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Annotation of src/usr.bin/tmux/cmd-show-buffer.c, Revision 1.14

1.14    ! nicm        1: /* $OpenBSD: cmd-show-buffer.c,v 1.13 2012/07/10 11:53:01 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:
1.13      nicm       21: #include <stdlib.h>
1.4       nicm       22: #include <vis.h>
1.1       nicm       23:
                     24: #include "tmux.h"
                     25:
                     26: /*
1.12      nicm       27:  * Show a paste buffer.
1.1       nicm       28:  */
                     29:
1.14    ! nicm       30: enum cmd_retval         cmd_show_buffer_exec(struct cmd *, struct cmd_ctx *);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_show_buffer_entry = {
                     33:        "show-buffer", "showb",
1.10      nicm       34:        "b:", 0, 0,
1.9       nicm       35:        CMD_BUFFER_USAGE,
1.10      nicm       36:        0,
                     37:        NULL,
                     38:        NULL,
                     39:        cmd_show_buffer_exec
1.1       nicm       40: };
                     41:
1.14    ! nicm       42: enum cmd_retval
1.1       nicm       43: cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     44: {
1.10      nicm       45:        struct args             *args = self->args;
1.1       nicm       46:        struct session          *s;
                     47:        struct paste_buffer     *pb;
1.10      nicm       48:        int                      buffer;
                     49:        char                    *in, *buf, *ptr, *cause;
1.4       nicm       50:        size_t                   size, len;
                     51:        u_int                    width;
1.1       nicm       52:
1.11      nicm       53:        if ((s = cmd_find_session(ctx, NULL, 0)) == NULL)
1.14    ! nicm       54:                return (CMD_RETURN_ERROR);
1.1       nicm       55:
1.10      nicm       56:        if (!args_has(args, 'b')) {
1.9       nicm       57:                if ((pb = paste_get_top(&global_buffers)) == NULL) {
1.1       nicm       58:                        ctx->error(ctx, "no buffers");
1.14    ! nicm       59:                        return (CMD_RETURN_ERROR);
1.1       nicm       60:                }
1.9       nicm       61:        } else {
1.10      nicm       62:                buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
                     63:                if (cause != NULL) {
                     64:                        ctx->error(ctx, "buffer %s", cause);
1.13      nicm       65:                        free(cause);
1.14    ! nicm       66:                        return (CMD_RETURN_ERROR);
1.10      nicm       67:                }
                     68:
                     69:                pb = paste_get_index(&global_buffers, buffer);
1.9       nicm       70:                if (pb == NULL) {
1.10      nicm       71:                        ctx->error(ctx, "no buffer %d", buffer);
1.14    ! nicm       72:                        return (CMD_RETURN_ERROR);
1.9       nicm       73:                }
1.1       nicm       74:        }
                     75:
1.6       nicm       76:        size = pb->size;
1.4       nicm       77:        if (size > SIZE_MAX / 4 - 1)
                     78:                size = SIZE_MAX / 4 - 1;
                     79:        in = xmalloc(size * 4 + 1);
                     80:        strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
                     81:
                     82:        width = s->sx;
                     83:        if (ctx->cmdclient != NULL)
                     84:                width = ctx->cmdclient->tty.sx;
1.8       nicm       85:
1.4       nicm       86:        buf = xmalloc(width + 1);
                     87:        len = 0;
1.8       nicm       88:
1.4       nicm       89:        ptr = in;
                     90:        do {
                     91:                buf[len++] = *ptr++;
1.8       nicm       92:
1.4       nicm       93:                if (len == width || buf[len - 1] == '\n') {
                     94:                        if (buf[len - 1] == '\n')
                     95:                                len--;
                     96:                        buf[len] = '\0';
1.1       nicm       97:
1.8       nicm       98:                        ctx->print(ctx, "%s", buf);
1.4       nicm       99:                        len = 0;
                    100:                }
                    101:        } while (*ptr != '\0');
1.8       nicm      102:
1.4       nicm      103:        if (len != 0) {
1.1       nicm      104:                buf[len] = '\0';
1.5       nicm      105:                ctx->print(ctx, "%s", buf);
1.1       nicm      106:        }
1.13      nicm      107:        free(buf);
1.4       nicm      108:
1.13      nicm      109:        free(in);
1.1       nicm      110:
1.14    ! nicm      111:        return (CMD_RETURN_NORMAL);
1.1       nicm      112: }