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1880 lines
42 KiB
1880 lines
42 KiB
/* See LICENSE for licence details. */
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#define _XOPEN_SOURCE 600
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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 <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 <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/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <X11/Xatom.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/cursorfont.h>
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#include <X11/keysym.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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#define USAGE \
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"st-" VERSION ", (c) 2010 st engineers\n" \
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"usage: st [-t title] [-c class] [-e cmd] [-v]\n"
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/* Arbitrary sizes */
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#define ESC_TITLE_SIZ 256
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#define ESC_BUF_SIZ 256
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#define ESC_ARG_SIZ 16
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#define DRAW_BUF_SIZ 1024
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#define UTF_SIZ 4
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#define SERRNO strerror(errno)
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a) / sizeof(a[0]))
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#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
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#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
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#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
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#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
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#define IS_SET(flag) (term.mode & (flag))
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/* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
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enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
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enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
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CURSOR_SAVE, CURSOR_LOAD };
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enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
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enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
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enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8,
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MODE_CRLF=16 };
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enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
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enum { SCREEN_UPDATE, SCREEN_REDRAW };
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enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
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#undef B0
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enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
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typedef struct {
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char c[UTF_SIZ]; /* character code */
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char mode; /* attribute flags */
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int fg; /* foreground */
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int bg; /* background */
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char state; /* state flags */
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} Glyph;
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typedef Glyph* Line;
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typedef struct {
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Glyph attr; /* current char attributes */
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int x;
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int y;
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char state;
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} TCursor;
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/* CSI Escape sequence structs */
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/* ESC '[' [[ [<priv>] <arg> [;]] <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;
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} CSIEscape;
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/* Internal representation of the screen */
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typedef struct {
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int row; /* nb row */
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int col; /* nb col */
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Line* line; /* screen */
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Line* alt; /* alternate screen */
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TCursor c; /* cursor */
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int top; /* top scroll limit */
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int bot; /* bottom scroll limit */
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int mode; /* terminal mode flags */
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int esc; /* escape state flags */
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char title[ESC_TITLE_SIZ];
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int titlelen;
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} Term;
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/* Purely graphic info */
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typedef struct {
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Display* dpy;
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Colormap cmap;
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Window win;
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Pixmap buf;
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XIM xim;
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XIC xic;
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int scr;
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int w; /* window width */
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int h; /* window height */
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int bufw; /* pixmap width */
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int bufh; /* pixmap height */
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int ch; /* char height */
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int cw; /* char width */
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char state; /* focus, redraw, visible */
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} XWindow;
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typedef struct {
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KeySym k;
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char s[ESC_BUF_SIZ];
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} Key;
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/* Drawing Context */
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typedef struct {
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unsigned long col[256];
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GC gc;
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struct {
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int ascent;
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int descent;
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short lbearing;
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short rbearing;
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XFontSet set;
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} font, bfont;
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} DC;
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/* TODO: use better name for vars... */
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typedef struct {
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int mode;
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int bx, by;
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int ex, ey;
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struct {int x, y;} b, e;
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char *clip;
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} Selection;
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#include "config.h"
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static void die(const char *errstr, ...);
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static void draw(int);
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static void execsh(void);
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static void sigchld(int);
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static void run(void);
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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 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 void tmoveto(int, int);
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static void tnew(int, int);
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static void tnewline(int);
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static void tputtab(void);
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static void tputc(char*);
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static void treset(void);
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static int tresize(int, int);
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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(char*);
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static void tsetscroll(int, int);
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static void tswapscreen(void);
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static void ttynew(void);
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static void ttyread(void);
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static void ttyresize(int, int);
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static void ttywrite(const char *, size_t);
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static void xdraws(char *, Glyph, int, int, int, int);
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static void xhints(void);
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static void xclear(int, int, int, int);
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static void xdrawcursor(void);
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static void xinit(void);
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static void xloadcols(void);
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static void xseturgency(int);
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static void xsetsel(char*);
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static void xresize(int, int);
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static void expose(XEvent *);
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static void visibility(XEvent *);
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static void unmap(XEvent *);
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static char* kmap(KeySym);
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static void kpress(XEvent *);
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static void resize(XEvent *);
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static void focus(XEvent *);
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static void brelease(XEvent *);
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static void bpress(XEvent *);
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static void bmotion(XEvent *);
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static void selnotify(XEvent *);
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static void selrequest(XEvent *);
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static void selinit(void);
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static inline int selected(int, int);
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static void selcopy(void);
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static void selpaste(void);
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static int utf8decode(char *, long *);
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static int utf8encode(long *, char *);
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static int utf8size(char *);
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static int isfullutf8(char *, int);
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static void (*handler[LASTEvent])(XEvent *) = {
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[KeyPress] = kpress,
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[ConfigureNotify] = resize,
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[VisibilityNotify] = visibility,
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[UnmapNotify] = unmap,
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[Expose] = expose,
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[FocusIn] = focus,
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[FocusOut] = focus,
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[MotionNotify] = bmotion,
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[ButtonPress] = bpress,
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[ButtonRelease] = brelease,
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[SelectionNotify] = selnotify,
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[SelectionRequest] = selrequest,
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};
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/* Globals */
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static DC dc;
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static XWindow xw;
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static Term term;
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static CSIEscape escseq;
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static int cmdfd;
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static pid_t pid;
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static Selection sel;
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static char **opt_cmd = NULL;
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static char *opt_title = NULL;
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static char *opt_class = NULL;
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int
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utf8decode(char *s, long *u) {
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unsigned char c;
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int i, n, rtn;
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rtn = 1;
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c = *s;
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if(~c&B7) { /* 0xxxxxxx */
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*u = c;
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return rtn;
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} else if((c&(B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
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*u = c&(B4|B3|B2|B1|B0);
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n = 1;
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} else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
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*u = c&(B3|B2|B1|B0);
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n = 2;
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} else if((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
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*u = c&(B2|B1|B0);
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n = 3;
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} else
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goto invalid;
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for(i=n,++s; i>0; --i,++rtn,++s) {
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c = *s;
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if((c&(B7|B6)) != B7) /* 10xxxxxx */
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goto invalid;
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*u <<= 6;
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*u |= c&(B5|B4|B3|B2|B1|B0);
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}
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if((n == 1 && *u < 0x80) ||
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(n == 2 && *u < 0x800) ||
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(n == 3 && *u < 0x10000) ||
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(*u >= 0xD800 && *u <= 0xDFFF))
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goto invalid;
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return rtn;
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invalid:
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*u = 0xFFFD;
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return rtn;
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}
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int
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utf8encode(long *u, char *s) {
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unsigned char *sp;
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unsigned long uc;
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int i, n;
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sp = (unsigned char*) s;
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uc = *u;
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if(uc < 0x80) {
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*sp = uc; /* 0xxxxxxx */
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return 1;
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} else if(*u < 0x800) {
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*sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
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n = 1;
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} else if(uc < 0x10000) {
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*sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
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n = 2;
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} else if(uc <= 0x10FFFF) {
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*sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
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n = 3;
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} else {
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goto invalid;
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}
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for(i=n,++sp; i>0; --i,++sp)
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*sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
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return n+1;
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invalid:
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/* U+FFFD */
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*s++ = '\xEF';
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*s++ = '\xBF';
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*s = '\xBD';
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return 3;
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}
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/* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
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UTF-8 otherwise return 0 */
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int
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isfullutf8(char *s, int b) {
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unsigned char *c1, *c2, *c3;
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c1 = (unsigned char *) s;
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c2 = (unsigned char *) ++s;
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c3 = (unsigned char *) ++s;
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if(b < 1)
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return 0;
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else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
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return 0;
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else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
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((b == 1) ||
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((b == 2) && (*c2&(B7|B6)) == B7)))
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return 0;
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else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
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((b == 1) ||
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((b == 2) && (*c2&(B7|B6)) == B7) ||
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((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
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return 0;
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else
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return 1;
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}
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int
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utf8size(char *s) {
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unsigned char c = *s;
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if (~c&B7)
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return 1;
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else if ((c&(B7|B6|B5)) == (B7|B6))
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return 2;
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else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
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return 3;
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else
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return 4;
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}
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void
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selinit(void) {
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sel.mode = 0;
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sel.bx = -1;
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sel.clip = NULL;
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}
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static inline int
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selected(int x, int y) {
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if(sel.ey == y && sel.by == y) {
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int bx = MIN(sel.bx, sel.ex);
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int ex = MAX(sel.bx, sel.ex);
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return BETWEEN(x, bx, ex);
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}
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return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
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|| (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
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}
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void
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getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
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if(b)
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*b = e->xbutton.button;
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*x = e->xbutton.x/xw.cw;
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*y = e->xbutton.y/xw.ch;
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sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
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sel.b.y = MIN(sel.by, sel.ey);
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sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
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sel.e.y = MAX(sel.by, sel.ey);
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}
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void
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bpress(XEvent *e) {
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sel.mode = 1;
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sel.ex = sel.bx = e->xbutton.x/xw.cw;
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sel.ey = sel.by = e->xbutton.y/xw.ch;
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}
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void
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selcopy(void) {
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char *str, *ptr;
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int x, y, sz, sl, ls = 0;
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if(sel.bx == -1)
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str = NULL;
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else {
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sz = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
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ptr = str = malloc(sz);
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for(y = 0; y < term.row; y++) {
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for(x = 0; x < term.col; x++)
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if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y))) {
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sl = utf8size(term.line[y][x].c);
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memcpy(ptr, term.line[y][x].c, sl);
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ptr += sl;
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}
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if(ls)
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*ptr = '\n', ptr++;
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}
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*ptr = 0;
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}
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xsetsel(str);
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}
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void
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selnotify(XEvent *e) {
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unsigned long nitems;
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unsigned long ofs, rem;
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int format;
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unsigned char *data;
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Atom type;
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ofs = 0;
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do {
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if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
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False, AnyPropertyType, &type, &format,
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&nitems, &rem, &data)) {
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fprintf(stderr, "Clipboard allocation failed\n");
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return;
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}
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ttywrite((const char *) data, nitems * format / 8);
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XFree(data);
|
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/* number of 32-bit chunks returned */
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ofs += nitems * format / 32;
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} while(rem > 0);
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}
|
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|
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void
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selpaste() {
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XConvertSelection(xw.dpy, XA_PRIMARY, XA_STRING, XA_PRIMARY, xw.win, CurrentTime);
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}
|
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|
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void
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selrequest(XEvent *e) {
|
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XSelectionRequestEvent *xsre;
|
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XSelectionEvent xev;
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Atom xa_targets;
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|
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xsre = (XSelectionRequestEvent *) e;
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xev.type = SelectionNotify;
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xev.requestor = xsre->requestor;
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xev.selection = xsre->selection;
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xev.target = xsre->target;
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xev.time = xsre->time;
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/* reject */
|
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xev.property = None;
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|
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xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
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if(xsre->target == xa_targets) {
|
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/* respond with the supported type */
|
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Atom string = XA_STRING;
|
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XChangeProperty(xsre->display, xsre->requestor, xsre->property,
|
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XA_ATOM, 32, PropModeReplace,
|
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(unsigned char *) &string, 1);
|
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xev.property = xsre->property;
|
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} else if(xsre->target == XA_STRING) {
|
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XChangeProperty(xsre->display, xsre->requestor, xsre->property,
|
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xsre->target, 8, PropModeReplace,
|
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(unsigned char *) sel.clip, strlen(sel.clip));
|
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xev.property = xsre->property;
|
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}
|
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|
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/* all done, send a notification to the listener */
|
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if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
|
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fprintf(stderr, "Error sending SelectionNotify event\n");
|
|
}
|
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|
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void
|
|
xsetsel(char *str) {
|
|
/* register the selection for both the clipboard and the primary */
|
|
Atom clipboard;
|
|
|
|
free(sel.clip);
|
|
sel.clip = str;
|
|
|
|
XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
|
|
|
|
clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
|
|
XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
|
|
|
|
XFlush(xw.dpy);
|
|
}
|
|
|
|
/* TODO: doubleclick to select word */
|
|
void
|
|
brelease(XEvent *e) {
|
|
int b;
|
|
sel.mode = 0;
|
|
getbuttoninfo(e, &b, &sel.ex, &sel.ey);
|
|
if(sel.bx==sel.ex && sel.by==sel.ey) {
|
|
sel.bx = -1;
|
|
if(b==2)
|
|
selpaste();
|
|
} else {
|
|
if(b==1)
|
|
selcopy();
|
|
}
|
|
draw(1);
|
|
}
|
|
|
|
void
|
|
bmotion(XEvent *e) {
|
|
if (sel.mode) {
|
|
getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
|
|
/* XXX: draw() can't keep up, disabled for now.
|
|
selection is visible on button release.
|
|
draw(1); */
|
|
}
|
|
}
|
|
|
|
void
|
|
die(const char *errstr, ...) {
|
|
va_list ap;
|
|
|
|
va_start(ap, errstr);
|
|
vfprintf(stderr, errstr, ap);
|
|
va_end(ap);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
void
|
|
execsh(void) {
|
|
char **args;
|
|
char *envshell = getenv("SHELL");
|
|
|
|
DEFAULT(envshell, "sh");
|
|
putenv("TERM="TNAME);
|
|
args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
|
|
execvp(args[0], args);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
void
|
|
sigchld(int a) {
|
|
int stat = 0;
|
|
if(waitpid(pid, &stat, 0) < 0)
|
|
die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
|
|
if(WIFEXITED(stat))
|
|
exit(WEXITSTATUS(stat));
|
|
else
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
void
|
|
ttynew(void) {
|
|
int m, s;
|
|
|
|
/* seems to work fine on linux, openbsd and freebsd */
|
|
struct winsize w = {term.row, term.col, 0, 0};
|
|
if(openpty(&m, &s, NULL, NULL, &w) < 0)
|
|
die("openpty failed: %s\n", SERRNO);
|
|
|
|
switch(pid = fork()) {
|
|
case -1:
|
|
die("fork failed\n");
|
|
break;
|
|
case 0:
|
|
setsid(); /* create a new process group */
|
|
dup2(s, STDIN_FILENO);
|
|
dup2(s, STDOUT_FILENO);
|
|
dup2(s, STDERR_FILENO);
|
|
if(ioctl(s, TIOCSCTTY, NULL) < 0)
|
|
die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
|
|
close(s);
|
|
close(m);
|
|
execsh();
|
|
break;
|
|
default:
|
|
close(s);
|
|
cmdfd = m;
|
|
signal(SIGCHLD, sigchld);
|
|
}
|
|
}
|
|
|
|
void
|
|
dump(char c) {
|
|
static int col;
|
|
fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
|
|
if(++col % 10 == 0)
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
void
|
|
ttyread(void) {
|
|
static char buf[BUFSIZ];
|
|
static int buflen = 0;
|
|
char *ptr;
|
|
char s[UTF_SIZ];
|
|
int charsize; /* size of utf8 char in bytes */
|
|
long utf8c;
|
|
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", SERRNO);
|
|
|
|
/* process every complete utf8 char */
|
|
buflen += ret;
|
|
ptr = buf;
|
|
while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
|
|
charsize = utf8decode(ptr, &utf8c);
|
|
utf8encode(&utf8c, s);
|
|
tputc(s);
|
|
ptr += charsize;
|
|
buflen -= charsize;
|
|
}
|
|
|
|
/* keep any uncomplete utf8 char for the next call */
|
|
memmove(buf, ptr, buflen);
|
|
}
|
|
|
|
void
|
|
ttywrite(const char *s, size_t n) {
|
|
if(write(cmdfd, s, n) == -1)
|
|
die("write error on tty: %s\n", SERRNO);
|
|
}
|
|
|
|
void
|
|
ttyresize(int x, int y) {
|
|
struct winsize w;
|
|
|
|
w.ws_row = term.row;
|
|
w.ws_col = term.col;
|
|
w.ws_xpixel = w.ws_ypixel = 0;
|
|
if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
|
|
fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
|
|
}
|
|
|
|
void
|
|
tcursor(int mode) {
|
|
static TCursor c;
|
|
|
|
if(mode == CURSOR_SAVE)
|
|
c = term.c;
|
|
else if(mode == CURSOR_LOAD)
|
|
term.c = c, tmoveto(c.x, c.y);
|
|
}
|
|
|
|
void
|
|
treset(void) {
|
|
term.c = (TCursor){{
|
|
.mode = ATTR_NULL,
|
|
.fg = DefaultFG,
|
|
.bg = DefaultBG
|
|
}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
|
|
|
|
term.top = 0, term.bot = term.row - 1;
|
|
term.mode = MODE_WRAP;
|
|
tclearregion(0, 0, term.col-1, term.row-1);
|
|
}
|
|
|
|
void
|
|
tnew(int col, int row) {
|
|
/* set screen size */
|
|
term.row = row, term.col = col;
|
|
term.line = malloc(term.row * sizeof(Line));
|
|
term.alt = malloc(term.row * sizeof(Line));
|
|
for(row = 0 ; row < term.row; row++) {
|
|
term.line[row] = malloc(term.col * sizeof(Glyph));
|
|
term.alt [row] = malloc(term.col * sizeof(Glyph));
|
|
}
|
|
/* setup screen */
|
|
treset();
|
|
}
|
|
|
|
void
|
|
tswapscreen(void) {
|
|
Line* tmp = term.line;
|
|
term.line = term.alt;
|
|
term.alt = tmp;
|
|
term.mode ^= MODE_ALTSCREEN;
|
|
}
|
|
|
|
void
|
|
tscrolldown(int orig, int n) {
|
|
int i;
|
|
Line temp;
|
|
|
|
LIMIT(n, 0, term.bot-orig+1);
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
for(i = orig; i <= term.bot-n; i++) {
|
|
temp = term.line[i];
|
|
term.line[i] = term.line[i+n];
|
|
term.line[i+n] = temp;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
/* int noarg = 1; */
|
|
char *p = escseq.buf;
|
|
|
|
escseq.narg = 0;
|
|
if(*p == '?')
|
|
escseq.priv = 1, p++;
|
|
|
|
while(p < escseq.buf+escseq.len) {
|
|
while(isdigit(*p)) {
|
|
escseq.arg[escseq.narg] *= 10;
|
|
escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
|
|
}
|
|
if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
|
|
escseq.narg++, p++;
|
|
else {
|
|
escseq.mode = *p;
|
|
escseq.narg++;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
tmoveto(int x, int y) {
|
|
LIMIT(x, 0, term.col-1);
|
|
LIMIT(y, 0, term.row-1);
|
|
term.c.state &= ~CURSOR_WRAPNEXT;
|
|
term.c.x = x;
|
|
term.c.y = y;
|
|
}
|
|
|
|
void
|
|
tsetchar(char *c) {
|
|
term.line[term.c.y][term.c.x] = term.c.attr;
|
|
memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
|
|
term.line[term.c.y][term.c.x].state |= GLYPH_SET;
|
|
}
|
|
|
|
void
|
|
tclearregion(int x1, int y1, int x2, int y2) {
|
|
int x, y, temp;
|
|
|
|
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++)
|
|
for(x = x1; x <= x2; x++)
|
|
term.line[y][x].state = 0;
|
|
}
|
|
|
|
void
|
|
tdeletechar(int n) {
|
|
int src = term.c.x + n;
|
|
int dst = term.c.x;
|
|
int size = term.col - src;
|
|
|
|
if(src >= term.col) {
|
|
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
|
|
return;
|
|
}
|
|
memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
|
|
tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
|
|
}
|
|
|
|
void
|
|
tinsertblank(int n) {
|
|
int src = term.c.x;
|
|
int dst = src + n;
|
|
int size = term.col - dst;
|
|
|
|
if(dst >= term.col) {
|
|
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
|
|
return;
|
|
}
|
|
memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
|
|
tclearregion(src, term.c.y, dst - 1, term.c.y);
|
|
}
|
|
|
|
void
|
|
tinsertblankline(int n) {
|
|
if(term.c.y < term.top || term.c.y > term.bot)
|
|
return;
|
|
|
|
tscrolldown(term.c.y, n);
|
|
}
|
|
|
|
void
|
|
tdeleteline(int n) {
|
|
if(term.c.y < term.top || term.c.y > term.bot)
|
|
return;
|
|
|
|
tscrollup(term.c.y, n);
|
|
}
|
|
|
|
void
|
|
tsetattr(int *attr, int l) {
|
|
int i;
|
|
|
|
for(i = 0; i < l; i++) {
|
|
switch(attr[i]) {
|
|
case 0:
|
|
term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
|
|
term.c.attr.fg = DefaultFG;
|
|
term.c.attr.bg = DefaultBG;
|
|
break;
|
|
case 1:
|
|
term.c.attr.mode |= ATTR_BOLD;
|
|
break;
|
|
case 4:
|
|
term.c.attr.mode |= ATTR_UNDERLINE;
|
|
break;
|
|
case 7:
|
|
term.c.attr.mode |= ATTR_REVERSE;
|
|
break;
|
|
case 22:
|
|
term.c.attr.mode &= ~ATTR_BOLD;
|
|
break;
|
|
case 24:
|
|
term.c.attr.mode &= ~ATTR_UNDERLINE;
|
|
break;
|
|
case 27:
|
|
term.c.attr.mode &= ~ATTR_REVERSE;
|
|
break;
|
|
case 38:
|
|
if (i + 2 < l && attr[i + 1] == 5) {
|
|
i += 2;
|
|
if (BETWEEN(attr[i], 0, 255))
|
|
term.c.attr.fg = attr[i];
|
|
else
|
|
fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
|
|
}
|
|
else
|
|
fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
|
|
break;
|
|
case 39:
|
|
term.c.attr.fg = DefaultFG;
|
|
break;
|
|
case 48:
|
|
if (i + 2 < l && attr[i + 1] == 5) {
|
|
i += 2;
|
|
if (BETWEEN(attr[i], 0, 255))
|
|
term.c.attr.bg = attr[i];
|
|
else
|
|
fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
|
|
}
|
|
else
|
|
fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
|
|
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.fg = attr[i] - 100 + 8;
|
|
else
|
|
fprintf(stderr, "erresc: 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
|
|
csihandle(void) {
|
|
switch(escseq.mode) {
|
|
default:
|
|
unknown:
|
|
fprintf(stderr, "erresc: unknown csi ");
|
|
csidump();
|
|
/* die(""); */
|
|
break;
|
|
case '@': /* ICH -- Insert <n> blank char */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tinsertblank(escseq.arg[0]);
|
|
break;
|
|
case 'A': /* CUU -- Cursor <n> Up */
|
|
case 'e':
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x, term.c.y-escseq.arg[0]);
|
|
break;
|
|
case 'B': /* CUD -- Cursor <n> Down */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x, term.c.y+escseq.arg[0]);
|
|
break;
|
|
case 'C': /* CUF -- Cursor <n> Forward */
|
|
case 'a':
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x+escseq.arg[0], term.c.y);
|
|
break;
|
|
case 'D': /* CUB -- Cursor <n> Backward */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x-escseq.arg[0], term.c.y);
|
|
break;
|
|
case 'E': /* CNL -- Cursor <n> Down and first col */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(0, term.c.y+escseq.arg[0]);
|
|
break;
|
|
case 'F': /* CPL -- Cursor <n> Up and first col */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(0, term.c.y-escseq.arg[0]);
|
|
break;
|
|
case 'G': /* CHA -- Move to <col> */
|
|
case '`': /* XXX: HPA -- same? */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(escseq.arg[0]-1, term.c.y);
|
|
break;
|
|
case 'H': /* CUP -- Move to <row> <col> */
|
|
case 'f': /* XXX: HVP -- same? */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
DEFAULT(escseq.arg[1], 1);
|
|
tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
|
|
break;
|
|
/* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
|
|
case 'J': /* ED -- Clear screen */
|
|
switch(escseq.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(escseq.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(escseq.arg[0], 1);
|
|
tscrollup(term.top, escseq.arg[0]);
|
|
break;
|
|
case 'T': /* SD -- Scroll <n> line down */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tscrolldown(term.top, escseq.arg[0]);
|
|
break;
|
|
case 'L': /* IL -- Insert <n> blank lines */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tinsertblankline(escseq.arg[0]);
|
|
break;
|
|
case 'l': /* RM -- Reset Mode */
|
|
if(escseq.priv) {
|
|
switch(escseq.arg[0]) {
|
|
case 1:
|
|
term.mode &= ~MODE_APPKEYPAD;
|
|
break;
|
|
case 5: /* TODO: DECSCNM -- Remove reverse video */
|
|
break;
|
|
case 7:
|
|
term.mode &= ~MODE_WRAP;
|
|
break;
|
|
case 12: /* att610 -- Stop blinking cursor (IGNORED) */
|
|
break;
|
|
case 20:
|
|
term.mode &= ~MODE_CRLF;
|
|
break;
|
|
case 25:
|
|
term.c.state |= CURSOR_HIDE;
|
|
break;
|
|
case 1049: /* = 1047 and 1048 */
|
|
case 1047:
|
|
if(IS_SET(MODE_ALTSCREEN)) {
|
|
tclearregion(0, 0, term.col-1, term.row-1);
|
|
tswapscreen();
|
|
}
|
|
if(escseq.arg[0] == 1047)
|
|
break;
|
|
case 1048:
|
|
tcursor(CURSOR_LOAD);
|
|
break;
|
|
default:
|
|
goto unknown;
|
|
}
|
|
} else {
|
|
switch(escseq.arg[0]) {
|
|
case 4:
|
|
term.mode &= ~MODE_INSERT;
|
|
break;
|
|
default:
|
|
goto unknown;
|
|
}
|
|
}
|
|
break;
|
|
case 'M': /* DL -- Delete <n> lines */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tdeleteline(escseq.arg[0]);
|
|
break;
|
|
case 'X': /* ECH -- Erase <n> char */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
|
|
break;
|
|
case 'P': /* DCH -- Delete <n> char */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tdeletechar(escseq.arg[0]);
|
|
break;
|
|
/* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
|
|
case 'd': /* VPA -- Move to <row> */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x, escseq.arg[0]-1);
|
|
break;
|
|
case 'h': /* SM -- Set terminal mode */
|
|
if(escseq.priv) {
|
|
switch(escseq.arg[0]) {
|
|
case 1:
|
|
term.mode |= MODE_APPKEYPAD;
|
|
break;
|
|
case 5: /* DECSCNM -- Reverve video */
|
|
/* TODO: set REVERSE on the whole screen (f) */
|
|
break;
|
|
case 7:
|
|
term.mode |= MODE_WRAP;
|
|
break;
|
|
case 20:
|
|
term.mode |= MODE_CRLF;
|
|
break;
|
|
case 12: /* att610 -- Start blinking cursor (IGNORED) */
|
|
/* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
|
|
if(escseq.narg > 1 && escseq.arg[1] != 25)
|
|
break;
|
|
case 25:
|
|
term.c.state &= ~CURSOR_HIDE;
|
|
break;
|
|
case 1049: /* = 1047 and 1048 */
|
|
case 1047:
|
|
if(IS_SET(MODE_ALTSCREEN))
|
|
tclearregion(0, 0, term.col-1, term.row-1);
|
|
else
|
|
tswapscreen();
|
|
if(escseq.arg[0] == 1047)
|
|
break;
|
|
case 1048:
|
|
tcursor(CURSOR_SAVE);
|
|
break;
|
|
default: goto unknown;
|
|
}
|
|
} else {
|
|
switch(escseq.arg[0]) {
|
|
case 4:
|
|
term.mode |= MODE_INSERT;
|
|
break;
|
|
default: goto unknown;
|
|
}
|
|
};
|
|
break;
|
|
case 'm': /* SGR -- Terminal attribute (color) */
|
|
tsetattr(escseq.arg, escseq.narg);
|
|
break;
|
|
case 'r': /* DECSTBM -- Set Scrolling Region */
|
|
if(escseq.priv)
|
|
goto unknown;
|
|
else {
|
|
DEFAULT(escseq.arg[0], 1);
|
|
DEFAULT(escseq.arg[1], term.row);
|
|
tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
|
|
tmoveto(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;
|
|
}
|
|
}
|
|
|
|
void
|
|
csidump(void) {
|
|
int i;
|
|
printf("ESC [ %s", escseq.priv ? "? " : "");
|
|
if(escseq.narg)
|
|
for(i = 0; i < escseq.narg; i++)
|
|
printf("%d ", escseq.arg[i]);
|
|
if(escseq.mode)
|
|
putchar(escseq.mode);
|
|
putchar('\n');
|
|
}
|
|
|
|
void
|
|
csireset(void) {
|
|
memset(&escseq, 0, sizeof(escseq));
|
|
}
|
|
|
|
void
|
|
tputtab(void) {
|
|
int space = TAB - term.c.x % TAB;
|
|
tmoveto(term.c.x + space, term.c.y);
|
|
}
|
|
|
|
void
|
|
tputc(char *c) {
|
|
char ascii = *c;
|
|
if(term.esc & ESC_START) {
|
|
if(term.esc & ESC_CSI) {
|
|
escseq.buf[escseq.len++] = ascii;
|
|
if(BETWEEN(ascii, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
|
|
term.esc = 0;
|
|
csiparse(), csihandle();
|
|
}
|
|
/* TODO: handle other OSC */
|
|
} else if(term.esc & ESC_OSC) {
|
|
if(ascii == ';') {
|
|
term.titlelen = 0;
|
|
term.esc = ESC_START | ESC_TITLE;
|
|
}
|
|
} else if(term.esc & ESC_TITLE) {
|
|
if(ascii == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
|
|
term.esc = 0;
|
|
term.title[term.titlelen] = '\0';
|
|
XStoreName(xw.dpy, xw.win, term.title);
|
|
} else {
|
|
term.title[term.titlelen++] = ascii;
|
|
}
|
|
} else if(term.esc & ESC_ALTCHARSET) {
|
|
switch(ascii) {
|
|
case '0': /* Line drawing crap */
|
|
term.c.attr.mode |= ATTR_GFX;
|
|
break;
|
|
case 'B': /* Back to regular text */
|
|
term.c.attr.mode &= ~ATTR_GFX;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
|
|
}
|
|
term.esc = 0;
|
|
} else {
|
|
switch(ascii) {
|
|
case '[':
|
|
term.esc |= ESC_CSI;
|
|
break;
|
|
case ']':
|
|
term.esc |= ESC_OSC;
|
|
break;
|
|
case '(':
|
|
term.esc |= ESC_ALTCHARSET;
|
|
break;
|
|
case 'D': /* IND -- Linefeed */
|
|
if(term.c.y == term.bot)
|
|
tscrollup(term.top, 1);
|
|
else
|
|
tmoveto(term.c.x, term.c.y+1);
|
|
term.esc = 0;
|
|
break;
|
|
case 'E': /* NEL -- Next line */
|
|
tnewline(1); /* always go to first col */
|
|
term.esc = 0;
|
|
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);
|
|
term.esc = 0;
|
|
break;
|
|
case 'c': /* RIS -- Reset to inital state */
|
|
treset();
|
|
term.esc = 0;
|
|
break;
|
|
case '=': /* DECPAM -- Application keypad */
|
|
term.mode |= MODE_APPKEYPAD;
|
|
term.esc = 0;
|
|
break;
|
|
case '>': /* DECPNM -- Normal keypad */
|
|
term.mode &= ~MODE_APPKEYPAD;
|
|
term.esc = 0;
|
|
break;
|
|
case '7': /* DECSC -- Save Cursor */
|
|
tcursor(CURSOR_SAVE);
|
|
term.esc = 0;
|
|
break;
|
|
case '8': /* DECRC -- Restore Cursor */
|
|
tcursor(CURSOR_LOAD);
|
|
term.esc = 0;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
|
|
(unsigned char) ascii, isprint(ascii)?ascii:'.');
|
|
term.esc = 0;
|
|
}
|
|
}
|
|
} else {
|
|
switch(ascii) {
|
|
case '\t':
|
|
tputtab();
|
|
break;
|
|
case '\b':
|
|
tmoveto(term.c.x-1, term.c.y);
|
|
break;
|
|
case '\r':
|
|
tmoveto(0, term.c.y);
|
|
break;
|
|
case '\f':
|
|
case '\v':
|
|
case '\n':
|
|
/* go to first col if the mode is set */
|
|
tnewline(IS_SET(MODE_CRLF));
|
|
break;
|
|
case '\a':
|
|
if(!(xw.state & WIN_FOCUSED))
|
|
xseturgency(1);
|
|
break;
|
|
case '\033':
|
|
csireset();
|
|
term.esc = ESC_START;
|
|
break;
|
|
default:
|
|
if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
|
|
tnewline(1); /* always go to first col */
|
|
tsetchar(c);
|
|
if(term.c.x+1 < term.col)
|
|
tmoveto(term.c.x+1, term.c.y);
|
|
else
|
|
term.c.state |= CURSOR_WRAPNEXT;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
tresize(int col, int row) {
|
|
int i, x;
|
|
int minrow = MIN(row, term.row);
|
|
int mincol = MIN(col, term.col);
|
|
int slide = term.c.y - row + 1;
|
|
|
|
if(col < 1 || row < 1)
|
|
return 0;
|
|
|
|
/* free unneeded rows */
|
|
i = 0;
|
|
if(slide > 0) {
|
|
/* 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 < slide; i++) {
|
|
free(term.line[i]);
|
|
free(term.alt[i]);
|
|
}
|
|
memmove(term.line, term.line + slide, row * sizeof(Line));
|
|
memmove(term.alt, term.alt + slide, row * sizeof(Line));
|
|
}
|
|
for(i += row; i < term.row; i++) {
|
|
free(term.line[i]);
|
|
free(term.alt[i]);
|
|
}
|
|
|
|
/* resize to new height */
|
|
term.line = realloc(term.line, row * sizeof(Line));
|
|
term.alt = realloc(term.alt, row * sizeof(Line));
|
|
|
|
/* resize each row to new width, zero-pad if needed */
|
|
for(i = 0; i < minrow; i++) {
|
|
term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
|
|
term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
|
|
for(x = mincol; x < col; x++) {
|
|
term.line[i][x].state = 0;
|
|
term.alt[i][x].state = 0;
|
|
}
|
|
}
|
|
|
|
/* allocate any new rows */
|
|
for(/* i == minrow */; i < row; i++) {
|
|
term.line[i] = calloc(col, sizeof(Glyph));
|
|
term.alt [i] = calloc(col, sizeof(Glyph));
|
|
}
|
|
|
|
/* update terminal size */
|
|
term.col = col, term.row = row;
|
|
/* make use of the LIMIT in tmoveto */
|
|
tmoveto(term.c.x, term.c.y);
|
|
/* reset scrolling region */
|
|
tsetscroll(0, row-1);
|
|
return (slide > 0);
|
|
}
|
|
|
|
void
|
|
xresize(int col, int row) {
|
|
Pixmap newbuf;
|
|
int oldw, oldh;
|
|
|
|
oldw = xw.bufw;
|
|
oldh = xw.bufh;
|
|
xw.bufw = MAX(1, col * xw.cw);
|
|
xw.bufh = MAX(1, row * xw.ch);
|
|
newbuf = XCreatePixmap(xw.dpy, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dpy, xw.scr));
|
|
XCopyArea(xw.dpy, xw.buf, newbuf, dc.gc, 0, 0, xw.bufw, xw.bufh, 0, 0);
|
|
XFreePixmap(xw.dpy, xw.buf);
|
|
XSetForeground(xw.dpy, dc.gc, dc.col[DefaultBG]);
|
|
if(xw.bufw > oldw)
|
|
XFillRectangle(xw.dpy, newbuf, dc.gc, oldw, 0,
|
|
xw.bufw-oldw, MIN(xw.bufh, oldh));
|
|
else if(xw.bufw < oldw && (BORDER > 0 || xw.w > xw.bufw))
|
|
XClearArea(xw.dpy, xw.win, BORDER+xw.bufw, BORDER,
|
|
xw.w-xw.bufh-BORDER, BORDER+MIN(xw.bufh, oldh),
|
|
False);
|
|
if(xw.bufh > oldh)
|
|
XFillRectangle(xw.dpy, newbuf, dc.gc, 0, oldh,
|
|
xw.bufw, xw.bufh-oldh);
|
|
else if(xw.bufh < oldh && (BORDER > 0 || xw.h > xw.bufh))
|
|
XClearArea(xw.dpy, xw.win, BORDER, BORDER+xw.bufh,
|
|
xw.w-2*BORDER, xw.h-xw.bufh-BORDER,
|
|
False);
|
|
xw.buf = newbuf;
|
|
}
|
|
|
|
void
|
|
xloadcols(void) {
|
|
int i, r, g, b;
|
|
XColor color;
|
|
unsigned long white = WhitePixel(xw.dpy, xw.scr);
|
|
|
|
for(i = 0; i < 16; i++) {
|
|
if (!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
|
|
dc.col[i] = white;
|
|
fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
|
|
} else
|
|
dc.col[i] = color.pixel;
|
|
}
|
|
|
|
/* same colors as xterm */
|
|
for(r = 0; r < 6; r++)
|
|
for(g = 0; g < 6; g++)
|
|
for(b = 0; b < 6; b++) {
|
|
color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
|
|
color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
|
|
color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
|
|
if (!XAllocColor(xw.dpy, xw.cmap, &color)) {
|
|
dc.col[i] = white;
|
|
fprintf(stderr, "Could not allocate color %d\n", i);
|
|
} else
|
|
dc.col[i] = color.pixel;
|
|
i++;
|
|
}
|
|
|
|
for(r = 0; r < 24; r++, i++) {
|
|
color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
|
|
if (!XAllocColor(xw.dpy, xw.cmap, &color)) {
|
|
dc.col[i] = white;
|
|
fprintf(stderr, "Could not allocate color %d\n", i);
|
|
} else
|
|
dc.col[i] = color.pixel;
|
|
}
|
|
}
|
|
|
|
void
|
|
xclear(int x1, int y1, int x2, int y2) {
|
|
XSetForeground(xw.dpy, dc.gc, dc.col[DefaultBG]);
|
|
XFillRectangle(xw.dpy, xw.buf, dc.gc,
|
|
x1 * xw.cw, y1 * xw.ch,
|
|
(x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
|
|
}
|
|
|
|
void
|
|
xhints(void)
|
|
{
|
|
XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
|
|
XWMHints wm = {.flags = InputHint, .input = 1};
|
|
XSizeHints size = {
|
|
.flags = PSize | PResizeInc | PBaseSize,
|
|
.height = xw.h,
|
|
.width = xw.w,
|
|
.height_inc = xw.ch,
|
|
.width_inc = xw.cw,
|
|
.base_height = 2*BORDER,
|
|
.base_width = 2*BORDER,
|
|
};
|
|
XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
|
|
}
|
|
|
|
XFontSet
|
|
xinitfont(char *fontstr)
|
|
{
|
|
XFontSet set;
|
|
char *def, **missing;
|
|
int n;
|
|
|
|
missing = NULL;
|
|
set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
|
|
if(missing) {
|
|
while(n--)
|
|
fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
|
|
XFreeStringList(missing);
|
|
}
|
|
return set;
|
|
}
|
|
|
|
void
|
|
xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing)
|
|
{
|
|
XFontStruct **xfonts;
|
|
char **font_names;
|
|
int i, n;
|
|
|
|
*ascent = *descent = *lbearing = *rbearing = 0;
|
|
n = XFontsOfFontSet(set, &xfonts, &font_names);
|
|
for(i = 0; i < n; i++) {
|
|
*ascent = MAX(*ascent, (*xfonts)->ascent);
|
|
*descent = MAX(*descent, (*xfonts)->descent);
|
|
*lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
|
|
*rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
|
|
xfonts++;
|
|
}
|
|
}
|
|
|
|
void
|
|
initfonts(char *fontstr, char *bfontstr)
|
|
{
|
|
if((dc.font.set = xinitfont(fontstr)) == NULL ||
|
|
(dc.bfont.set = xinitfont(bfontstr)) == NULL)
|
|
die("Can't load font %s\n", dc.font.set ? BOLDFONT : FONT);
|
|
xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
|
|
&dc.font.lbearing, &dc.font.rbearing);
|
|
xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
|
|
&dc.bfont.lbearing, &dc.bfont.rbearing);
|
|
}
|
|
|
|
void
|
|
xinit(void) {
|
|
XSetWindowAttributes attrs;
|
|
Cursor cursor;
|
|
|
|
if(!(xw.dpy = XOpenDisplay(NULL)))
|
|
die("Can't open display\n");
|
|
xw.scr = XDefaultScreen(xw.dpy);
|
|
|
|
/* font */
|
|
initfonts(FONT, BOLDFONT);
|
|
|
|
/* XXX: Assuming same size for bold font */
|
|
xw.cw = dc.font.rbearing - dc.font.lbearing;
|
|
xw.ch = dc.font.ascent + dc.font.descent;
|
|
|
|
/* colors */
|
|
xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
|
|
xloadcols();
|
|
|
|
/* window - default size */
|
|
xw.bufh = 24 * xw.ch;
|
|
xw.bufw = 80 * xw.cw;
|
|
xw.h = xw.bufh + 2*BORDER;
|
|
xw.w = xw.bufw + 2*BORDER;
|
|
|
|
attrs.background_pixel = dc.col[DefaultBG];
|
|
attrs.border_pixel = dc.col[DefaultBG];
|
|
attrs.bit_gravity = NorthWestGravity;
|
|
attrs.event_mask = FocusChangeMask | KeyPressMask
|
|
| ExposureMask | VisibilityChangeMask | StructureNotifyMask
|
|
| PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
|
|
attrs.colormap = xw.cmap;
|
|
|
|
xw.win = XCreateWindow(xw.dpy, XRootWindow(xw.dpy, xw.scr), 0, 0,
|
|
xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
|
|
XDefaultVisual(xw.dpy, xw.scr),
|
|
CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
|
|
| CWColormap,
|
|
&attrs);
|
|
xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dpy, xw.scr));
|
|
|
|
|
|
/* input methods */
|
|
xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
|
|
xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
|
|
| XIMStatusNothing, XNClientWindow, xw.win,
|
|
XNFocusWindow, xw.win, NULL);
|
|
/* gc */
|
|
dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
|
|
|
|
/* white cursor, black outline */
|
|
cursor = XCreateFontCursor(xw.dpy, XC_xterm);
|
|
XDefineCursor(xw.dpy, xw.win, cursor);
|
|
XRecolorCursor(xw.dpy, cursor,
|
|
&(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
|
|
&(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
|
|
|
|
XMapWindow(xw.dpy, xw.win);
|
|
xhints();
|
|
XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
|
|
XSync(xw.dpy, 0);
|
|
}
|
|
|
|
void
|
|
xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
|
|
unsigned long xfg, xbg;
|
|
int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
|
|
int i;
|
|
|
|
if(base.mode & ATTR_REVERSE)
|
|
xfg = dc.col[base.bg], xbg = dc.col[base.fg];
|
|
else
|
|
xfg = dc.col[base.fg], xbg = dc.col[base.bg];
|
|
|
|
XSetBackground(xw.dpy, dc.gc, xbg);
|
|
XSetForeground(xw.dpy, dc.gc, xfg);
|
|
|
|
if(base.mode & ATTR_GFX) {
|
|
for(i = 0; i < bytelen; i++) {
|
|
char c = gfx[(unsigned int)s[i] % 256];
|
|
if(c)
|
|
s[i] = c;
|
|
else if(s[i] > 0x5f)
|
|
s[i] -= 0x5f;
|
|
}
|
|
}
|
|
|
|
XmbDrawImageString(xw.dpy, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.set : dc.font.set,
|
|
dc.gc, winx, winy, s, bytelen);
|
|
|
|
if(base.mode & ATTR_UNDERLINE)
|
|
XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
|
|
}
|
|
|
|
void
|
|
xdrawcursor(void) {
|
|
static int oldx = 0;
|
|
static int oldy = 0;
|
|
int sl;
|
|
Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
|
|
|
|
LIMIT(oldx, 0, term.col-1);
|
|
LIMIT(oldy, 0, term.row-1);
|
|
|
|
if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
|
|
memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
|
|
|
|
/* remove the old cursor */
|
|
if(term.line[oldy][oldx].state & GLYPH_SET) {
|
|
sl = utf8size(term.line[oldy][oldx].c);
|
|
xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
|
|
} else
|
|
xclear(oldx, oldy, oldx, oldy);
|
|
|
|
/* draw the new one */
|
|
if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
|
|
sl = utf8size(g.c);
|
|
xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
|
|
oldx = term.c.x, oldy = term.c.y;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* basic drawing routines */
|
|
void
|
|
xdrawc(int x, int y, Glyph g) {
|
|
int sl = utf8size(g.c);
|
|
XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
|
|
XSetBackground(xw.dpy, dc.gc, dc.col[g.bg]);
|
|
XSetForeground(xw.dpy, dc.gc, dc.col[g.fg]);
|
|
XmbDrawImageString(xw.dpy, xw.buf, g.mode&ATTR_BOLD?dc.bfont.fs:dc.font.fs,
|
|
dc.gc, r.x, r.y+dc.font.ascent, g.c, sl);
|
|
}
|
|
|
|
void
|
|
draw(int dummy) {
|
|
int x, y;
|
|
|
|
xclear(0, 0, term.col-1, term.row-1);
|
|
for(y = 0; y < term.row; y++)
|
|
for(x = 0; x < term.col; x++)
|
|
if(term.line[y][x].state & GLYPH_SET)
|
|
xdrawc(x, y, term.line[y][x]);
|
|
|
|
xdrawcursor();
|
|
XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
|
|
XFlush(xw.dpy);
|
|
}
|
|
|
|
#else
|
|
/* optimized drawing routine */
|
|
void
|
|
draw(int redraw_all) {
|
|
int ic, ib, x, y, ox, sl;
|
|
Glyph base, new;
|
|
char buf[DRAW_BUF_SIZ];
|
|
|
|
if(!(xw.state & WIN_VISIBLE))
|
|
return;
|
|
|
|
xclear(0, 0, term.col-1, term.row-1);
|
|
for(y = 0; y < term.row; y++) {
|
|
base = term.line[y][0];
|
|
ic = ib = ox = 0;
|
|
for(x = 0; x < term.col; x++) {
|
|
new = term.line[y][x];
|
|
if(sel.bx!=-1 && *(new.c) && selected(x, y))
|
|
new.mode ^= ATTR_REVERSE;
|
|
if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
|
|
ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
|
|
xdraws(buf, base, ox, y, ic, ib);
|
|
ic = ib = 0;
|
|
}
|
|
if(new.state & GLYPH_SET) {
|
|
if(ib == 0) {
|
|
ox = x;
|
|
base = new;
|
|
}
|
|
sl = utf8size(new.c);
|
|
memcpy(buf+ib, new.c, sl);
|
|
ib += sl;
|
|
++ic;
|
|
}
|
|
}
|
|
if(ib > 0)
|
|
xdraws(buf, base, ox, y, ic, ib);
|
|
}
|
|
xdrawcursor();
|
|
XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
|
|
}
|
|
|
|
#endif
|
|
|
|
void
|
|
expose(XEvent *ev) {
|
|
XExposeEvent *e = &ev->xexpose;
|
|
if(xw.state & WIN_REDRAW) {
|
|
if(!e->count) {
|
|
xw.state &= ~WIN_REDRAW;
|
|
draw(SCREEN_REDRAW);
|
|
}
|
|
} else
|
|
XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, e->x-BORDER, e->y-BORDER,
|
|
e->width, e->height, e->x, e->y);
|
|
}
|
|
|
|
void
|
|
visibility(XEvent *ev) {
|
|
XVisibilityEvent *e = &ev->xvisibility;
|
|
if(e->state == VisibilityFullyObscured)
|
|
xw.state &= ~WIN_VISIBLE;
|
|
else if(!(xw.state & WIN_VISIBLE))
|
|
/* need a full redraw for next Expose, not just a buf copy */
|
|
xw.state |= WIN_VISIBLE | WIN_REDRAW;
|
|
}
|
|
|
|
void
|
|
unmap(XEvent *ev) {
|
|
xw.state &= ~WIN_VISIBLE;
|
|
}
|
|
|
|
void
|
|
xseturgency(int add) {
|
|
XWMHints *h = XGetWMHints(xw.dpy, xw.win);
|
|
h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
|
|
XSetWMHints(xw.dpy, xw.win, h);
|
|
XFree(h);
|
|
}
|
|
|
|
void
|
|
focus(XEvent *ev) {
|
|
if(ev->type == FocusIn) {
|
|
xw.state |= WIN_FOCUSED;
|
|
xseturgency(0);
|
|
} else
|
|
xw.state &= ~WIN_FOCUSED;
|
|
draw(SCREEN_UPDATE);
|
|
}
|
|
|
|
char*
|
|
kmap(KeySym k) {
|
|
int i;
|
|
for(i = 0; i < LEN(key); i++)
|
|
if(key[i].k == k)
|
|
return (char*)key[i].s;
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
kpress(XEvent *ev) {
|
|
XKeyEvent *e = &ev->xkey;
|
|
KeySym ksym;
|
|
char buf[32];
|
|
char *customkey;
|
|
int len;
|
|
int meta;
|
|
int shift;
|
|
Status status;
|
|
|
|
meta = e->state & Mod1Mask;
|
|
shift = e->state & ShiftMask;
|
|
len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
|
|
|
|
/* 1. custom keys from config.h */
|
|
if((customkey = kmap(ksym)))
|
|
ttywrite(customkey, strlen(customkey));
|
|
/* 2. hardcoded (overrides X lookup) */
|
|
else
|
|
switch(ksym) {
|
|
case XK_Up:
|
|
case XK_Down:
|
|
case XK_Left:
|
|
case XK_Right:
|
|
sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
|
|
ttywrite(buf, 3);
|
|
break;
|
|
case XK_Insert:
|
|
if(shift)
|
|
selpaste();
|
|
break;
|
|
case XK_Return:
|
|
if(IS_SET(MODE_CRLF))
|
|
ttywrite("\r\n", 2);
|
|
else
|
|
ttywrite("\r", 1);
|
|
break;
|
|
/* 3. X lookup */
|
|
default:
|
|
if(len > 0) {
|
|
if(meta && len == 1)
|
|
ttywrite("\033", 1);
|
|
ttywrite(buf, len);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
resize(XEvent *e) {
|
|
int col, row;
|
|
|
|
if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
|
|
return;
|
|
|
|
xw.w = e->xconfigure.width;
|
|
xw.h = e->xconfigure.height;
|
|
col = (xw.w - 2*BORDER) / xw.cw;
|
|
row = (xw.h - 2*BORDER) / xw.ch;
|
|
if(col == term.col && row == term.row)
|
|
return;
|
|
if(tresize(col, row))
|
|
draw(SCREEN_REDRAW);
|
|
ttyresize(col, row);
|
|
xresize(col, row);
|
|
}
|
|
|
|
void
|
|
run(void) {
|
|
XEvent ev;
|
|
fd_set rfd;
|
|
int xfd = XConnectionNumber(xw.dpy);
|
|
|
|
for(;;) {
|
|
FD_ZERO(&rfd);
|
|
FD_SET(cmdfd, &rfd);
|
|
FD_SET(xfd, &rfd);
|
|
if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
|
|
if(errno == EINTR)
|
|
continue;
|
|
die("select failed: %s\n", SERRNO);
|
|
}
|
|
if(FD_ISSET(cmdfd, &rfd)) {
|
|
ttyread();
|
|
draw(SCREEN_UPDATE);
|
|
}
|
|
while(XPending(xw.dpy)) {
|
|
XNextEvent(xw.dpy, &ev);
|
|
if (XFilterEvent(&ev, xw.win))
|
|
continue;
|
|
if(handler[ev.type])
|
|
(handler[ev.type])(&ev);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[]) {
|
|
int i;
|
|
|
|
for(i = 1; i < argc; i++) {
|
|
switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
|
|
case 't':
|
|
if(++i < argc) opt_title = argv[i];
|
|
break;
|
|
case 'c':
|
|
if(++i < argc) opt_class = argv[i];
|
|
break;
|
|
case 'e':
|
|
if(++i < argc) opt_cmd = &argv[i];
|
|
break;
|
|
case 'v':
|
|
default:
|
|
die(USAGE);
|
|
}
|
|
/* -e eats every remaining arguments */
|
|
if(opt_cmd)
|
|
break;
|
|
}
|
|
setlocale(LC_CTYPE, "");
|
|
tnew(80, 24);
|
|
ttynew();
|
|
xinit();
|
|
selinit();
|
|
run();
|
|
return 0;
|
|
}
|