Missed these ...

svn path=/trunk/; revision=2763

1 files changed, 464 insertions, 0 deletions

diff --git a/camel/camel-folder-search.c b/camel/camel-folder-search.c
new file mode 100644
index 0000000000..aa3da63f3a
--- /dev/null
+++ b/camel/camel-folder-search.c
@@ -0,0 +1,464 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ *  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, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ *  USA
+ */
+
+/* This is a helper class for folders to implement the search function.
+   It implements enough to do basic searches on folders that can provide
+   an in-memory summary and a body index. */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "camel-folder-search.h"
+
+#define d(x)
+#define r(x)
+
+struct _CamelFolderSearchPrivate {
+};
+
+#define _PRIVATE(o) (((CamelFolderSearch *)(o))->priv)
+
+static ESExpResult *search_header_contains(struct _ESExp *f, int argc, struct _ESExpResult **argv, CamelFolderSearch *search);
+static ESExpResult *search_match_all(struct _ESExp *f, int argc, struct _ESExpTerm **argv, CamelFolderSearch *search);
+static ESExpResult *search_body_contains(struct _ESExp *f, int argc, struct _ESExpResult **argv, CamelFolderSearch *search);
+
+static ESExpResult *search_dummy(struct _ESExp *f, int argc, struct _ESExpResult **argv, CamelFolderSearch *search);
+
+static void camel_folder_search_class_init (CamelFolderSearchClass *klass);
+static void camel_folder_search_init       (CamelFolderSearch *obj);
+static void camel_folder_search_finalise   (GtkObject *obj);
+
+static GtkObjectClass *camel_folder_search_parent;
+
+enum SIGNALS {
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+guint
+camel_folder_search_get_type (void)
+{
+	static guint type = 0;
+	
+	if (!type) {
+		GtkTypeInfo type_info = {
+			"CamelFolderSearch",
+			sizeof (CamelFolderSearch),
+			sizeof (CamelFolderSearchClass),
+			(GtkClassInitFunc) camel_folder_search_class_init,
+			(GtkObjectInitFunc) camel_folder_search_init,
+			(GtkArgSetFunc) NULL,
+			(GtkArgGetFunc) NULL
+		};
+		
+		type = gtk_type_unique (gtk_object_get_type (), &type_info);
+	}
+	
+	return type;
+}
+
+static void
+camel_folder_search_class_init (CamelFolderSearchClass *klass)
+{
+	GtkObjectClass *object_class = (GtkObjectClass *) klass;
+	
+	camel_folder_search_parent = gtk_type_class (gtk_object_get_type ());
+
+	object_class->finalize = camel_folder_search_finalise;
+
+	klass->match_all = search_match_all;
+	klass->body_contains = search_body_contains;
+	klass->header_contains = search_header_contains;
+
+	gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
+}
+
+static void
+camel_folder_search_init (CamelFolderSearch *obj)
+{
+	struct _CamelFolderSearchPrivate *p;
+
+	p = _PRIVATE(obj) = g_malloc0(sizeof(*p));
+
+	obj->sexp = e_sexp_new();
+}
+
+static void
+camel_folder_search_finalise (GtkObject *obj)
+{
+	CamelFolderSearch *search = (CamelFolderSearch *)obj;
+	if (search->sexp)
+		gtk_object_unref((GtkObject *)search->sexp);
+
+	g_free(search->last_search);
+
+	((GtkObjectClass *)(camel_folder_search_parent))->finalize((GtkObject *)obj);
+}
+
+struct {
+	char *name;
+	int offset;
+	int flags;		/* 0x02 = immediate, 0x01 = always enter */
+} builtins[] = {
+	/* these have default implementations in e-sexp */
+	{ "and", GTK_STRUCT_OFFSET(CamelFolderSearchClass, and), 2 },
+	{ "or", GTK_STRUCT_OFFSET(CamelFolderSearchClass, or), 2 },
+	{ "not", GTK_STRUCT_OFFSET(CamelFolderSearchClass, not), 2 },
+	{ "<", GTK_STRUCT_OFFSET(CamelFolderSearchClass, lt), 2 },
+	{ ">", GTK_STRUCT_OFFSET(CamelFolderSearchClass, gt), 2 },
+	{ "=", GTK_STRUCT_OFFSET(CamelFolderSearchClass, eq), 2 },
+
+	/* these we have to use our own default if there is none */
+	/* they should all be defined in the language? so it poarses, or should they not?? */
+	{ "match-all", GTK_STRUCT_OFFSET(CamelFolderSearchClass, match_all), 3 },
+	{ "body-contains", GTK_STRUCT_OFFSET(CamelFolderSearchClass, body_contains), 1 },
+	{ "header-contains", GTK_STRUCT_OFFSET(CamelFolderSearchClass, header_contains), 1 },
+};
+
+void
+camel_folder_search_construct (CamelFolderSearch *search)
+{
+	int i;
+	CamelFolderSearchClass *klass = (CamelFolderSearchClass *)GTK_OBJECT(search)->klass;
+
+	for (i=0;i<sizeof(builtins)/sizeof(builtins[0]);i++) {
+		void *func;
+		/* c is sure messy sometimes */
+		func = *((void **)(((char *)klass)+builtins[i].offset));
+		if (func == NULL && builtins[i].flags&1) {
+			g_warning("Search class doesn't implement '%s' method: %s", builtins[i].name, gtk_type_name(GTK_OBJECT(search)->klass->type));
+			func = (void *)search_dummy;
+		}
+		if (func != NULL) {
+			if (builtins[i].flags&2) {
+				e_sexp_add_ifunction(search->sexp, 0, builtins[i].name, (ESExpIFunc *)func, search);
+			} else {
+				e_sexp_add_function(search->sexp, 0, builtins[i].name, (ESExpFunc *)func, search);
+			}
+		}
+	}
+}
+
+/**
+ * camel_folder_search_new:
+ *
+ * Create a new CamelFolderSearch object.
+ * 
+ * A CamelFolderSearch is a subclassable, extensible s-exp
+ * evaluator which enforces a particular set of s-expressions.
+ * Particular methods may be overriden by an implementation to
+ * implement a search for any sort of backend.
+ *
+ * Return value: A new CamelFolderSearch widget.
+ **/
+CamelFolderSearch *
+camel_folder_search_new (void)
+{
+	CamelFolderSearch *new = CAMEL_FOLDER_SEARCH ( gtk_type_new (camel_folder_search_get_type ()));
+
+	camel_folder_search_construct(new);
+	return new;
+}
+
+/**
+ * camel_folder_search_set_folder:
+ * @search:
+ * @folder: A folder.
+ * 
+ * Set the folder attribute of the search.  This is currently unused, but
+ * could be used to perform a slow-search when indexes and so forth are not
+ * available.  Or for use by subclasses.
+ **/
+void
+camel_folder_search_set_folder(CamelFolderSearch *search, CamelFolder *folder)
+{
+	search->folder = folder;
+}
+
+/**
+ * camel_folder_search_set_summary:
+ * @search: 
+ * @summary: An array of CamelMessageInfo pointers.
+ * 
+ * Set the array of summary objects representing the span of the search.
+ *
+ * If this is not set, then a subclass must provide the functions
+ * for searching headers and for the match-all operator.
+ **/
+void
+camel_folder_search_set_summary(CamelFolderSearch *search, GPtrArray *summary)
+{
+	search->summary = summary;
+}
+
+/**
+ * camel_folder_search_set_body_index:
+ * @search: 
+ * @index: 
+ * 
+ * Set the index (ibex) representing the contents of all messages
+ * in this folder.  If this is not set, then the folder implementation
+ * should sub-class the CamelFolderSearch and provide its own
+ * body-contains function.
+ **/
+void
+camel_folder_search_set_body_index(CamelFolderSearch *search, ibex *index)
+{
+	search->body_index = index;
+}
+
+/**
+ * camel_folder_search_execute_expression:
+ * @search: 
+ * @expr: 
+ * @ex: 
+ * 
+ * Execute the search expression @expr, returning a list of
+ * all matches as a GList of uid's of matching messages.
+ *
+ * Note that any settings such as set_body_index(), set_folder(),
+ * and so on are reset to #NULL once the search has completed.
+ *
+ * TODO: The interface should probably return a GPtrArray
+ * of summary items instead (since they are much more useful
+ * to any client).
+ * 
+ * Return value: A GList of strings of all matching messages.  Once
+ * finished with this, the array AND CONTENTS should be free'd
+ * by the caller.
+ **/
+GList *
+camel_folder_search_execute_expression(CamelFolderSearch *search, const char *expr, CamelException *ex)
+{
+	ESExpResult *r;
+	GList *matches = NULL;
+	int i;
+
+	/* only re-parse if the search has changed */
+	if (search->last_search == NULL
+	    || strcmp(search->last_search, expr)) {
+		e_sexp_input_text(search->sexp, expr, strlen(expr));
+		e_sexp_parse(search->sexp);
+		g_free(search->last_search);
+		search->last_search = g_strdup(expr);
+	}
+	r = e_sexp_eval(search->sexp);
+
+	/* now create a folder summary to return?? */
+	if (r
+	    && r->type == ESEXP_RES_ARRAY_PTR) {
+		d(printf("got result ...\n"));
+		for (i=0;i<r->value.ptrarray->len;i++) {
+			d(printf("adding match: %s\n", (char *)g_ptr_array_index(r->value.ptrarray, i)));
+			matches = g_list_prepend(matches, g_strdup(g_ptr_array_index(r->value.ptrarray, i)));
+		}
+		e_sexp_result_free(r);
+	} else {
+		printf("no result!\n");
+	}
+
+	search->folder = NULL;
+	search->summary = NULL;
+	search->current = NULL;
+	search->body_index = NULL;
+
+	return matches;
+}
+
+/* dummy function, returns false always, or an empty match array */
+static ESExpResult *
+search_dummy(struct _ESExp *f, int argc, struct _ESExpResult **argv, CamelFolderSearch *search)
+{
+	ESExpResult *r;
+
+	if (search->current == NULL) {
+		r = e_sexp_result_new(ESEXP_RES_BOOL);
+		r->value.bool = FALSE;
+	} else {
+		r = e_sexp_result_new(ESEXP_RES_ARRAY_PTR);
+		r->value.ptrarray = g_ptr_array_new();
+	}
+
+	return r;
+}
+
+static ESExpResult *
+search_match_all(struct _ESExp *f, int argc, struct _ESExpTerm **argv, CamelFolderSearch *search)
+{
+	int i;
+	ESExpResult *r, *r1;
+
+	if (argc>1) {
+		g_warning("match-all only takes a single argument, other arguments ignored");
+	}
+	r = e_sexp_result_new(ESEXP_RES_ARRAY_PTR);
+	r->value.ptrarray = g_ptr_array_new();
+
+	if (search->summary == NULL) {
+		/* TODO: make it work - e.g. use the folder and so forth for a slower search */
+		g_warning("No summary supplied, match-all doesn't work with no summary");
+		return r;
+	}
+
+	/* TODO: Could make this a bit faster in the uncommon case (of match-everything) */
+	for (i=0;i<search->summary->len;i++) {
+		search->current = g_ptr_array_index(search->summary, i);
+		if (argc>0) {
+			r1 = e_sexp_term_eval(f, argv[0]);
+			if (r1->type == ESEXP_RES_BOOL) {
+				if (r1->value.bool)
+					g_ptr_array_add(r->value.ptrarray, search->current->uid);
+			} else {
+				g_warning("invalid syntax, matches require a single bool result");
+			}
+			e_sexp_result_free(r1);
+		} else {
+			g_ptr_array_add(r->value.ptrarray, search->current->uid);
+		}
+	}
+	search->current = NULL;
+
+	return r;
+}
+
+static ESExpResult *
+search_header_contains(struct _ESExp *f, int argc, struct _ESExpResult **argv, CamelFolderSearch *search)
+{
+	ESExpResult *r;
+	int truth = FALSE;
+
+	r(printf("executing header-contains\n"));
+
+	/* are we inside a match-all? */
+	if (search->current && argc>1
+	    && argv[0]->type == ESEXP_RES_STRING) {
+		char *headername, *header = NULL;
+		char strbuf[32];
+		int i;
+
+		/* only a subset of headers are supported .. */
+		headername = argv[0]->value.string;
+		if (!strcasecmp(headername, "subject")) {
+			header = search->current->subject;
+		} else if (!strcasecmp(headername, "date")) {
+			/* FIXME: not a very useful form of the date */
+			sprintf(strbuf, "%d", (int)search->current->date_sent);
+			header = strbuf;
+		} else if (!strcasecmp(headername, "from")) {
+			header = search->current->from;
+		} else if (!strcasecmp(headername, "to")) {
+			header = search->current->from;
+		} else {
+			g_warning("Performing query on unknown header: %s", headername);
+		}
+
+		if (header) {
+			/* performs an OR of all words */
+			for (i=1;i<argc && !truth;i++) {
+				if (argv[i]->type == ESEXP_RES_STRING
+				    && strstr(header, argv[i]->value.string)) {
+					r(printf("%s got a match with %s of %s\n", search->current->uid, header, argv[i]->value.string));
+					truth = TRUE;
+					break;
+				}
+			}
+		}
+	}
+	/* TODO: else, find all matches */
+
+	r = e_sexp_result_new(ESEXP_RES_BOOL);
+	r->value.bool = truth;
+
+	return r;
+}
+
+/* this is just to OR results together */
+struct _glib_sux_donkeys {
+	int count;
+	GPtrArray *uids;
+};
+
+/* or, store all unique values */
+static void
+g_lib_sux_htor(char *key, int value, struct _glib_sux_donkeys *fuckup)
+{
+	g_ptr_array_add(fuckup->uids, key);
+}
+
+static ESExpResult *
+search_body_contains(struct _ESExp *f, int argc, struct _ESExpResult **argv, CamelFolderSearch *search)
+{
+	ESExpResult *r;
+	int i, j;
+
+	if (search->current) {
+		int truth = FALSE;
+
+		r = e_sexp_result_new(ESEXP_RES_BOOL);
+		if (search->body_index) {
+			for (i=0;i<argc && !truth;i++) {
+				if (argv[i]->type == ESEXP_RES_STRING) {
+					truth = ibex_find_name(search->body_index, search->current->uid, argv[i]->value.string);
+				} else {
+					g_warning("Invalid type passed to body-contains match function");
+				}
+			}
+		} else {
+			g_warning("Cannot perform indexed body query with no index");
+		}
+		r->value.bool = truth;
+	} else {
+		r = e_sexp_result_new(ESEXP_RES_ARRAY_PTR);
+
+		if (search->body_index) {
+			if (argc==1) {
+				/* common case */
+				r->value.ptrarray = ibex_find(search->body_index, argv[0]->value.string);
+			} else {
+				GHashTable *ht = g_hash_table_new(g_str_hash, g_str_equal);
+				GPtrArray *pa;
+				struct _glib_sux_donkeys lambdafoo;
+
+				/* this sux, perform an or operation on the result(s) of each word */
+				for (i=0;i<argc;i++) {
+					if (argv[i]->type == ESEXP_RES_STRING) {
+						pa = ibex_find(search->body_index, argv[i]->value.string);
+						for (j=0;j<pa->len;j++) {
+							g_hash_table_insert(ht, g_ptr_array_index(pa, j), (void *)1);
+						}
+						g_ptr_array_free(pa, FALSE);
+					} else {
+						g_warning("invalid type passed to body-contains");
+					}
+				}
+				lambdafoo.uids = g_ptr_array_new();
+				g_hash_table_foreach(ht, (GHFunc)g_lib_sux_htor, &lambdafoo);
+				r->value.ptrarray = lambdafoo.uids;
+				g_hash_table_destroy(ht);
+			}
+		} else {
+			r->value.ptrarray = g_ptr_array_new();
+		}
+	}
+
+	return r;
+}