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-rw-r--r--libical/src/libicalss/icaldirset.c753
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diff --git a/libical/src/libicalss/icaldirset.c b/libical/src/libicalss/icaldirset.c
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-/* -*- Mode: C -*-
- ======================================================================
- FILE: icaldirset.c
- CREATOR: eric 28 November 1999
-
- $Id$
- $Locker$
-
- (C) COPYRIGHT 2000, Eric Busboom, http://www.softwarestudio.org
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of either:
-
- The LGPL as published by the Free Software Foundation, version
- 2.1, available at: http://www.fsf.org/copyleft/lesser.html
-
- Or:
-
- The Mozilla Public License Version 1.0. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
-
- The Original Code is eric. The Initial Developer of the Original
- Code is Eric Busboom
-
-
- ======================================================================*/
-
-
-/*
-
- icaldirset manages a database of ical components and offers
- interfaces for reading, writting and searching for components.
-
- icaldirset groups components in to clusters based on their DTSTAMP
- time -- all components that start in the same month are grouped
- together in a single file. All files in a sotre are kept in a single
- directory.
-
- The primary interfaces are icaldirset_first and icaldirset_next. These
- routine iterate through all of the components in the store, subject
- to the current gauge. A gauge is an icalcomponent that is tested
- against other componets for a match. If a gauge has been set with
- icaldirset_select, icaldirset_first and icaldirset_next will only
- return componentes that match the gauge.
-
- The Store generated UIDs for all objects that are stored if they do
- not already have a UID. The UID is the name of the cluster (month &
- year as MMYYYY) plus a unique serial number. The serial number is
- stored as a property of the cluster.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-
-#include "ical.h"
-#include "icaldirset.h"
-#include "pvl.h"
-#include "icalerror.h"
-#include "icalparser.h"
-#include "icaldirset.h"
-#include "icalfileset.h"
-#include "icalfilesetimpl.h"
-#include "icalgauge.h"
-
-#include <limits.h> /* For PATH_MAX */
-#include <errno.h>
-#include <sys/types.h> /* for opendir() */
-#include <dirent.h> /* for opendir() */
-#include <sys/stat.h> /* for stat */
-#include <unistd.h> /* for stat, getpid */
-#include <time.h> /* for clock() */
-#include <stdlib.h> /* for rand(), srand() */
-#include <sys/utsname.h> /* for uname */
-#include <string.h> /* for strdup */
-#include "icaldirsetimpl.h"
-
-
-struct icaldirset_impl* icaldirset_new_impl()
-{
- struct icaldirset_impl* impl;
-
- if ( ( impl = (struct icaldirset_impl*)
- malloc(sizeof(struct icaldirset_impl))) == 0) {
- icalerror_set_errno(ICAL_NEWFAILED_ERROR);
- return 0;
- }
-
- strcpy(impl->id,ICALDIRSET_ID);
-
- return impl;
-}
-
-const char* icaldirset_path(icaldirset* cluster)
-{
- struct icaldirset_impl *impl = icaldirset_new_impl();
-
- return impl->dir;
-
-}
-
-void icaldirset_mark(icaldirset* store)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
-
- icalfileset_mark(impl->cluster);
-}
-
-
-icalerrorenum icaldirset_commit(icaldirset* store)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
-
- return icalfileset_commit(impl->cluster);
-
-}
-
-void icaldirset_lock(const char* dir)
-{
-}
-
-
-void icaldirset_unlock(const char* dir)
-{
-}
-
-/* Load the contents of the store directory into the store's internal directory list*/
-icalerrorenum icaldirset_read_directory(struct icaldirset_impl* impl)
-{
- struct dirent *de;
- DIR* dp;
- char *str;
-
- dp = opendir(impl->dir);
-
- if ( dp == 0) {
- icalerror_set_errno(ICAL_FILE_ERROR);
- return ICAL_FILE_ERROR;
- }
-
- /* clear contents of directory list */
- while((str = pvl_pop(impl->directory))){
- free(str);
- }
-
- /* load all of the cluster names in the directory list */
- for(de = readdir(dp);
- de != 0;
- de = readdir(dp)){
-
- /* Remove known directory names '.' and '..'*/
- if (strcmp(de->d_name,".") == 0 ||
- strcmp(de->d_name,"..") == 0 ){
- continue;
- }
-
- pvl_push(impl->directory, (void*)strdup(de->d_name));
- }
-
- closedir(dp);
-
- return ICAL_NO_ERROR;
-}
-
-icaldirset* icaldirset_new(const char* dir)
-{
- struct icaldirset_impl *impl = icaldirset_new_impl();
- struct stat sbuf;
-
- if (impl == 0){
- return 0;
- }
-
- icalerror_check_arg_rz( (dir!=0), "dir");
-
- if (stat(dir,&sbuf) != 0){
- icalerror_set_errno(ICAL_FILE_ERROR);
- return 0;
- }
-
- /* dir is not the name of a direectory*/
- if (!S_ISDIR(sbuf.st_mode)){
- icalerror_set_errno(ICAL_USAGE_ERROR);
- return 0;
- }
-
- icaldirset_lock(dir);
-
- impl = icaldirset_new_impl();
-
- if (impl ==0){
- icalerror_set_errno(ICAL_NEWFAILED_ERROR);
- return 0;
- }
-
- impl->directory = pvl_newlist();
- impl->directory_iterator = 0;
- impl->dir = (char*)strdup(dir);
- impl->gauge = 0;
- impl->first_component = 0;
- impl->cluster = 0;
-
- icaldirset_read_directory(impl);
-
- return (icaldirset*) impl;
-}
-
-void icaldirset_free(icaldirset* s)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)s;
- char* str;
-
- icaldirset_unlock(impl->dir);
-
- if(impl->dir !=0){
- free(impl->dir);
- }
-
- if(impl->gauge !=0){
- icalcomponent_free(impl->gauge);
- }
-
- if(impl->cluster !=0){
- icalfileset_free(impl->cluster);
- }
-
- while(impl->directory !=0 && (str=pvl_pop(impl->directory)) != 0){
- free(str);
- }
-
- if(impl->directory != 0){
- pvl_free(impl->directory);
- }
-
- impl->directory = 0;
- impl->directory_iterator = 0;
- impl->dir = 0;
- impl->gauge = 0;
- impl->first_component = 0;
-
- free(impl);
-
-}
-
-/* icaldirset_next_uid_number updates a serial number in the Store
- directory in a file called SEQUENCE */
-
-int icaldirset_next_uid_number(icaldirset* store)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
- char sequence = 0;
- char temp[128];
- char filename[ICAL_PATH_MAX];
- char *r;
- FILE *f;
- struct stat sbuf;
-
- icalerror_check_arg_rz( (store!=0), "store");
-
- sprintf(filename,"%s/%s",impl->dir,"SEQUENCE");
-
- /* Create the file if it does not exist.*/
- if (stat(filename,&sbuf) == -1 || !S_ISREG(sbuf.st_mode)){
-
- f = fopen(filename,"w");
- if (f != 0){
- fprintf(f,"0");
- fclose(f);
- } else {
- icalerror_warn("Can't create SEQUENCE file in icaldirset_next_uid_number");
- return 0;
- }
-
- }
-
- if ( (f = fopen(filename,"r+")) != 0){
-
- rewind(f);
- r = fgets(temp,128,f);
-
- if (r == 0){
- sequence = 1;
- } else {
- sequence = atoi(temp)+1;
- }
-
- rewind(f);
-
- fprintf(f,"%d",sequence);
-
- fclose(f);
-
- return sequence;
-
- } else {
- icalerror_warn("Can't create SEQUENCE file in icaldirset_next_uid_number");
- return 0;
- }
-
-}
-
-icalerrorenum icaldirset_next_cluster(icaldirset* store)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
- char path[ICAL_PATH_MAX];
-
- if (impl->directory_iterator == 0){
- icalerror_set_errno(ICAL_INTERNAL_ERROR);
- return ICAL_INTERNAL_ERROR;
- }
- impl->directory_iterator = pvl_next(impl->directory_iterator);
-
- if (impl->directory_iterator == 0){
- /* There are no more clusters */
- if(impl->cluster != 0){
- icalfileset_free(impl->cluster);
- impl->cluster = 0;
- }
- return ICAL_NO_ERROR;
- }
-
- sprintf(path,"%s/%s",impl->dir,(char*)pvl_data(impl->directory_iterator));
-
- icalfileset_free(impl->cluster);
-
- impl->cluster = icalfileset_new(path);
-
- return icalerrno;
-}
-
-void icaldirset_add_uid(icaldirset* store, icaldirset* comp)
-{
- char uidstring[ICAL_PATH_MAX];
- icalproperty *uid;
- struct utsname unamebuf;
-
- icalerror_check_arg_rv( (store!=0), "store");
- icalerror_check_arg_rv( (comp!=0), "comp");
-
- uid = icalcomponent_get_first_property(comp,ICAL_UID_PROPERTY);
-
- if (uid == 0) {
-
- uname(&unamebuf);
-
- sprintf(uidstring,"%d-%s",(int)getpid(),unamebuf.nodename);
-
- uid = icalproperty_new_uid(uidstring);
- icalcomponent_add_property(comp,uid);
- } else {
-
- strcpy(uidstring,icalproperty_get_uid(uid));
- }
-}
-
-
-/* This assumes that the top level component is a VCALENDAR, and there
- is an inner component of type VEVENT, VTODO or VJOURNAL. The inner
- component must have a DTAMP property */
-
-icalerrorenum icaldirset_add_component(icaldirset* store, icaldirset* comp)
-{
- struct icaldirset_impl *impl;
- char clustername[ICAL_PATH_MAX];
- icalproperty *dt;
- icalvalue *v;
- struct icaltimetype tm;
- icalerrorenum error = ICAL_NO_ERROR;
- icalcomponent *inner;
-
- impl = (struct icaldirset_impl*)store;
- icalerror_check_arg_rz( (store!=0), "store");
- icalerror_check_arg_rz( (comp!=0), "comp");
-
- errno = 0;
-
- icaldirset_add_uid(store,comp);
-
- /* Determine which cluster this object belongs in. This is a HACK */
-
- for(inner = icalcomponent_get_first_component(comp,ICAL_ANY_COMPONENT);
- inner != 0;
- inner = icalcomponent_get_next_component(comp,ICAL_ANY_COMPONENT)){
-
- dt = icalcomponent_get_first_property(inner,ICAL_DTSTAMP_PROPERTY);
-
- if (dt != 0){
- break;
- }
- }
-
- if (dt == 0){
-
- for(inner = icalcomponent_get_first_component(comp,ICAL_ANY_COMPONENT);
- inner != 0;
- inner = icalcomponent_get_next_component(comp,ICAL_ANY_COMPONENT)){
-
- dt = icalcomponent_get_first_property(inner,ICAL_DTSTART_PROPERTY);
-
- if (dt != 0){
- break;
- }
- }
-
- }
-
- if (dt == 0){
-
-
- icalerror_warn("The component does not have a DTSTAMP or DTSTART property, so it cannot be added to the store");
- icalerror_set_errno(ICAL_BADARG_ERROR);
- return ICAL_BADARG_ERROR;
- }
-
- v = icalproperty_get_value(dt);
-
- tm = icalvalue_get_datetime(v);
-
- snprintf(clustername,ICAL_PATH_MAX,"%s/%04d%02d",impl->dir,tm.year,tm.month);
-
- /* Load the cluster and insert the object */
-
- if(impl->cluster != 0 &&
- strcmp(clustername,icalfileset_path(impl->cluster)) != 0 ){
- icalfileset_free(impl->cluster);
- impl->cluster = 0;
- }
-
- if (impl->cluster == 0){
- impl->cluster = icalfileset_new(clustername);
-
- if (impl->cluster == 0){
- error = icalerrno;
- }
- }
-
- if (error != ICAL_NO_ERROR){
- icalerror_set_errno(error);
- return error;
- }
-
- /* Add the component to the cluster */
-
- icalfileset_add_component(impl->cluster,comp);
-
- icalfileset_mark(impl->cluster);
-
- return ICAL_NO_ERROR;
-}
-
-/* Remove a component in the current cluster. HACK. This routine is a
- "friend" of icalfileset, and breaks its encapsulation. It was
- either do it this way, or add several layers of interfaces that had
- no other use. */
-icalerrorenum icaldirset_remove_component(icaldirset* store, icaldirset* comp)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
-
- struct icalfileset_impl *filesetimpl =
- (struct icalfileset_impl*)impl->cluster;
-
- icalcomponent *filecomp = filesetimpl->cluster;
-
- icalcompiter i;
- int found = 0;
-
- icalerror_check_arg_re((store!=0),"store",ICAL_BADARG_ERROR);
- icalerror_check_arg_re((comp!=0),"comp",ICAL_BADARG_ERROR);
- icalerror_check_arg_re((impl->cluster!=0),"Cluster pointer",ICAL_USAGE_ERROR);
-
- for(i = icalcomponent_begin_component(filecomp,ICAL_ANY_COMPONENT);
- icalcompiter_deref(&i)!= 0; icalcompiter_next(&i)){
-
- icalcomponent *this = icalcompiter_deref(&i);
-
- if (this == comp){
- found = 1;
- break;
- }
- }
-
- if (found != 1){
- icalerror_warn("icaldirset_remove_component: component is not part of current cluster");
- icalerror_set_errno(ICAL_USAGE_ERROR);
- return ICAL_USAGE_ERROR;
- }
-
- icalfileset_remove_component(impl->cluster,comp);
-
- icalfileset_mark(impl->cluster);
-
- /* If the removal emptied the fileset, get the next fileset */
- if( icalfileset_count_components(impl->cluster,ICAL_ANY_COMPONENT)==0){
-
- icalerrorenum error = icaldirset_next_cluster(store);
-
- if(impl->cluster != 0 && error == ICAL_NO_ERROR){
- icalfileset_get_first_component(impl->cluster);
- } else {
- /* HACK. Not strictly correct for impl->cluster==0 */
- return error;
- }
- } else {
- /* Do nothing */
- }
-
- return ICAL_NO_ERROR;
-}
-
-
-
-int icaldirset_count_components(icaldirset* store,
- icalcomponent_kind kind)
-{
- /* HACK, not implemented */
-
- assert(0);
-
- return 0;
-}
-
-
-icalcomponent* icaldirset_fetch_match(icaldirset* set, icalcomponent *c)
-{
- fprintf(stderr," icaldirset_fetch_match is not implemented\n");
- assert(0);
-}
-
-
-icalcomponent* icaldirset_fetch(icaldirset* store, const char* uid)
-{
- icalcomponent *gauge;
- icalcomponent *old_gauge;
- icalcomponent *c;
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
-
- icalerror_check_arg_rz( (store!=0), "store");
- icalerror_check_arg_rz( (uid!=0), "uid");
-
- gauge =
- icalcomponent_vanew(
- ICAL_VCALENDAR_COMPONENT,
- icalcomponent_vanew(
- ICAL_VEVENT_COMPONENT,
- icalproperty_vanew_uid(
- uid,
- icalparameter_new_xliccomparetype(
- ICAL_XLICCOMPARETYPE_EQUAL),
- 0),
- 0),
- 0);
-
- old_gauge = impl->gauge;
- impl->gauge = gauge;
-
- c= icaldirset_get_first_component(store);
-
- impl->gauge = old_gauge;
-
- icalcomponent_free(gauge);
-
- return c;
-}
-
-
-int icaldirset_has_uid(icaldirset* store, const char* uid)
-{
- icalcomponent *c;
-
- icalerror_check_arg_rz( (store!=0), "store");
- icalerror_check_arg_rz( (uid!=0), "uid");
-
- /* HACK. This is a temporary implementation. _has_uid should use a
- database, and _fetch should use _has_uid, not the other way
- around */
- c = icaldirset_fetch(store,uid);
-
- return c!=0;
-
-}
-
-
-icalerrorenum icaldirset_select(icaldirset* store, icalcomponent* gauge)
- {
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
-
- icalerror_check_arg_re( (store!=0), "store",ICAL_BADARG_ERROR);
- icalerror_check_arg_re( (gauge!=0), "gauge",ICAL_BADARG_ERROR);
-
- if (!icalcomponent_is_valid(gauge)){
- return ICAL_BADARG_ERROR;
- }
-
- impl->gauge = gauge;
-
- return ICAL_NO_ERROR;
-}
-
-
-icalerrorenum icaldirset_modify(icaldirset* store, icalcomponent *old,
- icalcomponent *new)
-{
- assert(0);
- return ICAL_NO_ERROR; /* HACK, not implemented */
-
-}
-
-
-void icaldirset_clear(icaldirset* store)
-{
-
- assert(0);
- return;
- /* HACK, not implemented */
-}
-
-icalcomponent* icaldirset_get_current_component(icaldirset* store)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
-
- if(impl->cluster == 0){
- icaldirset_get_first_component(store);
- }
-
- return icalfileset_get_current_component(impl->cluster);
-
-}
-
-
-icalcomponent* icaldirset_get_first_component(icaldirset* store)
-{
- struct icaldirset_impl *impl = (struct icaldirset_impl*)store;
- icalerrorenum error;
- char path[ICAL_PATH_MAX];
-
- error = icaldirset_read_directory(impl);
-
- if (error != ICAL_NO_ERROR){
- icalerror_set_errno(error);
- return 0;
- }
-
- impl->directory_iterator = pvl_head(impl->directory);
-
- if (impl->directory_iterator == 0){
- icalerror_set_errno(error);
- return 0;
- }
-
- snprintf(path,ICAL_PATH_MAX,"%s/%s",impl->dir,(char*)pvl_data(impl->directory_iterator));
-
- /* If the next cluster we need is different than the current cluster,
- delete the current one and get a new one */
-
- if(impl->cluster != 0 && strcmp(path,icalfileset_path(impl->cluster)) != 0 ){
- icalfileset_free(impl->cluster);
- impl->cluster = 0;
- }
-
- if (impl->cluster == 0){
- impl->cluster = icalfileset_new(path);
-
- if (impl->cluster == 0){
- error = icalerrno;
- }
- }
-
- if (error != ICAL_NO_ERROR){
- icalerror_set_errno(error);
- return 0;
- }
-
- impl->first_component = 1;
-
- return icaldirset_get_next_component(store);
-}
-
-icalcomponent* icaldirset_get_next_component(icaldirset* store)
-{
- struct icaldirset_impl *impl;
- icalcomponent *c;
- icalerrorenum error;
-
- icalerror_check_arg_rz( (store!=0), "store");
-
- impl = (struct icaldirset_impl*)store;
-
- if(impl->cluster == 0){
-
- icalerror_warn("icaldirset_get_next_component called with a NULL cluster (Caller must call icaldirset_get_first_component first");
- icalerror_set_errno(ICAL_USAGE_ERROR);
- return 0;
-
- }
-
- /* Set the component iterator for the following for loop */
- if (impl->first_component == 1){
- icalfileset_get_first_component(impl->cluster);
- impl->first_component = 0;
- } else {
- icalfileset_get_next_component(impl->cluster);
- }
-
-
- while(1){
- /* Iterate through all of the objects in the cluster*/
- for( c = icalfileset_get_current_component(impl->cluster);
- c != 0;
- c = icalfileset_get_next_component(impl->cluster)){
-
- /* If there is a gauge defined and the component does not
- pass the gauge, skip the rest of the loop */
-
-#if 0 /* HACK */
- if (impl->gauge != 0 && icalgauge_test(c,impl->gauge) == 0){
- continue;
- }
-#else
- assert(0); /* icalgauge_test needs to be fixed */
-#endif
- /* Either there is no gauge, or the component passed the
- gauge, so return it*/
-
- return c;
- }
-
- /* Fell through the loop, so the component we want is not
- in this cluster. Load a new cluster and try again.*/
-
- error = icaldirset_next_cluster(store);
-
- if(impl->cluster == 0 || error != ICAL_NO_ERROR){
- /* No more clusters */
- return 0;
- } else {
- c = icalfileset_get_first_component(impl->cluster);
-
- return c;
- }
-
- }
-
- return 0; /* Should never get here */
-}
-
-
-
-
-
-
-
generated by cgit (git 2.34.1) at 2024-11-22 11:18:15 +0800