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#include "sal/config.h"

#include <cstddef>

#include "rtl/tencinfo.h"
#include "sal/types.h"

#include "convertsimple.hxx"
#include "tenchelp.hxx"

/* Conversion tables for the Devanagari version of ISCII (IS 13194:1991).
 *
 * They do not map the ISCII characters INV (0xD9), ATR (0xEF), and EXT (0xF0).
 * They do not map U+0958--095E to sequences of two ISCII characters, of which
 * the second would be the combining nukta (0xE9).
 */

/* The following table is based on LGPL code by Sandeep Patnaik
 * (patnaik@students.iiit.net) and Sunil Mohan Adapa
 * (sunilmohanadapa@postmark.net).
 */
#define RTL_TEXTENC_ISCII_DEVANAGARI_START 0xA1
#define RTL_TEXTENC_ISCII_DEVANAGARI_END 0xFA
static sal_uInt16 const
aImplIsciiDevanagariToUniTab[RTL_TEXTENC_ISCII_DEVANAGARI_END
                             - RTL_TEXTENC_ISCII_DEVANAGARI_START + 1]
= {         0x0901, 0x0902, 0x0903, 0x0905, 0x0906, 0x0907, 0x0908, /* A0 */
    0x0909, 0x090A, 0x090B, 0x090E, 0x090F, 0x0910, 0x090D, 0x0912,
    0x0913, 0x0914, 0x0911, 0x0915, 0x0916, 0x0917, 0x0918, 0x0919, /* B0 */
    0x091A, 0x091B, 0x091C, 0x091D, 0x091E, 0x091F, 0x0920, 0x0921,
    0x0922, 0x0923, 0x0924, 0x0925, 0x0926, 0x0927, 0x0928, 0x0929, /* C0 */
    0x092A, 0x092B, 0x092C, 0x092D, 0x092E, 0x092F, 0x095F, 0x0930,
    0x0931, 0x0932, 0x0933, 0x0934, 0x0935, 0x0936, 0x0937, 0x0938, /* D0 */
    0x0939,      0, 0x093E, 0x093F, 0x0940, 0x0941, 0x0942, 0x0943,
    0x0946, 0x0947, 0x0948, 0x0945, 0x094A, 0x094B, 0x094C, 0x0949, /* E0 */
    0x094D, 0x093C, 0x0964,      0,      0,      0,      0,      0,
         0, 0x0966, 0x0967, 0x0968, 0x0969, 0x096A, 0x096B, 0x096C, /* F0 */
    0x096D, 0x096E, 0x096F };

#define RTL_TEXTENC_UNICODE_DEVANAGARI_START 0x0901
#define RTL_TEXTENC_UNICODE_DEVANAGARI_END 0x096F
static sal_uChar const
aImplUniToIsciiDevanagariTab[RTL_TEXTENC_UNICODE_DEVANAGARI_END
                             - RTL_TEXTENC_UNICODE_DEVANAGARI_START + 1]
= {       0xA1, 0xA2, 0xA3,    0, 0xA4, 0xA5, 0xA6, /* U+0900 */
    0xA7, 0xA8, 0xA9, 0xAA,    0, 0xAE, 0xAB, 0xAC,
    0xAD, 0xB2, 0xAF, 0xB0, 0xB1, 0xB3, 0xB4, 0xB5, /* U+0910 */
    0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD,
    0xBE, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, /* U+0920 */
    0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD,
    0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, /* U+0930 */
    0xD7, 0xD8,    0,    0, 0xE9,    0, 0xDA, 0xDB,
    0xDC, 0xDD, 0xDE, 0xDF,    0, 0xE3, 0xE0, 0xE1, /* U+0940 */
    0xE2, 0xE7, 0xE4, 0xE5, 0xE6, 0xE8,    0,    0,
       0,    0,    0,    0,    0,    0,    0,    0, /* U+0950 */
       0,    0,    0,    0,    0,    0,    0, 0xCE,
       0,    0,    0,    0, 0xEA,    0, 0xF1, 0xF2, /* U+0960 */
    0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA };

static ImplByteConvertData const aImplIsciiDevanagariConvertData
= { aImplIsciiDevanagariToUniTab,
    NULL,
    RTL_TEXTENC_ISCII_DEVANAGARI_START, RTL_TEXTENC_ISCII_DEVANAGARI_END,
    NOTABUNI_START, NOTABUNI_END,
    aImplUniToIsciiDevanagariTab,
    NULL,
    NULL,
    RTL_TEXTENC_UNICODE_DEVANAGARI_START, RTL_TEXTENC_UNICODE_DEVANAGARI_END,
    NOTABCHAR_START, NOTABCHAR_END,
    0 };

static ImplTextEncodingData const aImplIsciiDevanagariTextEncodingData
    = { { &aImplIsciiDevanagariConvertData,
          &sal::detail::textenc::convertCharToUnicode,
          &sal::detail::textenc::convertUnicodeToChar,
          NULL,
          NULL,
          NULL,
          NULL,
          NULL,
          NULL },
        1,
        1,
        1,
        1,
        NULL,
        "x-iscii-de",
        RTL_TEXTENCODING_INFO_ASCII };