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neovim/src/nvim/farsi.c
Michael Reed e1e3edf9d4 farsi.c: Misc. fixes 
- Converted some functions to return bools, and changed their respective
  comments to reflect that.
- Minor fixes to a few comments
2014-11-15 17:17:21 -05:00

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/// @file farsi.c
///
/// Functions for Farsi language
#include <stdbool.h>
#include "nvim/cursor.h"
#include "nvim/edit.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_eval.h"
#include "nvim/ex_getln.h"
#include "nvim/farsi.h"
#include "nvim/getchar.h"
#include "nvim/memline.h"
#include "nvim/message.h"
#include "nvim/misc1.h"
#include "nvim/misc2.h"
#include "nvim/screen.h"
#include "nvim/strings.h"
#include "nvim/vim.h"
#include "nvim/ascii.h"
#define SRC_EDT 0
#define SRC_CMD 1
#define AT_CURSOR 0
// Special Farsi text messages
const char_u farsi_text_1[] = {
YE_, _SIN, RE, ALEF_, _FE, ' ', 'V', 'I', 'M',
' ', F_HE, _BE, ' ', SHIN, RE, _GAF, DAL, ' ', NOON,
ALEF_, _YE, ALEF_, _PE, '\0'
};
const char_u farsi_text_2[] = {
YE_, _SIN, RE, ALEF_, _FE, ' ', FARSI_3, FARSI_3,
FARSI_4, FARSI_2, ' ', DAL, RE, ALEF, DAL, _NOON,
ALEF_, _TE, _SIN, ALEF, ' ', F_HE, _BE, ' ', SHIN,
RE, _GAF, DAL, ' ', NOON, ALEF_, _YE, ALEF_, _PE, '\0'
};
const char_u farsi_text_3[] = {
DAL, WAW, _SHIN, _YE, _MIM, _NOON, ' ', YE_, _NOON,
ALEF_, _BE, _YE, _TE, _SHIN, _PE, ' ', 'R', 'E', 'P', 'L',
'A', 'C', 'E', ' ', NOON, ALEF_, _MIM, RE, _FE, ZE, ALEF,
' ', 'R', 'E', 'V', 'E', 'R', 'S', 'E', ' ', 'I', 'N',
'S', 'E', 'R', 'T', ' ', SHIN, WAW, RE, ' ', ALEF_, _BE,
' ', YE_, _SIN, RE, ALEF_, _FE, ' ', RE, DAL, ' ', RE,
ALEF_, _KAF, ' ', MIM, ALEF_, _GAF, _NOON, _HE, '\0'
};
const char_u farsi_text_5[] = {
' ', YE_, _SIN, RE, ALEF_, _FE, '\0'
};
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "farsi.c.generated.h"
#endif
/// Convert the given Farsi character into a _X or _X_ type
///
/// @param c The character to convert.
///
/// @return Farsi character converted to a _X or _X_ type.
static int toF_Xor_X_(int c)
{
int tempc;
switch (c) {
case BE:
return _BE;
case PE:
return _PE;
case TE:
return _TE;
case SE:
return _SE;
case JIM:
return _JIM;
case CHE:
return _CHE;
case HE_J:
return _HE_J;
case XE:
return _XE;
case SIN:
return _SIN;
case SHIN:
return _SHIN;
case SAD:
return _SAD;
case ZAD:
return _ZAD;
case AYN:
return _AYN;
case AYN_:
return _AYN_;
case GHAYN:
return _GHAYN;
case GHAYN_:
return _GHAYN_;
case FE:
return _FE;
case GHAF:
return _GHAF;
case KAF:
return _KAF;
case GAF:
return _GAF;
case LAM:
return _LAM;
case MIM:
return _MIM;
case NOON:
return _NOON;
case YE:
case YE_:
return _YE;
case YEE:
case YEE_:
return _YEE;
case IE:
case IE_:
return _IE;
case F_HE:
tempc = _HE;
if (p_ri &&
(curwin->w_cursor.col + 1 < (colnr_T)STRLEN(get_cursor_line_ptr()))) {
inc_cursor();
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = _HE_;
}
dec_cursor();
}
if (!p_ri && STRLEN(get_cursor_line_ptr())) {
dec_cursor();
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = _HE_;
}
inc_cursor();
}
return tempc;
}
return 0;
}
/// Convert the given Farsi character into Farsi capital character.
///
/// @param c The character to convert.
///
/// @return Character converted to the Farsi capital leter.
int toF_TyA(int c)
{
switch (c) {
case ALEF_:
return ALEF;
case ALEF_U_H_:
return ALEF_U_H;
case _BE:
return BE;
case _PE:
return PE;
case _TE:
return TE;
case _SE:
return SE;
case _JIM:
return JIM;
case _CHE:
return CHE;
case _HE_J:
return HE_J;
case _XE:
return XE;
case _SIN:
return SIN;
case _SHIN:
return SHIN;
case _SAD:
return SAD;
case _ZAD:
return ZAD;
case _AYN:
case AYN_:
case _AYN_:
return AYN;
case _GHAYN:
case GHAYN_:
case _GHAYN_:
return GHAYN;
case _FE:
return FE;
case _GHAF:
return GHAF;
// I am not sure what it is !!!
// case _KAF_H:
case _KAF:
return KAF;
case _GAF:
return GAF;
case _LAM:
return LAM;
case _MIM:
return MIM;
case _NOON:
return NOON;
case _YE:
case YE_:
return YE;
case _YEE:
case YEE_:
return YEE;
case TEE_:
return TEE;
case _IE:
case IE_:
return IE;
case _HE:
case _HE_:
return F_HE;
}
return c;
}
/// Is the character under the cursor+offset in the given buffer a join type.
/// That is a character that is combined with the others.
/// Note: the offset is used only for command line buffer.
///
/// @param src
/// @param offset
///
/// @return true if the character under the cursor+offset is a join type.
static bool F_is_TyB_TyC_TyD(int src, int offset)
{
int c;
if (src == SRC_EDT) {
c = gchar_cursor();
} else {
c = cmd_gchar(AT_CURSOR + offset);
}
switch (c) {
case _LAM:
case _BE:
case _PE:
case _TE:
case _SE:
case _JIM:
case _CHE:
case _HE_J:
case _XE:
case _SIN:
case _SHIN:
case _SAD:
case _ZAD:
case _TA:
case _ZA:
case _AYN:
case _AYN_:
case _GHAYN:
case _GHAYN_:
case _FE:
case _GHAF:
case _KAF:
case _KAF_H:
case _GAF:
case _MIM:
case _NOON:
case _YE:
case _YEE:
case _IE:
case _HE_:
case _HE:
return true;
}
return false;
}
/// Is the Farsi character one of the terminating only type.
///
/// @param c The character to check.
///
/// @return true if the Farsi character is one of the terminating only types.
static bool F_is_TyE(int c)
{
switch (c) {
case ALEF_A:
case ALEF_D_H:
case DAL:
case ZAL:
case RE:
case ZE:
case JE:
case WAW:
case WAW_H:
case HAMZE:
return true;
}
return false;
}
/// Is the Farsi character one of the none leading type.
///
/// @param c The character to check.
///
/// @return true if the Farsi character is one of the none-leading types.
static bool F_is_TyC_TyD(int c)
{
switch (c) {
case ALEF_:
case ALEF_U_H_:
case _AYN_:
case AYN_:
case _GHAYN_:
case GHAYN_:
case _HE_:
case YE_:
case IE_:
case TEE_:
case YEE_:
return true;
}
return false;
}
/// Convert a none leading Farsi char into a leading type.
///
/// @param c The character to convert.
///
/// @return The character converted into a leading type.
static int toF_TyB(int c)
{
switch (c) {
case ALEF_:
return ALEF;
case ALEF_U_H_:
return ALEF_U_H;
case _AYN_:
return _AYN;
case AYN_:
// exception - there are many of them
return AYN;
case _GHAYN_:
return _GHAYN;
case GHAYN_:
// exception - there are many of them
return GHAYN;
case _HE_:
return _HE;
case YE_:
return YE;
case IE_:
return IE;
case TEE_:
return TEE;
case YEE_:
return YEE;
}
return c;
}
/// Overwrite the current redo and cursor characters + left adjust
///
/// @param c
static void put_curr_and_l_to_X(int c)
{
int tempc;
if (curwin->w_p_rl && p_ri) {
return;
}
if ((curwin->w_cursor.col < (colnr_T)STRLEN(get_cursor_line_ptr()))) {
if ((p_ri && curwin->w_cursor.col) || !p_ri) {
if (p_ri) {
dec_cursor();
} else {
inc_cursor();
}
if (F_is_TyC_TyD((tempc = gchar_cursor()))) {
pchar_cursor(toF_TyB(tempc));
AppendCharToRedobuff(K_BS);
AppendCharToRedobuff(tempc);
}
if (p_ri) {
inc_cursor();
} else {
dec_cursor();
}
}
}
put_and_redo(c);
}
static void put_and_redo(int c)
{
pchar_cursor(c);
AppendCharToRedobuff(K_BS);
AppendCharToRedobuff(c);
}
/// Change the char. under the cursor to a X_ or X type
static void chg_c_toX_orX(void)
{
int tempc, curc;
switch ((curc = gchar_cursor())) {
case _BE:
tempc = BE;
break;
case _PE:
tempc = PE;
break;
case _TE:
tempc = TE;
break;
case _SE:
tempc = SE;
break;
case _JIM:
tempc = JIM;
break;
case _CHE:
tempc = CHE;
break;
case _HE_J:
tempc = HE_J;
break;
case _XE:
tempc = XE;
break;
case _SIN:
tempc = SIN;
break;
case _SHIN:
tempc = SHIN;
break;
case _SAD:
tempc = SAD;
break;
case _ZAD:
tempc = ZAD;
break;
case _FE:
tempc = FE;
break;
case _GHAF:
tempc = GHAF;
break;
case _KAF_H:
case _KAF:
tempc = KAF;
break;
case _GAF:
tempc = GAF;
break;
case _AYN:
tempc = AYN;
break;
case _AYN_:
tempc = AYN_;
break;
case _GHAYN:
tempc = GHAYN;
break;
case _GHAYN_:
tempc = GHAYN_;
break;
case _LAM:
tempc = LAM;
break;
case _MIM:
tempc = MIM;
break;
case _NOON:
tempc = NOON;
break;
case _HE:
case _HE_:
tempc = F_HE;
break;
case _YE:
case _IE:
case _YEE:
if (p_ri) {
inc_cursor();
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = (curc == _YE ? YE_ :
(curc == _IE ? IE_ : YEE_));
} else {
tempc = (curc == _YE ? YE :
(curc == _IE ? IE : YEE));
}
dec_cursor();
} else {
if (curwin->w_cursor.col) {
dec_cursor();
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = (curc == _YE ? YE_ :
(curc == _IE ? IE_ : YEE_));
} else {
tempc = (curc == _YE ? YE :
(curc == _IE ? IE : YEE));
}
inc_cursor();
} else {
tempc = (curc == _YE ? YE :
(curc == _IE ? IE : YEE));
}
}
break;
default:
tempc = 0;
}
if (tempc) {
put_and_redo(tempc);
}
}
/// Change the char. under the cursor to a _X_ or X_ type
static void chg_c_to_X_orX_(void)
{
int tempc;
switch (gchar_cursor()) {
case ALEF:
tempc = ALEF_;
break;
case ALEF_U_H:
tempc = ALEF_U_H_;
break;
case _AYN:
tempc = _AYN_;
break;
case AYN:
tempc = AYN_;
break;
case _GHAYN:
tempc = _GHAYN_;
break;
case GHAYN:
tempc = GHAYN_;
break;
case _HE:
tempc = _HE_;
break;
case YE:
tempc = YE_;
break;
case IE:
tempc = IE_;
break;
case TEE:
tempc = TEE_;
break;
case YEE:
tempc = YEE_;
break;
default:
tempc = 0;
}
if (tempc) {
put_and_redo(tempc);
}
}
/// Change the char. under the cursor to a _X_ or _X type
static void chg_c_to_X_or_X(void)
{
int tempc;
tempc = gchar_cursor();
if (curwin->w_cursor.col + 1 < (colnr_T)STRLEN(get_cursor_line_ptr())) {
inc_cursor();
if ((tempc == F_HE) && (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR))) {
tempc = _HE_;
dec_cursor();
put_and_redo(tempc);
return;
}
dec_cursor();
}
if ((tempc = toF_Xor_X_(tempc)) != 0) {
put_and_redo(tempc);
}
}
/// Change the character left to the cursor to a _X_ or X_ type
static void chg_l_to_X_orX_(void)
{
int tempc;
if ((curwin->w_cursor.col != 0)
&& (curwin->w_cursor.col + 1 == (colnr_T)STRLEN(get_cursor_line_ptr()))) {
return;
}
if (!curwin->w_cursor.col && p_ri) {
return;
}
if (p_ri) {
dec_cursor();
} else {
inc_cursor();
}
switch (gchar_cursor()) {
case ALEF:
tempc = ALEF_;
break;
case ALEF_U_H:
tempc = ALEF_U_H_;
break;
case _AYN:
tempc = _AYN_;
break;
case AYN:
tempc = AYN_;
break;
case _GHAYN:
tempc = _GHAYN_;
break;
case GHAYN:
tempc = GHAYN_;
break;
case _HE:
tempc = _HE_;
break;
case YE:
tempc = YE_;
break;
case IE:
tempc = IE_;
break;
case TEE:
tempc = TEE_;
break;
case YEE:
tempc = YEE_;
break;
default:
tempc = 0;
}
if (tempc) {
put_and_redo(tempc);
}
if (p_ri) {
inc_cursor();
} else {
dec_cursor();
}
}
/// Change the character left to the cursor to a X or _X type
static void chg_l_toXor_X(void)
{
int tempc;
if ((curwin->w_cursor.col != 0) &&
(curwin->w_cursor.col + 1 == (colnr_T)STRLEN(get_cursor_line_ptr()))) {
return;
}
if (!curwin->w_cursor.col && p_ri) {
return;
}
if (p_ri) {
dec_cursor();
} else {
inc_cursor();
}
switch (gchar_cursor()) {
case ALEF_:
tempc = ALEF;
break;
case ALEF_U_H_:
tempc = ALEF_U_H;
break;
case _AYN_:
tempc = _AYN;
break;
case AYN_:
tempc = AYN;
break;
case _GHAYN_:
tempc = _GHAYN;
break;
case GHAYN_:
tempc = GHAYN;
break;
case _HE_:
tempc = _HE;
break;
case YE_:
tempc = YE;
break;
case IE_:
tempc = IE;
break;
case TEE_:
tempc = TEE;
break;
case YEE_:
tempc = YEE;
break;
default:
tempc = 0;
}
if (tempc) {
put_and_redo(tempc);
}
if (p_ri) {
inc_cursor();
} else {
dec_cursor();
}
}
/// Change the character right to the cursor to a _X or _X_ type
static void chg_r_to_Xor_X_(void)
{
int tempc, c;
if (curwin->w_cursor.col) {
if (!p_ri) {
dec_cursor();
}
tempc = gchar_cursor();
if ((c = toF_Xor_X_(tempc)) != 0) {
put_and_redo(c);
}
if (!p_ri) {
inc_cursor();
}
}
}
/// Map Farsi keyboard when in fkmap mode.
int fkmap(int c)
{
int tempc;
static int revins;
if (IS_SPECIAL(c)) {
return c;
}
if (VIM_ISDIGIT(c)
|| (((c == '.')
|| (c == '+')
|| (c == '-')
|| (c == '^')
|| (c == '%')
|| (c == '#')
|| (c == '='))
&& revins)) {
if (!revins) {
if (curwin->w_cursor.col) {
if (!p_ri) {
dec_cursor();
}
chg_c_toX_orX();
chg_l_toXor_X();
if (!p_ri) {
inc_cursor();
}
}
}
arrow_used = TRUE;
(void)stop_arrow();
if (!curwin->w_p_rl && revins) {
inc_cursor();
}
revins++;
p_ri = 1;
} else {
if (revins) {
arrow_used = TRUE;
(void)stop_arrow();
revins = 0;
if (curwin->w_p_rl) {
while ((F_isdigit(gchar_cursor())
|| (gchar_cursor() == F_PERIOD
|| gchar_cursor() == F_PLUS
|| gchar_cursor() == F_MINUS
|| gchar_cursor() == F_MUL
|| gchar_cursor() == F_DIVIDE
|| gchar_cursor() == F_PERCENT
|| gchar_cursor() == F_EQUALS))
&& gchar_cursor() != NUL) {
curwin->w_cursor.col++;
}
} else {
if (curwin->w_cursor.col) {
while ((F_isdigit(gchar_cursor())
|| (gchar_cursor() == F_PERIOD
|| gchar_cursor() == F_PLUS
|| gchar_cursor() == F_MINUS
|| gchar_cursor() == F_MUL
|| gchar_cursor() == F_DIVIDE
|| gchar_cursor() == F_PERCENT
|| gchar_cursor() == F_EQUALS))
&& --curwin->w_cursor.col) {
}
}
if (!F_isdigit(gchar_cursor())) {
++curwin->w_cursor.col;
}
}
}
}
if (!revins) {
if (curwin->w_p_rl) {
p_ri = 0;
}
if (!curwin->w_p_rl) {
p_ri = 1;
}
}
if ((c < 0x100) &&
(isalpha(c) ||
(c == '&') ||
(c == '^') ||
(c == ';') ||
(c == '\'') ||
(c == ',') ||
(c == '[') ||
(c == ']') ||
(c == '{') ||
(c == '}'))) {
chg_r_to_Xor_X_();
}
tempc = 0;
switch (c) {
case '`':
case ' ':
case '.':
case '!':
case '"':
case '$':
case '%':
case '^':
case '&':
case '/':
case '(':
case ')':
case '=':
case '\\':
case '?':
case '+':
case '-':
case '_':
case '*':
case ':':
case '#':
case '~':
case '@':
case '<':
case '>':
case '{':
case '}':
case '|':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'B':
case 'E':
case 'F':
case 'H':
case 'I':
case 'K':
case 'L':
case 'M':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'T':
case 'U':
case 'W':
case 'Y':
case NL:
case TAB:
if (p_ri && (c == NL) && curwin->w_cursor.col) {
// If the char before the cursor is _X_ or X_ do not change
// the one under the cursor with X type.
dec_cursor();
if (F_isalpha(gchar_cursor())) {
inc_cursor();
return NL;
}
inc_cursor();
}
if (!p_ri) {
if (!curwin->w_cursor.col) {
switch (c) {
case '0':
return FARSI_0;
case '1':
return FARSI_1;
case '2':
return FARSI_2;
case '3':
return FARSI_3;
case '4':
return FARSI_4;
case '5':
return FARSI_5;
case '6':
return FARSI_6;
case '7':
return FARSI_7;
case '8':
return FARSI_8;
case '9':
return FARSI_9;
case 'B':
return F_PSP;
case 'E':
return JAZR_N;
case 'F':
return ALEF_D_H;
case 'H':
return ALEF_A;
case 'I':
return TASH;
case 'K':
return F_LQUOT;
case 'L':
return F_RQUOT;
case 'M':
return HAMZE;
case 'O':
return '[';
case 'P':
return ']';
case 'Q':
return OO;
case 'R':
return MAD_N;
case 'T':
return OW;
case 'U':
return MAD;
case 'W':
return OW_OW;
case 'Y':
return JAZR;
case '`':
return F_PCN;
case '!':
return F_EXCL;
case '@':
return F_COMMA;
case '#':
return F_DIVIDE;
case '$':
return F_CURRENCY;
case '%':
return F_PERCENT;
case '^':
return F_MUL;
case '&':
return F_BCOMMA;
case '*':
return F_STAR;
case '(':
return F_LPARENT;
case ')':
return F_RPARENT;
case '-':
return F_MINUS;
case '_':
return F_UNDERLINE;
case '=':
return F_EQUALS;
case '+':
return F_PLUS;
case '\\':
return F_BSLASH;
case '|':
return F_PIPE;
case ':':
return F_DCOLON;
case '"':
return F_SEMICOLON;
case '.':
return F_PERIOD;
case '/':
return F_SLASH;
case '<':
return F_LESS;
case '>':
return F_GREATER;
case '?':
return F_QUESTION;
case ' ':
return F_BLANK;
}
break;
}
}
if (!p_ri) {
dec_cursor();
}
switch ((tempc = gchar_cursor())) {
case _BE:
case _PE:
case _TE:
case _SE:
case _JIM:
case _CHE:
case _HE_J:
case _XE:
case _SIN:
case _SHIN:
case _SAD:
case _ZAD:
case _FE:
case _GHAF:
case _KAF:
case _KAF_H:
case _GAF:
case _LAM:
case _MIM:
case _NOON:
case _HE:
case _HE_:
case _TA:
case _ZA:
put_curr_and_l_to_X(toF_TyA(tempc));
break;
case _AYN:
case _AYN_:
if (!p_ri) {
if (!curwin->w_cursor.col) {
put_curr_and_l_to_X(AYN);
break;
}
}
if (p_ri) {
inc_cursor();
} else {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = AYN_;
} else {
tempc = AYN;
}
if (p_ri) {
dec_cursor();
} else {
inc_cursor();
}
put_curr_and_l_to_X(tempc);
break;
case _GHAYN:
case _GHAYN_:
if (!p_ri) {
if (!curwin->w_cursor.col) {
put_curr_and_l_to_X(GHAYN);
break;
}
}
if (p_ri) {
inc_cursor();
} else {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = GHAYN_;
} else {
tempc = GHAYN;
}
if (p_ri) {
dec_cursor();
} else {
inc_cursor();
}
put_curr_and_l_to_X(tempc);
break;
case _YE:
case _IE:
case _YEE:
if (!p_ri) {
if (!curwin->w_cursor.col) {
put_curr_and_l_to_X((tempc == _YE ? YE :
(tempc == _IE ? IE : YEE)));
break;
}
}
if (p_ri) {
inc_cursor();
} else {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = (tempc == _YE ? YE_ :
(tempc == _IE ? IE_ : YEE_));
} else {
tempc = (tempc == _YE ? YE :
(tempc == _IE ? IE : YEE));
}
if (p_ri) {
dec_cursor();
} else {
inc_cursor();
}
put_curr_and_l_to_X(tempc);
break;
}
if (!p_ri) {
inc_cursor();
}
tempc = 0;
switch (c) {
case '0':
return FARSI_0;
case '1':
return FARSI_1;
case '2':
return FARSI_2;
case '3':
return FARSI_3;
case '4':
return FARSI_4;
case '5':
return FARSI_5;
case '6':
return FARSI_6;
case '7':
return FARSI_7;
case '8':
return FARSI_8;
case '9':
return FARSI_9;
case 'B':
return F_PSP;
case 'E':
return JAZR_N;
case 'F':
return ALEF_D_H;
case 'H':
return ALEF_A;
case 'I':
return TASH;
case 'K':
return F_LQUOT;
case 'L':
return F_RQUOT;
case 'M':
return HAMZE;
case 'O':
return '[';
case 'P':
return ']';
case 'Q':
return OO;
case 'R':
return MAD_N;
case 'T':
return OW;
case 'U':
return MAD;
case 'W':
return OW_OW;
case 'Y':
return JAZR;
case '`':
return F_PCN;
case '!':
return F_EXCL;
case '@':
return F_COMMA;
case '#':
return F_DIVIDE;
case '$':
return F_CURRENCY;
case '%':
return F_PERCENT;
case '^':
return F_MUL;
case '&':
return F_BCOMMA;
case '*':
return F_STAR;
case '(':
return F_LPARENT;
case ')':
return F_RPARENT;
case '-':
return F_MINUS;
case '_':
return F_UNDERLINE;
case '=':
return F_EQUALS;
case '+':
return F_PLUS;
case '\\':
return F_BSLASH;
case '|':
return F_PIPE;
case ':':
return F_DCOLON;
case '"':
return F_SEMICOLON;
case '.':
return F_PERIOD;
case '/':
return F_SLASH;
case '<':
return F_LESS;
case '>':
return F_GREATER;
case '?':
return F_QUESTION;
case ' ':
return F_BLANK;
}
break;
case 'a':
tempc = _SHIN;
break;
case 'A':
tempc = WAW_H;
break;
case 'b':
tempc = ZAL;
break;
case 'c':
tempc = ZE;
break;
case 'C':
tempc = JE;
break;
case 'd':
tempc = _YE;
break;
case 'D':
tempc = _YEE;
break;
case 'e':
tempc = _SE;
break;
case 'f':
tempc = _BE;
break;
case 'g':
tempc = _LAM;
break;
case 'G':
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (gchar_cursor() == _LAM) {
chg_c_toX_orX();
} else if (p_ri) {
chg_c_to_X_or_X();
}
}
if (!p_ri) {
if (!curwin->w_cursor.col) {
return ALEF_U_H;
}
}
if (!p_ri) {
dec_cursor();
}
if (gchar_cursor() == _LAM) {
chg_c_toX_orX();
chg_l_toXor_X();
tempc = ALEF_U_H;
} else if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = ALEF_U_H_;
chg_l_toXor_X();
} else {
tempc = ALEF_U_H;
}
if (!p_ri) {
inc_cursor();
}
return tempc;
case 'h':
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (p_ri) {
chg_c_to_X_or_X();
}
}
if (!p_ri) {
if (!curwin->w_cursor.col) {
return ALEF;
}
}
if (!p_ri) {
dec_cursor();
}
if (gchar_cursor() == _LAM) {
chg_l_toXor_X();
del_char(FALSE);
AppendCharToRedobuff(K_BS);
if (!p_ri) {
dec_cursor();
}
tempc = LA;
} else {
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = ALEF_;
chg_l_toXor_X();
} else {
tempc = ALEF;
}
}
if (!p_ri) {
inc_cursor();
}
return tempc;
case 'i':
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (!p_ri && !F_is_TyE(tempc)) {
chg_c_to_X_orX_();
}
if (p_ri) {
chg_c_to_X_or_X();
}
}
if (!p_ri && !curwin->w_cursor.col) {
return _HE;
}
if (!p_ri) {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = _HE_;
} else {
tempc = _HE;
}
if (!p_ri) {
inc_cursor();
}
break;
case 'j':
tempc = _TE;
break;
case 'J':
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (p_ri) {
chg_c_to_X_or_X();
}
}
if (!p_ri) {
if (!curwin->w_cursor.col) {
return TEE;
}
}
if (!p_ri) {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = TEE_;
chg_l_toXor_X();
} else {
tempc = TEE;
}
if (!p_ri) {
inc_cursor();
}
return tempc;
case 'k':
tempc = _NOON;
break;
case 'l':
tempc = _MIM;
break;
case 'm':
tempc = _PE;
break;
case 'n':
case 'N':
tempc = DAL;
break;
case 'o':
tempc = _XE;
break;
case 'p':
tempc = _HE_J;
break;
case 'q':
tempc = _ZAD;
break;
case 'r':
tempc = _GHAF;
break;
case 's':
tempc = _SIN;
break;
case 'S':
tempc = _IE;
break;
case 't':
tempc = _FE;
break;
case 'u':
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (!p_ri && !F_is_TyE(tempc)) {
chg_c_to_X_orX_();
}
if (p_ri) {
chg_c_to_X_or_X();
}
}
if (!p_ri && !curwin->w_cursor.col) {
return _AYN;
}
if (!p_ri) {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = _AYN_;
} else {
tempc = _AYN;
}
if (!p_ri) {
inc_cursor();
}
break;
case 'v':
case 'V':
tempc = RE;
break;
case 'w':
tempc = _SAD;
break;
case 'x':
case 'X':
tempc = _TA;
break;
case 'y':
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (!p_ri && !F_is_TyE(tempc)) {
chg_c_to_X_orX_();
}
if (p_ri) {
chg_c_to_X_or_X();
}
}
if (!p_ri && !curwin->w_cursor.col) {
return _GHAYN;
}
if (!p_ri) {
dec_cursor();
}
if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR)) {
tempc = _GHAYN_;
} else {
tempc = _GHAYN;
}
if (!p_ri) {
inc_cursor();
}
break;
case 'z':
tempc = _ZA;
break;
case 'Z':
tempc = _KAF_H;
break;
case ';':
tempc = _KAF;
break;
case '\'':
tempc = _GAF;
break;
case ',':
tempc = WAW;
break;
case '[':
tempc = _JIM;
break;
case ']':
tempc = _CHE;
break;
}
if ((F_isalpha(tempc) || F_isdigit(tempc))) {
if (!curwin->w_cursor.col && STRLEN(get_cursor_line_ptr())) {
if (!p_ri && !F_is_TyE(tempc)) {
chg_c_to_X_orX_();
}
if (p_ri) {
chg_c_to_X_or_X();
}
}
if (curwin->w_cursor.col) {
if (!p_ri) {
dec_cursor();
}
if (F_is_TyE(tempc)) {
chg_l_toXor_X();
} else {
chg_l_to_X_orX_();
}
if (!p_ri) {
inc_cursor();
}
}
}
if (tempc) {
return tempc;
}
return c;
}
/// Convert a none leading Farsi char into a leading type.
///
/// @param c The character to convert.
///
/// @return The non-leading Farsi character converted to a leading type.
static int toF_leading(int c)
{
switch (c) {
case ALEF_:
return ALEF;
case ALEF_U_H_:
return ALEF_U_H;
case BE:
return _BE;
case PE:
return _PE;
case TE:
return _TE;
case SE:
return _SE;
case JIM:
return _JIM;
case CHE:
return _CHE;
case HE_J:
return _HE_J;
case XE:
return _XE;
case SIN:
return _SIN;
case SHIN:
return _SHIN;
case SAD:
return _SAD;
case ZAD:
return _ZAD;
case AYN:
case AYN_:
case _AYN_:
return _AYN;
case GHAYN:
case GHAYN_:
case _GHAYN_:
return _GHAYN;
case FE:
return _FE;
case GHAF:
return _GHAF;
case KAF:
return _KAF;
case GAF:
return _GAF;
case LAM:
return _LAM;
case MIM:
return _MIM;
case NOON:
return _NOON;
case _HE_:
case F_HE:
return _HE;
case YE:
case YE_:
return _YE;
case IE_:
case IE:
return _IE;
case YEE:
case YEE_:
return _YEE;
}
return c;
}
/// Convert a given Farsi char into right joining type.
///
/// @param c The character to convert.
///
/// @return The Farsi character converted into a right joining type
static int toF_Rjoin(int c)
{
switch (c) {
case ALEF:
return ALEF_;
case ALEF_U_H:
return ALEF_U_H_;
case BE:
return _BE;
case PE:
return _PE;
case TE:
return _TE;
case SE:
return _SE;
case JIM:
return _JIM;
case CHE:
return _CHE;
case HE_J:
return _HE_J;
case XE:
return _XE;
case SIN:
return _SIN;
case SHIN:
return _SHIN;
case SAD:
return _SAD;
case ZAD:
return _ZAD;
case AYN:
case AYN_:
case _AYN:
return _AYN_;
case GHAYN:
case GHAYN_:
case _GHAYN_:
return _GHAYN_;
case FE:
return _FE;
case GHAF:
return _GHAF;
case KAF:
return _KAF;
case GAF:
return _GAF;
case LAM:
return _LAM;
case MIM:
return _MIM;
case NOON:
return _NOON;
case _HE:
case F_HE:
return _HE_;
case YE:
case YE_:
return _YE;
case IE_:
case IE:
return _IE;
case TEE:
return TEE_;
case YEE:
case YEE_:
return _YEE;
}
return c;
}
/// Can a given Farsi character join via its left edj.
///
/// @param c The character to check.
///
/// @return true if the character can join via its left edj.
static bool canF_Ljoin(int c)
{
switch (c) {
case _BE:
case BE:
case PE:
case _PE:
case TE:
case _TE:
case SE:
case _SE:
case JIM:
case _JIM:
case CHE:
case _CHE:
case HE_J:
case _HE_J:
case XE:
case _XE:
case SIN:
case _SIN:
case SHIN:
case _SHIN:
case SAD:
case _SAD:
case ZAD:
case _ZAD:
case _TA:
case _ZA:
case AYN:
case _AYN:
case _AYN_:
case AYN_:
case GHAYN:
case GHAYN_:
case _GHAYN_:
case _GHAYN:
case FE:
case _FE:
case GHAF:
case _GHAF:
case _KAF_H:
case KAF:
case _KAF:
case GAF:
case _GAF:
case LAM:
case _LAM:
case MIM:
case _MIM:
case NOON:
case _NOON:
case IE:
case _IE:
case IE_:
case YE:
case _YE:
case YE_:
case YEE:
case _YEE:
case YEE_:
case F_HE:
case _HE:
case _HE_:
return true;
}
return false;
}
/// Can a given Farsi character join via its right edj.
///
/// @param c
///
/// @return true if the character can join via its right edj.
static bool canF_Rjoin(int c)
{
switch (c) {
case ALEF:
case ALEF_:
case ALEF_U_H:
case ALEF_U_H_:
case DAL:
case ZAL:
case RE:
case JE:
case ZE:
case TEE:
case TEE_:
case WAW:
case WAW_H:
return true;
}
return canF_Ljoin(c);
}
/// Is a given Farsi character a terminating type.
///
/// @param c
///
/// @return true if the character is a terminating type.
static bool F_isterm(int c)
{
switch (c) {
case ALEF:
case ALEF_:
case ALEF_U_H:
case ALEF_U_H_:
case DAL:
case ZAL:
case RE:
case JE:
case ZE:
case WAW:
case WAW_H:
case TEE:
case TEE_:
return true;
}
return false;
}
/// Convert the given Farsi character into an ending type.
///
/// @param c The character to convert.
///
/// @return The character converted into an ending type.
static int toF_ending(int c)
{
switch (c) {
case _BE:
return BE;
case _PE:
return PE;
case _TE:
return TE;
case _SE:
return SE;
case _JIM:
return JIM;
case _CHE:
return CHE;
case _HE_J:
return HE_J;
case _XE:
return XE;
case _SIN:
return SIN;
case _SHIN:
return SHIN;
case _SAD:
return SAD;
case _ZAD:
return ZAD;
case _AYN:
return AYN;
case _AYN_:
return AYN_;
case _GHAYN:
return GHAYN;
case _GHAYN_:
return GHAYN_;
case _FE:
return FE;
case _GHAF:
return GHAF;
case _KAF_H:
case _KAF:
return KAF;
case _GAF:
return GAF;
case _LAM:
return LAM;
case _MIM:
return MIM;
case _NOON:
return NOON;
case _YE:
return YE_;
case YE_:
return YE;
case _YEE:
return YEE_;
case YEE_:
return YEE;
case TEE:
return TEE_;
case _IE:
return IE_;
case IE_:
return IE;
case _HE:
case _HE_:
return F_HE;
}
return c;
}
/// Convert the Farsi 3342 standard into Farsi VIM.
void conv_to_pvim(void)
{
char_u *ptr;
int lnum, llen, i;
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) {
ptr = ml_get((linenr_T)lnum);
llen = (int)STRLEN(ptr);
for (i = 0; i < llen - 1; i++) {
if (canF_Ljoin(ptr[i]) && canF_Rjoin(ptr[i + 1])) {
ptr[i] = toF_leading(ptr[i]);
i++;
while (canF_Rjoin(ptr[i]) && i < llen) {
ptr[i] = toF_Rjoin(ptr[i]);
if (F_isterm(ptr[i]) || !F_isalpha(ptr[i])) {
break;
}
i++;
}
if (!F_isalpha(ptr[i]) || !canF_Rjoin(ptr[i])) {
ptr[i - 1] = toF_ending(ptr[i - 1]);
}
} else {
ptr[i] = toF_TyA(ptr[i]);
}
}
}
// Following lines contains Farsi encoded character.
do_cmdline_cmd((char_u *)"%s/\202\231/\232/g");
do_cmdline_cmd((char_u *)"%s/\201\231/\370\334/g");
// Assume the screen has been messed up: clear it and redraw.
redraw_later(CLEAR);
MSG_ATTR(farsi_text_1, hl_attr(HLF_S));
}
/// Convert the Farsi VIM into Farsi 3342 standard.
void conv_to_pstd(void)
{
char_u *ptr;
int lnum, llen, i;
// Following line contains Farsi encoded character.
do_cmdline_cmd((char_u *)"%s/\232/\202\231/g");
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) {
ptr = ml_get((linenr_T)lnum);
llen = (int)STRLEN(ptr);
for (i = 0; i < llen; i++) {
ptr[i] = toF_TyA(ptr[i]);
}
}
// Assume the screen has been messed up: clear it and redraw.
redraw_later(CLEAR);
MSG_ATTR(farsi_text_2, hl_attr(HLF_S));
}
/// left-right swap the characters in buf[len].
///
/// @param buf
/// @param len
static void lrswapbuf(char_u *buf, int len)
{
char_u *s, *e;
int c;
s = buf;
e = buf + len - 1;
while (e > s) {
c = *s;
*s = *e;
*e = c;
++s;
--e;
}
}
/// swap all the characters in reverse direction
///
/// @param ibuf
///
/// @return The buffer with the characters swapped.
char_u* lrswap(char_u *ibuf)
{
if ((ibuf != NULL) && (*ibuf != NUL)) {
lrswapbuf(ibuf, (int)STRLEN(ibuf));
}
return ibuf;
}
/// swap all the Farsi characters in reverse direction
///
/// @param cmdbuf
/// @param .
///
/// @return The buffer with all Farsi characters swapped.
char_u* lrFswap(char_u *cmdbuf, int len)
{
int i, cnt;
if (cmdbuf == NULL) {
return cmdbuf;
}
if ((len == 0) && ((len = (int)STRLEN(cmdbuf)) == 0)) {
return cmdbuf;
}
for (i = 0; i < len; i++) {
for (cnt = 0; i + cnt < len
&& (F_isalpha(cmdbuf[i + cnt])
|| F_isdigit(cmdbuf[i + cnt])
|| cmdbuf[i + cnt] == ' '); ++cnt) {
}
lrswapbuf(cmdbuf + i, cnt);
i += cnt;
}
return cmdbuf;
}
/// Reverse the characters in the search path and substitute section
/// accordingly.
/// TODO: handle different separator characters. Use skip_regexp().
///
/// @param ibuf
///
/// @return The buffer with the characters in the search path and substitute
/// section reversed.
char_u* lrF_sub(char_u *ibuf)
{
char_u *p, *ep;
int i, cnt;
p = ibuf;
// Find the boundary of the search path
while (((p = vim_strchr(p + 1, '/')) != NULL) && p[-1] == '\\') {
}
if (p == NULL) {
return ibuf;
}
// Reverse the Farsi characters in the search path.
lrFswap(ibuf, (int)(p - ibuf));
// Now find the boundary of the substitute section
if ((ep = (char_u *)strrchr((char *)++p, '/')) != NULL) {
cnt = (int)(ep - p);
} else {
cnt = (int)STRLEN(p);
}
// Reverse the characters in the substitute section and take care of '\'
for (i = 0; i < cnt - 1; i++) {
if (p[i] == '\\') {
p[i] = p[i + 1];
p[++i] = '\\';
}
}
lrswapbuf(p, cnt);
return ibuf;
}
/// Map Farsi keyboard when in cmd_fkmap mode.
///
/// @param c
///
/// @return The mapped character.
int cmdl_fkmap(int c)
{
int tempc;
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '`':
case ' ':
case '.':
case '!':
case '"':
case '$':
case '%':
case '^':
case '&':
case '/':
case '(':
case ')':
case '=':
case '\\':
case '?':
case '+':
case '-':
case '_':
case '*':
case ':':
case '#':
case '~':
case '@':
case '<':
case '>':
case '{':
case '}':
case '|':
case 'B':
case 'E':
case 'F':
case 'H':
case 'I':
case 'K':
case 'L':
case 'M':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'T':
case 'U':
case 'W':
case 'Y':
case NL:
case TAB:
switch ((tempc = cmd_gchar(AT_CURSOR))) {
case _BE:
case _PE:
case _TE:
case _SE:
case _JIM:
case _CHE:
case _HE_J:
case _XE:
case _SIN:
case _SHIN:
case _SAD:
case _ZAD:
case _AYN:
case _GHAYN:
case _FE:
case _GHAF:
case _KAF:
case _GAF:
case _LAM:
case _MIM:
case _NOON:
case _HE:
case _HE_:
cmd_pchar(toF_TyA(tempc), AT_CURSOR);
break;
case _AYN_:
cmd_pchar(AYN_, AT_CURSOR);
break;
case _GHAYN_:
cmd_pchar(GHAYN_, AT_CURSOR);
break;
case _IE:
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR + 1)) {
cmd_pchar(IE_, AT_CURSOR);
} else {
cmd_pchar(IE, AT_CURSOR);
}
break;
case _YEE:
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR + 1)) {
cmd_pchar(YEE_, AT_CURSOR);
} else {
cmd_pchar(YEE, AT_CURSOR);
}
break;
case _YE:
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR + 1)) {
cmd_pchar(YE_, AT_CURSOR);
} else {
cmd_pchar(YE, AT_CURSOR);
}
}
switch (c) {
case '0':
return FARSI_0;
case '1':
return FARSI_1;
case '2':
return FARSI_2;
case '3':
return FARSI_3;
case '4':
return FARSI_4;
case '5':
return FARSI_5;
case '6':
return FARSI_6;
case '7':
return FARSI_7;
case '8':
return FARSI_8;
case '9':
return FARSI_9;
case 'B':
return F_PSP;
case 'E':
return JAZR_N;
case 'F':
return ALEF_D_H;
case 'H':
return ALEF_A;
case 'I':
return TASH;
case 'K':
return F_LQUOT;
case 'L':
return F_RQUOT;
case 'M':
return HAMZE;
case 'O':
return '[';
case 'P':
return ']';
case 'Q':
return OO;
case 'R':
return MAD_N;
case 'T':
return OW;
case 'U':
return MAD;
case 'W':
return OW_OW;
case 'Y':
return JAZR;
case '`':
return F_PCN;
case '!':
return F_EXCL;
case '@':
return F_COMMA;
case '#':
return F_DIVIDE;
case '$':
return F_CURRENCY;
case '%':
return F_PERCENT;
case '^':
return F_MUL;
case '&':
return F_BCOMMA;
case '*':
return F_STAR;
case '(':
return F_LPARENT;
case ')':
return F_RPARENT;
case '-':
return F_MINUS;
case '_':
return F_UNDERLINE;
case '=':
return F_EQUALS;
case '+':
return F_PLUS;
case '\\':
return F_BSLASH;
case '|':
return F_PIPE;
case ':':
return F_DCOLON;
case '"':
return F_SEMICOLON;
case '.':
return F_PERIOD;
case '/':
return F_SLASH;
case '<':
return F_LESS;
case '>':
return F_GREATER;
case '?':
return F_QUESTION;
case ' ':
return F_BLANK;
}
break;
case 'a':
return _SHIN;
case 'A':
return WAW_H;
case 'b':
return ZAL;
case 'c':
return ZE;
case 'C':
return JE;
case 'd':
return _YE;
case 'D':
return _YEE;
case 'e':
return _SE;
case 'f':
return _BE;
case 'g':
return _LAM;
case 'G':
if (cmd_gchar(AT_CURSOR) == _LAM) {
cmd_pchar(LAM, AT_CURSOR);
return ALEF_U_H;
}
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR)) {
return ALEF_U_H_;
} else {
return ALEF_U_H;
}
case 'h':
if (cmd_gchar(AT_CURSOR) == _LAM) {
cmd_pchar(LA, AT_CURSOR);
redrawcmdline();
return K_IGNORE;
}
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR)) {
return ALEF_;
} else {
return ALEF;
}
case 'i':
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR)) {
return _HE_;
} else {
return _HE;
}
case 'j':
return _TE;
case 'J':
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR)) {
return TEE_;
} else {
return TEE;
}
case 'k':
return _NOON;
case 'l':
return _MIM;
case 'm':
return _PE;
case 'n':
case 'N':
return DAL;
case 'o':
return _XE;
case 'p':
return _HE_J;
case 'q':
return _ZAD;
case 'r':
return _GHAF;
case 's':
return _SIN;
case 'S':
return _IE;
case 't':
return _FE;
case 'u':
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR)) {
return _AYN_;
} else {
return _AYN;
}
case 'v':
case 'V':
return RE;
case 'w':
return _SAD;
case 'x':
case 'X':
return _TA;
case 'y':
if (F_is_TyB_TyC_TyD(SRC_CMD, AT_CURSOR)) {
return _GHAYN_;
} else {
return _GHAYN;
}
case 'z':
case 'Z':
return _ZA;
case ';':
return _KAF;
case '\'':
return _GAF;
case ',':
return WAW;
case '[':
return _JIM;
case ']':
return _CHE;
}
return c;
}
/// F_isalpha returns true if 'c' is in the Farsi alphabet.
///
/// @param c The character to check.
///
/// @return true if 'c' is a Farsi alphabet character.
bool F_isalpha(int c)
{
return (c >= TEE_ && c <= _YE)
|| (c >= ALEF_A && c <= YE)
|| (c >= _IE && c <= YE_);
}
/// F_isdigit returns true if 'c' is a Farsi digit
///
/// @param c The character to check.
///
/// @return true if 'c' is a Farsi digit.
bool F_isdigit(int c)
{
return c >= FARSI_0 && c <= FARSI_9;
}
/// F_ischar returns true if 'c' is a Farsi character.
///
/// @param c The character to check.
///
/// @return true if 'c' is a Farsi character.
bool F_ischar(int c)
{
return c >= TEE_ && c <= YE_;
}
void farsi_fkey(cmdarg_T *cap)
{
int c = cap->cmdchar;
if (c == K_F8) {
if (p_altkeymap) {
if (curwin->w_farsi & W_R_L) {
p_fkmap = 0;
do_cmdline_cmd((char_u *)"set norl");
MSG("");
} else {
p_fkmap = 1;
do_cmdline_cmd((char_u *)"set rl");
MSG("");
}
curwin->w_farsi = curwin->w_farsi ^ W_R_L;
}
}
if (c == K_F9) {
if (p_altkeymap && curwin->w_p_rl) {
curwin->w_farsi = curwin->w_farsi ^ W_CONV;
if (curwin->w_farsi & W_CONV) {
conv_to_pvim();
} else {
conv_to_pstd();
}
}
}
}
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