pegasus/src/Pegasus/Common/String.h - diff

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Diff for /pegasus/src/Pegasus/Common/String.h between version 1.20 and 1.32

version 1.20, 2001/04/27 20:44:38

version 1.32, 2001/06/12 08:27:43

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#define Pegasus_String_h

#include <iostream>

#include <fstream>

#include <cstring>

#include <Pegasus/Common/Config.h>

#include <Pegasus/Common/Char16.h>

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String(const char* x, Uint32 n);

/// String destructor. Used by the representation of the String object

~String()

~String();

{

}

/** Assign this string with x.

<pre>

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String t2 = t1;

</pre>

String& operator=(const String& x) { _rep = x._rep; return *this; }

String& operator=(const String& x) { return assign(x); }

/// Assign this string with x.

/// Assign this string with Char16 x.

String& operator=(const Char16* x) { assign(x); return *this; }

/// Assign this string with x.

/** Assign this string with String x

String& assign(const String& x) { _rep = x._rep; return *this; }

@param x String to assign

@return Returns the String

String& assign(const String& x);

/// Assign this string with x.

String& assign(const Char16* x);

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/// Assign this string with first n characters of the plain old C-String x.

String& assign(const char* x, Uint32 n);

/** Clear this string. After calling clear(), getLength() will return 0.

/** clear - Clear this string. After calling clear(), size() will return 0.

<pre>

String test = "abc";

test.clear(); // String test is now NULL (length == 0)

</pre>

void clear() { _rep.clear(); _rep.append('\0'); }

void clear();

/** Reserves memory for capacity characters. Notice that this does not

/** reserve - Reserves memory for capacity characters. Notice that this does

change the size of the string (getSize() returns what it did before).

not

change the size of the string (size() returns what it did before).

If the capacity of the string is already greater or equal to the

capacity argument, this method has no effect. After calling reserve(),

getCapicty() returns a value which is greater or equal to the

capacity argument.

@param capacity defines the capacity in characters to reserve.

void reserve(Uint32 capacity) { _rep.reserve(capacity + 1); }

void reserve(Uint32 capacity);

/** Returns the length of the String object.

@return Length of the string in characters.

<pre>

String s = "abcd";

assert(s.getLength() == 4);

assert(s.size() == 4);

</pre>

Uint32 getLength() const { return _rep.getSize() - 1; }

Uint32 size() const { return _rep.size() - 1; }

/** Returns a pointer to the first character in the null-terminated string

string.

@param

@return Pointer to the first character of the String object

<pre>

String t1 = "abc";

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const Char16* getData() const { return _rep.getData(); }

/** Allocates an 8 bit representation of this string. The user is

/** AallocateCString - llocates an 8 bit representation of this string. The

user is

responsible for freeing the result. If any characters are truncated,

a TruncatedCharacter exception is thrown. This exception may

be suppressed by passing true as the noThrow argument. Extra

characters may be allocated at the end of the new string by

passing a non-zero value to the extraBytes argument.

@param extraBytes - Defines the number of extra characters to be

@param extraBytes Defines the number of extra characters to be

allocated at the end of the new string. Default is zero.

@param noThrow - If true, no exception will be thrown if characters

@param noThrow If true, no exception will be thrown if characters

are truncated

@return pointer to the new representation of the string

@exception Throws TruncatedCharacter exception if any characters are

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char* allocateCString(Uint32 extraBytes = 0, Boolean noThrow = false) const;

/** Append the given string to a C-string. If the length is not Uint32(-1),

/** appendToCString - Append the given string to a C-string. If the length

then the lesser of the the length argument and the length of this

is not PEG_NOT_FOUND, then the lesser of the the length argument and the

string is truncated. Otherwise, the entire string is trunctated. The

length of this string is truncated. Otherwise, the entire string is

TruncatedCharacter exception is thrown if any characters are truncated.

trunctated. The TruncatedCharacter exception is thrown if any characters

are truncated.

@param str Char pointer to the string to append

@param length Length to append or PEG_NOT_FOUND (Uint32(-1)

@param noThrow - If false, throw the "TruncatedCharacter" exception of

any characters are truncated

@return void

@exception Throws TruncatedCharacter exception of characters are

truncated and noThrow parameter is false.

<pre>

const char STR0[] = "one two three four";

String s = STR0;

const char STR1[] = "zero ";

char* tmp = new char[strlen(STR1) + s.getLength() + 1];

char* tmp = new char[strlen(STR1) + s.size() + 1];

strcpy(tmp, STR1);

s.appendToCString(tmp, 7);

assert(strcmp(tmp, "zero one two") == 0);

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void appendToCString(

char* str,

Uint32 length = Uint32(-1),

Uint32 length = PEG_NOT_FOUND,

Boolean noThrow = false) const;

/** Returns the Ith character of the String object.

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s4.append(Char16(0x0000))

</pre>

String& append(const Char16& c)

String& append(const Char16& c);

{

_rep.insert(_rep.getSize() - 1, c);

return *this;

}

/// Append n characters from str to this String object.

String& append(const Char16* str, Uint32 n);

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/// Append the characters of str to this String object.

String& append(const String& str)

{

return append(str.getData(), str.getLength());

return append(str.getData(), str.size());

}

/** Overload operator += appends the parameter String to this String.

@parm String to append.

@param String to append.

@return This String

<pre>

String test = "abc";

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}

/** Append the character given by c to this String object.

@param c - Single character

@param c Single character to be appended

@return String with appended character

String& operator+=(Char16 c)

{

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}

/** Remove size characters from the string starting at the given

position. If size is -1, then all characters after pos are removed.

position. If size is PEG_NOT_FOUND, then all characters after pos are

@param pos - Position in string to start remove

removed.

@param size - Number of characters to remove. Default is -1 which

@param pos Position in string to start remove

causes all characters after pos to be removed

@param size Number of characters to remove. Default is PEG_NOT_FOUND

(Uint32(-1) which causes all characters after pos to be removed

<pre>

String s;

s = "abc";

s.remove(0, 1);

assert(String::equal(s, "bc"));

assert(s.getLength() == 2);

assert(s.size() == 2);

s.remove(0);

assert(String::equal(s, ""));

assert(s.getLength() == 0);

assert(s.size() == 0);

</pre>

@exception throws "OutOfBounds" exception if size is greater than

length of String plus starting position for remove.

void remove(Uint32 pos, Uint32 size = Uint32(-1));

void remove(Uint32 pos, Uint32 size = PEG_NOT_FOUND);

/** Return a new String which is initialzed with <TT>length</TT>

characters from this string starting at <TT>pos</TT>.

@param <TT>pos</TT> is the positon in string to start getting the

substring.

@param <TT>length</TT> is the number of characters to get. If length

is -1, then all characters after pos are added to the new string.

is PEG_NOT_FOUND, then all characters after pos are added to the new

string.

@return String with the defined substring.

<pre>

s = "abcdefg";

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assert(String::equal(s, "abc"));

</pre>

String subString(Uint32 pos, Uint32 length = Uint32(-1)) const;

String subString(Uint32 pos, Uint32 length = PEG_NOT_FOUND) const;

/** Find the position of the first occurence of the character c.

If the character is not found, -1 is returned.

If the character is not found, PEG_NOT_FOUND is returned.

@param c - Char to be found in the String

@param c Char to be found in the String

@return Position of the character in the string or -1 if not found.

@return Position of the character in the string or PEG_NOT_FOUND if not

found.

Uint32 find(Char16 c) const;

/** Find the position of the first occurence of the string object.

This function finds one string inside another

If the matching substring is not found, -1 is returned.

If the matching substring is not found, PEG_NOT_FOUND is returned.

@param s - String object to be found in the String

@param s String object to be found in the String

@return Position of the substring in the String or -1 if not

@return Position of the substring in the String or PEG_NOT_FOUND if not

found.

Uint32 find(const String& s) const;

/** Find substring

@ param - 16 bit character pointer

@ param 16 bit character pointer

@seealso find

@return Position of the substring in the String or PEG_NOT_FOUND if not

found.

Uint32 find(const Char16* s) const;

/** find substring

@param char* to substring

@param s char* to substring

@return Position of the substring in the String or PEG_NOT_FOUND if not

found.

Uint32 find(const char* s) const;

/** Same as find() but start looking in reverse (last character first).

/** reverseFind - Same as find() but start looking in reverse (last

character first).

@param c Char16 character to find in String.

@Seealso find

@return Position of the character in the string or -1 if not found.

@return Position of the character in the string or PEG_NOT_FOUND if not

found.

NOTE: This function is defined only for char* input, not for

String.

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void toLower();

/** Compare the first n characters of the two strings.

/** Translate any occurences of fromChar to toChar.

@param s1 - First null-terminated string for the comparison

@param s2 - Second null-terminated string for the comparison

void translate(Char16 fromChar, Char16 toChar);

@param n - Number of characters to compare

@return Return -1 if s1 is lexographically less than s2. If they

/** Compare the first n characters of the two strings..

are equavalent return 0. Otherwise return 1.

@param s1 First null-terminated string for the comparison.

@param s2 Second null-terminated string for the comparison.

@param n Number of characters to compare.

@return Return -1 if s1 is lexographically less than s2. If they are

equavalent return 0. Otherwise return 1.

static int compare(const Char16* s1, const Char16* s2, Uint32 n);

/** Just like one above except ignores case differences.

static int compareNoCase(const char* s1, const char* s2, Uint32 n);

/** Compare two null-terminated strings.

@param s1 - First null-terminated string for the comparison

@param s1 First null-terminated string for the comparison.

@param s2 - Second null-terminated string for the comparison

@param s2 Second null-terminated string for the comparison.

@return If s1 is less than s2, return -1; if equal return 0;

otherwise, return 1.

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static int compare(const Char16* s1, const Char16* s2);

/** Compare two String objects for equality.

@param s1 - First <TT>String</TT> for comparison.

@param s1 First <TT>String</TT> for comparison.

@param s2 - Second <TT>String</TT> for comparison.

@param s2 Second <TT>String</TT> for comparison.

@return Boolean true if the two strings are equal.

<pre>

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/// Return true if the two strings are equal.

static Boolean equal(const char* x, const String& y);

static Boolean equalIgnoreCase(const String& x, const String& y);

static Boolean equalNoCase(const String& x, const String& y);

/// Convert the plain old C-string to lower case:

static void toLower(char* str);

/** Split the given string into fields. Fields are separated by

whitespace. Fields containing whitespace must be surrounded

by quotes. This method modifies the original string (while

unescaping embedded quote characters).

static void split(const String& line, Array<String>& fields);

/** Joins fields into a single string (the reverse of the split() method.

static void join(Array<String>& fields, String& line);

/** Escape special characters in a string. This method is used by

join(). It escapes newlines, returns, tabs, form-feeds, and full quotes.

If the string has spaces, then full quotes will be placed around it.

@param in input string

@param in output string (which is appended to).

@returns true if string has spaces.

static Boolean escape(const String& in, String& out);

/** EMPTY - Represent an empty string.

This member is used to represent empty strings. Using this member

avoids an expensive construction of an empty string (e.g., String()).

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return !String::equal(x, y);

}

PEGASUS_COMMON_LINKAGE std::ostream& operator<<(

PEGASUS_COMMON_LINKAGE PEGASUS_STD(ostream)& operator<<(

std::ostream& os,

PEGASUS_STD(ostream)& os,

const String& x);

/** overload operator + - Concatenates String objects.

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/** Compare two strings but ignore any case differences.

PEGASUS_COMMON_LINKAGE int CompareIgnoreCase(const char* s1, const char* s2);

PEGASUS_COMMON_LINKAGE int CompareNoCase(const char* s1, const char* s2);

/** Get the next line from the input file.

PEGASUS_COMMON_LINKAGE Boolean GetLine(std::istream& is, String& line);

PEGASUS_COMMON_LINKAGE Boolean GetLine(PEGASUS_STD(istream)& is, String& line);

/* This is an internal class not to be used by the internal Pegasus

/* This is an internal class to be used by the internal Pegasus

components only. It provides an easy way to create an 8-bit string

representation on the fly without calling allocateCString() and

then worrying about deleting the string. The underscore before the

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char* _rep;

};

inline Uint32 _Length(const String& s1) { return s1.size(); }

inline Uint32 _Length(const char* s1) { return strlen(s1); }

inline Uint32 _Length(const char) { return 1; }

template<class S1, class S2>

inline String Cat(const S1& s1, const S2& s2)

{

String tmp;

tmp.reserve(_Length(s1) + _Length(s2));

tmp.append(s1);

tmp.append(s2);

return tmp;

}

template<class S1, class S2, class S3>

inline String Cat(const S1& s1, const S2& s2, const S3& s3)

{

String tmp;

tmp.reserve(_Length(s1) + _Length(s2) + _Length(s3));

tmp.append(s1);

tmp.append(s2);

tmp.append(s3);

return tmp;

}

template<class S1, class S2, class S3, class S4>

inline String Cat(const S1& s1, const S2& s2, const S3& s3, const S4& s4)

{

String tmp;

tmp.reserve(_Length(s1) + _Length(s2) + _Length(s3) + _Length(s4));

tmp.append(s1);

tmp.append(s2);

tmp.append(s3);

tmp.append(s4);

return tmp;

}

template<class S1, class S2, class S3, class S4, class S5>

inline String Cat(

const S1& s1,

const S2& s2,

const S3& s3,

const S4& s4,

const S5& s5)

{

String tmp;

tmp.reserve(_Length(s1) + _Length(s2) + _Length(s3) + _Length(s4) +

_Length(s5));

tmp.append(s1);

tmp.append(s2);

tmp.append(s3);

tmp.append(s4);

tmp.append(s5);

return tmp;

}

template<class S1, class S2, class S3, class S4, class S5, class S6>

inline String Cat(

const S1& s1,

const S2& s2,

const S3& s3,

const S4& s4,

const S5& s5,

const S6& s6)

{

String tmp;

tmp.reserve(_Length(s1) + _Length(s2) + _Length(s3) + _Length(s4) +

_Length(s5) + _Length(s6));

tmp.append(s1);

tmp.append(s2);

tmp.append(s3);

tmp.append(s4);

tmp.append(s5);

tmp.append(s6);

return tmp;

}

PEGASUS_COMMON_LINKAGE const Array<String>& EmptyStringArray();

PEGASUS_COMMON_LINKAGE Boolean Equal(const String& x, const String& y);

inline Boolean Open(PEGASUS_STD(ifstream)& is, const String& path)

{

char* tmpPath = path.allocateCString();

is.open(tmpPath);

delete [] tmpPath;

return !!is;

}

inline Boolean Open(PEGASUS_STD(ofstream)& os, const String& path)

{

char* tmpPath = path.allocateCString();

os.open(tmpPath);

delete [] tmpPath;

return !!os;

}

inline Boolean OpenAppend(PEGASUS_STD(ofstream)& os, const String& path)

{

char* tmpPath = path.allocateCString();

os.open(tmpPath, PEGASUS_STD(ios::app));

delete [] tmpPath;

return !!os;

}

#define PEGASUS_ARRAY_T String

#include <Pegasus/Common/ArrayInter.h>

#undef PEGASUS_ARRAY_T

PEGASUS_NAMESPACE_END

#endif /* Pegasus_String_h */

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	Added in v.1.32

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