[PATCH 3 of 5] Adds label completion
# HG changeset patch
# User David Champion <dgc@xxxxxxxxxxxx>
# Date 1294082430 21600
# Branch HEAD
# Node ID cc2da8afdcb7db1a334d1d724bf27a7520877476
# Parent a8a30ebc2bade837fd32fcefcec66bf07eaff34a
Adds label completion.
A global label hash is added, to which labels are added as they're parsed
from a mailbox file or edited manually by the user. Reference counts are
kept in the hash table so that unused labels are removed from available
completions. Completion is available in the label editor only, but it
may be feasible to add for search expressions if the preceding text ends
with '~y'.
diff --git a/curs_main.c b/curs_main.c
--- a/curs_main.c
+++ b/curs_main.c
@@ -1148,6 +1148,9 @@
FREE (&Context);
}
+ if (Labels)
+ hash_destroy(&Labels, NULL);
+
mutt_sleep (0);
/* Set CurrentMenu to MENU_MAIN before executing any folder
@@ -1162,6 +1165,8 @@
(option (OPTREADONLY) || op ==
OP_MAIN_CHANGE_FOLDER_READONLY) ?
M_READONLY : 0, NULL)) != NULL)
{
+ Labels = hash_create(131, 0);
+ mutt_scan_labels(Context);
menu->current = ci_first_message ();
}
else
diff --git a/enter.c b/enter.c
--- a/enter.c
+++ b/enter.c
@@ -529,6 +529,24 @@
}
break;
}
+ else if (flags & M_LABEL && ch == OP_EDITOR_COMPLETE)
+ {
+ /* invoke the alias-menu to get more addresses */
+ for (i = state->curpos; i && state->wbuf[i-1] != ',' &&
+ state->wbuf[i-1] != ':'; i--)
+ ;
+ for (; i < state->lastchar && state->wbuf[i] == ' '; i++)
+ ;
+ my_wcstombs (buf, buflen, state->wbuf + i, state->curpos - i);
+ r = mutt_label_complete (buf, buflen, i, state->tabs);
+ replace_part (state, i, buf);
+ if (!r)
+ {
+ rv = 1;
+ goto bye;
+ }
+ break;
+ }
else if (flags & M_ALIAS && ch == OP_EDITOR_COMPLETE_QUERY)
{
/* invoke the query-menu to get more addresses */
diff --git a/globals.h b/globals.h
--- a/globals.h
+++ b/globals.h
@@ -149,6 +149,7 @@
WHERE const char *ReleaseDate;
WHERE HASH *Groups;
+WHERE HASH *Labels;
WHERE HASH *ReverseAlias;
WHERE LIST *AutoViewList INITVAL(0);
diff --git a/headers.c b/headers.c
--- a/headers.c
+++ b/headers.c
@@ -216,6 +216,31 @@
}
}
+static void label_ref_dec(char *label)
+{
+ uintptr_t count;
+
+ count = (uintptr_t)hash_find(Labels, label);
+ if (count)
+ {
+ hash_delete(Labels, label, NULL, NULL);
+ count--;
+ if (count > 0)
+ hash_insert(Labels, label, (void *)count, 0);
+ }
+}
+
+static void label_ref_inc(char *label)
+{
+ uintptr_t count;
+
+ count = (uintptr_t)hash_find(Labels, label);
+ if (count)
+ hash_delete(Labels, label, NULL, NULL);
+ count++; /* was zero if not found */
+ hash_insert(Labels, label, (void *)count, 0);
+}
+
/*
* add an X-Label: field.
*/
@@ -228,12 +253,20 @@
if (hdr->env->x_label != NULL && new != NULL &&
strcmp(hdr->env->x_label, new) == 0)
return 0;
+
if (hdr->env->x_label != NULL)
+ {
+ label_ref_dec(hdr->env->x_label);
FREE(&hdr->env->x_label);
+ }
+
if (new == NULL)
hdr->env->x_label = NULL;
else
+ {
hdr->env->x_label = safe_strdup(new);
+ label_ref_inc(hdr->env->x_label);
+ }
return hdr->changed = hdr->xlabel_changed = 1;
}
@@ -248,7 +281,7 @@
strncpy(buf, hdr->env->x_label, LONG_STRING);
}
- if (mutt_get_field("Label: ", buf, sizeof(buf), 0 /* | M_CLEAR */) != 0)
+ if (mutt_get_field("Label: ", buf, sizeof(buf), M_LABEL /* | M_CLEAR */) !=
0)
return 0;
new = buf;
@@ -273,3 +306,14 @@
return changed;
}
+
+/* scan a context (mailbox) and hash all labels we find */
+void mutt_scan_labels(CONTEXT *ctx)
+{
+ int i;
+
+ for (i = 0; i < ctx->msgcount; i++)
+ if (ctx->hdrs[i]->env->x_label)
+ label_ref_inc(ctx->hdrs[i]->env->x_label);
+}
+
diff --git a/init.c b/init.c
--- a/init.c
+++ b/init.c
@@ -3235,3 +3235,57 @@
return NULL;
}
+
+int mutt_label_complete (char *buffer, size_t len, int pos, int numtabs)
+{
+ char *pt = buffer;
+ int spaces; /* keep track of the number of leading spaces on the line */
+
+ SKIPWS (buffer);
+ spaces = buffer - pt;
+
+ pt = buffer + pos - spaces;
+ while ((pt > buffer) && !isspace ((unsigned char) *pt))
+ pt--;
+
+ /* first TAB. Collect all the matches */
+ if (numtabs == 1)
+ {
+ struct hash_elem *entry;
+ struct hash_walk_state state;
+
+ Num_matched = 0;
+ strfcpy (User_typed, pt, sizeof (User_typed));
+ memset (Matches, 0, Matches_listsize);
+ memset (Completed, 0, sizeof (Completed));
+ memset (&state, 0, sizeof(state));
+ while ((entry = hash_walk(Labels, &state)))
+ candidate (Completed, User_typed, entry->key, sizeof (Completed));
+ matches_ensure_morespace (Num_matched);
+ qsort(Matches, Num_matched, sizeof(char *), (sort_t *) mutt_strcasecmp);
+ Matches[Num_matched++] = User_typed;
+
+ /* All matches are stored. Longest non-ambiguous string is ""
+ * i.e. dont change 'buffer'. Fake successful return this time */
+ if (User_typed[0] == 0)
+ return 1;
+ }
+
+ if (Completed[0] == 0 && User_typed[0])
+ return 0;
+
+ /* Num_matched will _always_ be atleast 1 since the initial
+ * user-typed string is always stored */
+ if (numtabs == 1 && Num_matched == 2)
+ snprintf(Completed, sizeof(Completed), "%s", Matches[0]);
+ else if (numtabs > 1 && Num_matched > 2)
+ /* cycle thru all the matches */
+ snprintf(Completed, sizeof(Completed), "%s",
+ Matches[(numtabs - 2) % Num_matched]);
+
+ /* return the completed label */
+ strncpy (buffer, Completed, len - spaces);
+
+ return 1;
+}
+
diff --git a/main.c b/main.c
--- a/main.c
+++ b/main.c
@@ -1017,9 +1017,13 @@
if((Context = mx_open_mailbox (folder, ((flags & M_RO) || option
(OPTREADONLY)) ? M_READONLY : 0, NULL))
|| !explicit_folder)
{
+ Labels = hash_create (131, 0);
+ mutt_scan_labels(Context);
mutt_index_menu ();
if (Context)
FREE (&Context);
+ if (Labels)
+ hash_destroy(&Labels, NULL);
}
#ifdef USE_IMAP
imap_logout_all ();
diff --git a/mutt.h b/mutt.h
--- a/mutt.h
+++ b/mutt.h
@@ -90,6 +90,7 @@
#define M_CLEAR (1<<5) /* clear input if printable character is pressed */
#define M_COMMAND (1<<6) /* do command completion */
#define M_PATTERN (1<<7) /* pattern mode - only used for history classes */
+#define M_LABEL (1<<8) /* do label completion */
/* flags for mutt_get_token() */
#define M_TOKEN_EQUAL 1 /* treat '=' as a special */
diff --git a/parse.c b/parse.c
--- a/parse.c
+++ b/parse.c
@@ -1257,20 +1257,6 @@
e->x_label = safe_strdup(p);
matched = 1;
}
-
- default:
- break;
- }
-
- /* Keep track of the user-defined headers */
- if (!matched && user_hdrs)
- {
- /* restore the original line */
- line[strlen (line)] = ':';
-
- if (weed && option (OPTWEED) && mutt_matches_ignore (line, Ignore)
- && !mutt_matches_ignore (line, UnIgnore))
- goto done;
if (last)
{
diff --git a/protos.h b/protos.h
--- a/protos.h
+++ b/protos.h
@@ -184,6 +184,8 @@
void mutt_edit_headers (const char *, const char *, HEADER *, char *, size_t);
int mutt_filter_unprintable (char **);
int mutt_label_message (HEADER *);
+void mutt_scan_labels (CONTEXT *);
+int mutt_label_complete (char *, size_t, int, int);
void mutt_curses_error (const char *, ...);
void mutt_curses_message (const char *, ...);
void mutt_encode_path (char *, size_t, const char *);