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1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
094a497d | 3 | // $Id: error.cc,v 1.3 1998/07/12 23:58:46 jgg Exp $ |
578bfd0a AL |
4 | /* ###################################################################### |
5 | ||
6 | Global Erorr Class - Global error mechanism | |
7 | ||
8 | We use a simple STL vector to store each error record. A PendingFlag | |
9 | is kept which indicates when the vector contains a Sever error. | |
10 | ||
11 | This source is placed in the Public Domain, do with it what you will | |
12 | It was originally written by Jason Gunthorpe. | |
13 | ||
14 | ##################################################################### */ | |
15 | /*}}}*/ | |
16 | // Include Files /*{{{*/ | |
6c139d6e | 17 | #ifdef __GNUG__ |
094a497d | 18 | #pragma implementation "apt-pkg/error.h" |
6c139d6e AL |
19 | #endif |
20 | ||
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21 | #include <errno.h> |
22 | #include <stdio.h> | |
23 | #include <string.h> | |
24 | #include <stdarg.h> | |
25 | ||
094a497d | 26 | #include <apt-pkg/error.h> |
578bfd0a AL |
27 | /*}}}*/ |
28 | ||
29 | GlobalError *_error = new GlobalError; | |
30 | ||
31 | // GlobalError::GlobalError - Constructor /*{{{*/ | |
32 | // --------------------------------------------------------------------- | |
33 | /* */ | |
6c139d6e | 34 | GlobalError::GlobalError() : List(0), PendingFlag(false) |
578bfd0a AL |
35 | { |
36 | } | |
37 | /*}}}*/ | |
38 | // GlobalError::Errno - Get part of the error string from errno /*{{{*/ | |
39 | // --------------------------------------------------------------------- | |
40 | /* Function indicates the stdlib function that failed and Description is | |
41 | a user string that leads the text. Form is: | |
42 | Description - Function (errno: strerror) | |
43 | Carefull of the buffer overrun, sprintf. | |
44 | */ | |
45 | bool GlobalError::Errno(const char *Function,const char *Description,...) | |
46 | { | |
47 | va_list args; | |
48 | va_start(args,Description); | |
49 | ||
50 | // sprintf the description | |
51 | char S[400]; | |
52 | vsprintf(S,Description,args); | |
53 | sprintf(S + strlen(S)," - %s (%i %s)",Function,errno,strerror(errno)); | |
54 | ||
55 | // Put it on the list | |
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56 | Item *Itm = new Item; |
57 | Itm->Text = S; | |
58 | Itm->Error = true; | |
59 | Insert(Itm); | |
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60 | |
61 | PendingFlag = true; | |
62 | ||
63 | return false; | |
64 | } | |
65 | /*}}}*/ | |
66 | // GlobalError::Error - Add an error to the list /*{{{*/ | |
67 | // --------------------------------------------------------------------- | |
68 | /* Just vsprintfs and pushes */ | |
69 | bool GlobalError::Error(const char *Description,...) | |
70 | { | |
71 | va_list args; | |
72 | va_start(args,Description); | |
73 | ||
74 | // sprintf the description | |
75 | char S[400]; | |
76 | vsprintf(S,Description,args); | |
77 | ||
78 | // Put it on the list | |
6c139d6e AL |
79 | Item *Itm = new Item; |
80 | Itm->Text = S; | |
81 | Itm->Error = true; | |
82 | Insert(Itm); | |
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83 | |
84 | PendingFlag = true; | |
85 | ||
86 | return false; | |
87 | } | |
88 | /*}}}*/ | |
89 | // GlobalError::Warning - Add a warning to the list /*{{{*/ | |
90 | // --------------------------------------------------------------------- | |
91 | /* This doesn't set the pending error flag */ | |
92 | bool GlobalError::Warning(const char *Description,...) | |
93 | { | |
94 | va_list args; | |
95 | va_start(args,Description); | |
96 | ||
97 | // sprintf the description | |
98 | char S[400]; | |
99 | vsprintf(S,Description,args); | |
100 | ||
101 | // Put it on the list | |
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102 | Item *Itm = new Item; |
103 | Itm->Text = S; | |
104 | Itm->Error = false; | |
105 | Insert(Itm); | |
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106 | |
107 | return false; | |
108 | } | |
109 | /*}}}*/ | |
110 | // GlobalError::PopMessage - Pulls a single message out /*{{{*/ | |
111 | // --------------------------------------------------------------------- | |
112 | /* This should be used in a loop checking empty() each cycle. It returns | |
113 | true if the message is an error. */ | |
114 | bool GlobalError::PopMessage(string &Text) | |
115 | { | |
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116 | if (List == 0) |
117 | return false; | |
118 | ||
119 | bool Ret = List->Error; | |
120 | Text = List->Text; | |
121 | Item *Old = List; | |
122 | List = List->Next; | |
123 | delete Old; | |
124 | ||
578bfd0a | 125 | // This really should check the list to see if only warnings are left.. |
6c139d6e | 126 | if (List == 0) |
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127 | PendingFlag = false; |
128 | ||
129 | return Ret; | |
130 | } | |
131 | /*}}}*/ | |
132 | // GlobalError::DumpErrors - Dump all of the errors/warns to cerr /*{{{*/ | |
133 | // --------------------------------------------------------------------- | |
134 | /* */ | |
135 | void GlobalError::DumpErrors() | |
136 | { | |
137 | // Print any errors or warnings found | |
138 | string Err; | |
139 | while (empty() == false) | |
140 | { | |
141 | bool Type = PopMessage(Err); | |
142 | if (Type == true) | |
143 | cerr << "E: " << Err << endl; | |
144 | else | |
145 | cerr << "W: " << Err << endl; | |
146 | } | |
147 | } | |
148 | /*}}}*/ | |
6c139d6e AL |
149 | // GlobalError::Discard - Discard /*{{{*/ |
150 | // --------------------------------------------------------------------- | |
151 | /* */ | |
152 | void GlobalError::Discard() | |
153 | { | |
154 | while (List != 0) | |
155 | { | |
156 | Item *Old = List; | |
157 | List = List->Next; | |
158 | delete Old; | |
159 | } | |
160 | ||
161 | PendingFlag = false; | |
162 | }; | |
163 | /*}}}*/ | |
164 | // GlobalError::Insert - Insert a new item at the end /*{{{*/ | |
165 | // --------------------------------------------------------------------- | |
166 | /* */ | |
167 | void GlobalError::Insert(Item *Itm) | |
168 | { | |
169 | Item **End = &List; | |
170 | for (Item *I = List; I != 0; I = I->Next) | |
171 | End = &I->Next; | |
172 | Itm->Next = *End; | |
173 | *End = Itm; | |
174 | } | |
175 | /*}}}*/ |