Ignore NUL character as a padding character. Telnet may use this. Patch of

[st.git] / st.c

diff --git a/st.c b/st.c
index 5e8cf02..da895c6 100644 (file)
--- a/st.c
+++ b/st.c
@@ -296,6 +296,7 @@ static void xcopy(void);
 static void xdrawcursor(void);
 static void xinit(void);
 static void xloadcols(void);
+static void xresettitle(void);
 static void xseturgency(int);
 static void xsetsel(char*);
 static void xresize(int, int);
@@ -326,6 +327,9 @@ static int utf8encode(long *, char *);
 static int utf8size(char *);
 static int isfullutf8(char *, int);
 
+static void *xmalloc(size_t);
+static void *xrealloc(void *, size_t);
+
 static void (*handler[LASTEvent])(XEvent *) = {
        [KeyPress] = kpress,
        [ClientMessage] = cmessage,
@@ -352,13 +356,28 @@ static STREscape strescseq;
 static int cmdfd;
 static pid_t pid;
 static Selection sel;
-static FILE *fileio;
+static int iofd = -1;
 static char **opt_cmd  = NULL;
 static char *opt_io    = NULL;
 static char *opt_title = NULL;
 static char *opt_embed = NULL;
 static char *opt_class = NULL;
 
+void *
+xmalloc(size_t len) {
+       void *p = malloc(len);
+       if(!p)
+               die("Out of memory");
+       return p;
+}
+
+void *
+xrealloc(void *p, size_t len) {
+       if((p = realloc(p, len)) == NULL)
+               die("Out of memory");
+       return p;
+}
+
 int
 utf8decode(char *s, long *u) {
        uchar c;
@@ -565,7 +584,7 @@ selcopy(void) {
 
        else {
                bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
-               ptr = str = malloc(bufsize);
+               ptr = str = xmalloc(bufsize);
 
                /* append every set & selected glyph to the selection */
                for(y = 0; y < term.row; y++) {
@@ -755,6 +774,13 @@ execsh(void) {
        unsetenv("LINES");
        unsetenv("TERMCAP");
 
+       signal(SIGCHLD, SIG_DFL);
+       signal(SIGHUP, SIG_DFL);
+       signal(SIGINT, SIG_DFL);
+       signal(SIGQUIT, SIG_DFL);
+       signal(SIGTERM, SIG_DFL);
+       signal(SIGALRM, SIG_DFL);
+
        DEFAULT(envshell, SHELL);
        putenv("TERM="TNAME);
        args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
@@ -803,9 +829,9 @@ ttynew(void) {
                signal(SIGCHLD, sigchld);
                if(opt_io) {
                        if(!strcmp(opt_io, "-")) {
-                               fileio = stdout;
+                               iofd = STDOUT_FILENO;
                        } else {
-                               if(!(fileio = fopen(opt_io, "w"))) {
+                               if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
                                        fprintf(stderr, "Error opening %s:%s\n",
                                                opt_io, strerror(errno));
                                }
@@ -918,14 +944,14 @@ 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));
-       term.dirty = malloc(term.row * sizeof(*term.dirty));
-       term.tabs = malloc(term.col * sizeof(*term.tabs));
+       term.line = xmalloc(term.row * sizeof(Line));
+       term.alt  = xmalloc(term.row * sizeof(Line));
+       term.dirty = xmalloc(term.row * sizeof(*term.dirty));
+       term.tabs = xmalloc(term.col * sizeof(*term.tabs));
 
        for(row = 0; row < term.row; row++) {
-               term.line[row] = malloc(term.col * sizeof(Glyph));
-               term.alt [row] = malloc(term.col * sizeof(Glyph));
+               term.line[row] = xmalloc(term.col * sizeof(Glyph));
+               term.alt [row] = xmalloc(term.col * sizeof(Glyph));
                term.dirty[row] = 0;
        }
        memset(term.tabs, 0, term.col * sizeof(*term.tabs));
@@ -1153,6 +1179,7 @@ tsetattr(int *attr, int l) {
                case 7:
                        term.c.attr.mode |= ATTR_REVERSE;
                        break;
+               case 21:
                case 22:
                        term.c.attr.mode &= ~ATTR_BOLD;
                        break;
@@ -1204,7 +1231,7 @@ tsetattr(int *attr, int l) {
                        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;
+                               term.c.attr.bg = attr[i] - 100 + 8;
                        else
                                fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
                        break;
@@ -1581,10 +1608,8 @@ void
 tputc(char *c) {
        char ascii = *c;
 
-       if(fileio) {
-               putc(ascii, fileio);
-               fflush(fileio);
-       }
+       if(iofd != -1)
+               write(iofd, c, 1);
 
        if(term.esc & ESC_START) {
                if(term.esc & ESC_CSI) {
@@ -1667,6 +1692,7 @@ tputc(char *c) {
                        case 'c': /* RIS -- Reset to inital state */
                                treset();
                                term.esc = 0;
+                               xresettitle();
                                break;
                        case '=': /* DECPAM -- Application keypad */
                                term.mode |= MODE_APPKEYPAD;
@@ -1697,6 +1723,8 @@ tputc(char *c) {
                if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
                        sel.bx = -1;
                switch(ascii) {
+               case '\0': /* padding character, do nothing */
+                       break;
                case '\t':
                        tputtab(1);
                        break;
@@ -1761,16 +1789,16 @@ tresize(int col, int row) {
        }
 
        /* resize to new height */
-       term.line = realloc(term.line, row * sizeof(Line));
-       term.alt  = realloc(term.alt,  row * sizeof(Line));
-       term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
-       term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
+       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.dirty[i] = 1;
-               term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
-               term.alt[i]  = realloc(term.alt[i],  col * sizeof(Glyph));
+               term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+               term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
                for(x = mincol; x < col; x++) {
                        term.line[i][x].state = 0;
                        term.alt[i][x].state = 0;
@@ -2009,7 +2037,7 @@ xinit(void) {
 
        xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
 
-       XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
+       xresettitle();
        XMapWindow(xw.dpy, xw.win);
        xhints();
        XSync(xw.dpy, 0);
@@ -2106,6 +2134,11 @@ xdrawcursor(void) {
 }
 
 void
+xresettitle(void) {
+       XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
+}
+
+void
 redraw(void) {
        struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
        tfulldirt();