+ int publicsw = -1, zerosw = 1, vecp = 0;
+ unsigned int seqp = 0;
+ int lo, hi, msgnum;
+ char *maildir, *folder = NULL, buf[100];
+ char *cp, **argp, **arguments;
+ char *seqs[NUMATTRS + 1], *vec[MAXARGS];
+ struct msgs_array msgs = { 0, 0, NULL };
+ struct msgs *mp;
+ register FILE *fp;
+
+ done=putzero_done;
+
+ setlocale(LC_ALL, "");
+ invo_name = mhbasename(argv[0]);
+
+ /* read user profile/context */
+ context_read();
+
+ arguments = getarguments(invo_name, argc, argv, 1);
+ argp = arguments;
+
+ while ((cp = *argp++)) {
+ if (*cp == '-') {
+ if (*++cp == '-') {
+ vec[vecp++] = --cp;
+ goto pattern;
+ }
+ switch (smatch(cp, switches)) {
+ case AMBIGSW:
+ ambigsw(cp, switches);
+ listsw = 0; /* HACK */
+ done(1);
+ case UNKWNSW:
+ adios(NULL, "-%s unknown", cp);
+
+ case HELPSW:
+ snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
+ print_help(buf, switches, 1);
+ listsw = 0; /* HACK */
+ done(1);
+ case VERSIONSW:
+ print_version(invo_name);
+ listsw = 0; /* HACK */
+ done(1);
+
+ case CCSW:
+ case DATESW:
+ case FROMSW:
+ case SUBJSW:
+ case TOSW:
+ case DATFDSW:
+ case AFTRSW:
+ case BEFRSW:
+ case SRCHSW:
+ vec[vecp++] = --cp;
+ pattern:
+ if (!(cp = *argp++)) /* allow -xyz arguments */
+ adios(NULL, "missing argument to %s",
+ argp[-2]);
+ vec[vecp++] = cp;
+ continue;
+ case OTHRSW:
+ adios(NULL, "internal error!");
+
+ case ANDSW:
+ case ORSW:
+ case NOTSW:
+ case LBRSW:
+ case RBRSW:
+ vec[vecp++] = --cp;
+ continue;
+
+ case SEQSW:
+ if (!(cp = *argp++) || *cp == '-')
+ adios(NULL, "missing argument to %s",
+ argp[-2]);
+
+ /* check if too many sequences specified */
+ if (seqp >= NUMATTRS)
+ adios(NULL, "too many sequences (more than %d) specified", NUMATTRS);
+
+ if (!seq_nameok(cp))
+ done(1);
+
+ seqs[seqp++] = cp;
+ continue;
+ case PUBLSW:
+ publicsw = 1;
+ continue;
+ case NPUBLSW:
+ publicsw = 0;
+ continue;
+ case ZEROSW:
+ zerosw++;
+ continue;
+ case NZEROSW:
+ zerosw = 0;
+ continue;
+
+ case LISTSW:
+ listsw = 1;
+ continue;
+ case NLISTSW:
+ listsw = 0;
+ continue;
+ }
+ }
+ if (*cp == '+' || *cp == '@') {
+ if (folder)
+ adios(NULL, "only one folder at a time!");
+ else
+ folder = getcpy(expandfol(cp));
+ } else
+ app_msgarg(&msgs, cp);
+ }
+ vec[vecp] = NULL;
+
+ /*
+ ** If we didn't specify which messages to search,
+ ** then search the whole folder.
+ */
+ if (!msgs.size)
+ app_msgarg(&msgs, seq_all);
+
+ if (!folder)
+ folder = getcurfol();
+ maildir = toabsdir(folder);
+
+ if (chdir(maildir) == NOTOK)
+ adios(maildir, "unable to change directory to");
+
+ /* read folder and create message structure */
+ if (!(mp = folder_read(folder)))
+ adios(NULL, "unable to read folder %s", folder);
+
+ /* check for empty folder */
+ if (mp->nummsg == 0)
+ adios(NULL, "no messages in %s", folder);
+
+ /* parse all the message ranges/sequences and set SELECTED */
+ for (msgnum = 0; msgnum < msgs.size; msgnum++)
+ if (!m_convert(mp, msgs.msgs[msgnum]))
+ done(1);
+ seq_setprev(mp); /* set the previous-sequence */
+
+ /*
+ ** If we aren't saving the results to a sequence,
+ ** we default to list the results.
+ */
+ if (listsw == -1)
+ listsw = !seqp;
+
+ if (publicsw == 1 && is_readonly(mp))
+ adios(NULL, "folder %s is read-only, so -public not allowed",
+ folder);
+
+ if (!pcompile(vec, NULL))
+ done(1);
+
+ lo = mp->lowsel;
+ hi = mp->hghsel;
+
+ /*
+ ** If printing message numbers to standard out,
+ ** force line buffering on.
+ */
+ if (listsw)
+ setvbuf(stdout, NULL, _IOLBF, 0);
+
+ /*
+ ** Scan through all the SELECTED messages and check for a
+ ** match. If the message does not match, then unselect it.
+ */
+ for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
+ if (is_selected(mp, msgnum)) {
+ if ((fp = fopen(cp = m_name(msgnum), "r")) == NULL)
+ admonish(cp, "unable to read message");
+ if (fp && pmatches(fp, msgnum, 0L, 0L)) {
+ if (msgnum < lo)
+ lo = msgnum;
+ if (msgnum > hi)
+ hi = msgnum;
+
+ if (listsw)
+ printf("%s\n", m_name(msgnum));
+ } else {
+ /* if it doesn't match, then unselect it */
+ unset_selected(mp, msgnum);
+ mp->numsel--;
+ }
+ if (fp)
+ fclose(fp);
+ }
+ }
+
+ mp->lowsel = lo;
+ mp->hghsel = hi;
+
+ if (mp->numsel <= 0)
+ adios(NULL, "no messages match specification");
+
+ seqs[seqp] = NULL;
+
+ /*
+ ** Add the matching messages to sequences
+ */
+ for (seqp = 0; seqs[seqp]; seqp++)
+ if (!seq_addsel(mp, seqs[seqp], publicsw, zerosw))
+ done(1);
+
+ /*
+ ** Print total matched if not printing each matched message number.
+ */
+ if (!listsw) {
+ printf("%d hit%s\n", mp->numsel, mp->numsel == 1 ? "" : "s");
+ }
+
+ context_replace(curfolder, folder); /* update current folder */
+ seq_save(mp); /* synchronize message sequences */
+ context_save(); /* save the context file */
+ folder_free(mp); /* free folder/message structure */
+ done(0);
+ return 1;
+}
+
+
+static void
+putzero_done(int status)
+{
+ if (listsw && status && !isatty(fileno(stdout)))
+ printf("0\n");
+ exit(status);
+}
+
+
+static struct swit parswit[] = {
+#define PRAND 0
+ { "and", 0 },
+#define PROR 1
+ { "or", 0 },
+#define PRNOT 2
+ { "not", 0 },
+#define PRLBR 3
+ { "lbrace", 0 },
+#define PRRBR 4
+ { "rbrace", 0 },
+#define PRCC 5
+ { "cc pattern", 0 },
+#define PRDATE 6
+ { "date pattern", 0 },
+#define PRFROM 7
+ { "from pattern", 0 },
+#define PRSRCH 8
+ { "search pattern", 0 },
+#define PRSUBJ 9
+ { "subject pattern", 0 },
+#define PRTO 10
+ { "to pattern", 0 },
+#define PROTHR 11
+ { "-othercomponent pattern", 15 },
+#define PRAFTR 12
+ { "after date", 0 },
+#define PRBEFR 13
+ { "before date", 0 },
+#define PRDATF 14
+ { "datefield field", 5 },
+ { NULL, 0 }
+};
+
+/* DEFINITIONS FOR PATTERN MATCHING */
+
+/*
+** We really should be using re_comp() and re_exec() here. Unfortunately,
+** pick advertises that lowercase characters matches characters of both
+** cases. Since re_exec() doesn't exhibit this behavior, we are stuck
+** with this version. Furthermore, we need to be able to save and restore
+** the state of the pattern matcher in order to do things "efficiently".
+**
+** The matching power of this algorithm isn't as powerful as the re_xxx()
+** routines (no \(xxx\) and \n constructs). Such is life.
+*/
+
+#define CCHR 2
+#define CDOT 4
+#define CCL 6
+#define NCCL 8
+#define CDOL 10
+#define CEOF 11
+
+#define STAR 01
+
+#define LBSIZE 1024
+#define ESIZE 1024
+
+
+static char linebuf[LBSIZE + 1];
+
+/* the magic array for case-independence */
+static char cc[] = {
+ 0000,0001,0002,0003,0004,0005,0006,0007,
+ 0010,0011,0012,0013,0014,0015,0016,0017,
+ 0020,0021,0022,0023,0024,0025,0026,0027,
+ 0030,0031,0032,0033,0034,0035,0036,0037,
+ 0040,0041,0042,0043,0044,0045,0046,0047,
+ 0050,0051,0052,0053,0054,0055,0056,0057,
+ 0060,0061,0062,0063,0064,0065,0066,0067,
+ 0070,0071,0072,0073,0074,0075,0076,0077,
+ 0100,0141,0142,0143,0144,0145,0146,0147,
+ 0150,0151,0152,0153,0154,0155,0156,0157,
+ 0160,0161,0162,0163,0164,0165,0166,0167,
+ 0170,0171,0172,0133,0134,0135,0136,0137,
+ 0140,0141,0142,0143,0144,0145,0146,0147,
+ 0150,0151,0152,0153,0154,0155,0156,0157,
+ 0160,0161,0162,0163,0164,0165,0166,0167,
+ 0170,0171,0172,0173,0174,0175,0176,0177,
+
+ 0200,0201,0202,0203,0204,0205,0206,0207,
+ 0210,0211,0212,0213,0214,0215,0216,0217,
+ 0220,0221,0222,0223,0224,0225,0226,0227,
+ 0230,0231,0232,0233,0234,0235,0236,0237,
+ 0240,0241,0242,0243,0244,0245,0246,0247,
+ 0250,0251,0252,0253,0254,0255,0256,0257,
+ 0260,0261,0262,0263,0264,0265,0266,0267,
+ 0270,0271,0272,0273,0274,0275,0276,0277,
+ 0300,0301,0302,0303,0304,0305,0306,0307,
+ 0310,0311,0312,0313,0314,0315,0316,0317,
+ 0320,0321,0322,0323,0324,0325,0326,0327,
+ 0330,0331,0332,0333,0334,0335,0336,0337,
+ 0340,0341,0342,0343,0344,0345,0346,0347,
+ 0350,0351,0352,0353,0354,0355,0356,0357,
+ 0360,0361,0362,0363,0364,0365,0366,0367,
+ 0370,0371,0372,0373,0374,0375,0376,0377,
+};
+
+/*
+** DEFINITIONS FOR NEXUS
+*/
+
+#define nxtarg() (*argp ? *argp++ : NULL)
+#define prvarg() argp--
+
+#define padvise if (!talked++) advise
+
+struct nexus {
+ int (*n_action)();
+
+ union {
+ /* for {OR,AND,NOT}action */
+ struct {
+ struct nexus *un_L_child;
+ struct nexus *un_R_child;
+ } st1;
+
+ /* for GREPaction */
+ struct {
+ int un_header;
+ int un_circf;
+ char un_expbuf[ESIZE];
+ char *un_patbuf;
+ } st2;
+
+ /* for TWSaction */
+ struct {
+ char *un_datef;
+ int un_after;
+ struct tws un_tws;
+ } st3;
+ } un;
+};
+
+#define n_L_child un.st1.un_L_child
+#define n_R_child un.st1.un_R_child
+
+#define n_header un.st2.un_header
+#define n_circf un.st2.un_circf
+#define n_expbuf un.st2.un_expbuf
+#define n_patbuf un.st2.un_patbuf
+
+#define n_datef un.st3.un_datef
+#define n_after un.st3.un_after
+#define n_tws un.st3.un_tws
+
+static int talked;
+static int pdebug = 0;
+
+static char *datesw;
+static char **argp;
+
+static struct nexus *head;
+
+/*
+** prototypes for date routines
+*/
+static struct tws *tws_parse(char *, int);
+static struct tws *tws_special(char *);
+
+/*
+** static prototypes
+*/
+static void PRaction(struct nexus *, int);
+static int gcompile(struct nexus *, char *);
+static int advance(char *, char *);
+static int cclass(unsigned char *, int, int);
+static int tcompile(char *, struct tws *, int);
+
+static struct nexus *parse(void);
+static struct nexus *nexp1(void);
+static struct nexus *nexp2(void);
+static struct nexus *nexp3(void);
+static struct nexus *newnexus(int (*)());
+
+static int ORaction();
+static int ANDaction();
+static int NOTaction();
+static int GREPaction();
+static int TWSaction();
+
+
+static int
+pcompile(char **vec, char *date)
+{
+ register char *cp;
+
+ if ((cp = getenv("MHPDEBUG")) && *cp)
+ pdebug++;
+
+ argp = vec;
+ if ((datesw = date) == NULL)
+ datesw = "date";
+ talked = 0;
+
+ if ((head = parse()) == NULL)
+ return (talked ? 0 : 1);
+
+ if (*argp) {
+ padvise(NULL, "%s unexpected", *argp);
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static struct nexus *
+parse(void)
+{
+ register char *cp;
+ register struct nexus *n, *o;
+
+ if ((n = nexp1()) == NULL || (cp = nxtarg()) == NULL)
+ return n;
+
+ if (*cp != '-') {
+ padvise(NULL, "%s unexpected", cp);
+ return NULL;
+ }
+
+ if (*++cp == '-')
+ goto header;
+ switch (smatch(cp, parswit)) {
+ case AMBIGSW:
+ ambigsw(cp, parswit);
+ talked++;
+ return NULL;
+ case UNKWNSW:
+ fprintf(stderr, "-%s unknown\n", cp);
+ talked++;
+ return NULL;
+
+ case PROR:
+ o = newnexus(ORaction);
+ o->n_L_child = n;
+ if ((o->n_R_child = parse()))
+ return o;
+ padvise(NULL, "missing disjunctive");
+ return NULL;
+
+header: ;
+ default:
+ prvarg();
+ return n;
+ }
+}
+
+static struct nexus *
+nexp1(void)
+{
+ register char *cp;
+ register struct nexus *n, *o;
+
+ if ((n = nexp2()) == NULL || (cp = nxtarg()) == NULL)
+ return n;
+
+ if (*cp != '-') {
+ padvise(NULL, "%s unexpected", cp);
+ return NULL;
+ }
+
+ if (*++cp == '-')
+ goto header;
+ switch (smatch(cp, parswit)) {
+ case AMBIGSW:
+ ambigsw(cp, parswit);
+ talked++;
+ return NULL;
+ case UNKWNSW:
+ fprintf(stderr, "-%s unknown\n", cp);
+ talked++;
+ return NULL;
+
+ case PRAND:
+ o = newnexus(ANDaction);
+ o->n_L_child = n;
+ if ((o->n_R_child = nexp1()))
+ return o;
+ padvise(NULL, "missing conjunctive");
+ return NULL;
+
+header: ;
+ default:
+ prvarg();
+ return n;
+ }
+}
+
+
+static struct nexus *
+nexp2(void)
+{
+ register char *cp;
+ register struct nexus *n;
+
+ if ((cp = nxtarg()) == NULL)
+ return NULL;
+
+ if (*cp != '-') {
+ prvarg();
+ return nexp3();
+ }
+
+ if (*++cp == '-')
+ goto header;
+ switch (smatch(cp, parswit)) {
+ case AMBIGSW:
+ ambigsw(cp, parswit);
+ talked++;
+ return NULL;
+ case UNKWNSW:
+ fprintf(stderr, "-%s unknown\n", cp);
+ talked++;
+ return NULL;
+
+ case PRNOT:
+ n = newnexus(NOTaction);
+ if ((n->n_L_child = nexp3()))
+ return n;
+ padvise(NULL, "missing negation");
+ return NULL;
+
+header: ;
+ default:
+ prvarg();
+ return nexp3();
+ }
+}
+
+static struct nexus *
+nexp3(void)
+{
+ int i;
+ register char *cp, *dp;
+ char buffer[BUFSIZ], temp[64];
+ register struct nexus *n;
+
+ if ((cp = nxtarg()) == NULL)
+ return NULL;
+
+ if (*cp != '-') {
+ padvise(NULL, "%s unexpected", cp);
+ return NULL;
+ }