*** empty log message ***

CVS patchset: 1672
CVS date: 1997/05/30 21:14:51

1 files changed, 121 insertions, 0 deletions

diff --git a/lib/lookup.c b/lib/lookup.c
new file mode 100644
index 000000000..3971c8c49
--- /dev/null
+++ b/lib/lookup.c
@@ -0,0 +1,121 @@
+#include "miscfn.h"
+
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+
+#include <string.h>
+
+#include "intl.h"
+#include "rpmlib.h"
+
+static int findMatches(rpmdb db, char * name, char * version, char * release,
+		       dbiIndexSet * matches);
+
+/* 0 found matches */
+/* 1 no matches */
+/* 2 error */
+int rpmdbFindByHeader(rpmdb db, Header h, dbiIndexSet * matches) {
+    char * name, * version, * release;
+
+    headerGetEntry(h, RPMTAG_NAME, NULL, (void **) &name, NULL);
+    headerGetEntry(h, RPMTAG_VERSION, NULL, (void **) &version, NULL);
+    headerGetEntry(h, RPMTAG_RELEASE, NULL, (void **) &release, NULL);
+
+    return findMatches(db, name, version, release, matches);
+}
+
+/* 0 found matches */
+/* 1 no matches */
+/* 2 error */
+int rpmdbFindByLabel(rpmdb db, char * arg, dbiIndexSet * matches) {
+    char * localarg, * chptr;
+    char * release;
+    int rc;
+ 
+    if (!strlen(arg)) return 1;
+
+    /* did they give us just a name? */
+    rc = findMatches(db, arg, NULL, NULL, matches);
+    if (rc != 1) return rc;
+
+    /* maybe a name and a release */
+    localarg = alloca(strlen(arg) + 1);
+    strcpy(localarg, arg);
+
+    chptr = (localarg + strlen(localarg)) - 1;
+    while (chptr > localarg && *chptr != '-') chptr--;
+    if (chptr == localarg) return 1;
+
+    *chptr = '\0';
+    rc = findMatches(db, localarg, chptr + 1, NULL, matches);
+    if (rc != 1) return rc;
+    
+    /* how about name-version-release? */
+
+    release = chptr + 1;
+    while (chptr > localarg && *chptr != '-') chptr--;
+    if (chptr == localarg) return 1;
+
+    *chptr = '\0';
+    return findMatches(db, localarg, chptr + 1, release, matches);
+}
+
+/* 0 found matches */
+/* 1 no matches */
+/* 2 error */
+static int findMatches(rpmdb db, char * name, char * version, char * release,
+		       dbiIndexSet * matches) {
+    int gotMatches;
+    int rc;
+    int i;
+    char * pkgRelease, * pkgVersion;
+    int count, type;
+    int goodRelease, goodVersion;
+    Header h;
+
+    if ((rc = rpmdbFindPackage(db, name, matches))) {
+	if (rc == -1) return 2; else return 1;
+    }
+
+    if (!version && !release) return 0;
+
+    gotMatches = 0;
+
+    /* make sure the version and releases match */
+    for (i = 0; i < matches->count; i++) {
+	if (matches->recs[i].recOffset) {
+	    h = rpmdbGetRecord(db, matches->recs[i].recOffset);
+	    if (!h) {
+		rpmError(RPMERR_DBCORRUPT, 
+			 _("cannot read header at %d for lookup"), 
+			matches->recs[i].recOffset);
+		dbiFreeIndexRecord(*matches);
+		return 2;
+	    }
+
+	    headerGetEntry(h, RPMTAG_VERSION, &type, (void **) &pkgVersion, 
+			   &count);
+	    headerGetEntry(h, RPMTAG_RELEASE, &type, (void **) &pkgRelease, 
+			   &count);
+	    
+	    goodRelease = goodVersion = 1;
+
+	    if (release && strcmp(release, pkgRelease)) goodRelease = 0;
+	    if (version && strcmp(version, pkgVersion)) goodVersion = 0;
+
+	    if (goodRelease && goodVersion) 
+		gotMatches = 1;
+	    else 
+		matches->recs[i].recOffset = 0;
+	}
+    }
+
+    if (!gotMatches) {
+	dbiFreeIndexRecord(*matches);
+	return 1;
+    }
+    
+    return 0;
+}
+