1 files changed, 70 insertions, 0 deletions
diff --git a/src/osfp_common.c b/src/osfp_common.c
index 315fd88..6f6f596 100644
--- a/src/osfp_common.c
+++ b/src/osfp_common.c
@@ -1,3 +1,9 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/fcntl.h>
+
 #include "osfp_common.h"
 
 #include "osfp.h"
@@ -41,6 +47,70 @@ enum osfp_os_class_id osfp_os_class_name_to_id(char *name)
     return OSFP_OS_CLASS_MAX;
 }
 
+struct osfp_result *osfp_result_build(struct osfp_os_class_score *os_class_score, const char *matched)
+{
+    int i;
+    unsigned int tmp_score;
+    unsigned int likely_score;
+    enum osfp_os_class_id likely_os_class;
+    struct osfp_result *result;
+
+    result = calloc(1, sizeof(struct osfp_result));
+    if (result == NULL) {
+        goto exit;
+    }
+
+    likely_score = 0;
+    likely_os_class = OSFP_OS_CLASS_OTHERS;
+
+    // likely os score
+    for (i = 0; i < OSFP_OS_CLASS_MAX; i++) {
+        tmp_score = os_class_score->scores[i];
+
+        if (likely_score < tmp_score) {
+            likely_score = tmp_score;
+            likely_os_class = i;
+        }
+        result->details[i].score = tmp_score;
+    }
+
+    // prefiltered
+    if (likely_score == OSFP_PERCENTILE) {
+        goto end;
+    }
+
+    // too low to tell os class
+    if (likely_score < OSFP_LOWEST_SCORE_LIMIT) {
+        likely_os_class = OSFP_OS_CLASS_OTHERS;
+        goto end;
+    }
+
+    // when the tied likely scores appear between win/apple-like/unix-like, we throw unknown
+    for (i = 0; i < OSFP_OS_CLASS_MAX; i++) {
+        if (likely_os_class == i) {
+            continue;
+        }
+        if (likely_score != os_class_score->scores[i]) {
+            continue;
+        }
+        if (likely_os_class == OSFP_OS_CLASS_LINUX && i == OSFP_OS_CLASS_ANDROID) {
+            continue;
+        }
+        if (likely_os_class == OSFP_OS_CLASS_MAC_OS && i == OSFP_OS_CLASS_IOS) {
+            continue;
+        }
+        likely_os_class = OSFP_OS_CLASS_UNKNOWN;
+        break;
+    }
+
+end:
+    result->likely_os_class = likely_os_class;
+    result->matched = matched;
+    return result;
+exit:
+    return NULL;
+}
+
 void osfp_profile_counter_print(struct osfp_profile_counter *profile, const char *name)
 {
     printf("profile %s: avg: %lu max: %lu min: %lu curr: %lu total: %lu count: %lu\n",