/*
- * m_convert.c -- parse a message range or sequence and set SELECTED
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
- */
+** m_convert.c -- parse a message range or sequence and set SELECTED
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
+
+
+/* FIXME: This code needs rework! Rewrite as a parser? */
#include <h/mh.h>
+#include <ctype.h>
/*
- * error codes for sequence
- * and message range processing
- */
+** error codes for sequence
+** and message range processing
+*/
#define BADMSG (-2)
#define BADRNG (-3)
#define BADNEW (-4)
#define FIRST 1
#define LAST 2
-#define getnew(mp) (mp->hghmsg + 1)
+#define getbeyond(mp) ((mp)->hghmsg + 1)
-static int convdir; /* convert direction */
-static char *delimp;
+static int convdir; /* convert direction */
+static char *delimp; /* delimiter pointer */
/*
- * static prototypes
- */
-static int m_conv (struct msgs *, char *, int);
-static int attr (struct msgs *, char *);
-
+** static prototypes
+*/
+static int m_conv(struct msgs *, char *, int);
+static int attr(struct msgs *, char *);
int
-m_convert (struct msgs *mp, char *name)
+m_convert(struct msgs *mp, char *name)
{
int first, last, found, range, err;
unsigned char *bp;
char *cp;
/* check if user defined sequence */
- err = attr (mp, cp = name);
-
+ err = attr(mp, cp = name);
if (err == -1)
return 0;
else if (err < 0)
goto badmsg;
- else if (err > 0)
+ else if (err > 0) {
+ /* it had been a user-defined sequence: we're finished */
return 1;
+ }
/*
- * else err == 0, so continue
- */
-
- found = 0;
+ ** else err == 0, so continue
+ ** here we know: it is no user-defined seq
+ */
/*
- * Check for special "new" sequence, which
- * is valid only if ALLOW_NEW is set.
- */
- if ((mp->msgflags & ALLOW_NEW) && !strcmp (cp, "new")) {
- if ((err = first = getnew (mp)) <= 0)
- goto badmsg;
- else
- goto single;
+ ** Handle the special beyond sequence, which is valid only if
+ ** ALLOW_BEYOND is set, and can appear only on its own.
+ ** Also, it is available in any folder.
+ */
+ if ((mp->msgflags & ALLOW_BEYOND) && strcmp(cp, seq_beyond)==0) {
+ set_selected(mp, getbeyond(mp));
+ return 1;
}
- if (!strcmp (cp, "all"))
- cp = "first-last";
+ /*
+ ** Handle the special all sequence: replace `a' with `f-l'
+ */
+ if (strcmp(cp, seq_all)==0) {
+ cp = concat(seq_first, "-", seq_last, NULL);
+ }
- if ((err = first = m_conv (mp, cp, FIRST)) <= 0)
+ if ((err = first = m_conv(mp, cp, FIRST)) <= 0)
goto badmsg;
cp = delimp;
- if (*cp != '\0' && *cp != '-' && *cp != ':') {
-badelim:
- advise (NULL, "illegal argument delimiter: `%c'(0%o)", *delimp, *delimp);
- return 0;
- }
-
- if (*cp == '-') {
+ switch (*cp) {
+ case '-':
+ /* global range */
cp++;
- if ((err = last = m_conv (mp, cp, LAST)) <= 0) {
+ if ((err = last = m_conv(mp, cp, LAST)) <= 0) {
badmsg:
switch (err) {
case BADMSG:
- advise (NULL, "no %s message", cp);
+ advise(NULL, "no %s message", cp);
break;
case BADNUM:
- advise (NULL, "message %s doesn't exist", cp);
+ advise(NULL, "message %s doesn't exist", cp);
break;
case BADRNG:
- advise (NULL, "message %s out of range 1-%d", cp, mp->hghmsg);
+ advise(NULL, "message %s out of range 1-%d",
+ cp, mp->hghmsg);
break;
case BADLST:
badlist:
- advise (NULL, "bad message list %s", name);
+ advise(NULL, "bad message list %s", name);
break;
case BADNEW:
- advise (NULL, "folder full, no %s message", name);
+ advise(NULL, "folder full, no %s message",
+ name);
break;
default:
- advise (NULL, "no messages match specification");
+ advise(NULL, "no messages match specification");
}
return 0;
}
goto badelim;
if (first > mp->hghmsg || last < mp->lowmsg) {
rangerr:
- advise (NULL, "no messages in range %s", name);
+ advise(NULL, "no messages in range %s", name);
return 0;
}
last = mp->hghmsg;
if (first < mp->lowmsg)
first = mp->lowmsg;
+ break;
- } else if (*cp == ':') {
+ case ':':
+ /* anchored range */
cp++;
if (*cp == '-') {
convdir = -1;
convdir = 1;
cp++;
}
- if ((range = atoi (bp = cp)) == 0)
+ if ((range = atoi(bp = cp)) == 0)
goto badlist;
- while (isdigit (*bp))
+ while (isdigit(*bp))
bp++;
if (*bp)
goto badelim;
if ((convdir > 0 && first > mp->hghmsg)
- || (convdir < 0 && first < mp->lowmsg))
+ || (convdir < 0 && first < mp->lowmsg))
goto rangerr;
/* tighten the range to search */
first = mp->hghmsg;
for (last = first; last >= mp->lowmsg && last <= mp->hghmsg;
- last += convdir)
- if (does_exist (mp, last))
- if (--range <= 0)
- break;
+ last += convdir)
+ if (does_exist(mp, last) && (--range <= 0))
+ break;
if (last < mp->lowmsg)
last = mp->lowmsg;
if (last > mp->hghmsg)
last = first;
first = range;
}
- } else {
+ break;
-single:
+ case '\0':
+ /* single name */
/*
- * Single Message
- *
- * If ALLOW_NEW is set, then allow selecting of an
- * empty slot. If ALLOW_NEW is not set, then we
- * check if message is in-range and exists.
- */
- if (mp->msgflags & ALLOW_NEW) {
- set_select_empty (mp, first);
- } else {
- if (first > mp->hghmsg
- || first < mp->lowmsg
- || !(does_exist (mp, first))) {
- if (!strcmp (name, "cur") || !strcmp (name, "."))
- advise (NULL, "no %s message", name);
- else
- advise (NULL, "message %d doesn't exist", first);
- return 0;
- }
+ ** AFAICS, the only cases to reach here are:
+ ** f, l, p, n, c, b
+ ** But I'm not sure. --meillo
+ */
+ /*
+ ** Single Message
+ **
+ ** Check if message is in-range and exists.
+ */
+ if (first > mp->hghmsg || first < mp->lowmsg ||
+ !does_exist(mp, first)) {
+ if (strcmp(name, seq_cur)==0)
+ advise(NULL, "no current message");
+ else
+ /* this case seems to never be reached */
+ advise(NULL, "message %d doesn't exist",
+ first);
+ return 0;
}
last = first; /* range of 1 */
+ break;
+
+ default:
+badelim:
+ advise(NULL, "illegal argument delimiter: `%c'(0%o)",
+ *delimp, *delimp);
+ return 0;
+ break;
}
- /*
- * Cycle through the range and select the messages
- * that exist. If ALLOW_NEW is set, then we also check
- * if we are selecting an empty slot.
- */
- for (; first <= last; first++) {
- if (does_exist (mp, first) ||
- ((mp->msgflags & ALLOW_NEW) && is_select_empty (mp, first))) {
- if (!is_selected (mp, first)) {
- set_selected (mp, first);
- mp->numsel++;
- if (mp->lowsel == 0 || first < mp->lowsel)
- mp->lowsel = first;
- if (first > mp->hghsel)
- mp->hghsel = first;
- }
+ /* Cycle through the range and select the messages that exist. */
+ for (found=0; first <= last; first++) {
+ if (does_exist(mp, first)) {
+ set_selected(mp, first);
found++;
}
}
-
if (!found)
goto rangerr;
}
/*
- * Convert the various message names to
- * their numeric values.
- *
- * n (integer)
- * prev
- * next
- * first
- * last
- * cur
- * . (same as cur)
- */
-
+** Convert the various message names to their numeric values.
+**
+** 42 (any integer)
+** p
+** n
+** f
+** l
+** c
+*/
static int
-m_conv (struct msgs *mp, char *str, int call)
+m_conv(struct msgs *mp, char *str, int call)
{
- register int i;
- register unsigned char *cp, *bp;
- unsigned char buf[16];
+ int i;
+ unsigned char *cp, *bp;
+ unsigned char buf[16]; /* for reserved sequence name */
convdir = 1;
cp = bp = str;
- if (isdigit (*cp)) {
- while (isdigit (*bp))
+
+ /* Handle an integer */
+ if (isdigit(*cp)) {
+ while (isdigit(*bp))
bp++;
delimp = bp;
- i = atoi (cp);
+ i = atoi(cp);
if (i <= mp->hghmsg)
return i;
else if (*delimp || call == LAST)
return mp->hghmsg + 1;
- else if (mp->msgflags & ALLOW_NEW)
+ else if (mp->msgflags & ALLOW_BEYOND)
return BADRNG;
else
return BADNUM;
}
-#ifdef LOCALE
- /* doesn't enforce lower case */
- for (bp = buf; (isalpha(*cp) || *cp == '.')
- && (bp - buf < sizeof(buf) - 1); )
-#else
- for (bp = buf; ((*cp >= 'a' && *cp <= 'z') || *cp == '.')
- && (bp - buf < sizeof(buf) - 1); )
-#endif /* LOCALE */
- {
+ for (bp = buf; isalpha(*cp) && (bp - buf < (int)sizeof(buf) - 1); ) {
*bp++ = *cp++;
}
*bp++ = '\0';
delimp = cp;
- if (!strcmp (buf, "first"))
- return (mp->hghmsg || !(mp->msgflags & ALLOW_NEW)
- ? mp->lowmsg : BADMSG);
+ /* Which one of the reserved names is it? */
+ if (strcmp(buf, seq_first)==0) {
+ return (mp->hghmsg || !(mp->msgflags & ALLOW_BEYOND) ?
+ mp->lowmsg : BADMSG);
- if (!strcmp (buf, "last")) {
+ } else if (strcmp(buf, seq_last)==0) {
convdir = -1;
- return (mp->hghmsg || !(mp->msgflags & ALLOW_NEW) ? mp->hghmsg : BADMSG);
- }
+ return (mp->hghmsg || !(mp->msgflags & ALLOW_BEYOND) ?
+ mp->hghmsg : BADMSG);
- if (!strcmp (buf, "cur") || !strcmp (buf, "."))
+ } else if (strcmp(buf, seq_cur)==0) {
return (mp->curmsg > 0 ? mp->curmsg : BADMSG);
- if (!strcmp (buf, "prev")) {
+ } else if (strcmp(buf, seq_prev)==0) {
convdir = -1;
- for (i = (mp->curmsg <= mp->hghmsg) ? mp->curmsg - 1 : mp->hghmsg;
- i >= mp->lowmsg; i--) {
- if (does_exist (mp, i))
+ for (i = (mp->curmsg <= mp->hghmsg) ?
+ mp->curmsg - 1 : mp->hghmsg;
+ i >= mp->lowmsg; i--) {
+ if (does_exist(mp, i))
return i;
}
return BADMSG;
- }
- if (!strcmp (buf, "next")) {
- for (i = (mp->curmsg >= mp->lowmsg) ? mp->curmsg + 1 : mp->lowmsg;
- i <= mp->hghmsg; i++) {
- if (does_exist (mp, i))
+ } else if (strcmp(buf, seq_next)==0) {
+ for (i = (mp->curmsg >= mp->lowmsg) ?
+ mp->curmsg + 1 : mp->lowmsg;
+ i <= mp->hghmsg; i++) {
+ if (does_exist(mp, i))
return i;
}
return BADMSG;
- }
- return BADLST;
+ } else {
+ return BADLST;
+ }
}
/*
- * Handle user defined sequences.
- * They can take the following forms:
- *
- * seq
- * seq:prev
- * seq:next
- * seq:first
- * seq:last
- * seq:+n
- * seq:-n
- * seq:n
- */
-
+** Handle user defined sequences.
+** They can take the following forms:
+**
+** seq
+** seq:p
+** seq:n
+** seq:f
+** seq:l
+** seq:+42
+** seq:-42
+** seq:42
+**
+** (`42' being an arbitrary integer)
+*/
static int
-attr (struct msgs *mp, char *cp)
+attr(struct msgs *mp, char *cp)
{
- register unsigned char *dp;
+ unsigned char *dp;
char *bp = NULL;
- register int i, j;
+ int i, j;
int found;
int inverted = 0;
int range = 0; /* no range */
int first = 0;
- /* hack for "cur-name", "cur-n", etc. */
- if (!strcmp (cp, "cur"))
+ /* hack for "c-..." */
+ if (strcmp(cp, seq_cur)==0)
return 0;
- if (ssequal ("cur:", cp)) /* this code need to be rewritten... */
+ /* "c:..." -- this code need to be rewritten... */
+ if (strncmp(seq_cur, cp, strlen(seq_cur))==0 &&
+ cp[strlen(seq_cur)] == ':') {
return 0;
+ }
/* Check for sequence negation */
- if ((dp = context_find (nsequence)) && *dp != '\0' && ssequal (dp, cp)) {
+ if (!(dp = context_find(nsequence))) {
+ dp = seq_neg; /* use default */
+ }
+ if (*dp && strncmp(cp, dp, strlen(dp))==0) {
inverted = 1;
- cp += strlen (dp);
+ cp += strlen(dp);
}
convdir = 1; /* convert direction */
range = 1;
/*
- * seq:prev (or)
- * seq:next (or)
- * seq:first (or)
- * seq:last
- */
- if (isalpha (*dp)) {
- if (!strcmp (dp, "prev")) {
+ ** seq:p (or)
+ ** seq:n (or)
+ ** seq:f (or)
+ ** seq:l
+ */
+ if (isalpha(*dp)) {
+ if (strcmp(dp, seq_prev)==0) {
convdir = -1;
first = (mp->curmsg > 0) && (mp->curmsg <= mp->hghmsg)
? mp->curmsg - 1 : mp->hghmsg;
- } else if (!strcmp (dp, "next")) {
+ } else if (strcmp(dp, seq_next)==0) {
convdir = 1;
first = (mp->curmsg >= mp->lowmsg)
? mp->curmsg + 1 : mp->lowmsg;
- } else if (!strcmp (dp, "first")) {
+ } else if (strcmp(dp, seq_first)==0) {
convdir = 1;
- } else if (!strcmp (dp, "last")) {
+ } else if (strcmp(dp, seq_last)==0) {
convdir = -1;
} else
return BADLST;
} else {
/*
- * seq:n (or)
- * seq:+n (or)
- * seq:-n
- */
+ ** seq:42 (or)
+ ** seq:+42 (or)
+ ** seq:-42
+ */
if (*dp == '+')
dp++;
else if (*dp == '-') {
}
if ((range = atoi(dp)) == 0)
return BADLST;
- while (isdigit (*dp))
+ while (isdigit(*dp))
dp++;
if (*dp)
return BADLST;
*bp = '\0'; /* temporarily terminate sequence name */
}
- i = seq_getnum (mp, cp); /* get index of sequence */
+ i = seq_getnum(mp, cp); /* get index of sequence */
if (bp)
*bp = ':'; /* restore sequence name */
found = 0; /* count the number we select for this argument */
for (j = first ? first : (convdir > 0) ? mp->lowmsg : mp->hghmsg;
- j >= mp->lowmsg && j <= mp->hghmsg; j += convdir) {
- if (does_exist (mp, j)
- && inverted ? !in_sequence (mp, i, j) : in_sequence (mp, i, j)) {
- if (!is_selected (mp, j)) {
- set_selected (mp, j);
- mp->numsel++;
- if (mp->lowsel == 0 || j < mp->lowsel)
- mp->lowsel = j;
- if (j > mp->hghsel)
- mp->hghsel = j;
- }
+ j >= mp->lowmsg && j <= mp->hghmsg; j += convdir) {
+ if (does_exist(mp, j)
+ && inverted ? !in_sequence(mp, i, j) :
+ in_sequence(mp, i, j)) {
+ set_selected(mp, j);
found++;
/*
- * If we have a range, then break out
- * once we've found enough.
- */
+ ** If we have a range, then break out
+ ** once we've found enough.
+ */
if (range && found >= range)
break;
}
}
- if (found > 0)
+ if (found)
return found;
if (first)
return BADMSG;
- advise (NULL, "sequence %s %s", cp, inverted ? "full" : "empty");
+ advise(NULL, "sequence %s %s", cp, inverted ? "full" : "empty");
return -1;
}
projects / mmh / blobdiff