84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/*
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* fopen.h
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*
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* adapted from https://curl.haxx.se/libcurl/c/fopen.html.
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*
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*
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* Modifications to read/write wide character streams by
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* Simon Brooke.
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*
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* NOTE THAT: for my purposes, I'm only interested in wide characters,
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* and I always read them one character at a time.
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*
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* Copyright (c) 2003, 2017 Simtec Electronics
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* Some portions (c) 2019 Simon Brooke <simon@journeyman.cc>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This example requires libcurl 7.9.7 or later.
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*/
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#ifndef __fopen_h
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#define __fopen_h
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#include <curl/curl.h>
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/*
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* wide characters
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*/
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#include <wchar.h>
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#include <wctype.h>
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#define url_fwprintf(f, ...) ((f->type = CFTYPE_FILE) ? fwprintf( f->handle.file, __VA_ARGS__) : -1)
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#define url_fputws(ws, f) ((f->type = CFTYPE_FILE) ? fputws(ws, f->handle.file) : 0)
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#define url_fputwc(wc, f) ((f->type = CFTYPE_FILE) ? fputwc(wc, f->handle.file) : 0)
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enum fcurl_type_e {
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CFTYPE_NONE = 0,
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CFTYPE_FILE = 1,
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CFTYPE_CURL = 2
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};
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struct fcurl_data {
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enum fcurl_type_e type; /* type of handle */
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union {
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CURL *curl;
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FILE *file;
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} handle; /* handle */
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char *buffer; /* buffer to store cached data */
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size_t buffer_len; /* currently allocated buffer's length */
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size_t buffer_pos; /* cursor into in buffer */
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int still_running; /* Is background url fetch still in progress */
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};
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typedef struct fcurl_data URL_FILE;
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/* exported functions */
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URL_FILE *url_fopen( const char *url, const char *operation );
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int url_fclose( URL_FILE * file );
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int url_feof( URL_FILE * file );
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size_t url_fread( void *ptr, size_t size, size_t nmemb, URL_FILE * file );
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char *url_fgets( char *ptr, size_t size, URL_FILE * file );
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void url_rewind( URL_FILE * file );
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#endif
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