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includefile(header.inc)
COMMENT(manpage, section, releasedate, archive, short name)
manpage(FBB::String)(3bobcat)(_CurYrs_)(libbobcat1-dev__CurVers_-x.tar.gz)
(Error handler)
manpagename(FBB::String)(Several extensions to bf(std::string))
manpagesynopsis()
bf(#include <bobcat/string>)nl()
Linking option: tt(-lbobcat)
manpagedescription()
This class offers the same functionality as bf(std::string), adding
facilities for often used transformations, currently missing in
bf(std::string).
manpagesection(NAMESPACE)
bf(FBB)nl()
All constructors, members, operators and manipulators, mentioned in this
man-page, are defined in the namespace bf(FBB).
manpagesection(INHERITS FROM)
--
manpagesection(ENUMERATION)
itemization(
itb(Type)
This enumeration has the following values, which are used in the second
variant of the bf(split) member (see below):
bf(DQUOTE), a series of characters surrounded by double quotes
in the original string;
bf(DQUOTE_UNTERMINATED), a series of characters beginning with
a double quote in the original string, but lacking the matching terminating
double quote;
bf(ESCAPED_END), a series of characters representing an
otherwise normal string, but terminating in a plain backslash;
bf(NORMAL), a normal string;
bf(SEPARATOR), a separator;
bf(SQUOTE), a series of characters surrounded by single quotes
in the original string;
bf(SQUOTE_UNTERMINATED), a series of characters beginning with
a single quote in the original string, but lacking the matching terminating
single quote.
)
manpagesection(TYPEDEF)
The bf(typedef SplitPair) represents bf(std::pair<std::string,
String::Type>) and is used in the second variant of the bf(split) member (see
below).
manpagesection(HISTORY)
Initially this class was derived from bf(std::string). Deriving from
bf(std::string), however, is considerd bad design as tt(std::string) was
not designed as a base-class.
Currently bf(String) offers a series of em(static) member functions
providing the facilities originally implemented in non-static members.
manpagesection(STATIC MEMBER FUNCTIONS)
itemization(
itb(char const **argv(std::vector<std::string> const &words))
Returns a pointer to an allocated series of pointers to the bf(C)
strings stored in the vector tt(words). The caller is responsible for
returning the array of pointers to the common pool, but should em(not) delete
the bf(C)-strings to which the pointers point. The last element of the
returned array is guaranteed to be a 0-pointer.
itb(int casecmp(std::string const &lhs, std::string const &rhs))
Performs a case-insensitive comparison between the two tt(std::string)
objects. A negative value is returned if tt(lhs) should be ordered before
tt(rhs); 0 is returned if the two strings have identical contents; a
positive value is returned if the tt(lhs) object should be ordered beyond
tt(rhs).
itb(std::string escape(std::string const &str,
char const *series = "'\"\\"))
Returns a copy of the tt(str) object in which all characters in
tt(series) are prefixed by a backslash character.
itb(std::string lc(std::string const &str) const)
Returns a copy of the tt(str) object in which all letters were
transformed to lower case letters.
itb(std::string trim(std::string const &str))
Returns a copy of the tt(str) object from which the leading and
trailing blanks have been removed.
itb(size_t split(std::vector<std::string> *words,
std::string const &str,
char const *separators = " \t", bool addEmpty = false))
Fills tt(words) with all elements of the tt(str) object, separated by
any of the characters in tt(separators). If the parameter tt(addEmpty) is set
to tt(true), the individual separators are stored as empty strings in
tt(words). If a word starts with tt(") or tt(') all characters until a
matching terminating tt(") or tt(') at the end of a word are considered as one
word. The surrounding quotes are not stored. The function returns the number
of elements in the vector pointed to by tt(words). This vector is initially
cleared.
itb(size_t split(std::vector<SplitPair> *words,
std::string const &str,
char const *separators = " \t", bool addEmpty = false))
Same functionality as the former member, but the tt(words) vector is
filled with pairs, of which the first elements are the recognized strings, and
the second elements values of the tt(String::Type) enumeration. If
bf(addEmpty) is requested, then the bf(string) elements contain the actual
contents of the separator, while the bf(Type) elements are set to
bf(SEPARATOR).
itb(std::string unescape(std::string const &str))
Returns a copy of the tt(str) object in which the escaped (i.e.,
prefixed by a backslash) characters have been interpreted. All standard escape
characters (tt(\a), tt(\b), tt(\f), tt(\n), tt(\r), tt(\t), tt(\v)) are
recognized. If an escape character is followed by tt(x) the next two
characters are interpreted as a hexadecimal number. If an escape character is
followed by an octal digit, then the next three characters following the
backslash are interpreted as an octal number. In all other cases, the
backslash is removed and the character following the backslash is kept.
itb(std::string uc(std::string const &str))
Returns a copy of the tt(str) object in which all letters were
capitalized.
)
manpagesection(EXAMPLE)
verb(
#include <iostream>
#include <vector>
#include <bobcat/string>
using namespace std;
using namespace FBB;
char const *type[] =
{
"DQUOTE_UNTERMINATED",
"SQUOTE_UNTERMINATED",
"ESCAPED_END",
"SEPARATOR",
"NORMAL",
"DQUOTE",
"SQUOTE",
};
int main(int argc, char **argv)
{
cout << "Program's name in uppercase: " << String::uc(argv[0]) << endl;
if (argc == 1)
cout << "Provide any argument to suppress SEPARATOR fields\n";
while (true)
{
cout << "Enter a line, or empty line to stop:" << endl;
String line;
if (!getline(cin, line) || !line.length())
break;
vector<String::SplitPair> splitpair;
cout << "Split into " << line.split(&splitpair, " \t", argc == 1) <<
" fields\n";
for
(
vector<String::SplitPair>::iterator it = splitpair.begin();
it != splitpair.end();
++it
)
cout << (it - splitpair.begin() + 1) << ": " <<
type[it->second] << ": `" << it->first <<
"', unescaped: `" << String(it->first).unescape() <<
"'" << endl;
}
return 0;
}
)
manpagefiles()
em(bobcat/string) - defines the class interface
manpageseealso()
bf(bobcat)(7)
manpagebugs()
None Reported.
includefile(trailer.inc)
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