Annotation of src/usr.bin/tmux/cmd-save-buffer.c, Revision 1.18
1.18 ! nicm 1: /* $OpenBSD: cmd-save-buffer.c,v 1.17 2013/03/22 15:53:24 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>
1.15 nicm 23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
1.18 ! nicm 25: #include <vis.h>
1.1 nicm 26:
27: #include "tmux.h"
28:
29: /*
1.11 nicm 30: * Saves a paste buffer to a file.
1.1 nicm 31: */
32:
1.16 nicm 33: enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *);
1.1 nicm 34:
35: const struct cmd_entry cmd_save_buffer_entry = {
36: "save-buffer", "saveb",
1.10 nicm 37: "ab:", 1, 1,
1.13 nicm 38: "[-a] " CMD_BUFFER_USAGE " path",
1.10 nicm 39: 0,
40: NULL,
41: NULL,
42: cmd_save_buffer_exec
1.1 nicm 43: };
44:
1.18 ! nicm 45: const struct cmd_entry cmd_show_buffer_entry = {
! 46: "show-buffer", "showb",
! 47: "b:", 0, 0,
! 48: CMD_BUFFER_USAGE,
! 49: 0,
! 50: NULL,
! 51: NULL,
! 52: cmd_save_buffer_exec
! 53: };
! 54:
1.16 nicm 55: enum cmd_retval
1.1 nicm 56: cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
57: {
1.10 nicm 58: struct args *args = self->args;
1.17 nicm 59: struct client *c;
1.12 nicm 60: struct session *s;
1.1 nicm 61: struct paste_buffer *pb;
1.12 nicm 62: const char *path, *newpath, *wd;
1.18 ! nicm 63: char *cause, *start, *end;
! 64: size_t size, used;
1.10 nicm 65: int buffer;
1.8 nicm 66: mode_t mask;
67: FILE *f;
1.18 ! nicm 68: char *msg;
! 69: size_t msglen;
1.1 nicm 70:
1.10 nicm 71: if (!args_has(args, 'b')) {
1.9 nicm 72: if ((pb = paste_get_top(&global_buffers)) == NULL) {
1.1 nicm 73: ctx->error(ctx, "no buffers");
1.16 nicm 74: return (CMD_RETURN_ERROR);
1.1 nicm 75: }
76: } else {
1.10 nicm 77: buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
78: if (cause != NULL) {
79: ctx->error(ctx, "buffer %s", cause);
1.15 nicm 80: free(cause);
1.16 nicm 81: return (CMD_RETURN_ERROR);
1.10 nicm 82: }
83:
84: pb = paste_get_index(&global_buffers, buffer);
1.9 nicm 85: if (pb == NULL) {
1.10 nicm 86: ctx->error(ctx, "no buffer %d", buffer);
1.16 nicm 87: return (CMD_RETURN_ERROR);
1.1 nicm 88: }
89: }
90:
1.18 ! nicm 91: if (self->entry == &cmd_show_buffer_entry)
! 92: path = "-";
! 93: else
! 94: path = args->argv[0];
1.10 nicm 95: if (strcmp(path, "-") == 0) {
1.18 ! nicm 96: c = ctx->cmdclient;
! 97: if (c != NULL)
! 98: goto do_stdout;
1.17 nicm 99: c = ctx->curclient;
1.18 ! nicm 100: if (c->flags & CLIENT_CONTROL)
! 101: goto do_stdout;
1.12 nicm 102: if (c != NULL)
1.18 ! nicm 103: goto do_print;
! 104: ctx->error(ctx, "can't write to stdout");
! 105: return (CMD_RETURN_ERROR);
! 106: }
! 107:
! 108: c = ctx->cmdclient;
! 109: if (c != NULL)
! 110: wd = c->cwd;
! 111: else if ((s = cmd_current_session(ctx, 0)) != NULL) {
! 112: wd = options_get_string(&s->options, "default-path");
! 113: if (*wd == '\0')
! 114: wd = s->cwd;
! 115: } else
! 116: wd = NULL;
! 117: if (wd != NULL && *wd != '\0') {
! 118: newpath = get_full_path(wd, path);
! 119: if (newpath != NULL)
! 120: path = newpath;
! 121: }
! 122:
! 123: mask = umask(S_IRWXG | S_IRWXO);
! 124: if (args_has(self->args, 'a'))
! 125: f = fopen(path, "ab");
! 126: else
! 127: f = fopen(path, "wb");
! 128: umask(mask);
! 129: if (f == NULL) {
! 130: ctx->error(ctx, "%s: %s", path, strerror(errno));
! 131: return (CMD_RETURN_ERROR);
! 132: }
! 133: if (fwrite(pb->data, 1, pb->size, f) != pb->size) {
! 134: ctx->error(ctx, "%s: fwrite error", path);
! 135: fclose(f);
! 136: return (CMD_RETURN_ERROR);
! 137: }
! 138: fclose(f);
! 139:
! 140: return (CMD_RETURN_NORMAL);
! 141:
! 142: do_stdout:
! 143: evbuffer_add(c->stdout_data, pb->data, pb->size);
! 144: server_push_stdout(c);
! 145: return (CMD_RETURN_NORMAL);
! 146:
! 147: do_print:
! 148: if (pb->size > (INT_MAX / 4) - 1) {
! 149: ctx->error(ctx, "buffer too big");
! 150: return (CMD_RETURN_ERROR);
! 151: }
! 152: msg = NULL;
! 153: msglen = 0;
1.12 nicm 154:
1.18 ! nicm 155: used = 0;
! 156: while (used != pb->size) {
! 157: start = pb->data + used;
! 158: end = memchr(start, '\n', pb->size - used);
! 159: if (end != NULL)
! 160: size = end - start;
1.7 nicm 161: else
1.18 ! nicm 162: size = pb->size - used;
! 163:
! 164: msglen = size * 4 + 1;
! 165: msg = xrealloc(msg, 1, msglen);
! 166:
! 167: strvisx(msg, start, size, VIS_OCTAL|VIS_TAB);
! 168: ctx->print(ctx, "%s", msg);
! 169:
! 170: used += size + (end != NULL);
1.1 nicm 171: }
172:
1.18 ! nicm 173: free(msg);
1.16 nicm 174: return (CMD_RETURN_NORMAL);
1.1 nicm 175: }
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