Remove the CONF_DEFAULT_PATH entry, as this is handled by the url config

2002-06-04  Not Zed  <NotZed@Ximian.com>

        * providers/local/camel-local-provider.c: Remove the
        CONF_DEFAULT_PATH entry, as this is handled by the url config
        stuff.  This made it basically impossible to configure any local
        folder from the gui.

        * providers/local/camel-local-folder.c (local_refresh_info): Force
        a refresh.  Should work for all local folders to force them to
        refresh.

        * providers/local/camel-maildir-folder.c (maildir_refresh_info):
        Removed, moved into camel-local-folder.

        * providers/local/camel-mh-summary.c (mh_summary_next_uid_string):
        Once we assign or get a uid, tell the summary of this, so the next
        uid we get will be higher than any previously.

        * camel-object.c (camel_object_ref, camel_object_unref): I got
        sick of casting, these now take void * like they should, and
        perform their own run-time type checking.

        * providers/local/camel-mh-store.c (recursive_scan): Changed to
        use stat, not lstat (*shrug* maybe someone wants to softlink their
        maildir tree?).
        (inode_hash):
        (inode_equal):
        (inode_free): Copied from camel-maildir store (should put into
        camel-local-store or utils?).
        (recursive_scan): Changed to check for re-visiting inodes.  Also,
        it builds the tree itself, rather than using folder_info_build.
        (add_folder): Changed to folder_info_new.
        (recursive_scan): Properly honour the recursive flag.  Also,
        lookup unread count from folder.
        (folder_info_new): Init unread message count to -1, since we dont
        know yet.
        (folder_info_new): Take the name as an argument, and perform the
        merging here.
        (folders_update): Util func to add/remove folders from .folders
        file.  I'm assuming its sorted.
        (get_folder): Add the folder to .folders if we created a new one,
        and if it exists.
        (delete_folder): Remove from .folders, etc.
        (folders_scan): If we have a .folders file, read and use that
        instead.
        (recursive_scan): Handle scanning from a particular directory
        properly.
        (rename_folder): Implement so we can track any changes to the
        .folders file if its turned on.

        ** Applied patch below from Greg Hudson.

2002-05-10  Greg Hudson  <ghudson@mit.edu>

        * camel-mh-store.c (get_inbox, get_folder_info, recursive_scan,
        add_folder): Implement support for MH stores.

        * camel-mh-summary.c (mh_summary_check, sort_uid_cmp): Sort MH
        messages by message number (uid), like we sort maildir messages by
        date.

        * camel-local-provider.c (mh_provider): Turn on source and store
        flags.

svn path=/trunk/; revision=17130

1 files changed, 400 insertions, 1 deletions

diff --git a/camel/providers/local/camel-mh-store.c b/camel/providers/local/camel-mh-store.c
index 8b8c2e5f0e..f653fdb408 100644
--- a/camel/providers/local/camel-mh-store.c
+++ b/camel/providers/local/camel-mh-store.c
@@ -27,32 +27,48 @@
 #include <errno.h>
 #include <string.h>
 #include <unistd.h>
+#include <dirent.h>
 
 #include "camel-mh-store.h"
 #include "camel-mh-folder.h"
 #include "camel-exception.h"
 #include "camel-url.h"
+#include "camel-private.h"
+
+#include <camel/camel-stream-fs.h>
+#include <camel/camel-stream-buffer.h>
 
 static CamelLocalStoreClass *parent_class = NULL;
 
+#define d(x)
+
 /* Returns the class for a CamelMhStore */
 #define CMHS_CLASS(so) CAMEL_MH_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
 #define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
 #define CMHF_CLASS(so) CAMEL_MH_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
 
+static void construct (CamelService *service, CamelSession *session, CamelProvider *provider, CamelURL *url, CamelException *ex);
 static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guint32 flags, CamelException * ex);
+static CamelFolder *get_inbox (CamelStore *store, CamelException *ex);
 static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex);
+static void rename_folder(CamelStore *store, const char *old, const char *new, CamelException *ex);
+static CamelFolderInfo * get_folder_info (CamelStore *store, const char *top, guint32 flags, CamelException *ex);
 
 static void camel_mh_store_class_init(CamelObjectClass * camel_mh_store_class)
 {
 	CamelStoreClass *camel_store_class = CAMEL_STORE_CLASS(camel_mh_store_class);
-	/*CamelServiceClass *camel_service_class = CAMEL_SERVICE_CLASS(camel_mh_store_class);*/
+	CamelServiceClass *camel_service_class = CAMEL_SERVICE_CLASS(camel_mh_store_class);
 
 	parent_class = (CamelLocalStoreClass *)camel_type_get_global_classfuncs(camel_local_store_get_type());
 
 	/* virtual method overload, use defaults for most */
+	camel_service_class->construct = construct;
+
 	camel_store_class->get_folder = get_folder;
+	camel_store_class->get_inbox = get_inbox;
 	camel_store_class->delete_folder = delete_folder;
+	camel_store_class->rename_folder = rename_folder;
+	camel_store_class->get_folder_info = get_folder_info;
 }
 
 CamelType camel_mh_store_get_type(void)
@@ -72,6 +88,103 @@ CamelType camel_mh_store_get_type(void)
 	return camel_mh_store_type;
 }
 
+static void
+construct (CamelService *service, CamelSession *session, CamelProvider *provider, CamelURL *url, CamelException *ex)
+{
+	CamelMhStore *mh_store = (CamelMhStore *)service;
+
+	CAMEL_SERVICE_CLASS (parent_class)->construct (service, session, provider, url, ex);
+	if (camel_exception_is_set (ex))
+		return;
+
+	if (camel_url_get_param(url, "dotfolders"))
+		mh_store->flags |= CAMEL_MH_DOTFOLDERS;
+}
+
+enum {
+	UPDATE_NONE,
+	UPDATE_ADD,
+	UPDATE_REMOVE,
+};
+
+/* update the .folders file if it exists, or create it if it doesn't */
+static void
+folders_update(const char *root, const char *folder, int mode)
+{
+	char *tmp, *tmpnew, *line = NULL;
+	CamelStream *stream, *in = NULL, *out = NULL;
+
+	tmpnew = alloca(strlen(root)+16);
+	sprintf(tmpnew, "%s.folders~", root);
+	
+	out = camel_stream_fs_new_with_name(tmpnew, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+	if (out == NULL)
+		goto fail;
+
+	tmp = alloca(strlen(root)+16);
+	sprintf(tmp, "%s.folders", root);
+	stream = camel_stream_fs_new_with_name(tmp, O_RDONLY, 0);
+	if (stream) {
+		in = camel_stream_buffer_new(stream, CAMEL_STREAM_BUFFER_READ);
+		camel_object_unref(stream);
+	}
+	if (in == NULL || stream == NULL) {
+		if (mode == UPDATE_ADD && camel_stream_printf(out, "%s\n", folder) == -1)
+			goto fail;
+		goto done;
+	}
+
+	while ((line = camel_stream_buffer_read_line((CamelStreamBuffer *)in))) {
+		int copy = TRUE;
+
+		switch (mode) {
+		case UPDATE_REMOVE:
+			if (strcmp(line, folder) == 0)
+				copy = FALSE;
+			break;
+		case UPDATE_ADD: {
+			int cmp = strcmp(line, folder);
+
+			if (cmp > 0) {
+				/* found insertion point */
+				if (camel_stream_printf(out, "%s\n", folder) == -1)
+					goto fail;
+				mode = UPDATE_NONE;
+			} else if (tmp == 0) {
+				/* already there */
+				mode = UPDATE_NONE;
+			}
+			break; }
+		case UPDATE_NONE:
+			break;
+		}
+
+		if (copy && camel_stream_printf(out, "%s\n", line) == -1)
+			goto fail;
+
+		g_free(line);
+		line = NULL;
+	}
+
+	/* add to end? */
+	if (mode == UPDATE_ADD && camel_stream_printf(out, "%s\n", folder) == -1)
+		goto fail;
+
+	if (camel_stream_close(out) == -1)
+		goto fail;
+
+done:
+	/* should we care if this fails?  I suppose so ... */
+	rename(tmpnew, tmp);
+fail:
+	unlink(tmpnew);		/* remove it if its there */
+	g_free(line);
+	if (in)
+		camel_object_unref(in);
+	if (out)
+		camel_object_unref(out);
+}
+
 static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guint32 flags, CamelException * ex)
 {
 	char *name;
@@ -97,6 +210,7 @@ static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guin
 			g_free (name);
 			return NULL;
 		}
+
 		if (mkdir(name, 0700) != 0) {
 			camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
 					     _("Could not create folder `%s':\n%s"),
@@ -104,6 +218,12 @@ static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guin
 			g_free (name);
 			return NULL;
 		}
+
+		/* add to .folders if we are supposed to */
+		/* FIXME: throw exception on error */
+		if (((CamelMhStore *)store)->flags & CAMEL_MH_DOTFOLDERS)
+			folders_update(((CamelLocalStore *)store)->toplevel_dir, folder_name, UPDATE_ADD);
+
 	} else if (!S_ISDIR(st.st_mode)) {
 		camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
 				     _("`%s' is not a directory."), name);
@@ -115,6 +235,12 @@ static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guin
 	return camel_mh_folder_new(store, folder_name, flags, ex);
 }
 
+static CamelFolder *
+get_inbox (CamelStore *store, CamelException *ex)
+{
+	return get_folder (store, "inbox", 0, ex);
+}
+
 static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex)
 {
 	char *name;
@@ -130,6 +256,279 @@ static void delete_folder(CamelStore * store, const char *folder_name, CamelExce
 	}
 	g_free(name);
 
+	/* remove from .folders if we are supposed to */
+	if (((CamelMhStore *)store)->flags & CAMEL_MH_DOTFOLDERS)
+		folders_update(((CamelLocalStore *)store)->toplevel_dir, folder_name, UPDATE_REMOVE);
+
 	/* and remove metadata */
 	((CamelStoreClass *)parent_class)->delete_folder(store, folder_name, ex);
 }
+
+static void
+rename_folder(CamelStore *store, const char *old, const char *new, CamelException *ex)
+{
+	CamelException e;
+
+	camel_exception_init(&e);
+	((CamelStoreClass *)parent_class)->rename_folder(store, old, new, &e);
+	if (camel_exception_is_set(&e)) {
+		camel_exception_xfer(ex, &e);
+		return;
+	}
+	camel_exception_clear(&e);
+
+	if (((CamelMhStore *)store)->flags & CAMEL_MH_DOTFOLDERS) {
+		/* yeah this is messy, but so is mh! */
+		folders_update(((CamelLocalStore *)store)->toplevel_dir, new, UPDATE_ADD);
+		folders_update(((CamelLocalStore *)store)->toplevel_dir, old, UPDATE_REMOVE);
+	}
+}
+
+static CamelFolderInfo *folder_info_new(CamelStore *store, const char *root, const char *path)
+{
+	CamelFolderInfo *fi;
+	char *base;
+	CamelFolder *folder;
+
+	base = strrchr(path, '/');
+
+	/* Build the folder info structure. */
+	fi = g_malloc0(sizeof(*fi));
+	fi->url = g_strdup_printf("mh:%s#%s", root, path);
+	fi->full_name = g_strdup(path);
+	fi->name = g_strdup(base?base+1:path);
+	fi->unread_message_count = 0;
+
+	/* check unread count if open */
+	CAMEL_STORE_LOCK(store, cache_lock);
+	folder = g_hash_table_lookup(store->folders, path);
+	if (folder) {
+		if ((((CamelMhStore *)store)->flags & CAMEL_STORE_FOLDER_INFO_FAST) == 0)
+			camel_folder_refresh_info(folder, NULL);
+		fi->unread_message_count = camel_folder_get_unread_message_count(folder);
+	}
+	CAMEL_STORE_UNLOCK(store, cache_lock);
+
+	/* We could: if we have no folder, and FAST isn't specified, perform a full
+	   scan of all messages for their status flags.  But its probably not worth
+	   it as we need to read the top of every file, i.e. very very slow */
+
+	camel_folder_info_build_path(fi, '/');
+
+	d(printf("New folderinfo:\n '%s'\n '%s'\n '%s'\n", fi->full_name, fi->url, fi->path));
+
+	return fi;
+}
+
+/* used to find out where we've visited already */
+struct _inode {
+	dev_t dnode;
+	ino_t inode;
+};
+
+/* Scan path, under root, for directories to add folders for.  Both
+ * root and path should have a trailing "/" if they aren't empty. */
+static void recursive_scan(CamelStore *store, CamelFolderInfo **fip, CamelFolderInfo *parent, GHashTable *visited, const char *root, const char *path)
+{
+	char *fullpath, *tmp;
+	DIR *dp;
+	struct dirent *d;
+	struct stat st;
+	CamelFolderInfo *fi;
+	struct _inode in, *inew;
+
+	/* Open the specified directory. */
+	if (path[0]) {
+		fullpath = alloca(strlen(root)+strlen(path)+2);
+		sprintf(fullpath, "%s/%s", root, path);
+	} else 
+		fullpath = (char *)root;
+
+	if (stat(fullpath, &st) == -1 || !S_ISDIR(st.st_mode))
+		return;
+
+	in.dnode = st.st_dev;
+	in.inode = st.st_ino;
+
+	/* see if we've visited already */
+	if (g_hash_table_lookup(visited, &in) != NULL)
+		return;
+
+	inew = g_malloc(sizeof(*inew));
+	*inew = in;
+	g_hash_table_insert(visited, inew, inew);
+
+	/* link in ... */
+	fi = folder_info_new(store, root, path);
+	fi->parent = parent;
+	fi->sibling = *fip;
+	*fip = fi;
+
+	if ((( ((CamelMhStore *)store)->flags & CAMEL_STORE_FOLDER_INFO_RECURSIVE) || parent == NULL)) {
+		/* now check content for possible other directories */
+		dp = opendir(fullpath);
+		if (dp == NULL)
+			return;
+
+		/* Look for subdirectories to add and scan. */
+		while ((d = readdir(dp)) != NULL) {
+			/* Skip current and parent directory. */
+			if (strcmp(d->d_name, ".") == 0
+			    || strcmp(d->d_name, "..") == 0)
+				continue;
+
+			/* skip fully-numerical entries (i.e. mh messages) */
+			strtoul(d->d_name, &tmp, 10);
+			if (*tmp == 0)
+				continue;
+
+			/* otherwise, treat at potential node, and recurse, a bit more expensive than needed, but tough! */
+			if (path[0]) {
+				tmp = g_strdup_printf("%s/%s", path, d->d_name);
+				recursive_scan(store, &fi->child, fi, visited, root, tmp);
+				g_free(tmp);
+			} else {
+				recursive_scan(store, &fi->child, fi, visited, root, d->d_name);
+			}
+		}
+
+		closedir(dp);
+	}
+}
+
+/* scan a .folders file */
+static void
+folders_scan(CamelStore *store, const char *root, const char *top, CamelFolderInfo **fip)
+{
+	CamelFolderInfo *fi;
+	char  line[512], *path, *tmp;
+	CamelStream *stream, *in;
+	struct stat st;
+	GPtrArray *folders;
+	GHashTable *visited;
+	int len;
+
+	tmp = alloca(strlen(root)+16);
+	sprintf(tmp, "%s/.folders", root);
+	stream = camel_stream_fs_new_with_name(tmp, 0, O_RDONLY);
+	if (stream == NULL)
+		return;
+
+	in = camel_stream_buffer_new(stream, CAMEL_STREAM_BUFFER_READ);
+	camel_object_unref(stream);
+	if (in == NULL)
+		return;
+
+	visited = g_hash_table_new(g_str_hash, g_str_equal);
+	folders = g_ptr_array_new();
+
+	while ( (len = camel_stream_buffer_gets((CamelStreamBuffer *)in, line, sizeof(line))) > 0) {
+		/* ignore blank lines */
+		if (len <= 1)
+			continue;
+		/* check for invalidly long lines, we abort evreything and fallback */
+		if (line[len-1] != '\n') {
+			int i;
+
+			for (i=0;i<folders->len;i++)
+				camel_folder_info_free(folders->pdata[i]);
+			g_ptr_array_set_size(folders, 0);
+			break;
+		}
+		line[len-1] = 0;
+
+		/* check for \r ? */
+
+		if (top && top[0]) {
+			int toplen = strlen(top);
+
+			/* check is subdir */
+			if (strncmp(top, line, len) != 0)
+				continue;
+		
+			/* check is not sub-subdir if not recursive */
+			if (( ((CamelMhStore *)store)->flags & CAMEL_STORE_FOLDER_INFO_RECURSIVE) == 0
+			    && (tmp = strrchr(line, '/'))
+			    && tmp > line+toplen)
+				continue;
+		}
+
+		if (g_hash_table_lookup(visited, line) != NULL)
+			continue;
+
+		tmp = g_strdup(line);
+		g_hash_table_insert(visited, tmp, tmp);
+
+		path = g_strdup_printf("%s/%s", root, line);
+		if (stat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+			fi = folder_info_new(store, root, line);
+			g_ptr_array_add(folders, fi);
+		}
+		g_free(path);
+	}
+
+	if (folders->len)
+		*fip = camel_folder_info_build(folders, NULL, '/', TRUE);
+	g_ptr_array_free(folders, TRUE);
+
+	g_hash_table_foreach(visited, (GHFunc)g_free, NULL);
+	g_hash_table_destroy(visited);
+
+	camel_object_unref(in);
+}
+
+/* FIXME: move to camel-local, this is shared with maildir code */
+static guint inode_hash(const void *d)
+{
+	const struct _inode *v = d;
+
+	return v->inode ^ v->dnode;
+}
+
+static gboolean inode_equal(const void *a, const void *b)
+{
+	const struct _inode *v1 = a, *v2 = b;
+	
+	return v1->inode == v2->inode && v1->dnode == v2->dnode;
+}
+
+static void inode_free(void *k, void *v, void *d)
+{
+	g_free(k);
+}
+
+static CamelFolderInfo *
+get_folder_info (CamelStore *store, const char *top, guint32 flags, CamelException *ex)
+{
+	CamelFolderInfo *fi = NULL;
+	char *root;
+
+	root = ((CamelService *)store)->url->path;
+	
+	/* use .folders if we are supposed to */
+	if (((CamelMhStore *)store)->flags & CAMEL_MH_DOTFOLDERS) {
+		folders_scan(store, root, top, &fi);
+	} else {
+		GHashTable *visited = g_hash_table_new(inode_hash, inode_equal);
+
+		if (top == NULL)
+			top = "";
+
+		recursive_scan(store, &fi, NULL, visited, root, top);
+
+		/* if we actually scanned from root, we have a "" root node we dont want */
+		if (fi != NULL && top[0] == 0) {
+			CamelFolderInfo *rfi;
+
+			rfi = fi;
+			fi = rfi->child;
+			rfi->child = NULL;
+			camel_folder_info_free(rfi);
+		}
+
+		g_hash_table_foreach(visited, inode_free, NULL);
+		g_hash_table_destroy(visited);
+	}
+
+	return fi;
+}