-/* -*- c-basic-offset: 2 -*-
- * Defines String::compose(fmt, arg...) for easy, i18n-friendly
- * composition of strings.
- *
- * Version 1.0.
- *
- * Copyright (c) 2002 Ole Laursen <olau@hardworking.dk>.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA.
- */
+/*
+ Copyright (C) 2021 Carl Hetherington <cth@carlh.net>
-//
-// Basic usage is like
-//
-// std::cout << String::compose("This is a %1x%2 matrix.", rows, cols);
-//
-// See http://www.cs.aau.dk/~olau/compose/ or the included README.compose for
-// more details.
-//
+ This file is part of libdcp.
-#ifndef STRING_COMPOSE_H
-#define STRING_COMPOSE_H
+ libdcp is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-#include "locale_convert.h"
-#include <boost/filesystem.hpp>
-#include <string>
-#include <list>
-#include <map>
-#include <inttypes.h>
-#include <cstdio>
+ libdcp is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-namespace dcp {
-
-namespace StringPrivate
-{
- // the actual composition class - using string::compose is cleaner, so we
- // hide it here
- class Composition
- {
- public:
- // initialize and prepare format string on the form "text %1 text %2 etc."
- explicit Composition(std::string fmt);
+ You should have received a copy of the GNU General Public License
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
- // supply an replacement argument starting from %1
- template <typename T>
- Composition &arg(const T &obj);
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
- // compose and return string
- std::string str() const;
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
+*/
- private:
- std::string os;
- int arg_no;
- // we store the output as a list - when the output string is requested, the
- // list is concatenated to a string; this way we can keep iterators into
- // the list instead of into a string where they're possibly invalidated on
- // inserting a specification string
- typedef std::list<std::string> output_list;
- output_list output;
+#ifndef LIBDCP_STRING_H
+#define LIBDCP_STRING_H
- // the initial parse of the format string fills in the specification map
- // with positions for each of the various %?s
- typedef std::multimap<int, output_list::iterator> specification_map;
- specification_map specs;
- };
- // helper for converting spec string numbers
- inline int char_to_int(char c)
- {
- switch (c) {
- case '0': return 0;
- case '1': return 1;
- case '2': return 2;
- case '3': return 3;
- case '4': return 4;
- case '5': return 5;
- case '6': return 6;
- case '7': return 7;
- case '8': return 8;
- case '9': return 9;
- default: return -1000;
- }
- }
-
- inline bool is_number(int n)
- {
- switch (n) {
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- return true;
-
- default:
- return false;
- }
- }
-
- // implementation of class Composition
- template <typename T>
- inline Composition &Composition::arg(const T &obj)
- {
- os += dcp::locale_convert<std::string> (obj);
+#include "dcp_assert.h"
+#include "locale_convert.h"
+#include <boost/algorithm/string.hpp>
+#include <string>
+#include <vector>
- if (!os.empty()) { // manipulators don't produce output
- for (specification_map::const_iterator i = specs.lower_bound(arg_no), end = specs.upper_bound(arg_no); i != end; ++i) {
- output_list::iterator pos = i->second;
- ++pos;
- output.insert(pos, os);
- }
+namespace dcp {
- os = "";
- ++arg_no;
- }
- return *this;
- }
+void collect(std::vector<std::string>&);
- inline Composition::Composition(std::string fmt)
- : arg_no(1)
- {
- std::string::size_type b = 0, i = 0;
- // fill in output with the strings between the %1 %2 %3 etc. and
- // fill in specs with the positions
- while (i < fmt.length()) {
- if (fmt[i] == '%' && i + 1 < fmt.length()) {
- if (fmt[i + 1] == '%') { // catch %%
- fmt.replace(i, 2, "%");
- ++i;
+template <typename T, typename ...Ts>
+void collect(std::vector<std::string>& string_args, T arg, Ts... rest)
+{
+ auto const string_arg = locale_convert<std::string>(arg);
+ if (!string_arg.empty()) {
+ string_args.push_back(string_arg);
}
- else if (is_number(fmt[i + 1])) { // aha! a spec!
- // save string
- output.push_back(fmt.substr(b, i - b));
-
- int n = 1; // number of digits
- int spec_no = 0;
+ collect(string_args, rest...);
+}
- do {
- spec_no += char_to_int(fmt[i + n]);
- spec_no *= 10;
- ++n;
- } while (i + n < fmt.length() && is_number(fmt[i + n]));
- spec_no /= 10;
- output_list::iterator pos = output.end();
- --pos; // safe since we have just inserted a string>
+namespace String {
- specs.insert(specification_map::value_type(spec_no, pos));
- // jump over spec string
- i += n;
- b = i;
+template <typename...Ts>
+std::string compose(std::string fmt, Ts... args)
+{
+ std::vector<std::string> string_args;
+ collect(string_args, args...);
+ for (auto i = 0U; i < 10; ++i) {
+ std::string place = "%";
+ place += static_cast<char>(49 + i);
+ std::string value = i < string_args.size() ? string_args[i] : "";
+ boost::algorithm::replace_all(fmt, place, value);
}
- else
- ++i;
- }
- else
- ++i;
- }
-
- if (i - b > 0) // add the rest of the string
- output.push_back(fmt.substr(b, i - b));
- }
-
- inline std::string Composition::str() const
- {
- // assemble string
- std::string str;
-
- for (output_list::const_iterator i = output.begin(), end = output.end();
- i != end; ++i)
- str += *i;
-
- return str;
- }
+ boost::algorithm::replace_all(fmt, "%%", "%");
+ return fmt;
}
-// now for the real thing(s)
-namespace String
-{
- // a series of functions which accept a format string on the form "text %1
- // more %2 less %3" and a number of templated parameters and spits out the
- // composited string
- template <typename T1>
- inline std::string compose(const std::string &fmt, const T1 &o1)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1);
- return c.str();
- }
-
- template <typename T1, typename T2>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7);
- return c.str();
- }
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9,
- const T10 &o10)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
- .arg(o10);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10,
- typename T11>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9,
- const T10 &o10, const T11 &o11)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
- .arg(o10).arg(o11);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10,
- typename T11, typename T12>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9,
- const T10 &o10, const T11 &o11, const T12 &o12)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
- .arg(o10).arg(o11).arg(o12);
- return c.str();
- }
-
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10,
- typename T11, typename T12, typename T13>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9,
- const T10 &o10, const T11 &o11, const T12 &o12,
- const T13 &o13)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
- .arg(o10).arg(o11).arg(o12).arg(o13);
- return c.str();
- }
+}
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10,
- typename T11, typename T12, typename T13, typename T14>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9,
- const T10 &o10, const T11 &o11, const T12 &o12,
- const T13 &o13, const T14 &o14)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
- .arg(o10).arg(o11).arg(o12).arg(o13).arg(o14);
- return c.str();
- }
- template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10,
- typename T11, typename T12, typename T13, typename T14,
- typename T15>
- inline std::string compose(const std::string &fmt,
- const T1 &o1, const T2 &o2, const T3 &o3,
- const T4 &o4, const T5 &o5, const T6 &o6,
- const T7 &o7, const T8 &o8, const T9 &o9,
- const T10 &o10, const T11 &o11, const T12 &o12,
- const T13 &o13, const T14 &o14, const T15 &o15)
- {
- StringPrivate::Composition c(fmt);
- c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
- .arg(o10).arg(o11).arg(o12).arg(o13).arg(o14).arg(o15);
- return c.str();
- }
}
-}
-#endif // STRING_COMPOSE_H
+#endif
+
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