builtin-push: don't pass --thin to HTTP transport
[git/git.git] / git.c
CommitLineData
8e49d503 1#include <stdio.h>
7dbc2c04
JH
2#include <sys/types.h>
3#include <sys/stat.h>
4#include <dirent.h>
8e49d503
AE
5#include <unistd.h>
6#include <stdlib.h>
7#include <string.h>
8#include <errno.h>
9#include <limits.h>
10#include <stdarg.h>
4050c0df 11#include "git-compat-util.h"
77cb17e9 12#include "exec_cmd.h"
8e49d503 13
70827b15 14#include "builtin.h"
8e49d503
AE
15
16static void prepend_to_path(const char *dir, int len)
17{
18 char *path, *old_path = getenv("PATH");
19 int path_len = len;
20
21 if (!old_path)
7dbc2c04 22 old_path = "/usr/local/bin:/usr/bin:/bin";
8e49d503
AE
23
24 path_len = len + strlen(old_path) + 1;
25
26 path = malloc(path_len + 1);
8e49d503
AE
27
28 memcpy(path, dir, len);
29 path[len] = ':';
30 memcpy(path + len + 1, old_path, path_len - len);
31
32 setenv("PATH", path, 1);
33}
34
70827b15 35const char git_version_string[] = GIT_VERSION;
5b84f4d8 36
9201c707 37static void handle_internal_command(int argc, const char **argv, char **envp)
231af832
LT
38{
39 const char *cmd = argv[0];
40 static struct cmd_struct {
41 const char *cmd;
9201c707 42 int (*fn)(int, const char **, char **);
231af832
LT
43 } commands[] = {
44 { "version", cmd_version },
45 { "help", cmd_help },
70b006b9 46 { "log", cmd_log },
70827b15 47 { "whatchanged", cmd_whatchanged },
ba1d4505 48 { "show", cmd_show },
755225de 49 { "push", cmd_push },
68563738 50 { "format-patch", cmd_format_patch },
c7432087 51 { "count-objects", cmd_count_objects },
8ab99476 52 { "diff", cmd_diff },
5010cb5f 53 { "grep", cmd_grep },
d9b814cc 54 { "rm", cmd_rm },
0d781539 55 { "add", cmd_add },
5fb61b8d 56 { "rev-list", cmd_rev_list },
c3c8835f 57 { "init-db", cmd_init_db },
21754264
JH
58 { "tar-tree", cmd_tar_tree },
59 { "upload-tar", cmd_upload_tar },
0864f264 60 { "check-ref-format", cmd_check_ref_format },
aae01bda 61 { "ls-files", cmd_ls_files },
56d1398a 62 { "ls-tree", cmd_ls_tree },
d147e501 63 { "tar-tree", cmd_tar_tree },
6d96ac18 64 { "read-tree", cmd_read_tree },
ac6245e3 65 { "commit-tree", cmd_commit_tree },
51ce34b9 66 { "apply", cmd_apply },
e8cc9cd9
PE
67 { "show-branch", cmd_show_branch },
68 { "diff-files", cmd_diff_files },
69 { "diff-index", cmd_diff_index },
70 { "diff-stages", cmd_diff_stages },
f81daefe 71 { "diff-tree", cmd_diff_tree },
895f10c3
CC
72 { "cat-file", cmd_cat_file },
73 { "rev-parse", cmd_rev_parse }
231af832
LT
74 };
75 int i;
76
1cd95087
LT
77 /* Turn "git cmd --help" into "git help cmd" */
78 if (argc > 1 && !strcmp(argv[1], "--help")) {
79 argv[1] = argv[0];
80 argv[0] = cmd = "help";
81 }
82
231af832
LT
83 for (i = 0; i < ARRAY_SIZE(commands); i++) {
84 struct cmd_struct *p = commands+i;
85 if (strcmp(p->cmd, cmd))
86 continue;
87 exit(p->fn(argc, argv, envp));
88 }
89}
90
9201c707 91int main(int argc, const char **argv, char **envp)
8e49d503 92{
9201c707 93 const char *cmd = argv[0];
231af832 94 char *slash = strrchr(cmd, '/');
8e49d503 95 char git_command[PATH_MAX + 1];
231af832
LT
96 const char *exec_path = NULL;
97
98 /*
99 * Take the basename of argv[0] as the command
100 * name, and the dirname as the default exec_path
101 * if it's an absolute path and we don't have
102 * anything better.
103 */
104 if (slash) {
105 *slash++ = 0;
106 if (*cmd == '/')
107 exec_path = cmd;
108 cmd = slash;
109 }
8e49d503 110
231af832
LT
111 /*
112 * "git-xxxx" is the same as "git xxxx", but we obviously:
113 *
114 * - cannot take flags in between the "git" and the "xxxx".
115 * - cannot execute it externally (since it would just do
116 * the same thing over again)
117 *
118 * So we just directly call the internal command handler, and
119 * die if that one cannot handle it.
120 */
121 if (!strncmp(cmd, "git-", 4)) {
122 cmd += 4;
123 argv[0] = cmd;
124 handle_internal_command(argc, argv, envp);
125 die("cannot handle %s internally", cmd);
126 }
8e49d503 127
231af832
LT
128 /* Default command: "help" */
129 cmd = "help";
8e49d503 130
231af832
LT
131 /* Look for flags.. */
132 while (argc > 1) {
133 cmd = *++argv;
134 argc--;
da6bf70e 135
231af832 136 if (strncmp(cmd, "--", 2))
8e49d503
AE
137 break;
138
231af832
LT
139 cmd += 2;
140
141 /*
142 * For legacy reasons, the "version" and "help"
143 * commands can be written with "--" prepended
144 * to make them look like flags.
145 */
146 if (!strcmp(cmd, "help"))
147 break;
148 if (!strcmp(cmd, "version"))
149 break;
8e49d503 150
231af832
LT
151 /*
152 * Check remaining flags (which by now must be
153 * "--exec-path", but maybe we will accept
154 * other arguments some day)
155 */
156 if (!strncmp(cmd, "exec-path", 9)) {
157 cmd += 9;
158 if (*cmd == '=') {
159 git_set_exec_path(cmd + 1);
160 continue;
8e49d503 161 }
231af832 162 puts(git_exec_path());
8e49d503
AE
163 exit(0);
164 }
a87cd02c 165 cmd_usage(0, NULL, NULL);
97fc6c5f 166 }
231af832
LT
167 argv[0] = cmd;
168
169 /*
170 * We search for git commands in the following order:
171 * - git_exec_path()
172 * - the path of the "git" command if we could find it
173 * in $0
174 * - the regular PATH.
175 */
176 if (exec_path)
177 prepend_to_path(exec_path, strlen(exec_path));
77cb17e9
MO
178 exec_path = git_exec_path();
179 prepend_to_path(exec_path, strlen(exec_path));
8e49d503 180
231af832
LT
181 /* See if it's an internal command */
182 handle_internal_command(argc, argv, envp);
183
184 /* .. then try the external ones */
185 execv_git_cmd(argv);
10b15b86
AR
186
187 if (errno == ENOENT)
a87cd02c 188 cmd_usage(0, exec_path, "'%s' is not a git-command", cmd);
10b15b86
AR
189
190 fprintf(stderr, "Failed to run command '%s': %s\n",
191 git_command, strerror(errno));
8e49d503
AE
192
193 return 1;
194}