05c66cb37d
Moves the mode bits used by x.c from Term to TermWindow, absorbing UI/input-related mode bits (visible/focused/numlock) along the way. This is gradually reducing external references to Term. Since TermWindow is already internal to x.c, we add xsetmode() to allow st to modify window bits in accordance with escape sequences. IS_SET() is redefined accordingly (term.mode in st.c, win.mode in x.c). Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
2535 lines
52 KiB
C
2535 lines
52 KiB
C
/* See LICENSE for license details. */
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <locale.h>
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#include <pwd.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <stdint.h>
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#include <sys/ioctl.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <termios.h>
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#include <time.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <wchar.h>
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#include "st.h"
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#include "win.h"
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#if defined(__linux)
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#include <pty.h>
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#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
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#include <util.h>
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#elif defined(__FreeBSD__) || defined(__DragonFly__)
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#include <libutil.h>
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#endif
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/* Arbitrary sizes */
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#define UTF_INVALID 0xFFFD
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#define ESC_BUF_SIZ (128*UTF_SIZ)
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#define ESC_ARG_SIZ 16
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#define STR_BUF_SIZ ESC_BUF_SIZ
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#define STR_ARG_SIZ ESC_ARG_SIZ
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/* macros */
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#define IS_SET(flag) ((term.mode & (flag)) != 0)
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#define NUMMAXLEN(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
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#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
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#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
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#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
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#define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
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/* constants */
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#define ISO14755CMD "dmenu -w \"$WINDOWID\" -p codepoint: </dev/null"
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enum term_mode {
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MODE_WRAP = 1 << 0,
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MODE_INSERT = 1 << 1,
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MODE_ALTSCREEN = 1 << 2,
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MODE_CRLF = 1 << 3,
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MODE_ECHO = 1 << 4,
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MODE_PRINT = 1 << 5,
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MODE_UTF8 = 1 << 6,
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MODE_SIXEL = 1 << 7,
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};
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enum cursor_movement {
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CURSOR_SAVE,
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CURSOR_LOAD
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};
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enum cursor_state {
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CURSOR_DEFAULT = 0,
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CURSOR_WRAPNEXT = 1,
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CURSOR_ORIGIN = 2
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};
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enum charset {
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CS_GRAPHIC0,
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CS_GRAPHIC1,
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CS_UK,
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CS_USA,
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CS_MULTI,
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CS_GER,
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CS_FIN
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};
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enum escape_state {
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ESC_START = 1,
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ESC_CSI = 2,
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ESC_STR = 4, /* OSC, PM, APC */
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ESC_ALTCHARSET = 8,
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ESC_STR_END = 16, /* a final string was encountered */
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ESC_TEST = 32, /* Enter in test mode */
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ESC_UTF8 = 64,
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ESC_DCS =128,
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};
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/* CSI Escape sequence structs */
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/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
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typedef struct {
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char buf[ESC_BUF_SIZ]; /* raw string */
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int len; /* raw string length */
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char priv;
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int arg[ESC_ARG_SIZ];
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int narg; /* nb of args */
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char mode[2];
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} CSIEscape;
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/* STR Escape sequence structs */
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/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
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typedef struct {
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char type; /* ESC type ... */
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char buf[STR_BUF_SIZ]; /* raw string */
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int len; /* raw string length */
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char *args[STR_ARG_SIZ];
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int narg; /* nb of args */
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} STREscape;
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static void execsh(char **);
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static void stty(char **);
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static void sigchld(int);
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static void ttywriteraw(const char *, size_t);
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static void csidump(void);
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static void csihandle(void);
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static void csiparse(void);
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static void csireset(void);
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static int eschandle(uchar);
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static void strdump(void);
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static void strhandle(void);
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static void strparse(void);
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static void strreset(void);
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static void tprinter(char *, size_t);
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static void tdumpsel(void);
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static void tdumpline(int);
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static void tdump(void);
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static void tclearregion(int, int, int, int);
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static void tcursor(int);
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static void tdeletechar(int);
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static void tdeleteline(int);
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static void tinsertblank(int);
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static void tinsertblankline(int);
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static int tlinelen(int);
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static void tmoveto(int, int);
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static void tmoveato(int, int);
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static void tnewline(int);
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static void tputtab(int);
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static void tputc(Rune);
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static void treset(void);
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static void tscrollup(int, int);
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static void tscrolldown(int, int);
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static void tsetattr(int *, int);
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static void tsetchar(Rune, Glyph *, int, int);
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static void tsetdirt(int, int);
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static void tsetscroll(int, int);
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static void tswapscreen(void);
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static void tsetmode(int, int, int *, int);
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static int twrite(const char *, int, int);
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static void tfulldirt(void);
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static void tcontrolcode(uchar );
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static void tdectest(char );
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static void tdefutf8(char);
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static int32_t tdefcolor(int *, int *, int);
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static void tdeftran(char);
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static void tstrsequence(uchar);
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static void selscroll(int, int);
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static void selsnap(int *, int *, int);
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static Rune utf8decodebyte(char, size_t *);
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static char utf8encodebyte(Rune, size_t);
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static char *utf8strchr(char *s, Rune u);
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static size_t utf8validate(Rune *, size_t);
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static char *base64dec(const char *);
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static ssize_t xwrite(int, const char *, size_t);
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/* Globals */
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Term term;
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int cmdfd;
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pid_t pid;
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int oldbutton = 3; /* button event on startup: 3 = release */
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static Selection sel;
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static CSIEscape csiescseq;
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static STREscape strescseq;
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static int iofd = 1;
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static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
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static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
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static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
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static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
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ssize_t
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xwrite(int fd, const char *s, size_t len)
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{
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size_t aux = len;
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ssize_t r;
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while (len > 0) {
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r = write(fd, s, len);
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if (r < 0)
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return r;
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len -= r;
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s += r;
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}
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return aux;
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}
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void *
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xmalloc(size_t len)
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{
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void *p = malloc(len);
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if (!p)
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die("Out of memory\n");
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return p;
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}
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void *
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xrealloc(void *p, size_t len)
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{
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if ((p = realloc(p, len)) == NULL)
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die("Out of memory\n");
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return p;
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}
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char *
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xstrdup(char *s)
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{
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if ((s = strdup(s)) == NULL)
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die("Out of memory\n");
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return s;
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}
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size_t
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utf8decode(const char *c, Rune *u, size_t clen)
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{
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size_t i, j, len, type;
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Rune udecoded;
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*u = UTF_INVALID;
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if (!clen)
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return 0;
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udecoded = utf8decodebyte(c[0], &len);
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if (!BETWEEN(len, 1, UTF_SIZ))
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return 1;
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for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
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udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
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if (type != 0)
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return j;
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}
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if (j < len)
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return 0;
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*u = udecoded;
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utf8validate(u, len);
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return len;
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}
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Rune
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utf8decodebyte(char c, size_t *i)
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{
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for (*i = 0; *i < LEN(utfmask); ++(*i))
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if (((uchar)c & utfmask[*i]) == utfbyte[*i])
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return (uchar)c & ~utfmask[*i];
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return 0;
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}
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size_t
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utf8encode(Rune u, char *c)
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{
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size_t len, i;
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len = utf8validate(&u, 0);
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if (len > UTF_SIZ)
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return 0;
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for (i = len - 1; i != 0; --i) {
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c[i] = utf8encodebyte(u, 0);
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u >>= 6;
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}
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c[0] = utf8encodebyte(u, len);
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return len;
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}
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char
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utf8encodebyte(Rune u, size_t i)
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{
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return utfbyte[i] | (u & ~utfmask[i]);
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}
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char *
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utf8strchr(char *s, Rune u)
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{
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Rune r;
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size_t i, j, len;
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len = strlen(s);
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for (i = 0, j = 0; i < len; i += j) {
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if (!(j = utf8decode(&s[i], &r, len - i)))
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break;
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if (r == u)
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return &(s[i]);
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}
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return NULL;
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}
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size_t
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utf8validate(Rune *u, size_t i)
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{
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if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
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*u = UTF_INVALID;
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for (i = 1; *u > utfmax[i]; ++i)
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;
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return i;
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}
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static const char base64_digits[] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
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63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
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2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
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22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
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35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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char
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base64dec_getc(const char **src)
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{
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while (**src && !isprint(**src)) (*src)++;
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return *((*src)++);
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}
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char *
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base64dec(const char *src)
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{
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size_t in_len = strlen(src);
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char *result, *dst;
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if (in_len % 4)
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in_len += 4 - (in_len % 4);
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result = dst = xmalloc(in_len / 4 * 3 + 1);
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while (*src) {
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int a = base64_digits[(unsigned char) base64dec_getc(&src)];
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int b = base64_digits[(unsigned char) base64dec_getc(&src)];
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int c = base64_digits[(unsigned char) base64dec_getc(&src)];
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int d = base64_digits[(unsigned char) base64dec_getc(&src)];
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*dst++ = (a << 2) | ((b & 0x30) >> 4);
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if (c == -1)
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break;
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*dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
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if (d == -1)
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break;
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*dst++ = ((c & 0x03) << 6) | d;
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}
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*dst = '\0';
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return result;
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}
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void
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selinit(void)
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{
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sel.mode = SEL_IDLE;
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sel.snap = 0;
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sel.ob.x = -1;
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}
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int
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tlinelen(int y)
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{
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int i = term.col;
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if (term.line[y][i - 1].mode & ATTR_WRAP)
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return i;
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while (i > 0 && term.line[y][i - 1].u == ' ')
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--i;
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return i;
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}
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void
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selstart(int col, int row, int snap)
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{
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selclear();
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sel.mode = SEL_EMPTY;
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sel.type = SEL_REGULAR;
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sel.snap = snap;
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sel.oe.x = sel.ob.x = col;
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sel.oe.y = sel.ob.y = row;
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selnormalize();
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if (sel.snap != 0)
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sel.mode = SEL_READY;
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tsetdirt(sel.nb.y, sel.ne.y);
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}
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void
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selextend(int col, int row, int type, int done)
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{
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int oldey, oldex, oldsby, oldsey, oldtype;
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if (!sel.mode)
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return;
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if (done && sel.mode == SEL_EMPTY) {
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selclear();
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return;
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}
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oldey = sel.oe.y;
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oldex = sel.oe.x;
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oldsby = sel.nb.y;
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oldsey = sel.ne.y;
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oldtype = sel.type;
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sel.alt = IS_SET(MODE_ALTSCREEN);
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sel.oe.x = col;
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sel.oe.y = row;
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selnormalize();
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sel.type = type;
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|
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if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type)
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tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
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sel.mode = done ? SEL_IDLE : SEL_READY;
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}
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|
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void
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selnormalize(void)
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{
|
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int i;
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if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
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sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
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sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
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} else {
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sel.nb.x = MIN(sel.ob.x, sel.oe.x);
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sel.ne.x = MAX(sel.ob.x, sel.oe.x);
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}
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sel.nb.y = MIN(sel.ob.y, sel.oe.y);
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sel.ne.y = MAX(sel.ob.y, sel.oe.y);
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selsnap(&sel.nb.x, &sel.nb.y, -1);
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selsnap(&sel.ne.x, &sel.ne.y, +1);
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/* expand selection over line breaks */
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if (sel.type == SEL_RECTANGULAR)
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return;
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i = tlinelen(sel.nb.y);
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if (i < sel.nb.x)
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sel.nb.x = i;
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if (tlinelen(sel.ne.y) <= sel.ne.x)
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sel.ne.x = term.col - 1;
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}
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int
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selected(int x, int y)
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{
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if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
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sel.alt != IS_SET(MODE_ALTSCREEN))
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return 0;
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if (sel.type == SEL_RECTANGULAR)
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return BETWEEN(y, sel.nb.y, sel.ne.y)
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&& BETWEEN(x, sel.nb.x, sel.ne.x);
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return BETWEEN(y, sel.nb.y, sel.ne.y)
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&& (y != sel.nb.y || x >= sel.nb.x)
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&& (y != sel.ne.y || x <= sel.ne.x);
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}
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|
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void
|
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selsnap(int *x, int *y, int direction)
|
||
{
|
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int newx, newy, xt, yt;
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int delim, prevdelim;
|
||
Glyph *gp, *prevgp;
|
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|
||
switch (sel.snap) {
|
||
case SNAP_WORD:
|
||
/*
|
||
* Snap around if the word wraps around at the end or
|
||
* beginning of a line.
|
||
*/
|
||
prevgp = &term.line[*y][*x];
|
||
prevdelim = ISDELIM(prevgp->u);
|
||
for (;;) {
|
||
newx = *x + direction;
|
||
newy = *y;
|
||
if (!BETWEEN(newx, 0, term.col - 1)) {
|
||
newy += direction;
|
||
newx = (newx + term.col) % term.col;
|
||
if (!BETWEEN(newy, 0, term.row - 1))
|
||
break;
|
||
|
||
if (direction > 0)
|
||
yt = *y, xt = *x;
|
||
else
|
||
yt = newy, xt = newx;
|
||
if (!(term.line[yt][xt].mode & ATTR_WRAP))
|
||
break;
|
||
}
|
||
|
||
if (newx >= tlinelen(newy))
|
||
break;
|
||
|
||
gp = &term.line[newy][newx];
|
||
delim = ISDELIM(gp->u);
|
||
if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
|
||
|| (delim && gp->u != prevgp->u)))
|
||
break;
|
||
|
||
*x = newx;
|
||
*y = newy;
|
||
prevgp = gp;
|
||
prevdelim = delim;
|
||
}
|
||
break;
|
||
case SNAP_LINE:
|
||
/*
|
||
* Snap around if the the previous line or the current one
|
||
* has set ATTR_WRAP at its end. Then the whole next or
|
||
* previous line will be selected.
|
||
*/
|
||
*x = (direction < 0) ? 0 : term.col - 1;
|
||
if (direction < 0) {
|
||
for (; *y > 0; *y += direction) {
|
||
if (!(term.line[*y-1][term.col-1].mode
|
||
& ATTR_WRAP)) {
|
||
break;
|
||
}
|
||
}
|
||
} else if (direction > 0) {
|
||
for (; *y < term.row-1; *y += direction) {
|
||
if (!(term.line[*y][term.col-1].mode
|
||
& ATTR_WRAP)) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
char *
|
||
getsel(void)
|
||
{
|
||
char *str, *ptr;
|
||
int y, bufsize, lastx, linelen;
|
||
Glyph *gp, *last;
|
||
|
||
if (sel.ob.x == -1)
|
||
return NULL;
|
||
|
||
bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
|
||
ptr = str = xmalloc(bufsize);
|
||
|
||
/* append every set & selected glyph to the selection */
|
||
for (y = sel.nb.y; y <= sel.ne.y; y++) {
|
||
if ((linelen = tlinelen(y)) == 0) {
|
||
*ptr++ = '\n';
|
||
continue;
|
||
}
|
||
|
||
if (sel.type == SEL_RECTANGULAR) {
|
||
gp = &term.line[y][sel.nb.x];
|
||
lastx = sel.ne.x;
|
||
} else {
|
||
gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
|
||
lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
|
||
}
|
||
last = &term.line[y][MIN(lastx, linelen-1)];
|
||
while (last >= gp && last->u == ' ')
|
||
--last;
|
||
|
||
for ( ; gp <= last; ++gp) {
|
||
if (gp->mode & ATTR_WDUMMY)
|
||
continue;
|
||
|
||
ptr += utf8encode(gp->u, ptr);
|
||
}
|
||
|
||
/*
|
||
* Copy and pasting of line endings is inconsistent
|
||
* in the inconsistent terminal and GUI world.
|
||
* The best solution seems like to produce '\n' when
|
||
* something is copied from st and convert '\n' to
|
||
* '\r', when something to be pasted is received by
|
||
* st.
|
||
* FIXME: Fix the computer world.
|
||
*/
|
||
if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
|
||
*ptr++ = '\n';
|
||
}
|
||
*ptr = 0;
|
||
return str;
|
||
}
|
||
|
||
void
|
||
selclear(void)
|
||
{
|
||
if (sel.ob.x == -1)
|
||
return;
|
||
sel.mode = SEL_IDLE;
|
||
sel.ob.x = -1;
|
||
tsetdirt(sel.nb.y, sel.ne.y);
|
||
}
|
||
|
||
void
|
||
die(const char *errstr, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start(ap, errstr);
|
||
vfprintf(stderr, errstr, ap);
|
||
va_end(ap);
|
||
exit(1);
|
||
}
|
||
|
||
void
|
||
execsh(char **args)
|
||
{
|
||
char *sh, *prog;
|
||
const struct passwd *pw;
|
||
|
||
errno = 0;
|
||
if ((pw = getpwuid(getuid())) == NULL) {
|
||
if (errno)
|
||
die("getpwuid:%s\n", strerror(errno));
|
||
else
|
||
die("who are you?\n");
|
||
}
|
||
|
||
if ((sh = getenv("SHELL")) == NULL)
|
||
sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
|
||
|
||
if (args)
|
||
prog = args[0];
|
||
else if (utmp)
|
||
prog = utmp;
|
||
else
|
||
prog = sh;
|
||
DEFAULT(args, ((char *[]) {prog, NULL}));
|
||
|
||
unsetenv("COLUMNS");
|
||
unsetenv("LINES");
|
||
unsetenv("TERMCAP");
|
||
setenv("LOGNAME", pw->pw_name, 1);
|
||
setenv("USER", pw->pw_name, 1);
|
||
setenv("SHELL", sh, 1);
|
||
setenv("HOME", pw->pw_dir, 1);
|
||
setenv("TERM", termname, 1);
|
||
|
||
signal(SIGCHLD, SIG_DFL);
|
||
signal(SIGHUP, SIG_DFL);
|
||
signal(SIGINT, SIG_DFL);
|
||
signal(SIGQUIT, SIG_DFL);
|
||
signal(SIGTERM, SIG_DFL);
|
||
signal(SIGALRM, SIG_DFL);
|
||
|
||
execvp(prog, args);
|
||
_exit(1);
|
||
}
|
||
|
||
void
|
||
sigchld(int a)
|
||
{
|
||
int stat;
|
||
pid_t p;
|
||
|
||
if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
|
||
die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
|
||
|
||
if (pid != p)
|
||
return;
|
||
|
||
if (!WIFEXITED(stat) || WEXITSTATUS(stat))
|
||
die("child finished with error '%d'\n", stat);
|
||
exit(0);
|
||
}
|
||
|
||
|
||
void
|
||
stty(char **args)
|
||
{
|
||
char cmd[_POSIX_ARG_MAX], **p, *q, *s;
|
||
size_t n, siz;
|
||
|
||
if ((n = strlen(stty_args)) > sizeof(cmd)-1)
|
||
die("incorrect stty parameters\n");
|
||
memcpy(cmd, stty_args, n);
|
||
q = cmd + n;
|
||
siz = sizeof(cmd) - n;
|
||
for (p = args; p && (s = *p); ++p) {
|
||
if ((n = strlen(s)) > siz-1)
|
||
die("stty parameter length too long\n");
|
||
*q++ = ' ';
|
||
memcpy(q, s, n);
|
||
q += n;
|
||
siz -= n + 1;
|
||
}
|
||
*q = '\0';
|
||
if (system(cmd) != 0)
|
||
perror("Couldn't call stty");
|
||
}
|
||
|
||
void
|
||
ttynew(char *line, char *out, char **args)
|
||
{
|
||
int m, s;
|
||
|
||
if (out) {
|
||
term.mode |= MODE_PRINT;
|
||
iofd = (!strcmp(out, "-")) ?
|
||
1 : open(out, O_WRONLY | O_CREAT, 0666);
|
||
if (iofd < 0) {
|
||
fprintf(stderr, "Error opening %s:%s\n",
|
||
out, strerror(errno));
|
||
}
|
||
}
|
||
|
||
if (line) {
|
||
if ((cmdfd = open(line, O_RDWR)) < 0)
|
||
die("open line failed: %s\n", strerror(errno));
|
||
dup2(cmdfd, 0);
|
||
stty(args);
|
||
return;
|
||
}
|
||
|
||
/* seems to work fine on linux, openbsd and freebsd */
|
||
if (openpty(&m, &s, NULL, NULL, NULL) < 0)
|
||
die("openpty failed: %s\n", strerror(errno));
|
||
|
||
switch (pid = fork()) {
|
||
case -1:
|
||
die("fork failed\n");
|
||
break;
|
||
case 0:
|
||
close(iofd);
|
||
setsid(); /* create a new process group */
|
||
dup2(s, 0);
|
||
dup2(s, 1);
|
||
dup2(s, 2);
|
||
if (ioctl(s, TIOCSCTTY, NULL) < 0)
|
||
die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
|
||
close(s);
|
||
close(m);
|
||
execsh(args);
|
||
break;
|
||
default:
|
||
close(s);
|
||
cmdfd = m;
|
||
signal(SIGCHLD, sigchld);
|
||
break;
|
||
}
|
||
}
|
||
|
||
size_t
|
||
ttyread(void)
|
||
{
|
||
static char buf[BUFSIZ];
|
||
static int buflen = 0;
|
||
int written;
|
||
int ret;
|
||
|
||
/* append read bytes to unprocessed bytes */
|
||
if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
|
||
die("Couldn't read from shell: %s\n", strerror(errno));
|
||
buflen += ret;
|
||
|
||
written = twrite(buf, buflen, 0);
|
||
buflen -= written;
|
||
/* keep any uncomplete utf8 char for the next call */
|
||
if (buflen > 0)
|
||
memmove(buf, buf + written, buflen);
|
||
|
||
return ret;
|
||
}
|
||
|
||
void
|
||
ttywrite(const char *s, size_t n, int may_echo)
|
||
{
|
||
const char *next;
|
||
|
||
if (may_echo && IS_SET(MODE_ECHO))
|
||
twrite(s, n, 1);
|
||
|
||
if (!IS_SET(MODE_CRLF)) {
|
||
ttywriteraw(s, n);
|
||
return;
|
||
}
|
||
|
||
/* This is similar to how the kernel handles ONLCR for ttys */
|
||
while (n > 0) {
|
||
if (*s == '\r') {
|
||
next = s + 1;
|
||
ttywriteraw("\r\n", 2);
|
||
} else {
|
||
next = memchr(s, '\r', n);
|
||
DEFAULT(next, s + n);
|
||
ttywriteraw(s, next - s);
|
||
}
|
||
n -= next - s;
|
||
s = next;
|
||
}
|
||
}
|
||
|
||
void
|
||
ttywriteraw(const char *s, size_t n)
|
||
{
|
||
fd_set wfd, rfd;
|
||
ssize_t r;
|
||
size_t lim = 256;
|
||
|
||
/*
|
||
* Remember that we are using a pty, which might be a modem line.
|
||
* Writing too much will clog the line. That's why we are doing this
|
||
* dance.
|
||
* FIXME: Migrate the world to Plan 9.
|
||
*/
|
||
while (n > 0) {
|
||
FD_ZERO(&wfd);
|
||
FD_ZERO(&rfd);
|
||
FD_SET(cmdfd, &wfd);
|
||
FD_SET(cmdfd, &rfd);
|
||
|
||
/* Check if we can write. */
|
||
if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
|
||
if (errno == EINTR)
|
||
continue;
|
||
die("select failed: %s\n", strerror(errno));
|
||
}
|
||
if (FD_ISSET(cmdfd, &wfd)) {
|
||
/*
|
||
* Only write the bytes written by ttywrite() or the
|
||
* default of 256. This seems to be a reasonable value
|
||
* for a serial line. Bigger values might clog the I/O.
|
||
*/
|
||
if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
|
||
goto write_error;
|
||
if (r < n) {
|
||
/*
|
||
* We weren't able to write out everything.
|
||
* This means the buffer is getting full
|
||
* again. Empty it.
|
||
*/
|
||
if (n < lim)
|
||
lim = ttyread();
|
||
n -= r;
|
||
s += r;
|
||
} else {
|
||
/* All bytes have been written. */
|
||
break;
|
||
}
|
||
}
|
||
if (FD_ISSET(cmdfd, &rfd))
|
||
lim = ttyread();
|
||
}
|
||
return;
|
||
|
||
write_error:
|
||
die("write error on tty: %s\n", strerror(errno));
|
||
}
|
||
|
||
void
|
||
ttyresize(int tw, int th)
|
||
{
|
||
struct winsize w;
|
||
|
||
w.ws_row = term.row;
|
||
w.ws_col = term.col;
|
||
w.ws_xpixel = tw;
|
||
w.ws_ypixel = th;
|
||
if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
|
||
fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
|
||
}
|
||
|
||
int
|
||
tattrset(int attr)
|
||
{
|
||
int i, j;
|
||
|
||
for (i = 0; i < term.row-1; i++) {
|
||
for (j = 0; j < term.col-1; j++) {
|
||
if (term.line[i][j].mode & attr)
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
tsetdirt(int top, int bot)
|
||
{
|
||
int i;
|
||
|
||
LIMIT(top, 0, term.row-1);
|
||
LIMIT(bot, 0, term.row-1);
|
||
|
||
for (i = top; i <= bot; i++)
|
||
term.dirty[i] = 1;
|
||
}
|
||
|
||
void
|
||
tsetdirtattr(int attr)
|
||
{
|
||
int i, j;
|
||
|
||
for (i = 0; i < term.row-1; i++) {
|
||
for (j = 0; j < term.col-1; j++) {
|
||
if (term.line[i][j].mode & attr) {
|
||
tsetdirt(i, i);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
tfulldirt(void)
|
||
{
|
||
tsetdirt(0, term.row-1);
|
||
}
|
||
|
||
void
|
||
tcursor(int mode)
|
||
{
|
||
static TCursor c[2];
|
||
int alt = IS_SET(MODE_ALTSCREEN);
|
||
|
||
if (mode == CURSOR_SAVE) {
|
||
c[alt] = term.c;
|
||
} else if (mode == CURSOR_LOAD) {
|
||
term.c = c[alt];
|
||
tmoveto(c[alt].x, c[alt].y);
|
||
}
|
||
}
|
||
|
||
void
|
||
treset(void)
|
||
{
|
||
uint i;
|
||
|
||
term.c = (TCursor){{
|
||
.mode = ATTR_NULL,
|
||
.fg = defaultfg,
|
||
.bg = defaultbg
|
||
}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
|
||
|
||
memset(term.tabs, 0, term.col * sizeof(*term.tabs));
|
||
for (i = tabspaces; i < term.col; i += tabspaces)
|
||
term.tabs[i] = 1;
|
||
term.top = 0;
|
||
term.bot = term.row - 1;
|
||
term.mode = MODE_WRAP|MODE_UTF8;
|
||
memset(term.trantbl, CS_USA, sizeof(term.trantbl));
|
||
term.charset = 0;
|
||
|
||
for (i = 0; i < 2; i++) {
|
||
tmoveto(0, 0);
|
||
tcursor(CURSOR_SAVE);
|
||
tclearregion(0, 0, term.col-1, term.row-1);
|
||
tswapscreen();
|
||
}
|
||
}
|
||
|
||
void
|
||
tnew(int col, int row)
|
||
{
|
||
term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
|
||
tresize(col, row);
|
||
treset();
|
||
}
|
||
|
||
void
|
||
tswapscreen(void)
|
||
{
|
||
Line *tmp = term.line;
|
||
|
||
term.line = term.alt;
|
||
term.alt = tmp;
|
||
term.mode ^= MODE_ALTSCREEN;
|
||
tfulldirt();
|
||
}
|
||
|
||
void
|
||
tscrolldown(int orig, int n)
|
||
{
|
||
int i;
|
||
Line temp;
|
||
|
||
LIMIT(n, 0, term.bot-orig+1);
|
||
|
||
tsetdirt(orig, term.bot-n);
|
||
tclearregion(0, term.bot-n+1, term.col-1, term.bot);
|
||
|
||
for (i = term.bot; i >= orig+n; i--) {
|
||
temp = term.line[i];
|
||
term.line[i] = term.line[i-n];
|
||
term.line[i-n] = temp;
|
||
}
|
||
|
||
selscroll(orig, n);
|
||
}
|
||
|
||
void
|
||
tscrollup(int orig, int n)
|
||
{
|
||
int i;
|
||
Line temp;
|
||
|
||
LIMIT(n, 0, term.bot-orig+1);
|
||
|
||
tclearregion(0, orig, term.col-1, orig+n-1);
|
||
tsetdirt(orig+n, term.bot);
|
||
|
||
for (i = orig; i <= term.bot-n; i++) {
|
||
temp = term.line[i];
|
||
term.line[i] = term.line[i+n];
|
||
term.line[i+n] = temp;
|
||
}
|
||
|
||
selscroll(orig, -n);
|
||
}
|
||
|
||
void
|
||
selscroll(int orig, int n)
|
||
{
|
||
if (sel.ob.x == -1)
|
||
return;
|
||
|
||
if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
|
||
if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
|
||
selclear();
|
||
return;
|
||
}
|
||
if (sel.type == SEL_RECTANGULAR) {
|
||
if (sel.ob.y < term.top)
|
||
sel.ob.y = term.top;
|
||
if (sel.oe.y > term.bot)
|
||
sel.oe.y = term.bot;
|
||
} else {
|
||
if (sel.ob.y < term.top) {
|
||
sel.ob.y = term.top;
|
||
sel.ob.x = 0;
|
||
}
|
||
if (sel.oe.y > term.bot) {
|
||
sel.oe.y = term.bot;
|
||
sel.oe.x = term.col;
|
||
}
|
||
}
|
||
selnormalize();
|
||
}
|
||
}
|
||
|
||
void
|
||
tnewline(int first_col)
|
||
{
|
||
int y = term.c.y;
|
||
|
||
if (y == term.bot) {
|
||
tscrollup(term.top, 1);
|
||
} else {
|
||
y++;
|
||
}
|
||
tmoveto(first_col ? 0 : term.c.x, y);
|
||
}
|
||
|
||
void
|
||
csiparse(void)
|
||
{
|
||
char *p = csiescseq.buf, *np;
|
||
long int v;
|
||
|
||
csiescseq.narg = 0;
|
||
if (*p == '?') {
|
||
csiescseq.priv = 1;
|
||
p++;
|
||
}
|
||
|
||
csiescseq.buf[csiescseq.len] = '\0';
|
||
while (p < csiescseq.buf+csiescseq.len) {
|
||
np = NULL;
|
||
v = strtol(p, &np, 10);
|
||
if (np == p)
|
||
v = 0;
|
||
if (v == LONG_MAX || v == LONG_MIN)
|
||
v = -1;
|
||
csiescseq.arg[csiescseq.narg++] = v;
|
||
p = np;
|
||
if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
|
||
break;
|
||
p++;
|
||
}
|
||
csiescseq.mode[0] = *p++;
|
||
csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
|
||
}
|
||
|
||
/* for absolute user moves, when decom is set */
|
||
void
|
||
tmoveato(int x, int y)
|
||
{
|
||
tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
|
||
}
|
||
|
||
void
|
||
tmoveto(int x, int y)
|
||
{
|
||
int miny, maxy;
|
||
|
||
if (term.c.state & CURSOR_ORIGIN) {
|
||
miny = term.top;
|
||
maxy = term.bot;
|
||
} else {
|
||
miny = 0;
|
||
maxy = term.row - 1;
|
||
}
|
||
term.c.state &= ~CURSOR_WRAPNEXT;
|
||
term.c.x = LIMIT(x, 0, term.col-1);
|
||
term.c.y = LIMIT(y, miny, maxy);
|
||
}
|
||
|
||
void
|
||
tsetchar(Rune u, Glyph *attr, int x, int y)
|
||
{
|
||
static char *vt100_0[62] = { /* 0x41 - 0x7e */
|
||
"↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
|
||
0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
|
||
0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
|
||
0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
|
||
"◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
|
||
"", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
|
||
"⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
|
||
"│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
|
||
};
|
||
|
||
/*
|
||
* The table is proudly stolen from rxvt.
|
||
*/
|
||
if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
|
||
BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
|
||
utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
|
||
|
||
if (term.line[y][x].mode & ATTR_WIDE) {
|
||
if (x+1 < term.col) {
|
||
term.line[y][x+1].u = ' ';
|
||
term.line[y][x+1].mode &= ~ATTR_WDUMMY;
|
||
}
|
||
} else if (term.line[y][x].mode & ATTR_WDUMMY) {
|
||
term.line[y][x-1].u = ' ';
|
||
term.line[y][x-1].mode &= ~ATTR_WIDE;
|
||
}
|
||
|
||
term.dirty[y] = 1;
|
||
term.line[y][x] = *attr;
|
||
term.line[y][x].u = u;
|
||
}
|
||
|
||
void
|
||
tclearregion(int x1, int y1, int x2, int y2)
|
||
{
|
||
int x, y, temp;
|
||
Glyph *gp;
|
||
|
||
if (x1 > x2)
|
||
temp = x1, x1 = x2, x2 = temp;
|
||
if (y1 > y2)
|
||
temp = y1, y1 = y2, y2 = temp;
|
||
|
||
LIMIT(x1, 0, term.col-1);
|
||
LIMIT(x2, 0, term.col-1);
|
||
LIMIT(y1, 0, term.row-1);
|
||
LIMIT(y2, 0, term.row-1);
|
||
|
||
for (y = y1; y <= y2; y++) {
|
||
term.dirty[y] = 1;
|
||
for (x = x1; x <= x2; x++) {
|
||
gp = &term.line[y][x];
|
||
if (selected(x, y))
|
||
selclear();
|
||
gp->fg = term.c.attr.fg;
|
||
gp->bg = term.c.attr.bg;
|
||
gp->mode = 0;
|
||
gp->u = ' ';
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
tdeletechar(int n)
|
||
{
|
||
int dst, src, size;
|
||
Glyph *line;
|
||
|
||
LIMIT(n, 0, term.col - term.c.x);
|
||
|
||
dst = term.c.x;
|
||
src = term.c.x + n;
|
||
size = term.col - src;
|
||
line = term.line[term.c.y];
|
||
|
||
memmove(&line[dst], &line[src], size * sizeof(Glyph));
|
||
tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
|
||
}
|
||
|
||
void
|
||
tinsertblank(int n)
|
||
{
|
||
int dst, src, size;
|
||
Glyph *line;
|
||
|
||
LIMIT(n, 0, term.col - term.c.x);
|
||
|
||
dst = term.c.x + n;
|
||
src = term.c.x;
|
||
size = term.col - dst;
|
||
line = term.line[term.c.y];
|
||
|
||
memmove(&line[dst], &line[src], size * sizeof(Glyph));
|
||
tclearregion(src, term.c.y, dst - 1, term.c.y);
|
||
}
|
||
|
||
void
|
||
tinsertblankline(int n)
|
||
{
|
||
if (BETWEEN(term.c.y, term.top, term.bot))
|
||
tscrolldown(term.c.y, n);
|
||
}
|
||
|
||
void
|
||
tdeleteline(int n)
|
||
{
|
||
if (BETWEEN(term.c.y, term.top, term.bot))
|
||
tscrollup(term.c.y, n);
|
||
}
|
||
|
||
int32_t
|
||
tdefcolor(int *attr, int *npar, int l)
|
||
{
|
||
int32_t idx = -1;
|
||
uint r, g, b;
|
||
|
||
switch (attr[*npar + 1]) {
|
||
case 2: /* direct color in RGB space */
|
||
if (*npar + 4 >= l) {
|
||
fprintf(stderr,
|
||
"erresc(38): Incorrect number of parameters (%d)\n",
|
||
*npar);
|
||
break;
|
||
}
|
||
r = attr[*npar + 2];
|
||
g = attr[*npar + 3];
|
||
b = attr[*npar + 4];
|
||
*npar += 4;
|
||
if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
|
||
fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
|
||
r, g, b);
|
||
else
|
||
idx = TRUECOLOR(r, g, b);
|
||
break;
|
||
case 5: /* indexed color */
|
||
if (*npar + 2 >= l) {
|
||
fprintf(stderr,
|
||
"erresc(38): Incorrect number of parameters (%d)\n",
|
||
*npar);
|
||
break;
|
||
}
|
||
*npar += 2;
|
||
if (!BETWEEN(attr[*npar], 0, 255))
|
||
fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
|
||
else
|
||
idx = attr[*npar];
|
||
break;
|
||
case 0: /* implemented defined (only foreground) */
|
||
case 1: /* transparent */
|
||
case 3: /* direct color in CMY space */
|
||
case 4: /* direct color in CMYK space */
|
||
default:
|
||
fprintf(stderr,
|
||
"erresc(38): gfx attr %d unknown\n", attr[*npar]);
|
||
break;
|
||
}
|
||
|
||
return idx;
|
||
}
|
||
|
||
void
|
||
tsetattr(int *attr, int l)
|
||
{
|
||
int i;
|
||
int32_t idx;
|
||
|
||
for (i = 0; i < l; i++) {
|
||
switch (attr[i]) {
|
||
case 0:
|
||
term.c.attr.mode &= ~(
|
||
ATTR_BOLD |
|
||
ATTR_FAINT |
|
||
ATTR_ITALIC |
|
||
ATTR_UNDERLINE |
|
||
ATTR_BLINK |
|
||
ATTR_REVERSE |
|
||
ATTR_INVISIBLE |
|
||
ATTR_STRUCK );
|
||
term.c.attr.fg = defaultfg;
|
||
term.c.attr.bg = defaultbg;
|
||
break;
|
||
case 1:
|
||
term.c.attr.mode |= ATTR_BOLD;
|
||
break;
|
||
case 2:
|
||
term.c.attr.mode |= ATTR_FAINT;
|
||
break;
|
||
case 3:
|
||
term.c.attr.mode |= ATTR_ITALIC;
|
||
break;
|
||
case 4:
|
||
term.c.attr.mode |= ATTR_UNDERLINE;
|
||
break;
|
||
case 5: /* slow blink */
|
||
/* FALLTHROUGH */
|
||
case 6: /* rapid blink */
|
||
term.c.attr.mode |= ATTR_BLINK;
|
||
break;
|
||
case 7:
|
||
term.c.attr.mode |= ATTR_REVERSE;
|
||
break;
|
||
case 8:
|
||
term.c.attr.mode |= ATTR_INVISIBLE;
|
||
break;
|
||
case 9:
|
||
term.c.attr.mode |= ATTR_STRUCK;
|
||
break;
|
||
case 22:
|
||
term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
|
||
break;
|
||
case 23:
|
||
term.c.attr.mode &= ~ATTR_ITALIC;
|
||
break;
|
||
case 24:
|
||
term.c.attr.mode &= ~ATTR_UNDERLINE;
|
||
break;
|
||
case 25:
|
||
term.c.attr.mode &= ~ATTR_BLINK;
|
||
break;
|
||
case 27:
|
||
term.c.attr.mode &= ~ATTR_REVERSE;
|
||
break;
|
||
case 28:
|
||
term.c.attr.mode &= ~ATTR_INVISIBLE;
|
||
break;
|
||
case 29:
|
||
term.c.attr.mode &= ~ATTR_STRUCK;
|
||
break;
|
||
case 38:
|
||
if ((idx = tdefcolor(attr, &i, l)) >= 0)
|
||
term.c.attr.fg = idx;
|
||
break;
|
||
case 39:
|
||
term.c.attr.fg = defaultfg;
|
||
break;
|
||
case 48:
|
||
if ((idx = tdefcolor(attr, &i, l)) >= 0)
|
||
term.c.attr.bg = idx;
|
||
break;
|
||
case 49:
|
||
term.c.attr.bg = defaultbg;
|
||
break;
|
||
default:
|
||
if (BETWEEN(attr[i], 30, 37)) {
|
||
term.c.attr.fg = attr[i] - 30;
|
||
} else if (BETWEEN(attr[i], 40, 47)) {
|
||
term.c.attr.bg = attr[i] - 40;
|
||
} else if (BETWEEN(attr[i], 90, 97)) {
|
||
term.c.attr.fg = attr[i] - 90 + 8;
|
||
} else if (BETWEEN(attr[i], 100, 107)) {
|
||
term.c.attr.bg = attr[i] - 100 + 8;
|
||
} else {
|
||
fprintf(stderr,
|
||
"erresc(default): gfx attr %d unknown\n",
|
||
attr[i]), csidump();
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
tsetscroll(int t, int b)
|
||
{
|
||
int temp;
|
||
|
||
LIMIT(t, 0, term.row-1);
|
||
LIMIT(b, 0, term.row-1);
|
||
if (t > b) {
|
||
temp = t;
|
||
t = b;
|
||
b = temp;
|
||
}
|
||
term.top = t;
|
||
term.bot = b;
|
||
}
|
||
|
||
void
|
||
tsetmode(int priv, int set, int *args, int narg)
|
||
{
|
||
int alt, *lim;
|
||
|
||
for (lim = args + narg; args < lim; ++args) {
|
||
if (priv) {
|
||
switch (*args) {
|
||
case 1: /* DECCKM -- Cursor key */
|
||
xsetmode(set, MODE_APPCURSOR);
|
||
break;
|
||
case 5: /* DECSCNM -- Reverse video */
|
||
xsetmode(set, MODE_REVERSE);
|
||
break;
|
||
case 6: /* DECOM -- Origin */
|
||
MODBIT(term.c.state, set, CURSOR_ORIGIN);
|
||
tmoveato(0, 0);
|
||
break;
|
||
case 7: /* DECAWM -- Auto wrap */
|
||
MODBIT(term.mode, set, MODE_WRAP);
|
||
break;
|
||
case 0: /* Error (IGNORED) */
|
||
case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
|
||
case 3: /* DECCOLM -- Column (IGNORED) */
|
||
case 4: /* DECSCLM -- Scroll (IGNORED) */
|
||
case 8: /* DECARM -- Auto repeat (IGNORED) */
|
||
case 18: /* DECPFF -- Printer feed (IGNORED) */
|
||
case 19: /* DECPEX -- Printer extent (IGNORED) */
|
||
case 42: /* DECNRCM -- National characters (IGNORED) */
|
||
case 12: /* att610 -- Start blinking cursor (IGNORED) */
|
||
break;
|
||
case 25: /* DECTCEM -- Text Cursor Enable Mode */
|
||
xsetmode(!set, MODE_HIDE);
|
||
break;
|
||
case 9: /* X10 mouse compatibility mode */
|
||
xsetpointermotion(0);
|
||
xsetmode(0, MODE_MOUSE);
|
||
xsetmode(set, MODE_MOUSEX10);
|
||
break;
|
||
case 1000: /* 1000: report button press */
|
||
xsetpointermotion(0);
|
||
xsetmode(0, MODE_MOUSE);
|
||
xsetmode(set, MODE_MOUSEBTN);
|
||
break;
|
||
case 1002: /* 1002: report motion on button press */
|
||
xsetpointermotion(0);
|
||
xsetmode(0, MODE_MOUSE);
|
||
xsetmode(set, MODE_MOUSEMOTION);
|
||
break;
|
||
case 1003: /* 1003: enable all mouse motions */
|
||
xsetpointermotion(set);
|
||
xsetmode(0, MODE_MOUSE);
|
||
xsetmode(set, MODE_MOUSEMANY);
|
||
break;
|
||
case 1004: /* 1004: send focus events to tty */
|
||
xsetmode(set, MODE_FOCUS);
|
||
break;
|
||
case 1006: /* 1006: extended reporting mode */
|
||
xsetmode(set, MODE_MOUSESGR);
|
||
break;
|
||
case 1034:
|
||
xsetmode(set, MODE_8BIT);
|
||
break;
|
||
case 1049: /* swap screen & set/restore cursor as xterm */
|
||
if (!allowaltscreen)
|
||
break;
|
||
tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
|
||
/* FALLTHROUGH */
|
||
case 47: /* swap screen */
|
||
case 1047:
|
||
if (!allowaltscreen)
|
||
break;
|
||
alt = IS_SET(MODE_ALTSCREEN);
|
||
if (alt) {
|
||
tclearregion(0, 0, term.col-1,
|
||
term.row-1);
|
||
}
|
||
if (set ^ alt) /* set is always 1 or 0 */
|
||
tswapscreen();
|
||
if (*args != 1049)
|
||
break;
|
||
/* FALLTHROUGH */
|
||
case 1048:
|
||
tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
|
||
break;
|
||
case 2004: /* 2004: bracketed paste mode */
|
||
xsetmode(set, MODE_BRCKTPASTE);
|
||
break;
|
||
/* Not implemented mouse modes. See comments there. */
|
||
case 1001: /* mouse highlight mode; can hang the
|
||
terminal by design when implemented. */
|
||
case 1005: /* UTF-8 mouse mode; will confuse
|
||
applications not supporting UTF-8
|
||
and luit. */
|
||
case 1015: /* urxvt mangled mouse mode; incompatible
|
||
and can be mistaken for other control
|
||
codes. */
|
||
default:
|
||
fprintf(stderr,
|
||
"erresc: unknown private set/reset mode %d\n",
|
||
*args);
|
||
break;
|
||
}
|
||
} else {
|
||
switch (*args) {
|
||
case 0: /* Error (IGNORED) */
|
||
break;
|
||
case 2:
|
||
xsetmode(set, MODE_KBDLOCK);
|
||
break;
|
||
case 4: /* IRM -- Insertion-replacement */
|
||
MODBIT(term.mode, set, MODE_INSERT);
|
||
break;
|
||
case 12: /* SRM -- Send/Receive */
|
||
MODBIT(term.mode, !set, MODE_ECHO);
|
||
break;
|
||
case 20: /* LNM -- Linefeed/new line */
|
||
MODBIT(term.mode, set, MODE_CRLF);
|
||
break;
|
||
default:
|
||
fprintf(stderr,
|
||
"erresc: unknown set/reset mode %d\n",
|
||
*args);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
csihandle(void)
|
||
{
|
||
char buf[40];
|
||
int len;
|
||
|
||
switch (csiescseq.mode[0]) {
|
||
default:
|
||
unknown:
|
||
fprintf(stderr, "erresc: unknown csi ");
|
||
csidump();
|
||
/* die(""); */
|
||
break;
|
||
case '@': /* ICH -- Insert <n> blank char */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tinsertblank(csiescseq.arg[0]);
|
||
break;
|
||
case 'A': /* CUU -- Cursor <n> Up */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
|
||
break;
|
||
case 'B': /* CUD -- Cursor <n> Down */
|
||
case 'e': /* VPR --Cursor <n> Down */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
|
||
break;
|
||
case 'i': /* MC -- Media Copy */
|
||
switch (csiescseq.arg[0]) {
|
||
case 0:
|
||
tdump();
|
||
break;
|
||
case 1:
|
||
tdumpline(term.c.y);
|
||
break;
|
||
case 2:
|
||
tdumpsel();
|
||
break;
|
||
case 4:
|
||
term.mode &= ~MODE_PRINT;
|
||
break;
|
||
case 5:
|
||
term.mode |= MODE_PRINT;
|
||
break;
|
||
}
|
||
break;
|
||
case 'c': /* DA -- Device Attributes */
|
||
if (csiescseq.arg[0] == 0)
|
||
ttywrite(vtiden, strlen(vtiden), 0);
|
||
break;
|
||
case 'C': /* CUF -- Cursor <n> Forward */
|
||
case 'a': /* HPR -- Cursor <n> Forward */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
|
||
break;
|
||
case 'D': /* CUB -- Cursor <n> Backward */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
|
||
break;
|
||
case 'E': /* CNL -- Cursor <n> Down and first col */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(0, term.c.y+csiescseq.arg[0]);
|
||
break;
|
||
case 'F': /* CPL -- Cursor <n> Up and first col */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(0, term.c.y-csiescseq.arg[0]);
|
||
break;
|
||
case 'g': /* TBC -- Tabulation clear */
|
||
switch (csiescseq.arg[0]) {
|
||
case 0: /* clear current tab stop */
|
||
term.tabs[term.c.x] = 0;
|
||
break;
|
||
case 3: /* clear all the tabs */
|
||
memset(term.tabs, 0, term.col * sizeof(*term.tabs));
|
||
break;
|
||
default:
|
||
goto unknown;
|
||
}
|
||
break;
|
||
case 'G': /* CHA -- Move to <col> */
|
||
case '`': /* HPA */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveto(csiescseq.arg[0]-1, term.c.y);
|
||
break;
|
||
case 'H': /* CUP -- Move to <row> <col> */
|
||
case 'f': /* HVP */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
DEFAULT(csiescseq.arg[1], 1);
|
||
tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
|
||
break;
|
||
case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tputtab(csiescseq.arg[0]);
|
||
break;
|
||
case 'J': /* ED -- Clear screen */
|
||
selclear();
|
||
switch (csiescseq.arg[0]) {
|
||
case 0: /* below */
|
||
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
|
||
if (term.c.y < term.row-1) {
|
||
tclearregion(0, term.c.y+1, term.col-1,
|
||
term.row-1);
|
||
}
|
||
break;
|
||
case 1: /* above */
|
||
if (term.c.y > 1)
|
||
tclearregion(0, 0, term.col-1, term.c.y-1);
|
||
tclearregion(0, term.c.y, term.c.x, term.c.y);
|
||
break;
|
||
case 2: /* all */
|
||
tclearregion(0, 0, term.col-1, term.row-1);
|
||
break;
|
||
default:
|
||
goto unknown;
|
||
}
|
||
break;
|
||
case 'K': /* EL -- Clear line */
|
||
switch (csiescseq.arg[0]) {
|
||
case 0: /* right */
|
||
tclearregion(term.c.x, term.c.y, term.col-1,
|
||
term.c.y);
|
||
break;
|
||
case 1: /* left */
|
||
tclearregion(0, term.c.y, term.c.x, term.c.y);
|
||
break;
|
||
case 2: /* all */
|
||
tclearregion(0, term.c.y, term.col-1, term.c.y);
|
||
break;
|
||
}
|
||
break;
|
||
case 'S': /* SU -- Scroll <n> line up */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tscrollup(term.top, csiescseq.arg[0]);
|
||
break;
|
||
case 'T': /* SD -- Scroll <n> line down */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tscrolldown(term.top, csiescseq.arg[0]);
|
||
break;
|
||
case 'L': /* IL -- Insert <n> blank lines */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tinsertblankline(csiescseq.arg[0]);
|
||
break;
|
||
case 'l': /* RM -- Reset Mode */
|
||
tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
|
||
break;
|
||
case 'M': /* DL -- Delete <n> lines */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tdeleteline(csiescseq.arg[0]);
|
||
break;
|
||
case 'X': /* ECH -- Erase <n> char */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tclearregion(term.c.x, term.c.y,
|
||
term.c.x + csiescseq.arg[0] - 1, term.c.y);
|
||
break;
|
||
case 'P': /* DCH -- Delete <n> char */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tdeletechar(csiescseq.arg[0]);
|
||
break;
|
||
case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tputtab(-csiescseq.arg[0]);
|
||
break;
|
||
case 'd': /* VPA -- Move to <row> */
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
tmoveato(term.c.x, csiescseq.arg[0]-1);
|
||
break;
|
||
case 'h': /* SM -- Set terminal mode */
|
||
tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
|
||
break;
|
||
case 'm': /* SGR -- Terminal attribute (color) */
|
||
tsetattr(csiescseq.arg, csiescseq.narg);
|
||
break;
|
||
case 'n': /* DSR – Device Status Report (cursor position) */
|
||
if (csiescseq.arg[0] == 6) {
|
||
len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
|
||
term.c.y+1, term.c.x+1);
|
||
ttywrite(buf, len, 0);
|
||
}
|
||
break;
|
||
case 'r': /* DECSTBM -- Set Scrolling Region */
|
||
if (csiescseq.priv) {
|
||
goto unknown;
|
||
} else {
|
||
DEFAULT(csiescseq.arg[0], 1);
|
||
DEFAULT(csiescseq.arg[1], term.row);
|
||
tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
|
||
tmoveato(0, 0);
|
||
}
|
||
break;
|
||
case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
|
||
tcursor(CURSOR_SAVE);
|
||
break;
|
||
case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
|
||
tcursor(CURSOR_LOAD);
|
||
break;
|
||
case ' ':
|
||
switch (csiescseq.mode[1]) {
|
||
case 'q': /* DECSCUSR -- Set Cursor Style */
|
||
if (xsetcursor(csiescseq.arg[0]))
|
||
goto unknown;
|
||
break;
|
||
default:
|
||
goto unknown;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
void
|
||
csidump(void)
|
||
{
|
||
int i;
|
||
uint c;
|
||
|
||
fprintf(stderr, "ESC[");
|
||
for (i = 0; i < csiescseq.len; i++) {
|
||
c = csiescseq.buf[i] & 0xff;
|
||
if (isprint(c)) {
|
||
putc(c, stderr);
|
||
} else if (c == '\n') {
|
||
fprintf(stderr, "(\\n)");
|
||
} else if (c == '\r') {
|
||
fprintf(stderr, "(\\r)");
|
||
} else if (c == 0x1b) {
|
||
fprintf(stderr, "(\\e)");
|
||
} else {
|
||
fprintf(stderr, "(%02x)", c);
|
||
}
|
||
}
|
||
putc('\n', stderr);
|
||
}
|
||
|
||
void
|
||
csireset(void)
|
||
{
|
||
memset(&csiescseq, 0, sizeof(csiescseq));
|
||
}
|
||
|
||
void
|
||
strhandle(void)
|
||
{
|
||
char *p = NULL;
|
||
int j, narg, par;
|
||
|
||
term.esc &= ~(ESC_STR_END|ESC_STR);
|
||
strparse();
|
||
par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
|
||
|
||
switch (strescseq.type) {
|
||
case ']': /* OSC -- Operating System Command */
|
||
switch (par) {
|
||
case 0:
|
||
case 1:
|
||
case 2:
|
||
if (narg > 1)
|
||
xsettitle(strescseq.args[1]);
|
||
return;
|
||
case 52:
|
||
if (narg > 2) {
|
||
char *dec;
|
||
|
||
dec = base64dec(strescseq.args[2]);
|
||
if (dec) {
|
||
xsetsel(dec);
|
||
xclipcopy();
|
||
} else {
|
||
fprintf(stderr, "erresc: invalid base64\n");
|
||
}
|
||
}
|
||
return;
|
||
case 4: /* color set */
|
||
if (narg < 3)
|
||
break;
|
||
p = strescseq.args[2];
|
||
/* FALLTHROUGH */
|
||
case 104: /* color reset, here p = NULL */
|
||
j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
|
||
if (xsetcolorname(j, p)) {
|
||
fprintf(stderr, "erresc: invalid color %s\n", p);
|
||
} else {
|
||
/*
|
||
* TODO if defaultbg color is changed, borders
|
||
* are dirty
|
||
*/
|
||
redraw();
|
||
}
|
||
return;
|
||
}
|
||
break;
|
||
case 'k': /* old title set compatibility */
|
||
xsettitle(strescseq.args[0]);
|
||
return;
|
||
case 'P': /* DCS -- Device Control String */
|
||
term.mode |= ESC_DCS;
|
||
case '_': /* APC -- Application Program Command */
|
||
case '^': /* PM -- Privacy Message */
|
||
return;
|
||
}
|
||
|
||
fprintf(stderr, "erresc: unknown str ");
|
||
strdump();
|
||
}
|
||
|
||
void
|
||
strparse(void)
|
||
{
|
||
int c;
|
||
char *p = strescseq.buf;
|
||
|
||
strescseq.narg = 0;
|
||
strescseq.buf[strescseq.len] = '\0';
|
||
|
||
if (*p == '\0')
|
||
return;
|
||
|
||
while (strescseq.narg < STR_ARG_SIZ) {
|
||
strescseq.args[strescseq.narg++] = p;
|
||
while ((c = *p) != ';' && c != '\0')
|
||
++p;
|
||
if (c == '\0')
|
||
return;
|
||
*p++ = '\0';
|
||
}
|
||
}
|
||
|
||
void
|
||
strdump(void)
|
||
{
|
||
int i;
|
||
uint c;
|
||
|
||
fprintf(stderr, "ESC%c", strescseq.type);
|
||
for (i = 0; i < strescseq.len; i++) {
|
||
c = strescseq.buf[i] & 0xff;
|
||
if (c == '\0') {
|
||
putc('\n', stderr);
|
||
return;
|
||
} else if (isprint(c)) {
|
||
putc(c, stderr);
|
||
} else if (c == '\n') {
|
||
fprintf(stderr, "(\\n)");
|
||
} else if (c == '\r') {
|
||
fprintf(stderr, "(\\r)");
|
||
} else if (c == 0x1b) {
|
||
fprintf(stderr, "(\\e)");
|
||
} else {
|
||
fprintf(stderr, "(%02x)", c);
|
||
}
|
||
}
|
||
fprintf(stderr, "ESC\\\n");
|
||
}
|
||
|
||
void
|
||
strreset(void)
|
||
{
|
||
memset(&strescseq, 0, sizeof(strescseq));
|
||
}
|
||
|
||
void
|
||
sendbreak(const Arg *arg)
|
||
{
|
||
if (tcsendbreak(cmdfd, 0))
|
||
perror("Error sending break");
|
||
}
|
||
|
||
void
|
||
tprinter(char *s, size_t len)
|
||
{
|
||
if (iofd != -1 && xwrite(iofd, s, len) < 0) {
|
||
perror("Error writing to output file");
|
||
close(iofd);
|
||
iofd = -1;
|
||
}
|
||
}
|
||
|
||
void
|
||
iso14755(const Arg *arg)
|
||
{
|
||
FILE *p;
|
||
char *us, *e, codepoint[9], uc[UTF_SIZ];
|
||
unsigned long utf32;
|
||
|
||
if (!(p = popen(ISO14755CMD, "r")))
|
||
return;
|
||
|
||
us = fgets(codepoint, sizeof(codepoint), p);
|
||
pclose(p);
|
||
|
||
if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
|
||
return;
|
||
if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
|
||
(*e != '\n' && *e != '\0'))
|
||
return;
|
||
|
||
ttywrite(uc, utf8encode(utf32, uc), 1);
|
||
}
|
||
|
||
void
|
||
toggleprinter(const Arg *arg)
|
||
{
|
||
term.mode ^= MODE_PRINT;
|
||
}
|
||
|
||
void
|
||
printscreen(const Arg *arg)
|
||
{
|
||
tdump();
|
||
}
|
||
|
||
void
|
||
printsel(const Arg *arg)
|
||
{
|
||
tdumpsel();
|
||
}
|
||
|
||
void
|
||
tdumpsel(void)
|
||
{
|
||
char *ptr;
|
||
|
||
if ((ptr = getsel())) {
|
||
tprinter(ptr, strlen(ptr));
|
||
free(ptr);
|
||
}
|
||
}
|
||
|
||
void
|
||
tdumpline(int n)
|
||
{
|
||
char buf[UTF_SIZ];
|
||
Glyph *bp, *end;
|
||
|
||
bp = &term.line[n][0];
|
||
end = &bp[MIN(tlinelen(n), term.col) - 1];
|
||
if (bp != end || bp->u != ' ') {
|
||
for ( ;bp <= end; ++bp)
|
||
tprinter(buf, utf8encode(bp->u, buf));
|
||
}
|
||
tprinter("\n", 1);
|
||
}
|
||
|
||
void
|
||
tdump(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < term.row; ++i)
|
||
tdumpline(i);
|
||
}
|
||
|
||
void
|
||
tputtab(int n)
|
||
{
|
||
uint x = term.c.x;
|
||
|
||
if (n > 0) {
|
||
while (x < term.col && n--)
|
||
for (++x; x < term.col && !term.tabs[x]; ++x)
|
||
/* nothing */ ;
|
||
} else if (n < 0) {
|
||
while (x > 0 && n++)
|
||
for (--x; x > 0 && !term.tabs[x]; --x)
|
||
/* nothing */ ;
|
||
}
|
||
term.c.x = LIMIT(x, 0, term.col-1);
|
||
}
|
||
|
||
void
|
||
tdefutf8(char ascii)
|
||
{
|
||
if (ascii == 'G')
|
||
term.mode |= MODE_UTF8;
|
||
else if (ascii == '@')
|
||
term.mode &= ~MODE_UTF8;
|
||
}
|
||
|
||
void
|
||
tdeftran(char ascii)
|
||
{
|
||
static char cs[] = "0B";
|
||
static int vcs[] = {CS_GRAPHIC0, CS_USA};
|
||
char *p;
|
||
|
||
if ((p = strchr(cs, ascii)) == NULL) {
|
||
fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
|
||
} else {
|
||
term.trantbl[term.icharset] = vcs[p - cs];
|
||
}
|
||
}
|
||
|
||
void
|
||
tdectest(char c)
|
||
{
|
||
int x, y;
|
||
|
||
if (c == '8') { /* DEC screen alignment test. */
|
||
for (x = 0; x < term.col; ++x) {
|
||
for (y = 0; y < term.row; ++y)
|
||
tsetchar('E', &term.c.attr, x, y);
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
tstrsequence(uchar c)
|
||
{
|
||
strreset();
|
||
|
||
switch (c) {
|
||
case 0x90: /* DCS -- Device Control String */
|
||
c = 'P';
|
||
term.esc |= ESC_DCS;
|
||
break;
|
||
case 0x9f: /* APC -- Application Program Command */
|
||
c = '_';
|
||
break;
|
||
case 0x9e: /* PM -- Privacy Message */
|
||
c = '^';
|
||
break;
|
||
case 0x9d: /* OSC -- Operating System Command */
|
||
c = ']';
|
||
break;
|
||
}
|
||
strescseq.type = c;
|
||
term.esc |= ESC_STR;
|
||
}
|
||
|
||
void
|
||
tcontrolcode(uchar ascii)
|
||
{
|
||
switch (ascii) {
|
||
case '\t': /* HT */
|
||
tputtab(1);
|
||
return;
|
||
case '\b': /* BS */
|
||
tmoveto(term.c.x-1, term.c.y);
|
||
return;
|
||
case '\r': /* CR */
|
||
tmoveto(0, term.c.y);
|
||
return;
|
||
case '\f': /* LF */
|
||
case '\v': /* VT */
|
||
case '\n': /* LF */
|
||
/* go to first col if the mode is set */
|
||
tnewline(IS_SET(MODE_CRLF));
|
||
return;
|
||
case '\a': /* BEL */
|
||
if (term.esc & ESC_STR_END) {
|
||
/* backwards compatibility to xterm */
|
||
strhandle();
|
||
} else {
|
||
xbell();
|
||
}
|
||
break;
|
||
case '\033': /* ESC */
|
||
csireset();
|
||
term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
|
||
term.esc |= ESC_START;
|
||
return;
|
||
case '\016': /* SO (LS1 -- Locking shift 1) */
|
||
case '\017': /* SI (LS0 -- Locking shift 0) */
|
||
term.charset = 1 - (ascii - '\016');
|
||
return;
|
||
case '\032': /* SUB */
|
||
tsetchar('?', &term.c.attr, term.c.x, term.c.y);
|
||
case '\030': /* CAN */
|
||
csireset();
|
||
break;
|
||
case '\005': /* ENQ (IGNORED) */
|
||
case '\000': /* NUL (IGNORED) */
|
||
case '\021': /* XON (IGNORED) */
|
||
case '\023': /* XOFF (IGNORED) */
|
||
case 0177: /* DEL (IGNORED) */
|
||
return;
|
||
case 0x80: /* TODO: PAD */
|
||
case 0x81: /* TODO: HOP */
|
||
case 0x82: /* TODO: BPH */
|
||
case 0x83: /* TODO: NBH */
|
||
case 0x84: /* TODO: IND */
|
||
break;
|
||
case 0x85: /* NEL -- Next line */
|
||
tnewline(1); /* always go to first col */
|
||
break;
|
||
case 0x86: /* TODO: SSA */
|
||
case 0x87: /* TODO: ESA */
|
||
break;
|
||
case 0x88: /* HTS -- Horizontal tab stop */
|
||
term.tabs[term.c.x] = 1;
|
||
break;
|
||
case 0x89: /* TODO: HTJ */
|
||
case 0x8a: /* TODO: VTS */
|
||
case 0x8b: /* TODO: PLD */
|
||
case 0x8c: /* TODO: PLU */
|
||
case 0x8d: /* TODO: RI */
|
||
case 0x8e: /* TODO: SS2 */
|
||
case 0x8f: /* TODO: SS3 */
|
||
case 0x91: /* TODO: PU1 */
|
||
case 0x92: /* TODO: PU2 */
|
||
case 0x93: /* TODO: STS */
|
||
case 0x94: /* TODO: CCH */
|
||
case 0x95: /* TODO: MW */
|
||
case 0x96: /* TODO: SPA */
|
||
case 0x97: /* TODO: EPA */
|
||
case 0x98: /* TODO: SOS */
|
||
case 0x99: /* TODO: SGCI */
|
||
break;
|
||
case 0x9a: /* DECID -- Identify Terminal */
|
||
ttywrite(vtiden, strlen(vtiden), 0);
|
||
break;
|
||
case 0x9b: /* TODO: CSI */
|
||
case 0x9c: /* TODO: ST */
|
||
break;
|
||
case 0x90: /* DCS -- Device Control String */
|
||
case 0x9d: /* OSC -- Operating System Command */
|
||
case 0x9e: /* PM -- Privacy Message */
|
||
case 0x9f: /* APC -- Application Program Command */
|
||
tstrsequence(ascii);
|
||
return;
|
||
}
|
||
/* only CAN, SUB, \a and C1 chars interrupt a sequence */
|
||
term.esc &= ~(ESC_STR_END|ESC_STR);
|
||
}
|
||
|
||
/*
|
||
* returns 1 when the sequence is finished and it hasn't to read
|
||
* more characters for this sequence, otherwise 0
|
||
*/
|
||
int
|
||
eschandle(uchar ascii)
|
||
{
|
||
switch (ascii) {
|
||
case '[':
|
||
term.esc |= ESC_CSI;
|
||
return 0;
|
||
case '#':
|
||
term.esc |= ESC_TEST;
|
||
return 0;
|
||
case '%':
|
||
term.esc |= ESC_UTF8;
|
||
return 0;
|
||
case 'P': /* DCS -- Device Control String */
|
||
case '_': /* APC -- Application Program Command */
|
||
case '^': /* PM -- Privacy Message */
|
||
case ']': /* OSC -- Operating System Command */
|
||
case 'k': /* old title set compatibility */
|
||
tstrsequence(ascii);
|
||
return 0;
|
||
case 'n': /* LS2 -- Locking shift 2 */
|
||
case 'o': /* LS3 -- Locking shift 3 */
|
||
term.charset = 2 + (ascii - 'n');
|
||
break;
|
||
case '(': /* GZD4 -- set primary charset G0 */
|
||
case ')': /* G1D4 -- set secondary charset G1 */
|
||
case '*': /* G2D4 -- set tertiary charset G2 */
|
||
case '+': /* G3D4 -- set quaternary charset G3 */
|
||
term.icharset = ascii - '(';
|
||
term.esc |= ESC_ALTCHARSET;
|
||
return 0;
|
||
case 'D': /* IND -- Linefeed */
|
||
if (term.c.y == term.bot) {
|
||
tscrollup(term.top, 1);
|
||
} else {
|
||
tmoveto(term.c.x, term.c.y+1);
|
||
}
|
||
break;
|
||
case 'E': /* NEL -- Next line */
|
||
tnewline(1); /* always go to first col */
|
||
break;
|
||
case 'H': /* HTS -- Horizontal tab stop */
|
||
term.tabs[term.c.x] = 1;
|
||
break;
|
||
case 'M': /* RI -- Reverse index */
|
||
if (term.c.y == term.top) {
|
||
tscrolldown(term.top, 1);
|
||
} else {
|
||
tmoveto(term.c.x, term.c.y-1);
|
||
}
|
||
break;
|
||
case 'Z': /* DECID -- Identify Terminal */
|
||
ttywrite(vtiden, strlen(vtiden), 0);
|
||
break;
|
||
case 'c': /* RIS -- Reset to inital state */
|
||
treset();
|
||
resettitle();
|
||
xloadcols();
|
||
break;
|
||
case '=': /* DECPAM -- Application keypad */
|
||
xsetmode(1, MODE_APPKEYPAD);
|
||
break;
|
||
case '>': /* DECPNM -- Normal keypad */
|
||
xsetmode(0, MODE_APPKEYPAD);
|
||
break;
|
||
case '7': /* DECSC -- Save Cursor */
|
||
tcursor(CURSOR_SAVE);
|
||
break;
|
||
case '8': /* DECRC -- Restore Cursor */
|
||
tcursor(CURSOR_LOAD);
|
||
break;
|
||
case '\\': /* ST -- String Terminator */
|
||
if (term.esc & ESC_STR_END)
|
||
strhandle();
|
||
break;
|
||
default:
|
||
fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
|
||
(uchar) ascii, isprint(ascii)? ascii:'.');
|
||
break;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
tputc(Rune u)
|
||
{
|
||
char c[UTF_SIZ];
|
||
int control;
|
||
int width, len;
|
||
Glyph *gp;
|
||
|
||
control = ISCONTROL(u);
|
||
if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
|
||
c[0] = u;
|
||
width = len = 1;
|
||
} else {
|
||
len = utf8encode(u, c);
|
||
if (!control && (width = wcwidth(u)) == -1) {
|
||
memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
|
||
width = 1;
|
||
}
|
||
}
|
||
|
||
if (IS_SET(MODE_PRINT))
|
||
tprinter(c, len);
|
||
|
||
/*
|
||
* STR sequence must be checked before anything else
|
||
* because it uses all following characters until it
|
||
* receives a ESC, a SUB, a ST or any other C1 control
|
||
* character.
|
||
*/
|
||
if (term.esc & ESC_STR) {
|
||
if (u == '\a' || u == 030 || u == 032 || u == 033 ||
|
||
ISCONTROLC1(u)) {
|
||
term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
|
||
if (IS_SET(MODE_SIXEL)) {
|
||
/* TODO: render sixel */;
|
||
term.mode &= ~MODE_SIXEL;
|
||
return;
|
||
}
|
||
term.esc |= ESC_STR_END;
|
||
goto check_control_code;
|
||
}
|
||
|
||
|
||
if (IS_SET(MODE_SIXEL)) {
|
||
/* TODO: implement sixel mode */
|
||
return;
|
||
}
|
||
if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
|
||
term.mode |= MODE_SIXEL;
|
||
|
||
if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
|
||
/*
|
||
* Here is a bug in terminals. If the user never sends
|
||
* some code to stop the str or esc command, then st
|
||
* will stop responding. But this is better than
|
||
* silently failing with unknown characters. At least
|
||
* then users will report back.
|
||
*
|
||
* In the case users ever get fixed, here is the code:
|
||
*/
|
||
/*
|
||
* term.esc = 0;
|
||
* strhandle();
|
||
*/
|
||
return;
|
||
}
|
||
|
||
memmove(&strescseq.buf[strescseq.len], c, len);
|
||
strescseq.len += len;
|
||
return;
|
||
}
|
||
|
||
check_control_code:
|
||
/*
|
||
* Actions of control codes must be performed as soon they arrive
|
||
* because they can be embedded inside a control sequence, and
|
||
* they must not cause conflicts with sequences.
|
||
*/
|
||
if (control) {
|
||
tcontrolcode(u);
|
||
/*
|
||
* control codes are not shown ever
|
||
*/
|
||
return;
|
||
} else if (term.esc & ESC_START) {
|
||
if (term.esc & ESC_CSI) {
|
||
csiescseq.buf[csiescseq.len++] = u;
|
||
if (BETWEEN(u, 0x40, 0x7E)
|
||
|| csiescseq.len >= \
|
||
sizeof(csiescseq.buf)-1) {
|
||
term.esc = 0;
|
||
csiparse();
|
||
csihandle();
|
||
}
|
||
return;
|
||
} else if (term.esc & ESC_UTF8) {
|
||
tdefutf8(u);
|
||
} else if (term.esc & ESC_ALTCHARSET) {
|
||
tdeftran(u);
|
||
} else if (term.esc & ESC_TEST) {
|
||
tdectest(u);
|
||
} else {
|
||
if (!eschandle(u))
|
||
return;
|
||
/* sequence already finished */
|
||
}
|
||
term.esc = 0;
|
||
/*
|
||
* All characters which form part of a sequence are not
|
||
* printed
|
||
*/
|
||
return;
|
||
}
|
||
if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
|
||
selclear();
|
||
|
||
gp = &term.line[term.c.y][term.c.x];
|
||
if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
|
||
gp->mode |= ATTR_WRAP;
|
||
tnewline(1);
|
||
gp = &term.line[term.c.y][term.c.x];
|
||
}
|
||
|
||
if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
|
||
memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
|
||
|
||
if (term.c.x+width > term.col) {
|
||
tnewline(1);
|
||
gp = &term.line[term.c.y][term.c.x];
|
||
}
|
||
|
||
tsetchar(u, &term.c.attr, term.c.x, term.c.y);
|
||
|
||
if (width == 2) {
|
||
gp->mode |= ATTR_WIDE;
|
||
if (term.c.x+1 < term.col) {
|
||
gp[1].u = '\0';
|
||
gp[1].mode = ATTR_WDUMMY;
|
||
}
|
||
}
|
||
if (term.c.x+width < term.col) {
|
||
tmoveto(term.c.x+width, term.c.y);
|
||
} else {
|
||
term.c.state |= CURSOR_WRAPNEXT;
|
||
}
|
||
}
|
||
|
||
int
|
||
twrite(const char *buf, int buflen, int show_ctrl)
|
||
{
|
||
int charsize;
|
||
Rune u;
|
||
int n;
|
||
|
||
for (n = 0; n < buflen; n += charsize) {
|
||
if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
|
||
/* process a complete utf8 char */
|
||
charsize = utf8decode(buf + n, &u, buflen - n);
|
||
if (charsize == 0)
|
||
break;
|
||
} else {
|
||
u = buf[n] & 0xFF;
|
||
charsize = 1;
|
||
}
|
||
if (show_ctrl && ISCONTROL(u)) {
|
||
if (u & 0x80) {
|
||
u &= 0x7f;
|
||
tputc('^');
|
||
tputc('[');
|
||
} else if (u != '\n' && u != '\r' && u != '\t') {
|
||
u ^= 0x40;
|
||
tputc('^');
|
||
}
|
||
}
|
||
tputc(u);
|
||
}
|
||
return n;
|
||
}
|
||
|
||
void
|
||
tresize(int col, int row)
|
||
{
|
||
int i;
|
||
int minrow = MIN(row, term.row);
|
||
int mincol = MIN(col, term.col);
|
||
int *bp;
|
||
TCursor c;
|
||
|
||
if (col < 1 || row < 1) {
|
||
fprintf(stderr,
|
||
"tresize: error resizing to %dx%d\n", col, row);
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* slide screen to keep cursor where we expect it -
|
||
* tscrollup would work here, but we can optimize to
|
||
* memmove because we're freeing the earlier lines
|
||
*/
|
||
for (i = 0; i <= term.c.y - row; i++) {
|
||
free(term.line[i]);
|
||
free(term.alt[i]);
|
||
}
|
||
/* ensure that both src and dst are not NULL */
|
||
if (i > 0) {
|
||
memmove(term.line, term.line + i, row * sizeof(Line));
|
||
memmove(term.alt, term.alt + i, row * sizeof(Line));
|
||
}
|
||
for (i += row; i < term.row; i++) {
|
||
free(term.line[i]);
|
||
free(term.alt[i]);
|
||
}
|
||
|
||
/* resize to new height */
|
||
term.line = xrealloc(term.line, row * sizeof(Line));
|
||
term.alt = xrealloc(term.alt, row * sizeof(Line));
|
||
term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
|
||
term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
|
||
|
||
/* resize each row to new width, zero-pad if needed */
|
||
for (i = 0; i < minrow; i++) {
|
||
term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
|
||
term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
|
||
}
|
||
|
||
/* allocate any new rows */
|
||
for (/* i = minrow */; i < row; i++) {
|
||
term.line[i] = xmalloc(col * sizeof(Glyph));
|
||
term.alt[i] = xmalloc(col * sizeof(Glyph));
|
||
}
|
||
if (col > term.col) {
|
||
bp = term.tabs + term.col;
|
||
|
||
memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
|
||
while (--bp > term.tabs && !*bp)
|
||
/* nothing */ ;
|
||
for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
|
||
*bp = 1;
|
||
}
|
||
/* update terminal size */
|
||
term.col = col;
|
||
term.row = row;
|
||
/* reset scrolling region */
|
||
tsetscroll(0, row-1);
|
||
/* make use of the LIMIT in tmoveto */
|
||
tmoveto(term.c.x, term.c.y);
|
||
/* Clearing both screens (it makes dirty all lines) */
|
||
c = term.c;
|
||
for (i = 0; i < 2; i++) {
|
||
if (mincol < col && 0 < minrow) {
|
||
tclearregion(mincol, 0, col - 1, minrow - 1);
|
||
}
|
||
if (0 < col && minrow < row) {
|
||
tclearregion(0, minrow, col - 1, row - 1);
|
||
}
|
||
tswapscreen();
|
||
tcursor(CURSOR_LOAD);
|
||
}
|
||
term.c = c;
|
||
}
|
||
|
||
void
|
||
resettitle(void)
|
||
{
|
||
xsettitle(NULL);
|
||
}
|
||
|
||
void
|
||
redraw(void)
|
||
{
|
||
tfulldirt();
|
||
draw();
|
||
}
|