WvStreams
Public Member Functions | Static Public Member Functions | Static Public Attributes | Protected Member Functions | Protected Attributes | Static Protected Attributes | List of all members
WvStringStar Class Reference

A ridiculous class needed because UniConf::operator->() needs to return a pointer, even though that pointer is going to be dereferenced immediately anyway. More...

#include <wvstring.h>

Inheritance diagram for WvStringStar:
Inheritance graph
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Public Member Functions

 WvStringStar (WvStringParm s)
 
WvFastStringoperator-> ()
 
void setsize (size_t i)
 
WvFastString offset (size_t i) const
 Returns a copy of string pointed i bytes into this. More...
 
size_t len () const
 
bool operator== (WvStringParm s2) const
 
bool operator== (const char *s2) const
 
bool operator!= (WvStringParm s2) const
 
bool operator!= (const char *s2) const
 
bool operator< (WvStringParm s2) const
 
bool operator< (const char *s2) const
 
bool operator! () const
 the not operator is 'true' if string is empty
 
const char * operator+ (int i) const
 
const char * operator- (int i) const
 
 operator const char * () const
 auto-convert WvString to (const char *), when needed.
 
const char * cstr () const
 return a (const char *) for this string. More...
 
 operator QString () const
 return a Qt library QString containing the contents of this string. More...
 
int num () const
 Return a stdc++ string with the contents of this string. More...
 
bool isnull () const
 returns true if this string is null
 
const WvFastStringifnull (WvStringParm defval) const
 returns either this string, or, if isnull(), the given string.
 

Static Public Member Functions

static void do_format (WvFastString &output, const char *format, const WvFastString *const *a)
 when this is called, we assume output.str == NULL; it will be filled. More...
 

Static Public Attributes

static const WvFastString null
 

Protected Member Functions

void construct (const char *_str)
 
void link (WvStringBuf *_buf, const char *_str)
 
void unlink ()
 
WvStringBufalloc (size_t size)
 
void newbuf (size_t size)
 

Protected Attributes

WvStringBufbuf
 
char * str
 

Static Protected Attributes

static WvStringBuf nullbuf = { 0, 1 }
 

Detailed Description

A ridiculous class needed because UniConf::operator->() needs to return a pointer, even though that pointer is going to be dereferenced immediately anyway.

We can instantiate a temporary WvStringStar, which can then return its 'this' pointer.

Definition at line 420 of file wvstring.h.

Member Function Documentation

◆ offset()

WvFastString WvFastString::offset ( size_t  i) const
inherited

Returns a copy of string pointed i bytes into this.

Will not make it point past the trailing null byte.

Definition at line 79 of file wvstring.cc.

◆ do_format()

void WvFastString::do_format ( WvFastString output,
const char *  format,
const WvFastString *const *  argv 
)
staticinherited

when this is called, we assume output.str == NULL; it will be filled.

Accept a printf-like format specifier (but more limited) and an array of WvStrings, and render them into another WvString.

For example: WvString x[] = {"foo", "blue", 1234}; WvString ret = WvString::do_format("%s%10.2s%-10s", x);

The 'ret' string will be: "foo bl1234 " Note that only 's' is supported, though integers can be rendered automatically into WvStrings. d, f, etc are not allowed!

This function is usually called from some other function which allocates the array automatically.

$ns (n > 0) is also supported for internationalization purposes. e.g. ("%$2s is arg2, and %$1s ia arg1", arg1, arg2)

Definition at line 497 of file wvstring.cc.

References WvFastString::cstr().

Referenced by WvFastString::WvFastString().

◆ cstr()

const char* WvFastString::cstr ( ) const
inlineinherited

return a (const char *) for this string.

The typecast operator does this automatically when needed, but sometimes (especially with varargs like in printf()) that isn't convenient enough.

Definition at line 267 of file wvstring.h.

Referenced by WvBackslashEncoder::_encode(), WvFastString::do_format(), UniRetryGen::exists(), UniRegistryGen::get(), UniPStoreGen::get(), UniRetryGen::get(), WvConstStringBuffer::reset(), UniRegistryGen::set(), UniPStoreGen::set(), UniReplicateGen::set(), substr(), and WvLog::uwrite().

◆ operator QString()

WvFastString::operator QString ( ) const
inherited

return a Qt library QString containing the contents of this string.

You need to link to libwvqt.so if you use this.

Definition at line 42 of file wvqtstring.cc.

◆ num()

int WvFastString::num ( ) const
inlineinherited

Return a stdc++ string with the contents of this string.

To use this, #include wvstdstring.h. used to convert WvString to int, when needed. we no longer provide a typecast, because it causes annoyance.

Definition at line 286 of file wvstring.h.

Referenced by WvDBusServerAuth::authorize(), UniConfDaemonConn::execute(), WvDBusMsg::Iter::get_int(), WvIPRouteList::get_kernel(), and WvDBusMsg::Iter::get_uint().


The documentation for this class was generated from the following file: