2 Copyright (C) 2000-2004 SKYRIX Software AG
4 This file is part of OpenGroupware.org.
6 OGo is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 OGo is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with OGo; see the file COPYING. If not, write to the
18 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 #include "NGResourceLocator.h"
23 #include "NSNull+misc.h"
26 @implementation NGResourceLocator
28 + (id)resourceLocatorForGNUstepPath:(NSString *)_path fhsPath:(NSString *)_fhs{
29 return [[[self alloc] initWithGNUstepPath:_path fhsPath:_fhs] autorelease];
32 - (id)initWithGNUstepPath:(NSString *)_path fhsPath:(NSString *)_fhs {
33 if ((self = [super init])) {
34 self->gsSubPath = [_path copy];
35 self->fhsSubPath = [_fhs copy];
36 self->fileManager = [[NSFileManager defaultManager] retain];
38 self->flags.cacheSearchPathes = 1;
39 self->flags.cachePathMisses = 1;
40 self->flags.cachePathHits = 1;
45 return [self initWithGNUstepPath:@"Library/Resources" fhsPath:@"share"];
49 [self->nameToPathCache release];
50 [self->searchPathes release];
51 [self->fhsSubPath release];
52 [self->gsSubPath release];
53 [self->fileManager release];
59 - (NSArray *)gsRootPathes {
60 static NSArray *pathes = nil;
65 return [pathes isNotNull] ? pathes : nil;
67 env = [[NSProcessInfo processInfo] environment];
68 if ((apath = [env objectForKey:@"GNUSTEP_PATHPREFIX_LIST"]) == nil)
69 apath = [env objectForKey:@"GNUSTEP_PATHLIST"];
71 if (![apath isNotNull]) return nil;
72 pathes = [[apath componentsSeparatedByString:@":"] copy];
76 - (NSArray *)fhsRootPathes {
77 // TODO: we probably want to make this configurable?! At least with an envvar
78 static NSArray *pathes = nil;
80 pathes = [[NSArray alloc] initWithObjects:@"/usr/local/", @"/usr/", nil];
84 - (NSArray *)collectSearchPathes {
89 ma = [NSMutableArray arrayWithCapacity:6];
91 e = ([self->gsSubPath length] > 0)
92 ? [[self gsRootPathes] objectEnumerator]
94 while ((p = [e nextObject])) {
95 p = [p stringByAppendingPathComponent:self->gsSubPath];
96 if ([ma containsObject:p])
99 if (![self->fileManager fileExistsAtPath:p])
105 e = ([self->fhsSubPath length] > 0)
106 ? [[self fhsRootPathes] objectEnumerator]
108 while ((p = [e nextObject])) {
109 p = [p stringByAppendingPathComponent:self->fhsSubPath];
110 if ([ma containsObject:p])
113 if (![self->fileManager fileExistsAtPath:p])
122 - (NSArray *)searchPathes {
125 if (self->searchPathes != nil)
126 return self->searchPathes;
128 a = [self collectSearchPathes];
129 if (self->flags.cacheSearchPathes) {
130 ASSIGNCOPY(self->searchPathes, a);
131 return self->searchPathes; /* return copy */
139 - (void)cachePath:(NSString *)_path forName:(NSString *)_name {
140 if (self->nameToPathCache == nil)
141 self->nameToPathCache = [[NSMutableDictionary alloc] initWithCapacity:64];
143 [self->nameToPathCache setObject:_path?_path:(id)[NSNull null] forKey:_name];
148 - (NSString *)lookupFileWithName:(NSString *)_name {
152 if (![_name isNotNull] || [_name length] == 0)
154 if ((p = [self->nameToPathCache objectForKey:_name]))
155 return [p isNotNull] ? p : nil;
157 e = [[self searchPathes] objectEnumerator];
158 while ((p = [e nextObject])) {
159 p = [p stringByAppendingPathComponent:_name];
161 if (![self->fileManager fileExistsAtPath:p])
164 [self cachePath:p forName:_name];
168 if (self->flags.cachePathMisses)
169 [self cachePath:nil forName:_name];
173 - (NSString *)lookupFileWithName:(NSString *)_name extension:(NSString *)_ext {
174 if ([_ext isNotNull] && [_ext length] > 0)
175 _name = [_name stringByAppendingPathExtension:_ext];
176 return [self lookupFileWithName:_name];
179 @end /* NGResourceLocator */