response.c

一个很好用的解析

                    abyss_bool addedToExt;
                    
                    addedToExt = ListAdd(&MIMETypeP->extList, extItem);
                    *successP = addedToExt;
                    if (!*successP)
                        ListRemove(&MIMETypeP->typeList);
                } else
                    *successP = FALSE;
                if (!*successP)
                    PoolReturn(&MIMETypeP->pool, extItem);
            } else
                *successP = FALSE;
        }
    } else
        *successP = FALSE;
}




abyss_bool
MIMETypeAdd2(MIMEType *   const MIMETypeArg,
             const char * const type,
             const char * const ext) {

    MIMEType * MIMETypeP = MIMETypeArg ? MIMETypeArg : globalMimeTypeP;

    abyss_bool success;

    if (MIMETypeP == NULL)
        success = FALSE;
    else 
        mimeTypeAdd(MIMETypeP, type, ext, &success);

    return success;
}



abyss_bool
MIMETypeAdd(const char * const type,
            const char * const ext) {

    return MIMETypeAdd2(globalMimeTypeP, type, ext);
}



static const char *
mimeTypeFromExt(MIMEType *   const MIMETypeP,
                const char * const ext) {

    const char * retval;
    uint16_t extindex;
    abyss_bool extIsInList;

    assert(MIMETypeP != NULL);

    extIsInList = ListFindString(&MIMETypeP->extList, ext, &extindex);
    if (!extIsInList)
        retval = NULL;
    else
        retval = MIMETypeP->typeList.item[extindex];
    
    return retval;
}



const char *
MIMETypeFromExt2(MIMEType *   const MIMETypeArg,
                 const char * const ext) {

    const char * retval;

    MIMEType * MIMETypeP = MIMETypeArg ? MIMETypeArg : globalMimeTypeP;

    if (MIMETypeP == NULL)
        retval = NULL;
    else
        retval = mimeTypeFromExt(MIMETypeP, ext);

    return retval;
}



const char *
MIMETypeFromExt(const char * const ext) {

    return MIMETypeFromExt2(globalMimeTypeP, ext);
}



static void
findExtension(const char *  const fileName,
              const char ** const extP) {

    unsigned int extPos = 0;  /* stifle unset variable warning */
        /* Running estimation of where in fileName[] the extension starts */
    abyss_bool extFound;
    unsigned int i;

    /* We're looking for the last dot after the last slash */
    for (i = 0, extFound = FALSE; fileName[i]; ++i) {
        char const c = fileName[i];
        
        if (c == '.') {
            extFound = TRUE;
            extPos = i + 1;
        }
        if (c == '/')
            extFound = FALSE;
    }

    if (extFound)
        *extP = &fileName[extPos];
    else
        *extP = NULL;
}



static const char *
mimeTypeFromFileName(MIMEType *   const MIMETypeP,
                     const char * const fileName) {

    const char * retval;
    const char * ext;

    assert(MIMETypeP != NULL);
    
    findExtension(fileName, &ext);

    if (ext)
        retval = MIMETypeFromExt2(MIMETypeP, ext);
    else
        retval = "application/octet-stream";

    return retval;
}



const char *
MIMETypeFromFileName2(MIMEType *   const MIMETypeArg,
                      const char * const fileName) {

    const char * retval;
    
    MIMEType * MIMETypeP = MIMETypeArg ? MIMETypeArg : globalMimeTypeP;

    if (MIMETypeP == NULL)
        retval = NULL;
    else
        retval = mimeTypeFromFileName(MIMETypeP, fileName);

    return retval;
}



const char *
MIMETypeFromFileName(const char * const fileName) {

    return MIMETypeFromFileName2(globalMimeTypeP, fileName);
}



static abyss_bool
fileContainsText(const char * const fileName) {
/*----------------------------------------------------------------------------
   Return true iff we can read the contents of the file named 'fileName'
   and see that it appears to be composed of plain text characters.
-----------------------------------------------------------------------------*/
    abyss_bool retval;
    abyss_bool fileOpened;
    TFile file;

    fileOpened = FileOpen(&file, fileName, O_BINARY | O_RDONLY);
    if (fileOpened) {
        char const ctlZ = 26;
        unsigned char buffer[80];
        int32_t readRc;
        unsigned int i;

        readRc = FileRead(&file, buffer, sizeof(buffer));
       
        if (readRc >= 0) {
            unsigned int bytesRead = readRc;
            abyss_bool nonTextFound;

            nonTextFound = FALSE;  /* initial value */
    
            for (i = 0; i < bytesRead; ++i) {
                char const c = buffer[i];
                if (c < ' ' && !isspace(c) && c != ctlZ)
                    nonTextFound = TRUE;
            }
            retval = !nonTextFound;
        } else
            retval = FALSE;
        FileClose(&file);
    } else
        retval = FALSE;

    return retval;
}


 
static const char *
mimeTypeGuessFromFile(MIMEType *   const MIMETypeP,
                      const char * const fileName) {

    const char * retval;
    const char * ext;

    findExtension(fileName, &ext);

    retval = NULL;

    if (ext && MIMETypeP)
        retval = MIMETypeFromExt2(MIMETypeP, ext);
    
    if (!retval) {
        if (fileContainsText(fileName))
            retval = "text/plain";
        else
            retval = "application/octet-stream";  
    }
    return retval;
}



const char *
MIMETypeGuessFromFile2(MIMEType *   const MIMETypeArg,
                       const char * const fileName) {

    return mimeTypeGuessFromFile(MIMETypeArg ? MIMETypeArg : globalMimeTypeP,
                                 fileName);
}



const char *
MIMETypeGuessFromFile(const char * const fileName) {

    return mimeTypeGuessFromFile(globalMimeTypeP, fileName);
}

                                  

/*********************************************************************
** Base64
*********************************************************************/

void Base64Encode(char *s,char *d)
{
    /* Conversion table. */
    static char tbl[64] = {
        'A','B','C','D','E','F','G','H',
        'I','J','K','L','M','N','O','P',
        'Q','R','S','T','U','V','W','X',
        'Y','Z','a','b','c','d','e','f',
        'g','h','i','j','k','l','m','n',
        'o','p','q','r','s','t','u','v',
        'w','x','y','z','0','1','2','3',
        '4','5','6','7','8','9','+','/'
    };

    uint32_t i,length=strlen(s);
    char *p=d;
    
    /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
    for (i = 0; i < length; i += 3)
    {
        *p++ = tbl[s[0] >> 2];
        *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
        *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
        *p++ = tbl[s[2] & 0x3f];
        s += 3;
    }
    
    /* Pad the result if necessary... */
    if (i == length + 1)
        *(p - 1) = '=';
    else if (i == length + 2)
        *(p - 1) = *(p - 2) = '=';
    
    /* ...and zero-terminate it. */
    *p = '\0';
}

/******************************************************************************
**
** http.c
**
** Copyright (C) 2000 by Moez Mahfoudh <[e-mail]>.
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
** 
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
**
******************************************************************************/