remote-svn: Activate import/export-marks for fast-import
[git/git.git] / remote-testsvn.c
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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
11static const char *url;
f6529de9 12static int dump_from_file;
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13static const char *private_ref;
14static const char *remote_ref = "refs/heads/master";
8d7cd8eb 15static const char *marksfilename;
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16
17static int cmd_capabilities(const char *line);
18static int cmd_import(const char *line);
19static int cmd_list(const char *line);
20
21typedef int (*input_command_handler)(const char *);
22struct input_command_entry {
23 const char *name;
24 input_command_handler fn;
25 unsigned char batchable; /* whether the command starts or is part of a batch */
26};
27
28static const struct input_command_entry input_command_list[] = {
29 { "capabilities", cmd_capabilities, 0 },
30 { "import", cmd_import, 1 },
31 { "list", cmd_list, 0 },
32 { NULL, NULL }
33};
34
35static int cmd_capabilities(const char *line)
36{
37 printf("import\n");
38 printf("bidi-import\n");
39 printf("refspec %s:%s\n\n", remote_ref, private_ref);
40 fflush(stdout);
41 return 0;
42}
43
44static void terminate_batch(void)
45{
46 /* terminate a current batch's fast-import stream */
47 printf("done\n");
48 fflush(stdout);
49}
50
51static int cmd_import(const char *line)
52{
53 int code;
54 int dumpin_fd;
55 unsigned int startrev = 0;
56 struct argv_array svndump_argv = ARGV_ARRAY_INIT;
57 struct child_process svndump_proc;
58
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59 if (dump_from_file) {
60 dumpin_fd = open(url, O_RDONLY);
61 if(dumpin_fd < 0)
62 die_errno("Couldn't open svn dump file %s.", url);
63 } else {
64 memset(&svndump_proc, 0, sizeof(struct child_process));
65 svndump_proc.out = -1;
66 argv_array_push(&svndump_argv, "svnrdump");
67 argv_array_push(&svndump_argv, "dump");
68 argv_array_push(&svndump_argv, url);
69 argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev);
70 svndump_proc.argv = svndump_argv.argv;
71
72 code = start_command(&svndump_proc);
73 if (code)
74 die("Unable to start %s, code %d", svndump_proc.argv[0], code);
75 dumpin_fd = svndump_proc.out;
76 }
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77 /* setup marks file import/export */
78 printf("feature import-marks-if-exists=%s\n"
79 "feature export-marks=%s\n", marksfilename, marksfilename);
80
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81 svndump_init_fd(dumpin_fd, STDIN_FILENO);
82 svndump_read(url, private_ref);
83 svndump_deinit();
84 svndump_reset();
85
86 close(dumpin_fd);
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87 if (!dump_from_file) {
88 code = finish_command(&svndump_proc);
89 if (code)
90 warning("%s, returned %d", svndump_proc.argv[0], code);
91 argv_array_clear(&svndump_argv);
92 }
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93
94 return 0;
95}
96
97static int cmd_list(const char *line)
98{
99 printf("? %s\n\n", remote_ref);
100 fflush(stdout);
101 return 0;
102}
103
104static int do_command(struct strbuf *line)
105{
106 const struct input_command_entry *p = input_command_list;
107 static struct string_list batchlines = STRING_LIST_INIT_DUP;
108 static const struct input_command_entry *batch_cmd;
109 /*
110 * commands can be grouped together in a batch.
111 * Batches are ended by \n. If no batch is active the program ends.
112 * During a batch all lines are buffered and passed to the handler function
113 * when the batch is terminated.
114 */
115 if (line->len == 0) {
116 if (batch_cmd) {
117 struct string_list_item *item;
118 for_each_string_list_item(item, &batchlines)
119 batch_cmd->fn(item->string);
120 terminate_batch();
121 batch_cmd = NULL;
122 string_list_clear(&batchlines, 0);
123 return 0; /* end of the batch, continue reading other commands. */
124 }
125 return 1; /* end of command stream, quit */
126 }
127 if (batch_cmd) {
128 if (prefixcmp(batch_cmd->name, line->buf))
129 die("Active %s batch interrupted by %s", batch_cmd->name, line->buf);
130 /* buffer batch lines */
131 string_list_append(&batchlines, line->buf);
132 return 0;
133 }
134
135 for (p = input_command_list; p->name; p++) {
136 if (!prefixcmp(line->buf, p->name) && (strlen(p->name) == line->len ||
137 line->buf[strlen(p->name)] == ' ')) {
138 if (p->batchable) {
139 batch_cmd = p;
140 string_list_append(&batchlines, line->buf);
141 return 0;
142 }
143 return p->fn(line->buf);
144 }
145 }
146 die("Unknown command '%s'\n", line->buf);
147 return 0;
148}
149
150int main(int argc, const char **argv)
151{
152 struct strbuf buf = STRBUF_INIT, url_sb = STRBUF_INIT,
8d7cd8eb 153 private_ref_sb = STRBUF_INIT, marksfilename_sb = STRBUF_INIT;
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154 static struct remote *remote;
155 const char *url_in;
156
157 git_extract_argv0_path(argv[0]);
158 setup_git_directory();
159 if (argc < 2 || argc > 3) {
160 usage("git-remote-svn <remote-name> [<url>]");
161 return 1;
162 }
163
164 remote = remote_get(argv[1]);
165 url_in = (argc == 3) ? argv[2] : remote->url[0];
166
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167 if (!prefixcmp(url_in, "file://")) {
168 dump_from_file = 1;
169 url = url_decode(url_in + sizeof("file://")-1);
170 } else {
171 dump_from_file = 0;
172 end_url_with_slash(&url_sb, url_in);
173 url = url_sb.buf;
174 }
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175
176 strbuf_addf(&private_ref_sb, "refs/svn/%s/master", remote->name);
177 private_ref = private_ref_sb.buf;
178
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179 strbuf_addf(&marksfilename_sb, "%s/info/fast-import/remote-svn/%s.marks",
180 get_git_dir(), remote->name);
181 marksfilename = marksfilename_sb.buf;
182
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183 while (1) {
184 if (strbuf_getline(&buf, stdin, '\n') == EOF) {
185 if (ferror(stdin))
186 die("Error reading command stream");
187 else
188 die("Unexpected end of command stream");
189 }
190 if (do_command(&buf))
191 break;
192 strbuf_reset(&buf);
193 }
194
195 strbuf_release(&buf);
196 strbuf_release(&url_sb);
197 strbuf_release(&private_ref_sb);
8d7cd8eb 198 strbuf_release(&marksfilename_sb);
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199 return 0;
200}