Use sysexits.h for better exit-codes
[mmh] / uip / pick.c
index 73babad..a487adc 100644 (file)
@@ -9,17 +9,14 @@
 #include <h/mh.h>
 #include <h/tws.h>
 #include <h/utils.h>
+#include <unistd.h>
+#include <locale.h>
+#include <sysexits.h>
 
-#ifdef TIME_WITH_SYS_TIME
+#ifdef HAVE_SYS_TIME_H
 # include <sys/time.h>
-# include <time.h>
-#else
-# ifdef TM_IN_SYS_TIME
-#  include <sys/time.h>
-# else
-#  include <time.h>
-# endif
 #endif
+#include <time.h>
 
 static struct swit switches[] = {
 #define ANDSW  0
@@ -51,23 +48,23 @@ static struct swit switches[] = {
 #define BEFRSW  13
        { "before date", 0 },
 #define DATFDSW  14
-       { "datefield field", 5 },
+       { "datefield field", 5 },  /* 5 chars required to differ from -date */
 #define SEQSW  15
        { "sequence name", 0 },
 #define PUBLSW  16
        { "public", 0 },
 #define NPUBLSW  17
-       { "nopublic", 0 },
+       { "nopublic", 2 },
 #define ZEROSW  18
        { "zero", 0 },
 #define NZEROSW  19
-       { "nozero", 0 },
+       { "nozero", 2 },
 #define LISTSW  20
        { "list", 0 },
 #define NLISTSW  21
-       { "nolist", 0 },
+       { "nolist", 2 },
 #define VERSIONSW  22
-       { "version", 0 },
+       { "Version", 0 },
 #define HELPSW  23
        { "help", 0 },
        { NULL, 0 }
@@ -82,12 +79,13 @@ static int pmatches(FILE *, int, long, long);
 
 static int listsw = -1;
 
-static void putzero_done(int) NORETURN;
+void putzero_done();
 
 int
 main(int argc, char **argv)
 {
-       int publicsw = -1, zerosw = 1, seqp = 0, vecp = 0;
+       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;
@@ -96,11 +94,11 @@ main(int argc, char **argv)
        struct msgs *mp;
        register FILE *fp;
 
-       done=putzero_done;
+        if (atexit(putzero_done) != 0) {
+               adios(EX_OSERR, NULL, "atexit failed");
+       }
 
-#ifdef LOCALE
        setlocale(LC_ALL, "");
-#endif
        invo_name = mhbasename(argv[0]);
 
        /* read user profile/context */
@@ -119,19 +117,19 @@ main(int argc, char **argv)
                        case AMBIGSW:
                                ambigsw(cp, switches);
                                listsw = 0;  /* HACK */
-                               done(1);
+                               exit(EX_USAGE);
                        case UNKWNSW:
-                               adios(NULL, "-%s unknown", cp);
+                               adios(EX_USAGE, 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);
+                               exit(argc == 2 ? EX_OK : EX_USAGE);
                        case VERSIONSW:
                                print_version(invo_name);
                                listsw = 0;  /* HACK */
-                               done(1);
+                               exit(argc == 2 ? EX_OK : EX_USAGE);
 
                        case CCSW:
                        case DATESW:
@@ -145,12 +143,12 @@ main(int argc, char **argv)
                                vec[vecp++] = --cp;
                        pattern:
                                if (!(cp = *argp++)) /* allow -xyz arguments */
-                                       adios(NULL, "missing argument to %s",
+                                       adios(EX_USAGE, NULL, "missing argument to %s",
                                                        argp[-2]);
                                vec[vecp++] = cp;
                                continue;
                        case OTHRSW:
-                               adios(NULL, "internal error!");
+                               adios(EX_SOFTWARE, NULL, "internal error!");
 
                        case ANDSW:
                        case ORSW:
@@ -162,15 +160,15 @@ main(int argc, char **argv)
 
                        case SEQSW:
                                if (!(cp = *argp++) || *cp == '-')
-                                       adios(NULL, "missing argument to %s",
+                                       adios(EX_USAGE, 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);
+                                       adios(EX_USAGE, NULL, "too many sequences (more than %d) specified", NUMATTRS);
 
                                if (!seq_nameok(cp))
-                                 done(1);
+                                       exit(EX_USAGE);
 
                                seqs[seqp++] = cp;
                                continue;
@@ -197,7 +195,7 @@ main(int argc, char **argv)
                }
                if (*cp == '+' || *cp == '@') {
                        if (folder)
-                               adios(NULL, "only one folder at a time!");
+                               adios(EX_USAGE, NULL, "only one folder at a time!");
                        else
                                folder = getcpy(expandfol(cp));
                } else
@@ -217,20 +215,20 @@ main(int argc, char **argv)
        maildir = toabsdir(folder);
 
        if (chdir(maildir) == NOTOK)
-               adios(maildir, "unable to change directory to");
+               adios(EX_OSERR, 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);
+               adios(EX_IOERR, NULL, "unable to read folder %s", folder);
 
        /* check for empty folder */
        if (mp->nummsg == 0)
-               adios(NULL, "no messages in %s", folder);
+               adios(EX_DATAERR, 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);
+                       exit(EX_USAGE);
        seq_setprev(mp);  /* set the previous-sequence */
 
        /*
@@ -241,11 +239,11 @@ main(int argc, char **argv)
                listsw = !seqp;
 
        if (publicsw == 1 && is_readonly(mp))
-               adios(NULL, "folder %s is read-only, so -public not allowed",
+               adios(EX_NOPERM, NULL, "folder %s is read-only, so -public not allowed",
                                folder);
 
        if (!pcompile(vec, NULL))
-               done(1);
+               exit(EX_SOFTWARE);
 
        lo = mp->lowsel;
        hi = mp->hghsel;
@@ -287,7 +285,7 @@ main(int argc, char **argv)
        mp->hghsel = hi;
 
        if (mp->numsel <= 0)
-               adios(NULL, "no messages match specification");
+               adios(EX_DATAERR, NULL, "no messages match specification");
 
        seqs[seqp] = NULL;
 
@@ -296,7 +294,7 @@ main(int argc, char **argv)
        */
        for (seqp = 0; seqs[seqp]; seqp++)
                if (!seq_addsel(mp, seqs[seqp], publicsw, zerosw))
-                       done(1);
+                       exit(EX_USAGE);
 
        /*
        ** Print total matched if not printing each matched message number.
@@ -309,17 +307,16 @@ main(int argc, char **argv)
        seq_save(mp);  /* synchronize message sequences */
        context_save();  /* save the context file */
        folder_free(mp);  /* free folder/message structure */
-       done(0);
-       return 1;
+       listsw = 0; /* HACK */
+       return 0;
 }
 
 
-static void
-putzero_done(int status)
+void
+putzero_done()
 {
-       if (listsw && status && !isatty(fileno(stdout)))
+       if (listsw && !isatty(fileno(stdout)))
                printf("0\n");
-       exit(status);
 }
 
 
@@ -481,23 +478,23 @@ static struct nexus *head;
 /*
 ** prototypes for date routines
 */
-static struct tws *tws_parse();
-static struct tws *tws_special();
+static struct tws *tws_parse(char *, int);
+static struct tws *tws_special(char *);
 
 /*
 ** static prototypes
 */
-static void PRaction();
-static int gcompile();
-static int advance();
-static int cclass();
-static int tcompile();
-
-static struct nexus *parse();
-static struct nexus *nexp1();
-static struct nexus *nexp2();
-static struct nexus *nexp3();
-static struct nexus *newnexus();
+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();
@@ -772,7 +769,7 @@ newnexus(int (*action)())
        register struct nexus *p;
 
        if ((p = (struct nexus *) calloc((size_t) 1, sizeof *p)) == NULL)
-               adios(NULL, "unable to allocate component storage");
+               adios(EX_OSERR, NULL, "unable to allocate component storage");
 
        p->n_action = action;
        return p;
@@ -834,7 +831,7 @@ PRaction(struct nexus *n, int level)
        if (n->n_action == TWSaction) {
                fprintf(stderr, "TEMPORAL(%s) %s: %s\n",
                                n->n_after ? "after" : "before", n->n_datef,
-                               dasctime(&n->n_tws, TW_NULL));
+                               dasctime(&n->n_tws));
                return;
        }
        fprintf(stderr, "UNKNOWN(0x%x)\n",
@@ -1274,7 +1271,7 @@ plist
                        return 0;
 
                default:
-                       adios(NULL, "internal error -- you lose");
+                       adios(EX_SOFTWARE, NULL, "internal error -- you lose");
                }
                break;
        }