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Annotation of src/usr.bin/tmux/cmd-paste-buffer.c, Revision 1.12

1.12    ! nicm        1: /* $OpenBSD: cmd-paste-buffer.c,v 1.11 2010/03/22 19:13:28 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 *);
1.7       nicm       30: void   cmd_paste_buffer_lf2cr(struct window_pane *, const char *, size_t);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_paste_buffer_entry = {
                     33:        "paste-buffer", "pasteb",
1.11      nicm       34:        "[-dr] " CMD_BUFFER_PANE_USAGE,
1.8       nicm       35:        0, "dr",
1.1       nicm       36:        cmd_buffer_init,
                     37:        cmd_buffer_parse,
                     38:        cmd_paste_buffer_exec,
                     39:        cmd_buffer_free,
                     40:        cmd_buffer_print
                     41: };
                     42:
                     43: int
                     44: cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     45: {
                     46:        struct cmd_buffer_data  *data = self->data;
1.6       nicm       47:        struct window_pane      *wp;
1.1       nicm       48:        struct session          *s;
                     49:        struct paste_buffer     *pb;
                     50:
1.12    ! nicm       51:        if (cmd_find_pane(ctx, data->target, &s, &wp) == NULL)
1.1       nicm       52:                return (-1);
                     53:
                     54:        if (data->buffer == -1)
                     55:                pb = paste_get_top(&s->buffers);
                     56:        else {
                     57:                if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
                     58:                        ctx->error(ctx, "no buffer %d", data->buffer);
                     59:                        return (-1);
                     60:                }
                     61:        }
                     62:
1.9       nicm       63:        if (pb != NULL) {
1.3       nicm       64:                /* -r means raw data without LF->CR conversion. */
1.8       nicm       65:                if (cmd_check_flag(data->chflags, 'r'))
1.7       nicm       66:                        bufferevent_write(wp->event, pb->data, pb->size);
1.6       nicm       67:                else
1.7       nicm       68:                        cmd_paste_buffer_lf2cr(wp, pb->data, pb->size);
1.3       nicm       69:        }
1.1       nicm       70:
                     71:        /* Delete the buffer if -d. */
1.8       nicm       72:        if (cmd_check_flag(data->chflags, 'd')) {
1.1       nicm       73:                if (data->buffer == -1)
                     74:                        paste_free_top(&s->buffers);
                     75:                else
                     76:                        paste_free_index(&s->buffers, data->buffer);
                     77:        }
                     78:
1.10      nicm       79:        return (0);
1.3       nicm       80: }
                     81:
                     82: /* Add bytes to a buffer but change every '\n' to '\r'. */
                     83: void
1.7       nicm       84: cmd_paste_buffer_lf2cr(struct window_pane *wp, const char *data, size_t size)
1.3       nicm       85: {
                     86:        const char      *end = data + size;
                     87:        const char      *lf;
                     88:
                     89:        while ((lf = memchr(data, '\n', end - data)) != NULL) {
                     90:                if (lf != data)
1.7       nicm       91:                        bufferevent_write(wp->event, data, lf - data);
                     92:                bufferevent_write(wp->event, "\r", 1);
1.3       nicm       93:                data = lf + 1;
                     94:        }
                     95:
                     96:        if (end != data)
1.7       nicm       97:                bufferevent_write(wp->event, data, end - data);
1.1       nicm       98: }