Moving NSCP Directory Server from DirectoryBranch to TRUNK, initial drop. (foxworth)ldapserver7x

1 files changed, 123 insertions, 0 deletions

diff --git a/lib/libsi18n/getstrmem.c b/lib/libsi18n/getstrmem.c
new file mode 100644
index 00000000..b49b4cc6
--- /dev/null
+++ b/lib/libsi18n/getstrmem.c
@@ -0,0 +1,123 @@
+/** BEGIN COPYRIGHT BLOCK
+ * Copyright 2001 Sun Microsystems, Inc.
+ * Portions copyright 1999, 2001-2003 Netscape Communications Corporation.
+ * All rights reserved.
+ * END COPYRIGHT BLOCK **/
+
+#include <stdio.h>
+#include <string.h>
+
+#define COMPILE_STRINGS_IN_MEMORY
+
+static char emptyString[] = "";
+
+#ifdef COMPILE_STRINGS_IN_MEMORY
+
+typedef struct DATABIN {
+  char*    pLibraryName;
+  char**   pArrayOfLibraryStrings;
+  unsigned numberOfStringsInLibrary;
+  } DATABIN;
+
+#include "getstrmem.h"
+
+#endif
+
+#if 0 /* Example of getstrmem.h */
+      /* It is intended that this header file be generated by program dblink */
+
+      #define NUM_BUCKETS 2 /* must be power of 2 */
+
+      /* strings in library libalpha */
+      static char* libalpha[] = {
+        "",
+        "libalpha string 1",
+        "libalpha string 2",
+        "libalpha string 3",
+        "libalpha string 4",
+        emptyString };
+
+      /* strings in library libbeta */
+      static char* libbeta[] = {
+        "",
+        "libbeta string 1",
+        "libbeta string 2",
+        emptyString };
+
+      /* libraries in bucket for hashKey==0 */
+      static struct DATABIN bucket0[] = {
+        {emptyString, NULL,     0}};
+
+      /* libraries in bucket for hashKey==1 */
+      static struct DATABIN bucket1[] = {
+        {"libalpha",  libalpha, 5},
+        {"libbeta",   libbeta,  3},
+        {emptyString, NULL,     0}};
+
+      /* array of buckets */
+      static struct DATABIN* buckets[NUM_BUCKETS] = {
+        bucket0,
+        bucket1 };
+
+#endif /* end of example getstrmem.h */
+
+#define BUCKET_MASK NUM_BUCKETS-1
+
+char*
+XP_GetStringFromMemory(char* strLibraryName,int iToken)
+{
+  /*
+   * In memory model called by XP_GetStringFromDatabase
+   * does not use database (nsres, et al.).
+   *
+   * This function uses hash table for library lookup
+   * and direct lookup for string.
+   *
+   * This function is thread safe.
+   */
+
+#ifdef COMPILE_STRINGS_IN_MEMORY
+
+  unsigned hashKey;
+  int      found = 0;
+  unsigned uToken = iToken;
+  char*    cPtr;
+  DATABIN* pBucket;
+
+  /* calculate hash key */
+  hashKey = 0;
+  cPtr = strLibraryName;
+  while (*cPtr) {
+	hashKey += *(cPtr++);
+  }
+  hashKey &= BUCKET_MASK;
+
+  /* get bucket for this hash key */
+  pBucket = buckets[hashKey];
+
+  /* search overflow buckets */
+  while (*(pBucket->pLibraryName)!='\0') {
+    if (strcmp(pBucket->pLibraryName,strLibraryName)==0) {
+	  found = 1;
+	  break;
+    }
+    pBucket++;
+  }
+
+  if (!found) {
+    return emptyString;
+  }
+
+  if (uToken<=pBucket->numberOfStringsInLibrary) {
+      return pBucket->pArrayOfLibraryStrings[uToken];
+    } else {
+	  /* string token out of range */
+      return emptyString;
+    }
+
+#else
+
+  return emptyString;
+
+#endif
+}