Support xterm Ms feature to set clipboard - st - Personal fork of st
 (HTM) git clone git://git.drkhsh.at/st.git
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       ---
 (DIR) commit e7ed326d2e914a57017c9f34459824614075519b
 (DIR) parent 20f713548de451b67db3306cf8cf7b2f38fee05c
 (HTM) Author: osandov@osandov.com <osandov@osandov.com>
       Date:   Sat, 18 Mar 2017 11:55:04 +0100
       
       Support xterm Ms feature to set clipboard
       
       This is used by, e.g., tmux.
       
       Diffstat:
         M st.c                                |      57 +++++++++++++++++++++++++++++++
         M st.info                             |       1 +
         M win.h                               |       1 +
         M x.c                                 |       1 -
       
       4 files changed, 59 insertions(+), 1 deletion(-)
       ---
 (DIR) diff --git a/st.c b/st.c
       @@ -198,6 +198,8 @@ 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);
        static void *xrealloc(void *, size_t);
        
       @@ -369,6 +371,48 @@ utf8validate(Rune *u, size_t 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(const char *src)
       +{
       +        size_t in_len = strlen(src);
       +        char *result, *dst;
       +
       +        if (in_len % 4)
       +                return NULL;
       +        result = dst = xmalloc(in_len / 4 * 3 + 1);
       +        while (*src) {
       +                int a = base64_digits[(unsigned char) *src++];
       +                int b = base64_digits[(unsigned char) *src++];
       +                int c = base64_digits[(unsigned char) *src++];
       +                int d = base64_digits[(unsigned char) *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;
       +        }
       +        *dst = '\0';
       +        return result;
       +}
       +
        void
        selinit(void)
        {
       @@ -1820,6 +1864,19 @@ strhandle(void)
                                if (narg > 1)
                                        xsettitle(strescseq.args[1]);
                                return;
       +                case 52:
       +                        if (narg > 2) {
       +                                char *dec;
       +
       +                                dec = base64dec(strescseq.args[2]);
       +                                if (dec) {
       +                                        xsetsel(dec, CurrentTime);
       +                                        clipcopy(NULL);
       +                                } else {
       +                                        fprintf(stderr, "erresc: invalid base64\n");
       +                                }
       +                        }
       +                        return;
                        case 4: /* color set */
                                if (narg < 3)
                                        break;
 (DIR) diff --git a/st.info b/st.info
       @@ -189,6 +189,7 @@ st| simpleterm,
                Se,
                Ss,
                Tc,
       +        Ms=\E]52;%p1%s;%p2%s\007,
        
        st-256color| simpleterm with 256 colors,
                use=st,
 (DIR) diff --git a/win.h b/win.h
       @@ -27,3 +27,4 @@ void xunloadfonts(void);
        void xresize(int, int);
        void xselpaste(void);
        unsigned long xwinid(void);
       +void xsetsel(char *, Time);
 (DIR) diff --git a/x.c b/x.c
       @@ -88,7 +88,6 @@ static void xclear(int, int, int, int);
        static void xdrawcursor(void);
        static int xgeommasktogravity(int);
        static int xloadfont(Font *, FcPattern *);
       -static void xsetsel(char *, Time);
        static void xunloadfont(Font *);
        
        static void expose(XEvent *);