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/* -*- mode: C; mode: fold; -*- */
/* Copyright (c) 1992, 1998, 2000, 2002, 2003, 2004, 2005, 2006 John E. Davis
* This file is part of JED editor library source.
*
* You may distribute this file under the terms the GNU General Public
* License. See the file COPYING for more information.
*/
#include "config.h"
#include "jed-feat.h"
/*{{{ Include Files */
#include <stdio.h>
#include <slang.h>
#include "jdmacros.h"
#include <string.h>
#include <setjmp.h>
#include <stdarg.h>
#include "buffer.h"
#include "screen.h"
#include "window.h"
#include "display.h"
#include "sysdep.h"
#include "file.h"
#include "keymap.h"
#include "ledit.h"
#include "misc.h"
#include "ins.h"
#include "paste.h"
/*}}}*/
/*{{{ Global Variables */
/* Do not malloc these without changing occurances of sizeof() first */
char Error_Buffer[256];
int Exit_From_MiniBuffer;
static unsigned char Macro_Buffer[JED_KBD_MACRO_SIZE];
unsigned char *Macro_Buffer_Ptr = Macro_Buffer;
static unsigned char *Macro_Ptr_Max = Macro_Buffer;
int Defining_Keyboard_Macro = 0;
int Executing_Keyboard_Macro = 0;
MiniInfo_Type Mini_Info;
/*}}}*/
typedef struct /*{{{*/
{
jmp_buf b;
}
/*}}}*/
jmp_buf_struct;
extern jmp_buf_struct Jump_Buffer, *Jump_Buffer_Ptr;
static struct /*{{{*/
{
int def;
int exe;
}
/*}}}*/
Macro_State;
static void macro_store_key(char ch) /*{{{*/
{
/* I need to put something here to increase the size of the Macro_Buffer
in case of overflow */
if (Macro_Buffer_Ptr - Macro_Buffer >= JED_KBD_MACRO_SIZE) msg_error("Macro Size exceeded.");
else *Macro_Buffer_Ptr++ = ch;
}
/*}}}*/
static void restore_macro_state(void) /*{{{*/
{
Defining_Keyboard_Macro = Macro_State.def;
Executing_Keyboard_Macro = Macro_State.exe;
}
/*}}}*/
static void set_macro_state(void) /*{{{*/
{
Macro_State.def = Defining_Keyboard_Macro;
Macro_State.exe = Executing_Keyboard_Macro;
}
/*}}}*/
void jed_abort_keyboard_macro (void)
{
Defining_Keyboard_Macro = Executing_Keyboard_Macro = 0;
set_macro_state();
}
/* if not in the mini buffer and if during keyboard macro, allow user to enter
different text each time macro is executed */
int macro_query() /*{{{*/
{
char *s;
int n;
/* macro state is already set */
Defining_Keyboard_Macro = 0;
Executing_Keyboard_Macro = 0;
if (!IN_MINI_WINDOW)
{
if (NULL == (s = read_from_minibuffer("Enter String:", (char *) NULL, NULL, &n))) return(0);
(void) jed_insert_nbytes ((unsigned char *) s, n);
SLfree(s);
}
/* exit from mini restores the state */
return(1);
}
/*}}}*/
int jed_check_string_key_buffer (void)
{
int ch, ch1;
if (Read_This_Character == NULL)
return -1;
ch = *Read_This_Character++;
if (ch == 0)
{
Read_This_Character = NULL;
return -1;
}
if ((ch1 = *Read_This_Character) == 0)
{
Read_This_Character = NULL;
return ch;
}
if (ch == '^')
{
if (ch1 == '?') ch = 127;
else ch = ch1 - '@';
Read_This_Character++;
}
else if (ch == '\\')
{
ch = ch1;
Read_This_Character++;
}
if (*Read_This_Character == 0) Read_This_Character = NULL;
return ch;
}
int jed_getkey (void) /*{{{*/
{
int ch, diff;
static int mini_flag = 0;
int *srf;
ch = jed_check_string_key_buffer ();
if (ch != -1)
return ch;
if (Executing_Keyboard_Macro)
{
if (Macro_Buffer_Ptr < Macro_Ptr_Max) return (*Macro_Buffer_Ptr++);
Executing_Keyboard_Macro = 0;
#if JED_HAS_MENUS
/* This means that the macro was stopped from a menu */
if (Jed_Menus_Active)
(void) jed_exit_menu_bar ();
#endif
update((Line *) NULL, 0, 0, 1);
}
diff = (int) (Key_Bufferp - Key_Buffer);
if ((SLang_get_error () == 0)
&& SLang_Key_TimeOut_Flag
&& ((mini_flag && (diff > 0))
|| !input_pending(&Number_Ten)))
{
message(Key_Buffer);
safe_strcat(Message_Buffer, "-", sizeof(Message_Buffer));
/* This ensures that the update is performed if we are echoing from
* digit argument */
srf = Repeat_Factor; Repeat_Factor = NULL;
update((Line *)NULL, 0, 0, 1);
Repeat_Factor = srf;
clear_message ();
mini_flag = 1;
}
else (mini_flag = 0);
ch = my_getkey();
if (diff < SLANG_MAX_KEYMAP_KEY_SEQ)
{
*Key_Bufferp++ = (char) ch;
*Key_Bufferp = 0;
}
else
{
/* msg_error("KeyBuffer overflow!"); */
Key_Bufferp = Key_Buffer;
}
if (Defining_Keyboard_Macro)
{
/* starting a new keysequence to save this point */
if (diff == 0)
{
Macro_Ptr_Max = Macro_Buffer_Ptr;
}
macro_store_key(ch);
}
return(ch);
}
/*}}}*/
void jed_error_hook (SLFUTURE_CONST char *msg)
{
if ((JWindow == NULL) || Batch)
fprintf(stderr, "%s\r\n", msg);
else
JWindow->trashed = 1;
if (Error_Buffer[0] == 0)
safe_strcpy(Error_Buffer, msg, sizeof (Error_Buffer));
}
void msg_error(char *msg) /*{{{*/
{
#if 0
Defining_Keyboard_Macro = Executing_Keyboard_Macro = 0;
Read_This_Character = NULL;
Repeat_Factor = NULL;
set_macro_state();
#endif
SLang_verror (SL_INTRINSIC_ERROR, "%s", msg);
}
/*}}}*/
/* read from minibuffer using prompt providing a default, and stuffing
the minibuffer with init if necessary */
/* I should make recursive mini buffers */
static char *read_from_minibuffer_1 (char *prompt, char *deflt, char *what, int *n) /*{{{*/
{
char buf[JED_MAX_PATH_LEN];
jmp_buf_struct *mini_jmp_save, mini_jmp_buf;
unsigned char *ps;
unsigned char *p, ch;
static Window_Type *current_window;
/* may get changed if user leaves minibuffer and returns from other
* window which means that the new window becomes target
* of minibuffer action
*/
Window_Type *w;
char *ret;
int len;
Buffer *start_buffer;
if (Batch)
{
if (prompt != NULL)
fputs (prompt, stdout);
if ((deflt != NULL) && (*deflt != 0))
fprintf (stdout, "(default %s)", deflt);
fflush (stdout);
*n = 0;
if (NULL == fgets (buf, sizeof(buf), stdin))
{
SLang_verror (SL_Read_Error, "Read from stdin failed");
return NULL;
}
if (NULL == (ret = SLmake_string (buf)))
return NULL;
len = strlen (ret);
if (len && (ret[len-1] == '\n'))
{
len--;
ret[len] = 0;
}
*n = (int) len;
return ret;
}
if (!IN_MINI_WINDOW)
{
current_window = JWindow;
start_buffer = CBuf;
}
else
{
current_window = NULL;
start_buffer = NULL;
}
if (select_minibuffer()) return(NULL); /* we should be on a new line of mini buffer */
ps = Mini_Info.prompt;
p = (unsigned char *) prompt;
len = 0;
if (p != NULL)
{
while (0 != (ch = *p++))
{
*ps++ = ch;
len++;
}
*ps++ = ' ';
len++;
}
if ((deflt != NULL) && (*deflt != 0))
{
SLsnprintf (buf, sizeof (buf), "(default: %s) ", deflt);
p = (unsigned char *) buf;
while (0 != (ch = *p++))
{
*ps++ = ch;
len++;
}
}
*ps = 0;
Mini_Info.prompt_len = len;
Mini_Info.effective_prompt_len = jed_compute_effective_length (Mini_Info.prompt, Mini_Info.prompt + len);
touch_window();
if (what != NULL) jed_insert_string(what);
update((Line *) NULL, 0, 0, 1);
mini_jmp_save = Jump_Buffer_Ptr;
Jump_Buffer_Ptr = &mini_jmp_buf;
if (setjmp(mini_jmp_buf.b) != 0)
{
/* Do not call the restart function from here, in case this function
* has been called from the interpreter.
*/
/* SLang_restart(1); */
update((Line *) NULL, 0, 0, 1);
}
while(!Exit_From_MiniBuffer)
{
int err = 0;
do_jed();
err = SLang_get_error ();
if (((err == SL_USER_BREAK) || SLKeyBoard_Quit)
&& IN_MINI_WINDOW)
break;
update((Line *) NULL, 0, 0, 1);
if (err)
{
SLang_restart (0);
SLang_set_error (0);
SLKeyBoard_Quit = 0;
}
}
if (Exit_From_MiniBuffer && !Executing_Keyboard_Macro
&& (Repeat_Factor == NULL) && !JWindow->trashed && !input_pending(&Number_Zero))
{
SLsmg_gotorc (Jed_Num_Screen_Rows - 1, 0);
SLsmg_refresh ();
}
Jump_Buffer_Ptr = mini_jmp_save;
exit_minibuffer (); /* be graceful */
Exit_From_MiniBuffer = 0;
MiniBuffer_Active = 0;
restore_macro_state();
if (!SLKeyBoard_Quit)
{
if (CLine->len == 0)
{
if (deflt != NULL) jed_insert_string(deflt);
}
bob();
jed_push_mark();
eob();
ret = make_buffer_substring(n);
}
else
{
SLKeyBoard_Quit = 0;
ret = NULL;
}
/* we should be in minibuffer so delete marks and spots */
while (CBuf->spots) pop_spot();
while (CBuf->marks) jed_pop_mark(0);
erase_buffer();
/* Remove MiniWindow from the ring */
w = JWindow;
while (w->next != JWindow) w = w->next;
other_window();
w->next = JWindow;
if (current_window != NULL)
{
/* Note that by this time, current_window might not exist. */
while((JWindow != current_window) && (JWindow != w))
other_window();
}
if ((start_buffer != NULL)
&& (buffer_exists (start_buffer)))
switch_to_buffer (start_buffer);
JWindow->trashed = 1;
/* delete_buffer(MiniBuffer); */
MiniBuffer = NULL;
#if JED_HAS_MENUS
jed_notify_menu_buffer_changed ();
#endif
return(ret);
}
/*}}}*/
char *read_from_minibuffer (char *prompt, char *deflt, char *what, int *n)
{
int *rf = Repeat_Factor;
int repeat = 0;
char *s;
if (rf != NULL)
repeat = *rf;
s = read_from_minibuffer_1 (prompt, deflt, what, n);
if (rf != NULL)
{
Repeat_Factor = rf;
*rf = repeat;
}
return s;
}
static int Macro_Illegal_Now = 0;
static int check_macro_legality(void) /*{{{*/
{
if (Macro_Illegal_Now)
{
msg_error("Illegal context for Macro definition.");
return (0);
}
return (1);
}
/*}}}*/
int begin_keyboard_macro() /*{{{*/
{
if (!check_macro_legality()) return (0);
Macro_Buffer_Ptr = Macro_Buffer;
message("Defining Macro.");
Defining_Keyboard_Macro = 1;
set_macro_state();
return(1);
}
/*}}}*/
int end_keyboard_macro() /*{{{*/
{
if (Defining_Keyboard_Macro) message("Macro Defined.");
else
{
if (!Executing_Keyboard_Macro) msg_error("Not defining Macro!");
Executing_Keyboard_Macro = 0;
return(1);
}
/* Macro_Ptr_Max = Macro_Buffer_Ptr; */
Defining_Keyboard_Macro = 0;
set_macro_state();
return(1);
}
/*}}}*/
int execute_keyboard_macro() /*{{{*/
{
int repeat = 0, *repeat_ptr;
if (!check_macro_legality()) return (0);
if (Defining_Keyboard_Macro)
{
msg_error("Can't execute a macro while defining one.");
return(0);
}
Executing_Keyboard_Macro = 1;
set_macro_state();
Macro_Buffer_Ptr = Macro_Buffer;
/* save the repeat context */
repeat_ptr = Repeat_Factor;
if (repeat_ptr != NULL) repeat = *repeat_ptr;
JWindow->trashed = 1;
Macro_Illegal_Now = 1;
while ((Macro_Buffer_Ptr < Macro_Ptr_Max)
&& Executing_Keyboard_Macro) /* since we might enter minibuffer
and stop macro before returning
here */
{
Repeat_Factor = NULL;
/* ch = *Macro_Buffer_Ptr++; */
(void) jed_do_key();
if (SLKeyBoard_Quit || (*Error_Buffer)) break;
}
Macro_Illegal_Now = 0;
/* restore context */
Repeat_Factor = repeat_ptr;
if (repeat_ptr != NULL) *repeat_ptr = repeat;
Executing_Keyboard_Macro = 0;
#if JED_HAS_MENUS
/* This means that the macro was stopped from a menu */
if (Jed_Menus_Active)
(void) jed_exit_menu_bar ();
#endif
set_macro_state();
return(1);
}
/*}}}*/
void get_last_macro () /*{{{*/
{
unsigned char *m, *s;
unsigned char buf[2 * JED_KBD_MACRO_SIZE + 1];
if (Defining_Keyboard_Macro)
{
msg_error("Complete Macro first!");
return;
}
m = Macro_Buffer;
if (m == Macro_Ptr_Max)
{
msg_error("Macro not defined.");
return;
}
s = buf;
while (m < Macro_Ptr_Max)
{
unsigned char ch = *m++;
if ((ch < ' ') || (ch == 127))
{
*s++ = '^';
if (ch == 127) ch = '?'; else ch = '@' + ch;
}
else if ((ch == '^') || (ch == '\\'))
{
*s++ = '\\';
}
*s++ = (char)ch;
}
*s = 0;
SLang_push_string ((char *)buf);
}
/*}}}*/
char *safe_strcpy (char *a, SLFUTURE_CONST char *b, unsigned int n) /*{{{*/
{
if (n != 0)
{
n--;
strncpy (a, b, n);
a[n] = 0;
}
return a;
}
/*}}}*/
char *safe_strcat (char *a, SLFUTURE_CONST char *b, unsigned int n) /*{{{*/
{
unsigned int len = strlen (a);
unsigned int max;
n--;
if (n > len)
{
max = n - len;
strncpy (a + len, b, max);
a[n] = 0;
}
return a;
}
/*}}}*/
void jed_vmessage (int now, char *fmt, ...)
{
va_list ap;
char buf[2048];
va_start (ap, fmt);
SLvsnprintf (buf, sizeof (buf), fmt, ap);
va_end (ap);
if (now) flush_message (buf);
else message (buf);
}
void jed_verror (char *fmt, ...)
{
va_list ap;
char buf[2048];
va_start (ap, fmt);
SLvsnprintf (buf, sizeof (buf), fmt, ap);
va_end (ap);
msg_error (buf);
}
/* Since the interpreter deals mainly with hashed strings, and there is
* the possibility that the strings to be compared are the same, we
* will exploit this fact.
*/
int jed_case_strncmp (char *a, char *b, unsigned int n)
{
register unsigned char cha, chb;
char *bmax;
if (a == b) return 0;
bmax = b + n;
while (b < bmax)
{
cha = UPPER_CASE(*a);
chb = UPPER_CASE(*b);
if (cha != chb)
return (int) cha - (int) chb;
if (chb == 0) return 0;
a++;
b++;
}
return 0;
}
int jed_case_strcmp (char *a, char *b)
{
register unsigned char cha, chb;
if (a == b) return 0;
while (1)
{
cha = UPPER_CASE(*a);
chb = UPPER_CASE(*b);
if (cha != chb)
return (int) cha - (int) chb;
if (chb == 0) return 0;
a++;
b++;
}
}
char *jed_malloc0 (unsigned int len)
{
char *s = SLmalloc (len);
if (s != NULL)
memset ((char *) s, 0, len);
return s;
}
Buffer *jed_get_mini_action_buffer (void)
{
Window_Type *w;
if (IN_MINI_WINDOW == 0)
return NULL;
w = Mini_Info.action_window;
if (w != NULL)
{
Buffer *b = w->buffer;
if (buffer_exists (b))
return b;
}
return NULL;
}
/* Returns 0, if the keysequence is valid, otherwise returns -1. */
int jed_getkey_wchar (SLwchar_Type *wchp)
{
int ch;
#if JED_HAS_UTF8_SUPPORT
SLuchar_Type buf[SLUTF8_MAX_MBLEN+1];
unsigned int i;
#endif
ch = jed_getkey ();
*wchp = (SLwchar_Type) ch;
#if JED_HAS_UTF8_SUPPORT
if ((ch < 128) || (Jed_UTF8_Mode == 0))
return 0;
buf[0] = (SLuchar_Type) ch;
i = 1;
while (1)
{
unsigned int n;
if (NULL != SLutf8_decode (buf, buf+i, wchp, &n))
break;
if ((i == SLUTF8_MAX_MBLEN) || (ch < 128))
{
ungetkey_string ((char *)buf + 1, i-1);
*wchp = buf[0];
return -1;
}
ch = jed_getkey ();
buf[i] = (SLuchar_Type) ch;
i++;
}
#endif
return 0;
}
void jed_ungetkey_wchar (SLwchar_Type wc)
{
SLuchar_Type *b, buf[JED_MAX_MULTIBYTE_SIZE];
if (NULL == (b = jed_wchar_to_multibyte (wc, buf)))
return;
ungetkey_string ((char *)buf, (int)(b-buf));
}
#if SLANG_VERSION < 10410
int SLang_get_error (void)
{
return SLang_Error;
}
int SLang_set_error (int e)
{
SLang_Error = e;
return 0;
}
#endif
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