*
* LyX, The Document Processor
*
- * Copyright (C) 1995 Matthias Ettrich
- * Copyright (C) 1995-1999 The LyX Team.
+ * Copyright 1995 Matthias Ettrich
+ * Copyright 1995-2000 The LyX Team.
*
* ====================================================== */
#pragma implementation "lyxstring.h"
#endif
-//#include "LString.h"
#include "lyxstring.h"
#include <cstdlib>
#include <cctype>
#include "LAssert.h"
using std::min;
+using std::istream;
+using std::ostream;
// This class is supposed to be functionaly equivalent to a
// standard conformant string. This mean among others that we
// Lgb.
-#if 0
-// I have no clue why this function is needed at all, it is static and
-// confined to this filescope. How can any other file/fuction/module
-// get access to it at all?? Perhaps the forward declaration in LString.h
-// is enough. ARRae, any clues? Lgb.
-
-#ifdef HAVE_STL_STRING_FWD_H
-// SGI's STL > 3.13 expects string to provide __get_c_string.
-// Due to a clash with SGI's forward declaration of string we have
-// to provide this ourselves and block their string declarations
-// as best we can. ARRae.
-
-static char const * __get_c_string(string const & s)
-{
- return s.c_str();
-}
-#endif
-#endif
-
-
///////////////////////////////////////
// The internal string representation
///////////////////////////////////////
lyxstring::Srep::Srep(lyxstring::size_type nsz, const value_type * p)
{
-// can be called with p == 0 by lyxstring::assign(const value_type *, size_type)
+ // can be called with p == 0 by
+ // lyxstring::assign(const value_type *, size_type)
sz = nsz;
ref = 1;
void lyxstring::Srep::assign(lyxstring::size_type nsz, const value_type * p)
{
-// can be called with p == 0 by lyxstring::assign(const value_type *, size_type)
+ // can be called with p == 0
+ // by lyxstring::assign(const value_type *, size_type)
if (res < nsz) {
delete[] s;
void lyxstring::Srep::insert(lyxstring::size_type pos, const value_type * p,
- lyxstring::size_type n)
+ lyxstring::size_type n)
{
if (res < n + sz) {
do {
void lyxstring::Srep::replace(lyxstring::size_type i, lyxstring::size_type n,
- value_type const * p, size_type n2)
+ value_type const * p, size_type n2)
{
// can be called with p= 0 and n2= 0
n = min(sz - i, n);
///////////////////////////////////////
// The lyxstring Invariant tester
///////////////////////////////////////
-#ifdef DEVEL_VERSION
+#ifdef ENABLE_ASSERTIONS
/** Testing of the lyxstring invariant
* By creating an object that tests the lyxstring invariant during its
#define TestlyxstringInvariant(s) lyxstringInvariant lyxstring_invariant(s);
#else
#define TestlyxstringInvariant(s)
-#endif //DEVEL_VERSION
+#endif /* ENABLE_ASSERTIONS */
///////////////////////////////////////
{
Assert(s && n < npos); // STD!
static Srep empty_rep(0, "");
- if (*s && n) { // s is not empty string and n > 0
- rep = new Srep(min(strlen(s), n), s);
+ if (n) { // n > 0
+ rep = new Srep(n, s);
} else {
++empty_rep.ref;
rep = &empty_rep;
lyxstring::iterator lyxstring::begin()
{
+ rep = rep->get_own_copy();
return rep->s;
}
lyxstring::iterator lyxstring::end()
{
+ rep = rep->get_own_copy();
return rep->s + rep->sz;
}
// Assignment
////////////////
-lyxstring & lyxstring::operator= (lyxstring const & x)
+lyxstring & lyxstring::operator=(lyxstring const & x)
{
TestlyxstringInvariant(this);
}
-lyxstring & lyxstring::operator= (value_type const * s)
+lyxstring & lyxstring::operator=(value_type const * s)
{
Assert(s); // OURS!
TestlyxstringInvariant(this);
lyxstring & lyxstring::assign(value_type const * s, size_type n)
{
- Assert(s); // OURS!
+ Assert(s && n < npos); // STD!
TestlyxstringInvariant(this);
- n = min(strlen(s), n);
if (rep->ref == 1) // recycle rep
rep->assign(n, s);
else {
- rep->ref--;
+ --rep->ref;
rep = new Srep(n, s);
}
return *this;
if (!*p || !n) return *this;
rep = rep->get_own_copy();
- rep->append(min(n, strlen(p)), p);
+ rep->append(n, p);
return *this;
}
lyxstring & lyxstring::append(value_type const * p)
{
Assert(p); // OURS!
- TestlyxstringInvariant(this);
-
- if (!*p) return *this;
- rep = rep->get_own_copy();
- rep->append(strlen(p), p);
- return *this;
+ return append(p, strlen(p));
}
return *this;
}
-// insert value_typeacters before (*this)[pos]
+// insert characters before (*this)[pos]
lyxstring & lyxstring::insert(size_type pos, lyxstring const & x)
{
lyxstring & lyxstring::insert(size_type pos, lyxstring const & x,
- size_type pos2, size_type n)
+ size_type pos2, size_type n)
{
Assert(pos <= rep->sz && pos2 <= x.rep->sz); // STD!
TestlyxstringInvariant(this);
if (*p && n) {
// insert nothing and you change nothing
rep = rep->get_own_copy();
- rep->insert(pos, p, min(n, strlen(p)));
+ rep->insert(pos, p, n);
}
return *this;
}
lyxstring & lyxstring::insert(size_type pos, value_type const * p)
{
Assert(p); // OURS!
- TestlyxstringInvariant(this);
-
- if (*p) {
- // insert nothing and you change nothing
- rep = rep->get_own_copy();
- rep->insert(pos, p, strlen(p));
- }
- return *this;
+ return insert(pos, p, strlen(p));
}
lyxstring::size_type lyxstring::find(value_type const * ptr, size_type i,
- size_type n) const
+ size_type n) const
{
Assert(ptr); // OURS!
if (!rep->sz || !*ptr || i >= rep->sz) return npos;
lyxstring::size_type lyxstring::rfind(value_type const * ptr, size_type i,
- size_type n) const
+ size_type n) const
{
Assert(ptr); // OURS!
TestlyxstringInvariant(this);
if (!n) return npos;
for (size_type t = i; t < rep->sz; ++t) {
- if(memchr(ptr, rep->s[t], n) != 0) return t;
+ if (memchr(ptr, rep->s[t], n) != 0) return t;
}
return npos;
}
size_type ii = min(rep->sz - 1, i);
for (int t = ii; t >= 0; --t) {
- if(memchr(ptr, rep->s[t], n) != 0) return t;
+ if (memchr(ptr, rep->s[t], n) != 0) return t;
}
return npos;
}
if (!n) return (i < rep->sz) ? i : npos;
for (size_type t = i; t < rep->sz; ++t) {
- if(memchr(ptr, rep->s[t], n) == 0) return t;
+ if (memchr(ptr, rep->s[t], n) == 0) return t;
}
return npos;
}
size_type ii = min(rep->sz - 1, i);
for (int t = ii; t >= 0; --t) {
- if(memchr(ptr, rep->s[t], n) == 0) return t;
+ if (memchr(ptr, rep->s[t], n) == 0) return t;
}
return npos;
}
lyxstring & lyxstring::replace(size_type i, size_type n,
size_type n2, value_type c)
{
- Assert(i < rep->sz); // OURS!
+ Assert(i <= rep->sz); // OURS!
TestlyxstringInvariant(this);
rep = rep->get_own_copy();
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