X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=st.c;h=3b7eb787029f2ce691771a86b1caa40f45ebbd1e;hb=bcb5d3adbe57ead05a829e5144c2ba1dc465865f;hp=6a9017613bf5c69df4e306d0f844e6a288d23569;hpb=160bda1b60148ce8f7d3b001ada2b12f1da9e152;p=st.git diff --git a/st.c b/st.c index 6a90176..21cba9e 100644 --- a/st.c +++ b/st.c @@ -1,552 +1,1149 @@ -/* See LICENSE for licence details. */ -#define _XOPEN_SOURCE 600 +/* See LICENSE for license details. */ #include #include #include #include #include +#include #include #include #include #include #include +#include #include #include #include +#include #include #include +#include +#include #include -#include -#include -#include +#include +#include + +#include "st.h" +#include "win.h" #if defined(__linux) #include -#elif defined(__OpenBSD__) || defined(__NetBSD__) +#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__) #include #elif defined(__FreeBSD__) || defined(__DragonFly__) #include #endif /* Arbitrary sizes */ -#define ESC_TITLE_SIZ 256 -#define ESC_BUF_SIZ 256 +#define UTF_INVALID 0xFFFD +#define ESC_BUF_SIZ (128*UTF_SIZ) #define ESC_ARG_SIZ 16 -#define DRAW_BUF_SIZ 1024 - -#define SERRNO strerror(errno) -#define MIN(a, b) ((a) < (b) ? (a) : (b)) -#define MAX(a, b) ((a) < (b) ? (b) : (a)) -#define LEN(a) (sizeof(a) / sizeof(a[0])) -#define DEFAULT(a, b) (a) = (a) ? (a) : (b) -#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b)) -#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x) -#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg) -#define IS_SET(flag) (term.mode & (flag)) - -/* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */ -enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 }; -enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, - CURSOR_SAVE, CURSOR_LOAD }; -enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 }; -enum { GLYPH_SET=1, GLYPH_DIRTY=2 }; -enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 }; -enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 }; -enum { SCREEN_UPDATE, SCREEN_REDRAW }; +#define STR_BUF_SIZ ESC_BUF_SIZ +#define STR_ARG_SIZ ESC_ARG_SIZ + +/* macros */ +#define NUMMAXLEN(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) +#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177') +#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) +#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) +#define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL) + +/* constants */ +#define ISO14755CMD "dmenu -w \"$WINDOWID\" -p codepoint: ] [;]] ] */ +/* ESC '[' [[ [] [;]] []] */ typedef struct { char buf[ESC_BUF_SIZ]; /* raw string */ - int len; /* raw string length */ + int len; /* raw string length */ char priv; int arg[ESC_ARG_SIZ]; - int narg; /* nb of args */ - char mode; + int narg; /* nb of args */ + char mode[2]; } CSIEscape; -/* Internal representation of the screen */ -typedef struct { - int row; /* nb row */ - int col; /* nb col */ - Line* line; /* screen */ - Line* alt; /* alternate screen */ - TCursor c; /* cursor */ - int top; /* top scroll limit */ - int bot; /* bottom scroll limit */ - int mode; /* terminal mode flags */ - int esc; /* escape state flags */ - char title[ESC_TITLE_SIZ]; - int titlelen; -} Term; - -/* Purely graphic info */ -typedef struct { - Display* dis; - Window win; - Pixmap buf; - int scr; - int w; /* window width */ - int h; /* window height */ - int bufw; /* pixmap width */ - int bufh; /* pixmap height */ - int ch; /* char height */ - int cw; /* char width */ - int hasfocus; -} XWindow; - -typedef struct { - KeySym k; - char s[ESC_BUF_SIZ]; -} Key; - -/* Drawing Context */ +/* STR Escape sequence structs */ +/* ESC type [[ [] [;]] ] ESC '\' */ typedef struct { - unsigned long col[256]; - XFontStruct* font; - XFontStruct* bfont; - GC gc; -} DC; + char type; /* ESC type ... */ + char buf[STR_BUF_SIZ]; /* raw string */ + int len; /* raw string length */ + char *args[STR_ARG_SIZ]; + int narg; /* nb of args */ +} STREscape; -#include "config.h" -static void die(const char *errstr, ...); -static void draw(int); -static void execsh(void); +static void execsh(char **); +static void stty(char **); static void sigchld(int); -static void run(void); static void csidump(void); static void csihandle(void); static void csiparse(void); static void csireset(void); - +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); static void tmoveto(int, int); -static void tnew(int, int); -static void tnewline(void); -static void tputtab(void); -static void tputc(char); -static void tputs(char*, int); +static void tmoveato(int, int); +static void tnewline(int); +static void tputtab(int); +static void tputc(Rune); static void treset(void); -static void tresize(int, int); -static void tscrollup(int); -static void tscrolldown(int); -static void tsetattr(int*, int); -static void tsetchar(char); +static void tscrollup(int, int); +static void tscrolldown(int, int); +static void tsetattr(int *, int); +static void tsetchar(Rune, Glyph *, int, int); +static void tsetdirt(int, int); static void tsetscroll(int, int); static void tswapscreen(void); +static void tsetmode(int, int, int *, int); +static int twrite(const char *, int, int); +static void tfulldirt(void); +static void tcontrolcode(uchar ); +static void tdectest(char ); +static void tdefutf8(char); +static int32_t tdefcolor(int *, int *, int); +static void tdeftran(char); +static void tstrsequence(uchar); -static void ttynew(void); -static void ttyread(void); -static void ttyresize(int, int); -static void ttywrite(const char *, size_t); - -static void xdraws(char *, Glyph, int, int, int); -static void xhints(void); -static void xclear(int, int, int, int); -static void xdrawcursor(void); -static void xinit(void); -static void xloadcols(void); -static void xseturgency(int); - -static void expose(XEvent *); -static char* kmap(KeySym); -static void kpress(XEvent *); -static void resize(XEvent *); -static void focus(XEvent *); -static void brelease(XEvent *e); -static void bpress(XEvent *e); -static void bmotion(XEvent *e); - - -static void (*handler[LASTEvent])(XEvent *) = { - [KeyPress] = kpress, - [Expose] = expose, - [ConfigureNotify] = resize, - [FocusIn] = focus, - [FocusOut] = focus, - [MotionNotify] = bmotion, - [ButtonPress] = bpress, - [ButtonRelease] = brelease, -}; +static void selscroll(int, int); +static void selsnap(int *, int *, int); + +static Rune utf8decodebyte(char, size_t *); +static char utf8encodebyte(Rune, size_t); +static char *utf8strchr(char *s, Rune u); +static size_t utf8validate(Rune *, size_t); + +static char *base64dec(const char *); + +static ssize_t xwrite(int, const char *, size_t); /* Globals */ -static DC dc; -static XWindow xw; -static Term term; -static CSIEscape escseq; -static int cmdfd; -static pid_t pid; - -/* selection */ -// TODO: use X11 clipboard -static int selmode = 0; -static int selbx = -1, selby; -static int selex, seley; -int sb[2], se[2]; -static const char *clipboard = NULL; - -static inline int selected(int x, int y) { - if ((seley==y && selby==y)) { - int bx = MIN(selbx, selex); - int ex = MAX(selbx, selex); - return (x>=bx && x<=ex); +Term term; +Selection sel; +int cmdfd; +pid_t pid; +int oldbutton = 3; /* button event on startup: 3 = release */ + +static CSIEscape csiescseq; +static STREscape strescseq; +static int iofd = 1; + +static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; +static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; +static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000}; +static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF}; + +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 (((y>sb[1] && y=sb[0] && (x<=se[0] || sb[1]!=se[1]))); + + return aux; } -static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) { - if(b) *b = e->xbutton.state, - *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1; - *x = e->xbutton.x/xw.cw; - *y = e->xbutton.y/xw.ch; - sb[0] = selbyxbutton.x/xw.cw; - seley = selby = e->xbutton.y/xw.ch; +void * +xrealloc(void *p, size_t len) +{ + if ((p = realloc(p, len)) == NULL) + die("Out of memory\n"); + + return p; } -static char *getseltext() { - char *str, *ptr; - int ls, x, y, sz; - if(selbx==-1) - return NULL; - sz = ((xw.w/xw.ch) * (se[1]-sb[1]+2)); - ptr = str = malloc (sz); - for(y = 0; y < term.row; y++) { - for(x = 0; x < term.col; x++) { - if(term.line[y][x].c && (ls=selected(x, y))) { - *ptr = term.line[y][x].c; - ptr++; - } - } - if (ls) { - *ptr = '\n'; - ptr++; - } +char * +xstrdup(char *s) +{ + if ((s = strdup(s)) == NULL) + die("Out of memory\n"); + + return s; +} + +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; } - *ptr = 0; - return str; + if (j < len) + return 0; + *u = udecoded; + utf8validate(u, len); + + return len; } -static void clipboard_copy(const char *str) { - free((void *)clipboard); - clipboard = str; +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; } -static void clipboard_paste() { - if(clipboard) - ttywrite(clipboard, strlen(clipboard)); +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; } -// TODO: doubleclick to select word -static void brelease(XEvent *e) { - int b; - selmode = 0; - getbuttoninfo(e, &b, &selex, &seley); - if(b==4) - tscrollup(1); - else - if(b==5) - tscrolldown(1); - else - if(selbx==selex && selby==seley) { - selbx = -1; - if(b==2) - clipboard_paste(); - } else { - if(b==1) - clipboard_copy(getseltext()); +char +utf8encodebyte(Rune u, size_t i) +{ + return utfbyte[i] | (u & ~utfmask[i]); +} + +char * +utf8strchr(char *s, Rune u) +{ + Rune r; + size_t i, j, len; + + len = strlen(s); + for (i = 0, j = 0; i < len; i += j) { + if (!(j = utf8decode(&s[i], &r, len - i))) + break; + if (r == u) + return &(s[i]); + } + + return NULL; +} + +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; +} + +static const char base64_digits[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +char +base64dec_getc(const char **src) +{ + while (**src && !isprint(**src)) (*src)++; + return *((*src)++); +} + +char * +base64dec(const char *src) +{ + size_t in_len = strlen(src); + char *result, *dst; + + 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)]; + + *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; } - draw(1); + *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; + + if (term.line[y][i - 1].mode & ATTR_WRAP) + return i; + + while (i > 0 && term.line[y][i - 1].u == ' ') + --i; + + return i; +} + +void +selstart(int col, int row, int snap) +{ + selclear(); + sel.mode = SEL_EMPTY; + sel.type = SEL_REGULAR; + sel.snap = snap; + sel.oe.x = sel.ob.x = col; + sel.oe.y = sel.ob.y = row; + selnormalize(); + + if (sel.snap != 0) + sel.mode = SEL_READY; + tsetdirt(sel.nb.y, sel.ne.y); +} + +void +selextend(int col, int row, int type) +{ + int oldey, oldex, oldsby, oldsey, oldtype; + oldey = sel.oe.y; + oldex = sel.oe.x; + oldsby = sel.nb.y; + oldsey = sel.ne.y; + oldtype = sel.type; + + sel.alt = IS_SET(MODE_ALTSCREEN); + sel.oe.x = col; + sel.oe.y = row; + selnormalize(); + sel.type = type; + + if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type) + tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey)); } -static void bmotion(XEvent *e) { - if (selmode) { - getbuttoninfo(e, NULL, &selex, &seley); - draw(1); +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; +} + +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); + + 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); } -#ifdef DEBUG void -tdump(void) { - int row, col; - Glyph c; +selsnap(int *x, int *y, int direction) +{ + int newx, newy, xt, yt; + int delim, prevdelim; + Glyph *gp, *prevgp; + + switch (sel.snap) { + case SNAP_WORD: + /* + * Snap around if the word wraps around at the end or + * beginning of a line. + */ + prevgp = &term.line[*y][*x]; + prevdelim = ISDELIM(prevgp->u); + for (;;) { + newx = *x + direction; + newy = *y; + if (!BETWEEN(newx, 0, term.col - 1)) { + newy += direction; + newx = (newx + term.col) % term.col; + if (!BETWEEN(newy, 0, term.row - 1)) + break; + + if (direction > 0) + yt = *y, xt = *x; + else + yt = newy, xt = newx; + if (!(term.line[yt][xt].mode & ATTR_WRAP)) + break; + } + + if (newx >= tlinelen(newy)) + break; - for(row = 0; row < term.row; row++) { - for(col = 0; col < term.col; col++) { - if(col == term.c.x && row == term.c.y) - putchar('#'); - else { - c = term.line[row][col]; - putchar(c.state & GLYPH_SET ? c.c : '.'); + gp = &term.line[newy][newx]; + delim = ISDELIM(gp->u); + if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim + || (delim && gp->u != prevgp->u))) + break; + + *x = newx; + *y = newy; + prevgp = gp; + prevdelim = delim; + } + break; + case SNAP_LINE: + /* + * Snap around if the the previous line or the current one + * has set ATTR_WRAP at its end. Then the whole next or + * previous line will be selected. + */ + *x = (direction < 0) ? 0 : term.col - 1; + if (direction < 0) { + for (; *y > 0; *y += direction) { + if (!(term.line[*y-1][term.col-1].mode + & ATTR_WRAP)) { + break; + } + } + } else if (direction > 0) { + for (; *y < term.row-1; *y += direction) { + if (!(term.line[*y][term.col-1].mode + & ATTR_WRAP)) { + break; + } } } - putchar('\n'); + break; } } -#endif + +char * +getsel(void) +{ + char *str, *ptr; + int y, bufsize, lastx, linelen; + Glyph *gp, *last; + + if (sel.ob.x == -1) + return NULL; + + bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ; + ptr = str = xmalloc(bufsize); + + /* append every set & selected glyph to the selection */ + for (y = sel.nb.y; y <= sel.ne.y; y++) { + if ((linelen = tlinelen(y)) == 0) { + *ptr++ = '\n'; + continue; + } + + if (sel.type == SEL_RECTANGULAR) { + gp = &term.line[y][sel.nb.x]; + lastx = sel.ne.x; + } else { + gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0]; + lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1; + } + last = &term.line[y][MIN(lastx, linelen-1)]; + while (last >= gp && last->u == ' ') + --last; + + for ( ; gp <= last; ++gp) { + if (gp->mode & ATTR_WDUMMY) + continue; + + ptr += utf8encode(gp->u, ptr); + } + + /* + * Copy and pasting of line endings is inconsistent + * in the inconsistent terminal and GUI world. + * The best solution seems like to produce '\n' when + * something is copied from st and convert '\n' to + * '\r', when something to be pasted is received by + * st. + * FIXME: Fix the computer world. + */ + if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP)) + *ptr++ = '\n'; + } + *ptr = 0; + return str; +} + +void +selclear(void) +{ + if (sel.ob.x == -1) + return; + sel.mode = SEL_IDLE; + sel.ob.x = -1; + tsetdirt(sel.nb.y, sel.ne.y); +} void -die(const char *errstr, ...) { +die(const char *errstr, ...) +{ va_list ap; va_start(ap, errstr); vfprintf(stderr, errstr, ap); va_end(ap); - exit(EXIT_FAILURE); + exit(1); } void -execsh(void) { - char *args[3] = {getenv("SHELL"), "-i", NULL}; - DEFAULT(args[0], SHELL); /* if getenv() failed */ - putenv("TERM=" TNAME); - execvp(args[0], args); -} +execsh(char **args) +{ + char *sh, *prog; + const struct passwd *pw; + + errno = 0; + if ((pw = getpwuid(getuid())) == NULL) { + if (errno) + die("getpwuid:%s\n", strerror(errno)); + else + die("who are you?\n"); + } -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)); + if ((sh = getenv("SHELL")) == NULL) + sh = (pw->pw_shell[0]) ? pw->pw_shell : shell; + + if (args) + prog = args[0]; + else if (utmp) + prog = utmp; else - exit(EXIT_FAILURE); + prog = sh; + DEFAULT(args, ((char *[]) {prog, NULL})); + + unsetenv("COLUMNS"); + unsetenv("LINES"); + unsetenv("TERMCAP"); + setenv("LOGNAME", pw->pw_name, 1); + setenv("USER", pw->pw_name, 1); + setenv("SHELL", sh, 1); + setenv("HOME", pw->pw_dir, 1); + setenv("TERM", termname, 1); + + signal(SIGCHLD, SIG_DFL); + signal(SIGHUP, SIG_DFL); + signal(SIGINT, SIG_DFL); + signal(SIGQUIT, SIG_DFL); + signal(SIGTERM, SIG_DFL); + signal(SIGALRM, SIG_DFL); + + execvp(prog, args); + _exit(1); +} + +void +sigchld(int a) +{ + int stat; + pid_t p; + + if ((p = waitpid(pid, &stat, WNOHANG)) < 0) + die("Waiting for pid %hd failed: %s\n", pid, strerror(errno)); + + if (pid != p) + return; + + if (!WIFEXITED(stat) || WEXITSTATUS(stat)) + die("child finished with error '%d'\n", stat); + exit(0); +} + + +void +stty(char **args) +{ + char cmd[_POSIX_ARG_MAX], **p, *q, *s; + size_t n, siz; + + if ((n = strlen(stty_args)) > sizeof(cmd)-1) + die("incorrect stty parameters\n"); + memcpy(cmd, stty_args, n); + q = cmd + n; + siz = sizeof(cmd) - n; + for (p = args; p && (s = *p); ++p) { + if ((n = strlen(s)) > siz-1) + die("stty parameter length too long\n"); + *q++ = ' '; + memcpy(q, s, n); + q += n; + siz -= n + 1; + } + *q = '\0'; + if (system(cmd) != 0) + perror("Couldn't call stty"); } void -ttynew(void) { +ttynew(char *line, char *out, char **args) +{ int m, s; - + + if (out) { + term.mode |= MODE_PRINT; + iofd = (!strcmp(out, "-")) ? + 1 : open(out, O_WRONLY | O_CREAT, 0666); + if (iofd < 0) { + fprintf(stderr, "Error opening %s:%s\n", + out, strerror(errno)); + } + } + + if (line) { + if ((cmdfd = open(line, O_RDWR)) < 0) + die("open line failed: %s\n", strerror(errno)); + dup2(cmdfd, 0); + stty(args); + return; + } + /* seems to work fine on linux, openbsd and freebsd */ - struct winsize w = {term.row, term.col, 0, 0}; - if(openpty(&m, &s, NULL, NULL, &w) < 0) - die("openpty failed: %s\n", SERRNO); + if (openpty(&m, &s, NULL, NULL, NULL) < 0) + die("openpty failed: %s\n", strerror(errno)); - switch(pid = fork()) { + switch (pid = fork()) { case -1: die("fork failed\n"); break; case 0: + close(iofd); 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); + dup2(s, 0); + dup2(s, 1); + dup2(s, 2); + if (ioctl(s, TIOCSCTTY, NULL) < 0) + die("ioctl TIOCSCTTY failed: %s\n", strerror(errno)); close(s); close(m); - execsh(); + execsh(args); break; default: close(s); cmdfd = m; signal(SIGCHLD, sigchld); + break; } } -void -dump(char c) { - static int col; - fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.'); - if(++col % 10 == 0) - fprintf(stderr, "\n"); +size_t +ttyread(void) +{ + static char buf[BUFSIZ]; + static int buflen = 0; + int written; + int ret; + + /* append read bytes to unprocessed bytes */ + if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0) + die("Couldn't read from shell: %s\n", strerror(errno)); + buflen += ret; + + written = twrite(buf, buflen, 0); + buflen -= written; + /* keep any uncomplete utf8 char for the next call */ + if (buflen > 0) + memmove(buf, buf + written, buflen); + + return ret; } void -ttyread(void) { - char buf[BUFSIZ] = {0}; - int ret; +ttywrite(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); - if((ret = read(cmdfd, buf, BUFSIZ)) < 0) - die("Couldn't read from shell: %s\n", SERRNO); - else - tputs(buf, ret); + /* 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 -ttywrite(const char *s, size_t n) { - if(write(cmdfd, s, n) == -1) - die("write error on tty: %s\n", SERRNO); +ttysend(char *s, size_t n) +{ + ttywrite(s, n); + if (IS_SET(MODE_ECHO)) + twrite(s, n, 1); } void -ttyresize(int x, int y) { +ttyresize(int tw, int th) +{ 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); + w.ws_xpixel = tw; + w.ws_ypixel = th; + if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0) + fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno)); +} + +int +tattrset(int attr) +{ + int i, j; + + for (i = 0; i < term.row-1; i++) { + for (j = 0; j < term.col-1; j++) { + if (term.line[i][j].mode & attr) + return 1; + } + } + + return 0; +} + +void +tsetdirt(int top, int bot) +{ + int i; + + LIMIT(top, 0, term.row-1); + LIMIT(bot, 0, term.row-1); + + for (i = top; i <= bot; i++) + term.dirty[i] = 1; +} + +void +tsetdirtattr(int attr) +{ + int i, j; + + for (i = 0; i < term.row-1; i++) { + for (j = 0; j < term.col-1; j++) { + if (term.line[i][j].mode & attr) { + tsetdirt(i, i); + break; + } + } + } } void -tcursor(int mode) { - static TCursor c; +tfulldirt(void) +{ + tsetdirt(0, term.row-1); +} - if(mode == CURSOR_SAVE) - c = term.c; - else if(mode == CURSOR_LOAD) - term.c = c, tmoveto(c.x, c.y); +void +tcursor(int mode) +{ + static TCursor c[2]; + int alt = IS_SET(MODE_ALTSCREEN); + + if (mode == CURSOR_SAVE) { + c[alt] = term.c; + } else if (mode == CURSOR_LOAD) { + term.c = c[alt]; + tmoveto(c[alt].x, c[alt].y); + } } void -treset(void) { +treset(void) +{ + uint i; + term.c = (TCursor){{ - .mode = ATTR_NULL, - .fg = DefaultFG, - .bg = DefaultBG + .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); + + memset(term.tabs, 0, term.col * sizeof(*term.tabs)); + for (i = tabspaces; i < term.col; i += tabspaces) + term.tabs[i] = 1; + term.top = 0; + term.bot = term.row - 1; + term.mode = MODE_WRAP|MODE_UTF8; + memset(term.trantbl, CS_USA, sizeof(term.trantbl)); + term.charset = 0; + + for (i = 0; i < 2; i++) { + tmoveto(0, 0); + tcursor(CURSOR_SAVE); + tclearregion(0, 0, term.col-1, term.row-1); + tswapscreen(); + } } void -tnew(int col, int row) { - /* 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 */ +tnew(int col, int row) +{ + term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } }; + tresize(col, row); + term.numlock = 1; + treset(); } void -tswapscreen(void) { - Line* tmp = term.line; +tswapscreen(void) +{ + Line *tmp = term.line; + term.line = term.alt; term.alt = tmp; term.mode ^= MODE_ALTSCREEN; + tfulldirt(); } void -tscrolldown (int n) { +tscrolldown(int orig, int n) +{ int i; Line temp; - - LIMIT(n, 0, term.bot-term.top+1); - for(i = 0; i < n; i++) - memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph)); - - for(i = term.bot; i >= term.top+n; i--) { + LIMIT(n, 0, term.bot-orig+1); + + tsetdirt(orig, term.bot-n); + tclearregion(0, term.bot-n+1, term.col-1, term.bot); + + for (i = term.bot; i >= orig+n; i--) { temp = term.line[i]; term.line[i] = term.line[i-n]; term.line[i-n] = temp; } + + selscroll(orig, n); } void -tscrollup (int n) { +tscrollup(int orig, int n) +{ int i; Line temp; - LIMIT(n, 0, term.bot-term.top+1); - - for(i = 0; i < n; i++) - memset(term.line[term.top+i], 0, term.col*sizeof(Glyph)); - - for(i = term.top; i <= term.bot-n; i++) { - temp = term.line[i]; - term.line[i] = term.line[i+n]; - term.line[i+n] = temp; - } -} -void -tnewline(void) { - int y = term.c.y + 1; - if(y > term.bot) - tscrollup(1), y = term.bot; - tmoveto(0, y); -} + LIMIT(n, 0, term.bot-orig+1); -void -csiparse(void) { - /* int noarg = 1; */ - char *p = escseq.buf; + tclearregion(0, orig, term.col-1, orig+n-1); + tsetdirt(orig+n, term.bot); - 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; - } + 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 -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; + selscroll(orig, -n); } void -tsetchar(char c) { - term.line[term.c.y][term.c.x] = term.c.attr; - term.line[term.c.y][term.c.x].c = c; - term.line[term.c.y][term.c.x].state |= GLYPH_SET; +selscroll(int orig, int n) +{ + if (sel.ob.x == -1) + return; + + if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) { + if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) { + selclear(); + return; + } + if (sel.type == SEL_RECTANGULAR) { + if (sel.ob.y < term.top) + sel.ob.y = term.top; + if (sel.oe.y > term.bot) + sel.oe.y = term.bot; + } else { + if (sel.ob.y < term.top) { + sel.ob.y = term.top; + sel.ob.x = 0; + } + if (sel.oe.y > term.bot) { + sel.oe.y = term.bot; + sel.oe.x = term.col; + } + } + selnormalize(); + } +} + +void +tnewline(int first_col) +{ + int y = term.c.y; + + if (y == term.bot) { + tscrollup(term.top, 1); + } else { + y++; + } + tmoveto(first_col ? 0 : term.c.x, y); +} + +void +csiparse(void) +{ + char *p = csiescseq.buf, *np; + long int v; + + csiescseq.narg = 0; + if (*p == '?') { + csiescseq.priv = 1; + p++; + } + + csiescseq.buf[csiescseq.len] = '\0'; + while (p < csiescseq.buf+csiescseq.len) { + np = NULL; + v = strtol(p, &np, 10); + if (np == p) + v = 0; + if (v == LONG_MAX || v == LONG_MIN) + v = -1; + csiescseq.arg[csiescseq.narg++] = v; + p = np; + if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ) + break; + p++; + } + csiescseq.mode[0] = *p++; + csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0'; +} + +/* for absolute user moves, when decom is set */ +void +tmoveato(int x, int y) +{ + tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0)); } void -tclearregion(int x1, int y1, int x2, int y2) { - int y, temp; +tmoveto(int x, int y) +{ + int miny, maxy; - if(x1 > x2) + if (term.c.state & CURSOR_ORIGIN) { + miny = term.top; + maxy = term.bot; + } else { + miny = 0; + maxy = term.row - 1; + } + term.c.state &= ~CURSOR_WRAPNEXT; + term.c.x = LIMIT(x, 0, term.col-1); + term.c.y = LIMIT(y, miny, maxy); +} + +void +tsetchar(Rune u, Glyph *attr, int x, int y) +{ + static char *vt100_0[62] = { /* 0x41 - 0x7e */ + "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */ + 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */ + 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */ + 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */ + "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */ + "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */ + "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */ + "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */ + }; + + /* + * The table is proudly stolen from rxvt. + */ + if (term.trantbl[term.charset] == CS_GRAPHIC0 && + BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41]) + utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ); + + if (term.line[y][x].mode & ATTR_WIDE) { + if (x+1 < term.col) { + term.line[y][x+1].u = ' '; + term.line[y][x+1].mode &= ~ATTR_WDUMMY; + } + } else if (term.line[y][x].mode & ATTR_WDUMMY) { + term.line[y][x-1].u = ' '; + term.line[y][x-1].mode &= ~ATTR_WIDE; + } + + term.dirty[y] = 1; + term.line[y][x] = *attr; + term.line[y][x].u = u; +} + +void +tclearregion(int x1, int y1, int x2, int y2) +{ + int x, y, temp; + Glyph *gp; + + if (x1 > x2) temp = x1, x1 = x2, x2 = temp; - if(y1 > y2) + if (y1 > y2) temp = y1, y1 = y2, y2 = temp; LIMIT(x1, 0, term.col-1); @@ -554,245 +1151,488 @@ tclearregion(int x1, int y1, int x2, int y2) { LIMIT(y1, 0, term.row-1); LIMIT(y2, 0, term.row-1); - for(y = y1; y <= y2; y++) - memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+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 src = term.c.x + n; - int dst = term.c.x; - int size = term.col - src; +tdeletechar(int n) +{ + int dst, src, size; + Glyph *line; - 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)); + 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 src = term.c.x; - int dst = src + n; - int size = term.col - dst; +tinsertblank(int n) +{ + int dst, src, size; + Glyph *line; - 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)); + 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) { - int i; - Line blank; - int bot = term.bot; - - if(term.c.y > term.bot) - bot = term.row - 1; - else if(term.c.y < term.top) - bot = term.top - 1; - if(term.c.y + n >= bot) { - tclearregion(0, term.c.y, term.col-1, bot); - return; - } - for(i = bot; i >= term.c.y+n; i--) { - /* swap deleted line <-> blanked line */ - blank = term.line[i]; - term.line[i] = term.line[i-n]; - term.line[i-n] = blank; - /* blank it */ - memset(blank, 0, term.col * sizeof(Glyph)); - } +tinsertblankline(int n) +{ + if (BETWEEN(term.c.y, term.top, term.bot)) + tscrolldown(term.c.y, n); } void -tdeleteline(int n) { - int i; - Line blank; - int bot = term.bot; - - if(term.c.y > term.bot) - bot = term.row - 1; - else if(term.c.y < term.top) - bot = term.top - 1; - if(term.c.y + n >= bot) { - tclearregion(0, term.c.y, term.col-1, bot); - return; - } - for(i = term.c.y; i <= bot-n; i++) { - /* swap deleted line <-> blanked line */ - blank = term.line[i]; - term.line[i] = term.line[i+n]; - term.line[i+n] = blank; - /* blank it */ - memset(blank, 0, term.col * sizeof(Glyph)); +tdeleteline(int n) +{ + if (BETWEEN(term.c.y, term.top, term.bot)) + tscrollup(term.c.y, n); +} + +int32_t +tdefcolor(int *attr, int *npar, int l) +{ + int32_t idx = -1; + uint r, g, b; + + switch (attr[*npar + 1]) { + case 2: /* direct color in RGB space */ + if (*npar + 4 >= l) { + fprintf(stderr, + "erresc(38): Incorrect number of parameters (%d)\n", + *npar); + break; + } + r = attr[*npar + 2]; + g = attr[*npar + 3]; + b = attr[*npar + 4]; + *npar += 4; + if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255)) + fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n", + r, g, b); + else + idx = TRUECOLOR(r, g, b); + break; + case 5: /* indexed color */ + if (*npar + 2 >= l) { + fprintf(stderr, + "erresc(38): Incorrect number of parameters (%d)\n", + *npar); + break; + } + *npar += 2; + if (!BETWEEN(attr[*npar], 0, 255)) + fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]); + else + idx = attr[*npar]; + break; + case 0: /* implemented defined (only foreground) */ + case 1: /* transparent */ + case 3: /* direct color in CMY space */ + case 4: /* direct color in CMYK space */ + default: + fprintf(stderr, + "erresc(38): gfx attr %d unknown\n", attr[*npar]); + break; } + + return idx; } void -tsetattr(int *attr, int l) { +tsetattr(int *attr, int l) +{ int i; + int32_t idx; - for(i = 0; i < l; i++) { - switch(attr[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; + term.c.attr.mode &= ~( + ATTR_BOLD | + ATTR_FAINT | + ATTR_ITALIC | + ATTR_UNDERLINE | + ATTR_BLINK | + ATTR_REVERSE | + ATTR_INVISIBLE | + ATTR_STRUCK ); + term.c.attr.fg = defaultfg; + term.c.attr.bg = defaultbg; break; case 1: - term.c.attr.mode |= ATTR_BOLD; + term.c.attr.mode |= ATTR_BOLD; + break; + case 2: + term.c.attr.mode |= ATTR_FAINT; break; - case 4: + case 3: + term.c.attr.mode |= ATTR_ITALIC; + break; + case 4: term.c.attr.mode |= ATTR_UNDERLINE; break; - case 7: - term.c.attr.mode |= ATTR_REVERSE; + 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 22: - term.c.attr.mode &= ~ATTR_BOLD; + case 8: + term.c.attr.mode |= ATTR_INVISIBLE; break; - case 24: + 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 27: - term.c.attr.mode &= ~ATTR_REVERSE; + 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 (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]); + if ((idx = tdefcolor(attr, &i, l)) >= 0) + term.c.attr.fg = idx; break; case 39: - term.c.attr.fg = DefaultFG; + 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]); + if ((idx = tdefcolor(attr, &i, l)) >= 0) + term.c.attr.bg = idx; break; case 49: - term.c.attr.bg = DefaultBG; + term.c.attr.bg = defaultbg; break; default: - if(BETWEEN(attr[i], 30, 37)) + if (BETWEEN(attr[i], 30, 37)) { term.c.attr.fg = attr[i] - 30; - else if(BETWEEN(attr[i], 40, 47)) + } else if (BETWEEN(attr[i], 40, 47)) { term.c.attr.bg = attr[i] - 40; - else if(BETWEEN(attr[i], 90, 97)) + } 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]); + } else if (BETWEEN(attr[i], 100, 107)) { + term.c.attr.bg = attr[i] - 100 + 8; + } else { + fprintf(stderr, + "erresc(default): gfx attr %d unknown\n", + attr[i]), csidump(); + } break; } } } void -tsetscroll(int t, int b) { +tsetscroll(int t, int b) +{ int temp; LIMIT(t, 0, term.row-1); LIMIT(b, 0, term.row-1); - if(t > b) { + if (t > b) { temp = t; t = b; b = temp; } term.top = t; - term.bot = b; + term.bot = b; +} + +void +tsetmode(int priv, int set, int *args, int narg) +{ + int *lim, mode; + int alt; + + for (lim = args + narg; args < lim; ++args) { + if (priv) { + switch (*args) { + case 1: /* DECCKM -- Cursor key */ + MODBIT(term.mode, set, MODE_APPCURSOR); + break; + case 5: /* DECSCNM -- Reverse video */ + mode = term.mode; + MODBIT(term.mode, set, MODE_REVERSE); + if (mode != term.mode) + redraw(); + 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 */ + MODBIT(term.mode, !set, MODE_HIDE); + break; + case 9: /* X10 mouse compatibility mode */ + xsetpointermotion(0); + MODBIT(term.mode, 0, MODE_MOUSE); + MODBIT(term.mode, set, MODE_MOUSEX10); + break; + case 1000: /* 1000: report button press */ + xsetpointermotion(0); + MODBIT(term.mode, 0, MODE_MOUSE); + MODBIT(term.mode, set, MODE_MOUSEBTN); + break; + case 1002: /* 1002: report motion on button press */ + xsetpointermotion(0); + MODBIT(term.mode, 0, MODE_MOUSE); + MODBIT(term.mode, set, MODE_MOUSEMOTION); + break; + case 1003: /* 1003: enable all mouse motions */ + xsetpointermotion(set); + MODBIT(term.mode, 0, MODE_MOUSE); + MODBIT(term.mode, set, MODE_MOUSEMANY); + break; + case 1004: /* 1004: send focus events to tty */ + MODBIT(term.mode, set, MODE_FOCUS); + break; + case 1006: /* 1006: extended reporting mode */ + MODBIT(term.mode, set, MODE_MOUSESGR); + break; + case 1034: + MODBIT(term.mode, set, MODE_8BIT); + break; + case 1049: /* swap screen & set/restore cursor as xterm */ + if (!allowaltscreen) + break; + tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); + /* FALLTHROUGH */ + case 47: /* swap screen */ + case 1047: + if (!allowaltscreen) + break; + alt = IS_SET(MODE_ALTSCREEN); + if (alt) { + tclearregion(0, 0, term.col-1, + term.row-1); + } + if (set ^ alt) /* set is always 1 or 0 */ + tswapscreen(); + if (*args != 1049) + break; + /* FALLTHROUGH */ + case 1048: + tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); + break; + case 2004: /* 2004: bracketed paste mode */ + MODBIT(term.mode, set, MODE_BRCKTPASTE); + break; + /* Not implemented mouse modes. See comments there. */ + case 1001: /* mouse highlight mode; can hang the + terminal by design when implemented. */ + case 1005: /* UTF-8 mouse mode; will confuse + applications not supporting UTF-8 + and luit. */ + case 1015: /* urxvt mangled mouse mode; incompatible + and can be mistaken for other control + codes. */ + default: + fprintf(stderr, + "erresc: unknown private set/reset mode %d\n", + *args); + break; + } + } else { + switch (*args) { + case 0: /* Error (IGNORED) */ + break; + case 2: /* KAM -- keyboard action */ + MODBIT(term.mode, 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) { - switch(escseq.mode) { +csihandle(void) +{ + char buf[40]; + int len; + + switch (csiescseq.mode[0]) { default: unknown: - printf("erresc: unknown csi "); + fprintf(stderr, "erresc: unknown csi "); csidump(); /* die(""); */ break; case '@': /* ICH -- Insert blank char */ - DEFAULT(escseq.arg[0], 1); - tinsertblank(escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tinsertblank(csiescseq.arg[0]); break; case 'A': /* CUU -- Cursor Up */ - case 'e': - DEFAULT(escseq.arg[0], 1); - tmoveto(term.c.x, term.c.y-escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x, term.c.y-csiescseq.arg[0]); break; case 'B': /* CUD -- Cursor Down */ - DEFAULT(escseq.arg[0], 1); - tmoveto(term.c.x, term.c.y+escseq.arg[0]); + case 'e': /* VPR --Cursor 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)); break; case 'C': /* CUF -- Cursor Forward */ - case 'a': - DEFAULT(escseq.arg[0], 1); - tmoveto(term.c.x+escseq.arg[0], term.c.y); + case 'a': /* HPR -- Cursor Forward */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x+csiescseq.arg[0], term.c.y); break; case 'D': /* CUB -- Cursor Backward */ - DEFAULT(escseq.arg[0], 1); - tmoveto(term.c.x-escseq.arg[0], term.c.y); + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x-csiescseq.arg[0], term.c.y); break; case 'E': /* CNL -- Cursor Down and first col */ - DEFAULT(escseq.arg[0], 1); - tmoveto(0, term.c.y+escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tmoveto(0, term.c.y+csiescseq.arg[0]); break; case 'F': /* CPL -- Cursor Up and first col */ - DEFAULT(escseq.arg[0], 1); - tmoveto(0, term.c.y-escseq.arg[0]); + 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 */ - case '`': /* XXX: HPA -- same? */ - DEFAULT(escseq.arg[0], 1); - tmoveto(escseq.arg[0]-1, term.c.y); + case '`': /* HPA */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(csiescseq.arg[0]-1, term.c.y); break; case 'H': /* CUP -- Move to */ - case 'f': /* XXX: HVP -- same? */ - DEFAULT(escseq.arg[0], 1); - DEFAULT(escseq.arg[1], 1); - tmoveto(escseq.arg[1]-1, escseq.arg[0]-1); + 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 tab stops */ + DEFAULT(csiescseq.arg[0], 1); + tputtab(csiescseq.arg[0]); break; - /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation tab stops */ case 'J': /* ED -- Clear screen */ - switch(escseq.arg[0]) { + selclear(); + switch (csiescseq.arg[0]) { case 0: /* below */ - tclearregion(term.c.x, term.c.y, term.col-1, term.row-1); + 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 */ - tclearregion(0, 0, term.c.x, term.c.y); + 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; - case 3: /* XXX: erase saved lines (xterm) */ default: goto unknown; } break; case 'K': /* EL -- Clear line */ - switch(escseq.arg[0]) { + switch (csiescseq.arg[0]) { case 0: /* right */ - tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); + 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); @@ -803,119 +1643,62 @@ csihandle(void) { } break; case 'S': /* SU -- Scroll line up */ - DEFAULT(escseq.arg[0], 1); - tscrollup(escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tscrollup(term.top, csiescseq.arg[0]); break; case 'T': /* SD -- Scroll line down */ - DEFAULT(escseq.arg[0], 1); - tscrolldown(escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tscrolldown(term.top, csiescseq.arg[0]); break; case 'L': /* IL -- Insert blank lines */ - DEFAULT(escseq.arg[0], 1); - tinsertblankline(escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tinsertblankline(csiescseq.arg[0]); break; case 'l': /* RM -- Reset Mode */ - if(escseq.priv) { - switch(escseq.arg[0]) { - case 1: - term.mode &= ~MODE_APPKEYPAD; - break; - case 7: - term.mode &= ~MODE_WRAP; - break; - case 12: /* att610 -- Stop blinking cursor (IGNORED) */ - 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; - } - } + tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg); break; case 'M': /* DL -- Delete lines */ - DEFAULT(escseq.arg[0], 1); - tdeleteline(escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tdeleteline(csiescseq.arg[0]); break; case 'X': /* ECH -- Erase char */ - DEFAULT(escseq.arg[0], 1); - tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y); + 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 char */ - DEFAULT(escseq.arg[0], 1); - tdeletechar(escseq.arg[0]); + DEFAULT(csiescseq.arg[0], 1); + tdeletechar(csiescseq.arg[0]); + break; + case 'Z': /* CBT -- Cursor Backward Tabulation tab stops */ + DEFAULT(csiescseq.arg[0], 1); + tputtab(-csiescseq.arg[0]); break; - /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation tab stops */ case 'd': /* VPA -- Move to */ - DEFAULT(escseq.arg[0], 1); - tmoveto(term.c.x, escseq.arg[0]-1); + DEFAULT(csiescseq.arg[0], 1); + tmoveato(term.c.x, csiescseq.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 7: - term.mode |= MODE_WRAP; - break; - case 12: /* att610 -- Start blinking cursor (IGNORED) */ - 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; - } - }; + tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg); break; case 'm': /* SGR -- Terminal attribute (color) */ - tsetattr(escseq.arg, escseq.narg); + tsetattr(csiescseq.arg, csiescseq.narg); + break; + case 'n': /* DSR – Device Status Report (cursor position) */ + if (csiescseq.arg[0] == 6) { + len = snprintf(buf, sizeof(buf),"\033[%i;%iR", + term.c.y+1, term.c.x+1); + ttywrite(buf, len); + } break; case 'r': /* DECSTBM -- Set Scrolling Region */ - if(escseq.priv) + if (csiescseq.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); + } 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) */ @@ -924,549 +1707,797 @@ csihandle(void) { 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) { +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'); + 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(&escseq, 0, sizeof(escseq)); +csireset(void) +{ + memset(&csiescseq, 0, sizeof(csiescseq)); } void -tputtab(void) { - int space = TAB - term.c.x % TAB; - tmoveto(term.c.x + space, term.c.y); -} +strhandle(void) +{ + char *p = NULL; + int j, narg, par; -void -tputc(char c) { - if(term.esc & ESC_START) { - if(term.esc & ESC_CSI) { - escseq.buf[escseq.len++] = c; - if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) { - term.esc = 0; - csiparse(), csihandle(); - } - } else if(term.esc & ESC_OSC) { - if(c == ';') { - term.titlelen = 0; - term.esc = ESC_START | ESC_TITLE; - } - } else if(term.esc & ESC_TITLE) { - if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) { - term.esc = 0; - term.title[term.titlelen] = '\0'; - XStoreName(xw.dis, xw.win, term.title); - } else { - term.title[term.titlelen++] = c; - } - } else if(term.esc & ESC_ALTCHARSET) { - switch(c) { - 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: - printf("esc unhandled charset: ESC ( %c\n", c); + term.esc &= ~(ESC_STR_END|ESC_STR); + strparse(); + par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0; + + switch (strescseq.type) { + case ']': /* OSC -- Operating System Command */ + switch (par) { + case 0: + case 1: + case 2: + if (narg > 1) + xsettitle(strescseq.args[1]); + return; + case 52: + if (narg > 2) { + char *dec; + + dec = base64dec(strescseq.args[2]); + if (dec) { + xsetsel(dec); + xclipcopy(); + } else { + fprintf(stderr, "erresc: invalid base64\n"); + } } - term.esc = 0; - } else { - switch(c) { - 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(1); - else - tmoveto(term.c.x, term.c.y+1); - term.esc = 0; - break; - case 'E': /* NEL -- Next line */ - tnewline(); - term.esc = 0; - break; - case 'M': /* RI -- Reverse index */ - if(term.c.y == term.top) - tscrolldown(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; + return; + case 4: /* color set */ + if (narg < 3) break; - default: - fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.'); - term.esc = 0; + p = strescseq.args[2]; + /* FALLTHROUGH */ + case 104: /* color reset, here p = NULL */ + j = (narg > 1) ? atoi(strescseq.args[1]) : -1; + if (xsetcolorname(j, p)) { + fprintf(stderr, "erresc: invalid color %s\n", p); + } else { + /* + * TODO if defaultbg color is changed, borders + * are dirty + */ + redraw(); } + return; } - } else { - switch(c) { - case '\t': - tputtab(); - break; - case '\b': - tmoveto(term.c.x-1, term.c.y); - break; - case '\r': - tmoveto(0, term.c.y); - break; - case '\n': - tnewline(); - break; - case '\a': - if(!xw.hasfocus) - xseturgency(1); - break; - case '\033': - csireset(); - term.esc = ESC_START; - break; - default: - if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT) - tnewline(); - tsetchar(c); - if(term.c.x+1 < term.col) - tmoveto(term.c.x+1, term.c.y); - else - term.c.state |= CURSOR_WRAPNEXT; - break; - } + break; + case 'k': /* old title set compatibility */ + xsettitle(strescseq.args[0]); + return; + case 'P': /* DCS -- Device Control String */ + term.mode |= ESC_DCS; + case '_': /* APC -- Application Program Command */ + case '^': /* PM -- Privacy Message */ + return; } -} -void -tputs(char *s, int len) { - for(; len > 0; len--) - tputc(*s++); + fprintf(stderr, "erresc: unknown str "); + strdump(); } void -tresize(int col, int row) { - int i; - int minrow = MIN(row, term.row); - int mincol = MIN(col, term.col); +strparse(void) +{ + int c; + char *p = strescseq.buf; - if(col < 1 || row < 1) + strescseq.narg = 0; + strescseq.buf[strescseq.len] = '\0'; + + if (*p == '\0') return; - /* free uneeded rows */ - for(i = row; i < term.row; i++) { - free(term.line[i]); - free(term.alt[i]); + while (strescseq.narg < STR_ARG_SIZ) { + strescseq.args[strescseq.narg++] = p; + while ((c = *p) != ';' && c != '\0') + ++p; + if (c == '\0') + return; + *p++ = '\0'; } +} - /* resize to new height */ - term.line = realloc(term.line, row * sizeof(Line)); - term.alt = realloc(term.alt, row * sizeof(Line)); +void +strdump(void) +{ + int i; + uint c; - /* 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)); - memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph)); - memset(term.alt[i] + mincol, 0, (col - mincol) * sizeof(Glyph)); + 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"); +} - /* 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); +void +strreset(void) +{ + memset(&strescseq, 0, sizeof(strescseq)); } void -xloadcols(void) { - int i, r, g, b; - XColor color; - Colormap cmap = DefaultColormap(xw.dis, xw.scr); - unsigned long white = WhitePixel(xw.dis, xw.scr); +sendbreak(const Arg *arg) +{ + if (tcsendbreak(cmdfd, 0)) + perror("Error sending break"); +} - for(i = 0; i < 16; i++) { - if (!XAllocNamedColor(xw.dis, 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; +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; } +} - /* 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.dis, cmap, &color)) { - dc.col[i] = white; - fprintf(stderr, "Could not allocate color %d\n", i); - } else - dc.col[i] = color.pixel; - i++; - } +void +iso14755(const Arg *arg) +{ + FILE *p; + char *us, *e, codepoint[9], uc[UTF_SIZ]; + unsigned long utf32; - for(r = 0; r < 24; r++, i++) { - color.red = color.green = color.blue = 0x0808 + 0x0a0a * r; - if (!XAllocColor(xw.dis, cmap, &color)) { - dc.col[i] = white; - fprintf(stderr, "Could not allocate color %d\n", i); - } else - dc.col[i] = color.pixel; - } + if (!(p = popen(ISO14755CMD, "r"))) + return; + + us = fgets(codepoint, sizeof(codepoint), p); + pclose(p); + + if (!us || *us == '\0' || *us == '-' || strlen(us) > 7) + return; + if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX || + (*e != '\n' && *e != '\0')) + return; + + ttysend(uc, utf8encode(utf32, uc)); } void -xclear(int x1, int y1, int x2, int y2) { - XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]); - XFillRectangle(xw.dis, xw.buf, dc.gc, - x1 * xw.cw, y1 * xw.ch, - (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch); +toggleprinter(const Arg *arg) +{ + term.mode ^= MODE_PRINT; } void -xhints(void) +printscreen(const Arg *arg) { - XClassHint 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.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class); -} - -void -xinit(void) { - if(!(xw.dis = XOpenDisplay(NULL))) - die("Can't open display\n"); - xw.scr = XDefaultScreen(xw.dis); - - /* font */ - if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT))) - die("Can't load font %s\n", dc.font ? BOLDFONT : FONT); - - /* XXX: Assuming same size for bold font */ - xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing; - xw.ch = dc.font->ascent + dc.font->descent; - - /* colors */ - xloadcols(); - - /* windows */ - xw.h = term.row * xw.ch + 2*BORDER; - xw.w = term.col * xw.cw + 2*BORDER; - xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0, - xw.w, xw.h, 0, - dc.col[DefaultBG], - dc.col[DefaultBG]); - xw.bufw = xw.w - 2*BORDER; - xw.bufh = xw.h - 2*BORDER; - xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr)); - xw.hasfocus = 1; - /* gc */ - dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL); - XMapWindow(xw.dis, xw.win); - xhints(); - XStoreName(xw.dis, xw.win, "st"); - XSync(xw.dis, 0); -} - -void -xdraws(char *s, Glyph base, int x, int y, int len) { - unsigned long xfg, xbg; - int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*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.dis, dc.gc, xbg); - XSetForeground(xw.dis, dc.gc, xfg); - - if(base.mode & ATTR_GFX) - for(i = 0; i < len; i++) - s[i] = gfx[(int)s[i]]; - - XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid); - XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len); - - if(base.mode & ATTR_UNDERLINE) - XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1); -} - -void -xdrawcursor(void) { - static int oldx = 0; - static int oldy = 0; - 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) - g.c = term.line[term.c.y][term.c.x].c; - - /* remove the old cursor */ - if(term.line[oldy][oldx].state & GLYPH_SET) - xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1); - else - xclear(oldx, oldy, oldx, oldy); - - /* draw the new one */ - if(!(term.c.state & CURSOR_HIDE) && xw.hasfocus) { - xdraws(&g.c, g, term.c.x, term.c.y, 1); - oldx = term.c.x, oldy = term.c.y; - } + tdump(); } -#ifdef DEBUG -/* basic drawing routines */ void -xdrawc(int x, int y, Glyph g) { - XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch }; - XSetBackground(xw.dis, dc.gc, dc.col[g.bg]); - XSetForeground(xw.dis, dc.gc, dc.col[g.fg]); - XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid); - XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1); +printsel(const Arg *arg) +{ + tdumpsel(); } void -draw(int dummy) { - int x, y; +tdumpsel(void) +{ + char *ptr; - 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.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER); - XFlush(xw.dis); -} - -#else -/* optimized drawing routine */ -void -draw(int redraw_all) { - int i, x, y, ox; - Glyph base, new; - char buf[DRAW_BUF_SIZ]; - - XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]); - XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh); - for(y = 0; y < term.row; y++) { - base = term.line[y][0]; - i = ox = 0; - for(x = 0; x < term.col; x++) { - new = term.line[y][x]; - if(selbx!=-1 && new.c && selected(x, y)) - new.mode ^= ATTR_REVERSE; - if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) || - i >= DRAW_BUF_SIZ)) { - xdraws(buf, base, ox, y, i); - i = 0; - } - if(new.state & GLYPH_SET) { - if(i == 0) { - ox = x; - base = new; - } - buf[i++] = new.c; - } - } - if(i > 0) - xdraws(buf, base, ox, y, i); + if ((ptr = getsel())) { + tprinter(ptr, strlen(ptr)); + free(ptr); } - xdrawcursor(); - XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER); - XFlush(xw.dis); } -#endif +void +tdumpline(int n) +{ + char buf[UTF_SIZ]; + Glyph *bp, *end; + + bp = &term.line[n][0]; + end = &bp[MIN(tlinelen(n), term.col) - 1]; + if (bp != end || bp->u != ' ') { + for ( ;bp <= end; ++bp) + tprinter(buf, utf8encode(bp->u, buf)); + } + tprinter("\n", 1); +} void -expose(XEvent *ev) { - draw(SCREEN_REDRAW); +tdump(void) +{ + int i; + + for (i = 0; i < term.row; ++i) + tdumpline(i); } void -xseturgency(int add) { - XWMHints *h = XGetWMHints(xw.dis, xw.win); - h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint); - XSetWMHints(xw.dis, xw.win, h); - XFree(h); +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 -focus(XEvent *ev) { - if((xw.hasfocus = ev->type == FocusIn)) - xseturgency(0); - draw(SCREEN_UPDATE); +tdefutf8(char ascii) +{ + if (ascii == 'G') + term.mode |= MODE_UTF8; + else if (ascii == '@') + term.mode &= ~MODE_UTF8; } -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 +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 -kpress(XEvent *ev) { - XKeyEvent *e = &ev->xkey; - KeySym ksym; - char buf[32]; - char *customkey; - int len; - int meta; - int shift; - - meta = e->state & Mod1Mask; - shift = e->state & ShiftMask; - len = XLookupString(e, buf, sizeof(buf), &ksym, NULL); - - if((customkey = kmap(ksym))) - ttywrite(customkey, strlen(customkey)); - else if(len > 0) { - buf[sizeof(buf)-1] = '\0'; - if(meta && len == 1) - ttywrite("\033", 1); - ttywrite(buf, len); - } 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) - draw(1), puts("draw!")/* XXX: paste X clipboard */; - break; - default: - fprintf(stderr, "errkey: %d\n", (int)ksym); - break; +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 -resize(XEvent *e) { - int col, row; - - if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h) +tstrsequence(uchar c) +{ + strreset(); + + switch (c) { + case 0x90: /* DCS -- Device Control String */ + c = 'P'; + term.esc |= ESC_DCS; + break; + case 0x9f: /* APC -- Application Program Command */ + c = '_'; + break; + case 0x9e: /* PM -- Privacy Message */ + c = '^'; + break; + case 0x9d: /* OSC -- Operating System Command */ + c = ']'; + break; + } + strescseq.type = c; + term.esc |= ESC_STR; +} + +void +tcontrolcode(uchar ascii) +{ + switch (ascii) { + case '\t': /* HT */ + tputtab(1); return; - - xw.w = e->xconfigure.width; - xw.h = e->xconfigure.height; - xw.bufw = xw.w - 2*BORDER; - xw.bufh = xw.h - 2*BORDER; - col = xw.bufw / xw.cw; - row = xw.bufh / xw.ch; - tresize(col, row); - ttyresize(col, row); - XFreePixmap(xw.dis, xw.buf); - xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr)); - draw(SCREEN_REDRAW); + case '\b': /* BS */ + tmoveto(term.c.x-1, term.c.y); + return; + case '\r': /* CR */ + tmoveto(0, term.c.y); + return; + case '\f': /* LF */ + case '\v': /* VT */ + case '\n': /* LF */ + /* go to first col if the mode is set */ + tnewline(IS_SET(MODE_CRLF)); + return; + case '\a': /* BEL */ + if (term.esc & ESC_STR_END) { + /* backwards compatibility to xterm */ + strhandle(); + } else { + xbell(); + } + break; + case '\033': /* ESC */ + csireset(); + term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST); + term.esc |= ESC_START; + return; + case '\016': /* SO (LS1 -- Locking shift 1) */ + case '\017': /* SI (LS0 -- Locking shift 0) */ + term.charset = 1 - (ascii - '\016'); + return; + case '\032': /* SUB */ + tsetchar('?', &term.c.attr, term.c.x, term.c.y); + case '\030': /* CAN */ + csireset(); + break; + case '\005': /* ENQ (IGNORED) */ + case '\000': /* NUL (IGNORED) */ + case '\021': /* XON (IGNORED) */ + case '\023': /* XOFF (IGNORED) */ + case 0177: /* DEL (IGNORED) */ + return; + case 0x80: /* TODO: PAD */ + case 0x81: /* TODO: HOP */ + case 0x82: /* TODO: BPH */ + case 0x83: /* TODO: NBH */ + case 0x84: /* TODO: IND */ + break; + case 0x85: /* NEL -- Next line */ + tnewline(1); /* always go to first col */ + break; + case 0x86: /* TODO: SSA */ + case 0x87: /* TODO: ESA */ + break; + case 0x88: /* HTS -- Horizontal tab stop */ + term.tabs[term.c.x] = 1; + break; + case 0x89: /* TODO: HTJ */ + case 0x8a: /* TODO: VTS */ + case 0x8b: /* TODO: PLD */ + case 0x8c: /* TODO: PLU */ + case 0x8d: /* TODO: RI */ + case 0x8e: /* TODO: SS2 */ + case 0x8f: /* TODO: SS3 */ + case 0x91: /* TODO: PU1 */ + case 0x92: /* TODO: PU2 */ + case 0x93: /* TODO: STS */ + case 0x94: /* TODO: CCH */ + case 0x95: /* TODO: MW */ + case 0x96: /* TODO: SPA */ + case 0x97: /* TODO: EPA */ + case 0x98: /* TODO: SOS */ + case 0x99: /* TODO: SGCI */ + break; + case 0x9a: /* DECID -- Identify Terminal */ + ttywrite(vtiden, strlen(vtiden)); + break; + case 0x9b: /* TODO: CSI */ + case 0x9c: /* TODO: ST */ + break; + case 0x90: /* DCS -- Device Control String */ + case 0x9d: /* OSC -- Operating System Command */ + case 0x9e: /* PM -- Privacy Message */ + case 0x9f: /* APC -- Application Program Command */ + tstrsequence(ascii); + return; + } + /* only CAN, SUB, \a and C1 chars interrupt a sequence */ + term.esc &= ~(ESC_STR_END|ESC_STR); +} + +/* + * returns 1 when the sequence is finished and it hasn't to read + * more characters for this sequence, otherwise 0 + */ +int +eschandle(uchar ascii) +{ + switch (ascii) { + case '[': + term.esc |= ESC_CSI; + return 0; + case '#': + term.esc |= ESC_TEST; + return 0; + case '%': + term.esc |= ESC_UTF8; + return 0; + case 'P': /* DCS -- Device Control String */ + case '_': /* APC -- Application Program Command */ + case '^': /* PM -- Privacy Message */ + case ']': /* OSC -- Operating System Command */ + case 'k': /* old title set compatibility */ + tstrsequence(ascii); + return 0; + case 'n': /* LS2 -- Locking shift 2 */ + case 'o': /* LS3 -- Locking shift 3 */ + term.charset = 2 + (ascii - 'n'); + break; + case '(': /* GZD4 -- set primary charset G0 */ + case ')': /* G1D4 -- set secondary charset G1 */ + case '*': /* G2D4 -- set tertiary charset G2 */ + case '+': /* G3D4 -- set quaternary charset G3 */ + term.icharset = ascii - '('; + term.esc |= ESC_ALTCHARSET; + return 0; + case 'D': /* IND -- Linefeed */ + if (term.c.y == term.bot) { + tscrollup(term.top, 1); + } else { + tmoveto(term.c.x, term.c.y+1); + } + break; + case 'E': /* NEL -- Next line */ + tnewline(1); /* always go to first col */ + break; + case 'H': /* HTS -- Horizontal tab stop */ + term.tabs[term.c.x] = 1; + break; + case 'M': /* RI -- Reverse index */ + if (term.c.y == term.top) { + tscrolldown(term.top, 1); + } else { + tmoveto(term.c.x, term.c.y-1); + } + break; + case 'Z': /* DECID -- Identify Terminal */ + ttywrite(vtiden, strlen(vtiden)); + break; + case 'c': /* RIS -- Reset to inital state */ + treset(); + resettitle(); + xloadcols(); + break; + case '=': /* DECPAM -- Application keypad */ + term.mode |= MODE_APPKEYPAD; + break; + case '>': /* DECPNM -- Normal keypad */ + term.mode &= ~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 -run(void) { - XEvent ev; - fd_set rfd; - int xfd = XConnectionNumber(xw.dis); - long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask; +tputc(Rune u) +{ + char c[UTF_SIZ]; + int control; + int width, len; + Glyph *gp; + + control = ISCONTROL(u); + if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) { + c[0] = u; + width = len = 1; + } else { + len = utf8encode(u, c); + if (!control && (width = wcwidth(u)) == -1) { + memcpy(c, "\357\277\275", 4); /* UTF_INVALID */ + width = 1; + } + } - XSelectInput(xw.dis, xw.win, mask); - XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */ + if (IS_SET(MODE_PRINT)) + tprinter(c, len); + + /* + * STR sequence must be checked before anything else + * because it uses all following characters until it + * receives a ESC, a SUB, a ST or any other C1 control + * character. + */ + if (term.esc & ESC_STR) { + if (u == '\a' || u == 030 || u == 032 || u == 033 || + ISCONTROLC1(u)) { + term.esc &= ~(ESC_START|ESC_STR|ESC_DCS); + if (IS_SET(MODE_SIXEL)) { + /* TODO: render sixel */; + term.mode &= ~MODE_SIXEL; + return; + } + term.esc |= ESC_STR_END; + goto check_control_code; + } - while(1) { - 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 (IS_SET(MODE_SIXEL)) { + /* TODO: implement sixel mode */ + return; } - if(FD_ISSET(cmdfd, &rfd)) { - ttyread(); - draw(SCREEN_UPDATE); + if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q') + term.mode |= MODE_SIXEL; + + if (strescseq.len+len >= sizeof(strescseq.buf)-1) { + /* + * Here is a bug in terminals. If the user never sends + * some code to stop the str or esc command, then st + * will stop responding. But this is better than + * silently failing with unknown characters. At least + * then users will report back. + * + * In the case users ever get fixed, here is the code: + */ + /* + * term.esc = 0; + * strhandle(); + */ + return; } - while(XPending(xw.dis)) { - XNextEvent(xw.dis, &ev); - if(handler[ev.type]) - (handler[ev.type])(&ev); + + memmove(&strescseq.buf[strescseq.len], c, len); + strescseq.len += len; + return; + } + +check_control_code: + /* + * Actions of control codes must be performed as soon they arrive + * because they can be embedded inside a control sequence, and + * they must not cause conflicts with sequences. + */ + if (control) { + tcontrolcode(u); + /* + * control codes are not shown ever + */ + return; + } else if (term.esc & ESC_START) { + if (term.esc & ESC_CSI) { + csiescseq.buf[csiescseq.len++] = u; + if (BETWEEN(u, 0x40, 0x7E) + || csiescseq.len >= \ + sizeof(csiescseq.buf)-1) { + term.esc = 0; + csiparse(); + csihandle(); + } + return; + } else if (term.esc & ESC_UTF8) { + tdefutf8(u); + } else if (term.esc & ESC_ALTCHARSET) { + tdeftran(u); + } else if (term.esc & ESC_TEST) { + tdectest(u); + } else { + if (!eschandle(u)) + return; + /* sequence already finished */ + } + term.esc = 0; + /* + * All characters which form part of a sequence are not + * printed + */ + return; + } + if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y)) + selclear(); + + gp = &term.line[term.c.y][term.c.x]; + if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) { + gp->mode |= ATTR_WRAP; + tnewline(1); + gp = &term.line[term.c.y][term.c.x]; + } + + if (IS_SET(MODE_INSERT) && term.c.x+width < term.col) + memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph)); + + if (term.c.x+width > term.col) { + tnewline(1); + gp = &term.line[term.c.y][term.c.x]; + } + + tsetchar(u, &term.c.attr, term.c.x, term.c.y); + + if (width == 2) { + gp->mode |= ATTR_WIDE; + if (term.c.x+1 < term.col) { + gp[1].u = '\0'; + gp[1].mode = ATTR_WDUMMY; } } + if (term.c.x+width < term.col) { + tmoveto(term.c.x+width, term.c.y); + } else { + term.c.state |= CURSOR_WRAPNEXT; + } } int -main(int argc, char *argv[]) { - if(argc == 2 && !strncmp("-v", argv[1], 3)) - die("st-" VERSION ", (c) 2010 st engineers\n"); - else if(argc != 1) - die("usage: st [-v]\n"); - setlocale(LC_CTYPE, ""); - tnew(80, 24); - ttynew(); - xinit(); - run(); - return 0; +twrite(const char *buf, int buflen, int show_ctrl) +{ + int charsize; + Rune u; + int n; + + for (n = 0; n < buflen; n += charsize) { + if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) { + /* process a complete utf8 char */ + charsize = utf8decode(buf + n, &u, buflen - n); + if (charsize == 0) + break; + } else { + u = buf[n] & 0xFF; + charsize = 1; + } + if (show_ctrl && ISCONTROL(u)) { + if (u & 0x80) { + u &= 0x7f; + tputc('^'); + tputc('['); + } else if (u != '\n' && u != '\r' && u != '\t') { + u ^= 0x40; + tputc('^'); + } + } + tputc(u); + } + return n; +} + +void +tresize(int col, int row) +{ + int i; + int minrow = MIN(row, term.row); + int mincol = MIN(col, term.col); + int *bp; + TCursor c; + + if (col < 1 || row < 1) { + fprintf(stderr, + "tresize: error resizing to %dx%d\n", col, row); + return; + } + + /* + * slide screen to keep cursor where we expect it - + * tscrollup would work here, but we can optimize to + * memmove because we're freeing the earlier lines + */ + for (i = 0; i <= term.c.y - row; i++) { + free(term.line[i]); + free(term.alt[i]); + } + /* ensure that both src and dst are not NULL */ + if (i > 0) { + memmove(term.line, term.line + i, row * sizeof(Line)); + memmove(term.alt, term.alt + i, row * sizeof(Line)); + } + for (i += row; i < term.row; i++) { + free(term.line[i]); + free(term.alt[i]); + } + + /* resize to new height */ + term.line = xrealloc(term.line, row * sizeof(Line)); + term.alt = xrealloc(term.alt, row * sizeof(Line)); + term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); + term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); + + /* resize each row to new width, zero-pad if needed */ + for (i = 0; i < minrow; i++) { + term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); + term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph)); + } + + /* allocate any new rows */ + for (/* i = minrow */; i < row; i++) { + term.line[i] = xmalloc(col * sizeof(Glyph)); + term.alt[i] = xmalloc(col * sizeof(Glyph)); + } + if (col > term.col) { + bp = term.tabs + term.col; + + memset(bp, 0, sizeof(*term.tabs) * (col - term.col)); + while (--bp > term.tabs && !*bp) + /* nothing */ ; + for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces) + *bp = 1; + } + /* update terminal size */ + term.col = col; + term.row = row; + /* reset scrolling region */ + tsetscroll(0, row-1); + /* make use of the LIMIT in tmoveto */ + tmoveto(term.c.x, term.c.y); + /* Clearing both screens (it makes dirty all lines) */ + c = term.c; + for (i = 0; i < 2; i++) { + if (mincol < col && 0 < minrow) { + tclearregion(mincol, 0, col - 1, minrow - 1); + } + if (0 < col && minrow < row) { + tclearregion(0, minrow, col - 1, row - 1); + } + tswapscreen(); + tcursor(CURSOR_LOAD); + } + term.c = c; +} + +void +resettitle(void) +{ + xsettitle(NULL); +} + +void +redraw(void) +{ + tfulldirt(); + draw(); +} + +void +numlock(const Arg *dummy) +{ + term.numlock ^= 1; }