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Annotation of src/usr.bin/tmux/cmd-paste-buffer.c, Revision 1.5

1.5     ! nicm        1: /* $OpenBSD: cmd-paste-buffer.c,v 1.4 2009/07/13 23:11:35 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_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;
                     47:        struct winlink          *wl;
                     48:        struct window           *w;
                     49:        struct session          *s;
                     50:        struct paste_buffer     *pb;
                     51:
                     52:        if ((wl = cmd_find_window(ctx, data->target, &s)) == NULL)
                     53:                return (-1);
                     54:        w = wl->window;
                     55:
                     56:        if (data->buffer == -1)
                     57:                pb = paste_get_top(&s->buffers);
                     58:        else {
                     59:                if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
                     60:                        ctx->error(ctx, "no buffer %d", data->buffer);
                     61:                        return (-1);
                     62:                }
                     63:        }
                     64:
1.3       nicm       65:        if (pb != NULL && *pb->data != '\0') {
                     66:                /* -r means raw data without LF->CR conversion. */
1.4       nicm       67:                if (data->chflags & CMD_CHFLAG('r')) {
1.3       nicm       68:                        buffer_write(
                     69:                            w->active->out, pb->data, strlen(pb->data));
                     70:                } else {
                     71:                        cmd_paste_buffer_lf2cr(
                     72:                            w->active->out, pb->data, strlen(pb->data));
                     73:                }
                     74:        }
1.1       nicm       75:
                     76:        /* Delete the buffer if -d. */
1.4       nicm       77:        if (data->chflags & CMD_CHFLAG('d')) {
1.1       nicm       78:                if (data->buffer == -1)
                     79:                        paste_free_top(&s->buffers);
                     80:                else
                     81:                        paste_free_index(&s->buffers, data->buffer);
                     82:        }
                     83:
                     84:        return (0);
1.3       nicm       85: }
                     86:
                     87: /* Add bytes to a buffer but change every '\n' to '\r'. */
                     88: void
                     89: cmd_paste_buffer_lf2cr(struct buffer *b, const char *data, size_t size)
                     90: {
                     91:        const char      *end = data + size;
                     92:        const char      *lf;
                     93:
                     94:        while ((lf = memchr(data, '\n', end - data)) != NULL) {
                     95:                if (lf != data)
                     96:                        buffer_write(b, data, lf - data);
                     97:                buffer_write8(b, '\r');
                     98:                data = lf + 1;
                     99:        }
                    100:
                    101:        if (end != data)
                    102:                buffer_write(b, data, end - data);
1.1       nicm      103: }