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Annotation of src/usr.bin/tmux/cmd-set-buffer.c, Revision 1.21

1.21    ! nicm        1: /* $OpenBSD: cmd-set-buffer.c,v 1.20 2014/10/20 22:29:25 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:
1.11      nicm       21: #include <stdlib.h>
1.4       nicm       22: #include <string.h>
1.1       nicm       23:
                     24: #include "tmux.h"
                     25:
                     26: /*
1.15      nicm       27:  * Add, set, or append to a paste buffer.
1.1       nicm       28:  */
                     29:
1.13      nicm       30: enum cmd_retval         cmd_set_buffer_exec(struct cmd *, struct cmd_q *);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_set_buffer_entry = {
                     33:        "set-buffer", "setb",
1.18      nicm       34:        "ab:n:", 0, 1,
                     35:        "[-a] " CMD_BUFFER_USAGE " [-n new-buffer-name] data",
1.8       nicm       36:        0,
                     37:        cmd_set_buffer_exec
1.1       nicm       38: };
                     39:
1.12      nicm       40: enum cmd_retval
1.13      nicm       41: cmd_set_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       42: {
1.15      nicm       43:        struct args             *args = self->args;
                     44:        struct paste_buffer     *pb;
1.21    ! nicm       45:        char                    *bufdata, *cause;
        !            46:        const char              *bufname, *olddata;
        !            47:        size_t                   bufsize, newsize;
1.1       nicm       48:
1.18      nicm       49:        bufname = NULL;
                     50:
                     51:        if (args_has(args, 'n')) {
                     52:                if (args->argc > 0) {
                     53:                        cmdq_error(cmdq, "don't provide data with n flag");
                     54:                        return (CMD_RETURN_ERROR);
                     55:                }
                     56:
                     57:                if (args_has(args, 'b'))
                     58:                        bufname = args_get(args, 'b');
                     59:
                     60:                if (bufname == NULL) {
1.21    ! nicm       61:                        pb = paste_get_top(&bufname);
1.18      nicm       62:                        if (pb == NULL) {
                     63:                                cmdq_error(cmdq, "no buffer");
                     64:                                return (CMD_RETURN_ERROR);
                     65:                        }
                     66:                }
                     67:
                     68:                if (paste_rename(bufname, args_get(args, 'n'), &cause) != 0) {
                     69:                        cmdq_error(cmdq, "%s", cause);
                     70:                        free(cause);
                     71:                        return (CMD_RETURN_ERROR);
                     72:                }
                     73:
                     74:                return (CMD_RETURN_NORMAL);
                     75:        }
                     76:
                     77:        if (args->argc != 1) {
                     78:                cmdq_error(cmdq, "no data specified");
                     79:                return (CMD_RETURN_ERROR);
                     80:        }
1.21    ! nicm       81:        pb = NULL;
1.4       nicm       82:
1.21    ! nicm       83:        bufsize = 0;
        !            84:        bufdata = NULL;
1.15      nicm       85:
1.16      nicm       86:        if ((newsize = strlen(args->argv[0])) == 0)
                     87:                return (CMD_RETURN_NORMAL);
                     88:
1.15      nicm       89:        if (args_has(args, 'b')) {
1.18      nicm       90:                bufname = args_get(args, 'b');
                     91:                pb = paste_get_name(bufname);
1.21    ! nicm       92:        } else if (args_has(args, 'a'))
        !            93:                pb = paste_get_top(&bufname);
1.8       nicm       94:
1.15      nicm       95:        if (args_has(args, 'a') && pb != NULL) {
1.21    ! nicm       96:                olddata = paste_buffer_data(pb, &bufsize);
        !            97:                bufdata = xmalloc(bufsize);
        !            98:                memcpy(bufdata, olddata, bufsize);
1.8       nicm       99:        }
1.15      nicm      100:
1.21    ! nicm      101:        bufdata = xrealloc(bufdata, bufsize + newsize);
        !           102:        memcpy(bufdata + bufsize, args->argv[0], newsize);
        !           103:        bufsize += newsize;
1.15      nicm      104:
1.21    ! nicm      105:        if (paste_set(bufdata, bufsize, bufname, &cause) != 0) {
1.18      nicm      106:                cmdq_error(cmdq, "%s", cause);
1.21    ! nicm      107:                free(bufdata);
1.18      nicm      108:                free(cause);
                    109:                return (CMD_RETURN_ERROR);
                    110:        }
1.8       nicm      111:
1.12      nicm      112:        return (CMD_RETURN_NORMAL);
1.1       nicm      113: }