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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[] = |
0adda936 | 13 | "git mailsplit [-d<prec>] [-f<n>] [-b] [--keep-cr] -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 | { |
13b08125 | 56 | FILE *output; |
8b73edf4 JH |
57 | int fd; |
58 | int status = 0; | |
c8f373a5 | 59 | int is_bare = !is_from_line(buf.buf, buf.len); |
2744b234 | 60 | |
13b08125 | 61 | if (is_bare && !allow_bare) { |
13b08125 SB |
62 | fprintf(stderr, "corrupt mailbox\n"); |
63 | exit(1); | |
64 | } | |
8b73edf4 JH |
65 | fd = open(name, O_WRONLY | O_CREAT | O_EXCL, 0666); |
66 | if (fd < 0) | |
0721c314 | 67 | die_errno("cannot open output file '%s'", name); |
41698375 | 68 | output = xfdopen(fd, "w"); |
2744b234 | 69 | |
8b73edf4 JH |
70 | /* Copy it out, while searching for a line that begins with |
71 | * "From " and having something that looks like a date format. | |
2744b234 | 72 | */ |
8b73edf4 | 73 | for (;;) { |
c2ca1d79 JH |
74 | if (!keep_cr && buf.len > 1 && buf.buf[buf.len-1] == '\n' && |
75 | buf.buf[buf.len-2] == '\r') { | |
76 | strbuf_setlen(&buf, buf.len-2); | |
77 | strbuf_addch(&buf, '\n'); | |
78 | } | |
79 | ||
c8f373a5 | 80 | if (fwrite(buf.buf, 1, buf.len, output) != buf.len) |
0721c314 | 81 | die_errno("cannot write output"); |
8b73edf4 | 82 | |
c8f373a5 | 83 | if (strbuf_getwholeline(&buf, mbox, '\n')) { |
8b73edf4 JH |
84 | if (feof(mbox)) { |
85 | status = 1; | |
86 | break; | |
87 | } | |
0721c314 | 88 | die_errno("cannot read mbox"); |
8b73edf4 | 89 | } |
c8f373a5 | 90 | if (!is_bare && is_from_line(buf.buf, buf.len)) |
8b73edf4 JH |
91 | break; /* done with one message */ |
92 | } | |
93 | fclose(output); | |
94 | return status; | |
2744b234 LT |
95 | } |
96 | ||
c455c87c | 97 | static int populate_maildir_list(struct string_list *list, const char *path) |
2744b234 | 98 | { |
d63bd9a2 FP |
99 | DIR *dir; |
100 | struct dirent *dent; | |
d50a4bc4 GP |
101 | char name[PATH_MAX]; |
102 | char *subs[] = { "cur", "new", NULL }; | |
103 | char **sub; | |
104 | ||
105 | for (sub = subs; *sub; ++sub) { | |
106 | snprintf(name, sizeof(name), "%s/%s", path, *sub); | |
107 | if ((dir = opendir(name)) == NULL) { | |
108 | if (errno == ENOENT) | |
109 | continue; | |
110 | error("cannot opendir %s (%s)", name, strerror(errno)); | |
111 | return -1; | |
112 | } | |
d63bd9a2 | 113 | |
d50a4bc4 GP |
114 | while ((dent = readdir(dir)) != NULL) { |
115 | if (dent->d_name[0] == '.') | |
116 | continue; | |
117 | snprintf(name, sizeof(name), "%s/%s", *sub, dent->d_name); | |
78a395d3 | 118 | string_list_insert(list, name); |
d50a4bc4 | 119 | } |
d63bd9a2 | 120 | |
d50a4bc4 | 121 | closedir(dir); |
d63bd9a2 FP |
122 | } |
123 | ||
d63bd9a2 FP |
124 | return 0; |
125 | } | |
126 | ||
18505c34 JK |
127 | static int maildir_filename_cmp(const char *a, const char *b) |
128 | { | |
129 | while (*a && *b) { | |
130 | if (isdigit(*a) && isdigit(*b)) { | |
131 | long int na, nb; | |
132 | na = strtol(a, (char **)&a, 10); | |
133 | nb = strtol(b, (char **)&b, 10); | |
134 | if (na != nb) | |
135 | return na - nb; | |
136 | /* strtol advanced our pointers */ | |
137 | } | |
138 | else { | |
139 | if (*a != *b) | |
140 | return (unsigned char)*a - (unsigned char)*b; | |
141 | a++; | |
142 | b++; | |
143 | } | |
144 | } | |
145 | return (unsigned char)*a - (unsigned char)*b; | |
146 | } | |
147 | ||
d63bd9a2 FP |
148 | static int split_maildir(const char *maildir, const char *dir, |
149 | int nr_prec, int skip) | |
150 | { | |
151 | char file[PATH_MAX]; | |
d63bd9a2 | 152 | char name[PATH_MAX]; |
e690e843 | 153 | int ret = -1; |
d63bd9a2 | 154 | int i; |
183113a5 | 155 | struct string_list list = STRING_LIST_INIT_DUP; |
e690e843 | 156 | |
18505c34 JK |
157 | list.cmp = maildir_filename_cmp; |
158 | ||
d50a4bc4 | 159 | if (populate_maildir_list(&list, maildir) < 0) |
d63bd9a2 | 160 | goto out; |
e690e843 | 161 | |
d63bd9a2 FP |
162 | for (i = 0; i < list.nr; i++) { |
163 | FILE *f; | |
c455c87c | 164 | snprintf(file, sizeof(file), "%s/%s", maildir, list.items[i].string); |
d63bd9a2 FP |
165 | f = fopen(file, "r"); |
166 | if (!f) { | |
167 | error("cannot open mail %s (%s)", file, strerror(errno)); | |
e690e843 LS |
168 | goto out; |
169 | } | |
170 | ||
c8f373a5 | 171 | if (strbuf_getwholeline(&buf, f, '\n')) { |
d63bd9a2 | 172 | error("cannot read mail %s (%s)", file, strerror(errno)); |
e690e843 LS |
173 | goto out; |
174 | } | |
175 | ||
d63bd9a2 FP |
176 | sprintf(name, "%s/%0*d", dir, nr_prec, ++skip); |
177 | split_one(f, name, 1); | |
178 | ||
179 | fclose(f); | |
180 | } | |
181 | ||
d63bd9a2 FP |
182 | ret = skip; |
183 | out: | |
c455c87c | 184 | string_list_clear(&list, 1); |
d63bd9a2 FP |
185 | return ret; |
186 | } | |
187 | ||
fcd056a6 JH |
188 | static int split_mbox(const char *file, const char *dir, int allow_bare, |
189 | int nr_prec, int skip) | |
d63bd9a2 FP |
190 | { |
191 | char name[PATH_MAX]; | |
192 | int ret = -1; | |
f88a545a | 193 | int peek; |
d63bd9a2 FP |
194 | |
195 | FILE *f = !strcmp(file, "-") ? stdin : fopen(file, "r"); | |
196 | int file_done = 0; | |
197 | ||
198 | if (!f) { | |
199 | error("cannot open mbox %s", file); | |
200 | goto out; | |
201 | } | |
202 | ||
f88a545a SS |
203 | do { |
204 | peek = fgetc(f); | |
205 | } while (isspace(peek)); | |
206 | ungetc(peek, f); | |
207 | ||
c8f373a5 | 208 | if (strbuf_getwholeline(&buf, f, '\n')) { |
d63bd9a2 FP |
209 | /* empty stdin is OK */ |
210 | if (f != stdin) { | |
211 | error("cannot read mbox %s", file); | |
212 | goto out; | |
e690e843 | 213 | } |
d63bd9a2 FP |
214 | file_done = 1; |
215 | } | |
e690e843 | 216 | |
d63bd9a2 FP |
217 | while (!file_done) { |
218 | sprintf(name, "%s/%0*d", dir, nr_prec, ++skip); | |
219 | file_done = split_one(f, name, allow_bare); | |
e690e843 | 220 | } |
d63bd9a2 FP |
221 | |
222 | if (f != stdin) | |
223 | fclose(f); | |
224 | ||
e690e843 LS |
225 | ret = skip; |
226 | out: | |
e690e843 LS |
227 | return ret; |
228 | } | |
d63bd9a2 | 229 | |
a633fca0 | 230 | int cmd_mailsplit(int argc, const char **argv, const char *prefix) |
e690e843 | 231 | { |
d63bd9a2 | 232 | int nr = 0, nr_prec = 4, num = 0; |
b3f041fb PA |
233 | int allow_bare = 0; |
234 | const char *dir = NULL; | |
235 | const char **argp; | |
236 | static const char *stdin_only[] = { "-", NULL }; | |
8b73edf4 | 237 | |
b3f041fb PA |
238 | for (argp = argv+1; *argp; argp++) { |
239 | const char *arg = *argp; | |
8b73edf4 JH |
240 | |
241 | if (arg[0] != '-') | |
242 | break; | |
243 | /* do flags here */ | |
b3f041fb PA |
244 | if ( arg[1] == 'd' ) { |
245 | nr_prec = strtol(arg+2, NULL, 10); | |
8b73edf4 JH |
246 | if (nr_prec < 3 || 10 <= nr_prec) |
247 | usage(git_mailsplit_usage); | |
248 | continue; | |
b3f041fb PA |
249 | } else if ( arg[1] == 'f' ) { |
250 | nr = strtol(arg+2, NULL, 10); | |
aa481d38 JN |
251 | } else if ( arg[1] == 'h' ) { |
252 | usage(git_mailsplit_usage); | |
b3f041fb PA |
253 | } else if ( arg[1] == 'b' && !arg[2] ) { |
254 | allow_bare = 1; | |
c2ca1d79 JH |
255 | } else if (!strcmp(arg, "--keep-cr")) { |
256 | keep_cr = 1; | |
b3f041fb PA |
257 | } else if ( arg[1] == 'o' && arg[2] ) { |
258 | dir = arg+2; | |
259 | } else if ( arg[1] == '-' && !arg[2] ) { | |
260 | argp++; /* -- marks end of options */ | |
261 | break; | |
262 | } else { | |
263 | die("unknown option: %s", arg); | |
8b73edf4 | 264 | } |
2744b234 | 265 | } |
8b73edf4 | 266 | |
b3f041fb PA |
267 | if ( !dir ) { |
268 | /* Backwards compatibility: if no -o specified, accept | |
269 | <mbox> <dir> or just <dir> */ | |
270 | switch (argc - (argp-argv)) { | |
271 | case 1: | |
272 | dir = argp[0]; | |
273 | argp = stdin_only; | |
274 | break; | |
275 | case 2: | |
276 | stdin_only[0] = argp[0]; | |
277 | dir = argp[1]; | |
278 | argp = stdin_only; | |
279 | break; | |
280 | default: | |
281 | usage(git_mailsplit_usage); | |
282 | } | |
283 | } else { | |
284 | /* New usage: if no more argument, parse stdin */ | |
285 | if ( !*argp ) | |
286 | argp = stdin_only; | |
2744b234 | 287 | } |
8b73edf4 | 288 | |
d63bd9a2 FP |
289 | while (*argp) { |
290 | const char *arg = *argp++; | |
291 | struct stat argstat; | |
292 | int ret = 0; | |
293 | ||
294 | if (arg[0] == '-' && arg[1] == 0) { | |
295 | ret = split_mbox(arg, dir, allow_bare, nr_prec, nr); | |
296 | if (ret < 0) { | |
297 | error("cannot split patches from stdin"); | |
298 | return 1; | |
299 | } | |
b3327180 JH |
300 | num += (ret - nr); |
301 | nr = ret; | |
d63bd9a2 FP |
302 | continue; |
303 | } | |
304 | ||
305 | if (stat(arg, &argstat) == -1) { | |
306 | error("cannot stat %s (%s)", arg, strerror(errno)); | |
307 | return 1; | |
308 | } | |
309 | ||
310 | if (S_ISDIR(argstat.st_mode)) | |
311 | ret = split_maildir(arg, dir, nr_prec, nr); | |
312 | else | |
313 | ret = split_mbox(arg, dir, allow_bare, nr_prec, nr); | |
314 | ||
315 | if (ret < 0) { | |
316 | error("cannot split patches from %s", arg); | |
317 | return 1; | |
318 | } | |
b3327180 JH |
319 | num += (ret - nr); |
320 | nr = ret; | |
d63bd9a2 FP |
321 | } |
322 | ||
323 | printf("%d\n", num); | |
b3f041fb | 324 | |
d63bd9a2 | 325 | return 0; |
2744b234 | 326 | } |