Version v0.2.20 - Add comprehensive help flag support and fix pad selection to prioritize hex prefix matching over number selection

otp.c

@@ -151,6 +151,14 @@ int interactive_mode(void) {
 }
 
 int command_line_mode(int argc, char* argv[]) {
+    // Check for help flags first
+    if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--h") == 0 || 
+        strcmp(argv[1], "-help") == 0 || strcmp(argv[1], "--help") == 0 || 
+        strcmp(argv[1], "help") == 0) {
+        print_usage(argv[0]);
+        return 0;
+    }
+    
     if (strcmp(argv[1], "generate") == 0 || strcmp(argv[1], "-g") == 0) {
         if (argc != 3) {
             printf("Usage: %s generate|-g <size>\n", argv[0]);
@@ -374,44 +382,45 @@ char* find_pad_by_prefix(const char* prefix) {
     char* matches[100];  // Store up to 100 matches
     int match_count = 0;
     
-    // Check if it's a number (for interactive menu selection)
-    // Only treat as number if it's a single digit (1-9) to avoid conflicts with hex prefixes
-    char* endptr;
-    int selection = strtol(prefix, &endptr, 10);
-    if (*endptr == '\0' && selection > 0 && selection <= 9 && strlen(prefix) == 1) {
-        // It's a number, find the nth pad
-        int current = 0;
-        rewinddir(dir);
-        while ((entry = readdir(dir)) != NULL && match_count == 0) {
-            // Skip . and .. entries, and only process .pad files
-            if (entry->d_name[0] == '.') continue;
-            if (!strstr(entry->d_name, ".pad")) continue;
-            if (strlen(entry->d_name) != 68) continue; // 64 char chksum + ".pad"
-            
-            current++;
-            if (current == selection) {
-                matches[match_count] = malloc(65);
-                strncpy(matches[match_count], entry->d_name, 64);
-                matches[match_count][64] = '\0';
-                match_count = 1;
-                break;
-            }
+    // Always try hex prefix matching first
+    size_t prefix_len = strlen(prefix);
+    while ((entry = readdir(dir)) != NULL && match_count < 100) {
+        // Skip . and .. entries, and only process .pad files
+        if (entry->d_name[0] == '.') continue;
+        if (!strstr(entry->d_name, ".pad")) continue;
+        if (strlen(entry->d_name) != 68) continue; // 64 char chksum + ".pad"
+        
+        // Compare prefix with the filename (checksum part)
+        if (strncmp(entry->d_name, prefix, prefix_len) == 0) {
+            matches[match_count] = malloc(65);
+            strncpy(matches[match_count], entry->d_name, 64);
+            matches[match_count][64] = '\0';
+            match_count++;
         }
-    } else {
-        // Find pads that start with the prefix
-        size_t prefix_len = strlen(prefix);
-        while ((entry = readdir(dir)) != NULL && match_count < 100) {
-            // Skip . and .. entries, and only process .pad files
-            if (entry->d_name[0] == '.') continue;
-            if (!strstr(entry->d_name, ".pad")) continue;
-            if (strlen(entry->d_name) != 68) continue; // 64 char chksum + ".pad"
-            
-            // Compare prefix with the filename (checksum part)
-            if (strncmp(entry->d_name, prefix, prefix_len) == 0) {
-                matches[match_count] = malloc(65);
-                strncpy(matches[match_count], entry->d_name, 64);
-                matches[match_count][64] = '\0';
-                match_count++;
+    }
+    
+    // If no hex prefix matches and it looks like a small number, try number selection
+    if (match_count == 0) {
+        char* endptr;
+        int selection = strtol(prefix, &endptr, 10);
+        if (*endptr == '\0' && selection > 0 && selection <= 100) {
+            // It's a number, find the nth pad
+            int current = 0;
+            rewinddir(dir);
+            while ((entry = readdir(dir)) != NULL) {
+                // Skip . and .. entries, and only process .pad files
+                if (entry->d_name[0] == '.') continue;
+                if (!strstr(entry->d_name, ".pad")) continue;
+                if (strlen(entry->d_name) != 68) continue; // 64 char chksum + ".pad"
+                
+                current++;
+                if (current == selection) {
+                    matches[match_count] = malloc(65);
+                    strncpy(matches[match_count], entry->d_name, 64);
+                    matches[match_count][64] = '\0';
+                    match_count = 1;
+                    break;
+                }
             }
         }
     }