Read on start and omit file type

src/transcript_browser/config.cpp

@@ -8,9 +8,17 @@ struct ConfigParseResult {
     Array<String> errors;
 };
 
-char SRTCommand[512] = "\"C:\\Program Files\\VideoLAN\\VLC\\vlc.exe\" --start-time {time_in_seconds} {video}";
-char PDFCommand[512] = "C:/Users/Karol/AppData/Local/SumatraPDF/SumatraPDF.exe -page {page} {file}";
-char TXTCommand[512] = "notepad.exe {file}";
+struct ReplaceVar {
+    String replace;
+    String with;
+};
+// @todo: move the config errors to config menu!!!
+
+char SRTCommand[512]        = "\"C:\\Program Files\\VideoLAN\\VLC\\vlc.exe\" --start-time {time_in_seconds} {video}";
+char PDFCommand[512]        = "C:/Users/Karol/AppData/Local/SumatraPDF/SumatraPDF.exe -page {page} {file}";
+char TXTCommand[512]        = "notepad.exe {file}";
+char ReadOnStart[512]       = "-";
+bool ReadFoldersRecursively = false;
 
 void SkipWhitespace(String *s) {
     while (s->len && IsWhitespace(s->data[0])) {
@@ -31,7 +39,7 @@ String ParseWord(String *s) {
     return result;
 }
 
-bool ExpectString(String *s, String expect) {
+bool MatchString(String *s, String expect) {
     SkipWhitespace(s);
     if (StartsWith(*s, expect)) {
         *s = s->skip(expect.len);
@@ -57,7 +65,7 @@ ConfigParseResult ParseConfig(Allocator allocator, String string) {
             result.errors.add(Format(allocator, "failed to parse config at line: %d, the key is invalid", (int)lines.get_index(it)));
             continue;
         }
-        bool e = ExpectString(&s, "=");
+        bool e = MatchString(&s, "=");
         if (!e) {
             result.errors.add(Format(allocator, "failed to parse config at line: %d, expected '=' assignment sign", (int)lines.get_index(it)));
             continue;
@@ -81,7 +89,7 @@ String GetValue(Array<Var> vars, String key) {
 }
 
 String SerializeConfig(Allocator allocator) {
-    String content = Format(allocator, "SRTCommand = %s\nPDFCommand = %s\nTXTCommand = %s\n", SRTCommand, PDFCommand, TXTCommand);
+    String content = Format(allocator, "SRTCommand = %s\nPDFCommand = %s\nTXTCommand = %s\nReadOnStart = %s", SRTCommand, PDFCommand, TXTCommand, ReadOnStart);
     return content;
 }
 
@@ -123,6 +131,12 @@ void LoadConfig() {
         memcpy(SRTCommand, srt_command.data, len);
         SRTCommand[len] = 0;
     }
+    String read_on_start = GetValue(result.vars, "ReadOnStart");
+    if (read_on_start.len) {
+        int len = ClampTop((int)read_on_start.len, (int)sizeof(ReadOnStart) - 1);
+        memcpy(ReadOnStart, read_on_start.data, len);
+        ReadOnStart[len] = 0;
+    }
 }
 
 void SaveConfig() {
@@ -133,6 +147,59 @@ void SaveConfig() {
     WriteFile(config_path, content);
 }
 
+String ReplaceVars(Allocator allocator, Array<ReplaceVar> vars_to_replace, String string) {
+    Array<char> sb = {allocator};
+    for (int64_t i = 0; i < string.len; i += 1) {
+        if (string[i] == '{') {
+
+            // extract the variable
+            i += 1;
+            String var = {string.data + i, 0};
+            for (; i < string.len && string[i] != '}'; i += 1)
+                var.len += 1;
+
+            // find the replacement
+            String found = "<not found>";
+            For(vars_to_replace) {
+                if (it.replace == var) {
+                    found = it.with;
+                    break;
+                }
+            }
+
+            For(found) sb.add(it);
+
+        } else sb.add(string[i]);
+    }
+
+    sb.add('\0');
+    String result = {sb.data, sb.len - 1};
+    return result;
+}
+
+void TestReplaceVars() {
+    Scratch           scratch;
+    Array<ReplaceVar> vars_to_replace = {scratch};
+    String            exe_folder      = GetExePath(scratch);
+    vars_to_replace.add({"exe_folder", exe_folder});
+    String data_folder = Format(scratch, "%.*s/data", FmtString(exe_folder));
+    vars_to_replace.add({"data_folder", data_folder});
+
+    {
+        String r = ReplaceVars(scratch, vars_to_replace, "{exe_folder}");
+        Assert(r == exe_folder);
+    }
+
+    {
+        String r = ReplaceVars(scratch, vars_to_replace, "{exe_folder}{data_folder}");
+        Assert(r == Format(scratch, "%.*s%.*s", FmtString(exe_folder), FmtString(data_folder)));
+    }
+    {
+        String r = ReplaceVars(scratch, vars_to_replace, "..{exe_folder}..{data_folder}..{exe_folder}asd");
+        Assert(r == Format(scratch, "..%.*s..%.*s..%.*sasd", FmtString(exe_folder), FmtString(data_folder), FmtString(exe_folder)));
+    }
+}
+
 void TestConfig() {
     Scratch scratch;
     {