string.cc - implement String
- (c) 1997 Han-Wen Nienhuys & Jan Nieuwenhuizen
+ (c) 1997--2000 Han-Wen Nienhuys & Jan Nieuwenhuizen
*/
+#ifndef _GNU_SOURCE // we want memmem
+#define _GNU_SOURCE
+#endif
+
#include <stdlib.h>
#include <stdio.h>
-
#include <assert.h>
#include <string.h>
+#include <stdarg.h>
+
+#include <iostream>
#include "string.hh"
#include "libc-extension.hh"
#include "string-convert.hh"
#ifdef STRING_DEBUG
-void* mymemmove( void* dest, void const* src, size_t n );
+void* mymemmove (void* dest, void const* src, size_t n);
#define memmove mymemmove
#endif
// return array, alloced with new.
Byte*
-String::copy_byte_p() const
+String::get_copy_byte () const
{
- Byte const* src = strh_.byte_C();
- Byte* dest = new Byte[strh_.length_i() + 1];
- memcpy( dest, src, strh_.length_i() + 1 );
- return dest;
+ Byte const* src = strh_.to_bytes ();
+ Byte* dest = new Byte[strh_.length () + 1];
+ memcpy (dest, src, strh_.length () + 1);
+ return dest;
}
-void
-String::print_on(ostream& os) const
+
+char*
+String::get_copy_str0 () const
{
- if (!strh_.is_binary_bo())
- os << ch_C();
- else
- for ( int i = 0; i < length_i(); i++ )
- os << (Byte)(*this)[ i ];
+ return (char*)get_copy_byte ();
}
+
\f
/*
copying, constructing.
*/
String&
-String::operator = (String const&source )
+String::operator = (String const&source)
{
- strh_ = source.strh_;
- return *this;
+ strh_ = source.strh_;
+ return *this;
}
-String::String(Rational r)
-{
- *this = String_convert::rational_str(r);
+String::String (Byte const* byte, int len_i)
+{
+ strh_.set (byte, len_i);
}
-String::String (double f, char const* fmt)
+/**
+ @see
+ String_convert::
+ */
+String
+to_string (char c, int n)
{
- *this= String_convert::double_str(f,fmt);
+ return String_convert::char_string (c, n);
}
-String::String( char c, int n )
+String
+to_string (double f, char const* format)
{
- *this = String_convert::char_str (c,n);
+ return String_convert::double_string (f, format);
}
-/**
- @see
- String_convert::int_str
- */
-String::String(int i, char const * format )
+String
+to_string (int i, char const * format)
{
- *this = String_convert::int_str(i,format);
+ return String_convert::int_string (i, format);
}
-String::String (bool b)
+String
+to_string (bool b)
{
- *this = (char const* ) (b ? "true" : "false");
+ return String_convert::bool_string (b);
}
-
-String::String( char const* source )
-{
- assert(source);
- strh_ = source;
+String
+to_string (long b)
+{
+ return String_convert::long_string (b);
}
-String::String( Byte const* byte_l, int length_i )
-{
- strh_.set( byte_l, length_i );
+String
+to_string (char const* format, ... )
+{
+ va_list args;
+ va_start (args, format);
+ String str = String_convert::vform_string (format, args);
+ va_end (args);
+ return str;
}
+
\f
void
-String::append(String s)
+String::append (String s)
{
- strh_.append( s.byte_C(), s.length_i() );
+ strh_.append (s.to_bytes (), s.length ());
}
void
-String::operator +=(String s)
+String::operator += (String s)
{
- append(s);
+ append (s);
}
void
-String::prepend(String s)
+String::prepend (String s)
{
- s += *this;
- *this = s;
+ s += *this;
+ *this = s;
}
int
-String::length_i() const
+String::length () const
{
- return strh_.length_i();
+ return strh_.length ();
}
Byte const*
-String::byte_C() const
+String::to_bytes () const
{
- return strh_.byte_C();
+ return strh_.to_bytes ();
}
char const*
-String::ch_C() const
+String::to_str0 () const
{
- return strh_.ch_C();
+ return strh_.to_str0 ();
}
Byte*
-String::byte_l()
+String::get_bytes ()
{
- return strh_.byte_l();
+ return strh_.get_bytes ();
}
char*
-String::ch_l()
+String::get_str0 ()
{
- return strh_.ch_l();
+ return strh_.get_str0 ();
}
+bool
+String::empty_b () const
+{
+ return !length ();
+}
/**
Do a signed comparison, analogous to memcmp;
*/
int
-String::compare_i(String const& s1, String const& s2 )
+String::compare (String const& s1, String const& s2)
{
- Byte const* p1 = s1.byte_C();
- Byte const* p2 = s2.byte_C();
- if ( p1 == p2 )
- return 0;
+ Byte const* p1 = s1.to_bytes ();
+ Byte const* p2 = s2.to_bytes ();
+ if (p1 == p2)
+ return 0;
- int i1 = s1.length_i();
- int i2 = s2.length_i();
-
- int result= memcmp( p1, p2, i1 <? i2 );
- return result ? result : i1-i2;
+ /*
+ don't forget the terminating '\0'
+ */
+ int f = (s1.length () <? s2.length ());
+ int cmp_length = 1+ f;
+ int i = memcmp (p1, p2, cmp_length);
+ return i;
}
\f
int
-String::index_last_i( char const c ) const
+String::index_last (char const c) const
{
- if ( !length_i() )
- return -1;
-
- char const* me = strh_.ch_C();
- char const* p = memrchr(me, length_i(), c );
- if ( p )
- return p - me;
+ if (!length ())
return -1;
+
+ char const* me = strh_.to_str0 ();
+ char const* p = (char const*)memrchr ((Byte*)me, length (), c);
+ if (p)
+ return p - me;
+ return -1;
}
int
-String::index_last_i( char const* string ) const // UGK!
-{
- assert(false); // broken
- int length = strlen( string ); // ugrh
- if ( !length_i() || !length )
- return -1;
-
- int next_i = index_i( string );
- if ( next_i == -1 )
- return -1;
-
- int index_i = 0;
- while( next_i >= 0 ) {
- index_i += next_i;
- next_i = right_str( length_i() - index_i - length ).index_i( string );
+String::index_last (char const* string) const // UGK!
+{
+ assert (false); // broken
+ int len = strlen (string); // ugrh
+ if (!length () || !len)
+ return -1;
+
+ int next_i = index (string);
+ if (next_i == -1)
+ return -1;
+
+ int index_i = 0;
+ while (next_i >= 0)
+ {
+ index_i += next_i;
+ next_i = right_string (length () - index_i - len).index (string );
}
- return index_i;
+ return index_i;
}
/** find a character.
@return
- the index of the leftmost character #c# (0 <= return < length_i()),
+ the index of the leftmost character #c# (0 <= return < length ()),
or -1 if not found.
- ? should return length_i()?, as in string.left_str(index_i(delimiter))
+ ? should return length ()?, as in string.left_string (index (delimiter))
*/
int
-String::index_i(char c ) const
+String::index (char c) const
{
- char const* me = strh_.ch_C();
- char const* p = (char const *) memchr( me,c, length_i());
- if ( p )
- return p - me;
- return -1;
+ char const* me = strh_.to_str0 ();
+ char const* p = (char const *) memchr (me,c, length ());
+ if (p)
+ return p - me;
+ return -1;
}
/**
- find the substring.
+ find a substring.
@return
- index of leftmost occurrence of #searchfor#
+1 index of leftmost occurrence of #searchfor#
*/
int
-String::index_i( String searchfor ) const
+String::index (String searchfor) const
{
- char const* me = strh_.ch_C();
- char const* p = (char const *) memmem(
- me, length_i(), searchfor.ch_C(), searchfor.length_i());
-
- if ( p )
- return p - me;
- else
- return -1;
+ char const* me = strh_.to_str0 ();
+
+ char const* p = (char const *)
+ memmem (me, length (), searchfor.to_str0 (), searchfor.length ());
+
+ if (p)
+ return p - me;
+ else
+ return -1;
}
/** find chars of a set.
@return
- the index of the leftmost occurance of an element of #set#
- */
+
+ the index of the leftmost occurance of an element of #set#. -1 if
+ nothing is found.
+
+
+*/
int
-String::index_any_i( String set ) const
+String::index_any (String set) const
{
- int n = length_i();
- if ( !n )
- return -1;
+ int n = length ();
+ if (!n)
+ return -1;
- void const * me_l = (void const *) strh_.ch_C();
- for (int i=0; i < set.length_i(); i++) {
- char * found=(char*) memchr(me_l, set[i], n );
- if (found) {
- return found - me_l;
+ void const * me = (void const *) strh_.to_str0 ();
+ for (int i=0; i < set.length (); i++)
+ {
+ char * found= (char*) memchr (me, set[i], n );
+ if (found)
+ {
+ return found - (char const*)me;
}
}
- return -1;
+ return -1;
}
\f
String
-String::left_str( int n ) const
+String::left_string (int n) const
{
- if (n >= length_i())
- return *this;
+ if (n >= length ())
+ return *this;
- String retval;
- if (n < 1)
- return retval;
-
- retval = *this;
- retval.strh_.trunc(n);
+ String retval;
+ if (n < 1)
return retval;
+
+ retval = *this;
+ retval.strh_.trunc (n);
+ return retval;
}
String
-String::right_str( int n ) const
+String::right_string (int n) const
{
- if (n > length_i())
- return *this;
-
- if ( n < 1)
- return "";
-
- return String( strh_.byte_C() + length_i() - n, n );
+ if (n > length ())
+ return *this;
+
+ if (n < 1)
+ return "";
+
+ return String (strh_.to_bytes () + length () - n, n);
}
String
-String::nomid_str( int index_i, int n ) const
+String::nomid_string (int index_i, int n) const
{
- if ( index_i < 0 ) {
- n += index_i;
- index_i = 0;
+ if (index_i < 0)
+ {
+ n += index_i;
+ index_i = 0;
}
- if ( n <= 0)
- return *this;
-
- return
- left_str( index_i ) +
- right_str( length_i() - index_i - n ) ;
+ if (n <= 0)
+ return *this;
+
+ return
+ left_string (index_i) +
+ right_string (length () - index_i - n) ;
}
-/*
- proposal: change to "cut()"
- */
String
-String::mid_str( int index_i, int n ) const
+String::cut_string (int index_i, int n) const
{
- if (index_i <0) {
- n += index_i;
- index_i=0;
+ if (index_i <0)
+ {
+ n += index_i;
+ index_i=0;
}
-
- if ( !length_i() || ( index_i < 0 ) || ( index_i >= length_i() ) || ( n < 1 ) )
- return String();
+
+ if (!length () || (index_i < 0) || (index_i >= length () ) || (n < 1 ) )
+ return String ();
- if ( ( n > length_i() ) || ( index_i + n > length_i() ) )
- n = length_i() - index_i;
+ if ((n > length ()) || (index_i + n > length () ) )
+ n = length () - index_i;
- return String( byte_C() + index_i, n );
+ return String (to_bytes () + index_i, n);
}
\f
String
-String::upper_str() const
+String::upper_string () const
{
- String str = *this;
- str.to_upper();
- return str;
+ String str = *this;
+ str.to_upper ();
+ return str;
}
void
-String::to_upper()
+String::to_upper ()
{
- char *s = (char*)strh_.byte_l();
- strnupr( s ,length_i());
+ char *s = (char*)strh_.get_bytes ();
+ strnupr (s ,length ());
}
void
-String::to_lower()
+String::to_lower ()
{
- char* s = strh_.ch_l();
- strnlwr(s,length_i());
+ char* s = strh_.get_str0 ();
+ strnlwr (s,length ());
}
String
-String::lower_str() const
+String::lower_string () const
{
- String str = *this;
- str.to_lower();
- return str;
+ String str = *this;
+ str.to_lower ();
+ return str;
}
String
-String::reversed_str() const
+String::reversed_string () const
{
- String str = *this;
- strrev( str.byte_l(), str.length_i() );
- return str;
+ String str = *this;
+ strrev (str.get_bytes (), str.length ());
+ return str;
}
int
-String::value_i() const
+String::to_int () const
{
- return String_convert::dec2_i( *this );
+ return String_convert::dec2int (*this);
}
double
-String::value_f() const
+String::to_double () const
{
- return String_convert::dec2_f( *this );
+ return String_convert::dec2double (*this);
}
+#ifdef STREAM_SUPPORT
+ostream &
+operator << (ostream& os, String d)
+{
+ d.print_on (os);
+ return os;
+}
+
+void
+String::print_on (ostream& os) const
+{
+ if (!strh_.is_binary_bo ())
+ os << to_str0 ();
+ else
+ for (int i = 0; i < length (); i++)
+ os << (Byte) (*this)[ i ];
+}
+#endif
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