remove ?utm for strings

TODO.md

@@ -1,5 +1,9 @@
 # To do
 
+- [ ] Look into improving speed and performance:
+  - [ ] Creating objects only once, e.g., for js strings that I execte
+  - [ ] Look into using global controllers, rather than one for each webview
+  - [ ] etc.
 - [ ] Move to a later C standard (C11?) and use safer string handling functions provided by it.
   - The thing is, I kinda feel attached to C89-C99
 - [ ] Consider

plugins/libre_redirect/libre_redirect.c

@@ -68,5 +68,7 @@ int libre_redirect(const char* uri, char* output)
         }
         strcpy(output, uri);
     }
-    return 0;
+
+    int utm_check = str_destructively_omit_from(output, "?utm");
+    return utm_check * 2;
 }

plugins/strings/strings.c

@@ -59,3 +59,26 @@ See also:
 * <https://web.archive.org/web/20160201212501/coding.debuntu.org/c-implementing-str_replace-replace-all-occurrences-substring>
 * https://github.com/irl/la-cucina/blob/master/str_replace.c
 */
+
+
+int str_destructively_omit_from(char* input, const char* from){
+    // input = "https://url.com/?utm=blah", from = "?utm"
+    int l1 = strlen(input);
+    int l2 = strlen(from);
+
+    for(int i=0; i<l1; i++){
+        if((i + l2) > l1) { // no more room 
+            continue;
+        }
+        for(int j=0; j<l2; j++){
+            if(input[i+j] != from[j]){
+                goto cont;
+            }
+        }
+        input[i]='\0';
+        printf("Replaced utm %s\n", input);
+        return 1;
+        cont:;
+    }
+    return 0;
+}

plugins/strings/strings.h

@@ -2,3 +2,4 @@
 
 void str_init(char* str, int n);
 int str_replace_start(const char* string, const char* target, const char* replacement, char* output);
+int str_destructively_omit_from(const char* input, const char* from);

plugins/style/style.c

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#define STYLE_N 9331 + 1000
+#define STYLE_N 9379 + 1000
 
 void read_style_js(char* string)
 {

plugins/style/style.h

@@ -1,5 +1,5 @@
 #pragma once
 
-#define STYLE_N 9331 + 1000
+#define STYLE_N 9379 + 1000
 
 void read_style_js(char* string);