Ichthyostega
4a53ef4cd0
makes the test logs way more readable Believe me: no one will ever notice a "TODO" entry in the logs, when it showed up for more than some months. Thus I've created some new tickets, mostly tagged as "QA" and placed the ticket number at the corresponding locations in the source
387 lines
9.2 KiB
C
387 lines
9.2 KiB
C
/*
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configitem.c - generalized hierachy of configuration items
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Copyright (C) Lumiera.org
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2008, Christian Thaeter <ct@pipapo.org>
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Simeon Voelkel <simeon_voelkel@arcor.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file configitem.c
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** create a configitem out of a single line.
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**
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*/
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#include "include/logging.h"
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#include "lib/llist.h"
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#include "lib/safeclib.h"
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#include "lib/tmpbuf.h"
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//TODO: Lumiera header includes//
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#include "common/config.h"
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#include "common/configitem.h"
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#include "common/configentry.h"
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static LumieraConfigitem parse_directive (LumieraConfigitem self, char* itr);
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static LumieraConfigitem parse_section (LumieraConfigitem self, char* itr);
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static LumieraConfigitem parse_configentry (LumieraConfigitem self, char* itr);
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#include <ctype.h>
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#include <stdint.h>
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LumieraConfigitem
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lumiera_configitem_init (LumieraConfigitem self)
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{
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TRACE (configitem_dbg);
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REQUIRE (self);
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llist_init (&self->link);
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self->parent = NULL;
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llist_init (&self->childs);
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llist_init (&self->lookup);
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self->line = NULL;
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self->key = NULL;
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self->key_size = 0;
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self->delim = NULL;
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self->vtable = NULL;
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return self;
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}
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LumieraConfigitem
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lumiera_configitem_destroy (LumieraConfigitem self, LumieraConfigLookup lookup)
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{
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TRACE (configitem_dbg);
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if (self)
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{
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LLIST_WHILE_HEAD (&self->childs, node)
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lumiera_configitem_delete ((LumieraConfigitem) node, lookup);
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ENSURE (llist_is_empty (&self->childs), "destructor didn't remove childs");
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if (self->vtable && self->vtable->destroy)
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self->vtable->destroy (self);
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if (!llist_is_empty (&self->lookup))
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lumiera_config_lookup_remove (lookup, self);
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llist_unlink (&self->link);
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lumiera_free (self->line);
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}
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return self;
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}
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LumieraConfigitem
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lumiera_configitem_new (const char* line)
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{
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TRACE (configitem_dbg, "%s", line);
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lumiera_configitem tmp;
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lumiera_configitem_init (&tmp);
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lumiera_configitem_parse (&tmp, line);
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LumieraConfigitem self = tmp.vtable && tmp.vtable->newitem
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? tmp.vtable->newitem (&tmp)
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: lumiera_configitem_move (lumiera_malloc (sizeof (*self)), &tmp);
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return self;
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}
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void
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lumiera_configitem_delete (LumieraConfigitem self, LumieraConfigLookup lookup)
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{
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TRACE (configitem_dbg);
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lumiera_free (lumiera_configitem_destroy (self, lookup));
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}
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LumieraConfigitem
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lumiera_configitem_set_value (LumieraConfigitem self, const char* delim_value)
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{
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REQUIRE (self->key);
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REQUIRE (self->delim);
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char* line = lumiera_tmpbuf_snprintf (SIZE_MAX, "%.*s%s", self->delim - self->line, self->line, delim_value);
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lumiera_configitem_parse (self, line);
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return self;
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}
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LumieraConfigitem
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lumiera_configitem_move (LumieraConfigitem self, LumieraConfigitem source)
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{
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TRACE (configitem_dbg);
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REQUIRE (self);
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REQUIRE (source);
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llist_init (&self->link);
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llist_insertlist_next (&self->link, &source->link);
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self->parent = source->parent;
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llist_init (&self->childs);
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llist_insertlist_next (&self->childs, &source->childs);
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llist_init (&self->lookup);
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llist_insertlist_next (&self->lookup, &source->lookup);
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self->line = source->line;
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source->line = NULL;
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self->key = source->key;
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self->key_size = source->key_size;
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self->delim = source->delim;
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self->vtable = source->vtable;
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return self;
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}
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LumieraConfigitem
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lumiera_configitem_parse (LumieraConfigitem self, const char* line)
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{
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TRACE (configitem_dbg);
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lumiera_free (self->line);
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self->line = lumiera_strndup (line, SIZE_MAX);
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/////////////////////////TODO do a real startup here
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char* itr = self->line;
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/* skip leading whitespace */
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while (*itr && isspace (*itr))
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itr++;
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/* decide what this line represents */
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if (!*itr || *itr == '#' )
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{
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/* this is an empty line or a a comment */
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}
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else if (*itr == '@' )
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{
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/* this is a directive */
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self = parse_directive (self, itr);
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}
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else if (*itr == '[' )
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{
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/* this is a section */
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self = parse_section (self, itr);
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}
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else
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{
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/* this is probably a configentry */
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self = parse_configentry (self, itr);
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}
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return self;
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}
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static LumieraConfigitem
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parse_directive (LumieraConfigitem self, char* itr)
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{
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/* itr points now to @ */
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self->key = itr;
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/* check whether there are illegal whitespace after @ */
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itr++;
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if (*itr && !isspace(*itr))
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{
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/* now look for the end of the directive and set the keysize */
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self->key_size = strspn (itr, LUMIERA_CONFIG_KEY_CHARS);
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itr += self->key_size;
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/* we need a key with a length greater than zero and */
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/* either end of line or whitespace after key */
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if ( self->key_size && ( !*itr || (*itr && isspace(*itr)) ))
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{
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/* look for given arguments */
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/* skip blanks */
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while (*itr && isspace (*itr))
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itr++;
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if (*itr)
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{
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/* there are arguments given, thus set delim */
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self->delim = itr - 1;
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}
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else
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{
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/* no arguments were given */
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self->delim = NULL;
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}
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}
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else
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{
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/* malformed lines shall be treated like if they were comments */
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self->key = NULL;
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self->key_size = 0;
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LUMIERA_ERROR_SET (config, CONFIG_SYNTAX, self->line);
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}
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}
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else
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{
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/* there occurred already an error right after the @! */
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/* malformed lines shall be treated like if they were comments */
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self->key = NULL;
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self->key_size = 0;
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LUMIERA_ERROR_SET (config, CONFIG_SYNTAX, self->line);
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}
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return self;
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}
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static LumieraConfigitem
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parse_section (LumieraConfigitem self, char* itr)
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{
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/* skip blanks before prefix */
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itr++;
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while (*itr && isspace(*itr))
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itr++;
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/* itr points now to the begin of the key */
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self->key = itr;
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/* now look for the end of the key and set the keysize */
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self->key_size = strspn (itr, LUMIERA_CONFIG_KEY_CHARS);
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itr += self->key_size;
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/* if the line ends ends with prefix] delim points to ] */
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/* and not the last (blank) character before the final square bracket */
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if (self->key_size && *itr && *itr == ']')
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{
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self->delim = itr;
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TODO("self->vtable = &lumiera_configsection_funcs;");
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}
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else if (self->key_size && *itr && isspace(*itr))
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{
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/* skip blanks until we reach the suffix or the final square bracket */
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while (*itr && isspace(*itr))
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itr++;
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if (*itr && *itr == ']')
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{
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/* final square bracket reached, so place delim one char before the */
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/* actual position which must be a whitespace: no extra check necessary */
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self->delim = itr - 1;
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TODO("self->vtable = &lumiera_configsection_funcs;");
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}
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else if (*itr)
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{
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TODO("check wheter suffix is made of legal characters");
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/* delim points to the last whitespace before the actual position; */
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/* no extra check needed */
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self->delim = itr - 1;
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TODO("self->vtable = &lumiera_configsection_funcs;");
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}
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else
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{
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/* malformed section line, treat this line like a comment */
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self->key = NULL;
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self->key_size = 0;
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LUMIERA_ERROR_SET (config, CONFIG_SYNTAX, self->line);
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}
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}
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else
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{
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/* error: either *itr is false, points neither to a blank nor to a closed square */
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/* bracket or the key_size is zero */
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/* treat this line like a comment */
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self->key = NULL;
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self->key_size = 0;
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LUMIERA_ERROR_SET (config, CONFIG_SYNTAX, self->line);
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}
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return self;
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}
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static LumieraConfigitem
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parse_configentry (LumieraConfigitem self, char* itr)
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{
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/* itr points now to the first not-whitespace-character */
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self->key = itr;
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/* now look for the end of the key and set the keysize */
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self->key_size = strspn (itr, LUMIERA_CONFIG_KEY_CHARS);
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/* skip blanks */
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itr += self->key_size;
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while (*itr && isspace (*itr))
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itr++;
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if (self->key_size && *itr == '=')
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{
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/* this configentry assigns a value to a key */
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self->delim = itr;
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self->vtable = &lumiera_configentry_funcs;
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}
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else if (self->key_size && *itr == '<')
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{
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/* this configentry is a redirect */
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self->delim = itr;
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self->vtable = &lumiera_configentry_funcs;
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}
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else
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{
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/* this is not a valid configentry; treat this line like a comment */
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self->key = NULL;
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self->key_size = 0;
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LUMIERA_ERROR_SET (config, CONFIG_SYNTAX, self->line);
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}
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return self;
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}
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/*
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// Local Variables:
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// mode: C
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// c-file-style: "gnu"
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// indent-tabs-mode: nil
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// End:
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*/
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