+
+////////////////////////////////////////////////////////////////////
+
+struct Lang {
+  volatile int running;
+  opmap ops;
+  tokmap toks;
+  Lang();
+  virtual ~Lang() {}
+};
+
+struct req_env {
+  Lang* glob;
+  tokmap toks;
+  mstring uri;
+  int lang;
+  volatile int* running;
+
+  int is_running() const { return glob->running&&(!running||*running); }
+
+  req_env(Lang& g,tokmap& p) : glob(&g),toks(p),uri(),lang(0),running(0) {}
+  virtual ~req_env() {}
+};
+
+////////////////////////////////////////////////////////////////////
+
+struct Env : public op_env {
+  typedef mrvec<expr_t*> xpile;
+  typedef tokmap::iterator iterator;
+  typedef tokmap::const_iterator const_iterator;
+  
+  Env(opmap& op,req_env& r,unsigned m):
+    op_env(op),req(&r),toks(&r.toks),up(0),mod(m),
+    loc(),db(0),dbat(0),pwd(r.uri),para(para_def),args(0) {}
+
+  Env(Env& p,tokmap& tok,const sref& cwd):
+    op_env(p),req(p.req),toks(&tok),up(p.up),mod(p.mod),
+    loc(p.loc),db(0),dbat(0),pwd(cwd),para(p.para),args(0) {}
+  Env(Env& p,unsigned m,const sref& cwd):
+    op_env(p),req(p.req),toks(p.toks),up(p.up),mod(m),
+    loc(p.loc),db(0),dbat(0),pwd(cwd),para(p.para),args(0) {}
+
+  Env(Env& p):
+    op_env(p),req(p.req),toks(p.toks),up(p.up),mod(p.mod),
+    loc(p.loc),db(p.db),dbat(p.dbat),pwd(p.pwd),para(p.para),args(0) {}
+  Env(Env& p,dbmap& dbm):
+    op_env(p),req(p.req),toks(p.toks),up(p.up),mod(p.mod),
+    loc(p.loc),db(&dbm),dbat(0),pwd(p.pwd),para(p.para),args(0) {}
+  Env(Env& p,opmap& op):
+    op_env(op),req(p.req),toks(p.toks),up(p.up),mod(p.mod),
+    loc(p.loc),db(p.db),dbat(p.dbat),pwd(p.pwd),para(p.para),args(0) {}
+
+  ~Env() { clear_args(); }
+
+  int is_clear(const tok_t* tok) const { return tok&&tok->is_clear(mod); }
+  unsigned tight() const { return tok_t::tight(mod); }
+
+  int check_arg(const runnable_t& ftok) const;
+  int is_arg(const sref& t) const { return cset_digit.test(t.front()); }
+  
+  int xsize() const { return xarg.size(); }
+  int rsize() const { return rarg.size(); }
+  
+  void xpush(const sref& in) throw(merror_t);
+  void rpush(const sref& in) throw(merror_t);
+  void clear_args();  
+  
+  void parg(mstream& out,int n) throw(merror_t);
+  void parg(mstring& buf,int n) throw(merror_t);
+  mstring parg(int n) throw(merror_t);
+  
+  const sref& operator[](int m) const throw(merror_t);
+  expr_t* arg(int m) throw(merror_t);
+  
+  const sref glob(const sref& t) const throw(merror_t);
+  
+  int glob_find(const sref& t) const;
+  void glob_list(rpile& list,const sref& t) const;
+  void glob_adb(const sref& fx,const sref& t) throw(merror_t);  
+  
+  const sref aloc(const sref& t,const sref& v) throw(merror_t);
+  const sref sloc(const sref& t,const sref& v) throw(merror_t);
+  const sref gloc(const sref& t) const throw(merror_t);
+
+  int gloc_find(const sref& t) const;
+  void gloc_list(rpile& list,const sref& t) const;
+  void gloc_adb(const sref& fx,const sref& t) throw(merror_t);  
+
+  int onarg(int m) const;
+  int onglob(const sref& s) const;
+  int onloc(const sref& s) const;
+
+  void parse(mstream& out,const sref& in) throw(merror_t);
+  void expr(mstream& out,const sref& in) throw(merror_t);
+  void parse(mstream& out,expr_t* x) throw(merror_t);
+
+  void eval(mstream& out,const sref& in,int child) throw(merror_t);
+  void eval(mstream& out,expr_t* x,int child) throw(merror_t);
+  void eval(mstream& out,runnable_t* ftok,int child) throw(merror_t);
+  
+  int split(sref& first,sref& rest) throw(merror_t);
+  void term(mstream& out,expr_t* x) throw(merror_t);
+
+  mstring URI(const sref& raw);
+
+  Env *up;
+  req_env* req;
+  tokmap* toks;
+  int mod,dbat;
+  tokmap loc;
+  dbmap* db;
+  mstring pwd,para,epilog;
+  int args;
+  xpile xarg,rarg;
+};
+
+/////////////////////////////////////////////////////////////////////
+
+struct latex_env : public Env {
+  latex_env(Env& p);
+
+  int split(sref& first,sref& rest) throw(merror_t);
+  void term(mstream& out,expr_t* x) throw(merror_t);
+};
+
+/////////////////////////////////////////////////////////////////////
+
+#endif