(*
 * Hedgewars, a free turn based strategy game
 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
 *
 * 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; version 2 of the License
 *
 * 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
 *)

{$INCLUDE "options.inc"}

unit uLocale;
interface
uses uTypes;

const MAX_EVENT_STRINGS = 100;

procedure LoadLocale(FileName: shortstring);
function  Format(fmt: shortstring; var arg: shortstring): shortstring;
function  FormatA(fmt: ansistring; var arg: ansistring): ansistring;
function  GetEventString(e: TEventId): ansistring;

{$IFDEF HWLIBRARY}
procedure LoadLocaleWrapper(path: pchar; filename: pchar); cdecl; export;
{$ENDIF}

implementation
uses uRandom, uUtils, uVariables, uDebug, uPhysFSLayer;

var trevt: array[TEventId] of array [0..Pred(MAX_EVENT_STRINGS)] of ansistring;
    trevt_n: array[TEventId] of integer;

procedure LoadLocale(FileName: shortstring);
var s: ansistring;
    f: pfsFile;
    a, b, c: LongInt;
    first: array[TEventId] of boolean;
    e: TEventId;
begin
for e:= Low(TEventId) to High(TEventId) do
    first[e]:= true;

f:= pfsOpenRead(FileName);
TryDo(f <> nil, 'Cannot load locale "' + FileName + '"', false);

s:= '';

if f <> nil then
    begin
    while not pfsEof(f) do
        begin
        pfsReadLnA(f, s);
        if Length(s) = 0 then
            continue;
        if (s[1] < '0') or (s[1] > '9') then
            continue;
        TryDo(Length(s) > 6, 'Load locale: empty string', true);
        {$IFNDEF PAS2C}
        val(s[1]+s[2], a, c);
        TryDo(c = 0, ansistring('Load locale: numbers should be two-digit: ') + s, true);
        val(s[4]+s[5], b, c);
        TryDo(c = 0, ansistring('Load locale: numbers should be two-digit: ') + s, true);
        {$ELSE}
        val(s[1]+s[2], a);
        val(s[4]+s[5], b);
        {$ENDIF}
        TryDo(s[3] = ':', 'Load locale: ":" expected', true);
        TryDo(s[6] = '=', 'Load locale: "=" expected', true);
        Delete(s, 1, 6);
        case a of
            0: if (b >=0) and (b <= ord(High(TAmmoStrId))) then
                trammo[TAmmoStrId(b)]:= s;
            1: if (b >=0) and (b <= ord(High(TMsgStrId))) then
                trmsg[TMsgStrId(b)]:= s;
            2: if (b >=0) and (b <= ord(High(TEventId))) then
                begin
                TryDo(trevt_n[TEventId(b)] < MAX_EVENT_STRINGS, 'Too many event strings in ' + IntToStr(a) + ':' + IntToStr(b), false);
                if first[TEventId(b)] then
                    begin
                    trevt_n[TEventId(b)]:= 0;
                    first[TEventId(b)]:= false;
                    end;
                trevt[TEventId(b)][trevt_n[TEventId(b)]]:= s;
                inc(trevt_n[TEventId(b)]);
                end;
            3: if (b >=0) and (b <= ord(High(TAmmoStrId))) then
                trammoc[TAmmoStrId(b)]:= s;
            4: if (b >=0) and (b <= ord(High(TAmmoStrId))) then
                trammod[TAmmoStrId(b)]:= s;
            5: if (b >=0) and (b <= ord(High(TGoalStrId))) then
                trgoal[TGoalStrId(b)]:= s;
           end;
       end;
   pfsClose(f);
   end;
end;

function GetEventString(e: TEventId): ansistring;
begin
    if trevt_n[e] = 0 then // no messages for this event type?
        GetEventString:= '*missing translation*'
    else
        GetEventString:= trevt[e][GetRandom(trevt_n[e])]; // Pick a random message and return it
end;

function Format(fmt: shortstring; var arg: shortstring): shortstring;
var i: LongInt;
begin
i:= Pos('%1', fmt);
if i = 0 then
    Format:= fmt
else
    Format:= copy(fmt, 1, i - 1) + arg + Format(copy(fmt, i + 2, Length(fmt) - i - 1), arg)
end;

function FormatA(fmt: ansistring; var arg: ansistring): ansistring;
var i: LongInt;
begin
i:= Pos('%1', fmt);
if i = 0 then
    FormatA:= fmt
else
    FormatA:= copy(fmt, 1, i - 1) + arg + FormatA(copy(fmt, i + 2, Length(fmt) - i - 1), arg)
end;

{$IFDEF HWLIBRARY}
procedure LoadLocaleWrapper(path: pchar; filename: pchar); cdecl; export;
begin
    PathPrefix := Strpas(path);
 
    uUtils.initModule(false);
    uPhysFSLayer.initModule;
 
    LoadLocale(Strpas(filename));
 
    uPhysFSLayer.freeModule;
    uUtils.freeModule;
end;
{$ENDIF}

end.