diff options
Diffstat (limited to 'libs/pbd/pbd/compose.h')
-rw-r--r-- | libs/pbd/pbd/compose.h | 755 |
1 files changed, 376 insertions, 379 deletions
diff --git a/libs/pbd/pbd/compose.h b/libs/pbd/pbd/compose.h index 231afa583e..c7a225ca32 100644 --- a/libs/pbd/pbd/compose.h +++ b/libs/pbd/pbd/compose.h @@ -36,400 +36,397 @@ #include <sstream> #include <string> #include <list> -#include <map> // for multimap +#include <map> // for multimap #include "pbd/libpbd_visibility.h" namespace StringPrivate { - // the actual composition class - using string::compose is cleaner, so we - // hide it here - class LIBPBD_API Composition - { - public: - // initialize and prepare format string on the form "text %1 text %2 etc." - explicit Composition(std::string fmt); - - // supply an replacement argument starting from %1 - template <typename T> - Composition &arg(const T &obj); - - // specialization to catch strings (C++ and C) - Composition &arg(const std::string &str); - Composition &arg(char const * const cstr); - - // compose and return string - std::string str() const; - - private: - std::ostringstream 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; - - // 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 << obj; - - std::string rep = os.str(); - - if (!rep.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, rep); - } - - os.str(std::string()); - //os.clear(); - ++arg_no; - } - - return *this; - } - - inline Composition &Composition::arg(const std::string &str) - { - /* specialization to ensure that empty strings show up - * in the 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, str); - } - - ++arg_no; - - return *this; - } - - inline Composition &Composition::arg(char const * const cstr) - { - /* specialization to ensure that empty C strings show up - * in the 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, std::string (cstr)); - } - - ++arg_no; - - return *this; - } - - 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; +// the actual composition class - using string::compose is cleaner, so we +// hide it here +class LIBPBD_API Composition +{ +public: + // initialize and prepare format string on the form "text %1 text %2 etc." + explicit Composition(std::string fmt); + + // supply an replacement argument starting from %1 + template <typename T> + Composition &arg(const T &obj); + + // specialization to catch strings (C++ and C) + Composition &arg(const std::string &str); + Composition &arg(char const * const cstr); + + // compose and return string + std::string str() const; + +private: + std::ostringstream 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; + + // 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; } - else if (is_number(fmt[i + 1])) { // aha! a spec! - // save string - output.push_back(fmt.substr(b, i - b)); +} + +// implementation of class Composition +template <typename T> + inline Composition &Composition::arg(const T &obj) + { + os << obj; + + std::string rep = os.str(); + + if (!rep.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, rep); + } + + os.str(std::string()); + //os.clear(); + ++arg_no; + } + + return *this; + } + +inline Composition &Composition::arg(const std::string &str) +{ + /* specialization to ensure that empty strings show up + * in the 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, str); + } + + ++arg_no; + + return *this; +} - int n = 1; // number of digits - int spec_no = 0; +inline Composition &Composition::arg(char const * const cstr) +{ + /* specialization to ensure that empty C strings show up + * in the 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, std::string (cstr)); + } - do { - spec_no += char_to_int(fmt[i + n]); - spec_no *= 10; - ++n; - } while (i + n < fmt.length() && is_number(fmt[i + n])); + ++arg_no; - spec_no /= 10; - output_list::iterator pos = output.end(); - --pos; // safe since we have just inserted a string> + return *this; +} - specs.insert(specification_map::value_type(spec_no, pos)); +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; + } + 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; + + 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> + + specs.insert(specification_map::value_type(spec_no, pos)); + + // jump over spec string + i += n; + b = i; + } + else + ++i; + } + else + ++i; + } - // jump over spec string - i += n; - b = i; + if (i - b > 0) { // add the rest of the string + output.push_back(fmt.substr(b, i - b)); } - 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; - } +} + +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; +} } // now for the real thing(s) -//namespace PBD -//{ - // 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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(); - } -//} +// 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 |