add leading +/, for greater or less than

1 files changed, 28 insertions, 5 deletions

diff --git a/booki.c b/booki.c
index 32ad609..c25ec91 100644
--- a/booki.c
+++ b/booki.c
@@ -462,15 +462,38 @@ bool match_string(const char* pattern, const struct es text) {
     return valid;
 }
 
-bool match_int(const char* pattern, const int candidate) {
-    // need to parse the pattern to an int
+bool match_int(char* pattern, int candidate) {
+    // we don't want to match the zero value, unless the pattern is also 0
+    if (candidate == 0 && strcmp(pattern, "0") != 0)
+        return false;
+
+    // check for leading signs
+    char* current_pos = pattern;
+    bool lt = false;
+    bool gt = false;
+    if (*current_pos == '+') {
+        gt = true;
+        current_pos++;
+    } else if (*current_pos == ',') {
+        lt = true;
+        current_pos++;
+    }
+
+    // parse the string to an int
     char* endptr;
-    long ret = strtol(pattern, &endptr, 10);
+    long ret = strtol(current_pos, &endptr, 10);
     if (*endptr != '\0') {
-        printf("couldn't parse int!\n");
+        printf("couldn't parse pattern as int: '%s'\n", pattern);
         return false;
     }
-    return ret == candidate;
+
+    // do compares
+    if (lt)
+        return candidate < ret;
+    else if (gt)
+        return candidate > ret;
+    else
+        return ret == candidate;
 }
 
 static struct option search_options[] = {