2 * GIT - The information manager from hell
4 * Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
5 * Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
6 * Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
7 * Copyright (C) 2006 Mike McCormack
8 * Copyright (C) 2006 Christian Couder
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 /* Get a trace file descriptor from "key" env variable. */
29 static int get_trace_fd(const char *key
, int *need_close
)
31 char *trace
= getenv(key
);
33 if (!trace
|| !strcmp(trace
, "") ||
34 !strcmp(trace
, "0") || !strcasecmp(trace
, "false"))
36 if (!strcmp(trace
, "1") || !strcasecmp(trace
, "true"))
38 if (strlen(trace
) == 1 && isdigit(*trace
))
40 if (is_absolute_path(trace
)) {
41 int fd
= open(trace
, O_WRONLY
| O_APPEND
| O_CREAT
, 0666);
44 "Could not open '%s' for tracing: %s\n"
45 "Defaulting to tracing on stderr...\n",
46 trace
, strerror(errno
));
53 fprintf(stderr
, "What does '%s' for %s mean?\n", trace
, key
);
54 fprintf(stderr
, "If you want to trace into a file, "
55 "then please set %s to an absolute pathname "
56 "(starting with /).\n", key
);
57 fprintf(stderr
, "Defaulting to tracing on stderr...\n");
62 static const char err_msg
[] = "Could not trace into fd given by "
63 "GIT_TRACE environment variable";
65 void trace_vprintf(const char *key
, const char *fmt
, va_list ap
)
67 struct strbuf buf
= STRBUF_INIT
;
72 set_try_to_free_routine(NULL
); /* is never reset */
73 strbuf_vaddf(&buf
, fmt
, ap
);
74 trace_strbuf(key
, &buf
);
78 void trace_printf_key(const char *key
, const char *fmt
, ...)
82 trace_vprintf(key
, fmt
, ap
);
86 void trace_printf(const char *fmt
, ...)
90 trace_vprintf("GIT_TRACE", fmt
, ap
);
94 void trace_strbuf(const char *key
, const struct strbuf
*buf
)
96 int fd
, need_close
= 0;
98 fd
= get_trace_fd(key
, &need_close
);
102 write_or_whine_pipe(fd
, buf
->buf
, buf
->len
, err_msg
);
108 void trace_argv_printf(const char **argv
, const char *fmt
, ...)
110 struct strbuf buf
= STRBUF_INIT
;
112 int fd
, need_close
= 0;
114 fd
= get_trace_fd("GIT_TRACE", &need_close
);
118 set_try_to_free_routine(NULL
); /* is never reset */
120 strbuf_vaddf(&buf
, fmt
, ap
);
123 sq_quote_argv(&buf
, argv
, 0);
124 strbuf_addch(&buf
, '\n');
125 write_or_whine_pipe(fd
, buf
.buf
, buf
.len
, err_msg
);
126 strbuf_release(&buf
);
132 static const char *quote_crnl(const char *path
)
134 static char new_path
[PATH_MAX
];
135 const char *p2
= path
;
143 case '\\': *p1
++ = '\\'; *p1
++ = '\\'; break;
144 case '\n': *p1
++ = '\\'; *p1
++ = 'n'; break;
145 case '\r': *p1
++ = '\\'; *p1
++ = 'r'; break;
155 /* FIXME: move prefix to startup_info struct and get rid of this arg */
156 void trace_repo_setup(const char *prefix
)
158 const char *git_work_tree
;
161 if (!trace_want("GIT_TRACE"))
164 if (!getcwd(cwd
, PATH_MAX
))
165 die("Unable to get current working directory");
167 if (!(git_work_tree
= get_git_work_tree()))
168 git_work_tree
= "(null)";
173 trace_printf("setup: git_dir: %s\n", quote_crnl(get_git_dir()));
174 trace_printf("setup: worktree: %s\n", quote_crnl(git_work_tree
));
175 trace_printf("setup: cwd: %s\n", quote_crnl(cwd
));
176 trace_printf("setup: prefix: %s\n", quote_crnl(prefix
));
179 int trace_want(const char *key
)
181 const char *trace
= getenv(key
);
183 if (!trace
|| !strcmp(trace
, "") ||
184 !strcmp(trace
, "0") || !strcasecmp(trace
, "false"))