git.marmaro.de Git - mmh/blob - uip/scan.c

   1 /*
   2 ** scan.c -- display a one-line "scan" listing of folder or messages
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <h/fmt_scan.h>
  11 #include <h/scansbr.h>
  12 #include <h/tws.h>
  13 #include <h/utils.h>
  14 #include <errno.h>
  15 #include <unistd.h>
  16 #include <locale.h>
  17 #include <sysexits.h>
  18
  19 static struct swit switches[] = {
  20 #define FORMSW  0
  21         { "form formatfile", 0 },
  22 #define WIDTHSW  1
  23         { "width columns", 0 },
  24 #define FILESW  2
  25         { "file file", 0 },
  26 #define VERSIONSW 3
  27         { "Version", 0 },
  28 #define HELPSW  4
  29         { "help", 0 },
  30         { NULL, 0 }
  31 };
  32
  33
  34 int
  35 main(int argc, char **argv)
  36 {
  37         int width = 0;
  38         int i, state, msgnum;
  39         int seqnum[NUMATTRS], unseen, num_unseen_seq = 0;
  40         char *cp, *maildir, *file = NULL, *folder = NULL;
  41         char *form = NULL, buf[BUFSIZ];
  42         char **argp, *fmtstr, **arguments;
  43         struct msgs_array msgs = { 0, 0, NULL };
  44         struct msgs *mp;
  45         FILE *in;
  46
  47         setlocale(LC_ALL, "");
  48         invo_name = mhbasename(argv[0]);
  49
  50         /* read user profile/context */
  51         context_read();
  52
  53         arguments = getarguments(invo_name, argc, argv, 1);
  54         argp = arguments;
  55
  56         /*
  57         ** Parse arguments
  58         */
  59         while ((cp = *argp++)) {
  60                 if (*cp == '-') {
  61                         switch (smatch(++cp, switches)) {
  62                         case AMBIGSW:
  63                                 ambigsw(cp, switches);
  64                                 exit(EX_USAGE);
  65                         case UNKWNSW:
  66                                 adios(EX_USAGE, NULL, "-%s unknown", cp);
  67
  68                         case HELPSW:
  69                                 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
  70                                 print_help(buf, switches, 1);
  71                                 exit(argc == 2 ? EX_OK : EX_USAGE);
  72                         case VERSIONSW:
  73                                 print_version(invo_name);
  74                                 exit(argc == 2 ? EX_OK : EX_USAGE);
  75
  76                         case FORMSW:
  77                                 if (!(form = *argp++) || *form == '-')
  78                                         adios(EX_USAGE, NULL, "missing argument to %s",
  79                                                         argp[-2]);
  80                                 continue;
  81
  82                         case WIDTHSW:
  83                                 if (!(cp = *argp++) || *cp == '-')
  84                                         adios(EX_USAGE, NULL, "missing argument to %s",
  85                                                         argp[-2]);
  86                                 width = atoi(cp);
  87                                 continue;
  88
  89                         case FILESW:
  90                                 if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
  91                                         adios(EX_USAGE, NULL, "missing argument to %s",
  92                                                         argp[-2]);
  93                                 if (strcmp(file = cp, "-")!=0)
  94                                         file = mh_xstrdup(expanddir(cp));
  95                                 continue;
  96                         }
  97                 }
  98                 if (*cp == '+' || *cp == '@') {
  99                         if (folder)
 100                                 adios(EX_USAGE, NULL, "only one folder at a time!");
 101                         else
 102                                 folder = mh_xstrdup(expandfol(cp));
 103                 } else
 104                         app_msgarg(&msgs, cp);
 105         }
 106
 107         /*
 108         ** Get new format string.  Must be before chdir().
 109         */
 110         fmtstr = new_fs(form, FORMAT);
 111
 112         /*
 113         ** We are scanning a maildrop file
 114         */
 115         if (file) {
 116                 if (msgs.size)
 117                         adios(EX_USAGE, NULL, "\"msgs\" not allowed with -file");
 118                 if (folder)
 119                         adios(EX_USAGE, NULL, "\"+folder\" not allowed with -file");
 120
 121                 /* check if "file" is really stdin */
 122                 if (strcmp(file, "-") == 0) {
 123                         in = stdin;
 124                         file = "stdin";
 125                 } else if (!(in = fopen(file, "r"))) {
 126                         adios(EX_IOERR, file, "unable to open");
 127                 }
 128
 129                 thisisanmbox(in);
 130                 for (msgnum = 1; ; ++msgnum) {
 131                         state = scan(in, msgnum, SCN_MBOX, fmtstr, width, 0, 0);
 132                         if (state != SCNMSG)
 133                                 break;
 134                 }
 135                 fclose(in);
 136                 exit(EX_OK);
 137         }
 138
 139         /*
 140         ** We are scanning a folder
 141         */
 142
 143         if (!msgs.size)
 144                 app_msgarg(&msgs, seq_all);
 145         if (!folder)
 146                 folder = getcurfol();
 147         maildir = toabsdir(folder);
 148
 149         if (chdir(maildir) == NOTOK)
 150                 adios(EX_OSERR, maildir, "unable to change directory to");
 151
 152         /* read folder and create message structure */
 153         if (!(mp = folder_read(folder)))
 154                 adios(EX_IOERR, NULL, "unable to read folder %s", folder);
 155
 156         /* check for empty folder */
 157         if (mp->nummsg == 0)
 158                 adios(EX_DATAERR, NULL, "no messages in %s", folder);
 159
 160         /* parse all the message ranges/sequences and set SELECTED */
 161         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 162                 if (!m_convert(mp, msgs.msgs[msgnum]))
 163                         exit(EX_USAGE);
 164         seq_setprev(mp);  /* set the Previous-Sequence */
 165
 166         context_replace(curfolder, folder);  /* update current folder */
 167         seq_save(mp);  /* synchronize message sequences */
 168         context_save();  /* save the context file */
 169
 170         /*
 171         ** Get the sequence number for each `unseen' sequence
 172         */
 173         if (!(cp = context_find(usequence))) {
 174                 cp = seq_unseen;  /* use default, if not set */
 175         }
 176         if (*cp) {
 177                 char **ap, *dp;
 178
 179                 dp = mh_xstrdup(cp);
 180                 ap = brkstring(dp, " ", "\n");
 181                 for (i = 0; ap && *ap; i++, ap++) {
 182                         seqnum[i] = seq_getnum(mp, *ap);
 183                 }
 184                 num_unseen_seq = i;
 185                 if (dp) {
 186                         mh_free0(&dp);
 187                 }
 188         }
 189
 190         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 191                 if (is_selected(mp, msgnum)) {
 192                         if ((in = fopen(cp = m_name(msgnum), "r")) == NULL) {
 193                                 admonish(cp, "unable to open message");
 194                                 continue;
 195                         }
 196
 197                         /*
 198                         ** Check if message is in any sequence given
 199                         ** by Unseen-Sequence profile entry.
 200                         */
 201                         unseen = 0;
 202                         for (i = 0; i < num_unseen_seq; i++) {
 203                                 if (in_sequence(mp, seqnum[i], msgnum)) {
 204                                         unseen = 1;
 205                                         break;
 206                                 }
 207                         }
 208
 209                         switch (state = scan(in, msgnum, SCN_FOLD, fmtstr,
 210                                         width, msgnum==mp->curmsg, unseen)) {
 211                         case SCNMSG:
 212                         case SCNERR:
 213                                 break;
 214
 215                         default:
 216                                 adios(EX_SOFTWARE, NULL, "scan() botch(%d)", state);
 217
 218                         case SCNEOF:
 219                                 advise(NULL, "message %d: empty", msgnum);
 220                                 break;
 221                         }
 222                         fclose(in);
 223                 }
 224         }
 225
 226         folder_free(mp);  /* free folder/message structure */
 227
 228         return 0;
 229 }