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/* $OpenBSD: mail.c,v 1.9 2005/11/18 20:56:53 deraadt Exp $ */
/*
* This file is in the public domain.
*
* Author: Vincent Labrecque, April 2003
*/
#include <ctype.h>
#include "def.h"
#include "kbd.h"
#include "funmap.h"
void mail_init(void);
static int fake_self_insert(int, int);
static int mail(int, int);
int limit = 72;
/* mappings for all "printable" characters ('-' -> '~') */
static PF mail_fake[] = {
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert, fake_self_insert,
fake_self_insert, fake_self_insert, fake_self_insert
};
static struct KEYMAPE (1 + IMAPEXT) mailmap = {
1,
1 + IMAPEXT,
rescan,
{
{ ' ', '~', mail_fake, NULL }
}
};
int
mail_set_limit(int f, int n)
{
char buf[32], *rep;
if ((f & FFARG) != 0) {
limit = n;
} else {
if ((rep = eread("Margin: ", buf, sizeof(buf),
EFNEW | EFCR)) == NULL)
return (ABORT);
else if (rep[0] == '\0')
return (FALSE);
limit = atoi(rep);
}
return (TRUE);
}
void
mail_init(void)
{
funmap_add(mail, "mail-mode");
funmap_add(mail_set_limit, "mail-set-margin");
maps_add((KEYMAP *)&mailmap, "mail-mode");
}
/* ARGSUSED */
static int
mail(int f, int n)
{
curbp->b_modes[0] = name_mode("fundamental");
curbp->b_modes[1] = name_mode("mail-mode");
if (curbp->b_modes[1] == NULL) {
panic("can't happen");
mail_init();
curbp->b_modes[1] = name_mode("mail-mode");
}
curbp->b_nmodes = 1;
curwp->w_flag |= WFMODE;
return (TRUE);
}
static int
fake_self_insert(int f, int n)
{
int len = llength(curwp->w_dotp), col;
if (len + 1 > limit) {
/*
* Find the column at which we should cut, taking
* word boundaries into account.
*/
for (col = limit; col > 0; col--)
if (isspace(curwp->w_dotp->l_text[col])) {
col++; /* XXX - skip the space */
break;
}
if (curbp->b_doto == len) {
/*
* User is appending to the line; simple case.
*/
if (col) {
curwp->w_doto = col;
lnewline();
gotoeol(0, 1);
}
curwp->w_wrapline = NULL;
} else if ((len - col) > 0) {
/*
* User is shifting words by inserting in the middle.
*/
const char *trail;
int save_doto = curwp->w_doto;
struct line *save_dotp = curwp->w_dotp;
int tlen = len - col;
trail = curwp->w_dotp->l_text + col;
/*
* Create a new line or reuse the last wrapping line
* unless we could fill it.
*/
if (curwp->w_wrapline != lforw(curwp->w_dotp) ||
llength(curwp->w_wrapline) + tlen >= limit) {
curwp->w_doto = col;
lnewline();
curwp->w_wrapline = curwp->w_dotp;
curwp->w_dotp = save_dotp;
} else {
curwp->w_dotp = curwp->w_wrapline;
curwp->w_doto = 0;
/* insert trail */
linsert_str(trail, tlen);
/* delete trail */
curwp->w_dotp = save_dotp;
curwp->w_doto = col;
ldelete(tlen, KNONE); /* don't store in kill ring */
}
/*
* Readjust dot to point at where the user expects
* it to be after an insertion.
*/
curwp->w_doto = save_doto;
if (curwp->w_doto >= col) {
curwp->w_dotp = curwp->w_wrapline;
curwp->w_doto -= col;
}
}
}
selfinsert(f, n);
return (TRUE);
}
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