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Annotation of src/usr.bin/tmux/cmd-show-buffer.c, Revision 1.9

1.9     ! nicm        1: /* $OpenBSD: cmd-show-buffer.c,v 1.8 2009/12/03 22:50:10 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",
1.9     ! nicm       33:        CMD_BUFFER_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:
1.9     ! nicm       52:        if ((s = cmd_find_session(ctx, NULL)) == NULL)
1.1       nicm       53:                return (-1);
                     54:
                     55:        if (data->buffer == -1) {
1.9     ! nicm       56:                if ((pb = paste_get_top(&global_buffers)) == NULL) {
1.1       nicm       57:                        ctx->error(ctx, "no buffers");
                     58:                        return (-1);
                     59:                }
1.9     ! nicm       60:        } else {
        !            61:                pb = paste_get_index(&global_buffers, data->buffer);
        !            62:                if (pb == NULL) {
        !            63:                        ctx->error(ctx, "no buffer %d", data->buffer);
        !            64:                        return (-1);
        !            65:                }
1.1       nicm       66:        }
                     67:
1.6       nicm       68:        size = pb->size;
1.4       nicm       69:        if (size > SIZE_MAX / 4 - 1)
                     70:                size = SIZE_MAX / 4 - 1;
                     71:        in = xmalloc(size * 4 + 1);
                     72:        strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
                     73:
                     74:        width = s->sx;
                     75:        if (ctx->cmdclient != NULL)
                     76:                width = ctx->cmdclient->tty.sx;
1.8       nicm       77:
1.4       nicm       78:        buf = xmalloc(width + 1);
                     79:        len = 0;
1.8       nicm       80:
1.4       nicm       81:        ptr = in;
                     82:        do {
                     83:                buf[len++] = *ptr++;
1.8       nicm       84:
1.4       nicm       85:                if (len == width || buf[len - 1] == '\n') {
                     86:                        if (buf[len - 1] == '\n')
                     87:                                len--;
                     88:                        buf[len] = '\0';
1.1       nicm       89:
1.8       nicm       90:                        ctx->print(ctx, "%s", buf);
1.4       nicm       91:                        len = 0;
                     92:                }
                     93:        } while (*ptr != '\0');
1.8       nicm       94:
1.4       nicm       95:        if (len != 0) {
1.1       nicm       96:                buf[len] = '\0';
1.5       nicm       97:                ctx->print(ctx, "%s", buf);
1.1       nicm       98:        }
1.4       nicm       99:        xfree(buf);
                    100:
                    101:        xfree(in);
1.1       nicm      102:
                    103:        return (0);
                    104: }