Changeset 2854 for trunk/kLdr/kLdrHlp.c

Timestamp:

Nov 3, 2006, 4:39:12 AM (19 years ago)

Author:

bird

Message:

Hacking away on the PE module interpreter.

File:

• trunk/kLdr/kLdrHlp.c (modified) (2 diffs)

trunk/kLdr/kLdrHlp.c

@@ -527 +527 @@
 
 /**
+ * Get the pointer to the filename part of the name.
+ *
+ * @returns Pointer to where the filename starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no filename.
+ * @param   pszFilename     The filename to parse.
+ */
+char   *kldrHlpGetFilename(const char *pszFilename)
+{
+    const char *pszLast = NULL;
+    for (;;)
+    {
+        char ch = *pszFilename;
+#if defined(__OS2__) || defined(__WIN__)
+        if (ch == '/' || ch == '\\' || ch == ':')
+        {
+            while ((ch = *++pszFilename) == '/' || ch == '\\' || ch == ':')
+                /* nothing */;
+            pszLast = pszFilename;
+        }
+#else
+        if (ch == '/')
+        {
+            while ((ch = *++pszFilename) == '/')
+                /* betsuni */;
+            pszLast = pszFilename;
+        }
+#endif
+        if (!ch)
+            return (char *)(pszLast ? pszLast : pszFilename);
+        pszFilename++;
+    }
+}
+
+
+/**
+ * Gets the filename suffix.
+ *
+ * @returns Pointer to where the suffix starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no suffix.
+ * @param   pszFilename     The filename to parse.
+ */
+char   *kldrHlpGetSuff(const char *pszFilename)
+{
+    const char *pszDot = NULL;
+    pszFilename = kldrHlpGetFilename(pszFilename);
+    for (;;)
+    {
+        char ch = *pszFilename;
+        if (ch == '.')
+        {
+            while ((ch = *++pszFilename) == '.')
+                /* nothing */;
+            if (ch)
+                pszDot = pszFilename - 1;
+        }
+        if (!ch)
+            return (char *)(pszDot ? pszDot : pszFilename);
+        pszFilename++;
+    }
+}
+
+
+/**
+ * Gets the filename extention.
+ *
+ * @returns Pointer to where the extension starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no extension.
+ * @param   pszFilename     The filename to parse.
+ */
+char   *kldrHlpGetExt(const char *pszFilename)
+{
+    char *psz = kldrHlpGetSuff(pszFilename);
+    return *psz ? psz + 1 : psz;
+}
+
+
+
+/**
  * Terminate the process.
  *
@@ -717 +795 @@
 #endif
 
+
+int     kLdrHlpMemIComp(const void *pv1, const void *pv2, size_t cb)
+{
+    const uint8_t *pb1 = (const uint8_t *)pv1;
+    const uint8_t *pb2 = (const uint8_t *)pv2;
+    while (cb)
+    {
+        if (*pb1 != *pb2)
+        {
+            const uint8_t u1 = *pb1 >= 'a' && *pb1 <= 'z' ? *pb1 - 'a' : *pb1;
+            const uint8_t u2 = *pb2 >= 'a' && *pb2 <= 'z' ? *pb2 - 'a' : *pb2;
+            if (u1 != u2)
+                return (int)*pb1 - (int)*pb2;
+        }
+        pb1++;
+        pb2++;
+    }
+    return 0;
+}
+
+
+int     kLdrHlpStrIComp(const char *pv1, const char *pv2)
+{
+    const uint8_t *pb1 = (const uint8_t *)pv1;
+    const uint8_t *pb2 = (const uint8_t *)pv2;
+    for (;;)
+    {
+        if (*pb1 != *pb2)
+        {
+            const uint8_t u1 = *pb1 >= 'a' && *pb1 <= 'z' ? *pb1 - 'a' : *pb1;
+            const uint8_t u2 = *pb2 >= 'a' && *pb2 <= 'z' ? *pb2 - 'a' : *pb2;
+            if (u1 != u2)
+                return (int)*pb1 - (int)*pb2;
+        }
+        if (!*pb1)
+            break;
+        pb1++;
+        pb2++;
+    }
+    return 0;
+}
+