lily/program-option-scheme.cc

   1 /*
   2   program-option-scheme.cc -- implement option setting from Scheme
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2001--2007  Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "program-option.hh"
  10
  11 #include <cstdio>
  12 #include <cstring>
  13 using namespace std;
  14
  15 #include "profile.hh"
  16 #include "international.hh"
  17 #include "main.hh"
  18 #include "parse-scm.hh"
  19 #include "string-convert.hh"
  20 #include "warn.hh"
  21
  22 bool debug_skylines;
  23 bool debug_property_callbacks;
  24 bool debug_page_breaking_scoring;
  25
  26 /*
  27   Backwards compatibility.
  28 */
  29 bool lily_1_8_relative = false;
  30 bool lily_1_8_compatibility_used = false;
  31 bool profile_property_accesses = false;
  32 /*
  33   crash if internally the wrong type is used for a grob property.
  34 */
  35 bool do_internal_type_checking_global;
  36 bool strict_infinity_checking = false;
  37
  38 static SCM option_hash;
  39
  40 void internal_set_option (SCM var, SCM val)
  41 {
  42   if (0)
  43     ;
  44   else if (var == ly_symbol2scm ("profile-property-accesses"))
  45     {
  46       profile_property_accesses = to_boolean (val);
  47       val = scm_from_bool (to_boolean (val));
  48     }
  49   else if (var == ly_symbol2scm ("point-and-click"))
  50     {
  51       point_and_click_global = to_boolean (val);
  52       val = scm_from_bool (to_boolean (val));
  53     }
  54   else if (var == ly_symbol2scm ("protected-scheme-parsing"))
  55     {
  56       parse_protect_global = to_boolean (val);
  57       val = scm_from_bool (to_boolean (val));
  58     }
  59   else if (var == ly_symbol2scm ("check-internal-types"))
  60     {
  61       do_internal_type_checking_global = to_boolean (val);
  62       val = scm_from_bool (to_boolean (val));
  63     }
  64   else if (var == ly_symbol2scm ("debug-gc-assert-parsed-dead"))
  65     {
  66       parsed_objects_should_be_dead = to_boolean (val);
  67       val = scm_from_bool (parsed_objects_should_be_dead);
  68     }
  69   else if (var == ly_symbol2scm ("safe"))
  70     {
  71       be_safe_global = to_boolean (val);
  72       val = scm_from_bool (be_safe_global);
  73     }
  74   else if (var == ly_symbol2scm ("old-relative"))
  75     {
  76       lily_1_8_relative = to_boolean (val);
  77       /*  Needs to be reset for each file that uses this option.  */
  78       lily_1_8_compatibility_used = to_boolean (val);
  79       val = scm_from_bool (to_boolean (val));
  80     }
  81   else if (var == ly_symbol2scm ("strict-infinity-checking"))
  82     {
  83       strict_infinity_checking = to_boolean (val);
  84       val = scm_from_bool (to_boolean (val));
  85     }
  86   else if (var == ly_symbol2scm ("debug-skylines"))
  87     {
  88       debug_skylines = to_boolean (val);
  89       val = scm_from_bool (to_boolean (val));
  90     }
  91   else if (var == ly_symbol2scm ("debug-property-callbacks"))
  92     {
  93       debug_property_callbacks = to_boolean (val);
  94       val = scm_from_bool (to_boolean (val));
  95     }
  96   else if (var == ly_symbol2scm ("debug-page-breaking-scoring"))
  97     {
  98       debug_page_breaking_scoring = to_boolean (val);
  99       val = scm_from_bool (to_boolean (val));
 100     }
 101   else if (var == ly_symbol2scm ("datadir"))
 102     {
 103       /* ignore input value. */
 104       val = ly_string2scm (lilypond_datadir);
 105     }
 106
 107
 108   scm_hashq_set_x (option_hash, var, val);
 109
 110
 111 }
 112
 113
 114
 115 ssize const HELP_INDENT = 30;
 116 ssize const INDENT = 2;
 117 ssize const SEPARATION = 5;
 118
 119 /*
 120   Hmmm. should do in SCM / C++  ?
 121 */
 122 static string
 123 get_help_string ()
 124 {
 125   SCM alist = ly_hash2alist (option_hash);
 126   SCM convertor = ly_lily_module_constant ("scm->string");
 127
 128   vector<string> opts;
 129
 130   for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
 131     {
 132       SCM sym = scm_caar (s);
 133       SCM val = scm_cdar (s);
 134       string opt_spec
 135         = String_convert::char_string (' ', INDENT)
 136         + ly_symbol2string (sym)
 137         + " ("
 138         + ly_scm2string (scm_call_1 (convertor, val))
 139         + ")";
 140
 141       if (opt_spec.length () + SEPARATION > HELP_INDENT)
 142         {
 143           opt_spec += "\n"
 144             + String_convert::char_string (' ', HELP_INDENT);
 145         }
 146       else
 147         opt_spec += String_convert::char_string (' ', HELP_INDENT - opt_spec.length ());
 148
 149       SCM opt_help_scm
 150         = scm_object_property (sym, ly_symbol2scm ("program-option-documentation"));
 151       string opt_help = ly_scm2string (opt_help_scm);
 152       replace_all (&opt_help,
 153                    string ("\n"),
 154                    string ("\n")
 155                    + String_convert::char_string (' ', HELP_INDENT));
 156
 157       opts.push_back (opt_spec + opt_help + "\n");
 158     }
 159
 160   string help ("Options supported by ly:set-option\n\n");
 161   vector_sort (opts, less<string> ());
 162   for (vsize i = 0; i < opts.size (); i++)
 163     help += opts[i];
 164
 165   help += string ("\n");
 166   return help;
 167 }
 168
 169
 170 LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
 171            "Print @code{ly:set-option} usage.")
 172 {
 173   string help = get_help_string ();
 174   progress_indication (help);
 175
 176   return SCM_UNSPECIFIED;
 177 }
 178
 179 LY_DEFINE (ly_add_option, "ly:add-option", 3, 0, 0,
 180            (SCM sym, SCM val, SCM description),
 181            "Add a program option @var{sym} with default @var{val}.")
 182 {
 183   if (!option_hash)
 184     {
 185       option_hash = scm_permanent_object (scm_c_make_hash_table (11));
 186     }
 187   LY_ASSERT_TYPE (ly_is_symbol, sym, 1);
 188   LY_ASSERT_TYPE (scm_is_string, description, 3);
 189
 190   internal_set_option (sym, val);
 191
 192   scm_set_object_property_x (sym, ly_symbol2scm ("program-option-documentation"),
 193                              description);
 194
 195   return SCM_UNSPECIFIED;
 196 }
 197
 198 LY_DEFINE (ly_set_option, "ly:set-option", 1, 1, 0, (SCM var, SCM val),
 199            "Set a program option.")
 200 {
 201   LY_ASSERT_TYPE (ly_is_symbol, var, 1);
 202
 203   if (val == SCM_UNDEFINED)
 204     val = SCM_BOOL_T;
 205
 206   string varstr = ly_scm2string (scm_symbol_to_string (var));
 207   if (varstr.substr (0, 3) == string ("no-"))
 208     {
 209       var = ly_symbol2scm (varstr.substr (3, varstr.length () -3).c_str ());
 210       val = scm_from_bool (!to_boolean (val));
 211     }
 212
 213   SCM handle = scm_hashq_get_handle (option_hash, var);
 214   if (handle == SCM_BOOL_F)
 215     warning (_f ("no such internal option: %s", varstr.c_str ()));
 216
 217   internal_set_option (var, val);
 218   return SCM_UNSPECIFIED;
 219 }
 220
 221 LY_DEFINE (ly_command_line_options, "ly:command-line-options", 0, 0, 0, (),
 222            "The Scheme options specified on command-line with @option{-d}.")
 223 {
 224   return ly_string2scm (init_scheme_variables_global);
 225 }
 226
 227 LY_DEFINE (ly_command_line_code, "ly:command-line-code", 0, 0, 0, (),
 228            "The Scheme code specified on command-line with @option{-e}.")
 229 {
 230   return ly_string2scm (init_scheme_code_global);
 231 }
 232
 233 LY_DEFINE (ly_command_line_verbose_p, "ly:command-line-verbose?", 0, 0, 0, (),
 234            "Was @code{be_verbose_global} set?")
 235 {
 236   return scm_from_bool (be_verbose_global);
 237 }
 238
 239
 240
 241 LY_DEFINE (ly_all_options, "ly:all-options",
 242            0, 0, 0, (),
 243            "Get all option settings in an alist.")
 244 {
 245   return ly_hash2alist (option_hash);
 246 }
 247
 248
 249 LY_DEFINE (ly_get_option, "ly:get-option", 1, 0, 0, (SCM var),
 250            "Get a global option setting.")
 251 {
 252   LY_ASSERT_TYPE (ly_is_symbol, var, 1);
 253   return scm_hashq_ref (option_hash, var, SCM_BOOL_F);
 254 }
 255
 256