PROJECT: FlowerSoft C++ library
FILE : string-convert.cc
---*/
+ --*/
+#include "string-convert.hh"
+
+#include <cstring>
+#include <cstdio>
+using namespace std;
-#include <assert.h>
-#include <limits.h>
#include "libc-extension.hh"
-#include "string.hh"
-#include "string-convert.hh"
+#include "rational.hh"
+#include "std-vector.hh"
/**
- a safe length for stringconversion buffers
+ A safe length for stringconversion buffers.
worst case would be %f printing HUGE (or 1/HUGE), which is approx
2e318, this number would have approx 318 zero's in its string.
Should enlarge buff dynamically.
-
+
@see
man 3 snprintf
- */
-static const int STRING_BUFFER_LEN=1024;
+*/
+static const int STRING_BUFFER_LEN = 1024;
-String
-String_convert::bin2hex_str (String bin_str)
+string
+String_convert::bool_string (bool b)
{
- String str;
- Byte const* byte_C = bin_str.byte_C();
- for ( int i = 0; i < bin_str.length_i(); i++)
+ return string (b ? "true" : "false");
+}
+
+string
+String_convert::bin2hex (Byte bin_char)
+{
+ string str;
+ str += ::to_string ((char) nibble2hex_byte ((Byte) (bin_char >> 4)));
+ str += ::to_string ((char) nibble2hex_byte (bin_char++));
+ return str;
+}
+
+string
+String_convert::bin2hex (const string &bin_string)
+{
+ string str;
+ Byte const *byte = (Byte const *)bin_string.data ();
+ for (ssize i = 0; i < bin_string.length (); i++)
{
- str += (char)nibble2hex_byte (*byte_C >> 4);
- str += (char)nibble2hex_byte (*byte_C++);
+ str += ::to_string ((char)nibble2hex_byte ((Byte) (*byte >> 4)));
+ str += ::to_string ((char)nibble2hex_byte (*byte++));
}
return str;
}
int
-String_convert::bin2_i (String bin_str)
+String_convert::bin2int (const string &bin_string)
+{
+ return bin2unsigned (bin_string);
+}
+
+unsigned
+String_convert::bin2unsigned (const string &bin_string)
{
- assert (bin_str.length_i() <= 4);
+ assert (bin_string.length () <= (int)sizeof (unsigned));
- int result_i = 0;
- for ( int i = 0; i < bin_str.length_i(); i++)
+ unsigned result_u = 0;
+ for (ssize i = 0; i < bin_string.length (); i++)
{
- result_i <<= 8;
- result_i += (Byte)bin_str[ i ];
+ result_u <<= 8;
+ result_u += (Byte)bin_string[ i ];
}
- return result_i;
+ return result_u;
}
-// breendet imp from String
int
-String_convert::dec2_i (String dec_str)
+String_convert::dec2int (const string &dec_string)
{
- if ( !dec_str.length_i())
- return 0;
+ if (!dec_string.length ())
+ return 0;
long l = 0;
- int conv = sscanf (dec_str.ch_C(), "%ld", &l);
- assert (conv);
+ if (!sscanf (dec_string.c_str (), "%ld", &l))
+ assert (false);
return (int)l;
}
-String
-String_convert::i64_str (I64 i64, char const* fmt)
+string
+String_convert::i64_string (I64 i64, char const *fmt)
{
char buffer[STRING_BUFFER_LEN];
snprintf (buffer, STRING_BUFFER_LEN,
- (fmt ? fmt : "%Ld"), i64); // assume radix 10
- return String (buffer);
-
+ (fmt ? fmt : "%Ld"), i64); // assume radix 10
+ return string (buffer);
}
-// breendet imp from String
+// breendet imp from string
double
-String_convert::dec2_f (String dec_str)
+String_convert::dec2double (const string &dec_string)
{
- if ( !dec_str.length_i())
- return 0;
- double d = 0;
- int conv = sscanf (dec_str.ch_C(), "%lf", &d);
- assert (conv);
+ if (!dec_string.length ())
+ return 0;
+
+ double d = 0.0;
+ if (!sscanf (dec_string.c_str (), "%lf", &d))
+ assert (false);
+
return d;
}
int
-String_convert::hex2bin_i (String hex_str, String& bin_str_r)
+String_convert::hex2bin (string hex_string, string &bin_string_r)
{
- if ( hex_str.length_i() % 2)
- hex_str = "0" + hex_str;
+ if (hex_string.length () % 2)
+ hex_string = "0" + hex_string;
- bin_str_r = "";
- Byte const* byte_C= hex_str.byte_C();
- int i = 0;
- while ( i < hex_str.length_i())
+ bin_string_r = "";
+ Byte const *byte = (Byte const *) hex_string.data ();
+ ssize i = 0;
+ while (i < hex_string.length ())
{
- int high_i = hex2nibble_i (*byte_C++);
- int low_i = hex2nibble_i (*byte_C++);
- if ( high_i < 0 || low_i < 0)
- return 1; // illegal char
- bin_str_r += String ((char)( high_i << 4 | low_i), 1 );
+ int high_i = hex2nibble (*byte++);
+ int low_i = hex2nibble (*byte++);
+ if (high_i < 0 || low_i < 0)
+ return 1; // invalid char
+ bin_string_r += ::to_string ((char) (high_i << 4 | low_i), 1);
i += 2;
}
return 0;
}
-String
-String_convert::hex2bin_str (String hex_str)
+string
+String_convert::hex2bin (const string &hex_string)
{
- String str;
-// silly, asserts should alway be "on"!
-// assert (!hex2bin_i (hex_str, str) );
- int error_i = hex2bin_i (hex_str, str);
- assert (!error_i);
+ string str;
+
+ if (hex2bin (hex_string, str))
+ assert (false);
+
return str;
}
-int
-String_convert::hex2nibble_i (Byte byte)
+int
+String_convert::hex2nibble (Byte byte)
{
- if ( byte >= '0' && byte <= '9')
- return byte - '0';
- if ( byte >= 'A' && byte <= 'F')
- return byte - 'A' + 10;
- if ( byte >= 'a' && byte <= 'f')
- return byte - 'a' + 10;
+ if (byte >= '0' && byte <= '9')
+ return byte - '0';
+ if (byte >= 'A' && byte <= 'F')
+ return byte - 'A' + 10;
+ if (byte >= 'a' && byte <= 'f')
+ return byte - 'a' + 10;
return -1;
}
-// stupido. Should use int_str()
-String
-String_convert::i2dec_str (int i, int length_i, char ch)
+// stupido. Should use int_string ()
+string
+String_convert::int2dec (int i, size_t length_i, char ch)
{
- char fill_ch = ch;
- if ( fill_ch)
- fill_ch = '0';
+ char fill_char = ch;
+ if (fill_char)
+ fill_char = '0';
// ugh
- String dec_str (i);
-
+ string dec_string = ::to_string (i);
+
// ugh
- return String (fill_ch, length_i - dec_str.length_i()) + dec_str;
+ return ::to_string (fill_char, ssize_t (length_i - dec_string.length ())) + dec_string;
}
-
-// stupido. Should use int_str()
-String
-String_convert::u2hex_str (unsigned u, int length_i, char fill_ch)
+// stupido. Should use int_string ()
+string
+String_convert::unsigned2hex (unsigned u, size_t length, char fill_char)
{
- String str;
- if ( !u)
- str = "0";
+ string str;
+ if (!u)
+ str = "0";
#if 1 // both go...
- while ( u)
+ while (u)
{
- str = String ((char)( ( u % 16)["0123456789abcdef"] ) ) + str;
- u /= 16;
+ str = ::to_string ((char) ((u % 16)["0123456789abcdef"])) + str;
+ u /= 16;
}
#else
- str += int_str (u, "%x"); // hmm. %lx vs. %x -> portability?
+ str += int_string (u, "%x"); // hmm. %lx vs. %x -> portability?
#endif
- str = String (fill_ch, length_i - str.length_i()) + str;
- while ( ( str.length_i() > length_i) && ( str[ 0 ] == 'f' ) )
- str = str.mid_str (2, INT_MAX);
+ str = ::to_string (fill_char, ssize_t (length - str.length ())) + str;
+ while ((str.length () > length) && (str[ 0 ] == 'f'))
+ str = str.substr (2);
return str;
}
-String
-String_convert::i2hex_str (int i, int length_i, char fill_ch)
+string
+String_convert::int2hex (int i, size_t length_i, char fill_char)
{
- return u2hex_str ((unsigned)i, length_i, fill_ch);
+ return unsigned2hex ((unsigned)i, length_i, fill_char);
}
Byte
String_convert::nibble2hex_byte (Byte byte)
{
- if ( ( byte & 0x0f) <= 9 )
- return ( byte & 0x0f) + '0';
+ if ((byte & 0x0f) <= 9)
+ return (Byte) ((byte & 0x0f) + '0');
else
- return ( byte & 0x0f) - 10 + 'a';
+ return (Byte) ((byte & 0x0f) - 10 + 'a');
}
/**
- Convert an integer to a string
+ Convert an integer to a string
- @param
- #fmt# is a printf style format, default assumes "%d" as format.
- */
-String
-String_convert::int_str (int i, char const* fmt)
+ @param
+ #fmt# is a printf style format, default assumes "%d" as format.
+*/
+string
+String_convert::int_string (int i, char const *fmt)
{
char buffer[STRING_BUFFER_LEN];
snprintf (buffer, STRING_BUFFER_LEN,
- (fmt ? fmt : "%d"), i); // assume radix 10
- return String (buffer);
+ (fmt ? fmt : "%d"), i); // assume radix 10
+ return string (buffer);
+}
+
+string
+String_convert::form_string (char const *format, ...)
+{
+ va_list args;
+ va_start (args, format);
+ char buffer[STRING_BUFFER_LEN];
+ vsnprintf (buffer, STRING_BUFFER_LEN, format, args);
+ va_end (args);
+ return string (buffer);
+}
+
+string
+String_convert::vform_string (char const *format, va_list args)
+{
+ char buffer[STRING_BUFFER_LEN];
+ vsnprintf (buffer, STRING_BUFFER_LEN, format, args);
+ return string (buffer);
}
/**
- Convert a double to a string.
+ Convert a double to a string.
- @param #fmt# is a printf style format, default assumes "%lf" as format
- */
-String
-String_convert::double_str (double f, char const* fmt)
+ @param #fmt# is a printf style format, default assumes "%lf" as format
+*/
+string
+String_convert::double_string (double f, char const *fmt)
{
- char buf[STRING_BUFFER_LEN];
+ char buf[STRING_BUFFER_LEN];
snprintf (buf, STRING_BUFFER_LEN, fmt ? fmt : "%f", f);
- return String (buf);
+ return string (buf);
}
/**
- Make a string from a single character.
+ Make a string from a single character.
- @param
- #n# is a repetition count, default value is 1
- */
-String
-String_convert::char_str (char c, int n)
+ @param
+ #n# is a repetition count, default value is 1
+*/
+string
+String_convert::char_string (char c, int n)
{
n = n >= 0 ? n : 0;
- char* ch_p = new char[ n ];
- memset (ch_p, c, n);
- String s ((Byte*)ch_p, n);
- delete ch_p;
+ char *ch = new char[ n ];
+ memset (ch, c, n);
+ string s (ch, n);
+
+ delete[] ch;
return s;
}
-String
-String_convert::rational_str (Rational r)
+string
+String_convert::rational_string (Rational r)
{
- char * n = Itoa (r.numerator()); // LEAK????
-
- String s = n;
- if (r.denominator() != 1)
- {
- char * d = Itoa (r.denominator());
- s += String ('/') + String (d);
- //delete d;
- }
-/* delete n;
- */
- return s;
+ return r.to_string ();
}
-String
-String_convert::pointer_str (void const *l)
+string
+String_convert::pointer_string (void const *l)
{
char buffer[STRING_BUFFER_LEN];
- snprintf (buffer, STRING_BUFFER_LEN, "%p", l); // assume radix 10
- return String (buffer);
+ snprintf (buffer, STRING_BUFFER_LEN, "%p", l); // assume radix 10
+ return string (buffer);
+}
+
+/**
+ Convert a double to a string.
+
+ @param
+ #n# is the number of nonzero digits
+*/
+string
+String_convert::precision_string (double x, int n)
+{
+ string format = "%." + ::to_string (max (0, n - 1)) + "e";
+ string str = double_string (abs (x), format.c_str ());
+
+ int exp = dec2int (str.substr (str.length () - 3));
+ str = str.substr (0, str.length () - 4);
+
+ while (str[str.length () - 1] == '0')
+ str = str.substr (0, str.length () - 1);
+ if (str[str.length () - 1] == '.')
+ str = str.substr (0, str.length () - 1);
+
+ if (exp == 0)
+ return (sign (x) > 0 ? str : "-" + str);
+
+ str = str.substr (0, 1) + str.substr (2);
+ ssize dot = 1 + exp;
+ if (dot <= 0)
+ str = "0." + ::to_string ('0', -dot) + str;
+ else if (dot >= str.length ())
+ str += ::to_string ('0', dot - str.length ());
+ else if ((dot > 0) && (dot < str.length ()))
+ str = str.substr (0, dot) + "." + str.substr (dot);
+ else
+ assert (0);
+
+ return (sign (x) > 0 ? str : "-" + str);
+}
+
+string
+String_convert::long_string (long l)
+{
+ char s[STRING_BUFFER_LEN];
+ sprintf (s, "%ld", l);
+ return s;
+}
+
+string
+String_convert::unsigned_string (unsigned u)
+{
+ char s[STRING_BUFFER_LEN];
+ sprintf (s, "%u", u);
+ return s;
+}
+
+string
+String_convert::unsigned_long_string (unsigned long ul)
+{
+ char s[STRING_BUFFER_LEN];
+ sprintf (s, "%lu", ul);
+ return s;
+}
+
+string
+String_convert::pad_to (const string &s, size_t n)
+{
+ return s + string (max (int (n - s.length ()), 0), ' ');
+}
+
+string
+String_convert::to_upper (string s)
+{
+ return strnupr (const_cast<char*>(s.c_str ()), s.length ());
+}
+
+string
+String_convert::to_lower (string s)
+{
+ return strnlwr (const_cast<char*>(s.c_str ()), s.length ());
+}
+
+string
+String_convert::reverse (string s)
+{
+ return (char *) memrev ((unsigned char *)s.data (), s.length ());
}
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