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