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Annotation of src/usr.bin/tmux/cmd-load-buffer.c, Revision 1.1

1.1     ! nicm        1: /* $OpenBSD$ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
        !             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: #include <sys/stat.h>
        !            21:
        !            22: #include <errno.h>
        !            23: #include <stdlib.h>
        !            24: #include <string.h>
        !            25: #include <unistd.h>
        !            26:
        !            27: #include "tmux.h"
        !            28:
        !            29: /*
        !            30:  * Loads a session paste buffer from a file.
        !            31:  */
        !            32:
        !            33: int    cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *);
        !            34:
        !            35: const struct cmd_entry cmd_load_buffer_entry = {
        !            36:        "load-buffer", "loadb",
        !            37:        CMD_BUFFER_SESSION_USAGE " path",
        !            38:        CMD_ARG1,
        !            39:        cmd_buffer_init,
        !            40:        cmd_buffer_parse,
        !            41:        cmd_load_buffer_exec,
        !            42:        cmd_buffer_send,
        !            43:        cmd_buffer_recv,
        !            44:        cmd_buffer_free,
        !            45:        cmd_buffer_print
        !            46: };
        !            47:
        !            48: int
        !            49: cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
        !            50: {
        !            51:        struct cmd_buffer_data  *data = self->data;
        !            52:        struct session          *s;
        !            53:        struct stat             statbuf;
        !            54:        FILE                    *f;
        !            55:        char                    *buf;
        !            56:        u_int                   limit;
        !            57:
        !            58:        if ((s = cmd_find_session(ctx, data->target)) == NULL)
        !            59:                return (-1);
        !            60:
        !            61:        if (stat(data->arg, &statbuf) < 0) {
        !            62:                ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
        !            63:                return (-1);
        !            64:        }
        !            65:        if (!S_ISREG(statbuf.st_mode)) {
        !            66:                ctx->error(ctx, "%s: not a regular file", data->arg);
        !            67:                return (-1);
        !            68:        }
        !            69:
        !            70:        if ((f = fopen(data->arg, "rb")) == NULL) {
        !            71:                ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
        !            72:                return (-1);
        !            73:        }
        !            74:
        !            75:        /*
        !            76:         * We don't want to die due to memory exhaustion, hence xmalloc can't
        !            77:         * be used here.
        !            78:         */
        !            79:        if ((buf = malloc(statbuf.st_size + 1)) == NULL) {
        !            80:                ctx->error(ctx, "malloc error: %s", strerror(errno));
        !            81:                return (-1);
        !            82:        }
        !            83:
        !            84:        if (fread(buf, 1, statbuf.st_size, f) != (size_t) statbuf.st_size) {
        !            85:                ctx->error(ctx, "%s: fread error", data->arg);
        !            86:                xfree(buf);
        !            87:                fclose(f);
        !            88:                return (-1);
        !            89:        }
        !            90:
        !            91:        buf[statbuf.st_size] = '\0';
        !            92:        fclose(f);
        !            93:
        !            94:        limit = options_get_number(&s->options, "buffer-limit");
        !            95:        if (data->buffer == -1) {
        !            96:                paste_add(&s->buffers, buf, limit);
        !            97:                return (0);
        !            98:        }
        !            99:        if (paste_replace(&s->buffers, data->buffer, buf) != 0) {
        !           100:                ctx->error(ctx, "no buffer %d", data->buffer);
        !           101:                xfree(buf);
        !           102:                return (-1);
        !           103:        }
        !           104:
        !           105:        return (0);
        !           106: }