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f9a691ef MT |
1 | /*############################################################################# |
2 | # # | |
3 | # Pakfire - The IPFire package management system # | |
4 | # Copyright (C) 2019 Pakfire development team # | |
5 | # # | |
6 | # This program is free software: you can redistribute it and/or modify # | |
7 | # it under the terms of the GNU General Public License as published by # | |
8 | # the Free Software Foundation, either version 3 of the License, or # | |
9 | # (at your option) any later version. # | |
10 | # # | |
11 | # This program is distributed in the hope that it will be useful, # | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
14 | # GNU General Public License for more details. # | |
15 | # # | |
16 | # You should have received a copy of the GNU General Public License # | |
17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
18 | # # | |
19 | #############################################################################*/ | |
20 | ||
21 | %{ | |
4f2a7bce MT |
22 | #include <stdio.h> |
23 | ||
a0258b56 | 24 | #include <pakfire/logging.h> |
35ebb186 MT |
25 | #include <pakfire/types.h> |
26 | ||
f9a691ef MT |
27 | #define YYERROR_VERBOSE 1 |
28 | ||
29 | typedef struct yy_buffer_state* YY_BUFFER_STATE; | |
30 | extern YY_BUFFER_STATE yy_scan_bytes(const char* buffer, size_t len); | |
31 | extern void yy_delete_buffer(YY_BUFFER_STATE buffer); | |
32 | ||
33 | extern int yylex(); | |
34 | extern int yyparse(); | |
6ab14b96 MT |
35 | |
36 | extern int num_lines; | |
e98f46a7 MT |
37 | static Pakfire pakfire; |
38 | static void yyerror(const char* s); | |
6b03e625 | 39 | |
4f2a7bce MT |
40 | static void cleanup(void); |
41 | #define ABORT do { cleanup(); YYABORT; } while (0); | |
42 | ||
f9a691ef MT |
43 | %} |
44 | ||
45 | %token APPEND | |
46 | %token ASSIGN | |
47 | %token DEFINE | |
48 | %token END | |
49 | %token NEWLINE | |
50 | %token TAB | |
f9a691ef | 51 | %token WHITESPACE |
6b03e625 | 52 | %token <string> WORD |
f9a691ef | 53 | |
68f7a6f7 MT |
54 | %type <string> line; |
55 | %type <string> text; | |
28afa9c2 MT |
56 | %type <string> variable; |
57 | %type <string> value; | |
6b03e625 | 58 | %type <string> words; |
28afa9c2 MT |
59 | |
60 | %union { | |
61 | char* string; | |
62 | } | |
f9a691ef | 63 | |
28afa9c2 | 64 | %% |
70425a92 | 65 | |
28afa9c2 MT |
66 | top : top empty |
67 | | top block | |
68 | | empty | |
69 | | block | |
70 | ; | |
71 | ||
72 | empty : WHITESPACE NEWLINE | |
73 | | NEWLINE | |
74 | ; | |
75 | ||
76 | // Optional whitespace | |
77 | whitespace : WHITESPACE | |
78 | | /* empty */ | |
79 | ; | |
80 | ||
6b03e625 | 81 | variable : WORD |
28afa9c2 MT |
82 | { |
83 | $$ = $1; | |
84 | }; | |
85 | ||
6b03e625 | 86 | value : words |
28afa9c2 MT |
87 | { |
88 | $$ = $1; | |
89 | } | |
90 | | /* empty */ | |
91 | { | |
92 | $$ = NULL; | |
93 | }; | |
94 | ||
6b03e625 MT |
95 | words : WORD |
96 | { | |
97 | $$ = $1; | |
98 | } | |
68f7a6f7 | 99 | | words WHITESPACE WORD |
4f2a7bce MT |
100 | { |
101 | int r = asprintf(&$$, "%s %s", $1, $3); | |
102 | if (r < 0) { | |
103 | ERROR(pakfire, "Could not allocate memory"); | |
104 | ABORT; | |
105 | } | |
106 | } | |
de528421 MT |
107 | | /* empty */ |
108 | { | |
109 | $$ = NULL; | |
110 | }; | |
68f7a6f7 MT |
111 | |
112 | line : whitespace words NEWLINE | |
113 | { | |
4f2a7bce MT |
114 | // Only forward words |
115 | $$ = $2; | |
68f7a6f7 MT |
116 | }; |
117 | ||
118 | text : text line | |
4f2a7bce MT |
119 | { |
120 | int r = asprintf(&$$, "%s\n%s", $1, $2); | |
121 | if (r < 0) { | |
122 | ERROR(pakfire, "Could not allocate memory"); | |
123 | ABORT; | |
124 | } | |
125 | } | |
68f7a6f7 | 126 | | line |
de528421 MT |
127 | | /* empty */ |
128 | { | |
129 | $$ = NULL; | |
130 | }; | |
6b03e625 | 131 | |
28afa9c2 MT |
132 | block_opening : variable NEWLINE |
133 | { | |
134 | printf("BLOCK OPEN: %s\n", $1); | |
135 | }; | |
136 | ||
137 | block_closing : END NEWLINE | |
138 | { | |
139 | printf("BLOCK CLOSED\n"); | |
140 | } | |
141 | ||
142 | block : block_opening assignments block_closing | |
143 | { | |
144 | printf("BLOCK FOUND\n"); | |
145 | }; | |
146 | ||
147 | assignments : assignments assignment | |
148 | | assignments empty | |
68f7a6f7 | 149 | | assignments block_assignment |
28afa9c2 MT |
150 | | /* empty */ |
151 | ; | |
152 | ||
153 | assignment : whitespace variable whitespace ASSIGN whitespace value whitespace NEWLINE | |
154 | { | |
155 | printf("ASSIGNMENT FOUND: %s = %s\n", $2, $6); | |
156 | }; | |
f9a691ef | 157 | |
68f7a6f7 MT |
158 | block_assignment : whitespace DEFINE WHITESPACE variable NEWLINE text whitespace END NEWLINE |
159 | { | |
160 | printf("BLOCK ASSIGNMENT: %s: %s\n", $4, $6); | |
161 | } | |
162 | ||
f9a691ef MT |
163 | %% |
164 | ||
4f2a7bce MT |
165 | static void cleanup(void) { |
166 | // Reset Pakfire pointer | |
167 | pakfire = NULL; | |
168 | } | |
169 | ||
e98f46a7 MT |
170 | int pakfire_parser_parse_metadata(Pakfire _pakfire, const char* data, size_t len) { |
171 | pakfire = _pakfire; | |
172 | ||
a0258b56 MT |
173 | DEBUG(pakfire, "Parsing the following data:\n%s\n", data); |
174 | ||
6ab14b96 MT |
175 | num_lines = 1; |
176 | ||
f9a691ef MT |
177 | YY_BUFFER_STATE buffer = yy_scan_bytes(data, len); |
178 | int r = yyparse(); | |
179 | yy_delete_buffer(buffer); | |
180 | ||
181 | return r; | |
182 | } | |
183 | ||
184 | void yyerror(const char* s) { | |
e98f46a7 | 185 | ERROR(pakfire, "Error (line %d): %s\n", num_lines, s); |
f9a691ef | 186 | } |