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1// -*- mode: cpp; mode: fold -*-
2// Description /*{{{*/
aaee8293 3// $Id: srcrecords.cc,v 1.3 1999/10/18 04:15:24 jgg Exp $
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4/* ######################################################################
5
6 Source Package Records - Allows access to source package records
7
8 Parses and allows access to the list of source records and searching by
9 source name on that list.
10
11 ##################################################################### */
12 /*}}}*/
13// Include Files /*{{{*/
14#ifdef __GNUG__
15#pragma implementation "apt-pkg/srcrecords.h"
16#endif
17
18#include <apt-pkg/srcrecords.h>
19#include <apt-pkg/error.h>
20#include <apt-pkg/configuration.h>
21#include <apt-pkg/strutl.h>
22#include <apt-pkg/debsrcrecords.h>
23 /*}}}*/
24
25// SrcRecords::pkgSrcRecords - Constructor /*{{{*/
26// ---------------------------------------------------------------------
27/* Open all the source index files */
28pkgSrcRecords::pkgSrcRecords(pkgSourceList &List) : Files(0), Current(0)
29{
30 pkgSourceList::const_iterator I = List.begin();
31
32 // Count how many items we will need
33 unsigned int Count = 0;
34 for (; I != List.end(); I++)
35 if (I->Type == pkgSourceList::Item::DebSrc)
36 Count++;
37
38 // Doesnt work without any source index files
39 if (Count == 0)
40 {
41 _error->Error("Sorry, you must put some 'source' uris"
42 " in your sources.list");
43 return;
44 }
45
46 Files = new Parser *[Count+1];
47 memset(Files,0,sizeof(*Files)*(Count+1));
48
49 // Create the parser objects
50 Count = 0;
51 string Dir = _config->FindDir("Dir::State::lists");
52 for (I = List.begin(); I != List.end(); I++)
53 {
54 if (I->Type != pkgSourceList::Item::DebSrc)
55 continue;
56
57 // Open the file
58 FileFd *FD = new FileFd(Dir + URItoFileName(I->PackagesURI()),
59 FileFd::ReadOnly);
60 if (_error->PendingError() == true)
61 {
62 delete FD;
63 return;
64 }
65
36375005 66 Files[Count] = new debSrcRecordParser(FD,I);
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67 Count++;
68 }
aaee8293 69
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70 Restart();
71}
72 /*}}}*/
73// SrcRecords::~pkgSrcRecords - Destructor /*{{{*/
74// ---------------------------------------------------------------------
75/* */
76pkgSrcRecords::~pkgSrcRecords()
77{
78 if (Files == 0)
79 return;
80
81 // Blow away all the parser objects
82 for (unsigned int Count = 0; Files[Count] != 0; Count++)
83 delete Files[Count];
84}
85 /*}}}*/
86// SrcRecords::Restart - Restart the search /*{{{*/
87// ---------------------------------------------------------------------
88/* Return all of the parsers to their starting position */
89bool pkgSrcRecords::Restart()
90{
91 Current = Files;
92 for (Parser **I = Files; *I != 0; I++)
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93 (*I)->Restart();
94
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95 return true;
96}
97 /*}}}*/
98// SrcRecords::Find - Find the first source package with the given name /*{{{*/
99// ---------------------------------------------------------------------
100/* This searches on both source package names and output binary names and
101 returns the first found. A 'cursor' like system is used to allow this
102 function to be called multiple times to get successive entries */
103pkgSrcRecords::Parser *pkgSrcRecords::Find(const char *Package,bool SrcOnly)
104{
105 if (*Current == 0)
106 return 0;
107
108 while (true)
109 {
110 // Step to the next record, possibly switching files
111 while ((*Current)->Step() == false)
112 {
113 if (_error->PendingError() == true)
114 return 0;
115 Current++;
116 if (*Current == 0)
117 return 0;
118 }
119
120 // IO error somehow
121 if (_error->PendingError() == true)
122 return 0;
123
124 // Source name hit
125 if ((*Current)->Package() == Package)
126 return *Current;
127
128 if (SrcOnly == true)
129 continue;
130
131 // Check for a binary hit
132 const char **I = (*Current)->Binaries();
133 for (; I != 0 && *I != 0; I++)
134 if (strcmp(Package,*I) == 0)
135 return *Current;
136 }
137}
138 /*}}}*/
139