st/st.c

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/* See LICENSE for license details. */
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <termios.h>
#include <unistd.h>
#include <wchar.h>
#include "st.h"
#include "win.h"
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#if VIM_BROWSE_PATCH
#include <assert.h>
#endif // VIM_BROWSE_PATCH
#if KEYBOARDSELECT_PATCH
#include <X11/keysym.h>
#include <X11/X.h>
#endif // KEYBOARDSELECT_PATCH
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#if SIXEL_PATCH
#include "sixel.h"
#endif // SIXEL_PATCH
#if defined(__linux)
#include <pty.h>
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
#include <util.h>
#elif defined(__FreeBSD__) || defined(__DragonFly__)
#include <libutil.h>
#endif
/* Arbitrary sizes */
#define UTF_INVALID 0xFFFD
#define UTF_SIZ 4
#define ESC_BUF_SIZ (128*UTF_SIZ)
#define ESC_ARG_SIZ 16
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#if UNDERCURL_PATCH
#define CAR_PER_ARG 4
#endif // UNDERCURL_PATCH
#define STR_BUF_SIZ ESC_BUF_SIZ
#define STR_ARG_SIZ ESC_ARG_SIZ
/* macros */
#define IS_SET(flag) ((term.mode & (flag)) != 0)
#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u) (u && wcschr(worddelimiters, u))
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#if VIM_BROWSE_PATCH
static inline int max(int a, int b) { return a > b ? a : b; }
static inline int min(int a, int b) { return a < b ? a : b; }
#endif // VIM_BROWSE_PATCH
enum term_mode {
MODE_WRAP = 1 << 0,
MODE_INSERT = 1 << 1,
MODE_ALTSCREEN = 1 << 2,
MODE_CRLF = 1 << 3,
MODE_ECHO = 1 << 4,
MODE_PRINT = 1 << 5,
MODE_UTF8 = 1 << 6,
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#if SIXEL_PATCH
MODE_SIXEL = 1 << 7,
#endif // SIXEL_PATCH
};
enum cursor_movement {
CURSOR_SAVE,
CURSOR_LOAD
};
enum cursor_state {
CURSOR_DEFAULT = 0,
CURSOR_WRAPNEXT = 1,
CURSOR_ORIGIN = 2
};
enum charset {
CS_GRAPHIC0,
CS_GRAPHIC1,
CS_UK,
CS_USA,
CS_MULTI,
CS_GER,
CS_FIN
};
enum escape_state {
ESC_START = 1,
ESC_CSI = 2,
ESC_STR = 4, /* DCS, OSC, PM, APC */
ESC_ALTCHARSET = 8,
ESC_STR_END = 16, /* a final string was encountered */
ESC_TEST = 32, /* Enter in test mode */
ESC_UTF8 = 64,
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#if SIXEL_PATCH
ESC_DCS =128,
#endif // SIXEL_PATCH
};
typedef struct {
int mode;
int type;
int snap;
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#if VIM_BROWSE_PATCH
int swap;
#endif // VIM_BROWSE_PATCH
/*
* Selection variables:
* nb normalized coordinates of the beginning of the selection
* ne normalized coordinates of the end of the selection
* ob original coordinates of the beginning of the selection
* oe original coordinates of the end of the selection
*/
struct {
int x, y;
} nb, ne, ob, oe;
int alt;
} Selection;
/* CSI Escape sequence structs */
/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
typedef struct {
char buf[ESC_BUF_SIZ]; /* raw string */
size_t len; /* raw string length */
char priv;
int arg[ESC_ARG_SIZ];
int narg; /* nb of args */
char mode[2];
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#if UNDERCURL_PATCH
int carg[ESC_ARG_SIZ][CAR_PER_ARG]; /* colon args */
#endif // UNDERCURL_PATCH
} CSIEscape;
/* STR Escape sequence structs */
/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
typedef struct {
char type; /* ESC type ... */
char *buf; /* allocated raw string */
size_t siz; /* allocation size */
size_t len; /* raw string length */
char *args[STR_ARG_SIZ];
int narg; /* nb of args */
} STREscape;
static void execsh(char *, char **);
static void stty(char **);
static void sigchld(int);
static void ttywriteraw(const char *, size_t);
static void csidump(void);
static void csihandle(void);
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#if UNDERCURL_PATCH
static void readcolonargs(char **, int, int[][CAR_PER_ARG]);
#endif // UNDERCURL_PATCH
static void csiparse(void);
static void csireset(void);
static void osc4_color_response(int num);
static void osc_color_response(int index, int num);
static int eschandle(uchar);
static void strdump(void);
static void strhandle(void);
static void strparse(void);
static void strreset(void);
static void tprinter(char *, size_t);
static void tdumpsel(void);
static void tdumpline(int);
static void tdump(void);
static void tclearregion(int, int, int, int);
static void tcursor(int);
static void tdeletechar(int);
static void tdeleteline(int);
static void tinsertblank(int);
static void tinsertblankline(int);
static int tlinelen(int);
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#if !VIM_BROWSE_PATCH
static void tmoveto(int, int);
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#endif // VIM_BROWSE_PATCH
static void tmoveato(int, int);
static void tnewline(int);
static void tputtab(int);
static void tputc(Rune);
static void treset(void);
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#if SCROLLBACK_PATCH
static void tscrollup(int, int, int);
#else
static void tscrollup(int, int);
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#endif // SCROLLBACK_PATCH
static void tscrolldown(int, int);
static void tsetattr(const int *, int);
static void tsetchar(Rune, const Glyph *, int, int);
static void tsetdirt(int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void tsetmode(int, int, const int *, int);
static int twrite(const char *, int, int);
static void tcontrolcode(uchar );
static void tdectest(char );
static void tdefutf8(char);
static int32_t tdefcolor(const int *, int *, int);
static void tdeftran(char);
static void tstrsequence(uchar);
static void selnormalize(void);
static void selscroll(int, int);
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#if !VIM_BROWSE_PATCH
static void selsnap(int *, int *, int);
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#endif // VIM_BROWSE_PATCH
static size_t utf8decode(const char *, Rune *, size_t);
static Rune utf8decodebyte(char, size_t *);
static char utf8encodebyte(Rune, size_t);
static size_t utf8validate(Rune *, size_t);
static char *base64dec(const char *);
static char base64dec_getc(const char **);
static ssize_t xwrite(int, const char *, size_t);
/* Globals */
static Selection sel;
static CSIEscape csiescseq;
static STREscape strescseq;
static int iofd = 1;
static int cmdfd;
#if EXTERNALPIPEIN_PATCH && EXTERNALPIPE_PATCH
static int csdfd;
#endif // EXTERNALPIPEIN_PATCH
static pid_t pid;
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#if SIXEL_PATCH
sixel_state_t sixel_st;
#endif // SIXEL_PATCH
static const uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static const Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
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#if VIM_BROWSE_PATCH
int buffCols;
extern int const buffSize;
int histOp, histMode, histOff, insertOff, altToggle, *mark;
Line *buf = NULL;
static TCursor c[3];
static inline int rows() { return IS_SET(MODE_ALTSCREEN) ? term.row : buffSize;}
static inline int rangeY(int i) { while (i < 0) i += rows(); return i % rows();}
#endif // VIM_BROWSE_PATCH
#include "patch/st_include.h"
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ssize_t
xwrite(int fd, const char *s, size_t len)
{
size_t aux = len;
ssize_t r;
while (len > 0) {
r = write(fd, s, len);
if (r < 0)
return r;
len -= r;
s += r;
}
return aux;
}
void *
xmalloc(size_t len)
{
void *p;
if (!(p = malloc(len)))
die("malloc: %s\n", strerror(errno));
return p;
}
void *
xrealloc(void *p, size_t len)
{
if ((p = realloc(p, len)) == NULL)
die("realloc: %s\n", strerror(errno));
return p;
}
char *
xstrdup(const char *s)
{
char *p;
if ((p = strdup(s)) == NULL)
die("strdup: %s\n", strerror(errno));
return p;
}
size_t
utf8decode(const char *c, Rune *u, size_t clen)
{
size_t i, j, len, type;
Rune udecoded;
*u = UTF_INVALID;
if (!clen)
return 0;
udecoded = utf8decodebyte(c[0], &len);
if (!BETWEEN(len, 1, UTF_SIZ))
return 1;
for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
if (type != 0)
return j;
}
if (j < len)
return 0;
*u = udecoded;
utf8validate(u, len);
return len;
}
Rune
utf8decodebyte(char c, size_t *i)
{
for (*i = 0; *i < LEN(utfmask); ++(*i))
if (((uchar)c & utfmask[*i]) == utfbyte[*i])
return (uchar)c & ~utfmask[*i];
return 0;
}
size_t
utf8encode(Rune u, char *c)
{
size_t len, i;
len = utf8validate(&u, 0);
if (len > UTF_SIZ)
return 0;
for (i = len - 1; i != 0; --i) {
c[i] = utf8encodebyte(u, 0);
u >>= 6;
}
c[0] = utf8encodebyte(u, len);
return len;
}
char
utf8encodebyte(Rune u, size_t i)
{
return utfbyte[i] | (u & ~utfmask[i]);
}
size_t
utf8validate(Rune *u, size_t i)
{
if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
*u = UTF_INVALID;
for (i = 1; *u > utfmax[i]; ++i)
;
return i;
}
char
base64dec_getc(const char **src)
{
while (**src && !isprint((unsigned char)**src))
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(*src)++;
return **src ? *((*src)++) : '='; /* emulate padding if string ends */
}
char *
base64dec(const char *src)
{
size_t in_len = strlen(src);
char *result, *dst;
static const char base64_digits[256] = {
[43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
0, 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0,
0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
};
if (in_len % 4)
in_len += 4 - (in_len % 4);
result = dst = xmalloc(in_len / 4 * 3 + 1);
while (*src) {
int a = base64_digits[(unsigned char) base64dec_getc(&src)];
int b = base64_digits[(unsigned char) base64dec_getc(&src)];
int c = base64_digits[(unsigned char) base64dec_getc(&src)];
int d = base64_digits[(unsigned char) base64dec_getc(&src)];
/* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */
if (a == -1 || b == -1)
break;
*dst++ = (a << 2) | ((b & 0x30) >> 4);
if (c == -1)
break;
*dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
if (d == -1)
break;
*dst++ = ((c & 0x03) << 6) | d;
}
*dst = '\0';
return result;
}
void
selinit(void)
{
sel.mode = SEL_IDLE;
sel.snap = 0;
sel.ob.x = -1;
}
int
tlinelen(int y)
{
int i = term.col;
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#if SCROLLBACK_PATCH
if (TLINE(y)[i - 1].mode & ATTR_WRAP)
return i;
while (i > 0 && TLINE(y)[i - 1].u == ' ')
--i;
#else
if (term.line[y][i - 1].mode & ATTR_WRAP)
return i;
while (i > 0 && term.line[y][i - 1].u == ' ')
--i;
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#endif // SCROLLBACK_PATCH
return i;
}
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#if VIM_BROWSE_PATCH
void historyOpToggle(int start, int paint) {
if ((!histOp == !(histOp + start)) && ((histOp += start) || 1)) return;
if (histMode && paint && (!IS_SET(MODE_ALTSCREEN) || altToggle)) draw();
tcursor(CURSOR_SAVE);
histOp += start;
if (histMode && altToggle) {
tswapscreen();
memset(term.dirty,0,sizeof(*term.dirty)*term.row);
}
tcursor(CURSOR_LOAD);
*(!IS_SET(MODE_ALTSCREEN)?&term.line:&term.alt)=&buf[histOp?histOff:insertOff];
}
void historyModeToggle(int start) {
if (!(histMode = (histOp = !!start))) {
selnormalize();
tfulldirt();
} else {
tcursor(CURSOR_SAVE);
histOp = 0;
histOff = insertOff;
}
}
int historyBufferScroll(int n) {
if (IS_SET(MODE_ALTSCREEN) || !n) return histOp;
int p=abs(n=(n<0) ? max(n,-term.row) : min(n,term.row)), r=term.row-p,
s=sizeof(*term.dirty), *ptr=histOp?&histOff:&insertOff;
if (!histMode || histOp) tfulldirt(); else {
memmove(&term.dirty[-min(n,0)], &term.dirty[max(n,0)], s*r);
memset(&term.dirty[n>0 ? r : 0], 0, s * p);
}
term.line = &buf[*ptr = (buffSize+*ptr+n) % buffSize];
// Cut part of selection removed from buffer, and update sel.ne/b.
int const prevOffBuf = sel.alt ? 0 : insertOff + term.row;
if (sel.ob.x != -1 && !histOp && n) {
int const offBuf = sel.alt ? 0 : insertOff + term.row,
pb = rangeY(sel.ob.y - prevOffBuf),
pe = rangeY(sel.oe.y - prevOffBuf);
int const b = rangeY(sel.ob.y - offBuf), nln = n < 0,
e = rangeY(sel.oe.y - offBuf), last = offBuf - nln;
if (pb != b && ((pb < b) != nln)) sel.ob.y = last;
if (pe != e && ((pe < e) != nln)) sel.oe.y = last;
if (sel.oe.y == last && sel.ob.y == last) selclear();
}
selnormalize();
// Clear the new region exposed by the shift.
if (!histOp) tclearregion(0, n>0?r+1:0, buffCols-1, n>0?term.row:p-1);
return 1;
}
int historyMove(int x, int y, int ly) {
historyOpToggle(1, 1);
y += ((term.c.x += x) < 0 ?term.c.x-term.col :term.c.x) / term.col;//< x
if ((term.c.x %= term.col) < 0) term.c.x += term.col;
if ((term.c.y += y) >= term.row) ly += term.c.y - term.row + 1; //< y
else if (term.c.y < 0) ly += term.c.y;
term.c.y = MIN(MAX(term.c.y, 0), term.row - 1);
// Check if scroll is necessary / arrived at top / bottom of terminal history
int t = 0, b = 0, finTop = ly < 0, finBot = ly > 0;
if (!IS_SET(MODE_ALTSCREEN)) {
b=rangeY(insertOff-histOff), t=-rangeY(-term.row-(insertOff-histOff));
finBot = ly > b, finTop=histMode&&((-ly>-t));
}
if ((finTop || finBot) && (x||y)) term.c.x = finBot ? term.col-1 : 0;
historyBufferScroll(finBot ? b : (finTop ? t : ly));
historyOpToggle(-1, 1);
return finTop || finBot;
}
void selnormalize(void) {
historyOpToggle(1, 1);
int const oldb = sel.nb.y, olde = sel.ne.y;
if (sel.ob.x == -1) {
sel.ne.y = sel.nb.y = -1;
} else {
int const offsetBuffer = sel.alt ? 0 : insertOff + term.row;
int const off = sel.alt ? 0 : (histMode ? histOff : insertOff);
int const nby = rangeY(sel.ob.y - off),
ney = rangeY(sel.oe.y - off);
sel.swap = rangeY(sel.ob.y - offsetBuffer)
> rangeY(sel.oe.y - offsetBuffer);
sel.nb.y = sel.swap ? ney : nby;
sel.ne.y = !sel.swap ? ney : nby;
int const cnb = sel.nb.y < term.row, cne = sel.ne.y < term.row;
if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
if (cnb) sel.nb.x = (!sel.swap) ? sel.ob.x : sel.oe.x;
if (cne) sel.ne.x = (!sel.swap) ? sel.oe.x : sel.ob.x;
} else {
if (cnb) sel.nb.x = MIN(sel.ob.x, sel.oe.x);
if (cne) sel.ne.x = MAX(sel.ob.x, sel.oe.x);
}
}
int const nBet=sel.nb.y<=sel.ne.y, oBet=oldb<=olde;
for (int i = 0; i < term.row; ++i) {
int const n = nBet ? BETWEEN(i, sel.nb.y, sel.ne.y)
: OUT(i, sel.nb.y, sel.ne.y);
term.dirty[i] |= (sel.type == SEL_RECTANGULAR && n) ||
(n != (oBet ? BETWEEN(i,oldb,olde) : OUT(i,oldb,olde)));
}
if (BETWEEN(oldb, 0, term.row - 1)) term.dirty[oldb] = 1;
if (BETWEEN(olde, 0, term.row - 1)) term.dirty[olde] = 1;
if (BETWEEN(sel.nb.y, 0, term.row - 1)) term.dirty[sel.nb.y] = 1;
if (BETWEEN(sel.ne.y, 0, term.row - 1)) term.dirty[sel.ne.y] = 1;
historyOpToggle(-1, 1);
}
#endif // VIM_BROWSE_PATCH
void
selstart(int col, int row, int snap)
{
selclear();
sel.mode = SEL_EMPTY;
sel.type = SEL_REGULAR;
sel.alt = IS_SET(MODE_ALTSCREEN);
sel.snap = snap;
sel.oe.x = sel.ob.x = col;
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#if VIM_BROWSE_PATCH
sel.oe.y = sel.ob.y = row + !sel.alt * (histMode ? histOff : insertOff);
if (sel.snap != 0) sel.mode = SEL_READY;
#else
sel.oe.y = sel.ob.y = row;
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#endif // VIM_BROWSE_PATCH
selnormalize();
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#if !VIM_BROWSE_PATCH
if (sel.snap != 0)
sel.mode = SEL_READY;
tsetdirt(sel.nb.y, sel.ne.y);
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#endif // VIM_BROWSE_PATCH
}
void
selextend(int col, int row, int type, int done)
{
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#if !VIM_BROWSE_PATCH
int oldey, oldex, oldsby, oldsey, oldtype;
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#endif // VIM_BROWSE_PATCH
if (sel.mode == SEL_IDLE)
return;
if (done && sel.mode == SEL_EMPTY) {
selclear();
return;
}
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#if !VIM_BROWSE_PATCH
oldey = sel.oe.y;
oldex = sel.oe.x;
oldsby = sel.nb.y;
oldsey = sel.ne.y;
oldtype = sel.type;
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#endif // VIM_BROWSE_PATCH
sel.oe.x = col;
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#if VIM_BROWSE_PATCH
sel.oe.y = row + (sel.alt ? 0 : (histMode ? histOff : insertOff));
#else
sel.oe.y = row;
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#endif // VIM_BROWSE_PATCH
selnormalize();
sel.type = type;
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#if !VIM_BROWSE_PATCH
if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
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#endif // VIM_BROWSE_PATCH
sel.mode = done ? SEL_IDLE : SEL_READY;
}
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#if !VIM_BROWSE_PATCH
void
selnormalize(void)
{
int i;
if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
} else {
sel.nb.x = MIN(sel.ob.x, sel.oe.x);
sel.ne.x = MAX(sel.ob.x, sel.oe.x);
}
sel.nb.y = MIN(sel.ob.y, sel.oe.y);
sel.ne.y = MAX(sel.ob.y, sel.oe.y);
selsnap(&sel.nb.x, &sel.nb.y, -1);
selsnap(&sel.ne.x, &sel.ne.y, +1);
/* expand selection over line breaks */
if (sel.type == SEL_RECTANGULAR)
return;
i = tlinelen(sel.nb.y);
if (i < sel.nb.x)
sel.nb.x = i;
if (tlinelen(sel.ne.y) <= sel.ne.x)
sel.ne.x = term.col - 1;
}
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#endif // VIM_BROWSE_PATCH
int
selected(int x, int y)
{
if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
sel.alt != IS_SET(MODE_ALTSCREEN))
return 0;
if (sel.type == SEL_RECTANGULAR)
return BETWEEN(y, sel.nb.y, sel.ne.y)
&& BETWEEN(x, sel.nb.x, sel.ne.x);
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#if VIM_BROWSE_PATCH
return ((sel.nb.y > sel.ne.y) ? OUT(y, sel.nb.y, sel.ne.y)
: BETWEEN(y, sel.nb.y, sel.ne.y)) &&
(y != sel.nb.y || x >= sel.nb.x) &&
(y != sel.ne.y || x <= sel.ne.x);
#else
return BETWEEN(y, sel.nb.y, sel.ne.y)
&& (y != sel.nb.y || x >= sel.nb.x)
&& (y != sel.ne.y || x <= sel.ne.x);
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#endif // VIM_BROWSE_PATCH
}
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#if !VIM_BROWSE_PATCH
void
selsnap(int *x, int *y, int direction)
{
int newx, newy, xt, yt;
int delim, prevdelim;
const Glyph *gp, *prevgp;
switch (sel.snap) {
case SNAP_WORD:
/*
* Snap around if the word wraps around at the end or
* beginning of a line.
*/
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#if SCROLLBACK_PATCH
prevgp = &TLINE(*y)[*x];
#else
prevgp = &term.line[*y][*x];
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#endif // SCROLLBACK_PATCH
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;
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#if SCROLLBACK_PATCH
if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
#else
if (!(term.line[yt][xt].mode & ATTR_WRAP))
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#endif // SCROLLBACK_PATCH
break;
}
if (newx >= tlinelen(newy))
break;
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#if SCROLLBACK_PATCH
gp = &TLINE(newy)[newx];
#else
gp = &term.line[newy][newx];
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#endif // SCROLLBACK_PATCH
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) {
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#if SCROLLBACK_PATCH
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if (!(TLINE(*y-1)[term.col-1].mode & ATTR_WRAP))
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#else
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if (!(term.line[*y-1][term.col-1].mode & ATTR_WRAP))
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#endif // SCROLLBACK_PATCH
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{
break;
}
}
} else if (direction > 0) {
for (; *y < term.row-1; *y += direction) {
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#if SCROLLBACK_PATCH
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if (!(TLINE(*y)[term.col-1].mode & ATTR_WRAP))
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#else
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if (!(term.line[*y][term.col-1].mode & ATTR_WRAP))
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#endif // SCROLLBACK_PATCH
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{
break;
}
}
}
break;
}
}
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#endif // VIM_BROWSE_PATCH
char *
getsel(void)
{
char *str, *ptr;
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#if VIM_BROWSE_PATCH
int y, yy, bufsize, lastx;
#else
int y, bufsize, lastx, linelen;
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#endif // VIM_BROWSE_PATCH
const Glyph *gp, *last;
if (sel.ob.x == -1)
return NULL;
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#if VIM_BROWSE_PATCH
int const start = sel.swap ? sel.oe.y : sel.ob.y, h = rows();
int endy = (sel.swap ? sel.ob.y : sel.oe.y);
for (; endy < start; endy += h);
Line * const cbuf = IS_SET(MODE_ALTSCREEN) ? term.line : buf;
bufsize = (term.col+1) * (endy-start+1 ) * UTF_SIZ;
assert(bufsize > 0);
#else
bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
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#endif // VIM_BROWSE_PATCH
ptr = str = xmalloc(bufsize);
/* append every set & selected glyph to the selection */
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#if VIM_BROWSE_PATCH
for (y = start; y <= endy; y++)
#else
for (y = sel.nb.y; y <= sel.ne.y; y++)
#endif // VIM_BROWSE_PATCH
{
#if VIM_BROWSE_PATCH
yy = y % h;
#else
if ((linelen = tlinelen(y)) == 0) {
*ptr++ = '\n';
continue;
}
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#endif // VIM_BROWSE_PATCH
if (sel.type == SEL_RECTANGULAR) {
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#if VIM_BROWSE_PATCH
gp = &cbuf[yy][sel.nb.x];
#elif SCROLLBACK_PATCH
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gp = &TLINE(y)[sel.nb.x];
#else
gp = &term.line[y][sel.nb.x];
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#endif // SCROLLBACK_PATCH
lastx = sel.ne.x;
} else {
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#if VIM_BROWSE_PATCH
gp = &cbuf[yy][start == y ? sel.nb.x : 0];
#elif SCROLLBACK_PATCH
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gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
#else
gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
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#endif // SCROLLBACK_PATCH
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#if VIM_BROWSE_PATCH
lastx = (endy == y) ? sel.ne.x : term.col-1;
#else
lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
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#endif // VIM_BROWSE_PATCH
}
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#if VIM_BROWSE_PATCH
last = &cbuf[yy][lastx];
#elif SCROLLBACK_PATCH
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last = &TLINE(y)[MIN(lastx, linelen-1)];
#else
last = &term.line[y][MIN(lastx, linelen-1)];
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#endif // SCROLLBACK_PATCH
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#if VIM_BROWSE_PATCH
if (!(cbuf[yy][term.col - 1].mode & ATTR_WRAP))
while (last > gp && last->u == ' ') --last;
#else
while (last >= gp && last->u == ' ')
--last;
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#endif // VIM_BROWSE_PATCH
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.
*/
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if (
#if VIM_BROWSE_PATCH
(y < endy || lastx == term.col - 1)
#else
(y < sel.ne.y || lastx >= linelen)
#endif //
&& (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
*ptr++ = '\n';
}
*ptr = 0;
return str;
}
void
selclear(void)
{
if (sel.ob.x == -1)
return;
sel.mode = SEL_IDLE;
sel.ob.x = -1;
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#if VIM_BROWSE_PATCH
selnormalize();
#else
tsetdirt(sel.nb.y, sel.ne.y);
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#endif // VIM_BROWSE_PATCH
}
void
die(const char *errstr, ...)
{
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
exit(1);
}
void
execsh(char *cmd, char **args)
{
char *sh, *prog, *arg;
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 : cmd;
if (args) {
prog = args[0];
arg = NULL;
} else if (scroll) {
prog = scroll;
arg = utmp ? utmp : sh;
} else if (utmp) {
prog = utmp;
arg = NULL;
} else {
prog = sh;
arg = NULL;
}
DEFAULT(args, ((char *[]) {prog, arg, 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);
setenv("COLORTERM", "truecolor", 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 EXTERNALPIPEIN_PATCH && EXTERNALPIPE_PATCH
if ((p = waitpid((extpipeactive ? -1 : pid), &stat, WNOHANG)) < 0)
#else
if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
#endif // EXTERNALPIPEIN_PATCH
die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
#if EXTERNALPIPE_PATCH
if (pid != p) {
if (!extpipeactive)
return;
if (p == 0 && wait(&stat) < 0)
die("wait: %s\n", strerror(errno));
/* reinstall sigchld handler */
signal(SIGCHLD, sigchld);
extpipeactive = 0;
return;
}
#else
if (pid != p)
return;
#endif // EXTERNALPIPE_PATCH
#if EXTERNALPIPEIN_PATCH && EXTERNALPIPE_PATCH
close(csdfd);
#endif // EXTERNALPIPEIN_PATCH
if (WIFEXITED(stat) && WEXITSTATUS(stat))
die("child exited with status %d\n", WEXITSTATUS(stat));
else if (WIFSIGNALED(stat))
die("child terminated due to signal %d\n", WTERMSIG(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");
}
int
ttynew(const char *line, char *cmd, const char *out, char **args)
{
int m, s;
#if EXTERNALPIPEIN_PATCH && EXTERNALPIPE_PATCH
struct sigaction sa;
#endif // EXTERNALPIPEIN_PATCH
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 '%s' failed: %s\n",
line, strerror(errno));
dup2(cmdfd, 0);
stty(args);
return cmdfd;
}
/* 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: %s\n", strerror(errno));
break;
case 0:
close(iofd);
close(m);
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));
if (s > 2)
close(s);
#ifdef __OpenBSD__
if (pledge("stdio getpw proc exec", NULL) == -1)
die("pledge\n");
#endif
execsh(cmd, args);
break;
default:
#ifdef __OpenBSD__
#if RIGHTCLICKTOPLUMB_PATCH || OPENCOPIED_PATCH
if (pledge("stdio rpath tty proc ps exec", NULL) == -1)
#else
if (pledge("stdio rpath tty proc", NULL) == -1)
#endif // RIGHTCLICKTOPLUMB_PATCH
die("pledge\n");
#endif
#if EXTERNALPIPEIN_PATCH && EXTERNALPIPE_PATCH
csdfd = s;
cmdfd = m;
memset(&sa, 0, sizeof(sa));
sigemptyset(&sa.sa_mask);
sa.sa_handler = sigchld;
sigaction(SIGCHLD, &sa, NULL);
#else
close(s);
cmdfd = m;
signal(SIGCHLD, sigchld);
#endif // EXTERNALPIPEIN_PATCH
break;
}
return cmdfd;
}
size_t
ttyread(void)
{
static char buf[BUFSIZ];
static int buflen = 0;
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int ret, written;
/* append read bytes to unprocessed bytes */
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#if SYNC_PATCH
ret = twrite_aborted ? 1 : read(cmdfd, buf+buflen, LEN(buf)-buflen);
#else
ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
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#endif // SYNC_PATCH
switch (ret) {
case 0:
exit(0);
case -1:
die("couldn't read from shell: %s\n", strerror(errno));
default:
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#if SYNC_PATCH
buflen += twrite_aborted ? 0 : ret;
#else
buflen += ret;
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#endif // SYNC_PATCH
written = twrite(buf, buflen, 0);
buflen -= written;
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/* keep any incomplete UTF-8 byte sequence 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;
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#if SCROLLBACK_PATCH
Arg arg = (Arg) { .i = term.scr };
kscrolldown(&arg);
#endif // SCROLLBACK_PATCH
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));
}
void
ttyhangup(void)
{
/* Send SIGHUP to shell */
kill(pid, SIGHUP);
}
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;
}
int
tisaltscr(void)
{
return IS_SET(MODE_ALTSCREEN);
}
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)
{
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#if SYNC_PATCH
tsync_end();
#endif // SYNC_PATCH
tsetdirt(0, term.row-1);
}
void
tcursor(int mode)
{
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#if VIM_BROWSE_PATCH
int alt = (histOp) ? 0 : (IS_SET(MODE_ALTSCREEN) + 1);
#else
static TCursor c[2];
int alt = IS_SET(MODE_ALTSCREEN);
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#endif // VIM_BROWSE_PATCH
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;
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#if SIXEL_PATCH
ImageList *im;
#endif // SIXEL_PATCH
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);
#if COLUMNS_PATCH && !VIM_BROWSE_PATCH
tclearregion(0, 0, term.maxcol-1, term.row-1);
#else
tclearregion(0, 0, term.col-1, term.row-1);
#endif // COLUMNS_PATCH
tswapscreen();
}
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#if SIXEL_PATCH
for (im = term.images; im; im = im->next)
im->should_delete = 1;
#endif // SIXEL_PATCH
}
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;
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#if SIXEL_PATCH
ImageList *im = term.images;
#endif // SIXEL_PATCH
term.line = term.alt;
term.alt = tmp;
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#if SIXEL_PATCH
term.images = term.images_alt;
term.images_alt = im;
#endif // SIXEL_PATCH
term.mode ^= MODE_ALTSCREEN;
tfulldirt();
}
void
tscrolldown(int orig, int n)
{
#if OPENURLONCLICK_PATCH
restoremousecursor();
#endif //OPENURLONCLICK_PATCH
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#if VIM_BROWSE_PATCH
if (!orig && historyBufferScroll(-n))
return;
#endif // VIM_BROWSE_PATCH
int i;
Line temp;
LIMIT(n, 0, term.bot-orig+1);
tsetdirt(orig, term.bot-n);
#if COLUMNS_PATCH && !VIM_BROWSE_PATCH
tclearregion(0, term.bot-n+1, term.maxcol-1, term.bot);
#else
tclearregion(0, term.bot-n+1, term.col-1, term.bot);
#endif // COLUMNS_PATCH
for (i = term.bot; i >= orig+n; i--) {
temp = term.line[i];
term.line[i] = term.line[i-n];
term.line[i-n] = temp;
}
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#if SIXEL_PATCH
/* move images, if they are inside the scrolling region */
ImageList *im;
for (im = term.images; im; im = im->next) {
if (im->y * win.ch + im->height > orig * win.ch && im->y <= term.bot) {
im->y += n;
im->should_delete |= (im->y >= term.row);
}
}
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#endif // SIXEL_PATCH
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#if SCROLLBACK_PATCH
if (term.scr == 0)
selscroll(orig, n);
#else
selscroll(orig, n);
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#endif // SCROLLBACK_PATCH
}
void
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#if SCROLLBACK_PATCH
tscrollup(int orig, int n, int copyhist)
#else
tscrollup(int orig, int n)
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#endif // SCROLLBACK_PATCH
{
#if OPENURLONCLICK_PATCH
restoremousecursor();
#endif //OPENURLONCLICK_PATCH
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#if VIM_BROWSE_PATCH
if (!orig && historyBufferScroll(n))
return;
#endif // VIM_BROWSE_PATCH
int i;
Line temp;
LIMIT(n, 0, term.bot-orig+1);
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#if SCROLLBACK_PATCH
if (copyhist && !IS_SET(MODE_ALTSCREEN)) {
for (i = 0; i < n; i++) {
term.histi = (term.histi + 1) % HISTSIZE;
temp = term.hist[term.histi];
term.hist[term.histi] = term.line[orig+i];
term.line[orig+i] = temp;
}
term.histn = MIN(term.histn + n, HISTSIZE);
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if (term.scr > 0 && term.scr < HISTSIZE)
term.scr = MIN(term.scr + n, HISTSIZE-1);
}
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#endif // SCROLLBACK_PATCH
#if COLUMNS_PATCH && !VIM_BROWSE_PATCH
tclearregion(0, orig, term.maxcol-1, orig+n-1);
#else
tclearregion(0, orig, term.col-1, orig+n-1);
#endif // COLUMNS_PATCH
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;
}
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#if SIXEL_PATCH
#if SCROLLBACK_PATCH
if (term.scr == 0)
scroll_images(-1 * n);
#else
scroll_images(-1 * n);
#endif
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#endif // SIXEL_PATCH
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#if SCROLLBACK_PATCH
if (term.scr == 0)
selscroll(orig, -n);
#else
selscroll(orig, -n);
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#endif // SCROLLBACK_PATCH
}
void
selscroll(int orig, int n)
{
if (sel.ob.x == -1 || sel.alt != IS_SET(MODE_ALTSCREEN))
return;
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if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
selclear();
} else if (BETWEEN(sel.nb.y, orig, term.bot)) {
sel.ob.y += n;
sel.oe.y += n;
if (sel.ob.y < term.top || sel.ob.y > term.bot ||
sel.oe.y < term.top || sel.oe.y > term.bot) {
selclear();
} else {
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selnormalize();
}
}
}
void
tnewline(int first_col)
{
int y = term.c.y;
if (y == term.bot) {
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#if SCROLLBACK_PATCH
tscrollup(term.top, 1, 1);
#else
tscrollup(term.top, 1);
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#endif // SCROLLBACK_PATCH
} else {
y++;
}
tmoveto(first_col ? 0 : term.c.x, y);
}
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#if UNDERCURL_PATCH
void
readcolonargs(char **p, int cursor, int params[][CAR_PER_ARG])
{
int i = 0;
for (; i < CAR_PER_ARG; i++)
params[cursor][i] = -1;
if (**p != ':')
return;
char *np = NULL;
i = 0;
while (**p == ':' && i < CAR_PER_ARG) {
while (**p == ':')
(*p)++;
params[cursor][i] = strtol(*p, &np, 10);
*p = np;
i++;
}
}
#endif // UNDERCURL_PATCH
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;
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#if UNDERCURL_PATCH
readcolonargs(&p, csiescseq.narg-1, csiescseq.carg);
#endif // UNDERCURL_PATCH
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, const Glyph *attr, int x, int y)
{
static const 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;
#if BOXDRAW_PATCH
if (isboxdraw(u))
term.line[y][x].mode |= ATTR_BOXDRAW;
#endif // BOXDRAW_PATCH
}
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;
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#if VIM_BROWSE_PATCH
LIMIT(x1, 0, buffCols-1);
LIMIT(x2, 0, buffCols-1);
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#elif COLUMNS_PATCH
LIMIT(x1, 0, term.maxcol-1);
LIMIT(x2, 0, term.maxcol-1);
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#else
LIMIT(x1, 0, term.col-1);
LIMIT(x2, 0, term.col-1);
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#endif // VIM_BROWSE_PATCH
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))
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#if SCROLLBACK_PATCH
tscrollup(term.c.y, n, 0);
#else
tscrollup(term.c.y, n);
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#endif // SCROLLBACK_PATCH
}
int32_t
tdefcolor(const 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(const 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;
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#if UNDERCURL_PATCH
term.c.attr.ustyle = -1;
term.c.attr.ucolor[0] = -1;
term.c.attr.ucolor[1] = -1;
term.c.attr.ucolor[2] = -1;
#endif // UNDERCURL_PATCH
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:
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#if UNDERCURL_PATCH
term.c.attr.ustyle = csiescseq.carg[i][0];
if (term.c.attr.ustyle != 0)
term.c.attr.mode |= ATTR_UNDERLINE;
else
term.c.attr.mode &= ~ATTR_UNDERLINE;
term.c.attr.mode ^= ATTR_DIRTYUNDERLINE;
#else
term.c.attr.mode |= ATTR_UNDERLINE;
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#endif // UNDERCURL_PATCH
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)
#if MONOCHROME_PATCH
term.c.attr.fg = defaultfg;
#else
term.c.attr.fg = idx;
#endif // MONOCHROME_PATCH
break;
case 39:
term.c.attr.fg = defaultfg;
break;
case 48:
if ((idx = tdefcolor(attr, &i, l)) >= 0)
#if MONOCHROME_PATCH
term.c.attr.bg = 0;
#else
term.c.attr.bg = idx;
#endif // MONOCHROME_PATCH
break;
case 49:
term.c.attr.bg = defaultbg;
break;
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#if UNDERCURL_PATCH
case 58:
term.c.attr.ucolor[0] = csiescseq.carg[i][1];
term.c.attr.ucolor[1] = csiescseq.carg[i][2];
term.c.attr.ucolor[2] = csiescseq.carg[i][3];
term.c.attr.mode ^= ATTR_DIRTYUNDERLINE;
break;
case 59:
term.c.attr.ucolor[0] = -1;
term.c.attr.ucolor[1] = -1;
term.c.attr.ucolor[2] = -1;
term.c.attr.mode ^= ATTR_DIRTYUNDERLINE;
break;
#endif // UNDERCURL_PATCH
default:
if (BETWEEN(attr[i], 30, 37)) {
#if MONOCHROME_PATCH
term.c.attr.fg = defaultfg;
#else
term.c.attr.fg = attr[i] - 30;
#endif // MONOCHROME_PATCH
} else if (BETWEEN(attr[i], 40, 47)) {
#if MONOCHROME_PATCH
term.c.attr.bg = 0;
#else
term.c.attr.bg = attr[i] - 40;
#endif // MONOCHROME_PATCH
} else if (BETWEEN(attr[i], 90, 97)) {
#if MONOCHROME_PATCH
term.c.attr.fg = defaultfg;
#else
term.c.attr.fg = attr[i] - 90 + 8;
#endif // MONOCHROME_PATCH
} else if (BETWEEN(attr[i], 100, 107)) {
#if MONOCHROME_PATCH
term.c.attr.bg = 0;
#else
term.c.attr.bg = attr[i] - 100 + 8;
#endif // MONOCHROME_PATCH
} 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, const int *args, int narg)
{
int alt;
const int *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) {
#if COLUMNS_PATCH && !VIM_BROWSE_PATCH
tclearregion(0, 0, term.maxcol-1, term.row-1);
#else
tclearregion(0, 0, term.col-1, term.row-1);
#endif // COLUMNS_PATCH
}
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. */
break;
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 buffer[40];
int len;
#if SIXEL_PATCH
ImageList *im;
#endif // SIXEL_PATCH
#if COLUMNS_PATCH && !VIM_BROWSE_PATCH
int maxcol = term.maxcol;
#else
int maxcol = term.col;
#endif // COLUMNS_PATCH
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 'b': /* REP -- if last char is printable print it <n> more times */
DEFAULT(csiescseq.arg[0], 1);
if (term.lastc)
while (csiescseq.arg[0]-- > 0)
tputc(term.lastc);
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 */
switch (csiescseq.arg[0]) {
case 0: /* below */
tclearregion(term.c.x, term.c.y, maxcol-1, term.c.y);
if (term.c.y < term.row-1) {
tclearregion(0, term.c.y+1, maxcol-1,
term.row-1);
}
break;
case 1: /* above */
if (term.c.y > 1)
tclearregion(0, 0, maxcol-1, term.c.y-1);
tclearregion(0, term.c.y, term.c.x, term.c.y);
break;
case 2: /* screen */
#if SCROLLBACK_PATCH || VIM_BROWSE_PATCH
if (!IS_SET(MODE_ALTSCREEN)) {
#if SCROLLBACK_PATCH
kscrolldown(&((Arg){ .i = term.scr }));
#endif
int n, m, bot = term.bot;
term.bot = term.row-1;
for (n = term.row-1; n >= 0; n--) {
for (m = 0; m < maxcol && term.line[n][m].u == ' ' && !term.line[n][m].mode; m++);
if (m < maxcol) {
#if SCROLLBACK_PATCH
tscrollup(0, n+1, 1);
#else
tscrollup(0, n+1);
#endif
break;
}
}
if (n < term.row-1)
tclearregion(0, 0, maxcol-1, term.row-n-2);
term.bot = bot;
break;
}
#endif // SCROLLBACK_PATCH
tclearregion(0, 0, maxcol-1, term.row-1);
#if SIXEL_PATCH
for (im = term.images; im; im = im->next)
im->should_delete = 1;
#endif // SIXEL_PATCH
break;
case 3: /* scrollback */
#if VIM_BROWSE_PATCH
if (!IS_SET(MODE_ALTSCREEN)) {
Glyph g=(Glyph){.bg=term.c.attr.bg, .fg=term.c.attr.fg, .u=' ', .mode=0};
for (int i = 0; i < buffSize; ++i) {
if (!BETWEEN(i, insertOff, insertOff + term.row - 1) &&
!(insertOff + term.row > buffSize &&
BETWEEN(i, 0, (insertOff + term.row - 1) % buffSize))) {
for (int j = 0; j < term.col; ++j)
buf[i][j] = g;
}
}
}
#elif SCROLLBACK_PATCH
if (!IS_SET(MODE_ALTSCREEN)) {
term.scr = 0;
term.histi = 0;
term.histn = 0;
Glyph g=(Glyph){.bg=term.c.attr.bg, .fg=term.c.attr.fg, .u=' ', .mode=0};
for (int i = 0; i < HISTSIZE; i++) {
for (int j = 0; j < maxcol; j++)
term.hist[i][j] = g;
}
}
#endif // SCROLLBACK_PATCH
#if SIXEL_PATCH
if (!IS_SET(MODE_ALTSCREEN)) {
for (im = term.images; im; im = im->next)
im->should_delete |= (im->y * win.ch + im->height <= 0);
}
#endif // SIXEL_PATCH
break;
Fix sixel issues and add a clearing sequence (#99) This patch fixes the following sixel issues: - The current sixel implementation cleared all cells from the left side of the image when the image was drawn. The fix only clears the cells where the image will be drawn. - The deletion routine didn't work correctly. In certain situations, it left the image or images undrawn. For example, if the first image was marked for deletion, it didn't draw the second one. - The drawing routine caused a high cpu usage, because XCopyArea() triggered the X server to send the NoExpose event, which caused sixels to be redrawn and the X server to send another NoExpose event and so on. This loop caused constant redraw of sixels and high cpu usage. The fix prevents the X server from sending GraphicsExpose and NoExpose events. The patch also adds a control sequence for removing sixels: Because the sixels are implemented as overlay images, they cannot be removed by clearing the underlaying cells. Therefore, we need a control sequence to remove them. I opted to choose ESC[6J as the control sequence because it is not used and the number refers to sixels. So when the lf file manager supports sixels [1], you can use the following minimal scripts to preview images in lf: previewer: #!/bin/sh case "$(readlink -f "$1")" in *.bmp|*.gif|*.jpg|*.jpeg|*.png|*.webp|*.six|*.svg|*.xpm) chafa -s "$(($2-3))x$3" -f sixels "$1" exit 1 ;; *) bat "$1" ;; esac cleaner: #!/bin/sh printf "\033[6J" >/dev/tty [1] https://github.com/gokcehan/lf/pull/1211
2023-06-12 14:02:19 +00:00
#if SIXEL_PATCH
case 6: /* sixels */
for (im = term.images; im; im = im->next)
im->should_delete = 1;
break;
#endif // SIXEL_PATCH
default:
goto unknown;
}
break;
case 'K': /* EL -- Clear line */
switch (csiescseq.arg[0]) {
case 0: /* right */
tclearregion(term.c.x, term.c.y, maxcol-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, maxcol-1, term.c.y);
break;
}
break;
case 'S': /* SU -- Scroll <n> line up */
if (csiescseq.priv)
break;
DEFAULT(csiescseq.arg[0], 1);
#if SIXEL_PATCH && SCROLLBACK_PATCH
tscrollup(term.top, csiescseq.arg[0], 1);
#elif SCROLLBACK_PATCH
2019-09-16 13:31:58 +00:00
tscrollup(term.top, csiescseq.arg[0], 0);
#else
tscrollup(term.top, csiescseq.arg[0]);
2019-09-16 13:31:58 +00:00
#endif // SCROLLBACK_PATCH
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);
#if SIXEL_PATCH
if (IS_SET(MODE_ALTSCREEN)) {
for (im = term.images; im; im = im->next)
im->should_delete = 1;
}
#endif // SIXEL_PATCH
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 */
switch (csiescseq.arg[0]) {
case 5: /* Status Report "OK" `0n` */
ttywrite("\033[0n", sizeof("\033[0n") - 1, 0);
break;
case 6: /* Report Cursor Position (CPR) "<row>;<column>R" */
len = snprintf(buffer, sizeof(buffer), "\033[%i;%iR",
term.c.y+1, term.c.x+1);
ttywrite(buffer, len, 0);
break;
default:
goto unknown;
}
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;
2021-08-18 08:07:42 +00:00
#if CSI_22_23_PATCH
case 't': /* title stack operations */
switch (csiescseq.arg[0]) {
case 22: /* pust current title on stack */
switch (csiescseq.arg[1]) {
case 0:
case 1:
case 2:
xpushtitle();
break;
default:
goto unknown;
}
break;
case 23: /* pop last title from stack */
switch (csiescseq.arg[1]) {
case 0:
case 1:
case 2:
xsettitle(NULL, 1);
break;
default:
goto unknown;
}
break;
default:
goto unknown;
}
break;
#endif // CSI_22_23_PATCH
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)
{
size_t 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
osc4_color_response(int num)
{
int n;
char buf[32];
unsigned char r, g, b;
if (xgetcolor(num, &r, &g, &b)) {
fprintf(stderr, "erresc: failed to fetch osc4 color %d\n", num);
return;
}
n = snprintf(buf, sizeof buf, "\033]4;%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
num, r, r, g, g, b, b);
ttywrite(buf, n, 1);
}
void
osc_color_response(int index, int num)
{
int n;
char buf[32];
unsigned char r, g, b;
if (xgetcolor(index, &r, &g, &b)) {
fprintf(stderr, "erresc: failed to fetch osc color %d\n", index);
return;
}
n = snprintf(buf, sizeof buf, "\033]%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
num, r, r, g, g, b, b);
ttywrite(buf, n, 1);
}
void
strhandle(void)
{
char *p = NULL, *dec;
int j, narg, par;
2021-03-10 17:09:47 +00:00
#if SIXEL_PATCH
ImageList *new_image;
int i;
#endif // SIXEL_PATCH
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:
if (narg > 1) {
2021-08-18 08:07:42 +00:00
#if CSI_22_23_PATCH
xsettitle(strescseq.args[1], 0);
#else
xsettitle(strescseq.args[1]);
2021-08-18 08:07:42 +00:00
#endif // CSI_22_23_PATCH
xseticontitle(strescseq.args[1]);
}
return;
case 1:
if (narg > 1)
xseticontitle(strescseq.args[1]);
return;
case 2:
if (narg > 1)
2021-08-18 08:07:42 +00:00
#if CSI_22_23_PATCH
xsettitle(strescseq.args[1], 0);
#else
xsettitle(strescseq.args[1]);
2021-08-18 08:07:42 +00:00
#endif // CSI_22_23_PATCH
return;
case 52:
if (narg > 2 && allowwindowops) {
dec = base64dec(strescseq.args[2]);
if (dec) {
xsetsel(dec);
xclipcopy();
} else {
fprintf(stderr, "erresc: invalid base64\n");
}
}
return;
case 8: /* Clear Hyperlinks */
return;
case 10:
2021-05-08 14:50:06 +00:00
if (narg < 2)
break;
p = strescseq.args[1];
if (!strcmp(p, "?"))
osc_color_response(defaultfg, 10);
else if (xsetcolorname(defaultfg, p))
fprintf(stderr, "erresc: invalid foreground color: %s\n", p);
2021-05-08 14:50:06 +00:00
else
tfulldirt();
return;
case 11:
2021-05-08 14:50:06 +00:00
if (narg < 2)
break;
p = strescseq.args[1];
if (!strcmp(p, "?"))
osc_color_response(defaultbg, 11);
else if (xsetcolorname(defaultbg, p))
fprintf(stderr, "erresc: invalid background color: %s\n", p);
2021-05-08 14:50:06 +00:00
else
tfulldirt();
return;
case 12:
2021-05-08 14:50:06 +00:00
if (narg < 2)
break;
p = strescseq.args[1];
if (!strcmp(p, "?"))
osc_color_response(defaultcs, 12);
else if (xsetcolorname(defaultcs, p))
fprintf(stderr, "erresc: invalid cursor color: %s\n", p);
2021-05-08 14:50:06 +00:00
else
tfulldirt();
return;
2021-05-08 14:50:06 +00:00
case 4: /* color set */
if ((par == 4 && narg < 3) || narg < 2)
break;
p = strescseq.args[((par == 4) ? 2 : 1)];
/* FALLTHROUGH */
case 104: /* color reset */
if (par == 10)
j = defaultfg;
else if (par == 11)
j = defaultbg;
else if (par == 12)
j = defaultcs;
else
j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
if (p && !strcmp(p, "?"))
osc4_color_response(j);
else if (xsetcolorname(j, p)) {
if (par == 104 && narg <= 1) {
xloadcols();
return; /* color reset without parameter */
}
fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
j, p ? p : "(null)");
} else {
if (j == defaultbg)
xclearwin();
tfulldirt();
}
return;
}
break;
case 'k': /* old title set compatibility */
2021-08-18 08:07:42 +00:00
#if CSI_22_23_PATCH
xsettitle(strescseq.args[0], 0);
#else
xsettitle(strescseq.args[0]);
2021-08-18 08:07:42 +00:00
#endif // CSI_22_23_PATCH
return;
case 'P': /* DCS -- Device Control String */
2021-03-10 17:09:47 +00:00
#if SIXEL_PATCH
if (IS_SET(MODE_SIXEL)) {
term.mode &= ~MODE_SIXEL;
new_image = malloc(sizeof(ImageList));
memset(new_image, 0, sizeof(ImageList));
if (sixel_parser_finalize(&sixel_st, &new_image->pixels) != 0) {
2021-03-10 17:09:47 +00:00
perror("sixel_parser_finalize() failed");
sixel_parser_deinit(&sixel_st);
free(new_image);
2021-03-10 17:09:47 +00:00
return;
}
new_image->x = term.c.x;
new_image->y = term.c.y;
new_image->width = sixel_st.image.width;
new_image->height = sixel_st.image.height;
2021-03-10 17:09:47 +00:00
sixel_parser_deinit(&sixel_st);
if (term.images) {
ImageList *im;
for (im = term.images; im->next;)
im = im->next;
im->next = new_image;
new_image->prev = im;
} else {
term.images = new_image;
}
for (i = 0; i < (sixel_st.image.height + win.ch-1)/win.ch; ++i) {
int x;
Fix sixel issues and add a clearing sequence (#99) This patch fixes the following sixel issues: - The current sixel implementation cleared all cells from the left side of the image when the image was drawn. The fix only clears the cells where the image will be drawn. - The deletion routine didn't work correctly. In certain situations, it left the image or images undrawn. For example, if the first image was marked for deletion, it didn't draw the second one. - The drawing routine caused a high cpu usage, because XCopyArea() triggered the X server to send the NoExpose event, which caused sixels to be redrawn and the X server to send another NoExpose event and so on. This loop caused constant redraw of sixels and high cpu usage. The fix prevents the X server from sending GraphicsExpose and NoExpose events. The patch also adds a control sequence for removing sixels: Because the sixels are implemented as overlay images, they cannot be removed by clearing the underlaying cells. Therefore, we need a control sequence to remove them. I opted to choose ESC[6J as the control sequence because it is not used and the number refers to sixels. So when the lf file manager supports sixels [1], you can use the following minimal scripts to preview images in lf: previewer: #!/bin/sh case "$(readlink -f "$1")" in *.bmp|*.gif|*.jpg|*.jpeg|*.png|*.webp|*.six|*.svg|*.xpm) chafa -s "$(($2-3))x$3" -f sixels "$1" exit 1 ;; *) bat "$1" ;; esac cleaner: #!/bin/sh printf "\033[6J" >/dev/tty [1] https://github.com/gokcehan/lf/pull/1211
2023-06-12 14:02:19 +00:00
tclearregion(term.c.x, term.c.y, term.c.x+(sixel_st.image.width+win.cw-1)/win.cw-1, term.c.y);
2021-03-10 17:09:47 +00:00
for (x = term.c.x; x < MIN(term.col, term.c.x+(sixel_st.image.width+win.cw-1)/win.cw); x++)
term.line[term.c.y][x].mode |= ATTR_SIXEL;
Fix sixel issues and add a clearing sequence (#99) This patch fixes the following sixel issues: - The current sixel implementation cleared all cells from the left side of the image when the image was drawn. The fix only clears the cells where the image will be drawn. - The deletion routine didn't work correctly. In certain situations, it left the image or images undrawn. For example, if the first image was marked for deletion, it didn't draw the second one. - The drawing routine caused a high cpu usage, because XCopyArea() triggered the X server to send the NoExpose event, which caused sixels to be redrawn and the X server to send another NoExpose event and so on. This loop caused constant redraw of sixels and high cpu usage. The fix prevents the X server from sending GraphicsExpose and NoExpose events. The patch also adds a control sequence for removing sixels: Because the sixels are implemented as overlay images, they cannot be removed by clearing the underlaying cells. Therefore, we need a control sequence to remove them. I opted to choose ESC[6J as the control sequence because it is not used and the number refers to sixels. So when the lf file manager supports sixels [1], you can use the following minimal scripts to preview images in lf: previewer: #!/bin/sh case "$(readlink -f "$1")" in *.bmp|*.gif|*.jpg|*.jpeg|*.png|*.webp|*.six|*.svg|*.xpm) chafa -s "$(($2-3))x$3" -f sixels "$1" exit 1 ;; *) bat "$1" ;; esac cleaner: #!/bin/sh printf "\033[6J" >/dev/tty [1] https://github.com/gokcehan/lf/pull/1211
2023-06-12 14:02:19 +00:00
tnewline(0);
2021-03-10 17:09:47 +00:00
}
}
#endif // SIXEL_PATCH
2021-05-09 07:25:22 +00:00
#if SYNC_PATCH
/* https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec */
if (strstr(strescseq.buf, "=1s") == strescseq.buf)
tsync_begin(); /* BSU */
else if (strstr(strescseq.buf, "=2s") == strescseq.buf)
tsync_end(); /* ESU */
#endif // SYNC_PATCH
#if SIXEL_PATCH || SYNC_PATCH
return;
#endif // SIXEL_PATCH | SYNC_PATCH
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)
{
size_t 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)
{
strescseq = (STREscape){
.buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
.siz = STR_BUF_SIZ,
};
}
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
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];
const 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)
{
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#if SIXEL_PATCH
strreset();
#endif // SIXEL_PATCH
switch (c) {
case 0x90: /* DCS -- Device Control String */
c = 'P';
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#if SIXEL_PATCH
term.esc |= ESC_DCS;
#endif // SIXEL_PATCH
break;
case 0x9f: /* APC -- Application Program Command */
c = '_';
break;
case 0x9e: /* PM -- Privacy Message */
c = '^';
break;
case 0x9d: /* OSC -- Operating System Command */
c = ']';
break;
}
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#if !SIXEL_PATCH
strreset();
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#endif // SIXEL_PATCH
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);
/* FALLTHROUGH */
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 */
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#if SIXEL_PATCH
term.esc |= ESC_DCS;
#endif // SIXEL_PATCH
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) {
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#if SCROLLBACK_PATCH
tscrollup(term.top, 1, 1);
#else
tscrollup(term.top, 1);
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#endif // SCROLLBACK_PATCH
} 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 initial state */
treset();
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#if CSI_22_23_PATCH
xfreetitlestack();
#endif // CSI_22_23_PATCH
resettitle();
xloadcols();
xsetmode(0, MODE_HIDE);
#if SCROLLBACK_PATCH
if (!IS_SET(MODE_ALTSCREEN)) {
term.scr = 0;
term.histi = 0;
term.histn = 0;
}
#endif // SCROLLBACK_PATCH
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);
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#if SIXEL_PATCH
if (u < 127 || !IS_SET(MODE_UTF8 | MODE_SIXEL))
#else
if (u < 127 || !IS_SET(MODE_UTF8))
#endif // SIXEL_PATCH
{
c[0] = u;
width = len = 1;
} else {
len = utf8encode(u, c);
if (!control && (width = wcwidth(u)) == -1)
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)) {
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#if SIXEL_PATCH
term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
#else
term.esc &= ~(ESC_START|ESC_STR);
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#endif // SIXEL_PATCH
term.esc |= ESC_STR_END;
goto check_control_code;
}
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#if SIXEL_PATCH
if (IS_SET(MODE_SIXEL)) {
if (sixel_parser_parse(&sixel_st, (unsigned char *)&u, 1) != 0)
perror("sixel_parser_parse() failed");
return;
}
if (term.esc & ESC_DCS)
goto check_control_code;
#endif // SIXEL_PATCH
if (strescseq.len+len >= strescseq.siz) {
/*
* 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();
*/
if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2)
return;
strescseq.siz *= 2;
strescseq.buf = xrealloc(strescseq.buf, strescseq.siz);
}
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) {
/* in UTF-8 mode ignore handling C1 control characters */
if (IS_SET(MODE_UTF8) && ISCONTROLC1(u))
return;
tcontrolcode(u);
/*
* control codes are not shown ever
*/
if (!term.esc)
term.lastc = 0;
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;
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#if SIXEL_PATCH
} else if (term.esc & ESC_DCS) {
csiescseq.buf[csiescseq.len++] = u;
if (BETWEEN(u, 0x40, 0x7E)
|| csiescseq.len >= \
sizeof(csiescseq.buf)-1) {
csiparse();
dcshandle();
}
return;
#endif // SIXEL_PATCH
} 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;
}
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#if !VIM_BROWSE_PATCH
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if (selected(term.c.x, term.c.y))
selclear();
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#endif // VIM_BROWSE_PATCH
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));
gp->mode &= ~ATTR_WIDE;
}
if (term.c.x+width > term.col) {
if (IS_SET(MODE_WRAP))
tnewline(1);
else
tmoveto(term.col - width, term.c.y);
gp = &term.line[term.c.y][term.c.x];
}
tsetchar(u, &term.c.attr, term.c.x, term.c.y);
term.lastc = u;
if (width == 2) {
gp->mode |= ATTR_WIDE;
if (term.c.x+1 < term.col) {
if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {
gp[2].u = ' ';
gp[2].mode &= ~ATTR_WDUMMY;
}
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;
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#if SYNC_PATCH
int su0 = su;
twrite_aborted = 0;
#endif // SYNC_PATCH
for (n = 0; n < buflen; n += charsize) {
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#if SIXEL_PATCH
if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL))
#else
if (IS_SET(MODE_UTF8))
#endif // SIXEL_PATCH
{
/* process a complete utf8 char */
charsize = utf8decode(buf + n, &u, buflen - n);
if (charsize == 0)
break;
} else {
u = buf[n] & 0xFF;
charsize = 1;
}
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#if SYNC_PATCH
if (su0 && !su) {
twrite_aborted = 1;
break; // ESU - allow rendering before a new BSU
}
#endif // SYNC_PATCH
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;
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#if SCROLLBACK_PATCH
int j;
#endif // SCROLLBACK_PATCH
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#if VIM_BROWSE_PATCH
int const colSet = col, alt = IS_SET(MODE_ALTSCREEN), ini = buf == NULL;
col = MAX(col, buffCols);
row = MIN(row, buffSize);
int const minrow = MIN(row, term.row), mincol = MIN(col, buffCols);
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#elif COLUMNS_PATCH
int tmp = col;
int minrow, mincol;
if (!term.maxcol)
term.maxcol = term.col;
col = MAX(col, term.maxcol);
minrow = MIN(row, term.row);
mincol = MIN(col, term.maxcol);
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#else
int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col);
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#endif // VIM_BROWSE_PATCH
int *bp;
TCursor c;
#if KEYBOARDSELECT_PATCH
if ( row < term.row || col < term.col )
toggle_winmode(trt_kbdselect(XK_Escape, NULL, 0));
#endif // KEYBOARDSELECT_PATCH
if (col < 1 || row < 1) {
fprintf(stderr,
"tresize: error resizing to %dx%d\n", col, row);
return;
}
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#if VIM_BROWSE_PATCH
if (alt)
tswapscreen();
#endif // VIM_BROWSE_PATCH
/*
* 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++) {
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#if !VIM_BROWSE_PATCH
free(term.line[i]);
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#endif // VIM_BROWSE_PATCH
free(term.alt[i]);
}
/* ensure that both src and dst are not NULL */
if (i > 0) {
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#if !VIM_BROWSE_PATCH
memmove(term.line, term.line + i, row * sizeof(Line));
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#endif // VIM_BROWSE_PATCH
memmove(term.alt, term.alt + i, row * sizeof(Line));
}
for (i += row; i < term.row; i++) {
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#if !VIM_BROWSE_PATCH
free(term.line[i]);
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#endif // VIM_BROWSE_PATCH
free(term.alt[i]);
}
/* resize to new height */
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#if VIM_BROWSE_PATCH
buf = xrealloc(buf, (buffSize + row) * sizeof(Line));
mark = xrealloc(mark, col * row * sizeof(*mark));
#else
term.line = xrealloc(term.line, row * sizeof(Line));
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#endif // VIM_BROWSE_PATCH
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));
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#if SCROLLBACK_PATCH
Glyph gc=(Glyph){.bg=term.c.attr.bg, .fg=term.c.attr.fg, .u=' ', .mode=0};
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for (i = 0; i < HISTSIZE; i++) {
term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
for (j = mincol; j < col; j++)
term.hist[i][j] = gc;
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}
#endif // SCROLLBACK_PATCH
/* resize each row to new width, zero-pad if needed */
for (i = 0; i < minrow; i++) {
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#if !VIM_BROWSE_PATCH
term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
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#endif // VIM_BROWSE_PATCH
term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
}
/* allocate any new rows */
for (/* i = minrow */; i < row; i++) {
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#if !VIM_BROWSE_PATCH
term.line[i] = xmalloc(col * sizeof(Glyph));
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#endif // VIM_BROWSE_PATCH
term.alt[i] = xmalloc(col * sizeof(Glyph));
}
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#if VIM_BROWSE_PATCH
if (col > buffCols)
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#elif COLUMNS_PATCH
if (col > term.maxcol)
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#else
if (col > term.col)
#endif // VIM_BROWSE_PATCH
{
#if VIM_BROWSE_PATCH
bp = term.tabs + buffCols;
memset(bp, 0, sizeof(*term.tabs) * (col - buffCols));
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#elif COLUMNS_PATCH
bp = term.tabs + term.maxcol;
memset(bp, 0, sizeof(*term.tabs) * (col - term.maxcol));
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#else
bp = term.tabs + term.col;
memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
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#endif // VIM_BROWSE_PATCH
while (--bp > term.tabs && !*bp)
/* nothing */ ;
for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
*bp = 1;
}
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#if VIM_BROWSE_PATCH
Glyph g=(Glyph){.bg=term.c.attr.bg, .fg=term.c.attr.fg, .u=' ', .mode=0};
for (i = 0; i < buffSize; ++i) {
buf[i] = xrealloc(ini ? NULL : buf[i], col*sizeof(Glyph));
for (int j = ini ? 0 : buffCols; j < col; ++j) buf[i][j] = g;
}
for (i = 0; i < row; ++i) buf[buffSize + i] = buf[i];
term.line = &buf[*(histOp?&histOff:&insertOff) +=MAX(term.c.y-row+1,0)];
memset(mark, 0, col * row * sizeof(*mark));
#endif // VIM_BROWSE_PATCH
/* update terminal size */
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#if VIM_BROWSE_PATCH
term.col = colSet;
buffCols = col;
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#elif COLUMNS_PATCH
term.col = tmp;
term.maxcol = col;
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#else
term.col = col;
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#endif // VIM_BROWSE_PATCH
term.row = row;
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#if VIM_BROWSE_PATCH
if (alt)
tswapscreen();
#endif // VIM_BROWSE_PATCH
/* 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)
{
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#if CSI_22_23_PATCH
xsettitle(NULL, 0);
#else
xsettitle(NULL);
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#endif // CSI_22_23_PATCH
}
void
drawregion(int x1, int y1, int x2, int y2)
{
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#if VIM_BROWSE_PATCH
if (altToggle && histMode && !histOp)
memset(term.dirty, 0, sizeof(*term.dirty) * term.row);
int const o = !IS_SET(MODE_ALTSCREEN) && histMode && !histOp, h =rows();
#endif // VIM_BROWSE_PATCH
int y;
for (y = y1; y < y2; y++) {
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#if VIM_BROWSE_PATCH
int const oy = o ? (y + insertOff - histOff + h) % h : y;
if (!BETWEEN(oy, 0, term.row-1) || !term.dirty[y]) continue;
xdrawline(term.line[y], x1, oy, x2);
#else
if (!term.dirty[y])
continue;
term.dirty[y] = 0;
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#if SCROLLBACK_PATCH
xdrawline(TLINE(y), x1, y, x2);
#else
xdrawline(term.line[y], x1, y, x2);
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#endif // SCROLLBACK_PATCH
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#endif // VIM_BROWSE_PATCH
}
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#if VIM_BROWSE_PATCH
memset(&term.dirty[y1], 0, sizeof(*term.dirty) * (y2 - y1));
#endif // VIM_BROWSE_PATCH
}
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#include "patch/st_include.c"
void
draw(void)
{
int cx = term.c.x, ocx = term.ocx, ocy = term.ocy;
if (!xstartdraw())
return;
/* adjust cursor position */
LIMIT(term.ocx, 0, term.col-1);
LIMIT(term.ocy, 0, term.row-1);
if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
term.ocx--;
if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
cx--;
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#if VIM_BROWSE_PATCH
if (histMode)
historyPreDraw();
#endif // VIM_BROWSE_PATCH
drawregion(0, 0, term.col, term.row);
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#if VIM_BROWSE_PATCH
if (!histMode)
#elif SCROLLBACK_PATCH
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if (term.scr == 0)
#endif // SCROLLBACK_PATCH
#if LIGATURES_PATCH
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
term.ocx, term.ocy, term.line[term.ocy][term.ocx],
term.line[term.ocy], term.col);
#else
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
#endif // LIGATURES_PATCH
term.ocx = cx;
term.ocy = term.c.y;
xfinishdraw();
if (ocx != term.ocx || ocy != term.ocy)
xximspot(term.ocx, term.ocy);
}
void
redraw(void)
{
tfulldirt();
draw();
}