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Commit | Line | Data |
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2744b234 LT |
1 | /* |
2 | * Totally braindamaged mbox splitter program. | |
3 | * | |
4 | * It just splits a mbox into a list of files: "0001" "0002" .. | |
5 | * so you can process them further from there. | |
6 | */ | |
8b73edf4 | 7 | #include "cache.h" |
e690e843 | 8 | #include "builtin.h" |
c455c87c | 9 | #include "string-list.h" |
c8f373a5 | 10 | #include "strbuf.h" |
2744b234 | 11 | |
8b73edf4 | 12 | static const char git_mailsplit_usage[] = |
588c038a | 13 | "git mailsplit [-d<prec>] [-f<n>] [-b] -o<directory> [<mbox>|<Maildir>...]"; |
2744b234 LT |
14 | |
15 | static int is_from_line(const char *line, int len) | |
16 | { | |
17 | const char *colon; | |
18 | ||
19 | if (len < 20 || memcmp("From ", line, 5)) | |
20 | return 0; | |
21 | ||
22 | colon = line + len - 2; | |
23 | line += 5; | |
24 | for (;;) { | |
25 | if (colon < line) | |
26 | return 0; | |
27 | if (*--colon == ':') | |
28 | break; | |
29 | } | |
30 | ||
31 | if (!isdigit(colon[-4]) || | |
32 | !isdigit(colon[-2]) || | |
33 | !isdigit(colon[-1]) || | |
34 | !isdigit(colon[ 1]) || | |
35 | !isdigit(colon[ 2])) | |
36 | return 0; | |
37 | ||
38 | /* year */ | |
39 | if (strtol(colon+3, NULL, 10) <= 90) | |
40 | return 0; | |
41 | ||
42 | /* Ok, close enough */ | |
43 | return 1; | |
44 | } | |
45 | ||
c8f373a5 | 46 | static struct strbuf buf = STRBUF_INIT; |
c2ca1d79 | 47 | static int keep_cr; |
8b73edf4 JH |
48 | |
49 | /* Called with the first line (potentially partial) | |
50 | * already in buf[] -- normally that should begin with | |
51 | * the Unix "From " line. Write it into the specified | |
52 | * file. | |
53 | */ | |
b3f041fb | 54 | static int split_one(FILE *mbox, const char *name, int allow_bare) |
2744b234 | 55 | { |
8b73edf4 | 56 | FILE *output = NULL; |
8b73edf4 JH |
57 | int fd; |
58 | int status = 0; | |
c8f373a5 | 59 | int is_bare = !is_from_line(buf.buf, buf.len); |
2744b234 | 60 | |
b3f041fb | 61 | if (is_bare && !allow_bare) |
2744b234 LT |
62 | goto corrupt; |
63 | ||
8b73edf4 JH |
64 | fd = open(name, O_WRONLY | O_CREAT | O_EXCL, 0666); |
65 | if (fd < 0) | |
0721c314 | 66 | die_errno("cannot open output file '%s'", name); |
41698375 | 67 | output = xfdopen(fd, "w"); |
2744b234 | 68 | |
8b73edf4 JH |
69 | /* Copy it out, while searching for a line that begins with |
70 | * "From " and having something that looks like a date format. | |
2744b234 | 71 | */ |
8b73edf4 | 72 | for (;;) { |
c2ca1d79 JH |
73 | if (!keep_cr && buf.len > 1 && buf.buf[buf.len-1] == '\n' && |
74 | buf.buf[buf.len-2] == '\r') { | |
75 | strbuf_setlen(&buf, buf.len-2); | |
76 | strbuf_addch(&buf, '\n'); | |
77 | } | |
78 | ||
c8f373a5 | 79 | if (fwrite(buf.buf, 1, buf.len, output) != buf.len) |
0721c314 | 80 | die_errno("cannot write output"); |
8b73edf4 | 81 | |
c8f373a5 | 82 | if (strbuf_getwholeline(&buf, mbox, '\n')) { |
8b73edf4 JH |
83 | if (feof(mbox)) { |
84 | status = 1; | |
85 | break; | |
86 | } | |
0721c314 | 87 | die_errno("cannot read mbox"); |
8b73edf4 | 88 | } |
c8f373a5 | 89 | if (!is_bare && is_from_line(buf.buf, buf.len)) |
8b73edf4 JH |
90 | break; /* done with one message */ |
91 | } | |
92 | fclose(output); | |
93 | return status; | |
94 | ||
95 | corrupt: | |
96 | if (output) | |
97 | fclose(output); | |
98 | unlink(name); | |
2744b234 LT |
99 | fprintf(stderr, "corrupt mailbox\n"); |
100 | exit(1); | |
101 | } | |
102 | ||
c455c87c | 103 | static int populate_maildir_list(struct string_list *list, const char *path) |
2744b234 | 104 | { |
d63bd9a2 FP |
105 | DIR *dir; |
106 | struct dirent *dent; | |
d50a4bc4 GP |
107 | char name[PATH_MAX]; |
108 | char *subs[] = { "cur", "new", NULL }; | |
109 | char **sub; | |
110 | ||
111 | for (sub = subs; *sub; ++sub) { | |
112 | snprintf(name, sizeof(name), "%s/%s", path, *sub); | |
113 | if ((dir = opendir(name)) == NULL) { | |
114 | if (errno == ENOENT) | |
115 | continue; | |
116 | error("cannot opendir %s (%s)", name, strerror(errno)); | |
117 | return -1; | |
118 | } | |
d63bd9a2 | 119 | |
d50a4bc4 GP |
120 | while ((dent = readdir(dir)) != NULL) { |
121 | if (dent->d_name[0] == '.') | |
122 | continue; | |
123 | snprintf(name, sizeof(name), "%s/%s", *sub, dent->d_name); | |
c455c87c | 124 | string_list_insert(name, list); |
d50a4bc4 | 125 | } |
d63bd9a2 | 126 | |
d50a4bc4 | 127 | closedir(dir); |
d63bd9a2 FP |
128 | } |
129 | ||
d63bd9a2 FP |
130 | return 0; |
131 | } | |
132 | ||
133 | static int split_maildir(const char *maildir, const char *dir, | |
134 | int nr_prec, int skip) | |
135 | { | |
136 | char file[PATH_MAX]; | |
d63bd9a2 | 137 | char name[PATH_MAX]; |
e690e843 | 138 | int ret = -1; |
d63bd9a2 | 139 | int i; |
c455c87c | 140 | struct string_list list = {NULL, 0, 0, 1}; |
e690e843 | 141 | |
d50a4bc4 | 142 | if (populate_maildir_list(&list, maildir) < 0) |
d63bd9a2 | 143 | goto out; |
e690e843 | 144 | |
d63bd9a2 FP |
145 | for (i = 0; i < list.nr; i++) { |
146 | FILE *f; | |
c455c87c | 147 | snprintf(file, sizeof(file), "%s/%s", maildir, list.items[i].string); |
d63bd9a2 FP |
148 | f = fopen(file, "r"); |
149 | if (!f) { | |
150 | error("cannot open mail %s (%s)", file, strerror(errno)); | |
e690e843 LS |
151 | goto out; |
152 | } | |
153 | ||
c8f373a5 | 154 | if (strbuf_getwholeline(&buf, f, '\n')) { |
d63bd9a2 | 155 | error("cannot read mail %s (%s)", file, strerror(errno)); |
e690e843 LS |
156 | goto out; |
157 | } | |
158 | ||
d63bd9a2 FP |
159 | sprintf(name, "%s/%0*d", dir, nr_prec, ++skip); |
160 | split_one(f, name, 1); | |
161 | ||
162 | fclose(f); | |
163 | } | |
164 | ||
d63bd9a2 FP |
165 | ret = skip; |
166 | out: | |
c455c87c | 167 | string_list_clear(&list, 1); |
d63bd9a2 FP |
168 | return ret; |
169 | } | |
170 | ||
fcd056a6 JH |
171 | static int split_mbox(const char *file, const char *dir, int allow_bare, |
172 | int nr_prec, int skip) | |
d63bd9a2 FP |
173 | { |
174 | char name[PATH_MAX]; | |
175 | int ret = -1; | |
f88a545a | 176 | int peek; |
d63bd9a2 FP |
177 | |
178 | FILE *f = !strcmp(file, "-") ? stdin : fopen(file, "r"); | |
179 | int file_done = 0; | |
180 | ||
181 | if (!f) { | |
182 | error("cannot open mbox %s", file); | |
183 | goto out; | |
184 | } | |
185 | ||
f88a545a SS |
186 | do { |
187 | peek = fgetc(f); | |
188 | } while (isspace(peek)); | |
189 | ungetc(peek, f); | |
190 | ||
c8f373a5 | 191 | if (strbuf_getwholeline(&buf, f, '\n')) { |
d63bd9a2 FP |
192 | /* empty stdin is OK */ |
193 | if (f != stdin) { | |
194 | error("cannot read mbox %s", file); | |
195 | goto out; | |
e690e843 | 196 | } |
d63bd9a2 FP |
197 | file_done = 1; |
198 | } | |
e690e843 | 199 | |
d63bd9a2 FP |
200 | while (!file_done) { |
201 | sprintf(name, "%s/%0*d", dir, nr_prec, ++skip); | |
202 | file_done = split_one(f, name, allow_bare); | |
e690e843 | 203 | } |
d63bd9a2 FP |
204 | |
205 | if (f != stdin) | |
206 | fclose(f); | |
207 | ||
e690e843 LS |
208 | ret = skip; |
209 | out: | |
e690e843 LS |
210 | return ret; |
211 | } | |
d63bd9a2 | 212 | |
a633fca0 | 213 | int cmd_mailsplit(int argc, const char **argv, const char *prefix) |
e690e843 | 214 | { |
d63bd9a2 | 215 | int nr = 0, nr_prec = 4, num = 0; |
b3f041fb PA |
216 | int allow_bare = 0; |
217 | const char *dir = NULL; | |
218 | const char **argp; | |
219 | static const char *stdin_only[] = { "-", NULL }; | |
8b73edf4 | 220 | |
b3f041fb PA |
221 | for (argp = argv+1; *argp; argp++) { |
222 | const char *arg = *argp; | |
8b73edf4 JH |
223 | |
224 | if (arg[0] != '-') | |
225 | break; | |
226 | /* do flags here */ | |
b3f041fb PA |
227 | if ( arg[1] == 'd' ) { |
228 | nr_prec = strtol(arg+2, NULL, 10); | |
8b73edf4 JH |
229 | if (nr_prec < 3 || 10 <= nr_prec) |
230 | usage(git_mailsplit_usage); | |
231 | continue; | |
b3f041fb PA |
232 | } else if ( arg[1] == 'f' ) { |
233 | nr = strtol(arg+2, NULL, 10); | |
aa481d38 JN |
234 | } else if ( arg[1] == 'h' ) { |
235 | usage(git_mailsplit_usage); | |
b3f041fb PA |
236 | } else if ( arg[1] == 'b' && !arg[2] ) { |
237 | allow_bare = 1; | |
c2ca1d79 JH |
238 | } else if (!strcmp(arg, "--keep-cr")) { |
239 | keep_cr = 1; | |
b3f041fb PA |
240 | } else if ( arg[1] == 'o' && arg[2] ) { |
241 | dir = arg+2; | |
242 | } else if ( arg[1] == '-' && !arg[2] ) { | |
243 | argp++; /* -- marks end of options */ | |
244 | break; | |
245 | } else { | |
246 | die("unknown option: %s", arg); | |
8b73edf4 | 247 | } |
2744b234 | 248 | } |
8b73edf4 | 249 | |
b3f041fb PA |
250 | if ( !dir ) { |
251 | /* Backwards compatibility: if no -o specified, accept | |
252 | <mbox> <dir> or just <dir> */ | |
253 | switch (argc - (argp-argv)) { | |
254 | case 1: | |
255 | dir = argp[0]; | |
256 | argp = stdin_only; | |
257 | break; | |
258 | case 2: | |
259 | stdin_only[0] = argp[0]; | |
260 | dir = argp[1]; | |
261 | argp = stdin_only; | |
262 | break; | |
263 | default: | |
264 | usage(git_mailsplit_usage); | |
265 | } | |
266 | } else { | |
267 | /* New usage: if no more argument, parse stdin */ | |
268 | if ( !*argp ) | |
269 | argp = stdin_only; | |
2744b234 | 270 | } |
8b73edf4 | 271 | |
d63bd9a2 FP |
272 | while (*argp) { |
273 | const char *arg = *argp++; | |
274 | struct stat argstat; | |
275 | int ret = 0; | |
276 | ||
277 | if (arg[0] == '-' && arg[1] == 0) { | |
278 | ret = split_mbox(arg, dir, allow_bare, nr_prec, nr); | |
279 | if (ret < 0) { | |
280 | error("cannot split patches from stdin"); | |
281 | return 1; | |
282 | } | |
b3327180 JH |
283 | num += (ret - nr); |
284 | nr = ret; | |
d63bd9a2 FP |
285 | continue; |
286 | } | |
287 | ||
288 | if (stat(arg, &argstat) == -1) { | |
289 | error("cannot stat %s (%s)", arg, strerror(errno)); | |
290 | return 1; | |
291 | } | |
292 | ||
293 | if (S_ISDIR(argstat.st_mode)) | |
294 | ret = split_maildir(arg, dir, nr_prec, nr); | |
295 | else | |
296 | ret = split_mbox(arg, dir, allow_bare, nr_prec, nr); | |
297 | ||
298 | if (ret < 0) { | |
299 | error("cannot split patches from %s", arg); | |
300 | return 1; | |
301 | } | |
b3327180 JH |
302 | num += (ret - nr); |
303 | nr = ret; | |
d63bd9a2 FP |
304 | } |
305 | ||
306 | printf("%d\n", num); | |
b3f041fb | 307 | |
d63bd9a2 | 308 | return 0; |
2744b234 | 309 | } |