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curs_main.c
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/**
* @file
* GUI manage the main index (list of emails)
*
* @authors
* Copyright (C) 1996-2000,2002,2010,2012-2013 Michael R. Elkins <[email protected]>
*
* @copyright
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include <regex.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mutt/mutt.h"
#include "conn/conn.h"
#include "mutt.h"
#include "alias.h"
#include "body.h"
#include "buffy.h"
#include "context.h"
#include "envelope.h"
#include "format_flags.h"
#include "globals.h"
#include "header.h"
#include "keymap.h"
#include "mailbox.h"
#include "mutt_curses.h"
#include "mutt_menu.h"
#include "mx.h"
#include "ncrypt/ncrypt.h"
#include "opcodes.h"
#include "options.h"
#include "pager.h"
#include "pattern.h"
#include "protos.h"
#include "sort.h"
#include "tags.h"
#include "thread.h"
#ifdef HAVE_NCURSESW_NCURSES_H
#include <ncursesw/term.h>
#elif defined(HAVE_NCURSES_NCURSES_H)
#include <ncurses/term.h>
#elif !defined(USE_SLANG_CURSES)
#include <term.h>
#endif
#ifdef USE_SIDEBAR
#include "sidebar.h"
#endif
#ifdef USE_POP
#include "pop.h"
#endif
#ifdef USE_IMAP
#include "imap/imap.h"
#endif
#ifdef USE_NOTMUCH
#include "mutt_notmuch.h"
#endif
#ifdef USE_NNTP
#include "nntp.h"
#endif
static const char *No_mailbox_is_open = N_("No mailbox is open.");
static const char *There_are_no_messages = N_("There are no messages.");
static const char *Mailbox_is_read_only = N_("Mailbox is read-only.");
static const char *Function_not_permitted_in_attach_message_mode =
N_("Function not permitted in attach-message mode.");
static const char *NoVisible = N_("No visible messages.");
#define CHECK_IN_MAILBOX \
if (!Context) \
{ \
mutt_flushinp(); \
mutt_error(_(No_mailbox_is_open)); \
break; \
}
#define CHECK_MSGCOUNT \
if (!Context) \
{ \
mutt_flushinp(); \
mutt_error(_(No_mailbox_is_open)); \
break; \
} \
else if (!Context->msgcount) \
{ \
mutt_flushinp(); \
mutt_error(_(There_are_no_messages)); \
break; \
}
#define CHECK_VISIBLE \
if (Context && menu->current >= Context->vcount) \
{ \
mutt_flushinp(); \
mutt_error(_(NoVisible)); \
break; \
}
#define CHECK_READONLY \
if (Context->readonly) \
{ \
mutt_flushinp(); \
mutt_error(_(Mailbox_is_read_only)); \
break; \
}
#define CHECK_ACL(aclbit, action) \
if (!mutt_bit_isset(Context->rights, aclbit)) \
{ \
mutt_flushinp(); \
/* L10N: %s is one of the CHECK_ACL entries below. */ \
mutt_error(_("%s: Operation not permitted by ACL"), action); \
break; \
}
#define CHECK_ATTACH \
if (OPT_ATTACH_MSG) \
{ \
mutt_flushinp(); \
mutt_error(_(Function_not_permitted_in_attach_message_mode)); \
break; \
}
#define CURHDR Context->hdrs[Context->v2r[menu->current]]
#define UNREAD(h) mutt_thread_contains_unread(Context, h)
#define FLAGGED(h) mutt_thread_contains_flagged(Context, h)
#define CAN_COLLAPSE(header) \
((CollapseUnread || !UNREAD(header)) && (CollapseFlagged || !FLAGGED(header)))
/* de facto standard escapes for tsl/fsl */
static char *tsl = "\033]0;";
static char *fsl = "\007";
/**
* collapse/uncollapse all threads
* @param menu current menu
* @param toggle toggle collapsed state
*
* This function is called by the OP_MAIN_COLLAPSE_ALL command and on folder
* enter if the CollapseAll option is set. In the first case, the @a toggle
* parameter is 1 to actually toggle collapsed/uncollapsed state on all
* threads. In the second case, the @a toggle parameter is 0, actually turning
* this function into a one-way collapse.
*/
static void collapse_all(struct Menu *menu, int toggle)
{
struct Header *h = NULL, *base = NULL;
struct MuttThread *thread = NULL, *top = NULL;
int final;
if (!Context || (Context->msgcount == 0))
return;
/* Figure out what the current message would be after folding / unfolding,
* so that we can restore the cursor in a sane way afterwards. */
if (CURHDR->collapsed && toggle)
final = mutt_uncollapse_thread(Context, CURHDR);
else if (CAN_COLLAPSE(CURHDR))
final = mutt_collapse_thread(Context, CURHDR);
else
final = CURHDR->virtual;
base = Context->hdrs[Context->v2r[final]];
/* Iterate all threads, perform collapse/uncollapse as needed */
top = Context->tree;
Context->collapsed = toggle ? !Context->collapsed : true;
while ((thread = top) != NULL)
{
while (!thread->message)
thread = thread->child;
h = thread->message;
if (h->collapsed != Context->collapsed)
{
if (h->collapsed)
mutt_uncollapse_thread(Context, h);
else if (CAN_COLLAPSE(h))
mutt_collapse_thread(Context, h);
}
top = top->next;
}
/* Restore the cursor */
mutt_set_virtual(Context);
for (int j = 0; j < Context->vcount; j++)
{
if (Context->hdrs[Context->v2r[j]]->index == base->index)
{
menu->current = j;
break;
}
}
menu->redraw = REDRAW_INDEX | REDRAW_STATUS;
}
static int ci_next_undeleted(int msgno)
{
for (int i = msgno + 1; i < Context->vcount; i++)
if (!Context->hdrs[Context->v2r[i]]->deleted)
return i;
return -1;
}
static int ci_previous_undeleted(int msgno)
{
for (int i = msgno - 1; i >= 0; i--)
if (!Context->hdrs[Context->v2r[i]]->deleted)
return i;
return -1;
}
/**
* ci_first_message - Get index of first new message
*
* Return the index of the first new message, or failing that, the first
* unread message.
*/
static int ci_first_message(void)
{
if (Context && Context->msgcount)
{
int old = -1;
for (int i = 0; i < Context->vcount; i++)
{
if (!Context->hdrs[Context->v2r[i]]->read &&
!Context->hdrs[Context->v2r[i]]->deleted)
{
if (!Context->hdrs[Context->v2r[i]]->old)
return i;
else if (old == -1)
old = i;
}
}
if (old != -1)
return old;
/* If Sort is reverse and not threaded, the latest message is first.
* If Sort is threaded, the latest message is first iff exactly one
* of Sort and SortAux are reverse.
*/
if (((Sort & SORT_REVERSE) && (Sort & SORT_MASK) != SORT_THREADS) ||
((Sort & SORT_MASK) == SORT_THREADS && ((Sort ^ SortAux) & SORT_REVERSE)))
{
return 0;
}
else
{
return (Context->vcount ? Context->vcount - 1 : 0);
}
}
return 0;
}
/**
* mx_toggle_write - Toggle the mailbox's readonly flag
*
* This should be in mx.c, but it only gets used here.
*/
static int mx_toggle_write(struct Context *ctx)
{
if (!ctx)
return -1;
if (ctx->readonly)
{
mutt_error(_("Cannot toggle write on a readonly mailbox!"));
return -1;
}
if (ctx->dontwrite)
{
ctx->dontwrite = false;
mutt_message(_("Changes to folder will be written on folder exit."));
}
else
{
ctx->dontwrite = true;
mutt_message(_("Changes to folder will not be written."));
}
return 0;
}
static void resort_index(struct Menu *menu)
{
struct Header *current = CURHDR;
menu->current = -1;
mutt_sort_headers(Context, 0);
/* Restore the current message */
for (int i = 0; i < Context->vcount; i++)
{
if (Context->hdrs[Context->v2r[i]] == current)
{
menu->current = i;
break;
}
}
if ((Sort & SORT_MASK) == SORT_THREADS && menu->current < 0)
menu->current = mutt_parent_message(Context, current, 0);
if (menu->current < 0)
menu->current = ci_first_message();
menu->redraw |= REDRAW_INDEX | REDRAW_STATUS;
}
void update_index(struct Menu *menu, struct Context *ctx, int check, int oldcount, int index_hint)
{
/* store pointers to the newly added messages */
struct Header **save_new = NULL;
if (!menu || !ctx)
return;
/* take note of the current message */
if (oldcount)
{
if (menu->current < ctx->vcount)
menu->oldcurrent = index_hint;
else
oldcount = 0; /* invalid message number! */
}
/* We are in a limited view. Check if the new message(s) satisfy
* the limit criteria. If they do, set their virtual msgno so that
* they will be visible in the limited view */
if (ctx->pattern)
{
for (int i = (check == MUTT_REOPENED) ? 0 : oldcount; i < ctx->msgcount; i++)
{
if (!i)
ctx->vcount = 0;
if (mutt_pattern_exec(ctx->limit_pattern, MUTT_MATCH_FULL_ADDRESS, ctx,
ctx->hdrs[i], NULL))
{
assert(ctx->vcount < ctx->msgcount);
ctx->hdrs[i]->virtual = ctx->vcount;
ctx->v2r[ctx->vcount] = i;
ctx->hdrs[i]->limited = true;
ctx->vcount++;
struct Body *b = ctx->hdrs[i]->content;
ctx->vsize += b->length + b->offset - b->hdr_offset;
}
}
}
/* save the list of new messages */
if (UncollapseNew && oldcount && check != MUTT_REOPENED && ((Sort & SORT_MASK) == SORT_THREADS))
{
save_new = mutt_mem_malloc(sizeof(struct Header *) * (ctx->msgcount - oldcount));
for (int i = oldcount; i < ctx->msgcount; i++)
save_new[i - oldcount] = ctx->hdrs[i];
}
/* if the mailbox was reopened, need to rethread from scratch */
mutt_sort_headers(ctx, (check == MUTT_REOPENED));
/* uncollapse threads with new mail */
if (UncollapseNew && ((Sort & SORT_MASK) == SORT_THREADS))
{
if (check == MUTT_REOPENED)
{
struct MuttThread *h = NULL, *k = NULL;
ctx->collapsed = false;
for (h = ctx->tree; h; h = h->next)
{
for (k = h; !k->message; k = k->child)
;
mutt_uncollapse_thread(ctx, k->message);
}
mutt_set_virtual(ctx);
}
else if (oldcount)
{
for (int i = 0; i < ctx->msgcount - oldcount; i++)
{
for (int k = 0; k < ctx->msgcount; k++)
{
struct Header *h = ctx->hdrs[k];
if (h == save_new[i] && (!ctx->pattern || h->limited))
mutt_uncollapse_thread(ctx, h);
}
}
FREE(&save_new);
mutt_set_virtual(ctx);
}
}
menu->current = -1;
if (oldcount)
{
/* restore the current message to the message it was pointing to */
for (int i = 0; i < ctx->vcount; i++)
{
if (ctx->hdrs[ctx->v2r[i]]->index == menu->oldcurrent)
{
menu->current = i;
break;
}
}
}
if (menu->current < 0)
menu->current = ci_first_message();
}
static int main_change_folder(struct Menu *menu, int op, char *buf,
size_t buflen, int *oldcount, int *index_hint)
{
#ifdef USE_NNTP
if (OPT_NEWS)
{
OPT_NEWS = false;
nntp_expand_path(buf, buflen, &CurrentNewsSrv->conn->account);
}
else
#endif
mutt_expand_path(buf, buflen);
if (mx_get_magic(buf) <= 0)
{
mutt_error(_("%s is not a mailbox."), buf);
return -1;
}
/* keepalive failure in mutt_enter_fname may kill connection. #3028 */
if (Context && !Context->path)
FREE(&Context);
if (Context)
{
int check;
char *new_last_folder = NULL;
#ifdef USE_COMPRESSED
if (Context->compress_info && Context->realpath)
new_last_folder = mutt_str_strdup(Context->realpath);
else
#endif
new_last_folder = mutt_str_strdup(Context->path);
*oldcount = Context ? Context->msgcount : 0;
check = mx_close_mailbox(Context, index_hint);
if (check != 0)
{
if (check == MUTT_NEW_MAIL || check == MUTT_REOPENED)
update_index(menu, Context, check, *oldcount, *index_hint);
FREE(&new_last_folder);
OPT_SEARCH_INVALID = true;
menu->redraw |= REDRAW_INDEX | REDRAW_STATUS;
return 0;
}
FREE(&Context);
FREE(&LastFolder);
LastFolder = new_last_folder;
}
mutt_str_replace(&CurrentFolder, buf);
mutt_sleep(0);
/* Note that menu->menu may be MENU_PAGER if the change folder
* operation originated from the pager.
*
* However, exec commands currently use CurrentMenu to determine what
* functions are available, which is automatically set by the
* mutt_push/pop_current_menu() functions. If that changes, the menu
* would need to be reset here, and the pager cleanup code after the
* switch statement would need to be run. */
mutt_folder_hook(buf);
Context = mx_open_mailbox(
buf, (ReadOnly || (op == OP_MAIN_CHANGE_FOLDER_READONLY)) ? MUTT_READONLY : 0, NULL);
if (Context)
{
menu->current = ci_first_message();
}
else
menu->current = 0;
if (((Sort & SORT_MASK) == SORT_THREADS) && CollapseAll)
collapse_all(menu, 0);
#ifdef USE_SIDEBAR
mutt_sb_set_open_buffy();
#endif
mutt_clear_error();
mutt_buffy_check(true); /* force the buffy check after we have changed the folder */
menu->redraw = REDRAW_FULL;
OPT_SEARCH_INVALID = true;
return 0;
}
/**
* mutt_ts_capability - Check terminal capabilities
*
* terminal status capability check. terminfo must have been initialized.
*/
bool mutt_ts_capability(void)
{
const char *term = mutt_str_getenv("TERM");
char *tcaps = NULL;
#ifdef HAVE_USE_EXTENDED_NAMES
int tcapi;
#endif
char **termp = NULL;
char *known[] = {
"color-xterm", "cygwin", "eterm", "kterm", "nxterm",
"putty", "rxvt", "screen", "xterm", NULL,
};
/* If tsl is set, then terminfo says that status lines work. */
tcaps = tigetstr("tsl");
if (tcaps && tcaps != (char *) -1 && *tcaps)
{
/* update the static defns of tsl/fsl from terminfo */
tsl = tcaps;
tcaps = tigetstr("fsl");
if (tcaps && tcaps != (char *) -1 && *tcaps)
fsl = tcaps;
return true;
}
/* If XT (boolean) is set, then this terminal supports the standard escape. */
/* Beware: tigetflag returns -1 if XT is invalid or not a boolean. */
#ifdef HAVE_USE_EXTENDED_NAMES
use_extended_names(true);
tcapi = tigetflag("XT");
if (tcapi == 1)
return true;
#endif /* HAVE_USE_EXTENDED_NAMES */
/* Check term types that are known to support the standard escape without
* necessarily asserting it in terminfo. */
for (termp = known; termp; termp++)
{
if (term && *termp && (mutt_str_strncasecmp(term, *termp, strlen(*termp)) != 0))
return true;
}
/* not supported */
return false;
}
void mutt_ts_status(char *str)
{
/* If empty, do not set. To clear, use a single space. */
if (str == NULL || *str == '\0')
return;
fprintf(stderr, "%s%s%s", tsl, str, fsl);
}
void mutt_ts_icon(char *str)
{
/* If empty, do not set. To clear, use a single space. */
if (str == NULL || *str == '\0')
return;
/* icon setting is not supported in terminfo, so hardcode the escape - yuck */
fprintf(stderr, "\033]1;%s\007", str);
}
/**
* index_make_entry - Format a menu item for the index list
* @param[out] buf Buffer in which to save string
* @param[in] buflen Buffer length
* @param[in] menu Menu containing aliases
* @param[in] num Index into the menu
*/
void index_make_entry(char *buf, size_t buflen, struct Menu *menu, int num)
{
if (!Context || !menu || (num < 0) || (num >= Context->hdrmax))
return;
struct Header *h = Context->hdrs[Context->v2r[num]];
if (!h)
return;
enum FormatFlag flag = MUTT_FORMAT_MAKEPRINT | MUTT_FORMAT_ARROWCURSOR | MUTT_FORMAT_INDEX;
struct MuttThread *tmp = NULL;
if ((Sort & SORT_MASK) == SORT_THREADS && h->tree)
{
flag |= MUTT_FORMAT_TREE; /* display the thread tree */
if (h->display_subject)
flag |= MUTT_FORMAT_FORCESUBJ;
else
{
const int reverse = Sort & SORT_REVERSE;
int edgemsgno;
if (reverse)
{
if (menu->top + menu->pagelen > menu->max)
edgemsgno = Context->v2r[menu->max - 1];
else
edgemsgno = Context->v2r[menu->top + menu->pagelen - 1];
}
else
edgemsgno = Context->v2r[menu->top];
for (tmp = h->thread->parent; tmp; tmp = tmp->parent)
{
if (!tmp->message)
continue;
/* if no ancestor is visible on current screen, provisionally force
* subject... */
if (reverse ? tmp->message->msgno > edgemsgno : tmp->message->msgno < edgemsgno)
{
flag |= MUTT_FORMAT_FORCESUBJ;
break;
}
else if (tmp->message->virtual >= 0)
break;
}
if (flag & MUTT_FORMAT_FORCESUBJ)
{
for (tmp = h->thread->prev; tmp; tmp = tmp->prev)
{
if (!tmp->message)
continue;
/* ...but if a previous sibling is available, don't force it */
if (reverse ? tmp->message->msgno > edgemsgno : tmp->message->msgno < edgemsgno)
break;
else if (tmp->message->virtual >= 0)
{
flag &= ~MUTT_FORMAT_FORCESUBJ;
break;
}
}
}
}
}
mutt_make_string_flags(buf, buflen, NONULL(IndexFormat), Context, h, flag);
}
int index_color(int index_no)
{
if (!Context || (index_no < 0))
return 0;
struct Header *h = Context->hdrs[Context->v2r[index_no]];
if (h && h->pair)
return h->pair;
mutt_set_header_color(Context, h);
if (h)
return h->pair;
return 0;
}
/**
* mutt_draw_statusline - Draw a highlighted status bar
* @param cols Maximum number of screen columns
* @param buf Message to be displayed
* @param buflen Length of the buffer
*
* Users configure the highlighting of the status bar, e.g.
* color status red default "[0-9][0-9]:[0-9][0-9]"
*
* Where regexes overlap, the one nearest the start will be used.
* If two regexes start at the same place, the longer match will be used.
*/
void mutt_draw_statusline(int cols, const char *buf, int buflen)
{
size_t i = 0;
size_t offset = 0;
bool found = false;
size_t chunks = 0;
size_t len = 0;
struct Syntax
{
int color;
int first;
int last;
} *syntax = NULL;
if (!buf || !stdscr)
return;
do
{
struct ColorLine *cl = NULL;
found = false;
if (!buf[offset])
break;
/* loop through each "color status regex" */
STAILQ_FOREACH(cl, &ColorStatusList, entries)
{
regmatch_t pmatch[cl->match + 1];
if (regexec(&cl->regex, buf + offset, cl->match + 1, pmatch, 0) != 0)
continue; /* regex doesn't match the status bar */
int first = pmatch[cl->match].rm_so + offset;
int last = pmatch[cl->match].rm_eo + offset;
if (first == last)
continue; /* ignore an empty regex */
if (!found)
{
chunks++;
mutt_mem_realloc(&syntax, chunks * sizeof(struct Syntax));
}
i = chunks - 1;
if (!found || (first < syntax[i].first) ||
((first == syntax[i].first) && (last > syntax[i].last)))
{
syntax[i].color = cl->pair;
syntax[i].first = first;
syntax[i].last = last;
}
found = true;
}
if (syntax)
{
offset = syntax[i].last;
}
} while (found);
/* Only 'len' bytes will fit into 'cols' screen columns */
len = mutt_wstr_trunc(buf, buflen, cols, NULL);
offset = 0;
if ((chunks > 0) && (syntax[0].first > 0))
{
/* Text before the first highlight */
addnstr(buf, MIN(len, syntax[0].first));
attrset(ColorDefs[MT_COLOR_STATUS]);
if (len <= syntax[0].first)
goto dsl_finish; /* no more room */
offset = syntax[0].first;
}
for (i = 0; i < chunks; i++)
{
/* Highlighted text */
attrset(syntax[i].color);
addnstr(buf + offset, MIN(len, syntax[i].last) - offset);
if (len <= syntax[i].last)
goto dsl_finish; /* no more room */
size_t next;
if ((i + 1) == chunks)
{
next = len;
}
else
{
next = MIN(len, syntax[i + 1].first);
}
attrset(ColorDefs[MT_COLOR_STATUS]);
offset = syntax[i].last;
addnstr(buf + offset, next - offset);
offset = next;
if (offset >= len)
goto dsl_finish; /* no more room */
}
attrset(ColorDefs[MT_COLOR_STATUS]);
if (offset < len)
{
/* Text after the last highlight */
addnstr(buf + offset, len - offset);
}
int width = mutt_strwidth(buf);
if (width < cols)
{
/* Pad the rest of the line with whitespace */
mutt_paddstr(cols - width, "");
}
dsl_finish:
FREE(&syntax);
}
static const struct Mapping IndexHelp[] = {
{ N_("Quit"), OP_QUIT },
{ N_("Del"), OP_DELETE },
{ N_("Undel"), OP_UNDELETE },
{ N_("Save"), OP_SAVE },
{ N_("Mail"), OP_MAIL },
{ N_("Reply"), OP_REPLY },
{ N_("Group"), OP_GROUP_REPLY },
{ N_("Help"), OP_HELP },
{ NULL, 0 },
};
#ifdef USE_NNTP
struct Mapping IndexNewsHelp[] = {
{ N_("Quit"), OP_QUIT },
{ N_("Del"), OP_DELETE },
{ N_("Undel"), OP_UNDELETE },
{ N_("Save"), OP_SAVE },
{ N_("Post"), OP_POST },
{ N_("Followup"), OP_FOLLOWUP },
{ N_("Catchup"), OP_CATCHUP },
{ N_("Help"), OP_HELP },
{ NULL, 0 },
};
#endif
static void index_menu_redraw(struct Menu *menu)
{
if (menu->redraw & REDRAW_FULL)
{
menu_redraw_full(menu);
mutt_show_error();
}
#ifdef USE_SIDEBAR
if (menu->redraw & REDRAW_SIDEBAR)
{
mutt_sb_set_buffystats(Context);
menu_redraw_sidebar(menu);
}
#endif
if (Context && Context->hdrs && !(menu->current >= Context->vcount))
{
menu_check_recenter(menu);
if (menu->redraw & REDRAW_INDEX)
{
menu_redraw_index(menu);
menu->redraw |= REDRAW_STATUS;
}
else if (menu->redraw & (REDRAW_MOTION_RESYNCH | REDRAW_MOTION))
menu_redraw_motion(menu);
else if (menu->redraw & REDRAW_CURRENT)
menu_redraw_current(menu);
}
if (menu->redraw & REDRAW_STATUS)
{
char buf[LONG_STRING];
menu_status_line(buf, sizeof(buf), menu, NONULL(StatusFormat));
mutt_window_move(MuttStatusWindow, 0, 0);
SETCOLOR(MT_COLOR_STATUS);
mutt_draw_statusline(MuttStatusWindow->cols, buf, sizeof(buf));
NORMAL_COLOR;
menu->redraw &= ~REDRAW_STATUS;
if (TsEnabled && TSSupported)
{
menu_status_line(buf, sizeof(buf), menu, NONULL(TSStatusFormat));
mutt_ts_status(buf);
menu_status_line(buf, sizeof(buf), menu, NONULL(TSIconFormat));
mutt_ts_icon(buf);
}
}
menu->redraw = 0;
}
/**
* mutt_index_menu - Display a list of emails
*
* This function handles the message index window as well as commands returned
* from the pager (MENU_PAGER).
*/
int mutt_index_menu(void)
{
char buf[LONG_STRING], helpstr[LONG_STRING];
int flags;
int op = OP_NULL;
bool done = false; /* controls when to exit the "event" loop */
int i = 0, j;
bool tag = false; /* has the tag-prefix command been pressed? */
int newcount = -1;
int oldcount = -1;
int rc = -1;
struct Menu *menu = NULL;
char *cp = NULL; /* temporary variable. */
int index_hint; /* used to restore cursor position */
bool do_buffy_notify = true;
int close = 0; /* did we OP_QUIT or OP_EXIT out of this menu? */
int attach_msg = OPT_ATTACH_MSG;
menu = mutt_new_menu(MENU_MAIN);
menu->make_entry = index_make_entry;
menu->color = index_color;
menu->current = ci_first_message();
menu->help =
mutt_compile_help(helpstr, sizeof(helpstr), MENU_MAIN,
#ifdef USE_NNTP
(Context && (Context->magic == MUTT_NNTP)) ? IndexNewsHelp :
#endif
IndexHelp);
menu->custom_menu_redraw = index_menu_redraw;
mutt_push_current_menu(menu);
if (!attach_msg)
mutt_buffy_check(true); /* force the buffy check after we enter the folder */
if (((Sort & SORT_MASK) == SORT_THREADS) && CollapseAll)
{
collapse_all(menu, 0);
menu->redraw = REDRAW_FULL;
}
while (true)
{
/* Clear the tag prefix unless we just started it. Don't clear
* the prefix on a timeout (op==-2), but do clear on an abort (op==-1)
*/
if (tag && op != OP_TAG_PREFIX && op != OP_TAG_PREFIX_COND && op != -2)
tag = false;
/* check if we need to resort the index because just about
* any 'op' below could do mutt_enter_command(), either here or
* from any new menu launched, and change $sort/$sort_aux
*/
if (OPT_NEED_RESORT && Context && Context->msgcount && menu->current >= 0)
resort_index(menu);
menu->max = Context ? Context->vcount : 0;
oldcount = Context ? Context->msgcount : 0;
if (OPT_REDRAW_TREE && Context && Context->msgcount && (Sort & SORT_MASK) == SORT_THREADS)
{
mutt_draw_tree(Context);
menu->redraw |= REDRAW_STATUS;
OPT_REDRAW_TREE = false;
}
if (Context)
Context->menu = menu;
if (Context && !attach_msg)
{
int check;
/* check for new mail in the mailbox. If nonzero, then something has
* changed about the file (either we got new mail or the file was
* modified underneath us.)
*/
index_hint =
(Context->vcount && menu->current >= 0 && menu->current < Context->vcount) ?
CURHDR->index :
0;
check = mx_check_mailbox(Context, &index_hint);
if (check < 0)
{
if (!Context->path)
{
/* fatal error occurred */
FREE(&Context);
menu->redraw = REDRAW_FULL;
}
OPT_SEARCH_INVALID = true;
}
else if (check == MUTT_NEW_MAIL || check == MUTT_REOPENED || check == MUTT_FLAGS)
{
/* notify the user of new mail */