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Annotation of src/usr.bin/tmux/cmd-show-buffer.c, Revision 1.11

1.11    ! nicm        1: /* $OpenBSD: cmd-show-buffer.c,v 1.10 2011/01/04 00:42:47 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",
1.10      nicm       33:        "b:", 0, 0,
1.9       nicm       34:        CMD_BUFFER_USAGE,
1.10      nicm       35:        0,
                     36:        NULL,
                     37:        NULL,
                     38:        cmd_show_buffer_exec
1.1       nicm       39: };
                     40:
                     41: int
                     42: cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     43: {
1.10      nicm       44:        struct args             *args = self->args;
1.1       nicm       45:        struct session          *s;
                     46:        struct paste_buffer     *pb;
1.10      nicm       47:        int                      buffer;
                     48:        char                    *in, *buf, *ptr, *cause;
1.4       nicm       49:        size_t                   size, len;
                     50:        u_int                    width;
1.1       nicm       51:
1.11    ! nicm       52:        if ((s = cmd_find_session(ctx, NULL, 0)) == NULL)
1.1       nicm       53:                return (-1);
                     54:
1.10      nicm       55:        if (!args_has(args, 'b')) {
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 {
1.10      nicm       61:                buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
                     62:                if (cause != NULL) {
                     63:                        ctx->error(ctx, "buffer %s", cause);
                     64:                        xfree(cause);
                     65:                        return (-1);
                     66:                }
                     67:
                     68:                pb = paste_get_index(&global_buffers, buffer);
1.9       nicm       69:                if (pb == NULL) {
1.10      nicm       70:                        ctx->error(ctx, "no buffer %d", buffer);
1.9       nicm       71:                        return (-1);
                     72:                }
1.1       nicm       73:        }
                     74:
1.6       nicm       75:        size = pb->size;
1.4       nicm       76:        if (size > SIZE_MAX / 4 - 1)
                     77:                size = SIZE_MAX / 4 - 1;
                     78:        in = xmalloc(size * 4 + 1);
                     79:        strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
                     80:
                     81:        width = s->sx;
                     82:        if (ctx->cmdclient != NULL)
                     83:                width = ctx->cmdclient->tty.sx;
1.8       nicm       84:
1.4       nicm       85:        buf = xmalloc(width + 1);
                     86:        len = 0;
1.8       nicm       87:
1.4       nicm       88:        ptr = in;
                     89:        do {
                     90:                buf[len++] = *ptr++;
1.8       nicm       91:
1.4       nicm       92:                if (len == width || buf[len - 1] == '\n') {
                     93:                        if (buf[len - 1] == '\n')
                     94:                                len--;
                     95:                        buf[len] = '\0';
1.1       nicm       96:
1.8       nicm       97:                        ctx->print(ctx, "%s", buf);
1.4       nicm       98:                        len = 0;
                     99:                }
                    100:        } while (*ptr != '\0');
1.8       nicm      101:
1.4       nicm      102:        if (len != 0) {
1.1       nicm      103:                buf[len] = '\0';
1.5       nicm      104:                ctx->print(ctx, "%s", buf);
1.1       nicm      105:        }
1.4       nicm      106:        xfree(buf);
                    107:
                    108:        xfree(in);
1.1       nicm      109:
                    110:        return (0);
                    111: }