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Mark: implement multi-message marks

--- a/mail.h

+++ b/mail.h

@@ -175,6 +175,7 @@

 void	mesgclear(Mesg*);

 void	mesgfree(Mesg*);

 void	mesgpath2name(char*, int, char*);

+int	mesgflagparse(char*, int*);

 /* mailbox */

 void	mbredraw(Mesg*, int, int);

--- a/mbox.c

+++ b/mbox.c

@@ -465,12 +465,14 @@

 }

 static void

-mark(char **f, int nf, int flags, int add)

+mark(char **f, int nf, char *fstr, int flags, int add)

 {

-	char *sel, *p, *q, *e;

-	int i, q0, q1;

+	char *sel, *p, *q, *e, *path;

+	int i, q0, q1, fd;

 	Mesg *m;

+	if(flags == 0)

+		return;

 	wingetsel(&mbox, &q0, &q1);

 	if(nf == 0){

 		sel = winreadsel(&mbox);

@@ -486,6 +488,14 @@

 					m->flags |= flags;

 				else

 					m->flags &= ~flags;

+				if(fstr != nil && strlen(fstr) != 0){

+					path = estrjoin(mbox.path, "/", m->name, "/flags", nil);

+					if((fd = open(path, OWRITE)) != -1){

+						fprint(fd, fstr);

+						close(fd);

+					}

+					free(path);

+				}

 				mbredraw(m, 0, 0);

 			}

 		}

@@ -492,7 +502,7 @@

 		free(sel);

 	}else for(i = 0; i < nf; i++){

 		if((m = mesglookup(f[i], nil)) != nil){

-			m->flags |= Ftodel;

+			m->flags |= flags;

 			mbredraw(m, 0, 0);

 		}

 	}

@@ -500,6 +510,22 @@

 }

 static void

+mbmark(char **f, int nf)

+{

+	int add, flg;

+

+	if(nf == 0){

+		fprint(2, "missing fstr");

+		return;

+	}

+	if((flg = mesgflagparse(f[0], &add)) == -1){

+		fprint(2, "Mark: invalid flags %s\n", f[0]);

+		return;

+	}

+	mark(f+1, nf-1, f[0], flg, add);

+}

+

+static void

 removemesg(Mesg *m)

 {

 	Mesg *c, *p;

@@ -565,13 +591,13 @@

 static void

 delmesg(char **f, int nf)

 {

-	mark(f, nf, Ftodel, 1);

+	mark(f, nf, nil, Ftodel, 1);

 }

 static void

 undelmesg(char **f, int nf)

 {

-	mark(f, nf, Ftodel, 0);

+	mark(f, nf, nil, Ftodel, 0);

 }

 static void

@@ -696,6 +722,7 @@

 	{"Del", quitall},

 	{"Redraw", redraw},

 	{"Next", nextunread},

+	{"Mark", mbmark},

 #ifdef NOTYET

 	{"Filter", filter},

 	{"Get", mbrefresh},

@@ -756,7 +783,7 @@

 	threadsetname("mbox %s", mbox.path);

 	wininit(&mbox, mbox.path);

-	wintagwrite(&mbox, "Put Mail Delmesg Undelmesg Save Next ");

+	wintagwrite(&mbox, "Put Mail Delmesg Undelmesg Next ");

 	showlist();

 	fprint(mbox.ctl, "clean\n");

 	proccreate(eventread, nil, Stack);

--- a/mesg.c

+++ b/mesg.c

@@ -325,6 +325,37 @@

 }

 static void

+markone(Mesg *m, char **f, int nf)

+{

+	int add, flg, fd;

+	char *path;

+

+	if(nf != 1){

+		fprint(2, "Mark: invalid arguments");

+		return;

+	}

+

+	if((flg = mesgflagparse(f[0], &add)) == -1){

+		fprint(2, "Mark: invalid flags %s\n", f[0]);

+		return;

+	}

+	if(add)

+		m->flags |= flg;

+	else

+		m->flags &= ~flg;

+	if(strlen(f[0]) != 0){

+		path = estrjoin(mbox.path, "/", m->name, "/flags", nil);

+		if((fd = open(path, OWRITE)) != -1){

+			fprint(fd, f[0]);

+			close(fd);

+		}

+		free(path);

+	}

+	mbredraw(m, 0, 0);

+}

+

+

+static void

 mesgquit(Mesg *m, char **, int)

 {

 	if(fprint(m->ctl, "del\n") == -1)

@@ -338,6 +369,7 @@

 	{"Reply",	reply},

 	{"Delmesg",	delmesg},

 	{"Del", 	mesgquit},

+	{"Mark",	markone},

 #ifdef NOTYET

 	{"Save",	nil},

 #endif

@@ -407,6 +439,35 @@

 	m->flags &= ~Fopen;

 	winclose(m);

 	threadexits(nil);

+}

+

+int

+mesgflagparse(char *fstr, int *add)

+{

+	int flg;

+

+	flg = 0;

+	*add = (*fstr == '+');

+	if(*fstr == '-' || *fstr == '+')

+		fstr++;

+	for(; *fstr; fstr++){

+		switch(*fstr){

+		case 'a':

+			flg |= Fresp;

+			break;

+		case 's':

+			flg |= Fseen;

+			break;

+		case 'D':

+			flg |= Ftodel;

+			memcpy(fstr, fstr +1, strlen(fstr));

+			break;

+		default:

+			fprint(2, "unknown flag %c", *fstr);

+			return -1;

+		}

+	}

+	return flg;

 }

 void