1 files changed, 108 insertions, 0 deletions
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpGetEnvUZ.c b/src/lib/kStuff/kHlp/Generic/kHlpGetEnvUZ.c
new file mode 100644
index 0000000..4721af7
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpGetEnvUZ.c
@@ -0,0 +1,108 @@
+/* $Id: kHlpGetEnvUZ.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpEnv - kHlpGetEnvUZ.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpEnv.h>
+#include <k/kHlpString.h>
+
+
+/**
+ * Gets an environment variable and converts it to a KSIZE.
+ *
+ * @returns 0 and *pcb on success.
+ * @returns On failure see kHlpGetEnv.
+ * @param   pszVar  The name of the variable.
+ * @param   pcb     Where to put the value.
+ */
+KHLP_DECL(int) kHlpGetEnvUZ(const char *pszVar, KSIZE *pcb)
+{
+    KSIZE       cb;
+    unsigned    uBase;
+    char        szVal[64];
+    KSIZE       cchVal = sizeof(szVal);
+    const char *psz;
+    int         rc;
+
+    *pcb = 0;
+    rc = kHlpGetEnv(pszVar, szVal, cchVal);
+    if (rc)
+        return rc;
+
+    /* figure out the base. */
+    uBase = 10;
+    psz = szVal;
+    if (    *psz == '0'
+        &&  (psz[1] == 'x' || psz[1] == 'X'))
+    {
+        uBase = 16;
+        psz += 2;
+    }
+
+    /* convert it up to the first unknown char. */
+    cb = 0;
+    for(;;)
+    {
+        const char ch = *psz;
+        unsigned uDigit;
+        if (!ch)
+            break;
+        else if (ch >= '0' && ch <= '9')
+            uDigit = ch - '0';
+        else if (ch >= 'a' && ch <= 'z')
+            uDigit = ch - 'a' + 10;
+        else if (ch >= 'A' && ch <= 'Z')
+            uDigit = ch - 'A' + 10;
+        else
+            break;
+        if (uDigit >= uBase)
+            break;
+
+        /* add the digit */
+        cb *= uBase;
+        cb += uDigit;
+
+        psz++;
+    }
+
+    /* check for unit */
+    if (*psz == 'm' || *psz == 'M')
+        cb *= 1024*1024;
+    else if (*psz == 'k' ||*psz == 'K')
+        cb *= 1024;
+    else if (*psz == 'g' || *psz == 'G')
+        cb *= 1024*1024*1024;
+
+    *pcb = cb;
+    return 0;
+}
+
+