#include "vim.h"
#if defined(FEAT_ARABIC) || defined(PROTO)
static int A_is_a(int cur_c);
static int A_is_s(int cur_c);
static int A_is_f(int cur_c);
static int chg_c_a2s(int cur_c);
static int chg_c_a2i(int cur_c);
static int chg_c_a2m(int cur_c);
static int chg_c_a2f(int cur_c);
#if 0
static int chg_c_i2m(int cur_c);
#endif
static int chg_c_f2m(int cur_c);
static int chg_c_laa2i(int hid_c);
static int chg_c_laa2f(int hid_c);
static int half_shape(int c);
static int A_firstc_laa(int c1, int c);
static int A_is_harakat(int c);
static int A_is_iso(int c);
static int A_is_formb(int c);
static int A_is_ok(int c);
static int A_is_valid(int c);
static int A_is_special(int c);
static int
A_is_a(int cur_c)
{
switch (cur_c)
{
case a_HAMZA:
case a_ALEF_MADDA:
case a_ALEF_HAMZA_ABOVE:
case a_WAW_HAMZA:
case a_ALEF_HAMZA_BELOW:
case a_YEH_HAMZA:
case a_ALEF:
case a_BEH:
case a_TEH_MARBUTA:
case a_TEH:
case a_THEH:
case a_JEEM:
case a_HAH:
case a_KHAH:
case a_DAL:
case a_THAL:
case a_REH:
case a_ZAIN:
case a_SEEN:
case a_SHEEN:
case a_SAD:
case a_DAD:
case a_TAH:
case a_ZAH:
case a_AIN:
case a_GHAIN:
case a_TATWEEL:
case a_FEH:
case a_QAF:
case a_KAF:
case a_LAM:
case a_MEEM:
case a_NOON:
case a_HEH:
case a_WAW:
case a_ALEF_MAKSURA:
case a_YEH:
return TRUE;
}
return FALSE;
}
static int
A_is_s(int cur_c)
{
switch (cur_c)
{
case a_s_HAMZA:
case a_s_ALEF_MADDA:
case a_s_ALEF_HAMZA_ABOVE:
case a_s_WAW_HAMZA:
case a_s_ALEF_HAMZA_BELOW:
case a_s_YEH_HAMZA:
case a_s_ALEF:
case a_s_BEH:
case a_s_TEH_MARBUTA:
case a_s_TEH:
case a_s_THEH:
case a_s_JEEM:
case a_s_HAH:
case a_s_KHAH:
case a_s_DAL:
case a_s_THAL:
case a_s_REH:
case a_s_ZAIN:
case a_s_SEEN:
case a_s_SHEEN:
case a_s_SAD:
case a_s_DAD:
case a_s_TAH:
case a_s_ZAH:
case a_s_AIN:
case a_s_GHAIN:
case a_s_FEH:
case a_s_QAF:
case a_s_KAF:
case a_s_LAM:
case a_s_MEEM:
case a_s_NOON:
case a_s_HEH:
case a_s_WAW:
case a_s_ALEF_MAKSURA:
case a_s_YEH:
return TRUE;
}
return FALSE;
}
static int
A_is_f(int cur_c)
{
switch (cur_c)
{
case a_f_ALEF_MADDA:
case a_f_ALEF_HAMZA_ABOVE:
case a_f_WAW_HAMZA:
case a_f_ALEF_HAMZA_BELOW:
case a_f_YEH_HAMZA:
case a_f_ALEF:
case a_f_BEH:
case a_f_TEH_MARBUTA:
case a_f_TEH:
case a_f_THEH:
case a_f_JEEM:
case a_f_HAH:
case a_f_KHAH:
case a_f_DAL:
case a_f_THAL:
case a_f_REH:
case a_f_ZAIN:
case a_f_SEEN:
case a_f_SHEEN:
case a_f_SAD:
case a_f_DAD:
case a_f_TAH:
case a_f_ZAH:
case a_f_AIN:
case a_f_GHAIN:
case a_f_FEH:
case a_f_QAF:
case a_f_KAF:
case a_f_LAM:
case a_f_MEEM:
case a_f_NOON:
case a_f_HEH:
case a_f_WAW:
case a_f_ALEF_MAKSURA:
case a_f_YEH:
case a_f_LAM_ALEF_MADDA_ABOVE:
case a_f_LAM_ALEF_HAMZA_ABOVE:
case a_f_LAM_ALEF_HAMZA_BELOW:
case a_f_LAM_ALEF:
return TRUE;
}
return FALSE;
}
static int
chg_c_a2s(int cur_c)
{
switch (cur_c)
{
case a_HAMZA: return a_s_HAMZA;
case a_ALEF_MADDA: return a_s_ALEF_MADDA;
case a_ALEF_HAMZA_ABOVE: return a_s_ALEF_HAMZA_ABOVE;
case a_WAW_HAMZA: return a_s_WAW_HAMZA;
case a_ALEF_HAMZA_BELOW: return a_s_ALEF_HAMZA_BELOW;
case a_YEH_HAMZA: return a_s_YEH_HAMZA;
case a_ALEF: return a_s_ALEF;
case a_TEH_MARBUTA: return a_s_TEH_MARBUTA;
case a_DAL: return a_s_DAL;
case a_THAL: return a_s_THAL;
case a_REH: return a_s_REH;
case a_ZAIN: return a_s_ZAIN;
case a_TATWEEL: return cur_c;
case a_WAW: return a_s_WAW;
case a_ALEF_MAKSURA: return a_s_ALEF_MAKSURA;
case a_BEH: return a_s_BEH;
case a_TEH: return a_s_TEH;
case a_THEH: return a_s_THEH;
case a_JEEM: return a_s_JEEM;
case a_HAH: return a_s_HAH;
case a_KHAH: return a_s_KHAH;
case a_SEEN: return a_s_SEEN;
case a_SHEEN: return a_s_SHEEN;
case a_SAD: return a_s_SAD;
case a_DAD: return a_s_DAD;
case a_TAH: return a_s_TAH;
case a_ZAH: return a_s_ZAH;
case a_AIN: return a_s_AIN;
case a_GHAIN: return a_s_GHAIN;
case a_FEH: return a_s_FEH;
case a_QAF: return a_s_QAF;
case a_KAF: return a_s_KAF;
case a_LAM: return a_s_LAM;
case a_MEEM: return a_s_MEEM;
case a_NOON: return a_s_NOON;
case a_HEH: return a_s_HEH;
case a_YEH: return a_s_YEH;
}
return 0;
}
static int
chg_c_a2i(int cur_c)
{
switch (cur_c)
{
case a_YEH_HAMZA: return a_i_YEH_HAMZA;
case a_HAMZA:
return a_s_HAMZA;
case a_ALEF_MADDA:
return a_s_ALEF_MADDA;
case a_ALEF_HAMZA_ABOVE:
return a_s_ALEF_HAMZA_ABOVE;
case a_WAW_HAMZA:
return a_s_WAW_HAMZA;
case a_ALEF_HAMZA_BELOW:
return a_s_ALEF_HAMZA_BELOW;
case a_ALEF:
return a_s_ALEF;
case a_TEH_MARBUTA:
return a_s_TEH_MARBUTA;
case a_DAL:
return a_s_DAL;
case a_THAL:
return a_s_THAL;
case a_REH:
return a_s_REH;
case a_ZAIN:
return a_s_ZAIN;
case a_TATWEEL:
return cur_c;
case a_WAW:
return a_s_WAW;
case a_ALEF_MAKSURA:
return a_s_ALEF_MAKSURA;
case a_BEH: return a_i_BEH;
case a_TEH: return a_i_TEH;
case a_THEH: return a_i_THEH;
case a_JEEM: return a_i_JEEM;
case a_HAH: return a_i_HAH;
case a_KHAH: return a_i_KHAH;
case a_SEEN: return a_i_SEEN;
case a_SHEEN: return a_i_SHEEN;
case a_SAD: return a_i_SAD;
case a_DAD: return a_i_DAD;
case a_TAH: return a_i_TAH;
case a_ZAH: return a_i_ZAH;
case a_AIN: return a_i_AIN;
case a_GHAIN: return a_i_GHAIN;
case a_FEH: return a_i_FEH;
case a_QAF: return a_i_QAF;
case a_KAF: return a_i_KAF;
case a_LAM: return a_i_LAM;
case a_MEEM: return a_i_MEEM;
case a_NOON: return a_i_NOON;
case a_HEH: return a_i_HEH;
case a_YEH: return a_i_YEH;
}
return 0;
}
static int
chg_c_a2m(int cur_c)
{
switch (cur_c)
{
case a_HAMZA: return a_s_HAMZA;
case a_ALEF_MADDA: return a_f_ALEF_MADDA;
case a_ALEF_HAMZA_ABOVE: return a_f_ALEF_HAMZA_ABOVE;
case a_WAW_HAMZA: return a_f_WAW_HAMZA;
case a_ALEF_HAMZA_BELOW: return a_f_ALEF_HAMZA_BELOW;
case a_YEH_HAMZA: return a_m_YEH_HAMZA;
case a_ALEF: return a_f_ALEF;
case a_BEH: return a_m_BEH;
case a_TEH_MARBUTA: return a_f_TEH_MARBUTA;
case a_TEH: return a_m_TEH;
case a_THEH: return a_m_THEH;
case a_JEEM: return a_m_JEEM;
case a_HAH: return a_m_HAH;
case a_KHAH: return a_m_KHAH;
case a_DAL: return a_f_DAL;
case a_THAL: return a_f_THAL;
case a_REH: return a_f_REH;
case a_ZAIN: return a_f_ZAIN;
case a_SEEN: return a_m_SEEN;
case a_SHEEN: return a_m_SHEEN;
case a_SAD: return a_m_SAD;
case a_DAD: return a_m_DAD;
case a_TAH: return a_m_TAH;
case a_ZAH: return a_m_ZAH;
case a_AIN: return a_m_AIN;
case a_GHAIN: return a_m_GHAIN;
case a_TATWEEL: return cur_c;
case a_FEH: return a_m_FEH;
case a_QAF: return a_m_QAF;
case a_KAF: return a_m_KAF;
case a_LAM: return a_m_LAM;
case a_MEEM: return a_m_MEEM;
case a_NOON: return a_m_NOON;
case a_HEH: return a_m_HEH;
case a_WAW: return a_f_WAW;
case a_ALEF_MAKSURA: return a_f_ALEF_MAKSURA;
case a_YEH: return a_m_YEH;
}
return 0;
}
static int
chg_c_a2f(int cur_c)
{
switch (cur_c)
{
case a_HAMZA: return a_s_HAMZA;
case a_ALEF_MADDA: return a_f_ALEF_MADDA;
case a_ALEF_HAMZA_ABOVE: return a_f_ALEF_HAMZA_ABOVE;
case a_WAW_HAMZA: return a_f_WAW_HAMZA;
case a_ALEF_HAMZA_BELOW: return a_f_ALEF_HAMZA_BELOW;
case a_YEH_HAMZA: return a_f_YEH_HAMZA;
case a_ALEF: return a_f_ALEF;
case a_BEH: return a_f_BEH;
case a_TEH_MARBUTA: return a_f_TEH_MARBUTA;
case a_TEH: return a_f_TEH;
case a_THEH: return a_f_THEH;
case a_JEEM: return a_f_JEEM;
case a_HAH: return a_f_HAH;
case a_KHAH: return a_f_KHAH;
case a_DAL: return a_f_DAL;
case a_THAL: return a_f_THAL;
case a_REH: return a_f_REH;
case a_ZAIN: return a_f_ZAIN;
case a_SEEN: return a_f_SEEN;
case a_SHEEN: return a_f_SHEEN;
case a_SAD: return a_f_SAD;
case a_DAD: return a_f_DAD;
case a_TAH: return a_f_TAH;
case a_ZAH: return a_f_ZAH;
case a_AIN: return a_f_AIN;
case a_GHAIN: return a_f_GHAIN;
case a_TATWEEL: return cur_c;
case a_FEH: return a_f_FEH;
case a_QAF: return a_f_QAF;
case a_KAF: return a_f_KAF;
case a_LAM: return a_f_LAM;
case a_MEEM: return a_f_MEEM;
case a_NOON: return a_f_NOON;
case a_HEH: return a_f_HEH;
case a_WAW: return a_f_WAW;
case a_ALEF_MAKSURA: return a_f_ALEF_MAKSURA;
case a_YEH: return a_f_YEH;
}
return 0;
}
#if 0
static int
chg_c_i2m(int cur_c)
{
switch (cur_c)
{
case a_i_YEH_HAMZA: return a_m_YEH_HAMZA;
case a_i_BEH: return a_m_BEH;
case a_i_TEH: return a_m_TEH;
case a_i_THEH: return a_m_THEH;
case a_i_JEEM: return a_m_JEEM;
case a_i_HAH: return a_m_HAH;
case a_i_KHAH: return a_m_KHAH;
case a_i_SEEN: return a_m_SEEN;
case a_i_SHEEN: return a_m_SHEEN;
case a_i_SAD: return a_m_SAD;
case a_i_DAD: return a_m_DAD;
case a_i_TAH: return a_m_TAH;
case a_i_ZAH: return a_m_ZAH;
case a_i_AIN: return a_m_AIN;
case a_i_GHAIN: return a_m_GHAIN;
case a_i_FEH: return a_m_FEH;
case a_i_QAF: return a_m_QAF;
case a_i_KAF: return a_m_KAF;
case a_i_LAM: return a_m_LAM;
case a_i_MEEM: return a_m_MEEM;
case a_i_NOON: return a_m_NOON;
case a_i_HEH: return a_m_HEH;
case a_i_YEH: return a_m_YEH;
}
return 0;
}
#endif
static int
chg_c_f2m(int cur_c)
{
switch (cur_c)
{
case a_f_YEH_HAMZA: return a_m_YEH_HAMZA;
case a_f_WAW_HAMZA:
case a_f_ALEF:
case a_f_TEH_MARBUTA:
case a_f_DAL:
case a_f_THAL:
case a_f_REH:
case a_f_ZAIN:
case a_f_WAW:
case a_f_ALEF_MAKSURA:
return cur_c;
case a_f_BEH: return a_m_BEH;
case a_f_TEH: return a_m_TEH;
case a_f_THEH: return a_m_THEH;
case a_f_JEEM: return a_m_JEEM;
case a_f_HAH: return a_m_HAH;
case a_f_KHAH: return a_m_KHAH;
case a_f_SEEN: return a_m_SEEN;
case a_f_SHEEN: return a_m_SHEEN;
case a_f_SAD: return a_m_SAD;
case a_f_DAD: return a_m_DAD;
case a_f_TAH: return a_m_TAH;
case a_f_ZAH: return a_m_ZAH;
case a_f_AIN: return a_m_AIN;
case a_f_GHAIN: return a_m_GHAIN;
case a_f_FEH: return a_m_FEH;
case a_f_QAF: return a_m_QAF;
case a_f_KAF: return a_m_KAF;
case a_f_LAM: return a_m_LAM;
case a_f_MEEM: return a_m_MEEM;
case a_f_NOON: return a_m_NOON;
case a_f_HEH: return a_m_HEH;
case a_f_YEH: return a_m_YEH;
}
return 0;
}
static int
chg_c_laa2i(int hid_c)
{
switch (hid_c)
{
case a_ALEF_MADDA: return a_s_LAM_ALEF_MADDA_ABOVE;
case a_ALEF_HAMZA_ABOVE: return a_s_LAM_ALEF_HAMZA_ABOVE;
case a_ALEF_HAMZA_BELOW: return a_s_LAM_ALEF_HAMZA_BELOW;
case a_ALEF: return a_s_LAM_ALEF;
}
return 0;
}
static int
chg_c_laa2f(int hid_c)
{
switch (hid_c)
{
case a_ALEF_MADDA: return a_f_LAM_ALEF_MADDA_ABOVE;
case a_ALEF_HAMZA_ABOVE: return a_f_LAM_ALEF_HAMZA_ABOVE;
case a_ALEF_HAMZA_BELOW: return a_f_LAM_ALEF_HAMZA_BELOW;
case a_ALEF: return a_f_LAM_ALEF;
}
return 0;
}
static int
half_shape(int c)
{
if (A_is_a(c))
return chg_c_a2i(c);
if (A_is_valid(c) && A_is_f(c))
return chg_c_f2m(c);
return 0;
}
int
arabic_shape(
int c,
int *ccp,
int *c1p,
int prev_c,
int prev_c1,
int next_c)
{
int curr_c;
int shape_c;
int curr_laa;
int prev_laa;
if (!A_is_ok(c))
return c;
shape_c = half_shape(prev_c);
curr_c = c;
curr_laa = A_firstc_laa(c, *c1p);
prev_laa = A_firstc_laa(prev_c, prev_c1);
if (curr_laa)
{
if (A_is_valid(prev_c) && !A_is_f(shape_c)
&& !A_is_s(shape_c) && !prev_laa)
curr_c = chg_c_laa2f(curr_laa);
else
curr_c = chg_c_laa2i(curr_laa);
*c1p = 0;
}
else if (!A_is_valid(prev_c) && A_is_valid(next_c))
curr_c = chg_c_a2i(c);
else if (!shape_c || A_is_f(shape_c) || A_is_s(shape_c) || prev_laa)
curr_c = A_is_valid(next_c) ? chg_c_a2i(c) : chg_c_a2s(c);
else if (A_is_valid(next_c))
#if 0
curr_c = A_is_iso(c) ? chg_c_a2m(c) : chg_c_i2m(c);
#else
curr_c = A_is_iso(c) ? chg_c_a2m(c) : 0;
#endif
else if (A_is_valid(prev_c))
curr_c = chg_c_a2f(c);
else
curr_c = chg_c_a2s(c);
if (curr_c == NUL)
curr_c = c;
if (curr_c != c && ccp != NULL)
{
char_u buf[MB_MAXBYTES + 1];
(*mb_char2bytes)(curr_c, buf);
*ccp = buf[0];
}
return curr_c;
}
static int
A_firstc_laa(
int c,
int c1)
{
if (c1 != NUL && c == a_LAM && !A_is_harakat(c1))
return c1;
return 0;
}
static int
A_is_harakat(int c)
{
return (c >= a_FATHATAN && c <= a_SUKUN);
}
static int
A_is_iso(int c)
{
return ((c >= a_HAMZA && c <= a_GHAIN)
|| (c >= a_TATWEEL && c <= a_HAMZA_BELOW)
|| c == a_MINI_ALEF);
}
static int
A_is_formb(int c)
{
return ((c >= a_s_FATHATAN && c <= a_s_DAMMATAN)
|| c == a_s_KASRATAN
|| (c >= a_s_FATHA && c <= a_f_LAM_ALEF)
|| c == a_BYTE_ORDER_MARK);
}
static int
A_is_ok(int c)
{
return (A_is_iso(c) || A_is_formb(c));
}
static int
A_is_valid(int c)
{
return (A_is_ok(c) && !A_is_special(c));
}
static int
A_is_special(int c)
{
return (c == a_HAMZA || c == a_s_HAMZA);
}
#endif