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1 | #include "cache.h" |
2 | #include "remote.h" | |
3 | #include "strbuf.h" | |
4 | #include "url.h" | |
5 | #include "exec_cmd.h" | |
6 | #include "run-command.h" | |
7 | #include "vcs-svn/svndump.h" | |
8 | #include "notes.h" | |
9 | #include "argv-array.h" | |
10 | ||
11 | static const char *url; | |
12 | static const char *private_ref; | |
13 | static const char *remote_ref = "refs/heads/master"; | |
14 | ||
15 | static int cmd_capabilities(const char *line); | |
16 | static int cmd_import(const char *line); | |
17 | static int cmd_list(const char *line); | |
18 | ||
19 | typedef int (*input_command_handler)(const char *); | |
20 | struct input_command_entry { | |
21 | const char *name; | |
22 | input_command_handler fn; | |
23 | unsigned char batchable; /* whether the command starts or is part of a batch */ | |
24 | }; | |
25 | ||
26 | static const struct input_command_entry input_command_list[] = { | |
27 | { "capabilities", cmd_capabilities, 0 }, | |
28 | { "import", cmd_import, 1 }, | |
29 | { "list", cmd_list, 0 }, | |
30 | { NULL, NULL } | |
31 | }; | |
32 | ||
33 | static int cmd_capabilities(const char *line) | |
34 | { | |
35 | printf("import\n"); | |
36 | printf("bidi-import\n"); | |
37 | printf("refspec %s:%s\n\n", remote_ref, private_ref); | |
38 | fflush(stdout); | |
39 | return 0; | |
40 | } | |
41 | ||
42 | static void terminate_batch(void) | |
43 | { | |
44 | /* terminate a current batch's fast-import stream */ | |
45 | printf("done\n"); | |
46 | fflush(stdout); | |
47 | } | |
48 | ||
49 | static int cmd_import(const char *line) | |
50 | { | |
51 | int code; | |
52 | int dumpin_fd; | |
53 | unsigned int startrev = 0; | |
54 | struct argv_array svndump_argv = ARGV_ARRAY_INIT; | |
55 | struct child_process svndump_proc; | |
56 | ||
57 | memset(&svndump_proc, 0, sizeof(struct child_process)); | |
58 | svndump_proc.out = -1; | |
59 | argv_array_push(&svndump_argv, "svnrdump"); | |
60 | argv_array_push(&svndump_argv, "dump"); | |
61 | argv_array_push(&svndump_argv, url); | |
62 | argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev); | |
63 | svndump_proc.argv = svndump_argv.argv; | |
64 | ||
65 | code = start_command(&svndump_proc); | |
66 | if (code) | |
67 | die("Unable to start %s, code %d", svndump_proc.argv[0], code); | |
68 | dumpin_fd = svndump_proc.out; | |
69 | ||
70 | svndump_init_fd(dumpin_fd, STDIN_FILENO); | |
71 | svndump_read(url, private_ref); | |
72 | svndump_deinit(); | |
73 | svndump_reset(); | |
74 | ||
75 | close(dumpin_fd); | |
76 | code = finish_command(&svndump_proc); | |
77 | if (code) | |
78 | warning("%s, returned %d", svndump_proc.argv[0], code); | |
79 | argv_array_clear(&svndump_argv); | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
84 | static int cmd_list(const char *line) | |
85 | { | |
86 | printf("? %s\n\n", remote_ref); | |
87 | fflush(stdout); | |
88 | return 0; | |
89 | } | |
90 | ||
91 | static int do_command(struct strbuf *line) | |
92 | { | |
93 | const struct input_command_entry *p = input_command_list; | |
94 | static struct string_list batchlines = STRING_LIST_INIT_DUP; | |
95 | static const struct input_command_entry *batch_cmd; | |
96 | /* | |
97 | * commands can be grouped together in a batch. | |
98 | * Batches are ended by \n. If no batch is active the program ends. | |
99 | * During a batch all lines are buffered and passed to the handler function | |
100 | * when the batch is terminated. | |
101 | */ | |
102 | if (line->len == 0) { | |
103 | if (batch_cmd) { | |
104 | struct string_list_item *item; | |
105 | for_each_string_list_item(item, &batchlines) | |
106 | batch_cmd->fn(item->string); | |
107 | terminate_batch(); | |
108 | batch_cmd = NULL; | |
109 | string_list_clear(&batchlines, 0); | |
110 | return 0; /* end of the batch, continue reading other commands. */ | |
111 | } | |
112 | return 1; /* end of command stream, quit */ | |
113 | } | |
114 | if (batch_cmd) { | |
115 | if (prefixcmp(batch_cmd->name, line->buf)) | |
116 | die("Active %s batch interrupted by %s", batch_cmd->name, line->buf); | |
117 | /* buffer batch lines */ | |
118 | string_list_append(&batchlines, line->buf); | |
119 | return 0; | |
120 | } | |
121 | ||
122 | for (p = input_command_list; p->name; p++) { | |
123 | if (!prefixcmp(line->buf, p->name) && (strlen(p->name) == line->len || | |
124 | line->buf[strlen(p->name)] == ' ')) { | |
125 | if (p->batchable) { | |
126 | batch_cmd = p; | |
127 | string_list_append(&batchlines, line->buf); | |
128 | return 0; | |
129 | } | |
130 | return p->fn(line->buf); | |
131 | } | |
132 | } | |
133 | die("Unknown command '%s'\n", line->buf); | |
134 | return 0; | |
135 | } | |
136 | ||
137 | int main(int argc, const char **argv) | |
138 | { | |
139 | struct strbuf buf = STRBUF_INIT, url_sb = STRBUF_INIT, | |
140 | private_ref_sb = STRBUF_INIT; | |
141 | static struct remote *remote; | |
142 | const char *url_in; | |
143 | ||
144 | git_extract_argv0_path(argv[0]); | |
145 | setup_git_directory(); | |
146 | if (argc < 2 || argc > 3) { | |
147 | usage("git-remote-svn <remote-name> [<url>]"); | |
148 | return 1; | |
149 | } | |
150 | ||
151 | remote = remote_get(argv[1]); | |
152 | url_in = (argc == 3) ? argv[2] : remote->url[0]; | |
153 | ||
154 | end_url_with_slash(&url_sb, url_in); | |
155 | url = url_sb.buf; | |
156 | ||
157 | strbuf_addf(&private_ref_sb, "refs/svn/%s/master", remote->name); | |
158 | private_ref = private_ref_sb.buf; | |
159 | ||
160 | while (1) { | |
161 | if (strbuf_getline(&buf, stdin, '\n') == EOF) { | |
162 | if (ferror(stdin)) | |
163 | die("Error reading command stream"); | |
164 | else | |
165 | die("Unexpected end of command stream"); | |
166 | } | |
167 | if (do_command(&buf)) | |
168 | break; | |
169 | strbuf_reset(&buf); | |
170 | } | |
171 | ||
172 | strbuf_release(&buf); | |
173 | strbuf_release(&url_sb); | |
174 | strbuf_release(&private_ref_sb); | |
175 | return 0; | |
176 | } |