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Annotation of embedaddon/php/ext/xmlrpc/libxmlrpc/encodings.c, revision 1.1.1.2

1.1       misho       1: /*
                      2:   This file is part of libXMLRPC - a C library for xml-encoded function calls.
                      3: 
                      4:   Author: Dan Libby (dan@libby.com)
                      5:   Epinions.com may be contacted at feedback@epinions-inc.com
                      6: */
                      7: 
                      8: /*  
                      9:   Copyright 2000 Epinions, Inc. 
                     10: 
                     11:   Subject to the following 3 conditions, Epinions, Inc.  permits you, free 
                     12:   of charge, to (a) use, copy, distribute, modify, perform and display this 
                     13:   software and associated documentation files (the "Software"), and (b) 
                     14:   permit others to whom the Software is furnished to do so as well.  
                     15: 
                     16:   1) The above copyright notice and this permission notice shall be included 
                     17:   without modification in all copies or substantial portions of the 
                     18:   Software.  
                     19: 
                     20:   2) THE SOFTWARE IS PROVIDED "AS IS", WITHOUT ANY WARRANTY OR CONDITION OF 
                     21:   ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY 
                     22:   IMPLIED WARRANTIES OF ACCURACY, MERCHANTABILITY, FITNESS FOR A PARTICULAR 
                     23:   PURPOSE OR NONINFRINGEMENT.  
                     24: 
                     25:   3) IN NO EVENT SHALL EPINIONS, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, 
                     26:   SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOST PROFITS ARISING OUT 
                     27:   OF OR IN CONNECTION WITH THE SOFTWARE (HOWEVER ARISING, INCLUDING 
                     28:   NEGLIGENCE), EVEN IF EPINIONS, INC.  IS AWARE OF THE POSSIBILITY OF SUCH 
                     29:   DAMAGES.    
                     30: 
                     31: */
                     32: 
                     33: #ifdef HAVE_CONFIG_H
                     34: #include "config.h"
                     35: #endif
                     36: 
                     37: #ifndef PHP_WIN32
                     38: #include <php_config.h>
                     39: #else
                     40: #include <config.w32.h>
                     41: #include <stdlib.h>
                     42: #endif
                     43: 
1.1.1.2 ! misho      44: static const char rcsid[] = "#(@) $Id$";
1.1       misho      45: 
                     46: #include <errno.h>
                     47: 
                     48: #ifdef HAVE_GICONV_H
                     49: #include <giconv.h>
                     50: #else
                     51: #include <iconv.h>
                     52: #endif
                     53: 
                     54: #include "encodings.h"
                     55: 
                     56: #ifndef ICONV_CSNMAXLEN
                     57: #define ICONV_CSNMAXLEN 64
                     58: #endif
                     59: 
                     60: static char* convert(const char* src, int src_len, int *new_len, const char* from_enc, const char* to_enc) {
                     61:    char* outbuf = 0;
                     62: 
                     63:    if(src && src_len && from_enc && to_enc) {
                     64:       size_t outlenleft = src_len;
                     65:       size_t inlenleft = src_len;
                     66:       int outlen = src_len;
                     67:       iconv_t ic;
                     68:       char* out_ptr = 0;
                     69: 
                     70:       if(strlen(to_enc) >= ICONV_CSNMAXLEN || strlen(from_enc) >= ICONV_CSNMAXLEN) {
                     71:          return NULL;
                     72:       }
                     73:       ic = iconv_open(to_enc, from_enc);
                     74:       if(ic != (iconv_t)-1) {
                     75:          size_t st;
                     76:          outbuf = (char*)malloc(outlen + 1);
                     77: 
                     78:          if(outbuf) {
                     79:             out_ptr = (char*)outbuf;
                     80:             while(inlenleft) {
                     81:                st = iconv(ic, (char**)&src, &inlenleft, &out_ptr, &outlenleft);
                     82:                if(st == -1) {
                     83:                   if(errno == E2BIG) {
                     84:                      int diff = out_ptr - outbuf;
                     85:                      outlen += inlenleft;
                     86:                      outlenleft += inlenleft;
                     87:                      outbuf = (char*)realloc(outbuf, outlen + 1);
                     88:                      if(!outbuf) {
                     89:                         break;
                     90:                      }
                     91:                      out_ptr = outbuf + diff;
                     92:                   }
                     93:                   else {
                     94:                      free(outbuf);
                     95:                      outbuf = 0;
                     96:                      break;
                     97:                   }
                     98:                }
                     99:             }
                    100:          }
                    101:          iconv_close(ic);
                    102:       }
                    103:       outlen -= outlenleft;
                    104: 
                    105:       if(new_len) {
                    106:          *new_len = outbuf ? outlen : 0;
                    107:       }
                    108:       if(outbuf) {
                    109:          outbuf[outlen] = 0;
                    110:       }
                    111:    }
                    112:    return outbuf;
                    113: }
                    114: 
                    115: /* returns a new string that must be freed */
                    116: char* utf8_encode(const char *s, int len, int *newlen, const char* encoding)
                    117: {
                    118:    return convert(s, len, newlen, encoding, "UTF-8");
                    119: }
                    120: 
                    121: /* returns a new string, possibly decoded */
                    122: char* utf8_decode(const char *s, int len, int *newlen, const char* encoding)
                    123: {
                    124:    return convert(s, len, newlen, "UTF-8", encoding);
                    125: }
                    126: