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Annotation of embedaddon/tmux/cmd-set-buffer.c, revision 1.1.1.1

1.1       misho       1: /* $OpenBSD$ */
                      2: 
                      3: /*
                      4:  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
                      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: 
                     21: #include <stdlib.h>
                     22: #include <string.h>
                     23: 
                     24: #include "tmux.h"
                     25: 
                     26: /*
                     27:  * Add, set, append to or delete a paste buffer.
                     28:  */
                     29: 
                     30: static enum cmd_retval cmd_set_buffer_exec(struct cmd *, struct cmdq_item *);
                     31: 
                     32: const struct cmd_entry cmd_set_buffer_entry = {
                     33:        .name = "set-buffer",
                     34:        .alias = "setb",
                     35: 
                     36:        .args = { "ab:n:", 0, 1 },
                     37:        .usage = "[-a] " CMD_BUFFER_USAGE " [-n new-buffer-name] data",
                     38: 
                     39:        .flags = CMD_AFTERHOOK,
                     40:        .exec = cmd_set_buffer_exec
                     41: };
                     42: 
                     43: const struct cmd_entry cmd_delete_buffer_entry = {
                     44:        .name = "delete-buffer",
                     45:        .alias = "deleteb",
                     46: 
                     47:        .args = { "b:", 0, 0 },
                     48:        .usage = CMD_BUFFER_USAGE,
                     49: 
                     50:        .flags = CMD_AFTERHOOK,
                     51:        .exec = cmd_set_buffer_exec
                     52: };
                     53: 
                     54: static enum cmd_retval
                     55: cmd_set_buffer_exec(struct cmd *self, struct cmdq_item *item)
                     56: {
                     57:        struct args             *args = self->args;
                     58:        struct paste_buffer     *pb;
                     59:        char                    *bufdata, *cause;
                     60:        const char              *bufname, *olddata;
                     61:        size_t                   bufsize, newsize;
                     62: 
                     63:        bufname = args_get(args, 'b');
                     64:        if (bufname == NULL)
                     65:                pb = NULL;
                     66:        else
                     67:                pb = paste_get_name(bufname);
                     68: 
                     69:        if (self->entry == &cmd_delete_buffer_entry) {
                     70:                if (pb == NULL)
                     71:                        pb = paste_get_top(&bufname);
                     72:                if (pb == NULL) {
                     73:                        cmdq_error(item, "no buffer");
                     74:                        return (CMD_RETURN_ERROR);
                     75:                }
                     76:                paste_free(pb);
                     77:                return (CMD_RETURN_NORMAL);
                     78:        }
                     79: 
                     80:        if (args_has(args, 'n')) {
                     81:                if (pb == NULL)
                     82:                        pb = paste_get_top(&bufname);
                     83:                if (pb == NULL) {
                     84:                        cmdq_error(item, "no buffer");
                     85:                        return (CMD_RETURN_ERROR);
                     86:                }
                     87:                if (paste_rename(bufname, args_get(args, 'n'), &cause) != 0) {
                     88:                        cmdq_error(item, "%s", cause);
                     89:                        free(cause);
                     90:                        return (CMD_RETURN_ERROR);
                     91:                }
                     92:                return (CMD_RETURN_NORMAL);
                     93:        }
                     94: 
                     95:        if (args->argc != 1) {
                     96:                cmdq_error(item, "no data specified");
                     97:                return (CMD_RETURN_ERROR);
                     98:        }
                     99:        if ((newsize = strlen(args->argv[0])) == 0)
                    100:                return (CMD_RETURN_NORMAL);
                    101: 
                    102:        bufsize = 0;
                    103:        bufdata = NULL;
                    104: 
                    105:        if (args_has(args, 'a') && pb != NULL) {
                    106:                olddata = paste_buffer_data(pb, &bufsize);
                    107:                bufdata = xmalloc(bufsize);
                    108:                memcpy(bufdata, olddata, bufsize);
                    109:        }
                    110: 
                    111:        bufdata = xrealloc(bufdata, bufsize + newsize);
                    112:        memcpy(bufdata + bufsize, args->argv[0], newsize);
                    113:        bufsize += newsize;
                    114: 
                    115:        if (paste_set(bufdata, bufsize, bufname, &cause) != 0) {
                    116:                cmdq_error(item, "%s", cause);
                    117:                free(bufdata);
                    118:                free(cause);
                    119:                return (CMD_RETURN_ERROR);
                    120:        }
                    121: 
                    122:        return (CMD_RETURN_NORMAL);
                    123: }