2 PROJECT: FlowerSoft C++ library
3 FILE : string-convert.cc
10 #include "libc-extension.hh"
12 #include "string-convert.hh"
15 a safe length for stringconversion buffers
17 worst case would be %f printing HUGE (or 1/HUGE), which is approx
18 2e318, this number would have approx 318 zero's in its string.
20 Should enlarge buff dynamically.
25 static const int STRING_BUFFER_LEN=1024;
28 String_convert::bin2hex_str( String bin_str )
31 Byte const* byte_C = bin_str.byte_C();
32 for ( int i = 0; i < bin_str.length_i(); i++ ) {
33 str += (char)nibble2hex_byte( *byte_C >> 4 );
34 str += (char)nibble2hex_byte( *byte_C++ );
40 String_convert::bin2_i( String bin_str )
42 assert( bin_str.length_i() <= 4 );
45 for ( int i = 0; i < bin_str.length_i(); i++ ) {
47 result_i += (Byte)bin_str[ i ];
52 // breendet imp from String
54 String_convert::dec2_i( String dec_str )
56 if ( !dec_str.length_i() )
60 int conv = sscanf( dec_str.ch_C(), "%ld", &l );
67 String_convert::i64_str( I64 i64, char const* fmt)
69 char buffer[STRING_BUFFER_LEN];
70 snprintf(buffer, STRING_BUFFER_LEN,
71 (fmt ? fmt : "%Ld"), i64 ); // assume radix 10
72 return String(buffer);
75 // breendet imp from String
77 String_convert::dec2_f( String dec_str )
79 if ( !dec_str.length_i() )
82 int conv = sscanf( dec_str.ch_C(), "%lf", &d );
88 String_convert::hex2bin_i( String hex_str, String& bin_str_r )
90 if ( hex_str.length_i() % 2 )
91 hex_str = "0" + hex_str;
94 Byte const* byte_C= hex_str.byte_C();
96 while ( i < hex_str.length_i() ) {
97 int high_i = hex2nibble_i( *byte_C++ );
98 int low_i = hex2nibble_i( *byte_C++ );
99 if ( high_i < 0 || low_i < 0 )
100 return 1; // illegal char
101 bin_str_r += String( (char)( high_i << 4 | low_i ), 1 );
108 String_convert::hex2bin_str( String hex_str )
111 // silly, asserts should alway be "on"!
112 // assert( !hex2bin_i( hex_str, str ) );
113 int error_i = hex2bin_i( hex_str, str );
119 String_convert::hex2nibble_i( Byte byte )
121 if ( byte >= '0' && byte <= '9' )
123 if ( byte >= 'A' && byte <= 'F' )
124 return byte - 'A' + 10;
125 if ( byte >= 'a' && byte <= 'f')
126 return byte - 'a' + 10;
130 // stupido. Should use int_str()
132 String_convert::i2dec_str( int i, int length_i, char ch )
142 return String( fill_ch, length_i - dec_str.length_i() ) + dec_str;
146 // stupido. Should use int_str()
148 String_convert::u2hex_str( unsigned u, int length_i, char fill_ch )
156 str = String( (char)( ( u % 16 )["0123456789abcdef"] ) ) + str;
160 str += int_str( u, "%x" ); // hmm. %lx vs. %x -> portability?
163 str = String( fill_ch, length_i - str.length_i() ) + str;
164 while ( ( str.length_i() > length_i ) && ( str[ 0 ] == 'f' ) )
165 str = str.mid_str( 2, INT_MAX );
171 String_convert::i2hex_str( int i, int length_i, char fill_ch )
173 return u2hex_str( (unsigned)i, length_i, fill_ch );
177 String_convert::nibble2hex_byte( Byte byte )
179 if ( ( byte & 0x0f ) <= 9 )
180 return ( byte & 0x0f ) + '0';
182 return ( byte & 0x0f ) - 10 + 'a';
185 Convert an integer to a string
188 #fmt# is a printf style format, default assumes "%d" as format.
191 String_convert::int_str(int i, char const* fmt)
193 char buffer[STRING_BUFFER_LEN];
194 snprintf(buffer, STRING_BUFFER_LEN,
195 (fmt ? fmt : "%d"), i ); // assume radix 10
196 return String(buffer);
200 Convert a double to a string.
202 @param #fmt# is a printf style format, default assumes "%lf" as format
205 String_convert::double_str(double f, char const* fmt)
207 char buf[STRING_BUFFER_LEN];
209 snprintf(buf, STRING_BUFFER_LEN, fmt ? fmt : "%f", f);
214 Make a string from a single character.
217 #n# is a repetition count, default value is 1
220 String_convert::char_str(char c, int n)
223 char* ch_p = new char[ n ];
224 memset( ch_p, c, n );
225 String s((Byte*)ch_p, n);
231 String_convert::rational_str(Rational r)
233 char * n = Itoa(r.numerator()); // LEAK????
236 if (r.denominator() != 1) {
237 char * d = Itoa(r.denominator());
238 s += String( '/' ) + String(d);
247 String_convert::pointer_str(void const *l)
250 return String_convert::i64_str(i64, "0x%0Lx");