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index.c
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index.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 <me@mutt.org>
*
* @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/>.
*/
/**
* @page index2 GUI manage the main index (list of emails)
*
* GUI manage the main index (list of emails)
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "conn/lib.h"
#include "gui/lib.h"
#include "mutt.h"
#include "debug/lib.h"
#include "index.h"
#include "alias.h"
#include "browser.h"
#include "commands.h"
#include "context.h"
#include "format_flags.h"
#include "globals.h"
#include "hdrline.h"
#include "hook.h"
#include "init.h"
#include "keymap.h"
#include "mutt_header.h"
#include "mutt_logging.h"
#include "mutt_mailbox.h"
#include "mutt_menu.h"
#include "mutt_thread.h"
#include "muttlib.h"
#include "mx.h"
#include "opcodes.h"
#include "options.h"
#include "pager.h"
#include "pattern.h"
#include "progress.h"
#include "protos.h"
#include "query.h"
#include "recvattach.h"
#include "score.h"
#include "send.h"
#include "sort.h"
#include "status.h"
#include "ncrypt/lib.h"
#ifdef USE_SIDEBAR
#include "sidebar.h"
#endif
#ifdef USE_POP
#include "pop/lib.h"
#endif
#ifdef USE_IMAP
#include "imap/lib.h"
#endif
#ifdef USE_NOTMUCH
#include "notmuch/lib.h"
#endif
#ifdef USE_NNTP
#include "nntp/lib.h"
#endif
#ifdef ENABLE_NLS
#include <libintl.h>
#endif
#ifdef USE_INOTIFY
#include "monitor.h"
#endif
#ifdef USE_AUTOCRYPT
#include "autocrypt/lib.h"
#endif
/* These Config Variables are only used in index.c */
bool C_ChangeFolderNext; ///< Config: Suggest the next folder, rather than the first when using '<change-folder>'
bool C_CollapseAll; ///< Config: Collapse all threads when entering a folder
bool C_CollapseFlagged; ///< Config: Prevent the collapse of threads with flagged emails
bool C_CollapseUnread; ///< Config: Prevent the collapse of threads with unread emails
char *C_MarkMacroPrefix; ///< Config: Prefix for macros using '<mark-message>'
bool C_PgpAutoDecode; ///< Config: Automatically decrypt PGP messages
bool C_UncollapseJump; ///< Config: When opening a thread, jump to the next unread message
bool C_UncollapseNew; ///< Config: Open collapsed threads when new mail arrives
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
#define UNREAD(email) mutt_thread_contains_unread(Context, email)
#define FLAGGED(email) mutt_thread_contains_flagged(Context, email)
#define CAN_COLLAPSE(email) \
((C_CollapseUnread || !UNREAD(email)) && (C_CollapseFlagged || !FLAGGED(email)))
// clang-format off
/**
* typedef CheckFlags - Checks to perform before running a function
*/
typedef uint8_t CheckFlags; ///< Flags, e.g. #CHECK_IN_MAILBOX
#define CHECK_NO_FLAGS 0 ///< No flags are set
#define CHECK_IN_MAILBOX (1 << 0) ///< Is there a mailbox open?
#define CHECK_MSGCOUNT (1 << 1) ///< Are there any messages?
#define CHECK_VISIBLE (1 << 2) ///< Is the selected message visible in the index?
#define CHECK_READONLY (1 << 3) ///< Is the mailbox readonly?
#define CHECK_ATTACH (1 << 4) ///< Is the user in message-attach mode?
// clang-format on
/**
* get_cur_email - Get the currently-selected Email
* @param ctx Context
* @param menu Menu
* @retval ptr Email
* @retval NULL No Email selected, or bad index values
*/
static struct Email *get_cur_email(struct Context *ctx, struct Menu *menu)
{
if (!ctx || !ctx->mailbox || !menu)
return NULL;
return mutt_get_virt_email(ctx->mailbox, menu->current);
}
/**
* prereq - Check the pre-requisites for a function
* @param ctx Mailbox
* @param menu Current Menu
* @param checks Checks to perform, see #CheckFlags
* @retval bool true if the checks pass successfully
*/
static bool prereq(struct Context *ctx, struct Menu *menu, CheckFlags checks)
{
bool result = true;
if (checks & (CHECK_MSGCOUNT | CHECK_VISIBLE | CHECK_READONLY))
checks |= CHECK_IN_MAILBOX;
if ((checks & CHECK_IN_MAILBOX) && (!ctx || !ctx->mailbox))
{
mutt_error(_("No mailbox is open"));
result = false;
}
if (result && (checks & CHECK_MSGCOUNT) && (ctx->mailbox->msg_count == 0))
{
mutt_error(_("There are no messages"));
result = false;
}
if (result && (checks & CHECK_VISIBLE) && (menu->current >= ctx->mailbox->vcount))
{
mutt_error(_("No visible messages"));
result = false;
}
if (result && (checks & CHECK_READONLY) && ctx->mailbox->readonly)
{
mutt_error(_("Mailbox is read-only"));
result = false;
}
if (result && (checks & CHECK_ATTACH) && OptAttachMsg)
{
mutt_error(_("Function not permitted in attach-message mode"));
result = false;
}
if (!result)
mutt_flushinp();
return result;
}
/**
* check_acl - Check the ACLs for a function
* @param ctx Mailbox
* @param acl ACL, see #AclFlags
* @param msg Error message for failure
* @retval bool true if the function is permitted
*/
static bool check_acl(struct Context *ctx, AclFlags acl, const char *msg)
{
if (!ctx || !ctx->mailbox)
return false;
if (!(ctx->mailbox->rights & acl))
{
/* L10N: %s is one of the CHECK_ACL entries below. */
mutt_error(_("%s: Operation not permitted by ACL"), msg);
return false;
}
return true;
}
/**
* collapse_all - Collapse/uncollapse all threads
* @param ctx Context
* @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 #C_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 Context *ctx, struct Menu *menu, int toggle)
{
if (!ctx || !ctx->mailbox || (ctx->mailbox->msg_count == 0) || !menu)
return;
struct Email *e_cur = get_cur_email(ctx, menu);
if (!e_cur)
return;
struct MuttThread *thread = NULL, *top = NULL;
int final;
/* Figure out what the current message would be after folding / unfolding,
* so that we can restore the cursor in a sane way afterwards. */
if (e_cur->collapsed && toggle)
final = mutt_uncollapse_thread(ctx, e_cur);
else if (CAN_COLLAPSE(e_cur))
final = mutt_collapse_thread(ctx, e_cur);
else
final = e_cur->vnum;
if (final == -1)
return;
struct Email *base = mutt_get_virt_email(ctx->mailbox, final);
if (!base)
return;
/* Iterate all threads, perform collapse/uncollapse as needed */
top = ctx->tree;
ctx->collapsed = toggle ? !ctx->collapsed : true;
struct Email *e = NULL;
while ((thread = top))
{
while (!thread->message)
thread = thread->child;
e = thread->message;
if (e->collapsed != ctx->collapsed)
{
if (e->collapsed)
mutt_uncollapse_thread(ctx, e);
else if (CAN_COLLAPSE(e))
mutt_collapse_thread(ctx, e);
}
top = top->next;
}
/* Restore the cursor */
mutt_set_vnum(ctx);
for (int i = 0; i < ctx->mailbox->vcount; i++)
{
e = mutt_get_virt_email(ctx->mailbox, i);
if (!e)
break;
if (e->index == base->index)
{
menu->current = i;
break;
}
}
menu->redraw = REDRAW_INDEX | REDRAW_STATUS;
}
/**
* ci_next_undeleted - Find the next undeleted email
* @param ctx Context
* @param msgno Message number to start at
* @retval >=0 Message number of next undeleted email
* @retval -1 No more undeleted messages
*/
static int ci_next_undeleted(struct Context *ctx, int msgno)
{
if (!ctx || !ctx->mailbox)
return -1;
for (int i = msgno + 1; i < ctx->mailbox->vcount; i++)
{
struct Email *e = mutt_get_virt_email(ctx->mailbox, i);
if (!e)
continue;
if (!e->deleted)
return i;
}
return -1;
}
/**
* ci_previous_undeleted - Find the previous undeleted email
* @param ctx Context
* @param msgno Message number to start at
* @retval >=0 Message number of next undeleted email
* @retval -1 No more undeleted messages
*/
static int ci_previous_undeleted(struct Context *ctx, int msgno)
{
if (!ctx || !ctx->mailbox)
return -1;
for (int i = msgno - 1; i >= 0; i--)
{
struct Email *e = mutt_get_virt_email(ctx->mailbox, i);
if (!e)
continue;
if (!e->deleted)
return i;
}
return -1;
}
/**
* ci_first_message - Get index of first new message
* @param ctx Context
* @retval num 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(struct Context *ctx)
{
if (!ctx || !ctx->mailbox || (ctx->mailbox->msg_count == 0))
return 0;
int old = -1;
for (int i = 0; i < ctx->mailbox->vcount; i++)
{
struct Email *e = mutt_get_virt_email(ctx->mailbox, i);
if (!e)
continue;
if (!e->read && !e->deleted)
{
if (!e->old)
return i;
if (old == -1)
old = i;
}
}
if (old != -1)
return old;
/* If C_Sort is reverse and not threaded, the latest message is first.
* If C_Sort is threaded, the latest message is first if exactly one
* of C_Sort and C_SortAux are reverse. */
if (((C_Sort & SORT_REVERSE) && ((C_Sort & SORT_MASK) != SORT_THREADS)) ||
(((C_Sort & SORT_MASK) == SORT_THREADS) && ((C_Sort ^ C_SortAux) & SORT_REVERSE)))
{
return 0;
}
else
{
return ctx->mailbox->vcount ? ctx->mailbox->vcount - 1 : 0;
}
return 0;
}
/**
* mx_toggle_write - Toggle the mailbox's readonly flag
* @param m Mailbox
* @retval 0 Success
* @retval -1 Error
*
* This should be in mx.c, but it only gets used here.
*/
static int mx_toggle_write(struct Mailbox *m)
{
if (!m)
return -1;
if (m->readonly)
{
mutt_error(_("Can't toggle write on a readonly mailbox"));
return -1;
}
if (m->dontwrite)
{
m->dontwrite = false;
mutt_message(_("Changes to folder will be written on folder exit"));
}
else
{
m->dontwrite = true;
mutt_message(_("Changes to folder will not be written"));
}
return 0;
}
/**
* resort_index - Resort the index
* @param ctx Context
* @param menu Current Menu
*/
static void resort_index(struct Context *ctx, struct Menu *menu)
{
if (!ctx || !ctx->mailbox)
return;
struct Email *e_cur = get_cur_email(ctx, menu);
menu->current = -1;
mutt_sort_headers(ctx, false);
/* Restore the current message */
for (int i = 0; i < ctx->mailbox->vcount; i++)
{
struct Email *e = mutt_get_virt_email(ctx->mailbox, i);
if (!e)
continue;
if (e == e_cur)
{
menu->current = i;
break;
}
}
if (((C_Sort & SORT_MASK) == SORT_THREADS) && (menu->current < 0))
menu->current = mutt_parent_message(ctx, e_cur, false);
if (menu->current < 0)
menu->current = ci_first_message(ctx);
menu->redraw |= REDRAW_INDEX | REDRAW_STATUS;
}
/**
* update_index_threaded - Update the index (if threaded)
* @param ctx Mailbox
* @param check Flags, e.g. #MUTT_REOPENED
* @param oldcount How many items are currently in the index
*/
static void update_index_threaded(struct Context *ctx, int check, int oldcount)
{
struct Email **save_new = NULL;
/* save the list of new messages */
if ((check != MUTT_REOPENED) && oldcount && (ctx->pattern || C_UncollapseNew))
{
save_new = mutt_mem_malloc(sizeof(struct Email *) * (ctx->mailbox->msg_count - oldcount));
for (int i = oldcount; i < ctx->mailbox->msg_count; i++)
save_new[i - oldcount] = ctx->mailbox->emails[i];
}
/* Sort first to thread the new messages, because some patterns
* require the threading information.
*
* If the mailbox was reopened, need to rethread from scratch. */
mutt_sort_headers(ctx, (check == MUTT_REOPENED));
if (ctx->pattern)
{
for (int i = (check == MUTT_REOPENED) ? 0 : oldcount; i < ctx->mailbox->msg_count; i++)
{
struct Email *e = NULL;
if ((check != MUTT_REOPENED) && oldcount)
e = save_new[i - oldcount];
else
e = ctx->mailbox->emails[i];
if (mutt_pattern_exec(SLIST_FIRST(ctx->limit_pattern),
MUTT_MATCH_FULL_ADDRESS, ctx->mailbox, e, NULL))
{
/* vnum will get properly set by mutt_set_vnum(), which
* is called by mutt_sort_headers() just below. */
e->vnum = 1;
e->limited = true;
}
}
/* Need a second sort to set virtual numbers and redraw the tree */
mutt_sort_headers(ctx, false);
}
/* uncollapse threads with new mail */
if (C_UncollapseNew)
{
if (check == MUTT_REOPENED)
{
ctx->collapsed = false;
for (struct MuttThread *h = ctx->tree; h; h = h->next)
{
struct MuttThread *j = h;
for (; !j->message; j = j->child)
;
mutt_uncollapse_thread(ctx, j->message);
}
mutt_set_vnum(ctx);
}
else if (oldcount)
{
for (int j = 0; j < (ctx->mailbox->msg_count - oldcount); j++)
{
if (!ctx->pattern || save_new[j]->limited)
{
mutt_uncollapse_thread(ctx, save_new[j]);
}
}
mutt_set_vnum(ctx);
}
}
FREE(&save_new);
}
/**
* update_index_unthreaded - Update the index (if unthreaded)
* @param ctx Mailbox
* @param check Flags, e.g. #MUTT_REOPENED
* @param oldcount How many items are currently in the index
*/
static void update_index_unthreaded(struct Context *ctx, int check, int oldcount)
{
/* 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)
{
int padding = mx_msg_padding_size(ctx->mailbox);
for (int i = (check == MUTT_REOPENED) ? 0 : oldcount; i < ctx->mailbox->msg_count; i++)
{
if (i == 0)
{
ctx->mailbox->vcount = 0;
ctx->vsize = 0;
}
struct Email *e = ctx->mailbox->emails[i];
if (!e)
break;
if (mutt_pattern_exec(SLIST_FIRST(ctx->limit_pattern),
MUTT_MATCH_FULL_ADDRESS, ctx->mailbox, e, NULL))
{
assert(ctx->mailbox->vcount < ctx->mailbox->msg_count);
e->vnum = ctx->mailbox->vcount;
ctx->mailbox->v2r[ctx->mailbox->vcount] = i;
e->limited = true;
ctx->mailbox->vcount++;
struct Body *b = e->content;
ctx->vsize += b->length + b->offset - b->hdr_offset + padding;
}
}
}
/* if the mailbox was reopened, need to rethread from scratch */
mutt_sort_headers(ctx, (check == MUTT_REOPENED));
}
/**
* update_index - Update the index
* @param menu Current Menu
* @param ctx Mailbox
* @param check Flags, e.g. #MUTT_REOPENED
* @param oldcount How many items are currently in the index
* @param index_hint Remember our place in the index
*/
void update_index(struct Menu *menu, struct Context *ctx, int check, int oldcount, int index_hint)
{
if (!menu || !ctx)
return;
/* take note of the current message */
if (oldcount)
{
if (menu->current < ctx->mailbox->vcount)
menu->oldcurrent = index_hint;
else
oldcount = 0; /* invalid message number! */
}
if ((C_Sort & SORT_MASK) == SORT_THREADS)
update_index_threaded(ctx, check, oldcount);
else
update_index_unthreaded(ctx, check, oldcount);
menu->current = -1;
if (oldcount)
{
/* restore the current message to the message it was pointing to */
for (int i = 0; i < ctx->mailbox->vcount; i++)
{
struct Email *e = mutt_get_virt_email(ctx->mailbox, i);
if (!e)
continue;
if (e->index == menu->oldcurrent)
{
menu->current = i;
break;
}
}
}
if (menu->current < 0)
menu->current = ci_first_message(Context);
}
/**
* mailbox_index_observer - Listen for Mailbox changes - Implements ::observer_t
*
* If a Mailbox is closed, then set a pointer to NULL.
*/
static int mailbox_index_observer(struct NotifyCallback *nc)
{
if (!nc->global_data)
return -1;
if ((nc->event_type != NT_MAILBOX) || (nc->event_subtype != NT_MAILBOX_CLOSED))
return 0;
struct Mailbox **ptr = nc->global_data;
if (!ptr || !*ptr)
return 0;
*ptr = NULL;
return 0;
}
/**
* main_change_folder - Change to a different mailbox
* @param menu Current Menu
* @param m Mailbox
* @param op Operation, e.g. OP_MAIN_CHANGE_FOLDER_READONLY
* @param buf Folder to change to
* @param buflen Length of buffer
* @param oldcount How many items are currently in the index
* @param index_hint Remember our place in the index
* @param pager_return Return to the pager afterwards
* @retval 0 Success
* @retval -1 Error
*/
static int main_change_folder(struct Menu *menu, int op, struct Mailbox *m,
char *buf, size_t buflen, int *oldcount,
int *index_hint, bool *pager_return)
{
#ifdef USE_NNTP
if (OptNews)
{
OptNews = false;
nntp_expand_path(buf, buflen, &CurrentNewsSrv->conn->account);
}
else
#endif
{
mx_path_canon(buf, buflen, C_Folder, NULL);
}
enum MailboxType type = mx_path_probe(buf);
if ((type == MUTT_MAILBOX_ERROR) || (type == MUTT_UNKNOWN))
{
// Try to see if the buffer matches a description before we bail.
// We'll receive a non-null pointer if there is a corresponding mailbox.
m = mailbox_find_name(buf);
if (m)
{
mutt_str_strfcpy(buf, mailbox_path(m), buflen);
}
else
{
// Bail.
mutt_error(_("%s is not a mailbox"), buf);
return -1;
}
}
/* past this point, we don't return to the pager on error */
if (pager_return)
*pager_return = false;
/* keepalive failure in mutt_enter_fname may kill connection. */
if (Context && Context->mailbox && (mutt_buffer_is_empty(&Context->mailbox->pathbuf)))
ctx_free(&Context);
if (Context && Context->mailbox)
{
char *new_last_folder = NULL;
#ifdef USE_INOTIFY
int monitor_remove_rc = mutt_monitor_remove(NULL);
#endif
#ifdef USE_COMP_MBOX
if (Context->mailbox->compress_info && (Context->mailbox->realpath[0] != '\0'))
new_last_folder = mutt_str_strdup(Context->mailbox->realpath);
else
#endif
new_last_folder = mutt_str_strdup(mailbox_path(Context->mailbox));
*oldcount = Context->mailbox->msg_count;
int check = mx_mbox_close(&Context);
if (check != 0)
{
#ifdef USE_INOTIFY
if (monitor_remove_rc == 0)
mutt_monitor_add(NULL);
#endif
if ((check == MUTT_NEW_MAIL) || (check == MUTT_REOPENED))
update_index(menu, Context, check, *oldcount, *index_hint);
FREE(&new_last_folder);
OptSearchInvalid = true;
menu->redraw |= REDRAW_INDEX | REDRAW_STATUS;
return 0;
}
FREE(&LastFolder);
LastFolder = new_last_folder;
}
mutt_str_replace(&CurrentFolder, buf);
mutt_sleep(0);
if (m)
{
/* If the `folder-hook` were to call `unmailboxes`, then the Mailbox (`m`)
* could be deleted, leaving `m` dangling. */
// TODO: Refactor this function to avoid the need for an observer
notify_observer_add(m->notify, mailbox_index_observer, &m);
}
mutt_folder_hook(buf, m ? m->name : NULL);
if (m)
{
/* `m` is still valid, but we won't need the observer again before the end
* of the function. */
notify_observer_remove(m->notify, mailbox_index_observer, &m);
}
int flags = MUTT_OPEN_NO_FLAGS;
if (C_ReadOnly || (op == OP_MAIN_CHANGE_FOLDER_READONLY))
flags = MUTT_READONLY;
#ifdef USE_NOTMUCH
if (op == OP_MAIN_VFOLDER_FROM_QUERY_READONLY)
flags = MUTT_READONLY;
#endif
bool free_m = false;
if (!m)
{
m = mx_path_resolve(buf);
free_m = true;
}
Context = mx_mbox_open(m, flags);
if (Context)
{
menu->current = ci_first_message(Context);
#ifdef USE_INOTIFY
mutt_monitor_add(NULL);
#endif
}
else
{
menu->current = 0;
if (free_m)
mailbox_free(&m);
}
if (((C_Sort & SORT_MASK) == SORT_THREADS) && C_CollapseAll)
collapse_all(Context, menu, 0);
#ifdef USE_SIDEBAR
mutt_sb_set_open_mailbox(Context ? Context->mailbox : NULL);
#endif
mutt_clear_error();
mutt_mailbox_check(Context ? Context->mailbox : NULL, MUTT_MAILBOX_CHECK_FORCE); /* force the mailbox check after we have changed the folder */
menu->redraw = REDRAW_FULL;
OptSearchInvalid = true;
return 0;
}
/**
* index_make_entry - Format a menu item for the index list - Implements Menu::make_entry()
*/
void index_make_entry(char *buf, size_t buflen, struct Menu *menu, int line)
{
if (!Context || !Context->mailbox || !menu || (line < 0) ||
(line >= Context->mailbox->email_max))
return;
struct Email *e = mutt_get_virt_email(Context->mailbox, line);
if (!e)
return;
MuttFormatFlags flags = MUTT_FORMAT_ARROWCURSOR | MUTT_FORMAT_INDEX;
struct MuttThread *tmp = NULL;
if (((C_Sort & SORT_MASK) == SORT_THREADS) && e->tree)
{
flags |= MUTT_FORMAT_TREE; /* display the thread tree */
if (e->display_subject)
flags |= MUTT_FORMAT_FORCESUBJ;
else
{
const int reverse = C_Sort & SORT_REVERSE;
int edgemsgno;
if (reverse)
{
if (menu->top + menu->pagelen > menu->max)
edgemsgno = Context->mailbox->v2r[menu->max - 1];
else
edgemsgno = Context->mailbox->v2r[menu->top + menu->pagelen - 1];
}
else
edgemsgno = Context->mailbox->v2r[menu->top];
for (tmp = e->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))
{
flags |= MUTT_FORMAT_FORCESUBJ;
break;
}
else if (tmp->message->vnum >= 0)
break;
}
if (flags & MUTT_FORMAT_FORCESUBJ)
{
for (tmp = e->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->vnum >= 0)
{
flags &= ~MUTT_FORMAT_FORCESUBJ;
break;
}
}
}
}
}
mutt_make_string_flags(buf, buflen, menu->win_index->state.cols,
NONULL(C_IndexFormat), Context, Context->mailbox, e, flags);
}
/**
* index_color - Calculate the colour for a line of the index - Implements Menu::color()
*/
int index_color(int line)
{
if (!Context || !Context->mailbox || (line < 0))
return 0;
struct Email *e = mutt_get_virt_email(Context->mailbox, line);
if (!e)
return 0;
if (e->pair)
return e->pair;
mutt_set_header_color(Context->mailbox, e);
return e->pair;
}
/**
* 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, size_t buflen)
{
if (!buf)
return;
size_t i = 0;
size_t offset = 0;
bool found = false;
size_t chunks = 0;
size_t len = 0;
struct StatusSyntax
{
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, &Colors->status_list, 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 StatusSyntax));
}
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))
{