2 #include <atalk/standards.h>
11 #include <atalk/talloc.h>
12 #include <atalk/logger.h>
13 #include <atalk/errchk.h>
14 #include <atalk/spotlight.h>
16 #include "slmod_sparql_map.h"
18 struct yy_buffer_state;
19 typedef struct yy_buffer_state *YY_BUFFER_STATE;
20 extern int yylex (void);
21 extern void yyerror (char const *);
22 extern void *yyterminate(void);
23 extern YY_BUFFER_STATE yy_scan_string( const char *str);
24 extern void yy_delete_buffer ( YY_BUFFER_STATE buffer );
26 /* forward declarations */
27 static const char *map_expr(const char *attr, char op, const char *val);
28 static const char *map_daterange(const char *dateattr, time_t date1, time_t date2);
29 static time_t isodate2unix(const char *s);
31 /* global vars, eg needed by the lexer */
35 static gchar *ssp_result;
36 static char sparqlvar;
40 #define SPRAW_TIME_OFFSET 978307200
41 extern int map_spotlight_to_sparql_query(slq_t *slq, gchar **sparql_result);
42 extern slq_t *ssp_slq;
55 %type <sval> match expr line function
62 %token OBRACE CBRACE EQUAL UNEQUAL GT LT COMMA QUOTE
74 ssp_result = talloc_asprintf(ssp_slq,
75 "SELECT DISTINCT ?url WHERE "
76 "{ ?obj nie:url ?url FILTER(regex(?url, '^file://%s/')) . %s}",
77 ssp_slq->slq_vol->v_path, $1);
90 if (strcmp($1, $3) != 0)
91 $$ = talloc_asprintf(ssp_slq, "{ %s } UNION { %s }", $1, $3);
93 $$ = talloc_asprintf(ssp_slq, "%s", $1);
95 | match {$$ = $1; if ($$ == NULL) YYABORT;}
97 | OBRACE expr CBRACE {$$ = talloc_asprintf(ssp_slq, "%s", $2);}
98 | expr AND expr {$$ = talloc_asprintf(ssp_slq, "%s . %s", $1, $3);}
100 if (strcmp($1, $3) != 0)
101 $$ = talloc_asprintf(ssp_slq, "{ %s } UNION { %s }", $1, $3);
103 $$ = talloc_asprintf(ssp_slq, "%s", $1);
108 WORD EQUAL QUOTE WORD QUOTE {$$ = map_expr($1, '=', $4);}
109 | WORD UNEQUAL QUOTE WORD QUOTE {$$ = map_expr($1, '!', $4);}
110 | WORD LT QUOTE WORD QUOTE {$$ = map_expr($1, '<', $4);}
111 | WORD GT QUOTE WORD QUOTE {$$ = map_expr($1, '>', $4);}
112 | WORD EQUAL QUOTE WORD QUOTE WORD {$$ = map_expr($1, '=', $4);}
113 | WORD UNEQUAL QUOTE WORD QUOTE WORD {$$ = map_expr($1, '!', $4);}
114 | WORD LT QUOTE WORD QUOTE WORD {$$ = map_expr($1, '<', $4);}
115 | WORD GT QUOTE WORD QUOTE WORD {$$ = map_expr($1, '>', $4);}
119 FUNC_INRANGE OBRACE WORD COMMA date COMMA date CBRACE {$$ = map_daterange($3, $5, $7);}
123 DATE_ISO OBRACE WORD CBRACE {$$ = isodate2unix($3);}
124 | WORD {$$ = atoi($1) + SPRAW_TIME_OFFSET;}
129 static time_t isodate2unix(const char *s)
133 if (strptime(s, "%Y-%m-%dT%H:%M:%SZ", &tm) == NULL)
138 static const char *map_daterange(const char *dateattr, time_t date1, time_t date2)
142 struct spotlight_sparql_map *p;
144 char buf1[64], buf2[64];
146 EC_NULL_LOG( tmp = localtime(&date1) );
147 strftime(buf1, sizeof(buf1), "%Y-%m-%dT%H:%M:%SZ", tmp);
148 EC_NULL_LOG( tmp = localtime(&date2) );
149 strftime(buf2, sizeof(buf2), "%Y-%m-%dT%H:%M:%SZ", tmp);
151 for (p = spotlight_sparql_map; p->ssm_spotlight_attr; p++) {
152 if (strcmp(dateattr, p->ssm_spotlight_attr) == 0) {
153 result = talloc_asprintf(ssp_slq,
154 "?obj %s ?%c FILTER (?%c > '%s' && ?%c < '%s')",
172 static char *map_type_search(const char *attr, char op, const char *val)
175 const char *sparqlAttr;
177 for (struct MDTypeMap *p = MDTypeMap; p->mdtm_value; p++) {
178 if (strcmp(p->mdtm_value, val) == 0) {
179 switch (p->mdtm_type) {
181 sparqlAttr = "rdf:type";
184 sparqlAttr = "nie:mimeType";
189 result = talloc_asprintf(ssp_slq, "?obj %s '%s'",
198 static const char *map_expr(const char *attr, char op, const char *val)
202 struct spotlight_sparql_map *p;
206 bstring q = NULL, search = NULL, replace = NULL;
208 for (p = spotlight_sparql_map; p->ssm_spotlight_attr; p++) {
209 if (strcmp(p->ssm_spotlight_attr, attr) == 0) {
210 if (p->ssm_type != ssmt_type && p->ssm_sparql_attr == NULL) {
211 yyerror("unsupported Spotlight attribute");
214 switch (p->ssm_type) {
216 result = talloc_asprintf(ssp_slq, "?obj %s '%s'", p->ssm_sparql_attr, val);
219 result = talloc_asprintf(ssp_slq, "?obj %s ?%c FILTER(?%c %c%c '%s')",
224 op == '!' ? '=' : ' ', /* append '=' to '!' */
229 q = bformat("^%s$", val);
230 search = bfromcstr("*");
231 replace = bfromcstr(".*");
232 bfindreplace(q, search, replace, 0);
233 result = talloc_asprintf(ssp_slq, "?obj %s ?%c FILTER(regex(?%c, '%s'))",
241 result = talloc_asprintf(ssp_slq, "?obj %s '%s'", p->ssm_sparql_attr, val);
244 t = atoi(val) + SPRAW_TIME_OFFSET;
245 EC_NULL( tmp = localtime(&t) );
246 strftime(buf1, sizeof(buf1), "%Y-%m-%dT%H:%M:%SZ", tmp);
247 result = talloc_asprintf(ssp_slq, "?obj %s ?%c FILTER(?%c %c '%s')",
256 result = map_type_search(attr, op, val);
275 void yyerror(const char *str)
278 printf("yyerror: %s\n", str);
280 LOG(log_error, logtype_sl, "yyerror: %s", str);
290 * Map a Spotlight RAW query string to a SPARQL query string
292 * @param[in] slq Spotlight query handle
293 * @param[out] sparql_result Mapped SPARQL query, string is allocated in
294 * talloc context of slq
295 * @return 0 on success, -1 on error
297 int map_spotlight_to_sparql_query(slq_t *slq, gchar **sparql_result)
300 YY_BUFFER_STATE s = NULL;
304 s = yy_scan_string(slq->slq_qstring);
307 EC_ZERO( yyparse() );
313 *sparql_result = ssp_result;
315 *sparql_result = NULL;
320 int main(int argc, char **argv)
326 printf("usage: %s QUERY\n", argv[0]);
330 ssp_slq = talloc_zero(NULL, slq_t);
331 struct vol *vol = talloc_zero(ssp_slq, struct vol);
332 vol->v_path = "/Volumes/test";
333 ssp_slq->slq_vol = vol;
336 s = yy_scan_string(argv[1]);
343 printf("SPARQL: %s\n", ssp_result ? ssp_result : "(empty)");