summaryrefslogtreecommitdiff
path: root/src/unit-manager.c
blob: 9943a31efd9ddccd028305c7910cb60fcb3cfcd2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
/*
 * Copyright (C) 1987-2008 Sun Microsystems, Inc. All Rights Reserved.
 * Copyright (C) 2008-2011 Robert Ancell.
 * 
 * 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. See http://www.gnu.org/copyleft/gpl.html the full text of the
 * license.
 */

#include <string.h>
#include <glib/gi18n.h> // FIXME: Move out of here

#include "unit-manager.h"
#include "currency-manager.h" // FIXME: Move out of here

struct UnitManagerPrivate
{
    GList *categories;
};

G_DEFINE_TYPE (UnitManager, unit_manager, G_TYPE_OBJECT);


static UnitManager *default_unit_manager = NULL;


static gint
compare_currencies(gconstpointer a, gconstpointer b)
{
    return strcmp(currency_get_display_name((Currency *)a), currency_get_display_name((Currency *)b));
}


UnitManager *
unit_manager_get_default(void)
{
    UnitCategory *category = NULL;
    GList *currencies, *iter;
    int i;
    const struct
    {
        gchar *category;
        gchar *name;
        gchar *display_name;
        gchar *format;
        gchar *from_function;
        gchar *to_function;
        gchar *symbols;
    } units[] =
    {
        /* FIXME: Approximations of 1/(units in a circle), therefore, 360 deg != 400 grads */
        {"angle",    "degree",              N_("Degrees"),           NC_("unit-format", "%s degrees"),  "π*x/180",            "180x/π",         NC_("unit-symbols", "degree,degrees,deg")},
        {NULL,       "radian",              N_("Radians"),           NC_("unit-format", "%s radians"),  "x",                  "x",              NC_("unit-symbols", "radian,radians,rad")},
        {NULL,       "gradian",             N_("Gradians"),          NC_("unit-format", "%s gradians"), "π*x/200",            "200x/π",         NC_("unit-symbols", "gradian,gradians,grad")},
        {"length",   "parsec",              N_("Parsecs"),           NC_("unit-format", "%s pc"),       "30857000000000000x", "x/30857000000000000", NC_("unit-symbols", "parsec,parsecs,pc")},
        {NULL,       "lightyear",           N_("Light Years"),       NC_("unit-format", "%s ly"),       "9460730472580800x",  "x/9460730472580800",  NC_("unit-symbols", "lightyear,lightyears,ly")},
        {NULL,       "astronomical-unit",   N_("Astronomical Units"), NC_("unit-format", "%s au"),      "149597870691x",      "x/149597870691", NC_("unit-symbols", "au")},
        {NULL,       "nautical-mile",       N_("Nautical Miles"),    NC_("unit-format", "%s nmi"),      "1852x",              "x/1852",         NC_("unit-symbols", "nmi")},
        {NULL,       "mile",                N_("Miles"),             NC_("unit-format", "%s mi"),       "1609.344x",          "x/1609.344",     NC_("unit-symbols", "mile,miles,mi")},
        {NULL,       "kilometer",           N_("Kilometers"),        NC_("unit-format", "%s km"),       "1000x",              "x/1000",         NC_("unit-symbols", "kilometer,kilometers,km,kms")},
        {NULL,       "cable",               N_("Cables"),            NC_("unit-format", "%s cb"),       "219.456x",           "x/219.456",      NC_("unit-symbols", "cable,cables,cb")},
        {NULL,       "fathom",              N_("Fathoms"),           NC_("unit-format", "%s ftm"),      "1.8288x",            "x/1.8288",       NC_("unit-symbols", "fathom,fathoms,ftm")},
        {NULL,       "meter",               N_("Meters"),            NC_("unit-format", "%s m"),        "x",                  "x",              NC_("unit-symbols", "meter,meters,m")},
        {NULL,       "yard",                N_("Yards"),             NC_("unit-format", "%s yd"),       "0.9144x",            "x/0.9144",       NC_("unit-symbols", "yard,yards,yd")},
        {NULL,       "foot",                N_("Feet"),              NC_("unit-format", "%s ft"),       "0.3048x",            "x/0.3048",       NC_("unit-symbols", "foot,feet,ft")},
        {NULL,       "inch",                N_("Inches"),            NC_("unit-format", "%s in"),       "0.0254x",            "x/0.0254",       NC_("unit-symbols", "inch,inches,in")},
        {NULL,       "centimeter",          N_("Centimeters"),       NC_("unit-format", "%s cm"),       "x/100",              "100x",           NC_("unit-symbols", "centimeter,centimeters,cm,cms")},
        {NULL,       "millimeter",          N_("Millimeters"),       NC_("unit-format", "%s mm"),       "x/1000",             "1000x",          NC_("unit-symbols", "millimeter,millimeters,mm")},
        {NULL,       "micrometer",          N_("Micrometers"),       NC_("unit-format", "%s μm"),       "x/1000000",          "1000000x",       NC_("unit-symbols", "micrometer,micrometers,um")},
        {NULL,       "nanometer",           N_("Nanometers"),        NC_("unit-format", "%s nm"),       "x/1000000000",       "1000000000x",    NC_("unit-symbols", "nanometer,nanometers,nm")},
        {"area",     "hectare",             N_("Hectares"),          NC_("unit-format", "%s ha"),       "10000x",             "x/10000",        NC_("unit-symbols", "hectare,hectares,ha")},
        {NULL,       "acre",                N_("Acres"),             NC_("unit-format", "%s acres"),    "4046.8564224x",      "x/4046.8564224", NC_("unit-symbols", "acre,acres")},
        {NULL,       "square-meter",        N_("Square Meters"),      NC_("unit-format", "%s m²"),       "x",                  "x",              NC_("unit-symbols", "m²")},
        {NULL,       "square-centimeter",   N_("Square Centimeters"), NC_("unit-format", "%s cm²"),      "0.0001x",            "10000x",         NC_("unit-symbols", "cm²")},
        {NULL,       "square-millimeter",   N_("Square Millimeters"), NC_("unit-format", "%s mm²"),      "0.000001x",          "1000000x",       NC_("unit-symbols", "mm²")},
        {"volume",   "cubic-meter",         N_("Cubic Meters"),      NC_("unit-format", "%s m³"),       "1000x",              "x/1000",         NC_("unit-symbols", "m³")},
        {NULL,       "gallon",              N_("Gallons"),           NC_("unit-format", "%s gal"),      "3.785412x",          "x/3.785412",     NC_("unit-symbols", "gallon,gallons,gal")},
        {NULL,       "litre",               N_("Litres"),            NC_("unit-format", "%s L"),        "x",                  "x",              NC_("unit-symbols", "litre,litres,liter,liters,L")},
        {NULL,       "quart",               N_("Quarts"),            NC_("unit-format", "%s qt"),       "0.9463529x",         "x/0.9463529",    NC_("unit-symbols", "quart,quarts,qt")},
        {NULL,       "pint",                N_("Pints"),             NC_("unit-format", "%s pt"),       "0.4731765x",         "x/0.4731765",    NC_("unit-symbols", "pint,pints,pt")},
        {NULL,       "millilitre",          N_("Millilitres"),       NC_("unit-format", "%s mL"),       "0.001x",             "1000x",          NC_("unit-symbols", "millilitre,millilitres,milliliter,milliliters,mL,cm³")},
        {NULL,       "microlitre",          N_("Microlitres"),       NC_("unit-format", "%s μL"),       "0.000001x",          "1000000x",       NC_("unit-symbols", "mm³,μL,uL")},
        {"weight",   "tonne",               N_("Tonnes"),            NC_("unit-format", "%s T"),        "1000x",             "x/1000",          NC_("unit-symbols", "tonne,tonnes")},
        {NULL,       "kilograms",           N_("Kilograms"),         NC_("unit-format", "%s kg"),       "x",                  "x",              NC_("unit-symbols", "kilogram,kilograms,kilogramme,kilogrammes,kg,kgs")},
        {NULL,       "pound",               N_("Pounds"),            NC_("unit-format", "%s lb"),       "0.45359237x",        "x/0.45359237",   NC_("unit-symbols", "pound,pounds,lb")},
        {NULL,       "ounce",               N_("Ounces"),            NC_("unit-format", "%s oz"),       "0.02834952x",        "x/0.02834952",   NC_("unit-symbols", "ounce,ounces,oz")},
        {NULL,       "gram",                N_("Grams"),             NC_("unit-format", "%s g"),        "0.001x",             "1000x",          NC_("unit-symbols", "gram,grams,gramme,grammes,g")},
        {"duration", "year",                N_("Years"),             NC_("unit-format", "%s years"),    "31557600x",          "x/31557600",     NC_("unit-symbols", "year,years")},
        {NULL,       "day",                 N_("Days"),              NC_("unit-format", "%s days"),     "86400x",             "x/86400",        NC_("unit-symbols", "day,days")},
        {NULL,       "hour",                N_("Hours"),             NC_("unit-format", "%s hours"),    "3600x",              "x/3600",         NC_("unit-symbols", "hour,hours")},
        {NULL,       "minute",              N_("Minutes"),           NC_("unit-format", "%s minutes"),  "60x",                "x/60",           NC_("unit-symbols", "minute,minutes")},
        {NULL,       "second",              N_("Seconds"),           NC_("unit-format", "%s s"),        "x",                  "x",              NC_("unit-symbols", "second,seconds,s")},
        {NULL,       "millisecond",         N_("Milliseconds"),      NC_("unit-format", "%s ms"),       "0.001x",             "1000x",          NC_("unit-symbols", "millisecond,milliseconds,ms")},
        {NULL,       "microsecond",         N_("Microseconds"),      NC_("unit-format", "%s μs"),       "0.000001x",          "1000000x",       NC_("unit-symbols", "microsecond,microseconds,us,μs")},
        {"temperature", "degree-celcius",   N_("Celsius"),           NC_("unit-format", "%s ˚C"),       "x+273.15",           "x-273.15",       NC_("unit-symbols", "degC,˚C")},
        {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")},
        {NULL,          "degree-kelvin",    N_("Kelvin"),            NC_("unit-format", "%s K"),        "x",                  "x",              NC_("unit-symbols", "K")},
        {NULL,          "degree-rankine",   N_("Rankine"),           NC_("unit-format", "%s ˚R"),       "x*5/9",              "x*9/5",          NC_("unit-symbols", "degR,˚R,˚Ra")},
        { NULL, NULL, NULL, NULL, NULL, NULL }
    };

    if (default_unit_manager)
        return default_unit_manager;

    default_unit_manager = g_object_new(unit_manager_get_type(), NULL);

    unit_manager_add_category(default_unit_manager, "angle",    _("Angle"));
    unit_manager_add_category(default_unit_manager, "length",   _("Length"));
    unit_manager_add_category(default_unit_manager, "area",     _("Area"));
    unit_manager_add_category(default_unit_manager, "volume",   _("Volume"));
    unit_manager_add_category(default_unit_manager, "weight",   _("Weight"));
    unit_manager_add_category(default_unit_manager, "duration", _("Duration"));
    unit_manager_add_category(default_unit_manager, "temperature", _("Temperature"));

    for (i = 0; units[i].name; i++) {
        if (units[i].category)
            category = unit_manager_get_category(default_unit_manager, units[i].category);
        unit_category_add_unit(category, unit_new(units[i].name,
                                                  _(units[i].display_name),
                                                  g_dpgettext2(NULL, "unit-format", units[i].format),
                                                  units[i].from_function, units[i].to_function,
                                                  g_dpgettext2(NULL, "unit-symbols", units[i].symbols)));
    }

    category = unit_manager_add_category(default_unit_manager, "currency", _("Currency"));
    currencies = g_list_copy(currency_manager_get_currencies(currency_manager_get_default()));
    currencies = g_list_sort(currencies, compare_currencies);
    for (iter = currencies; iter; iter = iter->next)
    {
        Currency *currency = iter->data;
        gchar *format;
        Unit *unit;

        /* Translators: result of currency conversion, %s is the symbol, %%s is the placeholder for amount, i.e.: USD100 */
        format = g_strdup_printf(_("%s%%s"), currency_get_symbol(currency));
        unit = unit_new(currency_get_name(currency), currency_get_display_name(currency), format, NULL, NULL, currency_get_name(currency));
        g_free(format);

        unit_category_add_unit(category, unit);
    }
    g_list_free(currencies);

    return default_unit_manager;
}


UnitCategory *
unit_manager_add_category(UnitManager *manager, const gchar *name, const gchar *display_name)
{
    UnitCategory *category;

    g_return_val_if_fail(manager != NULL, NULL);
    g_return_val_if_fail(name != NULL, NULL);
    g_return_val_if_fail(display_name != NULL, NULL);
    g_return_val_if_fail(unit_manager_get_category(manager, name) == NULL, NULL);

    category = unit_category_new(name, display_name);
    manager->priv->categories = g_list_append(manager->priv->categories, category);

    return category;
}


const GList *
unit_manager_get_categories(UnitManager *manager)
{
    g_return_val_if_fail(manager != NULL, NULL);
    return manager->priv->categories;
}


UnitCategory *
unit_manager_get_category(UnitManager *manager, const gchar *category)
{
    GList *iter;
  
    g_return_val_if_fail(manager != NULL, NULL);
    g_return_val_if_fail(category != NULL, NULL);

    for (iter = manager->priv->categories; iter; iter = iter->next) {
        UnitCategory *c = iter->data;
        if (strcmp(unit_category_get_name(c), category) == 0)
            return c;
    }

    return NULL;
}


Unit *
unit_manager_get_unit_by_name(UnitManager *manager, const gchar *name)
{
    GList *iter;
    Unit *u;

    g_return_val_if_fail(manager != NULL, NULL);
    g_return_val_if_fail(name != NULL, NULL);

    for (iter = manager->priv->categories; iter; iter = iter->next) {
        UnitCategory *c = iter->data;
        u = unit_category_get_unit_by_name(c, name);
        if (u)
            return u;
    }

    return NULL; 
}


Unit *
unit_manager_get_unit_by_symbol(UnitManager *manager, const gchar *symbol)
{
    GList *iter;
    Unit *u;

    g_return_val_if_fail(manager != NULL, NULL);
    g_return_val_if_fail(symbol != NULL, NULL);  

    for (iter = manager->priv->categories; iter; iter = iter->next) {
        UnitCategory *c = iter->data;
        u = unit_category_get_unit_by_symbol(c, symbol);
        if (u)
            return u;
    }

    return NULL; 
}


gboolean
unit_manager_convert_by_symbol(UnitManager *manager, const MPNumber *x, const char *x_symbol, const char *z_symbol, MPNumber *z)
{
    GList *iter;

    g_return_val_if_fail(manager != NULL, FALSE);
    g_return_val_if_fail(x != NULL, FALSE);
    g_return_val_if_fail(x_symbol != NULL, FALSE);
    g_return_val_if_fail(z_symbol != NULL, FALSE);
    g_return_val_if_fail(z != NULL, FALSE);

    for (iter = manager->priv->categories; iter; iter = iter->next) {
        UnitCategory *c = iter->data;
        Unit *x_units, *z_units;

        x_units = unit_category_get_unit_by_symbol(c, x_symbol);
        z_units = unit_category_get_unit_by_symbol(c, z_symbol);
        if (x_units && z_units && unit_category_convert(c, x, x_units, z_units, z))
            return TRUE;
    }
  
    return FALSE;
}


static void
unit_manager_class_init(UnitManagerClass *klass)
{
    g_type_class_add_private(klass, sizeof(UnitManagerPrivate));
}


static void
unit_manager_init(UnitManager *manager)
{
    manager->priv = G_TYPE_INSTANCE_GET_PRIVATE(manager, unit_manager_get_type(), UnitManagerPrivate);
}