forked from gnachman/iTerm2
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VT100Terminal.m
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VT100Terminal.m
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// -*- mode:objc -*-
// $Id: VT100Terminal.m,v 1.136 2008-10-21 05:43:52 yfabian Exp $
//
/*
** VT100Terminal.m
**
** Copyright (c) 2002, 2003
**
** Author: Fabian, Ujwal S. Setlur
** Initial code by Kiichi Kusama
**
** Project: iTerm
**
** Description: Implements the model class VT100 terminal.
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#import "VT100Terminal.h"
#import "PTYSession.h"
#import "VT100Screen.h"
#import "NSStringITerm.h"
#import "iTermApplicationDelegate.h"
#import "ITAddressBookMgr.h"
#import "PTYTab.h"
#import "PseudoTerminal.h"
#import "WindowControllerInterface.h"
#include <term.h>
#include <wchar.h>
#define DEBUG_ALLOC 0
#define LOG_UNKNOWN 0
#define STANDARD_STREAM_SIZE 100000
#define MAX_BUFFER_LENGTH 1024
@implementation VT100Terminal
#define iscontrol(c) ((c) <= 0x1f)
/*
Traditional Chinese (Big5)
1st 0xa1-0xfe
2nd 0x40-0x7e || 0xa1-0xfe
Simplifed Chinese (EUC_CN)
1st 0x81-0xfe
2nd 0x40-0x7e || 0x80-0xfe
*/
#define iseuccn(c) ((c) >= 0x81 && (c) <= 0xfe)
#define isbig5(c) ((c) >= 0xa1 && (c) <= 0xfe)
#define issjiskanji(c) (((c) >= 0x81 && (c) <= 0x9f) || \
((c) >= 0xe0 && (c) <= 0xef))
#define iseuckr(c) ((c) >= 0xa1 && (c) <= 0xfe)
#define isGBEncoding(e) ((e)==0x80000019||(e)==0x80000421|| \
(e)==0x80000631||(e)==0x80000632|| \
(e)==0x80000930)
#define isBig5Encoding(e) ((e)==0x80000002||(e)==0x80000423|| \
(e)==0x80000931||(e)==0x80000a03|| \
(e)==0x80000a06)
#define isJPEncoding(e) ((e)==0x80000001||(e)==0x8||(e)==0x15)
#define isSJISEncoding(e) ((e)==0x80000628||(e)==0x80000a01)
#define isKREncoding(e) ((e)==0x80000422||(e)==0x80000003|| \
(e)==0x80000840||(e)==0x80000940)
#define ESC 0x1b
#define DEL 0x7f
#define CURSOR_SET_DOWN "\033OB"
#define CURSOR_SET_UP "\033OA"
#define CURSOR_SET_RIGHT "\033OC"
#define CURSOR_SET_LEFT "\033OD"
#define CURSOR_SET_HOME "\033OH"
#define CURSOR_SET_END "\033OF"
#define CURSOR_RESET_DOWN "\033[B"
#define CURSOR_RESET_UP "\033[A"
#define CURSOR_RESET_RIGHT "\033[C"
#define CURSOR_RESET_LEFT "\033[D"
#define CURSOR_RESET_HOME "\033[H"
#define CURSOR_RESET_END "\033[F"
#define CURSOR_MOD_DOWN "\033[1;%dB"
#define CURSOR_MOD_UP "\033[1;%dA"
#define CURSOR_MOD_RIGHT "\033[1;%dC"
#define CURSOR_MOD_LEFT "\033[1;%dD"
#define CURSOR_MOD_HOME "\033[1;%dH"
#define CURSOR_MOD_END "\033[1;%dF"
#define KEY_INSERT "\033[2~"
#define KEY_PAGE_UP "\033[5~"
#define KEY_PAGE_DOWN "\033[6~"
#define KEY_DEL "\033[3~"
#define KEY_BACKSPACE "\010"
#define ALT_KP_0 "\033Op"
#define ALT_KP_1 "\033Oq"
#define ALT_KP_2 "\033Or"
#define ALT_KP_3 "\033Os"
#define ALT_KP_4 "\033Ot"
#define ALT_KP_5 "\033Ou"
#define ALT_KP_6 "\033Ov"
#define ALT_KP_7 "\033Ow"
#define ALT_KP_8 "\033Ox"
#define ALT_KP_9 "\033Oy"
#define ALT_KP_MINUS "\033Om"
#define ALT_KP_PLUS "\033Ok"
#define ALT_KP_PERIOD "\033On"
#define ALT_KP_SLASH "\033Oo"
#define ALT_KP_STAR "\033Oj"
#define ALT_KP_EQUALS "\033OX"
#define ALT_KP_ENTER "\033OM"
#define KEY_FUNCTION_FORMAT "\033[%d~"
#define REPORT_POSITION "\033[%d;%dR"
#define REPORT_POSITION_Q "\033[?%d;%dR"
#define REPORT_STATUS "\033[0n"
// Device Attribute : VT100 with Advanced Video Option
#define REPORT_WHATAREYOU "\033[?1;2c"
// Secondary Device Attribute: VT100
#define REPORT_SDA "\033[>0;95;c"
#define REPORT_VT52 "\033/Z"
#define conststr_sizeof(n) ((sizeof(n)) - 1)
#define MAKE_CSI_COMMAND(first, second) ((first << 8) | second)
typedef struct {
int p[VT100CSIPARAM_MAX];
int count;
int cmd;
BOOL question;
int modifier;
} CSIParam;
// functions
static BOOL isCSI(unsigned char *, int);
static BOOL isXTERM(unsigned char *, int);
static BOOL isString(unsigned char *, NSStringEncoding);
static int getCSIParam(unsigned char *, int, CSIParam *, VT100Screen *);
static VT100TCC decode_csi(unsigned char *, int, int *,VT100Screen *);
static VT100TCC decode_xterm(unsigned char *, int, int *,NSStringEncoding);
static VT100TCC decode_ansi(unsigned char *,int, int *,VT100Screen *);
static VT100TCC decode_other(unsigned char *, int, int *, NSStringEncoding);
static VT100TCC decode_control(unsigned char *, int, int *,NSStringEncoding,VT100Screen *);
static int decode_utf8_char(unsigned char *, int, int *);
static VT100TCC decode_utf8(unsigned char *, int, int *);
static VT100TCC decode_euccn(unsigned char *, int, int *);
static VT100TCC decode_big5(unsigned char *,int, int *);
static VT100TCC decode_string(unsigned char *, int, int *,
NSStringEncoding);
static BOOL isCSI(unsigned char *code, int len)
{
if (len >= 2 && code[0] == ESC && (code[1] == '[')) {
return YES;
}
return NO;
}
static BOOL isXTERM(unsigned char *code, int len)
{
if (len >= 2 && code[0] == ESC && (code[1] == ']'))
return YES;
return NO;
}
static BOOL isANSI(unsigned char *code, int len)
{
// Currently, we only support esc-c as an ANSI code (other ansi codes are CSI).
if (len >= 2 && code[0] == ESC && code[1] == 'c') {
return YES;
}
return NO;
}
static BOOL isUNDERSCORE(unsigned char *code, int len)
{
if (len >= 2 && code[0] == ESC && code[1] == '_') {
return YES;
}
return NO;
}
static BOOL isString(unsigned char *code,
NSStringEncoding encoding)
{
BOOL result = NO;
// NSLog(@"%@",[NSString localizedNameOfStringEncoding:encoding]);
if (encoding== NSUTF8StringEncoding) {
if (*code >= 0x80) {
result = YES;
}
}
else if (isGBEncoding(encoding)) {
if (iseuccn(*code))
result = YES;
}
else if (isBig5Encoding(encoding)) {
if (isbig5(*code))
result = YES;
}
else if (isJPEncoding(encoding)) {
if (*code ==0x8e || *code==0x8f|| (*code>=0xa1&&*code<=0xfe))
result = YES;
}
else if (isSJISEncoding(encoding)) {
if (*code >= 0x80)
result = YES;
}
else if (isKREncoding(encoding)) {
if (iseuckr(*code))
result = YES;
}
else if (*code>=0x20) {
result = YES;
}
return result;
}
static int getCSIParam(unsigned char *datap,
int datalen,
CSIParam *param, VT100Screen *SCREEN)
{
int i;
BOOL unrecognized=NO;
unsigned char *orgp = datap;
BOOL readNumericParameter = NO;
NSCParameterAssert(datap != NULL);
NSCParameterAssert(datalen >= 2);
NSCParameterAssert(param != NULL);
param->count = 0;
param->cmd = 0;
for (i = 0; i < VT100CSIPARAM_MAX; ++i )
param->p[i] = -1;
NSCParameterAssert(datap[0] == ESC);
NSCParameterAssert(datap[1] == '[');
datap += 2;
datalen -= 2;
if (datalen > 0 && *datap == '?') {
param->question = YES;
datap ++;
datalen --;
}
// check for secondsry device attribute modifier
else if (datalen > 0 && *datap == '>')
{
param->modifier = '>';
param->question = NO;
datap++;
datalen--;
}
else
param->question = NO;
while (datalen > 0) {
if (isdigit(*datap)) {
int n = *datap - '0';
datap++;
datalen--;
while (datalen > 0 && isdigit(*datap)) {
n = n * 10 + *datap - '0';
datap++;
datalen--;
}
//if (param->count == 0 )
//param->count = 1;
//param->p[param->count - 1] = n;
if(param->count < VT100CSIPARAM_MAX)
param->p[param->count] = n;
// increment the parameter count
param->count++;
// set the numeric parameter flag
readNumericParameter = YES;
}
else if (*datap == ';') {
datap++;
datalen--;
// If we got an implied (blank) parameter, increment the parameter count again
if(readNumericParameter == NO)
param->count++;
// reset the parameter flag
readNumericParameter = NO;
if (param->count >= VT100CSIPARAM_MAX) {
// broken
//param->cmd = 0xff;
unrecognized=YES;
//break;
}
}
else if (isalpha(*datap)||*datap=='@') {
datalen--;
param->cmd = unrecognized?0xff:*datap;
datap++;
break;
}
else if (*datap == ' ') {
datap++;
datalen--;
switch (*datap) {
case 'q':
param->cmd = MAKE_CSI_COMMAND(' ', 'q');
datap++;
datalen--;
return datap - orgp;
default:
//NSLog(@"Unrecognized sequence: CSI SP %c (0x%x)", *datap, *datap);
datap++;
datalen--;
param->cmd = 0xff;
break;
}
}
else if (*datap=='\'') {
datap++;
datalen--;
switch (*datap) {
case 'z':
case '|':
case 'w':
//NSLog(@"Unsupported locator sequence");
param->cmd=0xff;
datap++;
datalen--;
break;
default:
//NSLog(@"Unrecognized locator sequence");
datap++;
datalen--;
param->cmd=0xff;
break;
}
break;
}
else if (*datap=='&') {
datap++;
datalen--;
switch (*datap) {
case 'w':
//NSLog(@"Unsupported locator sequence");
param->cmd=0xff;
datap++;
datalen--;
break;
default:
//NSLog(@"Unrecognized locator sequence");
datap++;
datalen--;
param->cmd=0xff;
break;
}
break;
}
else if (*datap == '!') {
datap++;
datalen--;
if (datalen == 0) {
return -1;
}
switch (*datap) {
case 'p':
param->cmd = MAKE_CSI_COMMAND('!', 'p');
datap++;
datalen--;
return datap - orgp;
default:
datap++;
datalen--;
param->cmd=0xff;
break;
}
}
else {
switch (*datap) {
case VT100CC_ENQ: break;
case VT100CC_BEL: [SCREEN activateBell]; break;
case VT100CC_BS: [SCREEN backSpace]; break;
case VT100CC_HT: [SCREEN setTab]; break;
case VT100CC_LF:
case VT100CC_VT:
case VT100CC_FF: [SCREEN setNewLine]; break;
case VT100CC_CR: [SCREEN cursorToX:1 Y:[SCREEN cursorY]]; break;
case VT100CC_SO: break;
case VT100CC_SI: break;
case VT100CC_DC1: break;
case VT100CC_DC3: break;
case VT100CC_CAN:
case VT100CC_SUB: break;
case VT100CC_DEL: [SCREEN deleteCharacters:1];break;
default:
//NSLog(@"Unrecognized escape sequence: %c (0x%x)", *datap, *datap);
param->cmd=0xff;
unrecognized=YES;
break;
}
if (unrecognized == NO) {
datalen--;
datap++;
}
}
if (unrecognized) break;
}
return datap - orgp;
}
#define SET_PARAM_DEFAULT(pm,n,d) \
(((pm).p[(n)] = (pm).p[(n)] < 0 ? (d):(pm).p[(n)]), \
((pm).count = (pm).count > (n) + 1 ? (pm).count : (n) + 1 ))
static VT100TCC decode_ansi(unsigned char *datap,
int datalen,
int *rmlen,
VT100Screen *SCREEN)
{
VT100TCC result;
result.type = VT100_UNKNOWNCHAR;
if (datalen >= 2 && datap[0] == ESC) {
switch (datap[1]) {
case 'c':
result.type = ANSI_RIS;
*rmlen = 2;
break;
}
}
return result;
}
static VT100TCC decode_csi(unsigned char *datap,
int datalen,
int *rmlen,VT100Screen *SCREEN)
{
VT100TCC result;
CSIParam param={{0},0};
int paramlen;
int i;
paramlen = getCSIParam(datap, datalen, ¶m, SCREEN);
result.type = VT100_WAIT;
// Check for unkown
if (param.cmd == 0xff) {
result.type = VT100_UNKNOWNCHAR;
*rmlen = paramlen;
}
// process
else if (paramlen > 0 && param.cmd > 0) {
if (!param.question) {
switch (param.cmd) {
case 'D': // Cursor Backward
result.type = VT100CSI_CUB;
SET_PARAM_DEFAULT(param, 0, 1);
break;
case 'B': // Cursor Down
result.type = VT100CSI_CUD;
SET_PARAM_DEFAULT(param, 0, 1);
break;
case 'C': // Cursor Forward
result.type = VT100CSI_CUF;
SET_PARAM_DEFAULT(param, 0, 1);
break;
case 'A': // Cursor Up
result.type = VT100CSI_CUU;
SET_PARAM_DEFAULT(param, 0, 1);
break;
case 'H':
result.type = VT100CSI_CUP;
SET_PARAM_DEFAULT(param, 0, 1);
SET_PARAM_DEFAULT(param, 1, 1);
break;
case 'c':
result.type = VT100CSI_DA;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case 'q':
result.type = VT100CSI_DECLL;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case 'x':
if (param.count == 1)
result.type = VT100CSI_DECREQTPARM;
else
result.type = VT100CSI_DECREPTPARM;
break;
case 'r':
result.type = VT100CSI_DECSTBM;
SET_PARAM_DEFAULT(param, 0, 1);
SET_PARAM_DEFAULT(param, 1, [SCREEN height]);
break;
case 'y':
if (param.count == 2)
result.type = VT100CSI_DECTST;
else
{
#if LOG_UNKNOWN
NSLog(@"1: Unknown token %c", param.cmd);
#endif
result.type = VT100_NOTSUPPORT;
}
break;
case 'n':
result.type = VT100CSI_DSR;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case 'J':
result.type = VT100CSI_ED;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case 'K':
result.type = VT100CSI_EL;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case 'f':
result.type = VT100CSI_HVP;
SET_PARAM_DEFAULT(param, 0, 1);
SET_PARAM_DEFAULT(param, 1, 1);
break;
case 'l':
result.type = VT100CSI_RM;
break;
case 'm':
result.type = VT100CSI_SGR;
for (i = 0; i < param.count; ++i) {
SET_PARAM_DEFAULT(param, i, 0);
// NSLog(@"m[%d]=%d",i,param.p[i]);
}
break;
case 'h':
result.type = VT100CSI_SM;
break;
case 'g':
result.type = VT100CSI_TBC;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case MAKE_CSI_COMMAND(' ', 'q'):
result.type = VT100CSI_DECSCUSR;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case MAKE_CSI_COMMAND('!', 'p'):
result.type = VT100CSI_DECSTR;
SET_PARAM_DEFAULT(param, 0, 0);
break;
// these are xterm controls
case '@':
result.type = XTERMCC_INSBLNK;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'L':
result.type = XTERMCC_INSLN;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'P':
result.type = XTERMCC_DELCH;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'M':
result.type = XTERMCC_DELLN;
SET_PARAM_DEFAULT(param,0,1);
break;
case 't':
switch (param.p[0]) {
case 8:
result.type = XTERMCC_WINDOWSIZE;
SET_PARAM_DEFAULT(param, 1, 0); // columns or Y
SET_PARAM_DEFAULT(param, 2, 0); // rows or X
break;
case 3:
result.type = XTERMCC_WINDOWPOS;
SET_PARAM_DEFAULT(param, 1, 0); // columns or Y
SET_PARAM_DEFAULT(param, 2, 0); // rows or X
break;
case 4:
result.type = XTERMCC_WINDOWSIZE_PIXEL;
SET_PARAM_DEFAULT(param, 1, 0); // columns or Y
SET_PARAM_DEFAULT(param, 2, 0); // rows or X
break;
case 2:
result.type = XTERMCC_ICONIFY;
break;
case 1:
result.type = XTERMCC_DEICONIFY;
break;
case 5:
result.type = XTERMCC_RAISE;
break;
case 6:
result.type = XTERMCC_LOWER;
break;
case 11:
result.type = XTERMCC_REPORT_WIN_STATE;
break;
case 13:
result.type = XTERMCC_REPORT_WIN_POS;
break;
case 14:
result.type = XTERMCC_REPORT_WIN_PIX_SIZE;
break;
case 18:
result.type = XTERMCC_REPORT_WIN_SIZE;
break;
case 19:
result.type = XTERMCC_REPORT_SCREEN_SIZE;
break;
case 20:
result.type = XTERMCC_REPORT_ICON_TITLE;
break;
case 21:
result.type = XTERMCC_REPORT_WIN_TITLE;
break;
default:
result.type = VT100_NOTSUPPORT;
break;
}
break;
case 'S':
result.type = XTERMCC_SU;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'T':
if (param.count<2) {
result.type = XTERMCC_SD;
SET_PARAM_DEFAULT(param,0,1);
}
else
result.type = VT100_NOTSUPPORT;
break;
// ANSI
case 'Z':
result.type = ANSICSI_CBT;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'G':
result.type = ANSICSI_CHA;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'd':
result.type = ANSICSI_VPA;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'e':
result.type = ANSICSI_VPR;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'X':
result.type = ANSICSI_ECH;
SET_PARAM_DEFAULT(param,0,1);
break;
case 'i':
result.type = ANSICSI_PRINT;
SET_PARAM_DEFAULT(param,0,0);
break;
case 's':
result.type = ANSICSI_SCP;
SET_PARAM_DEFAULT(param,0,0);
break;
case 'u':
result.type = ANSICSI_RCP;
SET_PARAM_DEFAULT(param,0,0);
break;
default:
#if LOG_UNKNOWN
NSLog(@"2: Unknown token (%c); %s", param.cmd, datap);
#endif
result.type = VT100_NOTSUPPORT;
break;
}
}
else {
switch (param.cmd) {
case 'h': // Dec private mode set
result.type = VT100CSI_DECSET;
SET_PARAM_DEFAULT(param, 0, 0);
break;
case 'l': // Dec private mode reset
result.type = VT100CSI_DECRST;
SET_PARAM_DEFAULT(param, 0, 0);
break;
default:
#if LOG_UNKNOWN
NSLog(@"3: Unknown token %c", param.cmd);
#endif
result.type = VT100_NOTSUPPORT;
break;
}
}
// copy CSI parameter
for (i = 0; i < VT100CSIPARAM_MAX; ++i)
result.u.csi.p[i] = param.p[i];
result.u.csi.count = param.count;
result.u.csi.question = param.question;
result.u.csi.modifier = param.modifier;
*rmlen = paramlen;
}
return result;
}
static VT100TCC decode_underscore(unsigned char *datap,
int datalen,
int *rmlen,
NSStringEncoding enc)
{
VT100TCC result;
result.type = VT100_WAIT;
// Can assume we have "ESC _" so skip past that.
datap += 2;
datalen -= 2;
*rmlen=2;
if (datalen > 0) {
int i;
BOOL found = NO;
// Search for esc \ terminator.
for (i = 0; i < datalen; i++) {
if (i > 0 && datap[i - 1] == ESC && datap[i] == '\\') {
// Found esc \. Grab text from datap to char before esc and
// save in result.u.string.
NSData *data = [NSData dataWithBytes:datap length:i - 1];
result.u.string = [[[NSString alloc] initWithData:data
encoding:enc] autorelease];
// Consume everything up to the backslash
(*rmlen) += i + 1;
found = YES;
break;
} else if (i > 0 && datap[i - 1] == ESC) {
// Stop on ESC <anything> to avoid getting stuck after a broken escape code
result.type = VT100_NOTSUPPORT;
return result;
}
}
if (found && [result.u.string hasPrefix:@"tmux"]) {
if ([result.u.string isEqualToString:@"tmux0.5"] ||
[result.u.string hasPrefix:@"tmux0.5;"]) {
result.type = UNDERSCORE_TMUX1;
} else if ([result.u.string hasPrefix:@"tmux"]) {
result.type = UNDERSCORE_TMUX_UNSUPPORTED;
} else {
result.type = VT100_NOTSUPPORT;
}
} else if (found) {
result.type = VT100_NOTSUPPORT;
}
}
return result;
}
static VT100TCC decode_xterm(unsigned char *datap,
int datalen,
int *rmlen,
NSStringEncoding enc)
{
int mode = 0;
VT100TCC result;
NSData *data;
char s[MAX_BUFFER_LENGTH] = { 0 }, *c = nil;
assert(datap != NULL);
assert(datalen >= 2);
assert(datap[0] == ESC);
assert(datap[1] == ']');
datap += 2;
datalen -= 2;
*rmlen = 2;
if (datalen > 0 && isdigit(*datap)) {
// read an integer from datap and store it in mode.
int n = *datap++ - '0';
datalen--;
(*rmlen)++;
while (datalen > 0 && isdigit(*datap)) {
n = n * 10 + *datap - '0';
(*rmlen)++;
datap++;
datalen--;
}
mode = n;
}
BOOL unrecognized = NO;
if (datalen > 0) {
if (*datap != ';' && *datap != 'P') {
// Bogus first char after "esc ] [number]". Consume up to and
// including terminator and then return VT100_NOTSUPPORT.
unrecognized = YES;
} else {
if (*datap == 'P') {
mode = -1;
}
// Consume ';' or 'P'.
datalen--;
datap++;
(*rmlen)++;
}
BOOL str_end = NO;
c = s;
// Search for the end of a ^G/ST terminated string (but see the note below about other ways to terminate it).
while (*datap != 7 && datalen > 0) {
// Technically, only ^G or esc + \ ought to terminate a string. But sometimes an application is buggy and it forgets to terminate it.
// xterm has a very complicated state machine that determines when a string is terminated. Effectively, it allows you to terminate
// an OSC with ESC + anything except ], 0x9d, and 0xdd. Other bogus values may do strange things in xterm.
if (*datap == 0x1b && // 0x1b == ESC
datalen > 2 &&
(*(datap+1) != ']' &&
*(datap+1) != 0x9d &&
*(datap+1) != 0xdd)) {
// Esc+backslash (called ST in the spec), or equivalent
datap++;
datalen--;
(*rmlen)++;
str_end = YES;
break;
}
if (c - s < MAX_BUFFER_LENGTH) {
*c=*datap;
c++;
}
datalen--;
datap++;
(*rmlen)++;
}
if (datalen > 0 && *datap == 7) {
str_end = YES;
}
if (!str_end && datalen == 0) {
// Ran out of data before terminator. Keep trying.
*rmlen = 0;
} else {
// Consume terminator.
datap++;
datalen--;
(*rmlen)++;
}
} else {
// No data yet, keep trying.
*rmlen=0;
}
if (!(*rmlen)) {
result.type = VT100_WAIT;
} else if (unrecognized) {
// Found terminator but it's malformed.
result.type = VT100_NOTSUPPORT;
} else {
data = [NSData dataWithBytes:s length:c-s];
result.u.string = [[[NSString alloc] initWithData:data
encoding:enc] autorelease];
switch (mode) {
case -1:
// Nonstandard Linux OSC P nrrggbb ST to change color palette
// entry.
result.type = XTERMCC_SET_PALETTE;
break;
case 0:
result.type = XTERMCC_WINICON_TITLE;
break;
case 1:
result.type = XTERMCC_ICON_TITLE;
break;
case 2:
result.type = XTERMCC_WIN_TITLE;
break;
case 4:
result.type = XTERMCC_SET_RGB;
break;
case 6:
// This is not a real xterm code. It is from eTerm, which extended the xterm
// protocol for its own purposes. We don't follow the eTerm protocol,
// but we follow the template it set.
// http://www.eterm.org/docs/view.php?doc=ref#escape
result.type = XTERMCC_PROPRIETARY_ETERM_EXT;
break;
case 9:
result.type = ITERM_GROWL;
break;
case 50:
// Nonstandard escape code implemented by Konsole.
// <Esc>]50;key=value^G
result.type = XTERMCC_SET_KVP;
break;
case 52:
// base64 copy/paste (OPT_PASTE64)
result.type = XTERMCC_PASTE64;
break;
default:
result.type = VT100_NOTSUPPORT;
break;
}
// NSLog(@"result: %d[%@],%d",result.type,result.u.string,*rmlen);
}
return result;
}
static VT100TCC decode_other(unsigned char *datap,
int datalen,
int *rmlen,
NSStringEncoding enc)
{
VT100TCC result;
int c1, c2;
NSCParameterAssert(datap[0] == ESC);
NSCParameterAssert(datalen > 1);
c1 = (datalen >= 2 ? datap[1]: -1);
c2 = (datalen >= 3 ? datap[2]: -1);
// A third parameter could be available but isn't currently used.
// c3 = (datalen >= 4 ? datap[3]: -1);
switch (c1) {
case 27: // esc: two esc's in a row. Ignore the first one.
result.type = VT100_NOTSUPPORT;
*rmlen = 1;
break;
case '#':
if (c2 < 0) {
result.type = VT100_WAIT;
} else {
switch (c2) {
case '8': result.type=VT100CSI_DECALN; break;
default:
#if LOG_UNKNOWN
NSLog(@"4: Unknown token ESC # %c", c2);
#endif
result.type = VT100_NOTSUPPORT;
}
*rmlen = 3;
}
break;
case '=':
result.type = VT100CSI_DECKPAM;
*rmlen = 2;
break;
case '>':
result.type = VT100CSI_DECKPNM;
*rmlen = 2;
break;
case '<':
result.type = STRICT_ANSI_MODE;
*rmlen = 2;
break;
case '(':
if (c2 < 0) {
result.type = VT100_WAIT;