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Annotation of src/usr.bin/tmux/cmd-save-buffer.c, Revision 1.2

1.2     ! nicm        1: /* $OpenBSD: cmd-save-buffer.c,v 1.1 2009/06/01 22:58:49 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",
1.2     ! nicm       36:        CMD_ARG1, CMD_CHFLAG('a'),
1.1       nicm       37:        cmd_buffer_init,
                     38:        cmd_buffer_parse,
                     39:        cmd_save_buffer_exec,
                     40:        cmd_buffer_send,
                     41:        cmd_buffer_recv,
                     42:        cmd_buffer_free,
                     43:        cmd_buffer_print
                     44: };
                     45:
                     46: int
                     47: cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
                     48: {
                     49:        struct cmd_buffer_data  *data = self->data;
                     50:        struct session          *s;
                     51:        struct paste_buffer     *pb;
                     52:        mode_t                  mask;
                     53:        FILE                    *f;
                     54:
                     55:        if ((s = cmd_find_session(ctx, data->target)) == NULL)
                     56:                return (-1);
                     57:
                     58:        if (data->buffer == -1) {
                     59:                if ((pb = paste_get_top(&s->buffers)) == NULL) {
                     60:                        ctx->error(ctx, "no buffers");
                     61:                        return (-1);
                     62:                }
                     63:        } else {
                     64:                if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
                     65:                        ctx->error(ctx, "no buffer %d", data->buffer);
                     66:                        return (-1);
                     67:                }
                     68:        }
                     69:
                     70:        mask = umask(S_IRWXG | S_IRWXO);
1.2     ! nicm       71:        if (data->chflags & CMD_CHFLAG('a'))
1.1       nicm       72:                f = fopen(data->arg, "ab");
                     73:        else
                     74:                f = fopen(data->arg, "wb");
                     75:        if (f == NULL) {
                     76:                ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
                     77:                return (-1);
                     78:        }
                     79:
                     80:        if (fwrite(pb->data, 1, strlen(pb->data), f) != strlen(pb->data)) {
                     81:                ctx->error(ctx, "%s: fwrite error", data->arg);
                     82:                fclose(f);
                     83:                return (-1);
                     84:        }
                     85:
                     86:        fclose(f);
                     87:        umask(mask);
                     88:
                     89:        return (0);
                     90: }