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Annotation of src/usr.bin/tmux/cmd-show-buffer.c, Revision 1.8

1.8     ! nicm        1: /* $OpenBSD: cmd-show-buffer.c,v 1.7 2009/11/13 19:53:29 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:
1.4       nicm       21: #include <vis.h>
1.1       nicm       22:
                     23: #include "tmux.h"
                     24:
                     25: /*
                     26:  * Show a session paste buffer.
                     27:  */
                     28:
                     29: int    cmd_show_buffer_exec(struct cmd *, struct cmd_ctx *);
                     30:
                     31: const struct cmd_entry cmd_show_buffer_entry = {
                     32:        "show-buffer", "showb",
                     33:        CMD_BUFFER_SESSION_USAGE,
1.7       nicm       34:        0, "",
1.1       nicm       35:        cmd_buffer_init,
                     36:        cmd_buffer_parse,
                     37:        cmd_show_buffer_exec,
                     38:        cmd_buffer_free,
                     39:        cmd_buffer_print
                     40: };
                     41:
                     42: int
                     43: cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     44: {
                     45:        struct cmd_buffer_data  *data = self->data;
                     46:        struct session          *s;
                     47:        struct paste_buffer     *pb;
1.4       nicm       48:        char                    *in, *buf, *ptr;
                     49:        size_t                   size, len;
                     50:        u_int                    width;
1.1       nicm       51:
                     52:        if ((s = cmd_find_session(ctx, data->target)) == NULL)
                     53:                return (-1);
                     54:
                     55:        if (data->buffer == -1) {
                     56:                if ((pb = paste_get_top(&s->buffers)) == NULL) {
                     57:                        ctx->error(ctx, "no buffers");
                     58:                        return (-1);
                     59:                }
                     60:        } else if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
                     61:                ctx->error(ctx, "no buffer %d", data->buffer);
                     62:                return (-1);
                     63:        }
1.4       nicm       64:        if (pb == NULL)
                     65:                return (0);
1.1       nicm       66:
1.6       nicm       67:        size = pb->size;
1.4       nicm       68:        if (size > SIZE_MAX / 4 - 1)
                     69:                size = SIZE_MAX / 4 - 1;
                     70:        in = xmalloc(size * 4 + 1);
                     71:        strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
                     72:
                     73:        width = s->sx;
                     74:        if (ctx->cmdclient != NULL)
                     75:                width = ctx->cmdclient->tty.sx;
1.8     ! nicm       76:
1.4       nicm       77:        buf = xmalloc(width + 1);
                     78:        len = 0;
1.8     ! nicm       79:
1.4       nicm       80:        ptr = in;
                     81:        do {
                     82:                buf[len++] = *ptr++;
1.8     ! nicm       83:
1.4       nicm       84:                if (len == width || buf[len - 1] == '\n') {
                     85:                        if (buf[len - 1] == '\n')
                     86:                                len--;
                     87:                        buf[len] = '\0';
1.1       nicm       88:
1.8     ! nicm       89:                        ctx->print(ctx, "%s", buf);
1.4       nicm       90:                        len = 0;
                     91:                }
                     92:        } while (*ptr != '\0');
1.8     ! nicm       93:
1.4       nicm       94:        if (len != 0) {
1.1       nicm       95:                buf[len] = '\0';
1.5       nicm       96:                ctx->print(ctx, "%s", buf);
1.1       nicm       97:        }
1.4       nicm       98:        xfree(buf);
                     99:
                    100:        xfree(in);
1.1       nicm      101:
                    102:        return (0);
                    103: }