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++)
34 str += (char)nibble2hex_byte (*byte_C >> 4);
35 str += (char)nibble2hex_byte (*byte_C++);
41 String_convert::bin2_i (String bin_str)
43 assert (bin_str.length_i() <= 4);
46 for ( int i = 0; i < bin_str.length_i(); i++)
49 result_i += (Byte)bin_str[ i ];
54 // breendet imp from String
56 String_convert::dec2_i (String dec_str)
58 if ( !dec_str.length_i())
62 int conv = sscanf (dec_str.ch_C(), "%ld", &l);
69 String_convert::i64_str (I64 i64, char const* fmt)
71 char buffer[STRING_BUFFER_LEN];
72 snprintf (buffer, STRING_BUFFER_LEN,
73 (fmt ? fmt : "%Ld"), i64); // assume radix 10
74 return String (buffer);
77 // breendet imp from String
79 String_convert::dec2_f (String dec_str)
81 if ( !dec_str.length_i())
84 int conv = sscanf (dec_str.ch_C(), "%lf", &d);
90 String_convert::hex2bin_i (String hex_str, String& bin_str_r)
92 if ( hex_str.length_i() % 2)
93 hex_str = "0" + hex_str;
96 Byte const* byte_C= hex_str.byte_C();
98 while ( i < hex_str.length_i())
100 int high_i = hex2nibble_i (*byte_C++);
101 int low_i = hex2nibble_i (*byte_C++);
102 if ( high_i < 0 || low_i < 0)
103 return 1; // illegal char
104 bin_str_r += String ((char)( high_i << 4 | low_i), 1 );
111 String_convert::hex2bin_str (String hex_str)
114 // silly, asserts should alway be "on"!
115 // assert (!hex2bin_i (hex_str, str) );
116 int error_i = hex2bin_i (hex_str, str);
122 String_convert::hex2nibble_i (Byte byte)
124 if ( byte >= '0' && byte <= '9')
126 if ( byte >= 'A' && byte <= 'F')
127 return byte - 'A' + 10;
128 if ( byte >= 'a' && byte <= 'f')
129 return byte - 'a' + 10;
133 // stupido. Should use int_str()
135 String_convert::i2dec_str (int i, int length_i, char ch)
145 return String (fill_ch, length_i - dec_str.length_i()) + dec_str;
149 // stupido. Should use int_str()
151 String_convert::u2hex_str (unsigned u, int length_i, char fill_ch)
160 str = String ((char)( ( u % 16)["0123456789abcdef"] ) ) + str;
164 str += int_str (u, "%x"); // hmm. %lx vs. %x -> portability?
167 str = String (fill_ch, length_i - str.length_i()) + str;
168 while ( ( str.length_i() > length_i) && ( str[ 0 ] == 'f' ) )
169 str = str.mid_str (2, INT_MAX);
175 String_convert::i2hex_str (int i, int length_i, char fill_ch)
177 return u2hex_str ((unsigned)i, length_i, fill_ch);
181 String_convert::nibble2hex_byte (Byte byte)
183 if ( ( byte & 0x0f) <= 9 )
184 return ( byte & 0x0f) + '0';
186 return ( byte & 0x0f) - 10 + 'a';
189 Convert an integer to a string
192 #fmt# is a printf style format, default assumes "%d" as format.
195 String_convert::int_str (int i, char const* fmt)
197 char buffer[STRING_BUFFER_LEN];
198 snprintf (buffer, STRING_BUFFER_LEN,
199 (fmt ? fmt : "%d"), i); // assume radix 10
200 return String (buffer);
204 Convert a double to a string.
206 @param #fmt# is a printf style format, default assumes "%lf" as format
209 String_convert::double_str (double f, char const* fmt)
211 char buf[STRING_BUFFER_LEN];
213 snprintf (buf, STRING_BUFFER_LEN, fmt ? fmt : "%f", f);
218 Make a string from a single character.
221 #n# is a repetition count, default value is 1
224 String_convert::char_str (char c, int n)
227 char* ch_p = new char[ n ];
229 String s ((Byte*)ch_p, n);
235 String_convert::rational_str (Rational r)
237 char * n = Itoa (r.numerator()); // LEAK????
240 if (r.denominator() != 1)
242 char * d = Itoa (r.denominator());
243 s += String ('/') + String (d);
252 String_convert::pointer_str (void const *l)
254 char buffer[STRING_BUFFER_LEN];
255 snprintf (buffer, STRING_BUFFER_LEN, "%p", l); // assume radix 10
256 return String (buffer);