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Annotation of src/usr.bin/tmux/cmd-paste-buffer.c, Revision 1.4

1.4     ! nicm        1: /* $OpenBSD: cmd-paste-buffer.c,v 1.3 2009/07/11 19:14:56 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20:
                     21: #include <string.h>
                     22:
                     23: #include "tmux.h"
                     24:
                     25: /*
                     26:  * Paste paste buffer if present.
                     27:  */
                     28:
                     29: int    cmd_paste_buffer_exec(struct cmd *, struct cmd_ctx *);
1.3       nicm       30: void   cmd_paste_buffer_lf2cr(struct buffer *, const char *, size_t);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_paste_buffer_entry = {
                     33:        "paste-buffer", "pasteb",
1.3       nicm       34:        "[-dr] " CMD_BUFFER_WINDOW_USAGE,
1.4     ! nicm       35:        0, CMD_CHFLAG('d')|CMD_CHFLAG('r'),
1.1       nicm       36:        cmd_buffer_init,
                     37:        cmd_buffer_parse,
                     38:        cmd_paste_buffer_exec,
                     39:        cmd_buffer_send,
                     40:        cmd_buffer_recv,
                     41:        cmd_buffer_free,
                     42:        cmd_buffer_print
                     43: };
                     44:
                     45: int
                     46: cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     47: {
                     48:        struct cmd_buffer_data  *data = self->data;
                     49:        struct winlink          *wl;
                     50:        struct window           *w;
                     51:        struct session          *s;
                     52:        struct paste_buffer     *pb;
                     53:
                     54:        if ((wl = cmd_find_window(ctx, data->target, &s)) == NULL)
                     55:                return (-1);
                     56:        w = wl->window;
                     57:
                     58:        if (data->buffer == -1)
                     59:                pb = paste_get_top(&s->buffers);
                     60:        else {
                     61:                if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
                     62:                        ctx->error(ctx, "no buffer %d", data->buffer);
                     63:                        return (-1);
                     64:                }
                     65:        }
                     66:
1.3       nicm       67:        if (pb != NULL && *pb->data != '\0') {
                     68:                /* -r means raw data without LF->CR conversion. */
1.4     ! nicm       69:                if (data->chflags & CMD_CHFLAG('r')) {
1.3       nicm       70:                        buffer_write(
                     71:                            w->active->out, pb->data, strlen(pb->data));
                     72:                } else {
                     73:                        cmd_paste_buffer_lf2cr(
                     74:                            w->active->out, pb->data, strlen(pb->data));
                     75:                }
                     76:        }
1.1       nicm       77:
                     78:        /* Delete the buffer if -d. */
1.4     ! nicm       79:        if (data->chflags & CMD_CHFLAG('d')) {
1.1       nicm       80:                if (data->buffer == -1)
                     81:                        paste_free_top(&s->buffers);
                     82:                else
                     83:                        paste_free_index(&s->buffers, data->buffer);
                     84:        }
                     85:
                     86:        return (0);
1.3       nicm       87: }
                     88:
                     89: /* Add bytes to a buffer but change every '\n' to '\r'. */
                     90: void
                     91: cmd_paste_buffer_lf2cr(struct buffer *b, const char *data, size_t size)
                     92: {
                     93:        const char      *end = data + size;
                     94:        const char      *lf;
                     95:
                     96:        while ((lf = memchr(data, '\n', end - data)) != NULL) {
                     97:                if (lf != data)
                     98:                        buffer_write(b, data, lf - data);
                     99:                buffer_write8(b, '\r');
                    100:                data = lf + 1;
                    101:        }
                    102:
                    103:        if (end != data)
                    104:                buffer_write(b, data, end - data);
1.1       nicm      105: }