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--2009  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 bool relative_includes;
  27
  28 /*
  29   Backwards compatibility.
  30 */
  31 bool lily_1_8_relative = false;
  32 bool lily_1_8_compatibility_used = false;
  33 bool profile_property_accesses = false;
  34 /*
  35   crash if internally the wrong type is used for a grob property.
  36 */
  37 bool do_internal_type_checking_global;
  38 bool strict_infinity_checking = false;
  39
  40 static SCM option_hash;
  41
  42
  43 void
  44 internal_set_option (SCM var,
  45                      SCM val)
  46 {
  47   if (0)
  48     ;
  49   else if (var == ly_symbol2scm ("profile-property-accesses"))
  50     {
  51       profile_property_accesses = to_boolean (val);
  52       val = scm_from_bool (to_boolean (val));
  53     }
  54   else if (var == ly_symbol2scm ("point-and-click"))
  55     {
  56       point_and_click_global = to_boolean (val);
  57       val = scm_from_bool (to_boolean (val));
  58     }
  59   else if (var == ly_symbol2scm ("protected-scheme-parsing"))
  60     {
  61       parse_protect_global = to_boolean (val);
  62       val = scm_from_bool (to_boolean (val));
  63     }
  64   else if (var == ly_symbol2scm ("check-internal-types"))
  65     {
  66       do_internal_type_checking_global = to_boolean (val);
  67       val = scm_from_bool (to_boolean (val));
  68     }
  69   else if (var == ly_symbol2scm ("debug-gc-assert-parsed-dead"))
  70     {
  71       parsed_objects_should_be_dead = to_boolean (val);
  72       val = scm_from_bool (parsed_objects_should_be_dead);
  73     }
  74   else if (var == ly_symbol2scm ("safe"))
  75     {
  76       be_safe_global = to_boolean (val);
  77       val = scm_from_bool (be_safe_global);
  78     }
  79   else if (var == ly_symbol2scm ("old-relative"))
  80     {
  81       lily_1_8_relative = to_boolean (val);
  82       /* Needs to be reset for each file that uses this option. */
  83       lily_1_8_compatibility_used = to_boolean (val);
  84       val = scm_from_bool (to_boolean (val));
  85     }
  86   else if (var == ly_symbol2scm ("strict-infinity-checking"))
  87     {
  88       strict_infinity_checking = to_boolean (val);
  89       val = scm_from_bool (to_boolean (val));
  90     }
  91   else if (var == ly_symbol2scm ("debug-skylines"))
  92     {
  93       debug_skylines = to_boolean (val);
  94       val = scm_from_bool (to_boolean (val));
  95     }
  96   else if (var == ly_symbol2scm ("debug-property-callbacks"))
  97     {
  98       debug_property_callbacks = to_boolean (val);
  99       val = scm_from_bool (to_boolean (val));
 100     }
 101   else if (var == ly_symbol2scm ("debug-page-breaking-scoring"))
 102     {
 103       debug_page_breaking_scoring = to_boolean (val);
 104       val = scm_from_bool (to_boolean (val));
 105     }
 106   else if (var == ly_symbol2scm ("datadir"))
 107     {
 108       /* ignore input value. */
 109       val = ly_string2scm (lilypond_datadir);
 110     }
 111   else if (var == ly_symbol2scm ("relative-includes"))
 112     {
 113       relative_includes = to_boolean (val);
 114       val = scm_from_bool (to_boolean (val));
 115     }
 116
 117   scm_hashq_set_x (option_hash, var, val);
 118 }
 119
 120
 121 ssize const HELP_INDENT = 30;
 122 ssize const INDENT = 2;
 123 ssize const SEPARATION = 5;
 124
 125 /*
 126   Hmmm. should do in SCM / C++  ?
 127 */
 128 static string
 129 get_help_string ()
 130 {
 131   SCM alist = ly_hash2alist (option_hash);
 132   SCM converter = ly_lily_module_constant ("scm->string");
 133
 134   vector<string> opts;
 135
 136   for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
 137     {
 138       SCM sym = scm_caar (s);
 139       SCM val = scm_cdar (s);
 140       string opt_spec = String_convert::char_string (' ', INDENT)
 141                         + ly_symbol2string (sym)
 142                         + " ("
 143                         + ly_scm2string (scm_call_1 (converter, val))
 144                         + ")";
 145
 146       if (opt_spec.length () + SEPARATION > HELP_INDENT)
 147         opt_spec += "\n" + String_convert::char_string (' ', HELP_INDENT);
 148       else
 149         opt_spec += String_convert::char_string (' ', HELP_INDENT
 150                                                       - opt_spec.length ());
 151
 152       SCM opt_help_scm
 153         = scm_object_property (sym,
 154                                ly_symbol2scm ("program-option-documentation"));
 155       string opt_help = ly_scm2string (opt_help_scm);
 156       replace_all (&opt_help,
 157                    string ("\n"),
 158                    string ("\n")
 159                    + String_convert::char_string (' ', HELP_INDENT));
 160
 161       opts.push_back (opt_spec + opt_help + "\n");
 162     }
 163
 164   string help ("Options supported by `ly:set-option':\n\n");
 165   vector_sort (opts, less<string> ());
 166   for (vsize i = 0; i < opts.size (); i++)
 167     help += opts[i];
 168   return help;
 169 }
 170
 171
 172 LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
 173            "Print @code{ly:set-option} usage.")
 174 {
 175   string help = get_help_string ();
 176   puts (help.c_str());
 177
 178   return SCM_UNSPECIFIED;
 179 }
 180
 181
 182 LY_DEFINE (ly_add_option, "ly:add-option", 3, 0, 0,
 183            (SCM sym, SCM val, SCM description),
 184            "Add a program option @var{sym} with default @var{val}.")
 185 {
 186   if (!option_hash)
 187     option_hash = scm_permanent_object (scm_c_make_hash_table (11));
 188   LY_ASSERT_TYPE (ly_is_symbol, sym, 1);
 189   LY_ASSERT_TYPE (scm_is_string, description, 3);
 190
 191   internal_set_option (sym, val);
 192
 193   scm_set_object_property_x (sym, ly_symbol2scm ("program-option-documentation"),
 194                              description);
 195
 196   return SCM_UNSPECIFIED;
 197 }
 198
 199
 200 LY_DEFINE (ly_set_option, "ly:set-option", 1, 1, 0, (SCM var, SCM val),
 201            "Set a program option.")
 202 {
 203   LY_ASSERT_TYPE (ly_is_symbol, var, 1);
 204
 205   if (val == SCM_UNDEFINED)
 206     val = SCM_BOOL_T;
 207
 208   string varstr = ly_scm2string (scm_symbol_to_string (var));
 209   if (varstr.substr (0, 3) == string ("no-"))
 210     {
 211       var = ly_symbol2scm (varstr.substr (3, varstr.length () - 3).c_str ());
 212       val = scm_from_bool (!to_boolean (val));
 213     }
 214
 215   SCM handle = scm_hashq_get_handle (option_hash, var);
 216   if (handle == SCM_BOOL_F)
 217     warning (_f ("no such internal option: %s", varstr.c_str ()));
 218
 219   internal_set_option (var, val);
 220   return SCM_UNSPECIFIED;
 221 }
 222
 223
 224 LY_DEFINE (ly_command_line_options, "ly:command-line-options", 0, 0, 0, (),
 225            "The Scheme options specified on command-line with @option{-d}.")
 226 {
 227   return ly_string2scm (init_scheme_variables_global);
 228 }
 229
 230
 231 LY_DEFINE (ly_command_line_code, "ly:command-line-code", 0, 0, 0, (),
 232            "The Scheme code specified on command-line with @option{-e}.")
 233 {
 234   return ly_string2scm (init_scheme_code_global);
 235 }
 236
 237
 238 LY_DEFINE (ly_command_line_verbose_p, "ly:command-line-verbose?", 0, 0, 0, (),
 239            "Was @code{be_verbose_global} set?")
 240 {
 241   return scm_from_bool (be_verbose_global);
 242 }
 243
 244
 245 LY_DEFINE (ly_all_options, "ly:all-options",
 246            0, 0, 0, (),
 247            "Get all option settings in an alist.")
 248 {
 249   return ly_hash2alist (option_hash);
 250 }
 251
 252
 253 LY_DEFINE (ly_get_option, "ly:get-option", 1, 0, 0, (SCM var),
 254            "Get a global option setting.")
 255 {
 256   LY_ASSERT_TYPE (ly_is_symbol, var, 1);
 257   return scm_hashq_ref (option_hash, var, SCM_BOOL_F);
 258 }