1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* GIT - The information manager from hell
*
* Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
* Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
* Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
* Copyright (C) 2006 Mike McCormack
* Copyright (C) 2006 Christian Couder
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "cache.h"
#include "quote.h"
/* Get a trace file descriptor from "key" env variable. */
static int get_trace_fd(const char *key, int *need_close)
{
char *trace = getenv(key);
if (!trace || !strcmp(trace, "") ||
!strcmp(trace, "0") || !strcasecmp(trace, "false"))
return 0;
if (!strcmp(trace, "1") || !strcasecmp(trace, "true"))
return STDERR_FILENO;
if (strlen(trace) == 1 && isdigit(*trace))
return atoi(trace);
if (is_absolute_path(trace)) {
int fd = open(trace, O_WRONLY | O_APPEND | O_CREAT, 0666);
if (fd == -1) {
fprintf(stderr,
"Could not open '%s' for tracing: %s\n"
"Defaulting to tracing on stderr...\n",
trace, strerror(errno));
return STDERR_FILENO;
}
*need_close = 1;
return fd;
}
fprintf(stderr, "What does '%s' for %s mean?\n", trace, key);
fprintf(stderr, "If you want to trace into a file, "
"then please set %s to an absolute pathname "
"(starting with /).\n", key);
fprintf(stderr, "Defaulting to tracing on stderr...\n");
return STDERR_FILENO;
}
static const char err_msg[] = "Could not trace into fd given by "
"GIT_TRACE environment variable";
void trace_vprintf(const char *key, const char *fmt, va_list ap)
{
struct strbuf buf = STRBUF_INIT;
if (!trace_want(key))
return;
set_try_to_free_routine(NULL); /* is never reset */
strbuf_vaddf(&buf, fmt, ap);
trace_strbuf(key, &buf);
strbuf_release(&buf);
}
void trace_printf_key(const char *key, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
trace_vprintf(key, fmt, ap);
va_end(ap);
}
void trace_printf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
trace_vprintf("GIT_TRACE", fmt, ap);
va_end(ap);
}
void trace_strbuf(const char *key, const struct strbuf *buf)
{
int fd, need_close = 0;
fd = get_trace_fd(key, &need_close);
if (!fd)
return;
write_or_whine_pipe(fd, buf->buf, buf->len, err_msg);
if (need_close)
close(fd);
}
void trace_argv_printf(const char **argv, const char *fmt, ...)
{
struct strbuf buf = STRBUF_INIT;
va_list ap;
int fd, need_close = 0;
fd = get_trace_fd("GIT_TRACE", &need_close);
if (!fd)
return;
set_try_to_free_routine(NULL); /* is never reset */
va_start(ap, fmt);
strbuf_vaddf(&buf, fmt, ap);
va_end(ap);
sq_quote_argv(&buf, argv, 0);
strbuf_addch(&buf, '\n');
write_or_whine_pipe(fd, buf.buf, buf.len, err_msg);
strbuf_release(&buf);
if (need_close)
close(fd);
}
static const char *quote_crnl(const char *path)
{
static char new_path[PATH_MAX];
const char *p2 = path;
char *p1 = new_path;
if (!path)
return NULL;
while (*p2) {
switch (*p2) {
case '\\': *p1++ = '\\'; *p1++ = '\\'; break;
case '\n': *p1++ = '\\'; *p1++ = 'n'; break;
case '\r': *p1++ = '\\'; *p1++ = 'r'; break;
default:
*p1++ = *p2;
}
p2++;
}
*p1 = '\0';
return new_path;
}
/* FIXME: move prefix to startup_info struct and get rid of this arg */
void trace_repo_setup(const char *prefix)
{
static const char *key = "GIT_TRACE_SETUP";
const char *git_work_tree;
char cwd[PATH_MAX];
if (!trace_want(key))
return;
if (!getcwd(cwd, PATH_MAX))
die("Unable to get current working directory");
if (!(git_work_tree = get_git_work_tree()))
git_work_tree = "(null)";
if (!prefix)
prefix = "(null)";
trace_printf_key(key, "setup: git_dir: %s\n", quote_crnl(get_git_dir()));
trace_printf_key(key, "setup: worktree: %s\n", quote_crnl(git_work_tree));
trace_printf_key(key, "setup: cwd: %s\n", quote_crnl(cwd));
trace_printf_key(key, "setup: prefix: %s\n", quote_crnl(prefix));
}
int trace_want(const char *key)
{
const char *trace = getenv(key);
if (!trace || !strcmp(trace, "") ||
!strcmp(trace, "0") || !strcasecmp(trace, "false"))
return 0;
return 1;
}
|
