src/unit-manager.c

   1 /*
   2  * Copyright (C) 1987-2008 Sun Microsystems, Inc. All Rights Reserved.
   3  * Copyright (C) 2008-2011 Robert Ancell.
   4  *
   5  * This program is free software: you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License as published by the Free Software
   7  * Foundation, either version 2 of the License, or (at your option) any later
   8  * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
   9  * license.
  10  */
  11
  12 #include <string.h>
  13 #include <glib/gi18n.h> // FIXME: Move out of here
  14
  15 #include "unit-manager.h"
  16 #include "currency-manager.h" // FIXME: Move out of here
  17
  18 struct UnitManagerPrivate
  19 {
  20     GList *categories;
  21 };
  22
  23 G_DEFINE_TYPE (UnitManager, unit_manager, G_TYPE_OBJECT);
  24
  25
  26 static UnitManager *default_unit_manager = NULL;
  27
  28
  29 static gint
  30 compare_currencies(gconstpointer a, gconstpointer b)
  31 {
  32     return strcmp(currency_get_display_name((Currency *)a), currency_get_display_name((Currency *)b));
  33 }
  34
  35
  36 UnitManager *
  37 unit_manager_get_default(void)
  38 {
  39     UnitCategory *category = NULL;
  40     GList *currencies, *iter;
  41     int i;
  42     const struct
  43     {
  44         gchar *category;
  45         gchar *name;
  46         gchar *display_name;
  47         gchar *format;
  48         gchar *from_function;
  49         gchar *to_function;
  50         gchar *symbols;
  51     } units[] =
  52     {
  53         /* FIXME: Approximations of 1/(units in a circle), therefore, 360 deg != 400 grads */
  54         {"angle",    "degree",              N_("Degrees"),           NC_("unit-format", "%s degrees"),  "π*x/180",            "180x/π",         NC_("unit-symbols", "degree,degrees,deg")},
  55         {NULL,       "radian",              N_("Radians"),           NC_("unit-format", "%s radians"),  "x",                  "x",              NC_("unit-symbols", "radian,radians,rad")},
  56         {NULL,       "gradian",             N_("Gradians"),          NC_("unit-format", "%s gradians"), "π*x/200",            "200x/π",         NC_("unit-symbols", "gradian,gradians,grad")},
  57         {"length",   "parsec",              N_("Parsecs"),           NC_("unit-format", "%s pc"),       "30857000000000000x", "x/30857000000000000", NC_("unit-symbols", "parsec,parsecs,pc")},
  58         {NULL,       "lightyear",           N_("Light Years"),       NC_("unit-format", "%s ly"),       "9460730472580800x",  "x/9460730472580800",  NC_("unit-symbols", "lightyear,lightyears,ly")},
  59         {NULL,       "astronomical-unit",   N_("Astronomical Units"), NC_("unit-format", "%s au"),      "149597870691x",      "x/149597870691", NC_("unit-symbols", "au")},
  60         {NULL,       "nautical-mile",       N_("Nautical Miles"),    NC_("unit-format", "%s nm"),       "1852x",              "x/1852",         NC_("unit-symbols", "nm")},
  61         {NULL,       "mile",                N_("Miles"),             NC_("unit-format", "%s mi"),       "1609.344x",          "x/1609.344",     NC_("unit-symbols", "mile,miles,mi")},
  62         {NULL,       "kilometer",           N_("Kilometers"),        NC_("unit-format", "%s km"),       "1000x",              "x/1000",         NC_("unit-symbols", "kilometer,kilometers,km,kms")},
  63         {NULL,       "cable",               N_("Cables"),            NC_("unit-format", "%s cb"),       "219.456x",           "x/219.456",      NC_("unit-symbols", "cable,cables,cb")},
  64         {NULL,       "fathom",              N_("Fathoms"),           NC_("unit-format", "%s ftm"),      "1.8288x",            "x/1.8288",       NC_("unit-symbols", "fathom,fathoms,ftm")},
  65         {NULL,       "meter",               N_("Meters"),            NC_("unit-format", "%s m"),        "x",                  "x",              NC_("unit-symbols", "meter,meters,m")},
  66         {NULL,       "yard",                N_("Yards"),             NC_("unit-format", "%s yd"),       "0.9144x",            "x/0.9144",       NC_("unit-symbols", "yard,yards,yd")},
  67         {NULL,       "foot",                N_("Feet"),              NC_("unit-format", "%s ft"),       "0.3048x",            "x/0.3048",       NC_("unit-symbols", "foot,feet,ft")},
  68         {NULL,       "inch",                N_("Inches"),            NC_("unit-format", "%s in"),       "0.0254x",            "x/0.0254",       NC_("unit-symbols", "inch,inches,in")},
  69         {NULL,       "centimeter",          N_("Centimeters"),       NC_("unit-format", "%s cm"),       "x/100",              "100x",           NC_("unit-symbols", "centimeter,centimeters,cm,cms")},
  70         {NULL,       "millimeter",          N_("Millimeters"),       NC_("unit-format", "%s mm"),       "x/1000",             "1000x",          NC_("unit-symbols", "millimeter,millimeters,mm")},
  71         {NULL,       "micrometer",          N_("Micrometers"),       NC_("unit-format", "%s μm"),       "x/1000000",          "1000000x",       NC_("unit-symbols", "micrometer,micrometers,um")},
  72         {NULL,       "nanometer",           N_("Nanometers"),        NC_("unit-format", "%s nm"),       "x/1000000000",       "1000000000x",    NC_("unit-symbols", "nanometer,nanometers")},
  73         {"area",     "hectare",             N_("Hectares"),          NC_("unit-format", "%s ha"),       "10000x",             "x/10000",        NC_("unit-symbols", "hectare,hectares,ha")},
  74         {NULL,       "acre",                N_("Acres"),             NC_("unit-format", "%s acres"),    "4046.8564224x",      "x/4046.8564224", NC_("unit-symbols", "acre,acres")},
  75         {NULL,       "square-meter",        N_("Square Meter"),      NC_("unit-format", "%s m²"),       "x",                  "x",              NC_("unit-symbols", "m²")},
  76         {NULL,       "square-centimeter",   N_("Square Centimeter"), NC_("unit-format", "%s cm²"),      "0.001x",             "1000x",          NC_("unit-symbols", "cm²")},
  77         {NULL,       "square-millimeter",   N_("Square Millimeter"), NC_("unit-format", "%s mm²"),      "0.000001x",          "1000000x",       NC_("unit-symbols", "mm²")},
  78         {"volume",   "cubic-meter",         N_("Cubic Meters"),      NC_("unit-format", "%s m³"),       "1000x",              "x/1000",         NC_("unit-symbols", "m³")},
  79         {NULL,       "gallon",              N_("Gallons"),           NC_("unit-format", "%s gal"),      "3.785412x",          "x/3.785412",     NC_("unit-symbols", "gallon,gallons,gal")},
  80         {NULL,       "litre",               N_("Litres"),            NC_("unit-format", "%s L"),        "x",                  "x",              NC_("unit-symbols", "litre,litres,liter,liters,L")},
  81         {NULL,       "quart",               N_("Quarts"),            NC_("unit-format", "%s qt"),       "0.9463529x",         "x/0.9463529",    NC_("unit-symbols", "quart,quarts,qt")},
  82         {NULL,       "pint",                N_("Pints"),             NC_("unit-format", "%s pt"),       "0.4731765x",         "x/0.4731765",    NC_("unit-symbols", "pint,pints,pt")},
  83         {NULL,       "millilitre",          N_("Millilitres"),       NC_("unit-format", "%s mL"),       "0.001x",             "1000x",          NC_("unit-symbols", "millilitre,millilitres,milliliter,milliliters,mL,cm³")},
  84         {NULL,       "microlitre",          N_("Microlitre"),        NC_("unit-format", "%s μL"),       "0.000001x",          "1000000x",       NC_("unit-symbols", "mm³,μL,uL")},
  85         {"weight",   "tonne",               N_("Tonnes"),            NC_("unit-format", "%s T"),        "1000x",             "x/1000",          NC_("unit-symbols", "tonne,tonnes")},
  86         {NULL,       "kilograms",           N_("Kilograms"),         NC_("unit-format", "%s kg"),       "x",                  "x",              NC_("unit-symbols", "kilogram,kilograms,kilogramme,kilogrammes,kg,kgs")},
  87         {NULL,       "pound",               N_("Pounds"),            NC_("unit-format", "%s lb"),       "0.45359237x",        "x/0.45359237",   NC_("unit-symbols", "pound,pounds,lb")},
  88         {NULL,       "ounce",               N_("Ounces"),            NC_("unit-format", "%s oz"),       "0.02834952x",        "x/0.02834952",   NC_("unit-symbols", "ounce,ounces,oz")},
  89         {NULL,       "gram",                N_("Grams"),             NC_("unit-format", "%s g"),        "0.001x",             "1000x",          NC_("unit-symbols", "gram,grams,gramme,grammes,g")},
  90         {"duration", "year",                N_("Years"),             NC_("unit-format", "%s years"),    "31557600x",          "x/31557600",     NC_("unit-symbols", "year,years")},
  91         {NULL,       "day",                 N_("Days"),              NC_("unit-format", "%s days"),     "86400x",             "x/86400",        NC_("unit-symbols", "day,days")},
  92         {NULL,       "hour",                N_("Hours"),             NC_("unit-format", "%s hours"),    "3600x",              "x/3600",         NC_("unit-symbols", "hour,hours")},
  93         {NULL,       "minute",              N_("Minutes"),           NC_("unit-format", "%s minutes"),  "60x",                "x/60",           NC_("unit-symbols", "minute,minutes")},
  94         {NULL,       "second",              N_("Seconds"),           NC_("unit-format", "%s s"),        "x",                  "x",              NC_("unit-symbols", "second,seconds,s")},
  95         {NULL,       "millisecond",         N_("Milliseconds"),      NC_("unit-format", "%s ms"),       "0.001x",             "1000x",          NC_("unit-symbols", "millisecond,milliseconds,ms")},
  96         {NULL,       "microsecond",         N_("Microseconds"),      NC_("unit-format", "%s μs"),       "0.000001x",          "1000000x",       NC_("unit-symbols", "microsecond,microseconds,us")},
  97         {"temperature", "degree-celcius",   N_("Celcius"),           NC_("unit-format", "%s˚C"),        "x+273.15",           "x-273.15",       NC_("unit-symbols", "degC,˚C")},
  98         {NULL,          "degree-farenheit", N_("Farenheit"),         NC_("unit-format", "%s˚F"),        "(x+459.67)*5/9",     "x*9/5-459.67",   NC_("unit-symbols", "degF,˚F")},
  99         {NULL,          "degree-kelvin",    N_("Kelvin"),            NC_("unit-format", "%s˚K"),        "x",                  "x",              NC_("unit-symbols", "degK,˚K")},
 100         {NULL,          "degree-rankine",   N_("Rankine"),           NC_("unit-format", "%s˚R"),        "x*5/9",              "x*9/5",          NC_("unit-symbols", "degR,˚R")},
 101         { NULL, NULL, NULL, NULL, NULL, NULL }
 102     };
 103
 104     if (default_unit_manager)
 105         return default_unit_manager;
 106
 107     default_unit_manager = g_object_new(unit_manager_get_type(), NULL);
 108
 109     unit_manager_add_category(default_unit_manager, "angle",    _("Angle"));
 110     unit_manager_add_category(default_unit_manager, "length",   _("Length"));
 111     unit_manager_add_category(default_unit_manager, "area",     _("Area"));
 112     unit_manager_add_category(default_unit_manager, "volume",   _("Volume"));
 113     unit_manager_add_category(default_unit_manager, "weight",   _("Weight"));
 114     unit_manager_add_category(default_unit_manager, "duration", _("Duration"));
 115     unit_manager_add_category(default_unit_manager, "temperature", _("Temperature"));
 116
 117     for (i = 0; units[i].name; i++) {
 118         if (units[i].category)
 119             category = unit_manager_get_category(default_unit_manager, units[i].category);
 120         unit_category_add_unit(category, unit_new(units[i].name,
 121                                                   _(units[i].display_name),
 122                                                   g_dpgettext2(NULL, "unit-format", units[i].format),
 123                                                   units[i].from_function, units[i].to_function,
 124                                                   g_dpgettext2(NULL, "unit-symbols", units[i].symbols)));
 125     }
 126
 127     category = unit_manager_add_category(default_unit_manager, "currency", _("Currency"));
 128     currencies = g_list_copy(currency_manager_get_currencies(currency_manager_get_default()));
 129     currencies = g_list_sort(currencies, compare_currencies);
 130     for (iter = currencies; iter; iter = iter->next)
 131     {
 132         Currency *currency = iter->data;
 133         gchar *format;
 134         Unit *unit;
 135
 136         /* Translators: result of currency conversion, %s is the symbol, %%s is the placeholder for amount, i.e.: USD100 */
 137         format = g_strdup_printf(_("%s%%s"), currency_get_symbol(currency));
 138         unit = unit_new(currency_get_name(currency), currency_get_display_name(currency), format, NULL, NULL, currency_get_name(currency));
 139         g_free(format);
 140
 141         unit_category_add_unit(category, unit);
 142     }
 143     g_list_free(currencies);
 144
 145     return default_unit_manager;
 146 }
 147
 148
 149 UnitCategory *
 150 unit_manager_add_category(UnitManager *manager, const gchar *name, const gchar *display_name)
 151 {
 152     UnitCategory *category;
 153
 154     g_return_val_if_fail(unit_manager_get_category(manager, name) == NULL, NULL);
 155     category = unit_category_new(name, display_name);
 156     manager->priv->categories = g_list_append(manager->priv->categories, category);
 157
 158     return category;
 159 }
 160
 161
 162 const GList *
 163 unit_manager_get_categories(UnitManager *manager)
 164 {
 165     return manager->priv->categories;
 166 }
 167
 168
 169 UnitCategory *
 170 unit_manager_get_category(UnitManager *manager, const gchar *category)
 171 {
 172     GList *iter;
 173
 174     for (iter = manager->priv->categories; iter; iter = iter->next) {
 175         UnitCategory *c = iter->data;
 176         if (strcmp(unit_category_get_name(c), category) == 0)
 177             return c;
 178     }
 179
 180     return NULL;
 181 }
 182
 183
 184 Unit *
 185 unit_manager_get_unit_by_name(UnitManager *manager, const gchar *name)
 186 {
 187     GList *iter;
 188     Unit *u;
 189
 190     for (iter = manager->priv->categories; iter; iter = iter->next) {
 191         UnitCategory *c = iter->data;
 192         u = unit_category_get_unit_by_name(c, name);
 193         if (u)
 194             return u;
 195     }
 196
 197     return NULL;
 198 }
 199
 200
 201 Unit *
 202 unit_manager_get_unit_by_symbol(UnitManager *manager, const gchar *symbol)
 203 {
 204     GList *iter;
 205     Unit *u;
 206
 207     for (iter = manager->priv->categories; iter; iter = iter->next) {
 208         UnitCategory *c = iter->data;
 209         u = unit_category_get_unit_by_symbol(c, symbol);
 210         if (u)
 211             return u;
 212     }
 213
 214     return NULL;
 215 }
 216
 217
 218 gboolean
 219 unit_manager_convert_by_symbol(UnitManager *manager, const MPNumber *x, const char *x_symbol, const char *z_symbol, MPNumber *z)
 220 {
 221     GList *iter;
 222
 223     for (iter = manager->priv->categories; iter; iter = iter->next) {
 224         UnitCategory *c = iter->data;
 225         Unit *x_units, *z_units;
 226
 227         x_units = unit_category_get_unit_by_symbol(c, x_symbol);
 228         z_units = unit_category_get_unit_by_symbol(c, z_symbol);
 229         if (x_units && z_units && unit_category_convert(c, x, x_units, z_units, z))
 230             return TRUE;
 231     }
 232
 233     return FALSE;
 234 }
 235
 236
 237 static void
 238 unit_manager_class_init(UnitManagerClass *klass)
 239 {
 240     g_type_class_add_private(klass, sizeof(UnitManagerPrivate));
 241 }
 242
 243
 244 static void
 245 unit_manager_init(UnitManager *manager)
 246 {
 247     manager->priv = G_TYPE_INSTANCE_GET_PRIVATE(manager, unit_manager_get_type(), UnitManagerPrivate);
 248 }