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Diffstat (limited to 'src/tool_convert.c')
| -rw-r--r-- | src/tool_convert.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/tool_convert.c b/src/tool_convert.c new file mode 100644 index 000000000..e72a091b6 --- /dev/null +++ b/src/tool_convert.c @@ -0,0 +1,152 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at http://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ +#include "setup.h" + +#ifdef CURL_DOES_CONVERSIONS + +#ifdef HAVE_ICONV +# include <iconv.h> +#endif + +#include <curl/curl.h> + +#include "tool_convert.h" + +#include "memdebug.h" /* keep this as LAST include */ + +#ifdef HAVE_ICONV + +/* curl tool iconv conversion descriptors */ +static iconv_t inbound_cd = (iconv_t)-1; +static iconv_t outbound_cd = (iconv_t)-1; + +/* set default codesets for iconv */ +#ifndef CURL_ICONV_CODESET_OF_NETWORK +# define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1" +#endif + +/* + * convert_to_network() is a curl tool function to convert + * from the host encoding to ASCII on non-ASCII platforms. + */ +CURLcode convert_to_network(char *buffer, size_t length) +{ + /* translate from the host encoding to the network encoding */ + char *input_ptr, *output_ptr; + size_t res, in_bytes, out_bytes; + + /* open an iconv conversion descriptor if necessary */ + if(outbound_cd == (iconv_t)-1) { + outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK, + CURL_ICONV_CODESET_OF_HOST); + if(outbound_cd == (iconv_t)-1) { + return CURLE_CONV_FAILED; + } + } + /* call iconv */ + input_ptr = output_ptr = buffer; + in_bytes = out_bytes = length; + res = iconv(outbound_cd, &input_ptr, &in_bytes, + &output_ptr, &out_bytes); + if((res == (size_t)-1) || (in_bytes != 0)) { + return CURLE_CONV_FAILED; + } + + return CURLE_OK; +} + +/* + * convert_from_network() is a curl tool function + * for performing ASCII conversions on non-ASCII platforms. + */ +CURLcode convert_from_network(char *buffer, size_t length) +{ + /* translate from the network encoding to the host encoding */ + char *input_ptr, *output_ptr; + size_t res, in_bytes, out_bytes; + + /* open an iconv conversion descriptor if necessary */ + if(inbound_cd == (iconv_t)-1) { + inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_OF_NETWORK); + if(inbound_cd == (iconv_t)-1) { + return CURLE_CONV_FAILED; + } + } + /* call iconv */ + input_ptr = output_ptr = buffer; + in_bytes = out_bytes = length; + res = iconv(inbound_cd, &input_ptr, &in_bytes, + &output_ptr, &out_bytes); + if((res == (size_t)-1) || (in_bytes != 0)) { + return CURLE_CONV_FAILED; + } + + return CURLE_OK; +} + +void convert_cleanup(void) +{ + /* close iconv conversion descriptors */ + if(inbound_cd != (iconv_t)-1) + (void)iconv_close(inbound_cd); + if(outbound_cd != (iconv_t)-1) + (void)iconv_close(outbound_cd); +} + +#endif /* HAVE_ICONV */ + +char convert_char(curl_infotype infotype, char this_char) +{ +/* determine how this specific character should be displayed */ + switch(infotype) { + case CURLINFO_DATA_IN: + case CURLINFO_DATA_OUT: + case CURLINFO_SSL_DATA_IN: + case CURLINFO_SSL_DATA_OUT: + /* data, treat as ASCII */ + if((this_char >= 0x20) && (this_char < 0x7f)) { + /* printable ASCII hex value: convert to host encoding */ + (void)convert_from_network(&this_char, 1); + } + else { + /* non-printable ASCII, use a replacement character */ + return UNPRINTABLE_CHAR; + } + /* fall through to default */ + default: + /* treat as host encoding */ + if(ISPRINT(this_char) + && (this_char != '\t') + && (this_char != '\r') + && (this_char != '\n')) { + /* printable characters excluding tabs and line end characters */ + return this_char; + } + break; + } + /* non-printable, use a replacement character */ + return UNPRINTABLE_CHAR; +} + +#endif /* CURL_DOES_CONVERSIONS */ + |