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Annotation of libwww/Library/src/HTXParse.c, revision 2.1

2.1     ! frystyk     1: /*                                                                HTXParse.c
        !             2: **     EXTPARSE CLASS
        !             3: **
        !             4: **     (c) COPYRIGHT CERN 1994.
        !             5: **     Please first read the full copyright statement in the file COPYRIGH.
        !             6: **
        !             7: **  AUTHORS:
        !             8: **     HWL 23/8/94
        !             9: */
        !            10: 
        !            11: /* Library include files */
        !            12: #include "tcp.h"
        !            13: #include "HTUtils.h"
        !            14: #include "HTFormat.h"                  /* defines INPUT_BUFFER_SIZE */
        !            15: #include "HTXParse.h"                 /* defines HTStreamClass */
        !            16: #include "HTEPtoCl.h"               /* defines dummy routine for talking to client */
        !            17: 
        !            18: #if 0
        !            19: /*extern void  (*HTCallClient)(HTExtParseStruct *eps);*/
        !            20: #endif
        !            21: 
        !            22: extern CallClient HTCallClient;
        !            23: 
        !            24: struct _HTStream {
        !            25:        CONST HTStreamClass *   isa;
        !            26:        HTExtParseStruct *      eps;
        !            27: };
        !            28: 
        !            29: PRIVATE void HTExtParse_put_character ARGS2(HTStream *, me, char, c)
        !            30: {
        !            31:     while ((me->eps->used + 1) > me->eps->length) {
        !            32:        me->eps->length += INPUT_BUFFER_SIZE;
        !            33:     }
        !            34:     me->eps->buffer = (char *) realloc(me->eps->buffer, me->eps->length);
        !            35:     *(me->eps->buffer + me->eps->used) = c;
        !            36:     me->eps->used++;
        !            37: }
        !            38: 
        !            39: PRIVATE void HTExtParse_put_string ARGS2(HTStream *, me, CONST char*, s)
        !            40: {
        !            41:     int l = strlen(s);
        !            42: 
        !            43:     if (TRACE) fprintf(TDEST, "HTExtParse_put_string, %s\n",s);
        !            44: 
        !            45:     while ((me->eps->used + l) > me->eps->length) {
        !            46:        me->eps->length += INPUT_BUFFER_SIZE;
        !            47:     }
        !            48:     me->eps->buffer = (char *) realloc(me->eps->buffer, me->eps->length);
        !            49:     memcpy( (me->eps->buffer + me->eps->used), s, l); 
        !            50:     me->eps->used += l;
        !            51: }
        !            52: 
        !            53: PRIVATE void HTExtParse_write ARGS3(HTStream *, me, CONST char*, s, int, l)
        !            54: {
        !            55:     while ((me->eps->used + l) > me->eps->length) {
        !            56:        me->eps->length += INPUT_BUFFER_SIZE;
        !            57:     }
        !            58:     me->eps->buffer = (char *) realloc(me->eps->buffer, me->eps->length);
        !            59:     memcpy( (me->eps->buffer + me->eps->used), s, l); 
        !            60:     me->eps->used += l;
        !            61:     (*me->eps->call_client)(me->eps);         /* so that client can give status info */
        !            62:     
        !            63:     if (TRACE)
        !            64:        fprintf(TDEST, "HTExtParse_write, l=%d, used = %d\n",l,me->eps->used);
        !            65: }
        !            66: 
        !            67: 
        !            68: PRIVATE int HTExtParse_free ARGS1(HTStream *, me)
        !            69: {
        !            70:     if (TRACE) fprintf(TDEST, "HTExtParse_free\n");
        !            71:     me->eps->finished = YES;
        !            72:     (*me->eps->call_client)(me->eps);         /* client will free buffer */
        !            73:     free(me->eps);
        !            74:     free(me);
        !            75:     return 0;
        !            76: }
        !            77: 
        !            78: PRIVATE int HTExtParse_abort ARGS2(HTStream *, me, HTError, e)
        !            79: {
        !            80:     if (TRACE)
        !            81:        fprintf(TDEST, "HTExtParse_abort\n");
        !            82:     HTExtParse_free(me);                                 /* Henrik Nov 2 94 */
        !            83:     return EOF;
        !            84: }
        !            85: 
        !            86: 
        !            87: /*     ExtParse stream
        !            88: **     -----------------
        !            89: */
        !            90: 
        !            91: 
        !            92: PRIVATE CONST HTStreamClass HTExtParseClass =
        !            93: {              
        !            94:        "ExtParse",
        !            95:        HTExtParse_free,
        !            96:        HTExtParse_abort,
        !            97:        HTExtParse_put_character,
        !            98:        HTExtParse_put_string,
        !            99:        HTExtParse_write
        !           100: }; 
        !           101: 
        !           102: /*
        !           103: extern void SetBufferPt PARAMS((char * p, int l));
        !           104: extern void GiveReadStatus PARAMS((char * p, int l));
        !           105: */
        !           106: 
        !           107: PUBLIC HTStream* HTExtParse ARGS5(
        !           108:        HTRequest *,            request,
        !           109:        void *,                 param,
        !           110:        HTFormat,               input_format,
        !           111:        HTFormat,               output_format,
        !           112:        HTStream *,             output_stream)
        !           113: {
        !           114:     HTStream* me;
        !           115:   
        !           116:     if (TRACE) {
        !           117:        fprintf(TDEST, "HTExtConvert..");
        !           118:        if (input_format && input_format->name)
        !           119:             fprintf(TDEST, ".. input format is %s",input_format->name);
        !           120:        if (output_format && output_format->name)
        !           121:             fprintf(TDEST, ".. output format is %s",output_format->name);
        !           122:        fprintf(TDEST, "\n");
        !           123:     }
        !           124: 
        !           125:     me = (HTStream*)calloc(1, sizeof(*me));
        !           126:     if (me == NULL) outofmem(__FILE__, "HTExtConvert");
        !           127:     me->isa = &HTExtParseClass;
        !           128: 
        !           129:     me->eps = (HTExtParseStruct *) calloc(1, sizeof(HTExtParseStruct));
        !           130:     if (me->eps == NULL) outofmem(__FILE__, "HTExtConvert");
        !           131: 
        !           132:     me->eps->content_type = input_format->name;
        !           133:     me->eps->call_client = HTCallClient;
        !           134:     me->eps->buffer = (char *)calloc(INPUT_BUFFER_SIZE,1);
        !           135:     me->eps->used = 0;
        !           136:     me->eps->finished = NO;
        !           137:     me->eps->length = INPUT_BUFFER_SIZE;
        !           138:     me->eps->request = request;
        !           139:     return me;
        !           140: }