add free_field as standard for struct field
[mmh] / uip / sortm.c
index 734b63b..6d45d35 100644 (file)
@@ -13,6 +13,7 @@
 #include <ctype.h>
 #include <sys/stat.h>
 #include <locale.h>
+#include <sysexits.h>
 
 #ifdef HAVE_SYS_PARAM_H
 # include <sys/param.h>
@@ -98,31 +99,31 @@ main(int argc, char **argv)
                        switch (smatch(++cp, switches)) {
                        case AMBIGSW:
                                ambigsw(cp, switches);
-                               exit(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);
-                               exit(0);
+                               exit(argc == 2 ? EX_OK : EX_USAGE);
                        case VERSIONSW:
                                print_version(invo_name);
-                               exit(0);
+                               exit(argc == 2 ? EX_OK : EX_USAGE);
 
                        case DATESW:
                                if (datesw)
-                                       adios(NULL, "only one date field at a time");
+                                       adios(EX_USAGE, NULL, "only one date field at a time");
                                if (!(datesw = *argp++) || *datesw == '-')
-                                       adios(NULL, "missing argument to %s",
+                                       adios(EX_USAGE, NULL, "missing argument to %s",
                                                        argp[-2]);
                                continue;
 
                        case TEXTSW:
                                if (subjsort)
-                                       adios(NULL, "only one text field at a time");
+                                       adios(EX_USAGE, NULL, "only one text field at a time");
                                if (!(subjsort = *argp++) || *subjsort == '-')
-                                       adios(NULL, "missing argument to %s",
+                                       adios(EX_USAGE, NULL, "missing argument to %s",
                                                        argp[-2]);
                                continue;
 
@@ -132,7 +133,7 @@ main(int argc, char **argv)
 
                        case LIMSW:
                                if (!(cp = *argp++) || *cp == '-')
-                                               adios(NULL, "missing argument to %s", argp[-2]);
+                                               adios(EX_USAGE, NULL, "missing argument to %s", argp[-2]);
                                while (*cp == '0')
                                        cp++;  /* skip any leading zeros */
                                if (!*cp) {  /* hit end of string */
@@ -140,7 +141,7 @@ main(int argc, char **argv)
                                        continue;
                                }
                                if (!isdigit(*cp) || !(datelimit = atoi(cp)))
-                                       adios(NULL, "impossible limit %s", cp);
+                                       adios(EX_USAGE, NULL, "impossible limit %s", cp);
                                datelimit *= 60*60*24;
                                continue;
                        case NLIMSW:
@@ -158,7 +159,7 @@ 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
@@ -174,29 +175,29 @@ 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]))
-                       exit(1);
+                       exit(EX_USAGE);
        seq_setprev(mp);  /* set the previous sequence */
 
        if ((nmsgs = read_hdrs(mp, datesw)) <= 0)
-               adios(NULL, "no messages to sort");
+               adios(EX_DATAERR, NULL, "no messages to sort");
 
        /*
        ** sort a list of pointers to our "messages to be sorted".
        */
-       dlist = (struct smsg **) mh_xmalloc((nmsgs+1) * sizeof(*dlist));
+       dlist = (struct smsg **) mh_xcalloc((size_t) (nmsgs+1), sizeof(*dlist));
        for (i = 0; i < nmsgs; i++)
                dlist[i] = &smsgs[i];
        dlist[nmsgs] = 0;
@@ -221,7 +222,7 @@ main(int argc, char **argv)
        */
        if (!submajor && subjsort) {  /* already date sorted */
                struct smsg **slist, **flist;
-               register struct smsg ***il, **fp, **dp;
+               struct smsg ***il, **fp, **dp;
 
                slist = (struct smsg **)
                                mh_xmalloc((nmsgs+1) * sizeof(*slist));
@@ -234,9 +235,9 @@ main(int argc, char **argv)
                ** the collection of messages with the same subj
                ** given a message number.
                */
-               il = (struct smsg ***) calloc(mp->hghsel+1, sizeof(*il));
+               il = (struct smsg ***) mh_xcalloc(mp->hghsel+1, sizeof(*il));
                if (! il)
-                       adios(NULL, "couldn't allocate msg list");
+                       adios(EX_OSERR, NULL, "couldn't allocate msg list");
                for (i = 0; i < nmsgs; i++)
                        il[slist[i]->s_msg] = &slist[i];
                /*
@@ -247,7 +248,7 @@ main(int argc, char **argv)
                                mh_xmalloc((nmsgs+1) * sizeof(*flist));
                fp = flist;
                for (dp = dlist; *dp;) {
-                       register struct smsg **s = il[(*dp++)->s_msg];
+                       struct smsg **s = il[(*dp++)->s_msg];
 
                        /* see if we already did this guy */
                        if (! s)
@@ -290,14 +291,12 @@ read_hdrs(struct msgs *mp, char *datesw)
 {
        int msgnum;
        struct tws tb;
-       register struct smsg *s;
+       struct smsg *s;
 
        twscopy(&tb, dlocaltimenow());
 
-       smsgs = (struct smsg *) calloc((size_t) (mp->hghsel - mp->lowsel + 2),
+       smsgs = (struct smsg *) mh_xcalloc((size_t) (mp->hghsel - mp->lowsel + 2),
                        sizeof(*smsgs));
-       if (smsgs == NULL)
-               adios(NULL, "unable to allocate sort storage");
 
        s = smsgs;
        for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
@@ -321,67 +320,54 @@ read_hdrs(struct msgs *mp, char *datesw)
 static int
 get_fields(char *datesw, int msg, struct smsg *smsg)
 {
-       register int state;
+       enum state state;
+       struct field f = free_field;
        int compnum;
-       char *msgnam, buf[BUFSIZ], nam[NAMESZ];
-       register struct tws *tw;
-       register char *datecomp = NULL, *subjcomp = NULL;
-       register FILE *in;
+       char *msgnam;
+       struct tws *tw;
+       char *datecomp = NULL, *subjcomp = NULL;
+       FILE *in;
 
        if ((in = fopen(msgnam = m_name(msg), "r")) == NULL) {
                admonish(msgnam, "unable to read message");
                return (0);
        }
-       for (compnum = 1, state = FLD;;) {
-               switch (state = m_getfld(state, nam, buf, sizeof(buf), in)) {
-               case FLD:
-               case FLDEOF:
-               case FLDPLUS:
-                       compnum++;
-                       if (!mh_strcasecmp(nam, datesw)) {
-                               datecomp = add(buf, datecomp);
-                               while (state == FLDPLUS) {
-                                       state = m_getfld(state, nam, buf,
-                                                       sizeof(buf), in);
-                                       datecomp = add(buf, datecomp);
-                               }
-                               if (!subjsort || subjcomp)
+       for (compnum = 1, state = FLD2;; compnum++) {
+               switch (state = m_getfld2(state, &f, in)) {
+               case FLD2:
+                       if (mh_strcasecmp(f.name, datesw)==0) {
+                               datecomp = getcpy(f.value);
+                               if (!subjsort || subjcomp) {
                                        break;
-                       } else if (subjsort && !mh_strcasecmp(nam, subjsort)) {
-                               subjcomp = add(buf, subjcomp);
-                               while (state == FLDPLUS) {
-                                       state = m_getfld(state, nam, buf,
-                                                       sizeof(buf), in);
-                                       subjcomp = add(buf, subjcomp);
                                }
-                               if (datecomp)
+                       } else if (subjsort && mh_strcasecmp(f.name,
+                                       subjsort)==0) {
+                               subjcomp = getcpy(f.value);
+                               if (datecomp) {
                                        break;
-                       } else {
-                               /* just flush this guy */
-                               while (state == FLDPLUS)
-                                       state = m_getfld(state, nam, buf,
-                                                       sizeof(buf), in);
+                               }
                        }
                        continue;
 
-               case BODY:
-               case BODYEOF:
-               case FILEEOF:
+               case BODY2:
+               case FILEEOF2:
                        break;
 
-               case LENERR:
-               case FMTERR:
-                       if (state == LENERR || state == FMTERR)
-                               admonish(NULL, "format error in message %d (header #%d)", msg, compnum);
-                       if (datecomp)
+               case LENERR2:
+               case FMTERR2:
+               case IOERR2:
+                       admonish(NULL, "format error in message %d (header #%d)", msg, compnum);
+                       if (datecomp) {
                                free(datecomp);
-                       if (subjcomp)
+                       }
+                       if (subjcomp) {
                                free(subjcomp);
+                       }
                        fclose(in);
                        return (0);
 
                default:
-                       adios(NULL, "internal error -- you lose");
+                       adios(EX_SOFTWARE, NULL, "internal error -- you lose");
                }
                break;
        }
@@ -408,8 +394,8 @@ get_fields(char *datesw, int msg, struct smsg *smsg)
                        ** leading "re:", everything but letters & smash
                        ** letters to lower case.
                        */
-                       register char  *cp, *cp2;
-                       register unsigned char c;
+                       char  *cp, *cp2;
+                       unsigned char c;
 
                        cp = subjcomp;
                        cp2 = subjcomp;
@@ -465,7 +451,7 @@ dsort(struct smsg **a, struct smsg **b)
 static int
 subsort(struct smsg **a, struct smsg **b)
 {
-       register int i;
+       int i;
 
        if ((i = strcmp((*a)->s_subj, (*b)->s_subj)))
                return (i);
@@ -476,7 +462,7 @@ subsort(struct smsg **a, struct smsg **b)
 static int
 txtsort(struct smsg **a, struct smsg **b)
 {
-       register int i;
+       int i;
 
        if ((i = strcmp((*a)->s_subj, (*b)->s_subj)))
                return (i);
@@ -509,7 +495,7 @@ rename_chain(struct msgs *mp, struct smsg **mlist, int msg, int endmsg)
                ext_hook("ref-hook", oldname, newbuf);
 
                if (rename(oldname, newname) == NOTOK)
-                       adios(newname, "unable to rename %s to", oldname);
+                       adios(EX_IOERR, newname, "unable to rename %s to", oldname);
 
                copy_msg_flags(mp, new, old);
                if (mp->curmsg == old)
@@ -568,7 +554,7 @@ rename_msgs(struct msgs *mp, struct smsg **mlist)
                ext_hook("ref-hook", f1, newbuf);
 
                if (rename(f1, tmpfil) == NOTOK)
-                       adios(tmpfil, "unable to rename %s to ", f1);
+                       adios(EX_IOERR, tmpfil, "unable to rename %s to ", f1);
 
                get_msg_flags(mp, &tmpset, old);
 
@@ -583,7 +569,7 @@ rename_msgs(struct msgs *mp, struct smsg **mlist)
                ext_hook("ref-hook", newbuf, f1);
 
                if (rename(tmpfil, m_name(new)) == NOTOK)
-                       adios(m_name(new), "unable to rename %s to", tmpfil);
+                       adios(EX_IOERR, m_name(new), "unable to rename %s to", tmpfil);
 
                set_msg_flags(mp, &tmpset, new);
                mp->msgflags |= SEQMOD;