chore(str): kill gotos in SStrTokenize (#42)

storm/String.cpp

@@ -469,81 +469,59 @@ void SStrTokenize(const char** string, char* buffer, size_t bufferchars, const c
     STORM_ASSERT(whitespace);
     STORM_VALIDATE(whitespace, ERROR_INVALID_PARAMETER);
 
+    int32_t checkquotes = SStrChr(whitespace, '"') != nullptr;
+
     int32_t inquotes = 0;
     int32_t usedquotes = 0;
-    auto curstring = *string;
+    const char* currsource = *string;
 
-    auto v17 = false;
+    while (*currsource && SStrChr(whitespace, *currsource)) {
-    for (const char* w = whitespace; w && *w; w++) {
+        if (checkquotes && *currsource == '"') {
-        if (*w == '"') {
+            usedquotes = 1;
-            v17 = true;
-            break;
-        }
-    }
-
-    while (*curstring && SStrChr(whitespace, *curstring)) {
-        if (v17 && *curstring == '"') {
             inquotes = 1;
-            usedquotes = 1;
+            currsource++;
-            curstring++;
 
             break;
         }
 
-        curstring++;
+        currsource++;
     }
 
-    uint32_t bufferlen = 0;
+    uint32_t destchars = 0;
 
-    if (*curstring) {
+    while(*currsource) {
-        auto curbuffer = buffer;
+        if (checkquotes && *currsource == '"') {
-
+            if (destchars && !inquotes) {
-        while (v17 && *curstring == '"') {
+                break;
-            if (bufferlen && !inquotes) {
-                goto LABEL_35;
             }
 
-            curstring++;
             usedquotes = 1;
-            inquotes = inquotes == 0;
+            inquotes = !inquotes;
+            currsource++;
 
             if (!inquotes) {
-                goto LABEL_35;
+                break;
             }
-LABEL_32:
+        }
-            if (!*curstring) {
+        else {
-                goto LABEL_35;
+            if (!inquotes && SStrChr(whitespace, *currsource)) {
+                currsource++;
+                break;
+            }
+
+            if (destchars + 1 < bufferchars) {
+                buffer[destchars] = *currsource;
+                destchars++;
+            }
+            currsource++;
         }
     }
 
-        if (inquotes) {
+    if (destchars < bufferchars) {
-LABEL_29:
+        buffer[destchars] = 0;
-            if (curbuffer - buffer < bufferchars) {
-                bufferlen++;
-                *curbuffer = *curstring;
-                curbuffer++;
     }
 
-            curstring++;
+    *string = currsource;
-
-            goto LABEL_32;
-        }
-
-        auto v14 = SStrChr(whitespace, *curstring);
-
-        if (!v14) {
-            goto LABEL_29;
-        }
-
-        curstring++;
-    }
-
-LABEL_35:
-    if (bufferlen < bufferchars) {
-        buffer[bufferlen] = 0;
-    }
-
-    *string = curstring;
 
     if (quoted) {
         *quoted = usedquotes;

test/String.cpp

@@ -291,6 +291,48 @@ TEST_CASE("SStrTokenize", "[string]") {
         SStrTokenize(&string, buffer, 1000, " ,", nullptr);
         REQUIRE(!SStrCmp(buffer, "", STORM_MAX_STR));
     }
+
+    SECTION("identifies quoted tokens") {
+        auto string = "foo bar \"baz bazinga\" bodonkers \"donga dongs\"";
+        char buffer[100] = { 0 };
+        std::pair<const char*, int> tokens[] = {
+            std::make_pair("foo", 0),
+            std::make_pair("bar", 0),
+            std::make_pair("baz bazinga", 1),
+            std::make_pair("bodonkers", 0),
+            std::make_pair("donga dongs", 1)
+        };
+
+        for (auto& token : tokens) {
+            int quoted = 0;
+            SStrTokenize(&string, buffer, 1000, " \"", &quoted);
+            std::string result = buffer;
+            REQUIRE(result == token.first);
+            REQUIRE(quoted == token.second);
+        }
+    }
+
+    SECTION("doesn't identify quoted tokens if excluded from whitespace") {
+        auto string = "foo bar \"baz bazinga\" bodonkers \"donga dongs\"";
+        char buffer[100] = { 0 };
+        std::pair<const char*, int> tokens[] = {
+            std::make_pair("foo", 0),
+            std::make_pair("bar", 0),
+            std::make_pair("\"baz", 0),
+            std::make_pair("bazinga\"", 0),
+            std::make_pair("bodonkers", 0),
+            std::make_pair("\"donga", 0),
+            std::make_pair("dongs\"", 0)
+        };
+
+        for (auto& token : tokens) {
+            int quoted = 0;
+            SStrTokenize(&string, buffer, 1000, " ", &quoted);
+            std::string result = buffer;
+            REQUIRE(result == token.first);
+            REQUIRE(quoted == token.second);
+        }
+    }
 }
 
 TEST_CASE("SStrToFloat", "[string]") {