Add MC for a single line

[st.git] / st.c

diff --git a/st.c b/st.c
index 37bec70..e60643c 100644 (file)
--- a/st.c
+++ b/st.c
@@ -134,6 +134,7 @@ enum term_mode {
        MODE_MOUSEX10    = 131072,
        MODE_MOUSEMANY   = 262144,
        MODE_BRCKTPASTE  = 524288,
+       MODE_PRINT       = 1048576,
        MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
                          |MODE_MOUSEMANY,
 };
@@ -355,6 +356,8 @@ static void strparse(void);
 static void strreset(void);
 
 static int tattrset(int);
+static void tprinter(char *s, size_t len);
+static void tdumpline(int);
 static void tclearregion(int, int, int, int);
 static void tcursor(int);
 static void tdeletechar(int);
@@ -441,6 +444,7 @@ static int isfullutf8(char *, int);
 static ssize_t xwrite(int, char *, size_t);
 static void *xmalloc(size_t);
 static void *xrealloc(void *, size_t);
+static char *xstrdup(char *s);
 
 static void (*handler[LASTEvent])(XEvent *) = {
        [KeyPress] = kpress,
@@ -468,7 +472,7 @@ static STREscape strescseq;
 static int cmdfd;
 static pid_t pid;
 static Selection sel;
-static int iofd = -1;
+static int iofd = STDOUT_FILENO;
 static char **opt_cmd = NULL;
 static char *opt_io = NULL;
 static char *opt_title = NULL;
@@ -529,6 +533,16 @@ xrealloc(void *p, size_t len) {
        return p;
 }
 
+char *
+xstrdup(char *s) {
+       char *p = strdup(s);
+
+       if (!p)
+               die("Out of memory\n");
+
+       return p;
+}
+
 int
 utf8decode(char *s, long *u) {
        uchar c;
@@ -1245,6 +1259,7 @@ ttynew(void) {
                cmdfd = m;
                signal(SIGCHLD, sigchld);
                if(opt_io) {
+                       term.mode |= MODE_PRINT;
                        iofd = (!strcmp(opt_io, "-")) ?
                                  STDOUT_FILENO :
                                  open(opt_io, O_WRONLY | O_CREAT, 0666);
@@ -1968,6 +1983,20 @@ csihandle(void) {
                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:
+               case 1:
+                       tdumpline(term.c.y);
+                       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(VT102ID, sizeof(VT102ID) - 1);
@@ -2241,6 +2270,31 @@ strreset(void) {
 }
 
 void
+tprinter(char *s, size_t len) {
+       if(iofd != -1 && xwrite(iofd, s, len) < 0) {
+               fprintf(stderr, "Error writing in %s:%s\n",
+                       opt_io, strerror(errno));
+               close(iofd);
+               iofd = -1;
+       }
+}
+
+void
+tdumpline(int n) {
+       Glyph *bp, *end;
+
+       bp = &term.line[n][0];
+       end = &bp[term.col-1];
+       while(end > bp && !strcmp(" ", end->c))
+               --end;
+       if(bp != end || strcmp(bp->c, " ")) {
+               for( ;bp <= end; ++bp)
+                       tprinter(bp->c, strlen(bp->c));
+       }
+       tprinter("\n", 1);
+}
+
+void
 tputtab(bool forward) {
        uint x = term.c.x;
 
@@ -2321,14 +2375,8 @@ tputc(char *c, int len) {
                width = wcwidth(u8char);
        }
 
-       if(iofd != -1) {
-               if(xwrite(iofd, c, len) < 0) {
-                       fprintf(stderr, "Error writing in %s:%s\n",
-                               opt_io, strerror(errno));
-                       close(iofd);
-                       iofd = -1;
-               }
-       }
+       if(IS_SET(MODE_PRINT))
+               tprinter(c, len);
 
        /*
         * STR sequences must be checked before anything else
@@ -3789,7 +3837,7 @@ main(int argc, char *argv[]) {
                if(argc > 1) {
                        opt_cmd = &argv[1];
                        if(argv[1] != NULL && opt_title == NULL) {
-                               titles = strdup(argv[1]);
+                               titles = xstrdup(argv[1]);
                                opt_title = basename(titles);
                        }
                }