(*
    Copyright 2021-2023 Anton Krotov

    This file is part of CEdit.

    CEdit 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 3 of the License, or
    (at your option) any later version.

    CEdit 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 CEdit. If not, see <http://www.gnu.org/licenses/>.
*)

MODULE Ini;

IMPORT

    SYSTEM, RW, Text, Utils, File, List, Languages, Lines;


CONST

    fileName = "cedit.ini";
    libName = "libini.obj";

    MAX_LEN = 32;
    MAX_SECTIONS* = 10;


TYPE

    tString = ARRAY 128 OF CHAR;

    tSectionName = ARRAY MAX_LEN OF WCHAR;
    tASCIISectionName = ARRAY MAX_LEN OF CHAR;

    tSection* = POINTER TO RECORD (List.tItem)
        name*: tSectionName
    END;


VAR

    IniFileName: RW.tFileName;
    sections*: List.tList;

    curSection*: tASCIISectionName;
    curSectionNum*: INTEGER;

    blink*, font*, theme*, lineSpacing*: INTEGER;
    buildScript*, runScript*, debugScript*: RW.tFileName;
    lineNumbers*, autoIndents*, autoBrackets*, trimSpace*: BOOLEAN;


PROCEDURE [stdcall,  libName, "ini_get_color"]     get_color (f_name: RW.tFileName; sec_name: tASCIISectionName; key_name: tString; def_val: INTEGER): INTEGER; END;
PROCEDURE [stdcall,  libName, "ini_get_int"]       get_int (f_name: RW.tFileName; sec_name: tASCIISectionName; key_name: tString; def_val: INTEGER): INTEGER; END;
PROCEDURE [stdcall,  libName, "ini_get_str"]       get_str (f_name, sec_name, key_name, buffer, buf_len, def_val: INTEGER): INTEGER; END;
PROCEDURE [stdcall,  libName, "ini_enum_sections"] enum_sections (f_name: RW.tFileName; callback: INTEGER); END;
PROCEDURE [stdcall-, libName, "ini_set_int"]       set_int (f_name, sec_name, key_name, val: INTEGER): INTEGER; END;

PROCEDURE getColor (key: tString; def: INTEGER): INTEGER;
    RETURN get_color(IniFileName, curSection, key, def)
END getColor;


PROCEDURE getStr* (secName, keyName: ARRAY OF CHAR; VAR s: ARRAY OF CHAR);
BEGIN
    IF get_str(SYSTEM.ADR(IniFileName[0]), SYSTEM.ADR(secName[0]), SYSTEM.ADR(keyName[0]), SYSTEM.ADR(s[0]), LEN(s) - 1, SYSTEM.SADR("")) = -1 THEN
        s[0] := 0X
    END
END getStr;


PROCEDURE setInt* (secName, keyName: ARRAY OF CHAR; val: INTEGER);
BEGIN
    set_int(SYSTEM.ADR(IniFileName[0]), SYSTEM.ADR(secName[0]), SYSTEM.ADR(keyName[0]), val)
END setInt;


PROCEDURE [stdcall] section_callback (fileName, sectionName: RW.tFileName): INTEGER;
VAR
    section: tSection;
    name: tSectionName;
    i: INTEGER;
BEGIN
    IF sections.count < MAX_SECTIONS THEN
        i := 0;
        WHILE (i < MAX_LEN - 1) & (sectionName[i] # 0X) DO
            name[i] := WCHR(ORD(sectionName[i]));
            INC(i)
        END;
        name[i] := 0X
    END;
    IF Utils.streq(SYSTEM.ADR(name[0]), SYSTEM.WSADR("color_"), 6) THEN
        Utils.reverse(name);
        name[LENGTH(name) - 6] := 0X;
        Utils.reverse(name);
        NEW(section);
        section.name := name;
        List.append(sections, section)
    END
    RETURN 1
END section_callback;


PROCEDURE selectSection* (idx: INTEGER);
VAR
    i: INTEGER;
    item: List.tItem;
    section: tSection;

    text, back, seltext, selback, modified, saved, curline, numtext, numback,
    comment, string, escape, num, delim, key1, key2, key3: INTEGER;
BEGIN
    IF (0 <= idx) & (idx < sections.count) THEN
        curSectionNum := idx;
        item := List.getItem(sections, idx);
        section := item(tSection);
        i := 0;
        WHILE section.name[i] # 0X DO
            curSection[i] := CHR(ORD(section.name[i]));
            INC(i)
        END;
        curSection[i] := 0X;
        Utils.reverse8(curSection);
        Utils.append8(curSection, "_roloc");
        Utils.reverse8(curSection)
    ELSE
        curSection := ""
    END;

    text     := getColor("text",     0000000H);
    back     := getColor("back",     0FFFFFFH);
    seltext  := getColor("seltext",  0FFFFFFH);
    selback  := getColor("selback",  00000FFH);
    modified := getColor("modified", 0E8E800H);
    saved    := getColor("saved",    000D000H);
    curline  := getColor("curline",  0FFFFC8H);
    numtext  := getColor("numtext",  0000000H);
    numback  := getColor("numback",  0E6E6E6H);

    comment  := getColor("comment",  0800080H);
    string   := getColor("string",   0008000H);
    num      := getColor("num",      0800000H);
    delim    := getColor("delim",    0000080H);
    key1     := getColor("key1",     0000080H);
    key2     := getColor("key2",     0008080H);
    key3     := getColor("key3",     0008080H);
    escape   := getColor("escape",   string);

    Text.setColors(text, back, seltext, selback, modified, saved, curline, numtext, numback,
        comment, string, escape, num, delim, key1, key2, key3);
END selectSection;


PROCEDURE getSettings*;
BEGIN
	Lines.setTabs(get_int(IniFileName, "settings", "tab", 4));
	blink := get_int(IniFileName, "settings", "blink", 70);
	lineNumbers  := get_int(IniFileName, "settings", "line_numbers",  1) # 0;
	autoIndents  := get_int(IniFileName, "settings", "auto_indents",  1) # 0;
	autoBrackets := get_int(IniFileName, "settings", "auto_brackets", 0) # 0;
	trimSpace    := get_int(IniFileName, "settings", "trim_space",    1) # 0;
	font := get_int(IniFileName, "settings", "font", 1);
	IF (font < 0) OR (font > 2) THEN
		font := 1
	END;
	lineSpacing := get_int(IniFileName, "settings", "line_spacing", 2);
	IF (lineSpacing < 0) OR (lineSpacing > Text.MaxLineSpacing) THEN
		lineSpacing := 2
	END;
	theme := get_int(IniFileName, "settings", "theme", 0);
	IF (theme < 0) OR (theme >= sections.count) THEN
		theme := 0
	END;
    getStr("settings", "build", buildScript);
    getStr("settings", "run",   runScript);
    getStr("settings", "debug", debugScript);
END getSettings;


PROCEDURE load* (path: RW.tFileName);
BEGIN
    sections := List.create(NIL);

    Utils.getPath(path, IniFileName);
    Utils.append8(IniFileName, Utils.SLASH);
    Utils.append8(IniFileName, fileName);

    IF ~File.Exists(IniFileName) THEN
    	IniFileName := "/sys/settings/" + fileName
    END;

    enum_sections(IniFileName, SYSTEM.ADR(section_callback));
    Languages.init(getStr);
    selectSection(theme);
END load;


END Ini.