Add easy_strings, S8_List iterator

build_tool/easy_strings.cpp

@@ -0,0 +1,100 @@
+S8_String Fmt(const char *str, ...) S8__PrintfFormat(1, 2);
+
+Array<S8_String> operator+(Array<S8_String> a, Array<S8_String> b) {
+    Array<S8_String> c = a.copy(*Perm);
+    c.add_array(b);
+    return c;
+}
+
+Array<S8_String> operator+(Array<S8_String> a, S8_String b) {
+    Array<S8_String> c = a.copy(*Perm);
+    c.add(b);
+    return c;
+}
+
+Array<S8_String> operator+(S8_String a, Array<S8_String> b) {
+    Array<S8_String> c = b.copy(*Perm);
+    c.insert(a, 0);
+    return c;
+}
+
+Array<S8_String> operator+(S8_String a, S8_String b) {
+    Array<S8_String> c = {*Perm};
+    c.add(a);
+    c.add(b);
+    return c;
+}
+
+Array<S8_String> &operator+=(Array<S8_String> &a, Array<S8_String> b) {
+    a.add_array(b);
+    return a;
+}
+
+Array<S8_String> &operator+=(Array<S8_String> &a, S8_String s) {
+    a.add(s);
+    return a;
+}
+
+//@todo: split on any whitespace instead!
+Array<S8_String> Split(char *str) {
+    S8_String s = S8_MakeFromChar(str);
+    S8_List list = S8_Split(Perm, s, S8_Lit(" "), 0);
+
+    Array<S8_String> result = {*Perm};
+    S8_For(it, list) result.add(it->string);
+    return result;
+}
+
+S8_String Merge(Array<S8_String> list, S8_String separator = " "_s) {
+    int64_t char_count = 0;
+    For(list) char_count += it.len;
+    if (char_count == 0) return {};
+    int64_t node_count = list.len;
+
+    int64_t base_size = (char_count + 1);
+    int64_t sep_size = (node_count - 1) * separator.len;
+    int64_t size = base_size + sep_size;
+    char *buff = (char *)MA_PushSize(Perm, sizeof(char) * size);
+    S8_String string = S8_Make(buff, 0);
+    For(list) {
+        IO_Assert(string.len + it.len <= size);
+        MA_MemoryCopy(string.str + string.len, it.str, it.len);
+        string.len += it.len;
+        if (!list.is_last(it)) {
+            MA_MemoryCopy(string.str + string.len, separator.str, separator.len);
+            string.len += separator.len;
+        }
+    }
+    IO_Assert(string.len == size - 1);
+    string.str[size] = 0;
+    return string;
+}
+
+S8_String Fmt(const char *str, ...) {
+    S8_FORMAT(Perm, str, str_fmt);
+    return str_fmt;
+}
+
+bool CodeWasModified(S8_String str, S8_String artifact = {}) {
+    return SRC_WasModified(str, artifact);
+}
+
+S8_String IfCodeWasModified(S8_String cfile, S8_String objfile) {
+    Array<S8_String> result = {};
+    if (SRC_WasModified(cfile, objfile))
+        return cfile;
+    return objfile;
+}
+
+int Run(Array<S8_String> s) {
+    S8_String cmd = Merge(s);
+    return OS_SystemF("%.*s", S8_Expand(cmd));
+}
+
+Array<S8_String> ListDir(char *dir) {
+    Array<S8_String> result = {};
+    for (OS_FileIter it = OS_IterateFiles(Perm, S8_MakeFromChar(dir)); OS_IsValid(it); OS_Advance(&it)) {
+        result.add(S8_Copy(Perm, it.absolute_path));
+    }
+    return result;
+}