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Annotation of src/usr.bin/tmux/cmd-save-buffer.c, Revision 1.8

1.8     ! nicm        1: /* $OpenBSD: cmd-save-buffer.c,v 1.7 2010/06/28 22:10:42 nicm Exp $ */
1.1       nicm        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 <string.h>
                     24:
                     25: #include "tmux.h"
                     26:
                     27: /*
                     28:  * Saves a session paste buffer to a file.
                     29:  */
                     30:
                     31: int    cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *);
                     32:
                     33: const struct cmd_entry cmd_save_buffer_entry = {
                     34:        "save-buffer", "saveb",
                     35:        "[-a] " CMD_BUFFER_SESSION_USAGE " path",
1.6       nicm       36:        CMD_ARG1, "a",
1.1       nicm       37:        cmd_buffer_init,
                     38:        cmd_buffer_parse,
                     39:        cmd_save_buffer_exec,
                     40:        cmd_buffer_free,
                     41:        cmd_buffer_print
                     42: };
                     43:
                     44: int
                     45: cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     46: {
                     47:        struct cmd_buffer_data  *data = self->data;
                     48:        struct session          *s;
                     49:        struct paste_buffer     *pb;
1.8     ! nicm       50:        mode_t                   mask;
        !            51:        FILE                    *f;
1.1       nicm       52:
                     53:        if ((s = cmd_find_session(ctx, data->target)) == NULL)
                     54:                return (-1);
                     55:
                     56:        if (data->buffer == -1) {
                     57:                if ((pb = paste_get_top(&s->buffers)) == NULL) {
                     58:                        ctx->error(ctx, "no buffers");
                     59:                        return (-1);
                     60:                }
                     61:        } else {
                     62:                if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
                     63:                        ctx->error(ctx, "no buffer %d", data->buffer);
                     64:                        return (-1);
                     65:                }
                     66:        }
                     67:
1.7       nicm       68:        if (strcmp(data->arg, "-") == 0) {
                     69:                if (ctx->cmdclient == NULL) {
                     70:                        ctx->error(ctx, "%s: can't write to stdout", data->arg);
                     71:                        return (-1);
                     72:                }
1.8     ! nicm       73:                bufferevent_write(
        !            74:                    ctx->cmdclient->stdout_event, pb->data, pb->size);
1.7       nicm       75:        } else {
                     76:                mask = umask(S_IRWXG | S_IRWXO);
                     77:                if (cmd_check_flag(data->chflags, 'a'))
                     78:                        f = fopen(data->arg, "ab");
                     79:                else
                     80:                        f = fopen(data->arg, "wb");
                     81:                umask(mask);
                     82:                if (f == NULL) {
                     83:                        ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
                     84:                        return (-1);
                     85:                }
1.8     ! nicm       86:                if (fwrite(pb->data, 1, pb->size, f) != pb->size) {
        !            87:                        ctx->error(ctx, "%s: fwrite error", data->arg);
        !            88:                        fclose(f);
        !            89:                        return (-1);
        !            90:                }
        !            91:                fclose(f);
1.1       nicm       92:        }
                     93:
                     94:        return (0);
                     95: }