diplodocus.org Git - nmh/blob - uip/packf.c

   1
   2 /*
   3  * packf.c -- pack a nmh folder into a file
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <fcntl.h>
  14 #include <h/dropsbr.h>
  15 #include <errno.h>
  16
  17 /*
  18  * We allocate space for messages (msgs array)
  19  * this number of elements at a time.
  20  */
  21 #define MAXMSGS  256
  22
  23
  24 static struct swit switches[] = {
  25 #define FILESW         0
  26     { "file name", 0 },
  27 #define MBOXSW         1
  28     { "mbox", 0 },
  29 #define MMDFSW         2
  30     { "mmdf", 0 },
  31 #define VERSIONSW      3
  32     { "version", 0 },
  33 #define HELPSW         4
  34     { "help", 0 },
  35     { NULL, 0 }
  36 };
  37
  38 extern int errno;
  39
  40 static int md = NOTOK;
  41 static int mbx_style = MBOX_FORMAT;
  42 static int mapping = 0;
  43
  44 char *file = NULL;
  45
  46
  47 int
  48 main (int argc, char **argv)
  49 {
  50     int nummsgs, maxmsgs, fd, msgnum;
  51     char *cp, *maildir, *msgnam, *folder = NULL, buf[BUFSIZ];
  52     char **argp, **arguments, **msgs;
  53     struct msgs *mp;
  54     struct stat st;
  55
  56 #ifdef LOCALE
  57     setlocale(LC_ALL, "");
  58 #endif
  59     invo_name = r1bindex (argv[0], '/');
  60
  61     /* read user profile/context */
  62     context_read();
  63
  64     arguments = getarguments (invo_name, argc, argv, 1);
  65     argp = arguments;
  66
  67     /* Allocate the initial space to record message
  68      * names and ranges.
  69      */
  70     nummsgs = 0;
  71     maxmsgs = MAXMSGS;
  72     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
  73         adios (NULL, "unable to allocate storage");
  74
  75     /*
  76      * Parse arguments
  77      */
  78     while ((cp = *argp++)) {
  79         if (*cp == '-') {
  80             switch (smatch (++cp, switches)) {
  81                 case AMBIGSW:
  82                     ambigsw (cp, switches);
  83                     done (1);
  84                 case UNKWNSW:
  85                     adios (NULL, "-%s unknown", cp);
  86
  87                 case HELPSW:
  88                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  89                         invo_name);
  90                     print_help (buf, switches, 1);
  91                     done (1);
  92                 case VERSIONSW:
  93                     print_version(invo_name);
  94                     done (1);
  95
  96                 case FILESW:
  97                     if (file)
  98                         adios (NULL, "only one file at a time!");
  99                     if (!(file = *argp++) || *file == '-')
 100                         adios (NULL, "missing argument to %s", argp[-2]);
 101                     continue;
 102
 103                 case MBOXSW:
 104                     mbx_style = MBOX_FORMAT;
 105                     mapping = 0;
 106                     continue;
 107                 case MMDFSW:
 108                     mbx_style = MMDF_FORMAT;
 109                     mapping = 1;
 110                     continue;
 111             }
 112         }
 113         if (*cp == '+' || *cp == '@') {
 114             if (folder)
 115                 adios (NULL, "only one folder at a time!");
 116             folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 117         } else {
 118             /*
 119              * Check if we need to allocate more space
 120              * for message name/ranges.
 121              */
 122             if (nummsgs >= maxmsgs) {
 123                 maxmsgs += MAXMSGS;
 124                 if (!(msgs = (char **) realloc (msgs,
 125                         (size_t) (maxmsgs * sizeof(*msgs)))))
 126                     adios (NULL, "unable to reallocate msgs storage");
 127             }
 128             msgs[nummsgs++] = cp;
 129         }
 130     }
 131
 132     if (!file)
 133         file = "./msgbox";
 134     file = path (file, TFILE);
 135
 136     /*
 137      * Check if file to be created (or appended to)
 138      * exists.  If not, ask for confirmation.
 139      */
 140     if (stat (file, &st) == NOTOK) {
 141         if (errno != ENOENT)
 142             adios (file, "error on file");
 143         cp = concat ("Create file \"", file, "\"? ", NULL);
 144         if (!getanswer (cp))
 145             done (1);
 146         free (cp);
 147     }
 148
 149     if (!context_find ("path"))
 150         free (path ("./", TFOLDER));
 151
 152     /* default is to pack whole folder */
 153     if (!nummsgs)
 154         msgs[nummsgs++] = "all";
 155
 156     if (!folder)
 157         folder = getfolder (1);
 158     maildir = m_maildir (folder);
 159
 160     if (chdir (maildir) == NOTOK)
 161         adios (maildir, "unable to change directory to ");
 162
 163     /* read folder and create message structure */
 164     if (!(mp = folder_read (folder)))
 165         adios (NULL, "unable to read folder %s", folder);
 166
 167     /* check for empty folder */
 168     if (mp->nummsg == 0)
 169         adios (NULL, "no messages in %s", folder);
 170
 171     /* parse all the message ranges/sequences and set SELECTED */
 172     for (msgnum = 0; msgnum < nummsgs; msgnum++)
 173         if (!m_convert (mp, msgs[msgnum]))
 174             done (1);
 175     seq_setprev (mp);   /* set the previous-sequence */
 176
 177     /* open and lock new maildrop file */
 178     if ((md = mbx_open(file, mbx_style, getuid(), getgid(), m_gmprot())) == NOTOK)
 179         adios (file, "unable to open");
 180
 181     /* copy all the SELECTED messages to the file */
 182     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 183         if (is_selected(mp, msgnum)) {
 184             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 185                 admonish (msgnam, "unable to read message");
 186                 break;
 187             }
 188
 189             if (mbx_copy (file, mbx_style, md, fd, mapping, NULL, 1) == NOTOK)
 190                 adios (file, "error writing to file");
 191
 192             close (fd);
 193         }
 194
 195     /* close and unlock maildrop file */
 196     mbx_close (file, md);
 197
 198     context_replace (pfolder, folder);  /* update current folder         */
 199     if (mp->hghsel != mp->curmsg)
 200         seq_setcur (mp, mp->lowsel);
 201     seq_save (mp);
 202     context_save ();                    /* save the context file         */
 203     folder_free (mp);                   /* free folder/message structure */
 204     return done (0);
 205 }
 206
 207 int
 208 done (int status)
 209 {
 210     mbx_close (file, md);
 211     exit (status);
 212     return 1;  /* dead code to satisfy the compiler */
 213 }