FilesExpand file tree

 master

/

mailsplit.c

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

309 lines (263 loc) · 6.35 KB

 master

/

mailsplit.c

Copy path

Top

File metadata and controls

• Code
• Blame

309 lines (263 loc) · 6.35 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

/*

* Totally braindamaged mbox splitter program.

*

* It just splits a mbox into a list of files: "0001" "0002" ..

* so you can process them further from there.

*/

#include "cache.h"

#include "builtin.h"

#include "string-list.h"

#include "strbuf.h"

static const char git_mailsplit_usage[] =

"git mailsplit [-d<prec>] [-f<n>] [-b] [--keep-cr] -o<directory> [(<mbox>|<Maildir>)...]";

static int is_from_line(const char *line, int len)

{

const char *colon;

if (len < 20 || memcmp("From ", line, 5))

return 0;

colon = line + len - 2;

line += 5;

for (;;) {

if (colon < line)

return 0;

if (*--colon == ':')

break;

}

if (!isdigit(colon[-4]) ||

!isdigit(colon[-2]) ||

!isdigit(colon[-1]) ||

!isdigit(colon[ 1]) ||

!isdigit(colon[ 2]))

return 0;

/* year */

if (strtol(colon+3, NULL, 10) <= 90)

return 0;

/* Ok, close enough */

return 1;

}

static struct strbuf buf = STRBUF_INIT;

static int keep_cr;

/* Called with the first line (potentially partial)

* already in buf[] -- normally that should begin with

* the Unix "From " line. Write it into the specified

* file.

*/

static int split_one(FILE *mbox, const char *name, int allow_bare)

{

FILE *output = NULL;

int fd;

int status = 0;

int is_bare = !is_from_line(buf.buf, buf.len);

if (is_bare && !allow_bare)

goto corrupt;

fd = open(name, O_WRONLY | O_CREAT | O_EXCL, 0666);

if (fd < 0)

die_errno("cannot open output file '%s'", name);

output = xfdopen(fd, "w");

/* Copy it out, while searching for a line that begins with

* "From " and having something that looks like a date format.

*/

for (;;) {

if (!keep_cr && buf.len > 1 && buf.buf[buf.len-1] == '\n' &&

buf.buf[buf.len-2] == '\r') {

strbuf_setlen(&buf, buf.len-2);

strbuf_addch(&buf, '\n');

}

if (fwrite(buf.buf, 1, buf.len, output) != buf.len)

die_errno("cannot write output");

if (strbuf_getwholeline(&buf, mbox, '\n')) {

if (feof(mbox)) {

status = 1;

break;

}

die_errno("cannot read mbox");

}

if (!is_bare && is_from_line(buf.buf, buf.len))

break; /* done with one message */

}

fclose(output);

return status;

corrupt:

if (output)

fclose(output);

unlink(name);

fprintf(stderr, "corrupt mailbox\n");

exit(1);

}

static int populate_maildir_list(struct string_list *list, const char *path)

{

DIR *dir;

struct dirent *dent;

char name[PATH_MAX];

char *subs[] = { "cur", "new", NULL };

char **sub;

for (sub = subs; *sub; ++sub) {

snprintf(name, sizeof(name), "%s/%s", path, *sub);

if ((dir = opendir(name)) == NULL) {

if (errno == ENOENT)

continue;

error("cannot opendir %s (%s)", name, strerror(errno));

return -1;

}

while ((dent = readdir(dir)) != NULL) {

if (dent->d_name[0] == '.')

continue;

snprintf(name, sizeof(name), "%s/%s", *sub, dent->d_name);

string_list_insert(list, name);

}

closedir(dir);

}

return 0;

}

static int split_maildir(const char *maildir, const char *dir,

int nr_prec, int skip)

{

char file[PATH_MAX];

char name[PATH_MAX];

int ret = -1;

int i;

struct string_list list = STRING_LIST_INIT_DUP;

if (populate_maildir_list(&list, maildir) < 0)

goto out;

for (i = 0; i < list.nr; i++) {

FILE *f;

snprintf(file, sizeof(file), "%s/%s", maildir, list.items[i].string);

f = fopen(file, "r");

if (!f) {

error("cannot open mail %s (%s)", file, strerror(errno));

goto out;

}

if (strbuf_getwholeline(&buf, f, '\n')) {

error("cannot read mail %s (%s)", file, strerror(errno));

goto out;

}

sprintf(name, "%s/%0*d", dir, nr_prec, ++skip);

split_one(f, name, 1);

fclose(f);

}

ret = skip;

out:

string_list_clear(&list, 1);

return ret;

}

static int split_mbox(const char *file, const char *dir, int allow_bare,

int nr_prec, int skip)

{

char name[PATH_MAX];

int ret = -1;

int peek;

FILE *f = !strcmp(file, "-") ? stdin : fopen(file, "r");

int file_done = 0;

if (!f) {

error("cannot open mbox %s", file);

goto out;

}

do {

peek = fgetc(f);

} while (isspace(peek));

ungetc(peek, f);

if (strbuf_getwholeline(&buf, f, '\n')) {

/* empty stdin is OK */

if (f != stdin) {

error("cannot read mbox %s", file);

goto out;

}

file_done = 1;

}

while (!file_done) {

sprintf(name, "%s/%0*d", dir, nr_prec, ++skip);

file_done = split_one(f, name, allow_bare);

}

if (f != stdin)

fclose(f);

ret = skip;

out:

return ret;

}

int cmd_mailsplit(int argc, const char **argv, const char *prefix)

{

int nr = 0, nr_prec = 4, num = 0;

int allow_bare = 0;

const char *dir = NULL;

const char **argp;

static const char *stdin_only[] = { "-", NULL };

for (argp = argv+1; *argp; argp++) {

const char *arg = *argp;

if (arg[0] != '-')

break;

/* do flags here */

if ( arg[1] == 'd' ) {

nr_prec = strtol(arg+2, NULL, 10);

if (nr_prec < 3 || 10 <= nr_prec)

usage(git_mailsplit_usage);

continue;

} else if ( arg[1] == 'f' ) {

nr = strtol(arg+2, NULL, 10);

} else if ( arg[1] == 'h' ) {

usage(git_mailsplit_usage);

} else if ( arg[1] == 'b' && !arg[2] ) {

allow_bare = 1;

} else if (!strcmp(arg, "--keep-cr")) {

keep_cr = 1;

} else if ( arg[1] == 'o' && arg[2] ) {

dir = arg+2;

} else if ( arg[1] == '-' && !arg[2] ) {

argp++; /* -- marks end of options */

break;

} else {

die("unknown option: %s", arg);

}

}

if ( !dir ) {

/* Backwards compatibility: if no -o specified, accept

<mbox> <dir> or just <dir> */

switch (argc - (argp-argv)) {

case 1:

dir = argp[0];

argp = stdin_only;

break;

case 2:

stdin_only[0] = argp[0];

dir = argp[1];

argp = stdin_only;

break;

default:

usage(git_mailsplit_usage);

}

} else {

/* New usage: if no more argument, parse stdin */

if ( !*argp )

argp = stdin_only;

}

while (*argp) {

const char *arg = *argp++;

struct stat argstat;

int ret = 0;

if (arg[0] == '-' && arg[1] == 0) {

ret = split_mbox(arg, dir, allow_bare, nr_prec, nr);

if (ret < 0) {

error("cannot split patches from stdin");

return 1;

}

num += (ret - nr);

nr = ret;

continue;

}

if (stat(arg, &argstat) == -1) {

error("cannot stat %s (%s)", arg, strerror(errno));

return 1;

}

if (S_ISDIR(argstat.st_mode))

ret = split_maildir(arg, dir, nr_prec, nr);

else

ret = split_mbox(arg, dir, allow_bare, nr_prec, nr);

if (ret < 0) {

error("cannot split patches from %s", arg);

return 1;

}

num += (ret - nr);

nr = ret;

}

printf("%d\n", num);

return 0;

}