2 * Licensed under a two-clause BSD-style license.
3 * See LICENSE for details.
6 #include "git-compat-util.h"
7 #include "fast_export.h"
8 #include "line_buffer.h"
10 #include "string_pool.h"
13 #define MAX_GITSVN_LINE_LEN 4096
15 static uint32_t first_commit_done;
16 static struct line_buffer report_buffer = LINE_BUFFER_INIT;
18 void fast_export_init(int fd)
20 if (buffer_fdinit(&report_buffer, fd))
21 die_errno("cannot read from file descriptor %d", fd);
24 void fast_export_deinit(void)
26 if (buffer_deinit(&report_buffer))
27 die_errno("error closing fast-import feedback stream");
30 void fast_export_reset(void)
32 buffer_reset(&report_buffer);
35 void fast_export_delete(uint32_t depth, const uint32_t *path)
39 pool_print_seq(depth, path, '/', stdout);
43 static void fast_export_truncate(uint32_t depth, const uint32_t *path, uint32_t mode)
45 fast_export_modify(depth, path, mode, "inline");
49 void fast_export_modify(uint32_t depth, const uint32_t *path, uint32_t mode,
52 /* Mode must be 100644, 100755, 120000, or 160000. */
54 fast_export_truncate(depth, path, mode);
57 printf("M %06"PRIo32" %s ", mode, dataref);
58 pool_print_seq(depth, path, '/', stdout);
62 static char gitsvnline[MAX_GITSVN_LINE_LEN];
63 void fast_export_begin_commit(uint32_t revision, uint32_t author, char *log,
64 uint32_t uuid, uint32_t url,
65 unsigned long timestamp)
70 snprintf(gitsvnline, MAX_GITSVN_LINE_LEN,
71 "\n\ngit-svn-id: %s@%"PRIu32" %s\n",
72 pool_fetch(url), revision, pool_fetch(uuid));
76 printf("commit refs/heads/master\n");
77 printf("mark :%"PRIu32"\n", revision);
78 printf("committer %s <%s@%s> %ld +0000\n",
79 ~author ? pool_fetch(author) : "nobody",
80 ~author ? pool_fetch(author) : "nobody",
81 ~uuid ? pool_fetch(uuid) : "local", timestamp);
82 printf("data %"PRIu32"\n%s%s\n",
83 (uint32_t) (strlen(log) + strlen(gitsvnline)),
85 if (!first_commit_done) {
87 printf("from refs/heads/master^0\n");
88 first_commit_done = 1;
92 void fast_export_end_commit(uint32_t revision)
94 printf("progress Imported commit %"PRIu32".\n\n", revision);
97 static void ls_from_rev(uint32_t rev, uint32_t depth, const uint32_t *path)
99 /* ls :5 path/to/old/file */
100 printf("ls :%"PRIu32" ", rev);
101 pool_print_seq(depth, path, '/', stdout);
106 static void ls_from_active_commit(uint32_t depth, const uint32_t *path)
108 /* ls "path/to/file" */
110 pool_print_seq_q(depth, path, '/', stdout);
115 static const char *get_response_line(void)
117 const char *line = buffer_read_line(&report_buffer);
120 if (buffer_ferror(&report_buffer))
121 die_errno("error reading from fast-import");
122 die("unexpected end of fast-import feedback");
125 void fast_export_data(uint32_t mode, uint32_t len, struct line_buffer *input)
127 if (mode == REPO_MODE_LNK) {
128 /* svn symlink blobs start with "link " */
129 buffer_skip_bytes(input, 5);
132 printf("data %"PRIu32"\n", len);
133 buffer_copy_bytes(input, len);
137 static int parse_ls_response(const char *response, uint32_t *mode,
138 struct strbuf *dataref)
141 const char *response_end;
144 response_end = response + strlen(response);
146 if (*response == 'm') { /* Missing. */
152 if (response_end - response < strlen("100644") ||
153 response[strlen("100644")] != ' ')
154 die("invalid ls response: missing mode: %s", response);
156 for (; *response != ' '; response++) {
158 if (ch < '0' || ch > '7')
159 die("invalid ls response: mode is not octal: %s", response);
164 /* ' blob ' or ' tree ' */
165 if (response_end - response < strlen(" blob ") ||
166 (response[1] != 'b' && response[1] != 't'))
167 die("unexpected ls response: not a tree or blob: %s", response);
168 response += strlen(" blob ");
171 tab = memchr(response, '\t', response_end - response);
173 die("invalid ls response: missing tab: %s", response);
174 strbuf_add(dataref, response, tab - response);
178 int fast_export_ls_rev(uint32_t rev, uint32_t depth, const uint32_t *path,
179 uint32_t *mode, struct strbuf *dataref)
181 ls_from_rev(rev, depth, path);
182 return parse_ls_response(get_response_line(), mode, dataref);
185 int fast_export_ls(uint32_t depth, const uint32_t *path,
186 uint32_t *mode, struct strbuf *dataref)
188 ls_from_active_commit(depth, path);
189 return parse_ls_response(get_response_line(), mode, dataref);