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| author | Joe Ludwig <[email protected]> | 2013-06-26 15:22:04 -0700 |
|---|---|---|
| committer | Joe Ludwig <[email protected]> | 2013-06-26 15:22:04 -0700 |
| commit | 39ed87570bdb2f86969d4be821c94b722dc71179 (patch) | |
| tree | abc53757f75f40c80278e87650ea92808274aa59 /mp/src/public/filesystem_helpers.cpp | |
| download | source-sdk-2013-39ed87570bdb2f86969d4be821c94b722dc71179.tar.xz source-sdk-2013-39ed87570bdb2f86969d4be821c94b722dc71179.zip | |
First version of the SOurce SDK 2013
Diffstat (limited to 'mp/src/public/filesystem_helpers.cpp')
| -rw-r--r-- | mp/src/public/filesystem_helpers.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/mp/src/public/filesystem_helpers.cpp b/mp/src/public/filesystem_helpers.cpp new file mode 100644 index 00000000..4e1ea169 --- /dev/null +++ b/mp/src/public/filesystem_helpers.cpp @@ -0,0 +1,129 @@ +//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose:
+//
+//=====================================================================================//
+
+#include "filesystem.h"
+#include "filesystem_helpers.h"
+#include "characterset.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+// wordbreak parsing set
+static characterset_t g_BreakSet, g_BreakSetIncludingColons;
+
+static void InitializeCharacterSets()
+{
+ static bool s_CharacterSetInitialized = false;
+ if (!s_CharacterSetInitialized)
+ {
+ CharacterSetBuild( &g_BreakSet, "{}()'" );
+ CharacterSetBuild( &g_BreakSetIncludingColons, "{}()':" );
+ s_CharacterSetInitialized = true;
+ }
+}
+
+
+const char* ParseFileInternal( const char* pFileBytes, char* pTokenOut, bool* pWasQuoted, characterset_t *pCharSet, size_t nMaxTokenLen )
+{
+ pTokenOut[0] = 0;
+
+ if (pWasQuoted)
+ *pWasQuoted = false;
+
+ if (!pFileBytes)
+ return 0;
+
+ InitializeCharacterSets();
+
+ // YWB: Ignore colons as token separators in COM_Parse
+ static bool com_ignorecolons = false;
+ characterset_t& breaks = pCharSet ? *pCharSet : (com_ignorecolons ? g_BreakSet : g_BreakSetIncludingColons);
+
+ int c;
+ unsigned int len = 0;
+
+// skip whitespace
+skipwhite:
+
+ while ( (c = *pFileBytes) <= ' ')
+ {
+ if (c == 0)
+ return 0; // end of file;
+ pFileBytes++;
+ }
+
+// skip // comments
+ if (c=='/' && pFileBytes[1] == '/')
+ {
+ while (*pFileBytes && *pFileBytes != '\n')
+ pFileBytes++;
+ goto skipwhite;
+ }
+
+// skip c-style comments
+ if (c=='/' && pFileBytes[1] == '*' )
+ {
+ // Skip "/*"
+ pFileBytes += 2;
+
+ while ( *pFileBytes )
+ {
+ if ( *pFileBytes == '*' &&
+ pFileBytes[1] == '/' )
+ {
+ pFileBytes += 2;
+ break;
+ }
+
+ pFileBytes++;
+ }
+
+ goto skipwhite;
+ }
+
+// handle quoted strings specially
+ if (c == '\"')
+ {
+ if (pWasQuoted)
+ *pWasQuoted = true;
+
+ pFileBytes++;
+ while (1)
+ {
+ c = *pFileBytes++;
+ if (c=='\"' || !c)
+ {
+ pTokenOut[len] = 0;
+ return pFileBytes;
+ }
+ pTokenOut[len] = c;
+ len += ( len < nMaxTokenLen-1 ) ? 1 : 0;
+ }
+ }
+
+// parse single characters
+ if ( IN_CHARACTERSET( breaks, c ) )
+ {
+ pTokenOut[len] = c;
+ len += ( len < nMaxTokenLen-1 ) ? 1 : 0;
+ pTokenOut[len] = 0;
+ return pFileBytes+1;
+ }
+
+// parse a regular word
+ do
+ {
+ pTokenOut[len] = c;
+ pFileBytes++;
+ len += ( len < nMaxTokenLen-1 ) ? 1 : 0;
+ c = *pFileBytes;
+ if ( IN_CHARACTERSET( breaks, c ) )
+ break;
+ } while (c>32);
+
+ pTokenOut[len] = 0;
+ return pFileBytes;
+}
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