github
/
putty
зеркало из https://github.com/github/putty.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
putty/terminal.c

3768 строки
93 KiB
C
Исходник Ответственный История

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>
#include <assert.h>
#include "putty.h"
#include "tree234.h"
#define VT52_PLUS
#define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
#define CL_VT100 0x0002 /* VT100 */
#define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
#define CL_VT102 0x0008 /* VT102 */
#define CL_VT220 0x0010 /* VT220 */
#define CL_VT320 0x0020 /* VT320 */
#define CL_VT420 0x0040 /* VT420 */
#define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
#define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
#define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
#define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
#define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
#define TM_VT100 (CL_ANSIMIN|CL_VT100)
#define TM_VT100AVO (TM_VT100|CL_VT100AVO)
#define TM_VT102 (TM_VT100AVO|CL_VT102)
#define TM_VT220 (TM_VT102|CL_VT220)
#define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
#define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
#define TM_PUTTY (0xFFFF)
#define compatibility(x) \
if ( ((CL_##x)&compatibility_level) == 0 ) { \
termstate=TOPLEVEL; \
break; \
}
#define compatibility2(x,y) \
if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
termstate=TOPLEVEL; \
break; \
}
#define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
static int compatibility_level = TM_PUTTY;
static tree234 *scrollback; /* lines scrolled off top of screen */
static tree234 *screen; /* lines on primary screen */
static tree234 *alt_screen; /* lines on alternate screen */
static int disptop; /* distance scrolled back (0 or -ve) */
static unsigned long *cpos; /* cursor position (convenience) */
static unsigned long *disptext; /* buffer of text on real screen */
static unsigned long *dispcurs; /* location of cursor on real screen */
static unsigned long curstype; /* type of cursor on real screen */
#define VBELL_TIMEOUT 100 /* millisecond len of visual bell */
struct beeptime {
struct beeptime *next;
unsigned long ticks;
};
static struct beeptime *beephead, *beeptail;
int nbeeps;
int beep_overloaded;
long lastbeep;
#define TSIZE (sizeof(unsigned long))
#define fix_cpos do { cpos = lineptr(curs.y) + curs.x; } while(0)
static unsigned long curr_attr, save_attr;
static unsigned long erase_char = ERASE_CHAR;
typedef struct {
int y, x;
} pos;
#define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
#define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
#define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
#define posdiff(p1,p2) ( ((p1).y - (p2).y) * (cols+1) + (p1).x - (p2).x )
#define incpos(p) ( (p).x == cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
#define decpos(p) ( (p).x == 0 ? ((p).x = cols, (p).y--, 1) : ((p).x--, 0) )
/* Product-order comparisons for rectangular block selection. */
#define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
#define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
static bufchain inbuf; /* terminal input buffer */
static pos curs; /* cursor */
static pos savecurs; /* saved cursor position */
static int marg_t, marg_b; /* scroll margins */
static int dec_om; /* DEC origin mode flag */
static int wrap, wrapnext; /* wrap flags */
static int insert; /* insert-mode flag */
static int cset; /* 0 or 1: which char set */
static int save_cset, save_csattr; /* saved with cursor position */
static int save_utf; /* saved with cursor position */
static int rvideo; /* global reverse video flag */
static unsigned long rvbell_startpoint;/* for ESC[?5hESC[?5l vbell */
static int cursor_on; /* cursor enabled flag */
static int reset_132; /* Flag ESC c resets to 80 cols */
static int use_bce; /* Use Background coloured erase */
static int blinker; /* When blinking is the cursor on ? */
static int tblinker; /* When the blinking text is on */
static int blink_is_real; /* Actually blink blinking text */
static int term_echoing; /* Does terminal want local echo? */
static int term_editing; /* Does terminal want local edit? */
static int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */
static int vt52_bold; /* Force bold on non-bold colours */
static int utf_state; /* Is there a pending UTF-8 character */
static int utf_char; /* and what is it so far. */
static int utf_size; /* The size of the UTF character. */
static int xterm_mouse; /* send mouse messages to app */
static unsigned long cset_attr[2];
/*
* Saved settings on the alternate screen.
*/
static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset, alt_sco_acs, alt_utf;
static int alt_t, alt_b;
static int alt_which;
#define ARGS_MAX 32 /* max # of esc sequence arguments */
#define ARG_DEFAULT 0 /* if an arg isn't specified */
#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
static int esc_args[ARGS_MAX];
static int esc_nargs;
static int esc_query;
#define ANSI(x,y) ((x)+((y)<<8))
#define ANSI_QUE(x) ANSI(x,TRUE)
#define OSC_STR_MAX 2048
static int osc_strlen;
static char osc_string[OSC_STR_MAX + 1];
static int osc_w;
static char id_string[1024] = "\033[?6c";
static unsigned char *tabs;
static enum {
TOPLEVEL,
SEEN_ESC,
SEEN_CSI,
SEEN_OSC,
SEEN_OSC_W,
DO_CTRLS,
SEEN_OSC_P,
OSC_STRING, OSC_MAYBE_ST,
VT52_ESC,
VT52_Y1,
VT52_Y2,
VT52_FG,
VT52_BG
} termstate;
static enum {
NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
} selstate;
static enum {
LEXICOGRAPHIC, RECTANGULAR
} seltype;
static enum {
SM_CHAR, SM_WORD, SM_LINE
} selmode;
static pos selstart, selend, selanchor;
static short wordness[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, /* 01 */
0, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 1, 1, 1, 1, 1, 1, /* 23 */
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 1, 1, 1, 1, 2, /* 45 */
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 1, 1, 1, 1, 1, /* 67 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, /* 89 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, /* AB */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
2, 2, 2, 2, 2, 2, 2, 2, /* CD */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
2, 2, 2, 2, 2, 2, 2, 2, /* EF */
};
#define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
static wchar_t sel_nl[] = SEL_NL;
static wchar_t *paste_buffer = 0;
static int paste_len, paste_pos, paste_hold;
/*
* Internal prototypes.
*/
static void do_paint(Context, int);
static void erase_lots(int, int, int);
static void swap_screen(int);
static void update_sbar(void);
static void deselect(void);
/* log session to file stuff ... */
static FILE *lgfp = NULL;
static void logtraffic(unsigned char c, int logmode);
static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm);
/*
* Resize a line to make it `cols' columns wide.
*/
unsigned long *resizeline(unsigned long *line, int cols)
{
int i, oldlen;
unsigned long lineattrs;
if (line[0] != (unsigned long)cols) {
/*
* This line is the wrong length, which probably means it
* hasn't been accessed since a resize. Resize it now.
*/
oldlen = line[0];
lineattrs = line[oldlen + 1];
line = srealloc(line, TSIZE * (2 + cols));
line[0] = cols;
for (i = oldlen; i < cols; i++)
line[i + 1] = ERASE_CHAR;
line[cols + 1] = lineattrs & LATTR_MODE;
}
return line;
}
/*
* Retrieve a line of the screen or of the scrollback, according to
* whether the y coordinate is non-negative or negative
* (respectively).
*/
unsigned long *lineptr(int y, int lineno)
{
unsigned long *line, *newline;
tree234 *whichtree;
int treeindex;
if (y >= 0) {
whichtree = screen;
treeindex = y;
} else {
whichtree = scrollback;
treeindex = y + count234(scrollback);
}
line = index234(whichtree, treeindex);
/* We assume that we don't screw up and retrieve something out of range. */
assert(line != NULL);
newline = resizeline(line, cols);
if (newline != line) {
delpos234(whichtree, treeindex);
addpos234(whichtree, newline, treeindex);
line = newline;
}
return line + 1;
}
#define lineptr(x) lineptr(x,__LINE__)
/*
* Set up power-on settings for the terminal.
*/
static void power_on(void)
{
curs.x = curs.y = alt_x = alt_y = savecurs.x = savecurs.y = 0;
alt_t = marg_t = 0;
if (rows != -1)
alt_b = marg_b = rows - 1;
else
alt_b = marg_b = 0;
if (cols != -1) {
int i;
for (i = 0; i < cols; i++)
tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
}
alt_om = dec_om = cfg.dec_om;
alt_wnext = wrapnext = alt_ins = insert = FALSE;
alt_wrap = wrap = cfg.wrap_mode;
alt_cset = cset = 0;
alt_utf = utf = 0;
alt_sco_acs = sco_acs = 0;
cset_attr[0] = cset_attr[1] = ATTR_ASCII;
rvideo = 0;
in_vbell = FALSE;
cursor_on = 1;
big_cursor = 0;
save_attr = curr_attr = ATTR_DEFAULT;
term_editing = term_echoing = FALSE;
ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
app_cursor_keys = cfg.app_cursor;
app_keypad_keys = cfg.app_keypad;
use_bce = cfg.bce;
blink_is_real = cfg.blinktext;
erase_char = ERASE_CHAR;
alt_which = 0;
{
int i;
for (i = 0; i < 256; i++)
wordness[i] = cfg.wordness[i];
}
if (screen) {
swap_screen(1);
erase_lots(FALSE, TRUE, TRUE);
swap_screen(0);
erase_lots(FALSE, TRUE, TRUE);
}
}
/*
* Force a screen update.
*/
void term_update(void)
{
Context ctx;
ctx = get_ctx();
if (ctx) {
int need_sbar_update = seen_disp_event;
if ((seen_key_event && (cfg.scroll_on_key)) ||
(seen_disp_event && (cfg.scroll_on_disp))) {
disptop = 0; /* return to main screen */
seen_disp_event = seen_key_event = 0;
need_sbar_update = TRUE;
}
if (need_sbar_update)
update_sbar();
do_paint(ctx, TRUE);
sys_cursor(curs.x, curs.y - disptop);
free_ctx(ctx);
}
}
/*
* Same as power_on(), but an external function.
*/
void term_pwron(void)
{
power_on();
fix_cpos;
disptop = 0;
deselect();
term_update();
}
/*
* Clear the scrollback.
*/
void term_clrsb(void)
{
unsigned long *line;
disptop = 0;
while ((line = delpos234(scrollback, 0)) != NULL) {
sfree(line);
}
update_sbar();
}
/*
* Initialise the terminal.
*/
void term_init(void)
{
screen = alt_screen = scrollback = NULL;
disptop = 0;
disptext = dispcurs = NULL;
tabs = NULL;
deselect();
rows = cols = -1;
power_on();
beephead = beeptail = NULL;
nbeeps = 0;
lastbeep = FALSE;
beep_overloaded = FALSE;
}
/*
* Set up the terminal for a given size.
*/
void term_size(int newrows, int newcols, int newsavelines)
{
tree234 *newalt;
unsigned long *newdisp, *line;
int i, j;
int sblen;
int save_alt_which = alt_which;
if (newrows == rows && newcols == cols && newsavelines == savelines)
return; /* nothing to do */
deselect();
swap_screen(0);
alt_t = marg_t = 0;
alt_b = marg_b = newrows - 1;
if (rows == -1) {
scrollback = newtree234(NULL);
screen = newtree234(NULL);
rows = 0;
}
/*
* Resize the screen and scrollback. We only need to shift
* lines around within our data structures, because lineptr()
* will take care of resizing each individual line if
* necessary. So:
*
* - If the new screen and the old screen differ in length, we
* must shunt some lines in from the scrollback or out to
* the scrollback.
*
* - If doing that fails to provide us with enough material to
* fill the new screen (i.e. the number of rows needed in
* the new screen exceeds the total number in the previous
* screen+scrollback), we must invent some blank lines to
* cover the gap.
*
* - Then, if the new scrollback length is less than the
* amount of scrollback we actually have, we must throw some
* away.
*/
sblen = count234(scrollback);
/* Do this loop to expand the screen if newrows > rows */
for (i = rows; i < newrows; i++) {
if (sblen > 0) {
line = delpos234(scrollback, --sblen);
} else {
line = smalloc(TSIZE * (newcols + 2));
line[0] = newcols;
for (j = 0; j <= newcols; j++)
line[j + 1] = ERASE_CHAR;
}
addpos234(screen, line, 0);
}
/* Do this loop to shrink the screen if newrows < rows */
for (i = newrows; i < rows; i++) {
line = delpos234(screen, 0);
addpos234(scrollback, line, sblen++);
}
assert(count234(screen) == newrows);
while (sblen > newsavelines) {
line = delpos234(scrollback, 0);
sfree(line);
sblen--;
}
assert(count234(scrollback) <= newsavelines);
disptop = 0;
newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
for (i = 0; i < newrows * (newcols + 1); i++)
newdisp[i] = ATTR_INVALID;
sfree(disptext);
disptext = newdisp;
dispcurs = NULL;
newalt = newtree234(NULL);
for (i = 0; i < newrows; i++) {
line = smalloc(TSIZE * (newcols + 2));
line[0] = newcols;
for (j = 0; j <= newcols; j++)
line[j + 1] = erase_char;
addpos234(newalt, line, i);
}
if (alt_screen) {
while (NULL != (line = delpos234(alt_screen, 0)))
sfree(line);
freetree234(alt_screen);
}
alt_screen = newalt;
tabs = srealloc(tabs, newcols * sizeof(*tabs));
{
int i;
for (i = (cols > 0 ? cols : 0); i < newcols; i++)
tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
}
if (rows > 0)
curs.y += newrows - rows;
if (curs.y < 0)
curs.y = 0;
if (curs.y >= newrows)
curs.y = newrows - 1;
if (curs.x >= newcols)
curs.x = newcols - 1;
alt_x = alt_y = 0;
wrapnext = alt_wnext = FALSE;
rows = newrows;
cols = newcols;
savelines = newsavelines;
fix_cpos;
swap_screen(save_alt_which);
update_sbar();
term_update();
back->size();
}
/*
* Swap screens.
*/
static void swap_screen(int which)
{
int t;
tree234 *ttr;
if (which == alt_which)
return;
alt_which = which;
ttr = alt_screen;
alt_screen = screen;
screen = ttr;
t = curs.x;
curs.x = alt_x;
alt_x = t;
t = curs.y;
curs.y = alt_y;
alt_y = t;
t = marg_t;
marg_t = alt_t;
alt_t = t;
t = marg_b;
marg_b = alt_b;
alt_b = t;
t = dec_om;
dec_om = alt_om;
alt_om = t;
t = wrap;
wrap = alt_wrap;
alt_wrap = t;
t = wrapnext;
wrapnext = alt_wnext;
alt_wnext = t;
t = insert;
insert = alt_ins;
alt_ins = t;
t = cset;
cset = alt_cset;
alt_cset = t;
t = utf;
utf = alt_utf;
alt_utf = t;
t = sco_acs;
sco_acs = alt_sco_acs;
alt_sco_acs = t;
fix_cpos;
}
/*
* Update the scroll bar.
*/
static void update_sbar(void)
{
int nscroll;
nscroll = count234(scrollback);
set_sbar(nscroll + rows, nscroll + disptop, rows);
}
/*
* Check whether the region bounded by the two pointers intersects
* the scroll region, and de-select the on-screen selection if so.
*/
static void check_selection(pos from, pos to)
{
if (poslt(from, selend) && poslt(selstart, to))
deselect();
}
/*
* Scroll the screen. (`lines' is +ve for scrolling forward, -ve
* for backward.) `sb' is TRUE if the scrolling is permitted to
* affect the scrollback buffer.
*
* NB this function invalidates all pointers into lines of the
* screen data structures. In particular, you MUST call fix_cpos
* after calling scroll() and before doing anything else that
* uses the cpos shortcut pointer.
*/
static void scroll(int topline, int botline, int lines, int sb)
{
unsigned long *line, *line2;
int i, seltop;
if (topline != 0 || alt_which != 0)
sb = FALSE;
if (lines < 0) {
while (lines < 0) {
line = delpos234(screen, botline);
line = resizeline(line, cols);
for (i = 0; i < cols; i++)
line[i + 1] = erase_char;
line[cols + 1] = 0;
addpos234(screen, line, topline);
if (selstart.y >= topline && selstart.y <= botline) {
selstart.y++;
if (selstart.y > botline) {
selstart.y = botline;
selstart.x = 0;
}
}
if (selend.y >= topline && selend.y <= botline) {
selend.y++;
if (selend.y > botline) {
selend.y = botline;
selend.x = 0;
}
}
lines++;
}
} else {
while (lines > 0) {
line = delpos234(screen, topline);
if (sb && savelines > 0) {
int sblen = count234(scrollback);
/*
* We must add this line to the scrollback. We'll
* remove a line from the top of the scrollback to
* replace it, or allocate a new one if the
* scrollback isn't full.
*/
if (sblen == savelines) {
sblen--, line2 = delpos234(scrollback, 0);
} else {
line2 = smalloc(TSIZE * (cols + 2));
line2[0] = cols;
}
addpos234(scrollback, line, sblen);
line = line2;
/*
* If the user is currently looking at part of the
* scrollback, and they haven't enabled any options
* that are going to reset the scrollback as a
* result of this movement, then the chances are
* they'd like to keep looking at the same line. So
* we move their viewpoint at the same rate as the
* scroll, at least until their viewpoint hits the
* top end of the scrollback buffer, at which point
* we don't have the choice any more.
*
* Thanks to Jan Holmen Holsten for the idea and
* initial implementation.
*/
if (disptop > -savelines && disptop < 0)
disptop--;
}
line = resizeline(line, cols);
for (i = 0; i < cols; i++)
line[i + 1] = erase_char;
line[cols + 1] = 0;
addpos234(screen, line, botline);
/*
* If the selection endpoints move into the scrollback,
* we keep them moving until they hit the top. However,
* of course, if the line _hasn't_ moved into the
* scrollback then we don't do this, and cut them off
* at the top of the scroll region.
*
* This applies to selstart and selend (for an existing
* selection), and also selanchor (for one being
* selected as we speak).
*/
seltop = sb ? -savelines : topline;
if (selstart.y >= seltop && selstart.y <= botline) {
selstart.y--;
if (selstart.y < seltop) {
selstart.y = seltop;
selstart.x = 0;
}
}
if (selend.y >= seltop && selend.y <= botline) {
selend.y--;
if (selend.y < seltop) {
selend.y = seltop;
selend.x = 0;
}
}
if (selanchor.y >= seltop && selanchor.y <= botline) {
selanchor.y--;
if (selanchor.y < seltop) {
selanchor.y = seltop;
selanchor.x = 0;
}
}
lines--;
}
}
}
/*
* Move the cursor to a given position, clipping at boundaries. We
* may or may not want to clip at the scroll margin: marg_clip is 0
* not to, 1 to disallow _passing_ the margins, and 2 to disallow
* even _being_ outside the margins.
*/
static void move(int x, int y, int marg_clip)
{
if (x < 0)
x = 0;
if (x >= cols)
x = cols - 1;
if (marg_clip) {
if ((curs.y >= marg_t || marg_clip == 2) && y < marg_t)
y = marg_t;
if ((curs.y <= marg_b || marg_clip == 2) && y > marg_b)
y = marg_b;
}
if (y < 0)
y = 0;
if (y >= rows)
y = rows - 1;
curs.x = x;
curs.y = y;
fix_cpos;
wrapnext = FALSE;
}
/*
* Save or restore the cursor and SGR mode.
*/
static void save_cursor(int save)
{
if (save) {
savecurs = curs;
save_attr = curr_attr;
save_cset = cset;
save_utf = utf;
save_csattr = cset_attr[cset];
save_sco_acs = sco_acs;
} else {
curs = savecurs;
/* Make sure the window hasn't shrunk since the save */
if (curs.x >= cols)
curs.x = cols - 1;
if (curs.y >= rows)
curs.y = rows - 1;
curr_attr = save_attr;
cset = save_cset;
utf = save_utf;
cset_attr[cset] = save_csattr;
sco_acs = save_sco_acs;
fix_cpos;
if (use_bce)
erase_char = (' ' | ATTR_ASCII |
(curr_attr & (ATTR_FGMASK | ATTR_BGMASK)));
}
}
/*
* Erase a large portion of the screen: the whole screen, or the
* whole line, or parts thereof.
*/
static void erase_lots(int line_only, int from_begin, int to_end)
{
pos start, end;
int erase_lattr;
unsigned long *ldata;
if (line_only) {
start.y = curs.y;
start.x = 0;
end.y = curs.y + 1;
end.x = 0;
erase_lattr = FALSE;
} else {
start.y = 0;
start.x = 0;
end.y = rows;
end.x = 0;
erase_lattr = TRUE;
}
if (!from_begin) {
start = curs;
}
if (!to_end) {
end = curs;
incpos(end);
}
check_selection(start, end);
/* Clear screen also forces a full window redraw, just in case. */
if (start.y == 0 && start.x == 0 && end.y == rows)
term_invalidate();
ldata = lineptr(start.y);
while (poslt(start, end)) {
if (start.x == cols && !erase_lattr)
ldata[start.x] &= ~LATTR_WRAPPED;
else
ldata[start.x] = erase_char;
if (incpos(start) && start.y < rows)
ldata = lineptr(start.y);
}
}
/*
* Insert or delete characters within the current line. n is +ve if
* insertion is desired, and -ve for deletion.
*/
static void insch(int n)
{
int dir = (n < 0 ? -1 : +1);
int m;
pos cursplus;
unsigned long *ldata;
n = (n < 0 ? -n : n);
if (n > cols - curs.x)
n = cols - curs.x;
m = cols - curs.x - n;
cursplus.y = curs.y;
cursplus.x = curs.x + n;
check_selection(curs, cursplus);
ldata = lineptr(curs.y);
if (dir < 0) {
memmove(ldata + curs.x, ldata + curs.x + n, m * TSIZE);
while (n--)
ldata[curs.x + m++] = erase_char;
} else {
memmove(ldata + curs.x + n, ldata + curs.x, m * TSIZE);
while (n--)
ldata[curs.x + n] = erase_char;
}
}
/*
* Toggle terminal mode `mode' to state `state'. (`query' indicates
* whether the mode is a DEC private one or a normal one.)
*/
static void toggle_mode(int mode, int query, int state)
{
unsigned long ticks;
if (query)
switch (mode) {
case 1: /* application cursor keys */
app_cursor_keys = state;
break;
case 2: /* VT52 mode */
vt52_mode = !state;
if (vt52_mode) {
blink_is_real = FALSE;
vt52_bold = FALSE;
} else {
blink_is_real = cfg.blinktext;
}
break;
case 3: /* 80/132 columns */
deselect();
request_resize(state ? 132 : 80, rows);
reset_132 = state;
break;
case 5: /* reverse video */
/*
* Toggle reverse video. If we receive an OFF within the
* visual bell timeout period after an ON, we trigger an
* effective visual bell, so that ESC[?5hESC[?5l will
* always be an actually _visible_ visual bell.
*/
ticks = GetTickCount();
/* turn off a previous vbell to avoid inconsistencies */
if (ticks - vbell_startpoint >= VBELL_TIMEOUT)
in_vbell = FALSE;
if (rvideo && !state && /* we're turning it off... */
(ticks - rvbell_startpoint) < VBELL_TIMEOUT) { /* ...soon */
/* If there's no vbell timeout already, or this one lasts
* longer, replace vbell_timeout with ours. */
if (!in_vbell ||
(rvbell_startpoint - vbell_startpoint < VBELL_TIMEOUT))
vbell_startpoint = rvbell_startpoint;
in_vbell = TRUE; /* we may clear rvideo but we set in_vbell */
} else if (!rvideo && state) {
/* This is an ON, so we notice the time and save it. */
rvbell_startpoint = ticks;
}
rvideo = state;
seen_disp_event = TRUE;
if (state)
term_update();
break;
case 6: /* DEC origin mode */
dec_om = state;
break;
case 7: /* auto wrap */
wrap = state;
break;
case 8: /* auto key repeat */
repeat_off = !state;
break;
case 10: /* set local edit mode */
term_editing = state;
ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
break;
case 25: /* enable/disable cursor */
compatibility2(OTHER, VT220);
cursor_on = state;
seen_disp_event = TRUE;
break;
case 47: /* alternate screen */
compatibility(OTHER);
deselect();
swap_screen(state);
disptop = 0;
break;
case 1000: /* xterm mouse 1 */
xterm_mouse = state ? 1 : 0;
set_raw_mouse_mode(state);
break;
case 1002: /* xterm mouse 2 */
xterm_mouse = state ? 2 : 0;
set_raw_mouse_mode(state);
break;
} else
switch (mode) {
case 4: /* set insert mode */
compatibility(VT102);
insert = state;
break;
case 12: /* set echo mode */
term_echoing = !state;
ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
break;
case 20: /* Return sends ... */
cr_lf_return = state;
break;
case 34: /* Make cursor BIG */
compatibility2(OTHER, VT220);
big_cursor = !state;
}
}
/*
* Process an OSC sequence: set window title or icon name.
*/
static void do_osc(void)
{
if (osc_w) {
while (osc_strlen--)
wordness[(unsigned char) osc_string[osc_strlen]] = esc_args[0];
} else {
osc_string[osc_strlen] = '\0';
switch (esc_args[0]) {
case 0:
case 1:
set_icon(osc_string);
if (esc_args[0] == 1)
break;
/* fall through: parameter 0 means set both */
case 2:
case 21:
set_title(osc_string);
break;
}
}
}
/*
* Remove everything currently in `inbuf' and stick it up on the
* in-memory display. There's a big state machine in here to
* process escape sequences...
*/
void term_out(void)
{
int c, unget;
unsigned char localbuf[256], *chars;
int nchars = 0;
unget = -1;
while (nchars > 0 || bufchain_size(&inbuf) > 0) {
if (unget == -1) {
if (nchars == 0) {
void *ret;
bufchain_prefix(&inbuf, &ret, &nchars);
if (nchars > sizeof(localbuf))
nchars = sizeof(localbuf);
memcpy(localbuf, ret, nchars);
bufchain_consume(&inbuf, nchars);
chars = localbuf;
assert(chars != NULL);
}
c = *chars++;
nchars--;
/*
* Optionally log the session traffic to a file. Useful for
* debugging and possibly also useful for actual logging.
*/
if (cfg.logtype == LGTYP_DEBUG)
logtraffic((unsigned char) c, LGTYP_DEBUG);
} else {
c = unget;
unget = -1;
}
/* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
* be able to display 8-bit characters, but I'll let that go 'cause
* of i18n.
*/
/* First see about all those translations. */
if (termstate == TOPLEVEL) {
if (in_utf)
switch (utf_state) {
case 0:
if (c < 0x80) {
/* UTF-8 must be stateless so we ignore iso2022. */
if (unitab_ctrl[c] != 0xFF)
c = unitab_ctrl[c];
else c = ((unsigned char)c) | ATTR_ASCII;
break;
} else if ((c & 0xe0) == 0xc0) {
utf_size = utf_state = 1;
utf_char = (c & 0x1f);
} else if ((c & 0xf0) == 0xe0) {
utf_size = utf_state = 2;
utf_char = (c & 0x0f);
} else if ((c & 0xf8) == 0xf0) {
utf_size = utf_state = 3;
utf_char = (c & 0x07);
} else if ((c & 0xfc) == 0xf8) {
utf_size = utf_state = 4;
utf_char = (c & 0x03);
} else if ((c & 0xfe) == 0xfc) {
utf_size = utf_state = 5;
utf_char = (c & 0x01);
} else {
c = UCSERR;
break;
}
continue;
case 1:
case 2:
case 3:
case 4:
case 5:
if ((c & 0xC0) != 0x80) {
unget = c;
c = UCSERR;
utf_state = 0;
break;
}
utf_char = (utf_char << 6) | (c & 0x3f);
if (--utf_state)
continue;
c = utf_char;
/* Is somebody trying to be evil! */
if (c < 0x80 ||
(c < 0x800 && utf_size >= 2) ||
(c < 0x10000 && utf_size >= 3) ||
(c < 0x200000 && utf_size >= 4) ||
(c < 0x4000000 && utf_size >= 5))
c = UCSERR;
/* Unicode line separator and paragraph separator are CR-LF */
if (c == 0x2028 || c == 0x2029)
c = 0x85;
/* High controls are probably a Baaad idea too. */
if (c < 0xA0)
c = 0xFFFD;
/* The UTF-16 surrogates are not nice either. */
/* The standard give the option of decoding these:
* I don't want to! */
if (c >= 0xD800 && c < 0xE000)
c = UCSERR;
/* ISO 10646 characters now limited to UTF-16 range. */
if (c > 0x10FFFF)
c = UCSERR;
/* This is currently a TagPhobic application.. */
if (c >= 0xE0000 && c <= 0xE007F)
continue;
/* U+FEFF is best seen as a null. */
if (c == 0xFEFF)
continue;
/* But U+FFFE is an error. */
if (c == 0xFFFE || c == 0xFFFF)
c = UCSERR;
/* Oops this is a 16bit implementation */
if (c >= 0x10000)
c = 0xFFFD;
break;
}
/* Are we in the nasty ACS mode? Note: no sco in utf mode. */
else if(sco_acs &&
(c!='\033' && c!='\n' && c!='\r' && c!='\b'))
{
if (sco_acs == 2) c ^= 0x80;
c |= ATTR_SCOACS;
} else {
switch (cset_attr[cset]) {
/*
* Linedraw characters are different from 'ESC ( B'
* only for a small range. For ones outside that
* range, make sure we use the same font as well as
* the same encoding.
*/
case ATTR_LINEDRW:
if (unitab_ctrl[c] != 0xFF)
c = unitab_ctrl[c];
else
c = ((unsigned char) c) | ATTR_LINEDRW;
break;
case ATTR_GBCHR:
/* If UK-ASCII, make the '#' a LineDraw Pound */
if (c == '#') {
c = '}' | ATTR_LINEDRW;
break;
}
/*FALLTHROUGH*/ case ATTR_ASCII:
if (unitab_ctrl[c] != 0xFF)
c = unitab_ctrl[c];
else
c = ((unsigned char) c) | ATTR_ASCII;
break;
case ATTR_SCOACS:
if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
break;
}
}
}
/* How about C1 controls ? */
if ((c & -32) == 0x80 && termstate < DO_CTRLS && !vt52_mode &&
has_compat(VT220)) {
termstate = SEEN_ESC;
esc_query = FALSE;
c = '@' + (c & 0x1F);
}
/* Or the GL control. */
if (c == '\177' && termstate < DO_CTRLS && has_compat(OTHER)) {
if (curs.x && !wrapnext)
curs.x--;
wrapnext = FALSE;
fix_cpos;
*cpos = (' ' | curr_attr | ATTR_ASCII);
} else
/* Or normal C0 controls. */
if ((c & -32) == 0 && termstate < DO_CTRLS) {
switch (c) {
case '\005': /* terminal type query */
/* Strictly speaking this is VT100 but a VT100 defaults to
* no response. Other terminals respond at their option.
*
* Don't put a CR in the default string as this tends to
* upset some weird software.
*
* An xterm returns "xterm" (5 characters)
*/
compatibility(ANSIMIN);
{
char abuf[256], *s, *d;
int state = 0;
for (s = cfg.answerback, d = abuf; *s; s++) {
if (state) {
if (*s >= 'a' && *s <= 'z')
*d++ = (*s - ('a' - 1));
else if ((*s >= '@' && *s <= '_') ||
*s == '?' || (*s & 0x80))
*d++ = ('@' ^ *s);
else if (*s == '~')
*d++ = '^';
state = 0;
} else if (*s == '^') {
state = 1;
} else
*d++ = *s;
}
lpage_send(CP_ACP, abuf, d - abuf, 0);
}
break;
case '\007':
{
struct beeptime *newbeep;
unsigned long ticks;
ticks = GetTickCount();
if (!beep_overloaded) {
newbeep = smalloc(sizeof(struct beeptime));
newbeep->ticks = ticks;
newbeep->next = NULL;
if (!beephead)
beephead = newbeep;
else
beeptail->next = newbeep;
beeptail = newbeep;
nbeeps++;
}
/*
* Throw out any beeps that happened more than
* t seconds ago.
*/
while (beephead &&
beephead->ticks < ticks - cfg.bellovl_t) {
struct beeptime *tmp = beephead;
beephead = tmp->next;
sfree(tmp);
if (!beephead)
beeptail = NULL;
nbeeps--;
}
if (cfg.bellovl && beep_overloaded &&
ticks - lastbeep >= (unsigned)cfg.bellovl_s) {
/*
* If we're currently overloaded and the
* last beep was more than s seconds ago,
* leave overload mode.
*/
beep_overloaded = FALSE;
} else if (cfg.bellovl && !beep_overloaded &&
nbeeps >= cfg.bellovl_n) {
/*
* Now, if we have n or more beeps
* remaining in the queue, go into overload
* mode.
*/
beep_overloaded = TRUE;
}
lastbeep = ticks;
/*
* Perform an actual beep if we're not overloaded.
*/
if (!cfg.bellovl || !beep_overloaded) {
beep(cfg.beep);
if (cfg.beep == BELL_VISUAL) {
in_vbell = TRUE;
vbell_startpoint = ticks;
term_update();
}
}
disptop = 0;
}
break;
case '\b':
if (curs.x == 0 && (curs.y == 0 || wrap == 0));
else if (curs.x == 0 && curs.y > 0)
curs.x = cols - 1, curs.y--;
else if (wrapnext)
wrapnext = FALSE;
else
curs.x--;
fix_cpos;
seen_disp_event = TRUE;
break;
case '\016':
compatibility(VT100);
cset = 1;
break;
case '\017':
compatibility(VT100);
cset = 0;
break;
case '\033':
if (vt52_mode)
termstate = VT52_ESC;
else {
compatibility(ANSIMIN);
termstate = SEEN_ESC;
esc_query = FALSE;
}
break;
case '\r':
curs.x = 0;
wrapnext = FALSE;
fix_cpos;
seen_disp_event = TRUE;
paste_hold = 0;
logtraffic((unsigned char) c, LGTYP_ASCII);
break;
case '\014':
if (has_compat(SCOANSI)) {
move(0, 0, 0);
erase_lots(FALSE, FALSE, TRUE);
disptop = 0;
wrapnext = FALSE;
seen_disp_event = 1;
break;
}
case '\013':
compatibility(VT100);
case '\n':
if (curs.y == marg_b)
scroll(marg_t, marg_b, 1, TRUE);
else if (curs.y < rows - 1)
curs.y++;
if (cfg.lfhascr)
curs.x = 0;
fix_cpos;
wrapnext = FALSE;
seen_disp_event = 1;
paste_hold = 0;
logtraffic((unsigned char) c, LGTYP_ASCII);
break;
case '\t':
{
pos old_curs = curs;
unsigned long *ldata = lineptr(curs.y);
do {
curs.x++;
} while (curs.x < cols - 1 && !tabs[curs.x]);
if ((ldata[cols] & LATTR_MODE) != LATTR_NORM) {
if (curs.x >= cols / 2)
curs.x = cols / 2 - 1;
} else {
if (curs.x >= cols)
curs.x = cols - 1;
}
fix_cpos;
check_selection(old_curs, curs);
}
seen_disp_event = TRUE;
break;
}
} else
switch (termstate) {
case TOPLEVEL:
/* Only graphic characters get this far, ctrls are stripped above */
if (wrapnext && wrap) {
cpos[1] |= LATTR_WRAPPED;
if (curs.y == marg_b)
scroll(marg_t, marg_b, 1, TRUE);
else if (curs.y < rows - 1)
curs.y++;
curs.x = 0;
fix_cpos;
wrapnext = FALSE;
}
if (insert)
insch(1);
if (selstate != NO_SELECTION) {
pos cursplus = curs;
incpos(cursplus);
check_selection(curs, cursplus);
}
if ((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0)
logtraffic((unsigned char) c, LGTYP_ASCII);
{
extern int wcwidth(wchar_t ucs);
int width = 0;
if (DIRECT_CHAR(c))
width = 1;
if (!width)
width = wcwidth((wchar_t) c);
switch (width) {
case 2:
*cpos++ = c | curr_attr;
if (++curs.x == cols) {
*cpos |= LATTR_WRAPPED;
if (curs.y == marg_b)
scroll(marg_t, marg_b, 1, TRUE);
else if (curs.y < rows - 1)
curs.y++;
curs.x = 0;
fix_cpos;
}
*cpos++ = UCSWIDE | curr_attr;
break;
case 1:
*cpos++ = c | curr_attr;
break;
default:
continue;
}
}
curs.x++;
if (curs.x == cols) {
cpos--;
curs.x--;
wrapnext = TRUE;
if (wrap && vt52_mode) {
cpos[1] |= LATTR_WRAPPED;
if (curs.y == marg_b)
scroll(marg_t, marg_b, 1, TRUE);
else if (curs.y < rows - 1)
curs.y++;
curs.x = 0;
fix_cpos;
wrapnext = FALSE;
}
}
seen_disp_event = 1;
break;
case OSC_MAYBE_ST:
/*
* This state is virtually identical to SEEN_ESC, with the
* exception that we have an OSC sequence in the pipeline,
* and _if_ we see a backslash, we process it.
*/
if (c == '\\') {
do_osc();
termstate = TOPLEVEL;
break;
}
/* else fall through */
case SEEN_ESC:
if (c >= ' ' && c <= '/') {
if (esc_query)
esc_query = -1;
else
esc_query = c;
break;
}
termstate = TOPLEVEL;
switch (ANSI(c, esc_query)) {
case '[': /* enter CSI mode */
termstate = SEEN_CSI;
esc_nargs = 1;
esc_args[0] = ARG_DEFAULT;
esc_query = FALSE;
break;
case ']': /* xterm escape sequences */
/* Compatibility is nasty here, xterm, linux, decterm yuk! */
compatibility(OTHER);
termstate = SEEN_OSC;
esc_args[0] = 0;
break;
case '7': /* save cursor */
compatibility(VT100);
save_cursor(TRUE);
break;
case '8': /* restore cursor */
compatibility(VT100);
save_cursor(FALSE);
seen_disp_event = TRUE;
break;
case '=':
compatibility(VT100);
app_keypad_keys = TRUE;
break;
case '>':
compatibility(VT100);
app_keypad_keys = FALSE;
break;
case 'D': /* exactly equivalent to LF */
compatibility(VT100);
if (curs.y == marg_b)
scroll(marg_t, marg_b, 1, TRUE);
else if (curs.y < rows - 1)
curs.y++;
fix_cpos;
wrapnext = FALSE;
seen_disp_event = TRUE;
break;
case 'E': /* exactly equivalent to CR-LF */
compatibility(VT100);
curs.x = 0;
if (curs.y == marg_b)
scroll(marg_t, marg_b, 1, TRUE);
else if (curs.y < rows - 1)
curs.y++;
fix_cpos;
wrapnext = FALSE;
seen_disp_event = TRUE;
break;
case 'M': /* reverse index - backwards LF */
compatibility(VT100);
if (curs.y == marg_t)
scroll(marg_t, marg_b, -1, TRUE);
else if (curs.y > 0)
curs.y--;
fix_cpos;
wrapnext = FALSE;
seen_disp_event = TRUE;
break;
case 'Z': /* terminal type query */
compatibility(VT100);
ldisc_send(id_string, strlen(id_string), 0);
break;
case 'c': /* restore power-on settings */
compatibility(VT100);
power_on();
if (reset_132) {
request_resize(80, rows);
reset_132 = 0;
}
fix_cpos;
disptop = 0;
seen_disp_event = TRUE;
break;
case 'H': /* set a tab */
compatibility(VT100);
tabs[curs.x] = TRUE;
break;
case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
compatibility(VT100);
{
unsigned long *ldata;
int i, j;
pos scrtop, scrbot;
for (i = 0; i < rows; i++) {
ldata = lineptr(i);
for (j = 0; j < cols; j++)
ldata[j] = ATTR_DEFAULT | 'E';
ldata[cols] = 0;
}
disptop = 0;
seen_disp_event = TRUE;
scrtop.x = scrtop.y = 0;
scrbot.x = 0;
scrbot.y = rows;
check_selection(scrtop, scrbot);
}
break;
case ANSI('3', '#'):
case ANSI('4', '#'):
case ANSI('5', '#'):
case ANSI('6', '#'):
compatibility(VT100);
{
unsigned long nlattr;
unsigned long *ldata;
switch (ANSI(c, esc_query)) {
case ANSI('3', '#'):
nlattr = LATTR_TOP;
break;
case ANSI('4', '#'):
nlattr = LATTR_BOT;
break;
case ANSI('5', '#'):
nlattr = LATTR_NORM;
break;
default: /* spiritually case ANSI('6', '#'): */
nlattr = LATTR_WIDE;
break;
}
ldata = lineptr(curs.y);
ldata[cols] &= ~LATTR_MODE;
ldata[cols] |= nlattr;
}
break;
case ANSI('A', '('):
compatibility(VT100);
cset_attr[0] = ATTR_GBCHR;
break;
case ANSI('B', '('):
compatibility(VT100);
cset_attr[0] = ATTR_ASCII;
break;
case ANSI('0', '('):
compatibility(VT100);
cset_attr[0] = ATTR_LINEDRW;
break;
case ANSI('U', '('):
compatibility(OTHER);
cset_attr[0] = ATTR_SCOACS;
break;
case ANSI('A', ')'):
compatibility(VT100);
cset_attr[1] = ATTR_GBCHR;
break;
case ANSI('B', ')'):
compatibility(VT100);
cset_attr[1] = ATTR_ASCII;
break;
case ANSI('0', ')'):
compatibility(VT100);
cset_attr[1] = ATTR_LINEDRW;
break;
case ANSI('U', ')'):
compatibility(OTHER);
cset_attr[1] = ATTR_SCOACS;
break;
case ANSI('8', '%'): /* Old Linux code */
case ANSI('G', '%'):
compatibility(OTHER);
utf = 1;
break;
case ANSI('@', '%'):
compatibility(OTHER);
utf = 0;
break;
}
break;
case SEEN_CSI:
termstate = TOPLEVEL; /* default */
if (isdigit(c)) {
if (esc_nargs <= ARGS_MAX) {
if (esc_args[esc_nargs - 1] == ARG_DEFAULT)
esc_args[esc_nargs - 1] = 0;
esc_args[esc_nargs - 1] =
10 * esc_args[esc_nargs - 1] + c - '0';
}
termstate = SEEN_CSI;
} else if (c == ';') {
if (++esc_nargs <= ARGS_MAX)
esc_args[esc_nargs - 1] = ARG_DEFAULT;
termstate = SEEN_CSI;
} else if (c < '@') {
if (esc_query)
esc_query = -1;
else if (c == '?')
esc_query = TRUE;
else
esc_query = c;
termstate = SEEN_CSI;
} else
switch (ANSI(c, esc_query)) {
case 'A': /* move up N lines */
move(curs.x, curs.y - def(esc_args[0], 1), 1);
seen_disp_event = TRUE;
break;
case 'e': /* move down N lines */
compatibility(ANSI);
/* FALLTHROUGH */
case 'B':
move(curs.x, curs.y + def(esc_args[0], 1), 1);
seen_disp_event = TRUE;
break;
case ANSI('c', '>'): /* report xterm version */
compatibility(OTHER);
/* this reports xterm version 136 so that VIM can
use the drag messages from the mouse reporting */
ldisc_send("\033[>0;136;0c", 11, 0);
break;
case 'a': /* move right N cols */
compatibility(ANSI);
/* FALLTHROUGH */
case 'C':
move(curs.x + def(esc_args[0], 1), curs.y, 1);
seen_disp_event = TRUE;
break;
case 'D': /* move left N cols */
move(curs.x - def(esc_args[0], 1), curs.y, 1);
seen_disp_event = TRUE;
break;
case 'E': /* move down N lines and CR */
compatibility(ANSI);
move(0, curs.y + def(esc_args[0], 1), 1);
seen_disp_event = TRUE;
break;
case 'F': /* move up N lines and CR */
compatibility(ANSI);
move(0, curs.y - def(esc_args[0], 1), 1);
seen_disp_event = TRUE;
break;
case 'G':
case '`': /* set horizontal posn */
compatibility(ANSI);
move(def(esc_args[0], 1) - 1, curs.y, 0);
seen_disp_event = TRUE;
break;
case 'd': /* set vertical posn */
compatibility(ANSI);
move(curs.x,
(dec_om ? marg_t : 0) + def(esc_args[0],
1) - 1,
(dec_om ? 2 : 0));
seen_disp_event = TRUE;
break;
case 'H':
case 'f': /* set horz and vert posns at once */
if (esc_nargs < 2)
esc_args[1] = ARG_DEFAULT;
move(def(esc_args[1], 1) - 1,
(dec_om ? marg_t : 0) + def(esc_args[0],
1) - 1,
(dec_om ? 2 : 0));
seen_disp_event = TRUE;
break;
case 'J': /* erase screen or parts of it */
{
unsigned int i = def(esc_args[0], 0) + 1;
if (i > 3)
i = 0;
erase_lots(FALSE, !!(i & 2), !!(i & 1));
}
disptop = 0;
seen_disp_event = TRUE;
break;
case 'K': /* erase line or parts of it */
{
unsigned int i = def(esc_args[0], 0) + 1;
if (i > 3)
i = 0;
erase_lots(TRUE, !!(i & 2), !!(i & 1));
}
seen_disp_event = TRUE;
break;
case 'L': /* insert lines */
compatibility(VT102);
if (curs.y <= marg_b)
scroll(curs.y, marg_b, -def(esc_args[0], 1),
FALSE);
fix_cpos;
seen_disp_event = TRUE;
break;
case 'M': /* delete lines */
compatibility(VT102);
if (curs.y <= marg_b)
scroll(curs.y, marg_b, def(esc_args[0], 1),
TRUE);
fix_cpos;
seen_disp_event = TRUE;
break;
case '@': /* insert chars */
/* XXX VTTEST says this is vt220, vt510 manual says vt102 */
compatibility(VT102);
insch(def(esc_args[0], 1));
seen_disp_event = TRUE;
break;
case 'P': /* delete chars */
compatibility(VT102);
insch(-def(esc_args[0], 1));
seen_disp_event = TRUE;
break;
case 'c': /* terminal type query */
compatibility(VT100);
/* This is the response for a VT102 */
ldisc_send(id_string, strlen(id_string), 0);
break;
case 'n': /* cursor position query */
if (esc_args[0] == 6) {
char buf[32];
sprintf(buf, "\033[%d;%dR", curs.y + 1,
curs.x + 1);
ldisc_send(buf, strlen(buf), 0);
} else if (esc_args[0] == 5) {
ldisc_send("\033[0n", 4, 0);
}
break;
case 'h': /* toggle modes to high */
case ANSI_QUE('h'):
compatibility(VT100);
{
int i;
for (i = 0; i < esc_nargs; i++)
toggle_mode(esc_args[i], esc_query, TRUE);
}
break;
case 'l': /* toggle modes to low */
case ANSI_QUE('l'):
compatibility(VT100);
{
int i;
for (i = 0; i < esc_nargs; i++)
toggle_mode(esc_args[i], esc_query, FALSE);
}
break;
case 'g': /* clear tabs */
compatibility(VT100);
if (esc_nargs == 1) {
if (esc_args[0] == 0) {
tabs[curs.x] = FALSE;
} else if (esc_args[0] == 3) {
int i;
for (i = 0; i < cols; i++)
tabs[i] = FALSE;
}
}
break;
case 'r': /* set scroll margins */
compatibility(VT100);
if (esc_nargs <= 2) {
int top, bot;
top = def(esc_args[0], 1) - 1;
bot = (esc_nargs <= 1
|| esc_args[1] ==
0 ? rows : def(esc_args[1], rows)) - 1;
if (bot >= rows)
bot = rows - 1;
/* VTTEST Bug 9 - if region is less than 2 lines
* don't change region.
*/
if (bot - top > 0) {
marg_t = top;
marg_b = bot;
curs.x = 0;
/*
* I used to think the cursor should be
* placed at the top of the newly marginned
* area. Apparently not: VMS TPU falls over
* if so.
*
* Well actually it should for Origin mode - RDB
*/
curs.y = (dec_om ? marg_t : 0);
fix_cpos;
seen_disp_event = TRUE;
}
}
break;
case 'm': /* set graphics rendition */
{
/*
* A VT100 without the AVO only had one attribute, either
* underline or reverse video depending on the cursor type,
* this was selected by CSI 7m.
*
* case 2:
* This is sometimes DIM, eg on the GIGI and Linux
* case 8:
* This is sometimes INVIS various ANSI.
* case 21:
* This like 22 disables BOLD, DIM and INVIS
*
* The ANSI colours appear on any terminal that has colour
* (obviously) but the interaction between sgr0 and the
* colours varies but is usually related to the background
* colour erase item.
* The interaction between colour attributes and the mono
* ones is also very implementation dependent.
*
* The 39 and 49 attributes are likely to be unimplemented.
*/
int i;
for (i = 0; i < esc_nargs; i++) {
switch (def(esc_args[i], 0)) {
case 0: /* restore defaults */
curr_attr = ATTR_DEFAULT;
break;
case 1: /* enable bold */
compatibility(VT100AVO);
curr_attr |= ATTR_BOLD;
break;
case 21: /* (enable double underline) */
compatibility(OTHER);
case 4: /* enable underline */
compatibility(VT100AVO);
curr_attr |= ATTR_UNDER;
break;
case 5: /* enable blink */
compatibility(VT100AVO);
curr_attr |= ATTR_BLINK;
break;
case 7: /* enable reverse video */
curr_attr |= ATTR_REVERSE;
break;
case 10: /* SCO acs off */
compatibility(SCOANSI);
sco_acs = 0; break;
case 11: /* SCO acs on */
compatibility(SCOANSI);
sco_acs = 1; break;
case 12: /* SCO acs on flipped */
compatibility(SCOANSI);
sco_acs = 2; break;
case 22: /* disable bold */
compatibility2(OTHER, VT220);
curr_attr &= ~ATTR_BOLD;
break;
case 24: /* disable underline */
compatibility2(OTHER, VT220);
curr_attr &= ~ATTR_UNDER;
break;
case 25: /* disable blink */
compatibility2(OTHER, VT220);
curr_attr &= ~ATTR_BLINK;
break;
case 27: /* disable reverse video */
compatibility2(OTHER, VT220);
curr_attr &= ~ATTR_REVERSE;
break;
case 30:
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
/* foreground */
curr_attr &= ~ATTR_FGMASK;
curr_attr |=
(esc_args[i] - 30) << ATTR_FGSHIFT;
break;
case 39: /* default-foreground */
curr_attr &= ~ATTR_FGMASK;
curr_attr |= ATTR_DEFFG;
break;
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
/* background */
curr_attr &= ~ATTR_BGMASK;
curr_attr |=
(esc_args[i] - 40) << ATTR_BGSHIFT;
break;
case 49: /* default-background */
curr_attr &= ~ATTR_BGMASK;
curr_attr |= ATTR_DEFBG;
break;
}
}
if (use_bce)
erase_char = (' ' | ATTR_ASCII |
(curr_attr &
(ATTR_FGMASK | ATTR_BGMASK)));
}
break;
case 's': /* save cursor */
save_cursor(TRUE);
break;
case 'u': /* restore cursor */
save_cursor(FALSE);
seen_disp_event = TRUE;
break;
case 't': /* set page size - ie window height */
/*
* VT340/VT420 sequence DECSLPP, DEC only allows values
* 24/25/36/48/72/144 other emulators (eg dtterm) use
* illegal values (eg first arg 1..9) for window changing
* and reports.
*/
if (esc_nargs <= 1
&& (esc_args[0] < 1 || esc_args[0] >= 24)) {
compatibility(VT340TEXT);
request_resize(cols, def(esc_args[0], 24));
deselect();
} else if (esc_nargs >= 1 &&
esc_args[0] >= 1 &&
esc_args[0] < 24) {
compatibility(OTHER);
switch (esc_args[0]) {
int x, y, len;
char buf[80], *p;
case 1:
set_iconic(FALSE);
break;
case 2:
set_iconic(TRUE);
break;
case 3:
if (esc_nargs >= 3) {
move_window(def(esc_args[1], 0),
def(esc_args[2], 0));
}
break;
case 4:
/* We should resize the window to a given
* size in pixels here, but currently our
* resizing code isn't healthy enough to
* manage it. */
break;
case 5:
set_zorder(TRUE); /* move to top */
break;
case 6:
set_zorder(FALSE); /* move to bottom */
break;
case 7:
refresh_window();
break;
case 8:
if (esc_nargs >= 3) {
request_resize(def(esc_args[1], cfg.width),
def(esc_args[2], cfg.height));
}
break;
case 9:
if (esc_nargs >= 2)
set_zoomed(esc_args[1] ? TRUE : FALSE);
break;
case 11:
ldisc_send(is_iconic() ? "\033[1t" : "\033[2t",
4, 0);
break;
case 13:
get_window_pos(&x, &y);
len = sprintf(buf, "\033[3;%d;%dt", x, y);
ldisc_send(buf, len, 0);
break;
case 14:
get_window_pixels(&x, &y);
len = sprintf(buf, "\033[4;%d;%dt", x, y);
ldisc_send(buf, len, 0);
break;
case 18:
len = sprintf(buf, "\033[8;%d;%dt",
cols, rows);
ldisc_send(buf, len, 0);
break;
case 19:
/*
* Hmmm. Strictly speaking we
* should return `the size of the
* screen in characters', but
* that's not easy: (a) window
* furniture being what it is it's
* hard to compute, and (b) in
* resize-font mode maximising the
* window wouldn't change the
* number of characters. *shrug*. I
* think we'll ignore it for the
* moment and see if anyone
* complains, and then ask them
* what they would like it to do.
*/
break;
case 20:
p = get_window_title(TRUE);
len = strlen(p);
ldisc_send("\033]L", 3, 0);
ldisc_send(p, len, 0);
ldisc_send("\033\\", 2, 0);
break;
case 21:
p = get_window_title(FALSE);
len = strlen(p);
ldisc_send("\033]l", 3, 0);
ldisc_send(p, len, 0);
ldisc_send("\033\\", 2, 0);
break;
}
}
break;
case 'S':
compatibility(SCOANSI);
scroll(marg_t, marg_b, def(esc_args[0], 1), TRUE);
fix_cpos;
wrapnext = FALSE;
seen_disp_event = TRUE;
break;
case 'T':
compatibility(SCOANSI);
scroll(marg_t, marg_b, -def(esc_args[0], 1), TRUE);
fix_cpos;
wrapnext = FALSE;
seen_disp_event = TRUE;
break;
case ANSI('|', '*'):
/* VT420 sequence DECSNLS
* Set number of lines on screen
* VT420 uses VGA like hardware and can support any size in
* reasonable range (24..49 AIUI) with no default specified.
*/
compatibility(VT420);
if (esc_nargs == 1 && esc_args[0] > 0) {
request_resize(cols, def(esc_args[0], cfg.height));
deselect();
}
break;
case ANSI('|', '$'):
/* VT340/VT420 sequence DECSCPP
* Set number of columns per page
* Docs imply range is only 80 or 132, but I'll allow any.
*/
compatibility(VT340TEXT);
if (esc_nargs <= 1) {
request_resize(def(esc_args[0], cfg.width), rows);
deselect();
}
break;
case 'X': /* write N spaces w/o moving cursor */
/* XXX VTTEST says this is vt220, vt510 manual says vt100 */
compatibility(ANSIMIN);
{
int n = def(esc_args[0], 1);
pos cursplus;
unsigned long *p = cpos;
if (n > cols - curs.x)
n = cols - curs.x;
cursplus = curs;
cursplus.x += n;
check_selection(curs, cursplus);
while (n--)
*p++ = erase_char;
seen_disp_event = TRUE;
}
break;
case 'x': /* report terminal characteristics */
compatibility(VT100);
{
char buf[32];
int i = def(esc_args[0], 0);
if (i == 0 || i == 1) {
strcpy(buf, "\033[2;1;1;112;112;1;0x");
buf[2] += i;
ldisc_send(buf, 20, 0);
}
}
break;
case 'Z': /* BackTab for xterm */
compatibility(OTHER);
{
int i = def(esc_args[0], 1);
pos old_curs = curs;
for(;i>0 && curs.x>0; i--) {
do {
curs.x--;
} while (curs.x >0 && !tabs[curs.x]);
}
fix_cpos;
check_selection(old_curs, curs);
}
break;
case ANSI('L', '='):
compatibility(OTHER);
use_bce = (esc_args[0] <= 0);
erase_char = ERASE_CHAR;
if (use_bce)
erase_char = (' ' | ATTR_ASCII |
(curr_attr &
(ATTR_FGMASK | ATTR_BGMASK)));
break;
case ANSI('E', '='):
compatibility(OTHER);
blink_is_real = (esc_args[0] >= 1);
break;
case ANSI('p', '"'):
/* Allow the host to make this emulator a 'perfect' VT102.
* This first appeared in the VT220, but we do need to get
* back to PuTTY mode so I won't check it.
*
* The arg in 40..42,50 are a PuTTY extension.
* The 2nd arg, 8bit vs 7bit is not checked.
*
* Setting VT102 mode should also change the Fkeys to
* generate PF* codes as a real VT102 has no Fkeys.
* The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
* send nothing.
*
* Note ESC c will NOT change this!
*/
switch (esc_args[0]) {
case 61:
compatibility_level &= ~TM_VTXXX;
compatibility_level |= TM_VT102;
break;
case 62:
compatibility_level &= ~TM_VTXXX;
compatibility_level |= TM_VT220;
break;
default:
if (esc_args[0] > 60 && esc_args[0] < 70)
compatibility_level |= TM_VTXXX;
break;
case 40:
compatibility_level &= TM_VTXXX;
break;
case 41:
compatibility_level = TM_PUTTY;
break;
case 42:
compatibility_level = TM_SCOANSI;
break;
case ARG_DEFAULT:
compatibility_level = TM_PUTTY;
break;
case 50:
break;
}
/* Change the response to CSI c */
if (esc_args[0] == 50) {
int i;
char lbuf[64];
strcpy(id_string, "\033[?");
for (i = 1; i < esc_nargs; i++) {
if (i != 1)
strcat(id_string, ";");
sprintf(lbuf, "%d", esc_args[i]);
strcat(id_string, lbuf);
}
strcat(id_string, "c");
}
#if 0
/* Is this a good idea ?
* Well we should do a soft reset at this point ...
*/
if (!has_compat(VT420) && has_compat(VT100)) {
if (reset_132)
request_resize(132, 24);
else
request_resize(80, 24);
}
#endif
break;
}
break;
case SEEN_OSC:
osc_w = FALSE;
switch (c) {
case 'P': /* Linux palette sequence */
termstate = SEEN_OSC_P;
osc_strlen = 0;
break;
case 'R': /* Linux palette reset */
palette_reset();
term_invalidate();
termstate = TOPLEVEL;
break;
case 'W': /* word-set */
termstate = SEEN_OSC_W;
osc_w = TRUE;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
esc_args[0] = 10 * esc_args[0] + c - '0';
break;
case 'L':
/*
* Grotty hack to support xterm and DECterm title
* sequences concurrently.
*/
if (esc_args[0] == 2) {
esc_args[0] = 1;
break;
}
/* else fall through */
default:
termstate = OSC_STRING;
osc_strlen = 0;
}
break;
case OSC_STRING:
/*
* This OSC stuff is EVIL. It takes just one character to get into
* sysline mode and it's not initially obvious how to get out.
* So I've added CR and LF as string aborts.
* This shouldn't effect compatibility as I believe embedded
* control characters are supposed to be interpreted (maybe?)
* and they don't display anything useful anyway.
*
* -- RDB
*/
if (c == '\n' || c == '\r') {
termstate = TOPLEVEL;
} else if (c == 0234 || c == '\007') {
/*
* These characters terminate the string; ST and BEL
* terminate the sequence and trigger instant
* processing of it, whereas ESC goes back to SEEN_ESC
* mode unless it is followed by \, in which case it is
* synonymous with ST in the first place.
*/
do_osc();
termstate = TOPLEVEL;
} else if (c == '\033')
termstate = OSC_MAYBE_ST;
else if (osc_strlen < OSC_STR_MAX)
osc_string[osc_strlen++] = c;
break;
case SEEN_OSC_P:
{
int max = (osc_strlen == 0 ? 21 : 16);
int val;
if (c >= '0' && c <= '9')
val = c - '0';
else if (c >= 'A' && c <= 'A' + max - 10)
val = c - 'A' + 10;
else if (c >= 'a' && c <= 'a' + max - 10)
val = c - 'a' + 10;
else {
termstate = TOPLEVEL;
break;
}
osc_string[osc_strlen++] = val;
if (osc_strlen >= 7) {
palette_set(osc_string[0],
osc_string[1] * 16 + osc_string[2],
osc_string[3] * 16 + osc_string[4],
osc_string[5] * 16 + osc_string[6]);
term_invalidate();
termstate = TOPLEVEL;
}
}
break;
case SEEN_OSC_W:
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
esc_args[0] = 10 * esc_args[0] + c - '0';
break;
default:
termstate = OSC_STRING;
osc_strlen = 0;
}
break;
case VT52_ESC:
termstate = TOPLEVEL;
seen_disp_event = TRUE;
switch (c) {
case 'A':
move(curs.x, curs.y - 1, 1);
break;
case 'B':
move(curs.x, curs.y + 1, 1);
break;
case 'C':
move(curs.x + 1, curs.y, 1);
break;
case 'D':
move(curs.x - 1, curs.y, 1);
break;
/*
* From the VT100 Manual
* NOTE: The special graphics characters in the VT100
* are different from those in the VT52
*
* From VT102 manual:
* 137 _ Blank - Same
* 140 ` Reserved - Humm.
* 141 a Solid rectangle - Similar
* 142 b 1/ - Top half of fraction for the
* 143 c 3/ - subscript numbers below.
* 144 d 5/
* 145 e 7/
* 146 f Degrees - Same
* 147 g Plus or minus - Same
* 150 h Right arrow
* 151 i Ellipsis (dots)
* 152 j Divide by
* 153 k Down arrow
* 154 l Bar at scan 0
* 155 m Bar at scan 1
* 156 n Bar at scan 2
* 157 o Bar at scan 3 - Similar
* 160 p Bar at scan 4 - Similar
* 161 q Bar at scan 5 - Similar
* 162 r Bar at scan 6 - Same
* 163 s Bar at scan 7 - Similar
* 164 t Subscript 0
* 165 u Subscript 1
* 166 v Subscript 2
* 167 w Subscript 3
* 170 x Subscript 4
* 171 y Subscript 5
* 172 z Subscript 6
* 173 { Subscript 7
* 174 | Subscript 8
* 175 } Subscript 9
* 176 ~ Paragraph
*
*/
case 'F':
cset_attr[cset = 0] = ATTR_LINEDRW;
break;
case 'G':
cset_attr[cset = 0] = ATTR_ASCII;
break;
case 'H':
move(0, 0, 0);
break;
case 'I':
if (curs.y == 0)
scroll(0, rows - 1, -1, TRUE);
else if (curs.y > 0)
curs.y--;
fix_cpos;
wrapnext = FALSE;
break;
case 'J':
erase_lots(FALSE, FALSE, TRUE);
disptop = 0;
break;
case 'K':
erase_lots(TRUE, FALSE, TRUE);
break;
#if 0
case 'V':
/* XXX Print cursor line */
break;
case 'W':
/* XXX Start controller mode */
break;
case 'X':
/* XXX Stop controller mode */
break;
#endif
case 'Y':
termstate = VT52_Y1;
break;
case 'Z':
ldisc_send("\033/Z", 3, 0);
break;
case '=':
app_keypad_keys = TRUE;
break;
case '>':
app_keypad_keys = FALSE;
break;
case '<':
/* XXX This should switch to VT100 mode not current or default
* VT mode. But this will only have effect in a VT220+
* emulation.
*/
vt52_mode = FALSE;
blink_is_real = cfg.blinktext;
break;
#if 0
case '^':
/* XXX Enter auto print mode */
break;
case '_':
/* XXX Exit auto print mode */
break;
case ']':
/* XXX Print screen */
break;
#endif
#ifdef VT52_PLUS
case 'E':
/* compatibility(ATARI) */
move(0, 0, 0);
erase_lots(FALSE, FALSE, TRUE);
disptop = 0;
break;
case 'L':
/* compatibility(ATARI) */
if (curs.y <= marg_b)
scroll(curs.y, marg_b, -1, FALSE);
break;
case 'M':
/* compatibility(ATARI) */
if (curs.y <= marg_b)
scroll(curs.y, marg_b, 1, TRUE);
break;
case 'b':
/* compatibility(ATARI) */
termstate = VT52_FG;
break;
case 'c':
/* compatibility(ATARI) */
termstate = VT52_BG;
break;
case 'd':
/* compatibility(ATARI) */
erase_lots(FALSE, TRUE, FALSE);
disptop = 0;
break;
case 'e':
/* compatibility(ATARI) */
cursor_on = TRUE;
break;
case 'f':
/* compatibility(ATARI) */
cursor_on = FALSE;
break;
/* case 'j': Save cursor position - broken on ST */
/* case 'k': Restore cursor position */
case 'l':
/* compatibility(ATARI) */
erase_lots(TRUE, TRUE, TRUE);
curs.x = 0;
wrapnext = FALSE;
fix_cpos;
break;
case 'o':
/* compatibility(ATARI) */
erase_lots(TRUE, TRUE, FALSE);
break;
case 'p':
/* compatibility(ATARI) */
curr_attr |= ATTR_REVERSE;
break;
case 'q':
/* compatibility(ATARI) */
curr_attr &= ~ATTR_REVERSE;
break;
case 'v': /* wrap Autowrap on - Wyse style */
/* compatibility(ATARI) */
wrap = 1;
break;
case 'w': /* Autowrap off */
/* compatibility(ATARI) */
wrap = 0;
break;
case 'R':
/* compatibility(OTHER) */
vt52_bold = FALSE;
curr_attr = ATTR_DEFAULT;
if (use_bce)
erase_char = (' ' | ATTR_ASCII |
(curr_attr &
(ATTR_FGMASK | ATTR_BGMASK)));
break;
case 'S':
/* compatibility(VI50) */
curr_attr |= ATTR_UNDER;
break;
case 'W':
/* compatibility(VI50) */
curr_attr &= ~ATTR_UNDER;
break;
case 'U':
/* compatibility(VI50) */
vt52_bold = TRUE;
curr_attr |= ATTR_BOLD;
break;
case 'T':
/* compatibility(VI50) */
vt52_bold = FALSE;
curr_attr &= ~ATTR_BOLD;
break;
#endif
}
break;
case VT52_Y1:
termstate = VT52_Y2;
move(curs.x, c - ' ', 0);
break;
case VT52_Y2:
termstate = TOPLEVEL;
move(c - ' ', curs.y, 0);
break;
#ifdef VT52_PLUS
case VT52_FG:
termstate = TOPLEVEL;
curr_attr &= ~ATTR_FGMASK;
curr_attr &= ~ATTR_BOLD;
curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
if ((c & 0x8) || vt52_bold)
curr_attr |= ATTR_BOLD;
if (use_bce)
erase_char = (' ' | ATTR_ASCII |
(curr_attr & (ATTR_FGMASK | ATTR_BGMASK)));
break;
case VT52_BG:
termstate = TOPLEVEL;
curr_attr &= ~ATTR_BGMASK;
curr_attr &= ~ATTR_BLINK;
curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
/* Note: bold background */
if (c & 0x8)
curr_attr |= ATTR_BLINK;
if (use_bce)
erase_char = (' ' | ATTR_ASCII |
(curr_attr & (ATTR_FGMASK | ATTR_BGMASK)));
break;
#endif
default: break; /* placate gcc warning about enum use */
}
if (selstate != NO_SELECTION) {
pos cursplus = curs;
incpos(cursplus);
check_selection(curs, cursplus);
}
}
}
#if 0
/*
* Compare two lines to determine whether they are sufficiently
* alike to scroll-optimise one to the other. Return the degree of
* similarity.
*/
static int linecmp(unsigned long *a, unsigned long *b)
{
int i, n;
for (i = n = 0; i < cols; i++)
n += (*a++ == *b++);
return n;
}
#endif
/*
* Given a context, update the window. Out of paranoia, we don't
* allow WM_PAINT responses to do scrolling optimisations.
*/
static void do_paint(Context ctx, int may_optimise)
{
int i, j, our_curs_y;
unsigned long rv, cursor;
pos scrpos;
char ch[1024];
long cursor_background = ERASE_CHAR;
unsigned long ticks;
/*
* Check the visual bell state.
*/
if (in_vbell) {
ticks = GetTickCount();
if (ticks - vbell_startpoint >= VBELL_TIMEOUT)
in_vbell = FALSE;
}
rv = (!rvideo ^ !in_vbell ? ATTR_REVERSE : 0);
/* Depends on:
* screen array, disptop, scrtop,
* selection, rv,
* cfg.blinkpc, blink_is_real, tblinker,
* curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
*/
/* Has the cursor position or type changed ? */
if (cursor_on) {
if (has_focus) {
if (blinker || !cfg.blink_cur)
cursor = TATTR_ACTCURS;
else
cursor = 0;
} else
cursor = TATTR_PASCURS;
if (wrapnext)
cursor |= TATTR_RIGHTCURS;
} else
cursor = 0;
our_curs_y = curs.y - disptop;
if (dispcurs && (curstype != cursor ||
dispcurs !=
disptext + our_curs_y * (cols + 1) + curs.x)) {
if (dispcurs > disptext &&
(*dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
dispcurs[-1] |= ATTR_INVALID;
if ( (dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
dispcurs[1] |= ATTR_INVALID;
*dispcurs |= ATTR_INVALID;
curstype = 0;
}
dispcurs = NULL;
/* The normal screen data */
for (i = 0; i < rows; i++) {
unsigned long *ldata;
int lattr;
int idx, dirty_line, dirty_run, selected;
unsigned long attr = 0;
int updated_line = 0;
int start = 0;
int ccount = 0;
int last_run_dirty = 0;
scrpos.y = i + disptop;
ldata = lineptr(scrpos.y);
lattr = (ldata[cols] & LATTR_MODE);
idx = i * (cols + 1);
dirty_run = dirty_line = (ldata[cols] != disptext[idx + cols]);
disptext[idx + cols] = ldata[cols];
for (j = 0; j < cols; j++, idx++) {
unsigned long tattr, tchar;
unsigned long *d = ldata + j;
int break_run;
scrpos.x = j;
tchar = (*d & (CHAR_MASK | CSET_MASK));
tattr = (*d & (ATTR_MASK ^ CSET_MASK));
switch (tchar & CSET_MASK) {
case ATTR_ASCII:
tchar = unitab_line[tchar & 0xFF];
break;
case ATTR_LINEDRW:
tchar = unitab_xterm[tchar & 0xFF];
break;
case ATTR_SCOACS:
tchar = unitab_scoacs[tchar&0xFF];
break;
}
tattr |= (tchar & CSET_MASK);
tchar &= CHAR_MASK;
if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
tattr |= ATTR_WIDE;
/* Video reversing things */
if (seltype == LEXICOGRAPHIC)
selected = posle(selstart, scrpos) && poslt(scrpos, selend);
else
selected = posPle(selstart, scrpos) && posPlt(scrpos, selend);
tattr = (tattr ^ rv
^ (selected ? ATTR_REVERSE : 0));
/* 'Real' blinking ? */
if (blink_is_real && (tattr & ATTR_BLINK)) {
if (has_focus && tblinker) {
tchar = ' ';
tattr &= ~CSET_MASK;
tattr |= ATTR_ACP;
}
tattr &= ~ATTR_BLINK;
}
/*
* Check the font we'll _probably_ be using to see if
* the character is wide when we don't want it to be.
*/
if ((tchar | tattr) != (disptext[idx]& ~ATTR_NARROW)) {
if ((tattr & ATTR_WIDE) == 0 &&
CharWidth(ctx, (tchar | tattr) & 0xFFFF) == 2)
tattr |= ATTR_NARROW;
} else if (disptext[idx]&ATTR_NARROW)
tattr |= ATTR_NARROW;
/* Cursor here ? Save the 'background' */
if (i == our_curs_y && j == curs.x) {
cursor_background = tattr | tchar;
dispcurs = disptext + idx;
}
if ((disptext[idx] ^ tattr) & ATTR_WIDE)
dirty_line = TRUE;
break_run = (tattr != attr || j - start >= sizeof(ch));
/* Special hack for VT100 Linedraw glyphs */
if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
&& tchar <= 0xBD) break_run = TRUE;
if (!dbcs_screenfont && !dirty_line) {
if ((tchar | tattr) == disptext[idx])
break_run = TRUE;
else if (!dirty_run && ccount == 1)
break_run = TRUE;
}
if (break_run) {
if ((dirty_run || last_run_dirty) && ccount > 0) {
do_text(ctx, start, i, ch, ccount, attr, lattr);
updated_line = 1;
}
start = j;
ccount = 0;
attr = tattr;
if (dbcs_screenfont)
last_run_dirty = dirty_run;
dirty_run = dirty_line;
}
if ((tchar | tattr) != disptext[idx])
dirty_run = TRUE;
ch[ccount++] = (char) tchar;
disptext[idx] = tchar | tattr;
/* If it's a wide char step along to the next one. */
if (tattr & ATTR_WIDE) {
if (++j < cols) {
idx++;
d++;
/* Cursor is here ? Ouch! */
if (i == our_curs_y && j == curs.x) {
cursor_background = *d;
dispcurs = disptext + idx;
}
if (disptext[idx] != *d)
dirty_run = TRUE;
disptext[idx] = *d;
}
}
}
if (dirty_run && ccount > 0) {
do_text(ctx, start, i, ch, ccount, attr, lattr);
updated_line = 1;
}
/* Cursor on this line ? (and changed) */
if (i == our_curs_y && (curstype != cursor || updated_line)) {
ch[0] = (char) (cursor_background & CHAR_MASK);
attr = (cursor_background & ATTR_MASK) | cursor;
do_cursor(ctx, curs.x, i, ch, 1, attr, lattr);
curstype = cursor;
}
}
}
/*
* Flick the switch that says if blinking things should be shown or hidden.
*/
void term_blink(int flg)
{
static long last_blink = 0;
static long last_tblink = 0;
long now, blink_diff;
now = GetTickCount();
blink_diff = now - last_tblink;
/* Make sure the text blinks no more than 2Hz */
if (blink_diff < 0 || blink_diff > 450) {
last_tblink = now;
tblinker = !tblinker;
}
if (flg) {
blinker = 1;
last_blink = now;
return;
}
blink_diff = now - last_blink;
/* Make sure the cursor blinks no faster than GetCaretBlinkTime() */
if (blink_diff >= 0 && blink_diff < (long) GetCaretBlinkTime())
return;
last_blink = now;
blinker = !blinker;
}
/*
* Invalidate the whole screen so it will be repainted in full.
*/
void term_invalidate(void)
{
int i;
for (i = 0; i < rows * (cols + 1); i++)
disptext[i] = ATTR_INVALID;
}
/*
* Paint the window in response to a WM_PAINT message.
*/
void term_paint(Context ctx, int left, int top, int right, int bottom)
{
int i, j;
if (left < 0) left = 0;
if (top < 0) top = 0;
if (right >= cols) right = cols-1;
if (bottom >= rows) bottom = rows-1;
for (i = top; i <= bottom && i < rows; i++) {
if ((disptext[i * (cols + 1) + cols] & LATTR_MODE) == LATTR_NORM)
for (j = left; j <= right && j < cols; j++)
disptext[i * (cols + 1) + j] = ATTR_INVALID;
else
for (j = left / 2; j <= right / 2 + 1 && j < cols; j++)
disptext[i * (cols + 1) + j] = ATTR_INVALID;
}
/* This should happen soon enough, also for some reason it sometimes
* fails to actually do anything when re-sizing ... painting the wrong
* window perhaps ?
*/
if (alt_pressed)
do_paint (ctx, FALSE);
}
/*
* Attempt to scroll the scrollback. The second parameter gives the
* position we want to scroll to; the first is +1 to denote that
* this position is relative to the beginning of the scrollback, -1
* to denote it is relative to the end, and 0 to denote that it is
* relative to the current position.
*/
void term_scroll(int rel, int where)
{
int sbtop = -count234(scrollback);
disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : disptop) + where;
if (disptop < sbtop)
disptop = sbtop;
if (disptop > 0)
disptop = 0;
update_sbar();
term_update();
}
static void clipme(pos top, pos bottom, int rect)
{
wchar_t *workbuf;
wchar_t *wbptr; /* where next char goes within workbuf */
int old_top_x;
int wblen = 0; /* workbuf len */
int buflen; /* amount of memory allocated to workbuf */
buflen = 5120; /* Default size */
workbuf = smalloc(buflen * sizeof(wchar_t));
wbptr = workbuf; /* start filling here */
old_top_x = top.x; /* needed for rect==1 */
while (poslt(top, bottom)) {
int nl = FALSE;
unsigned long *ldata = lineptr(top.y);
pos nlpos;
/*
* nlpos will point at the maximum position on this line we
* should copy up to. So we start it at the end of the
* line...
*/
nlpos.y = top.y;
nlpos.x = cols;
/*
* ... move it backwards if there's unused space at the end
* of the line (and also set `nl' if this is the case,
* because in normal selection mode this means we need a
* newline at the end)...
*/
if (!(ldata[cols] & LATTR_WRAPPED)) {
while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
(DIRECT_CHAR(ldata[nlpos.x - 1]) &&
(ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
&& poslt(top, nlpos))
decpos(nlpos);
if (poslt(nlpos, bottom))
nl = TRUE;
}
/*
* ... and then clip it to the terminal x coordinate if
* we're doing rectangular selection. (In this case we
* still did the above, so that copying e.g. the right-hand
* column from a table doesn't fill with spaces on the
* right.)
*/
if (rect) {
if (nlpos.x > bottom.x)
nlpos.x = bottom.x;
nl = (top.y < bottom.y);
}
while (poslt(top, bottom) && poslt(top, nlpos)) {
#if 0
char cbuf[16], *p;
sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
#else
wchar_t cbuf[16], *p;
int uc = (ldata[top.x] & 0xFFFF);
int set, c;
if (uc == UCSWIDE) {
top.x++;
continue;
}
switch (uc & CSET_MASK) {
case ATTR_LINEDRW:
if (!cfg.rawcnp) {
uc = unitab_xterm[uc & 0xFF];
break;
}
case ATTR_ASCII:
uc = unitab_line[uc & 0xFF];
break;
case ATTR_SCOACS:
uc = unitab_scoacs[uc&0xFF];
break;
}
switch (uc & CSET_MASK) {
case ATTR_ACP:
uc = unitab_font[uc & 0xFF];
break;
case ATTR_OEMCP:
uc = unitab_oemcp[uc & 0xFF];
break;
}
set = (uc & CSET_MASK);
c = (uc & CHAR_MASK);
cbuf[0] = uc;
cbuf[1] = 0;
if (DIRECT_FONT(uc)) {
if (c >= ' ' && c != 0x7F) {
unsigned char buf[4];
WCHAR wbuf[4];
int rv;
if (IsDBCSLeadByteEx(font_codepage, (BYTE) c)) {
buf[0] = c;
buf[1] = (unsigned char) ldata[top.x + 1];
rv = MultiByteToWideChar(font_codepage,
0, buf, 2, wbuf, 4);
top.x++;
} else {
buf[0] = c;
rv = MultiByteToWideChar(font_codepage,
0, buf, 1, wbuf, 4);
}
if (rv > 0) {
memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
cbuf[rv] = 0;
}
}
}
#endif
for (p = cbuf; *p; p++) {
/* Enough overhead for trailing NL and nul */
if (wblen >= buflen - 16) {
workbuf =
srealloc(workbuf,
sizeof(wchar_t) * (buflen += 100));
wbptr = workbuf + wblen;
}
wblen++;
*wbptr++ = *p;
}
top.x++;
}
if (nl) {
int i;
for (i = 0; i < sel_nl_sz; i++) {
wblen++;
*wbptr++ = sel_nl[i];
}
}
top.y++;
top.x = rect ? old_top_x : 0;
}
wblen++;
*wbptr++ = 0;
write_clip(workbuf, wblen, FALSE); /* transfer to clipboard */
if (buflen > 0) /* indicates we allocated this buffer */
sfree(workbuf);
}
void term_copyall(void)
{
pos top;
top.y = -count234(scrollback);
top.x = 0;
clipme(top, curs, 0);
}
/*
* The wordness array is mainly for deciding the disposition of the US-ASCII
* characters.
*/
static int wordtype(int uc)
{
static struct {
int start, end, ctype;
} *wptr, ucs_words[] = {
{
128, 160, 0}, {
161, 191, 1}, {
215, 215, 1}, {
247, 247, 1}, {
0x037e, 0x037e, 1}, /* Greek question mark */
{
0x0387, 0x0387, 1}, /* Greek ano teleia */
{
0x055a, 0x055f, 1}, /* Armenian punctuation */
{
0x0589, 0x0589, 1}, /* Armenian full stop */
{
0x0700, 0x070d, 1}, /* Syriac punctuation */
{
0x104a, 0x104f, 1}, /* Myanmar punctuation */
{
0x10fb, 0x10fb, 1}, /* Georgian punctuation */
{
0x1361, 0x1368, 1}, /* Ethiopic punctuation */
{
0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
{
0x17d4, 0x17dc, 1}, /* Khmer punctuation */
{
0x1800, 0x180a, 1}, /* Mongolian punctuation */
{
0x2000, 0x200a, 0}, /* Various spaces */
{
0x2070, 0x207f, 2}, /* superscript */
{
0x2080, 0x208f, 2}, /* subscript */
{
0x200b, 0x27ff, 1}, /* punctuation and symbols */
{
0x3000, 0x3000, 0}, /* ideographic space */
{
0x3001, 0x3020, 1}, /* ideographic punctuation */
{
0x303f, 0x309f, 3}, /* Hiragana */
{
0x30a0, 0x30ff, 3}, /* Katakana */
{
0x3300, 0x9fff, 3}, /* CJK Ideographs */
{
0xac00, 0xd7a3, 3}, /* Hangul Syllables */
{
0xf900, 0xfaff, 3}, /* CJK Ideographs */
{
0xfe30, 0xfe6b, 1}, /* punctuation forms */
{
0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
{
0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
{
0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
{
0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
{
0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
{
0, 0, 0}
};
uc &= (CSET_MASK | CHAR_MASK);
switch (uc & CSET_MASK) {
case ATTR_LINEDRW:
uc = unitab_xterm[uc & 0xFF];
break;
case ATTR_ASCII:
uc = unitab_line[uc & 0xFF];
break;
case ATTR_SCOACS:
uc = unitab_scoacs[uc&0xFF];
break;
}
switch (uc & CSET_MASK) {
case ATTR_ACP:
uc = unitab_font[uc & 0xFF];
break;
case ATTR_OEMCP:
uc = unitab_oemcp[uc & 0xFF];
break;
}
/* For DBCS font's I can't do anything usefull. Even this will sometimes
* fail as there's such a thing as a double width space. :-(
*/
if (dbcs_screenfont && font_codepage == line_codepage)
return (uc != ' ');
if (uc < 0x80)
return wordness[uc];
for (wptr = ucs_words; wptr->start; wptr++) {
if (uc >= wptr->start && uc <= wptr->end)
return wptr->ctype;
}
return 2;
}
/*
* Spread the selection outwards according to the selection mode.
*/
static pos sel_spread_half(pos p, int dir)
{
unsigned long *ldata;
short wvalue;
int topy = -count234(scrollback);
ldata = lineptr(p.y);
switch (selmode) {
case SM_CHAR:
/*
* In this mode, every character is a separate unit, except
* for runs of spaces at the end of a non-wrapping line.
*/
if (!(ldata[cols] & LATTR_WRAPPED)) {
unsigned long *q = ldata + cols;
while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
q--;
if (q == ldata + cols)
q--;
if (p.x >= q - ldata)
p.x = (dir == -1 ? q - ldata : cols - 1);
}
break;
case SM_WORD:
/*
* In this mode, the units are maximal runs of characters
* whose `wordness' has the same value.
*/
wvalue = wordtype(ldata[p.x]);
if (dir == +1) {
while (1) {
if (p.x < cols-1) {
if (wordtype(ldata[p.x + 1]) == wvalue)
p.x++;
else
break;
} else {
if (ldata[cols] & LATTR_WRAPPED) {
unsigned long *ldata2;
ldata2 = lineptr(p.y+1);
if (wordtype(ldata2[0]) == wvalue) {
p.x = 0;
p.y++;
ldata = ldata2;
} else
break;
} else
break;
}
}
} else {
while (1) {
if (p.x > 0) {
if (wordtype(ldata[p.x - 1]) == wvalue)
p.x--;
else
break;
} else {
unsigned long *ldata2;
if (p.y <= topy)
break;
ldata2 = lineptr(p.y-1);
if ((ldata2[cols] & LATTR_WRAPPED) &&
wordtype(ldata2[cols-1]) == wvalue) {
p.x = cols-1;
p.y--;
ldata = ldata2;
} else
break;
}
}
}
break;
case SM_LINE:
/*
* In this mode, every line is a unit.
*/
p.x = (dir == -1 ? 0 : cols - 1);
break;
}
return p;
}
static void sel_spread(void)
{
if (seltype == LEXICOGRAPHIC) {
selstart = sel_spread_half(selstart, -1);
decpos(selend);
selend = sel_spread_half(selend, +1);
incpos(selend);
}
}
void term_do_paste(void)
{
wchar_t *data;
int len;
get_clip(&data, &len);
if (data) {
wchar_t *p, *q;
if (paste_buffer)
sfree(paste_buffer);
paste_pos = paste_hold = paste_len = 0;
paste_buffer = smalloc(len * sizeof(wchar_t));
p = q = data;
while (p < data + len) {
while (p < data + len &&
!(p <= data + len - sel_nl_sz &&
!memcmp(p, sel_nl, sizeof(sel_nl))))
p++;
{
int i;
for (i = 0; i < p - q; i++) {
paste_buffer[paste_len++] = q[i];
}
}
if (p <= data + len - sel_nl_sz &&
!memcmp(p, sel_nl, sizeof(sel_nl))) {
paste_buffer[paste_len++] = '\r';
p += sel_nl_sz;
}
q = p;
}
/* Assume a small paste will be OK in one go. */
if (paste_len < 256) {
luni_send(paste_buffer, paste_len, 0);
if (paste_buffer)
sfree(paste_buffer);
paste_buffer = 0;
paste_pos = paste_hold = paste_len = 0;
}
}
get_clip(NULL, NULL);
}
void term_mouse(Mouse_Button b, Mouse_Action a, int x, int y,
int shift, int ctrl, int alt)
{
pos selpoint;
unsigned long *ldata;
int raw_mouse = xterm_mouse && !(cfg.mouse_override && shift);
int default_seltype;
if (y < 0) {
y = 0;
if (a == MA_DRAG && !raw_mouse)
term_scroll(0, -1);
}
if (y >= rows) {
y = rows - 1;
if (a == MA_DRAG && !raw_mouse)
term_scroll(0, +1);
}
if (x < 0) {
if (y > 0) {
x = cols - 1;
y--;
} else
x = 0;
}
if (x >= cols)
x = cols - 1;
selpoint.y = y + disptop;
selpoint.x = x;
ldata = lineptr(selpoint.y);
if ((ldata[cols] & LATTR_MODE) != LATTR_NORM)
selpoint.x /= 2;
if (raw_mouse) {
int encstate = 0, r, c;
char abuf[16];
static int is_down = 0;
switch (b) {
case MBT_LEFT:
encstate = 0x20; /* left button down */
break;
case MBT_MIDDLE:
encstate = 0x21;
break;
case MBT_RIGHT:
encstate = 0x22;
break;
case MBT_WHEEL_UP:
encstate = 0x60;
break;
case MBT_WHEEL_DOWN:
encstate = 0x61;
break;
default: break; /* placate gcc warning about enum use */
}
switch (a) {
case MA_DRAG:
if (xterm_mouse == 1)
return;
encstate += 0x20;
break;
case MA_RELEASE:
encstate = 0x23;
is_down = 0;
break;
case MA_CLICK:
if (is_down == b)
return;
is_down = b;
break;
default: break; /* placate gcc warning about enum use */
}
if (shift)
encstate += 0x04;
if (ctrl)
encstate += 0x10;
r = y + 33;
c = x + 33;
sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
ldisc_send(abuf, 6, 0);
return;
}
b = translate_button(b);
/*
* Set the selection type (rectangular or normal) at the start
* of a selection attempt, from the state of Alt.
*/
if (!alt ^ !cfg.rect_select)
default_seltype = RECTANGULAR;
else
default_seltype = LEXICOGRAPHIC;
if (selstate == NO_SELECTION) {
seltype = default_seltype;
}
if (b == MBT_SELECT && a == MA_CLICK) {
deselect();
selstate = ABOUT_TO;
seltype = default_seltype;
selanchor = selpoint;
selmode = SM_CHAR;
} else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
deselect();
selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
selstate = DRAGGING;
selstart = selanchor = selpoint;
selend = selstart;
incpos(selend);
sel_spread();
} else if ((b == MBT_SELECT && a == MA_DRAG) ||
(b == MBT_EXTEND && a != MA_RELEASE)) {
if (selstate == ABOUT_TO && poseq(selanchor, selpoint))
return;
if (b == MBT_EXTEND && a != MA_DRAG && selstate == SELECTED) {
if (seltype == LEXICOGRAPHIC) {
/*
* For normal selection, we extend by moving
* whichever end of the current selection is closer
* to the mouse.
*/
if (posdiff(selpoint, selstart) <
posdiff(selend, selstart) / 2) {
selanchor = selend;
decpos(selanchor);
} else {
selanchor = selstart;
}
} else {
/*
* For rectangular selection, we have a choice of
* _four_ places to put selanchor and selpoint: the
* four corners of the selection.
*/
if (2*selpoint.x < selstart.x + selend.x)
selanchor.x = selend.x-1;
else
selanchor.x = selstart.x;
if (2*selpoint.y < selstart.y + selend.y)
selanchor.y = selend.y;
else
selanchor.y = selstart.y;
}
selstate = DRAGGING;
}
if (selstate != ABOUT_TO && selstate != DRAGGING)
selanchor = selpoint;
selstate = DRAGGING;
if (seltype == LEXICOGRAPHIC) {
/*
* For normal selection, we set (selstart,selend) to
* (selpoint,selanchor) in some order.
*/
if (poslt(selpoint, selanchor)) {
selstart = selpoint;
selend = selanchor;
incpos(selend);
} else {
selstart = selanchor;
selend = selpoint;
incpos(selend);
}
} else {
/*
* For rectangular selection, we may need to
* interchange x and y coordinates (if the user has
* dragged in the -x and +y directions, or vice versa).
*/
selstart.x = min(selanchor.x, selpoint.x);
selend.x = 1+max(selanchor.x, selpoint.x);
selstart.y = min(selanchor.y, selpoint.y);
selend.y = max(selanchor.y, selpoint.y);
}
sel_spread();
} else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
if (selstate == DRAGGING) {
/*
* We've completed a selection. We now transfer the
* data to the clipboard.
*/
clipme(selstart, selend, (seltype == RECTANGULAR));
selstate = SELECTED;
} else
selstate = NO_SELECTION;
} else if (b == MBT_PASTE
&& (a == MA_CLICK || a == MA_2CLK || a == MA_3CLK)) {
term_do_paste();
}
term_update();
}
void term_nopaste()
{
if (paste_len == 0)
return;
sfree(paste_buffer);
paste_buffer = 0;
paste_len = 0;
}
void term_paste()
{
static long last_paste = 0;
long now, paste_diff;
if (paste_len == 0)
return;
/* Don't wait forever to paste */
if (paste_hold) {
now = GetTickCount();
paste_diff = now - last_paste;
if (paste_diff >= 0 && paste_diff < 450)
return;
}
paste_hold = 0;
while (paste_pos < paste_len) {
int n = 0;
while (n + paste_pos < paste_len) {
if (paste_buffer[paste_pos + n++] == '\r')
break;
}
luni_send(paste_buffer + paste_pos, n, 0);
paste_pos += n;
if (paste_pos < paste_len) {
paste_hold = 1;
return;
}
}
sfree(paste_buffer);
paste_buffer = 0;
paste_len = 0;
}
static void deselect(void)
{
selstate = NO_SELECTION;
selstart.x = selstart.y = selend.x = selend.y = 0;
}
void term_deselect(void)
{
deselect();
term_update();
}
int term_ldisc(int option)
{
if (option == LD_ECHO)
return term_echoing;
if (option == LD_EDIT)
return term_editing;
return FALSE;
}
/*
* from_backend(), to get data from the backend for the terminal.
*/
int from_backend(int is_stderr, char *data, int len)
{
bufchain_add(&inbuf, data, len);
/*
* term_out() always completely empties inbuf. Therefore,
* there's no reason at all to return anything other than zero
* from this function, because there _can't_ be a question of
* the remote side needing to wait until term_out() has cleared
* a backlog.
*
* This is a slightly suboptimal way to deal with SSH2 - in
* principle, the window mechanism would allow us to continue
* to accept data on forwarded ports and X connections even
* while the terminal processing was going slowly - but we
* can't do the 100% right thing without moving the terminal
* processing into a separate thread, and that might hurt
* portability. So we manage stdout buffering the old SSH1 way:
* if the terminal processing goes slowly, the whole SSH
* connection stops accepting data until it's ready.
*
* In practice, I can't imagine this causing serious trouble.
*/
return 0;
}
/*
* Log session traffic.
*/
void logtraffic(unsigned char c, int logmode)
{
if (cfg.logtype > 0) {
if (cfg.logtype == logmode) {
/* deferred open file from pgm start? */
if (!lgfp)
logfopen();
if (lgfp)
fputc(c, lgfp);
}
}
}
void settimstr(char *ta, int no_sec);
char *subslfcode(char *dest, char *src, char *dstrt);
char *stpncpy(char *dst, const char *src, size_t maxlen);
char timdatbuf[20];
char currlogfilename[FILENAME_MAX];
/* open log file append/overwrite mode */
void logfopen(void)
{
char buf[256];
time_t t;
struct tm tm;
char writemod[4];
if (!cfg.logtype)
return;
sprintf(writemod, "wb"); /* default to rewrite */
time(&t);
tm = *localtime(&t);
/* substitute special codes in file name */
xlatlognam(currlogfilename,cfg.logfilename,cfg.host, &tm);
lgfp = fopen(currlogfilename, "r"); /* file already present? */
if (lgfp) {
int i;
fclose(lgfp);
i = askappend(currlogfilename);
if (i == 1)
writemod[0] = 'a'; /* set append mode */
else if (i == 0) { /* cancelled */
lgfp = NULL;
cfg.logtype = 0; /* disable logging */
return;
}
}
lgfp = fopen(currlogfilename, writemod);
if (lgfp) { /* enter into event log */
sprintf(buf, "%s session log (%s mode) to file : ",
(writemod[0] == 'a') ? "Appending" : "Writing new",
(cfg.logtype == LGTYP_ASCII ? "ASCII" :
cfg.logtype == LGTYP_DEBUG ? "raw" : "<ukwn>"));
/* Make sure we do not exceed the output buffer size */
strncat(buf, currlogfilename, 128);
buf[strlen(buf)] = '\0';
logevent(buf);
/* --- write header line into log file */
fputs("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp);
strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm);
fputs(buf, lgfp);
fputs(" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp);
}
}
void logfclose(void)
{
if (lgfp) {
fclose(lgfp);
lgfp = NULL;
}
}
/*
* translate format codes into time/date strings
* and insert them into log file name
*
* "&Y":YYYY "&m":MM "&d":DD "&T":hhmm "&h":<hostname> "&&":&
*/
static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm) {
char buf[10], *bufp;
int size;
char *ds = d; /* save start pos. */
int len = FILENAME_MAX-1;
while (*s) {
/* Let (bufp, len) be the string to append. */
bufp = buf; /* don't usually override this */
if (*s == '&') {
char c;
s++;
if (*s) switch (c = *s++, tolower(c)) {
case 'y':
size = strftime(buf, sizeof(buf), "%Y", tm);
break;
case 'm':
size = strftime(buf, sizeof(buf), "%m", tm);
break;
case 'd':
size = strftime(buf, sizeof(buf), "%d", tm);
break;
case 't':
size = strftime(buf, sizeof(buf), "%H%M%S", tm);
break;
case 'h':
bufp = hostname;
size = strlen(bufp);
break;
default:
buf[0] = '&';
size = 1;
if (c != '&')
buf[size++] = c;
}
} else {
buf[0] = *s++;
size = 1;
}
if (size > len)
size = len;
memcpy(d, bufp, size);
d += size;
len -= size;
}
*d = '\0';
}
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку