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