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68f64ff8 FA |
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; | |
f6529de9 | 12 | static int dump_from_file; |
68f64ff8 FA |
13 | static const char *private_ref; |
14 | static const char *remote_ref = "refs/heads/master"; | |
15 | ||
16 | static int cmd_capabilities(const char *line); | |
17 | static int cmd_import(const char *line); | |
18 | static int cmd_list(const char *line); | |
19 | ||
20 | typedef int (*input_command_handler)(const char *); | |
21 | struct input_command_entry { | |
22 | const char *name; | |
23 | input_command_handler fn; | |
24 | unsigned char batchable; /* whether the command starts or is part of a batch */ | |
25 | }; | |
26 | ||
27 | static const struct input_command_entry input_command_list[] = { | |
28 | { "capabilities", cmd_capabilities, 0 }, | |
29 | { "import", cmd_import, 1 }, | |
30 | { "list", cmd_list, 0 }, | |
31 | { NULL, NULL } | |
32 | }; | |
33 | ||
34 | static int cmd_capabilities(const char *line) | |
35 | { | |
36 | printf("import\n"); | |
37 | printf("bidi-import\n"); | |
38 | printf("refspec %s:%s\n\n", remote_ref, private_ref); | |
39 | fflush(stdout); | |
40 | return 0; | |
41 | } | |
42 | ||
43 | static void terminate_batch(void) | |
44 | { | |
45 | /* terminate a current batch's fast-import stream */ | |
46 | printf("done\n"); | |
47 | fflush(stdout); | |
48 | } | |
49 | ||
50 | static int cmd_import(const char *line) | |
51 | { | |
52 | int code; | |
53 | int dumpin_fd; | |
54 | unsigned int startrev = 0; | |
55 | struct argv_array svndump_argv = ARGV_ARRAY_INIT; | |
56 | struct child_process svndump_proc; | |
57 | ||
f6529de9 FA |
58 | if (dump_from_file) { |
59 | dumpin_fd = open(url, O_RDONLY); | |
60 | if(dumpin_fd < 0) | |
61 | die_errno("Couldn't open svn dump file %s.", url); | |
62 | } else { | |
63 | memset(&svndump_proc, 0, sizeof(struct child_process)); | |
64 | svndump_proc.out = -1; | |
65 | argv_array_push(&svndump_argv, "svnrdump"); | |
66 | argv_array_push(&svndump_argv, "dump"); | |
67 | argv_array_push(&svndump_argv, url); | |
68 | argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev); | |
69 | svndump_proc.argv = svndump_argv.argv; | |
70 | ||
71 | code = start_command(&svndump_proc); | |
72 | if (code) | |
73 | die("Unable to start %s, code %d", svndump_proc.argv[0], code); | |
74 | dumpin_fd = svndump_proc.out; | |
75 | } | |
68f64ff8 FA |
76 | svndump_init_fd(dumpin_fd, STDIN_FILENO); |
77 | svndump_read(url, private_ref); | |
78 | svndump_deinit(); | |
79 | svndump_reset(); | |
80 | ||
81 | close(dumpin_fd); | |
f6529de9 FA |
82 | if (!dump_from_file) { |
83 | code = finish_command(&svndump_proc); | |
84 | if (code) | |
85 | warning("%s, returned %d", svndump_proc.argv[0], code); | |
86 | argv_array_clear(&svndump_argv); | |
87 | } | |
68f64ff8 FA |
88 | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static int cmd_list(const char *line) | |
93 | { | |
94 | printf("? %s\n\n", remote_ref); | |
95 | fflush(stdout); | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static int do_command(struct strbuf *line) | |
100 | { | |
101 | const struct input_command_entry *p = input_command_list; | |
102 | static struct string_list batchlines = STRING_LIST_INIT_DUP; | |
103 | static const struct input_command_entry *batch_cmd; | |
104 | /* | |
105 | * commands can be grouped together in a batch. | |
106 | * Batches are ended by \n. If no batch is active the program ends. | |
107 | * During a batch all lines are buffered and passed to the handler function | |
108 | * when the batch is terminated. | |
109 | */ | |
110 | if (line->len == 0) { | |
111 | if (batch_cmd) { | |
112 | struct string_list_item *item; | |
113 | for_each_string_list_item(item, &batchlines) | |
114 | batch_cmd->fn(item->string); | |
115 | terminate_batch(); | |
116 | batch_cmd = NULL; | |
117 | string_list_clear(&batchlines, 0); | |
118 | return 0; /* end of the batch, continue reading other commands. */ | |
119 | } | |
120 | return 1; /* end of command stream, quit */ | |
121 | } | |
122 | if (batch_cmd) { | |
123 | if (prefixcmp(batch_cmd->name, line->buf)) | |
124 | die("Active %s batch interrupted by %s", batch_cmd->name, line->buf); | |
125 | /* buffer batch lines */ | |
126 | string_list_append(&batchlines, line->buf); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | for (p = input_command_list; p->name; p++) { | |
131 | if (!prefixcmp(line->buf, p->name) && (strlen(p->name) == line->len || | |
132 | line->buf[strlen(p->name)] == ' ')) { | |
133 | if (p->batchable) { | |
134 | batch_cmd = p; | |
135 | string_list_append(&batchlines, line->buf); | |
136 | return 0; | |
137 | } | |
138 | return p->fn(line->buf); | |
139 | } | |
140 | } | |
141 | die("Unknown command '%s'\n", line->buf); | |
142 | return 0; | |
143 | } | |
144 | ||
145 | int main(int argc, const char **argv) | |
146 | { | |
147 | struct strbuf buf = STRBUF_INIT, url_sb = STRBUF_INIT, | |
148 | private_ref_sb = STRBUF_INIT; | |
149 | static struct remote *remote; | |
150 | const char *url_in; | |
151 | ||
152 | git_extract_argv0_path(argv[0]); | |
153 | setup_git_directory(); | |
154 | if (argc < 2 || argc > 3) { | |
155 | usage("git-remote-svn <remote-name> [<url>]"); | |
156 | return 1; | |
157 | } | |
158 | ||
159 | remote = remote_get(argv[1]); | |
160 | url_in = (argc == 3) ? argv[2] : remote->url[0]; | |
161 | ||
f6529de9 FA |
162 | if (!prefixcmp(url_in, "file://")) { |
163 | dump_from_file = 1; | |
164 | url = url_decode(url_in + sizeof("file://")-1); | |
165 | } else { | |
166 | dump_from_file = 0; | |
167 | end_url_with_slash(&url_sb, url_in); | |
168 | url = url_sb.buf; | |
169 | } | |
68f64ff8 FA |
170 | |
171 | strbuf_addf(&private_ref_sb, "refs/svn/%s/master", remote->name); | |
172 | private_ref = private_ref_sb.buf; | |
173 | ||
174 | while (1) { | |
175 | if (strbuf_getline(&buf, stdin, '\n') == EOF) { | |
176 | if (ferror(stdin)) | |
177 | die("Error reading command stream"); | |
178 | else | |
179 | die("Unexpected end of command stream"); | |
180 | } | |
181 | if (do_command(&buf)) | |
182 | break; | |
183 | strbuf_reset(&buf); | |
184 | } | |
185 | ||
186 | strbuf_release(&buf); | |
187 | strbuf_release(&url_sb); | |
188 | strbuf_release(&private_ref_sb); | |
189 | return 0; | |
190 | } |