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ircd: QoA on conventional semantics of some lexical functions.

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This commit is contained in:
Jason Volk 2017-04-04 16:06:18 -07:00
parent 669c12418a
commit 760e47247e
1 changed files with 69 additions and 20 deletions
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89
include/ircd/lexical.h
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@ -164,12 +164,16 @@ char *strip_colour(char *string);
char *strip_unprintable(char *string);
char *reconstruct_parv(int parc, const char **parv);
string_view chomp(const string_view &str, const char &c = '\n');
string_view chomp(const string_view &str, const string_view &c);
string_view strip(const string_view &str, const char &c = ' ');
string_view strip(const string_view &str, const string_view &c);
char chop(string_view &str);
size_t chomp(string_view &str, const char &c = '\n');
size_t chomp(string_view &str, const string_view &c);
template<class T, class delim> size_t chomp(iterators<T>, const delim &d);
string_view rstrip(const string_view &str, const char &c = ' ');
string_view rstrip(const string_view &str, const string_view &c);
string_view lstrip(const string_view &str, const char &c = ' ');
string_view lstrip(const string_view &str, const string_view &c);
string_view strip(const string_view &str, const char &c = ' ');
string_view strip(const string_view &str, const string_view &c);
std::pair<string_view, string_view> split(const string_view &str, const char &delim = ' ');
std::pair<string_view, string_view> split(const string_view &str, const string_view &delim);
std::pair<string_view, string_view> rsplit(const string_view &str, const char &delim = ' ');
@ -337,6 +341,36 @@ ircd::split(const string_view &str,
};
}
inline ircd::string_view
ircd::strip(const string_view &str,
const string_view &c)
{
return lstrip(rstrip(str, c), c);
}
inline ircd::string_view
ircd::strip(const string_view &str,
const char &c)
{
return lstrip(rstrip(str, c), c);
}
inline ircd::string_view
ircd::rstrip(const string_view &str,
const string_view &c)
{
const auto pos(str.find_last_not_of(c));
return pos != string_view::npos? string_view{str.substr(0, pos + 1)} : str;
}
inline ircd::string_view
ircd::rstrip(const string_view &str,
const char &c)
{
const auto pos(str.find_last_not_of(c));
return pos != string_view::npos? string_view{str.substr(0, pos + 1)} : str;
}
inline ircd::string_view
ircd::lstrip(const string_view &str,
const char &c)
@ -353,34 +387,49 @@ ircd::lstrip(const string_view &str,
return pos != string_view::npos? string_view{str.substr(pos)} : string_view{};
}
inline ircd::string_view
ircd::strip(const string_view &str,
const string_view &c)
template<class T,
class delim>
size_t
ircd::chomp(iterators<T> its,
const delim &d)
{
return chomp(str, c);
return std::accumulate(begin(its), end(its), size_t(0), [&d]
(auto ret, const auto &s)
{
return ret += chomp(s, d);
});
}
inline ircd::string_view
ircd::strip(const string_view &str,
inline size_t
ircd::chomp(string_view &str,
const char &c)
{
return chomp(str, c);
const auto pos(str.find_last_of(c));
if(pos == string_view::npos)
return 0;
assert(str.size() - pos == 1);
str = str.substr(0, pos);
return 1;
}
inline ircd::string_view
ircd::chomp(const string_view &str,
inline size_t
ircd::chomp(string_view &str,
const string_view &c)
{
const auto pos(str.find_last_not_of(c));
return pos != string_view::npos? string_view{str.substr(0, pos + 1)} : str;
const auto pos(str.find_last_of(c));
if(pos == string_view::npos)
return 0;
assert(str.size() - pos == c.size());
str = str.substr(0, pos);
return c.size();
}
inline ircd::string_view
ircd::chomp(const string_view &str,
const char &c)
inline char
ircd::chop(string_view &str)
{
const auto pos(str.find_last_not_of(c));
return pos != string_view::npos? string_view{str.substr(0, pos + 1)} : str;
return !str.empty()? str.pop_back() : '\0';
}
template<size_t N>