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6ce4e61f CC |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
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 | |
9 | * | |
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. | |
14 | * | |
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. | |
19 | * | |
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 | |
23 | */ | |
24 | ||
25 | #include "cache.h" | |
26 | #include "quote.h" | |
27 | ||
6ce4e61f CC |
28 | /* Get a trace file descriptor from GIT_TRACE env variable. */ |
29 | static int get_trace_fd(int *need_close) | |
30 | { | |
31 | char *trace = getenv("GIT_TRACE"); | |
32 | ||
6844fc80 CC |
33 | if (!trace || !strcmp(trace, "") || |
34 | !strcmp(trace, "0") || !strcasecmp(trace, "false")) | |
6ce4e61f CC |
35 | return 0; |
36 | if (!strcmp(trace, "1") || !strcasecmp(trace, "true")) | |
37 | return STDERR_FILENO; | |
38 | if (strlen(trace) == 1 && isdigit(*trace)) | |
39 | return atoi(trace); | |
ecf4831d | 40 | if (is_absolute_path(trace)) { |
6ce4e61f CC |
41 | int fd = open(trace, O_WRONLY | O_APPEND | O_CREAT, 0666); |
42 | if (fd == -1) { | |
43 | fprintf(stderr, | |
44 | "Could not open '%s' for tracing: %s\n" | |
45 | "Defaulting to tracing on stderr...\n", | |
46 | trace, strerror(errno)); | |
47 | return STDERR_FILENO; | |
48 | } | |
49 | *need_close = 1; | |
50 | return fd; | |
51 | } | |
52 | ||
a8fdab08 | 53 | fprintf(stderr, "What does '%s' for GIT_TRACE mean?\n", trace); |
6ce4e61f CC |
54 | fprintf(stderr, "If you want to trace into a file, " |
55 | "then please set GIT_TRACE to an absolute pathname " | |
56 | "(starting with /).\n"); | |
57 | fprintf(stderr, "Defaulting to tracing on stderr...\n"); | |
58 | ||
59 | return STDERR_FILENO; | |
60 | } | |
61 | ||
62 | static const char err_msg[] = "Could not trace into fd given by " | |
63 | "GIT_TRACE environment variable"; | |
64 | ||
19247e55 | 65 | void trace_printf(const char *fmt, ...) |
6ce4e61f | 66 | { |
ebeb6090 | 67 | struct strbuf buf = STRBUF_INIT; |
19247e55 | 68 | va_list ap; |
ebeb6090 | 69 | int fd, need_close = 0; |
6ce4e61f | 70 | |
19247e55 | 71 | fd = get_trace_fd(&need_close); |
6ce4e61f CC |
72 | if (!fd) |
73 | return; | |
74 | ||
00b0d7f7 | 75 | set_try_to_free_routine(NULL); /* is never reset */ |
19247e55 | 76 | va_start(ap, fmt); |
ebeb6090 | 77 | strbuf_vaddf(&buf, fmt, ap); |
19247e55 | 78 | va_end(ap); |
7a33bcbe PH |
79 | |
80 | write_or_whine_pipe(fd, buf.buf, buf.len, err_msg); | |
81 | strbuf_release(&buf); | |
6ce4e61f CC |
82 | |
83 | if (need_close) | |
84 | close(fd); | |
85 | } | |
86 | ||
b319ce4c | 87 | void trace_argv_printf(const char **argv, const char *fmt, ...) |
6ce4e61f | 88 | { |
ebeb6090 | 89 | struct strbuf buf = STRBUF_INIT; |
19247e55 | 90 | va_list ap; |
ebeb6090 | 91 | int fd, need_close = 0; |
6ce4e61f | 92 | |
19247e55 | 93 | fd = get_trace_fd(&need_close); |
6ce4e61f CC |
94 | if (!fd) |
95 | return; | |
96 | ||
00b0d7f7 | 97 | set_try_to_free_routine(NULL); /* is never reset */ |
19247e55 | 98 | va_start(ap, fmt); |
ebeb6090 | 99 | strbuf_vaddf(&buf, fmt, ap); |
19247e55 | 100 | va_end(ap); |
6ce4e61f | 101 | |
b319ce4c | 102 | sq_quote_argv(&buf, argv, 0); |
7a33bcbe PH |
103 | strbuf_addch(&buf, '\n'); |
104 | write_or_whine_pipe(fd, buf.buf, buf.len, err_msg); | |
105 | strbuf_release(&buf); | |
6ce4e61f CC |
106 | |
107 | if (need_close) | |
108 | close(fd); | |
109 | } | |
a9ca8a85 NTND |
110 | |
111 | static const char *quote_crnl(const char *path) | |
112 | { | |
113 | static char new_path[PATH_MAX]; | |
114 | const char *p2 = path; | |
115 | char *p1 = new_path; | |
116 | ||
117 | if (!path) | |
118 | return NULL; | |
119 | ||
120 | while (*p2) { | |
121 | switch (*p2) { | |
122 | case '\\': *p1++ = '\\'; *p1++ = '\\'; break; | |
123 | case '\n': *p1++ = '\\'; *p1++ = 'n'; break; | |
124 | case '\r': *p1++ = '\\'; *p1++ = 'r'; break; | |
125 | default: | |
126 | *p1++ = *p2; | |
127 | } | |
128 | p2++; | |
129 | } | |
130 | *p1 = '\0'; | |
131 | return new_path; | |
132 | } | |
133 | ||
134 | /* FIXME: move prefix to startup_info struct and get rid of this arg */ | |
135 | void trace_repo_setup(const char *prefix) | |
136 | { | |
e83c267f | 137 | const char *git_work_tree; |
a9ca8a85 NTND |
138 | char cwd[PATH_MAX]; |
139 | char *trace = getenv("GIT_TRACE"); | |
140 | ||
141 | if (!trace || !strcmp(trace, "") || | |
142 | !strcmp(trace, "0") || !strcasecmp(trace, "false")) | |
143 | return; | |
144 | ||
145 | if (!getcwd(cwd, PATH_MAX)) | |
146 | die("Unable to get current working directory"); | |
147 | ||
e83c267f BC |
148 | if (!(git_work_tree = get_git_work_tree())) |
149 | git_work_tree = "(null)"; | |
150 | ||
151 | if (!prefix) | |
152 | prefix = "(null)"; | |
153 | ||
a9ca8a85 | 154 | trace_printf("setup: git_dir: %s\n", quote_crnl(get_git_dir())); |
e83c267f | 155 | trace_printf("setup: worktree: %s\n", quote_crnl(git_work_tree)); |
a9ca8a85 NTND |
156 | trace_printf("setup: cwd: %s\n", quote_crnl(cwd)); |
157 | trace_printf("setup: prefix: %s\n", quote_crnl(prefix)); | |
158 | } |