added extended error info to text parser API; GameConfigs now display better errors

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401821

core/GameConfigs.cpp

@@ -508,14 +508,9 @@ bool CGameConfig::Reparse(char *error, size_t maxlength)
 	sm_trie_clear(m_pProps);
 	sm_trie_clear(m_pKeys);
 
-	if ((err=textparsers->ParseFile_SMC(path, this, NULL))
+	if ((err=textparsers->ParseSMCFile(path, this, NULL, error, maxlength))
 		!= SMCError_Okay)
 	{
-		if (error && (err != SMCError_Custom))
-		{
-			const char *str = textparsers->GetSMCErrorString(err);
-			snprintf(error, maxlength, "%s", str);
-		}
 		return false;
 	}
 

core/TextParsers.cpp

@@ -37,6 +37,8 @@
 #include <assert.h>
 #include "TextParsers.h"
 #include "ShareSys.h"
+#include "sm_stringutil.h"
+#include "LibrarySys.h"
 
 TextParsers g_TextParser;
 ITextParsers *textparsers = &g_TextParser;
@@ -155,6 +157,38 @@ SMCError TextParsers::ParseFile_SMC(const char *file, ITextListener_SMC *smc, SM
 	return result;
 }
 
+SMCError TextParsers::ParseSMCFile(const char *file,
+								   ITextListener_SMC *smc_listener,
+								   SMCStates *states,
+								   char *buffer,
+								   size_t maxsize)
+{
+	const char *errstr;
+	FILE *fp = fopen(file, "rt");
+
+	if (fp == NULL)
+	{
+		char error[256] = "unknown";
+		if (states != NULL)
+		{
+			states->line = 0;
+			states->col = 0;
+		}
+		g_LibSys.GetPlatformError(error, sizeof(error));
+		UTIL_Format(buffer, maxsize, "File could not be opened: %s", error);
+		return SMCError_StreamOpen;
+	}
+
+	SMCError result = ParseStream_SMC(fp, FileStreamReader, smc_listener, states);
+
+	fclose(fp);
+
+	errstr = GetSMCErrorString(result);
+	UTIL_Format(buffer, maxsize, "%s", errstr != NULL ? errstr : "Unknown error");
+
+	return result;
+}
+
 /** 
  * Raw parsing of streams with helper functions
  */

core/TextParsers.h

@@ -64,6 +64,12 @@ public:
 		ITextListener_SMC *smc_listener, 
 		SMCStates *states);
 
+	SMCError ParseSMCFile(const char *file,
+			ITextListener_SMC *smc_listener,
+			SMCStates *states,
+			char *buffer,
+			size_t maxsize);
+
 	unsigned int GetUTF8CharBytes(const char *stream);
 
 	const char *GetSMCErrorString(SMCError err);