Diff: http/server/HttpString.cpp

Revision:

0:400d8e75a8d0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/http/server/HttpString.cpp	Sun Sep 06 15:19:36 2015 +0000
@@ -0,0 +1,201 @@
+//*****************************************************************************
+// Copyright (C) 2014 Texas Instruments Incorporated
+//
+// All rights reserved. Property of Texas Instruments Incorporated.
+// Restricted rights to use, duplicate or disclose this code are
+// granted through contract.
+// The program may not be used without the written permission of
+// Texas Instruments Incorporated or against the terms and conditions
+// stipulated in the agreement under which this program has been supplied,
+// and under no circumstances can it be used with non-TI connectivity device.
+//
+//*****************************************************************************
+
+#include "string.h"
+#include <stdlib.h>
+#include "HttpString.h"
+#include "HttpDebug.h"
+//#include "HttpCore.h"
+
+/**
+ * @addtogroup HttpString
+ * @{
+ */
+
+char digits[] = "0123456789";
+char hexDigits[] = "0123456789abcdef";
+
+int HttpString_strcmp(struct HttpBlob first, struct HttpBlob second)
+{
+    int min,res;
+    if (first.uLength > second.uLength)
+        min = second.uLength;
+    else
+        min = first.uLength;
+
+    // Compare a common length which might be equal
+    res = memcmp(first.pData, second.pData, min);
+    if (res != 0)
+        return res;
+
+    // Common length is equal, so the longer blob is "larger"
+    if (first.uLength > second.uLength)
+        return 1;
+    else if (first.uLength < second.uLength)
+        return -1;
+    else
+        return 0;
+}
+
+static void ToLower(char * str, UINT16 len)
+{
+    int i;
+    for (i=0 ; i<=len; i++)
+    {
+        if (str[i]>='A' && str[i]<='Z')
+            str[i] = str[i] + 32;
+    }
+}
+
+UINT8* HttpString_nextToken(char* pToken, UINT16 uTokenLength, struct HttpBlob blob)
+{
+    UINT8* pch = blob.pData;
+    struct HttpBlob partialBlob;
+    struct HttpBlob token;
+    token.pData = (UINT8*)pToken;
+    token.uLength = uTokenLength;
+
+   	ToLower((char *)blob.pData, blob.uLength);
+
+    while (pch < blob.pData + blob.uLength)
+    {
+        // Calculate how many blob bytes we should search
+        int nMaxCount = blob.uLength - (pch - blob.pData) - uTokenLength + 1;
+        if (nMaxCount < 1){
+            return NULL;
+        }
+        // Search for the first character of the token
+        pch = (UINT8*)memchr(pch, pToken[0], nMaxCount);
+        if (pch==NULL){
+            return NULL;
+        }
+        // Found first character, now compare the rest
+        partialBlob.pData = pch;
+        partialBlob.uLength = uTokenLength;
+        if (HttpString_strcmp(token, partialBlob)==0)
+            return pch;
+
+        // Skip this byte, and look for the token in the rest of the blob
+        ++pch;
+    }
+    return NULL;
+}
+
+UINT8* HttpString_nextDelimiter(char* pToken, UINT16 uTokenLength, struct HttpBlob blob)
+{
+    UINT8* pch = blob.pData;
+    struct HttpBlob partialBlob;
+    struct HttpBlob token;
+    token.pData = (UINT8*)pToken;
+    token.uLength = uTokenLength;
+
+   	//ToLower((char *)blob.pData, blob.uLength);
+
+    while (pch < blob.pData + blob.uLength)
+    {
+        // Calculate how many blob bytes we should search
+        int nMaxCount = blob.uLength - (pch - blob.pData) - uTokenLength + 1;
+        if (nMaxCount < 1)
+            return NULL;
+
+        // Search for the first character of the token
+        pch = (UINT8*)memchr(pch, pToken[0], nMaxCount);
+        if (pch==NULL)
+            return NULL;
+
+        // Found first character, now compare the rest
+        partialBlob.pData = pch;
+        partialBlob.uLength = uTokenLength;
+        if (HttpString_strcmp(token, partialBlob)==0)
+            return pch;
+
+        // Skip this byte, and look for the token in the rest of the blob
+        ++pch;
+    }
+    return NULL;
+}
+
+UINT32 HttpString_atou(struct HttpBlob string)
+{
+    return atoi((const char*)string.pData);
+}
+
+void HttpString_utoa(UINT32 uNum, struct HttpBlob* pString)
+{
+    char* ptr;
+    UINT32 uTemp = uNum;
+
+    // value 0 is a special format
+    if (uNum == 0)
+    {
+        pString->uLength = 1;
+        *pString->pData = '0';
+        return;
+    }
+
+    // Find out the length of the number, in decimal base
+    pString->uLength = 0;
+    while (uTemp > 0)
+    {
+        uTemp /= 10;
+        pString->uLength++;
+    }
+
+    // Do the actual formatting, right to left
+    uTemp = uNum;
+    ptr = (char*)pString->pData + pString->uLength;
+    while (uTemp > 0)
+    {
+        --ptr;
+        *ptr = digits[uTemp % 10];
+        uTemp /= 10;
+    }
+}
+
+void HttpString_htoa(UINT32 uNum, struct HttpBlob* pString, UINT8 bPadZero)
+{
+    UINT8* ptr;
+    UINT32 uTemp = uNum;
+
+    if (!bPadZero)
+    {
+        // value 0 is a special format
+        if (uNum == 0)
+        {
+            pString->uLength = 1;
+            *pString->pData = '0';
+            return;
+        }
+
+        // Find out the length of the number, in hexadecimal base
+        pString->uLength = 0;
+        while (uTemp > 0)
+        {
+            uTemp /= 16;
+            pString->uLength++;
+        }
+    }
+
+    // Do the actual formatting, right to left
+    uTemp = uNum;
+    ptr = pString->pData + pString->uLength;
+    while (ptr > pString->pData)
+    {
+        --ptr;
+        *ptr = (UINT8)hexDigits[uTemp % 16];
+        uTemp /= 16;
+    }
+}
+
+/// @}
+