3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Lars Gullik Bjønnes
7 * \author Jean-Marc Lasgouttes
10 * Full author contact details are available in file CREDITS.
15 #include "support/lstrings.h"
17 #include "support/convert.h"
18 #include "support/qstring_helpers.h"
19 #include "support/textutils.h"
21 #include <boost/tokenizer.hpp>
22 #include "support/lassert.h"
34 // Using this allows us to have docstring default arguments in headers
35 // without #include "support/docstring" there.
36 docstring const & empty_docstring()
42 // Using this allows us to have string default arguments in headers
43 // without #include <string>
44 string const & empty_string()
51 * Convert a QChar into a UCS4 character.
52 * This is a hack (it does only make sense for the common part of the UCS4
53 * and UTF16 encodings) and should not be used.
54 * This does only exist because of performance reasons (a real conversion
55 * using iconv is too slow on windows).
57 static inline char_type qchar_to_ucs4(QChar const & qchar)
59 LASSERT(is_utf16(static_cast<char_type>(qchar.unicode())), /**/);
60 return static_cast<char_type>(qchar.unicode());
65 * Convert a UCS4 character into a QChar.
66 * This is a hack (it does only make sense for the common part of the UCS4
67 * and UTF16 encodings) and should not be used.
68 * This does only exist because of performance reasons (a real conversion
69 * using iconv is too slow on windows).
71 static inline QChar const ucs4_to_qchar(char_type const ucs4)
73 LASSERT(is_utf16(ucs4), /**/);
74 return QChar(static_cast<unsigned short>(ucs4));
79 /// Maximum valid UCS4 code point
80 char_type const ucs4_max = 0x10ffff;
84 bool isLetterChar(char_type c)
88 // outside the UCS4 range
90 // assume that all non-utf16 characters are letters
93 return ucs4_to_qchar(c).isLetter();
97 bool isLower(char_type c)
101 return ucs4_to_qchar(c).isLower();
105 bool isAlphaASCII(char_type c)
107 return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
111 bool isPrintable(char_type c)
115 // outside the UCS4 range
117 // assume that all non-utf16 characters are printable
120 return ucs4_to_qchar(c).isPrint();
124 bool isPrintableNonspace(char_type c)
128 // outside the UCS4 range
130 // assume that all non-utf16 characters are printable and
134 QChar const qc = ucs4_to_qchar(c);
135 return qc.isPrint() && !qc.isSpace();
139 bool isSpace(char_type c)
142 // assume that no non-utf16 character is a space
143 // c outside the UCS4 range is catched as well
146 QChar const qc = ucs4_to_qchar(c);
151 bool isDigit(char_type c)
154 // assume that no non-utf16 character is a digit
155 // c outside the UCS4 range is catched as well
157 return ucs4_to_qchar(c).isDigit();
161 bool isDigitASCII(char_type c)
163 return '0' <= c && c <= '9';
168 int compare_no_case(docstring const & s, docstring const & s2)
170 docstring::const_iterator p = s.begin();
171 docstring::const_iterator p2 = s2.begin();
173 while (p != s.end() && p2 != s2.end()) {
174 char_type const lc1 = lowercase(*p);
175 char_type const lc2 = lowercase(*p2);
177 return (lc1 < lc2) ? -1 : 1;
182 if (s.size() == s2.size())
184 if (s.size() < s2.size())
192 template<typename Char>
193 Char ascii_tolower(Char c) {
194 if (c >= 'A' && c <= 'Z')
195 return c - 'A' + 'a';
202 int compare_ascii_no_case(string const & s, string const & s2)
204 string::const_iterator p = s.begin();
205 string::const_iterator p2 = s2.begin();
207 while (p != s.end() && p2 != s2.end()) {
208 int const lc1 = ascii_tolower(*p);
209 int const lc2 = ascii_tolower(*p2);
211 return (lc1 < lc2) ? -1 : 1;
216 if (s.size() == s2.size())
218 if (s.size() < s2.size())
224 int compare_ascii_no_case(docstring const & s, docstring const & s2)
226 docstring::const_iterator p = s.begin();
227 docstring::const_iterator p2 = s2.begin();
229 while (p != s.end() && p2 != s2.end()) {
230 char_type const lc1 = ascii_tolower(*p);
231 char_type const lc2 = ascii_tolower(*p2);
233 return (lc1 < lc2) ? -1 : 1;
238 if (s.size() == s2.size())
240 if (s.size() < s2.size())
246 bool isStrInt(string const & str)
251 // Remove leading and trailing white space chars.
252 string const tmpstr = trim(str);
256 string::const_iterator cit = tmpstr.begin();
260 string::const_iterator end = tmpstr.end();
261 for (; cit != end; ++cit)
262 if (!isdigit((*cit)))
269 bool isStrUnsignedInt(string const & str)
274 // Remove leading and trailing white space chars.
275 string const tmpstr = trim(str);
279 string::const_iterator cit = tmpstr.begin();
280 string::const_iterator end = tmpstr.end();
281 for (; cit != end; ++cit)
282 if (!isdigit((*cit)))
289 bool isStrDbl(string const & str)
294 // Remove leading and trailing white space chars.
295 string const tmpstr = trim(str);
298 // if (tmpstr.count('.') > 1) return false;
300 string::const_iterator cit = tmpstr.begin();
301 bool found_dot = false;
304 string::const_iterator end = tmpstr.end();
305 for (; cit != end; ++cit) {
306 if (!isdigit(*cit) && *cit != '.')
318 bool hasDigit(docstring const & str)
323 docstring::const_iterator cit = str.begin();
324 docstring::const_iterator const end = str.end();
325 for (; cit != end; ++cit) {
335 static bool isHexChar(char_type c)
347 c == 'a' || c == 'A' ||
348 c == 'b' || c == 'B' ||
349 c == 'c' || c == 'C' ||
350 c == 'd' || c == 'D' ||
351 c == 'e' || c == 'E' ||
352 c == 'f' || c == 'F';
356 bool isHex(docstring const & str)
360 if (str.length() > 2 && str[0] == '0' &&
361 (str[1] == 'x' || str[1] == 'X'))
364 int const len = str.length();
366 for (; index < len; ++index) {
367 if (!isHexChar(str[index]))
374 int hexToInt(docstring const & str)
376 string s = to_ascii(str);
378 sscanf(s.c_str(), "%x", &h);
383 bool isAscii(docstring const & str)
385 int const len = str.length();
386 for (int i = 0; i < len; ++i)
393 bool isAscii(string const & str)
395 int const len = str.length();
396 for (int i = 0; i < len; ++i)
397 if (static_cast<unsigned char>(str[i]) >= 0x80)
403 char lowercase(char c)
405 LASSERT(static_cast<unsigned char>(c) < 0x80, /**/);
406 return char(tolower(c));
410 char uppercase(char c)
412 LASSERT(static_cast<unsigned char>(c) < 0x80, /**/);
413 return char(toupper(c));
417 char_type lowercase(char_type c)
420 // We don't know how to lowercase a non-utf16 char
422 return qchar_to_ucs4(ucs4_to_qchar(c).toLower());
426 char_type uppercase(char_type c)
429 // We don't know how to uppercase a non-utf16 char
431 return qchar_to_ucs4(ucs4_to_qchar(c).toUpper());
437 // since we cannot use tolower and toupper directly in the
438 // calls to transform yet, we use these helper clases. (Lgb)
440 struct local_lowercase {
441 char_type operator()(char_type c) const {
443 // We don't know how to lowercase a non-utf16 char
445 return qchar_to_ucs4(ucs4_to_qchar(c).toLower());
449 struct local_uppercase {
450 char_type operator()(char_type c) const {
452 // We don't know how to uppercase a non-utf16 char
454 return qchar_to_ucs4(ucs4_to_qchar(c).toUpper());
458 template<typename Char> struct local_ascii_lowercase {
459 Char operator()(Char c) const { return ascii_tolower(c); }
462 } // end of anon namespace
464 docstring const lowercase(docstring const & a)
467 transform(tmp.begin(), tmp.end(), tmp.begin(), local_lowercase());
472 docstring const uppercase(docstring const & a)
475 transform(tmp.begin(), tmp.end(), tmp.begin(), local_uppercase());
480 string const ascii_lowercase(string const & a)
483 transform(tmp.begin(), tmp.end(), tmp.begin(),
484 local_ascii_lowercase<char>());
489 docstring const ascii_lowercase(docstring const & a)
492 transform(tmp.begin(), tmp.end(), tmp.begin(),
493 local_ascii_lowercase<char_type>());
498 bool prefixIs(docstring const & a, char_type c)
506 bool prefixIs(string const & a, string const & pre)
508 size_t const prelen = pre.length();
509 size_t const alen = a.length();
510 return prelen <= alen && !a.empty() && a.compare(0, prelen, pre) == 0;
514 bool prefixIs(docstring const & a, docstring const & pre)
516 size_t const prelen = pre.length();
517 size_t const alen = a.length();
518 return prelen <= alen && !a.empty() && a.compare(0, prelen, pre) == 0;
522 bool suffixIs(string const & a, char c)
526 return a[a.length() - 1] == c;
530 bool suffixIs(docstring const & a, char_type c)
534 return a[a.length() - 1] == c;
538 bool suffixIs(string const & a, string const & suf)
540 size_t const suflen = suf.length();
541 size_t const alen = a.length();
542 return suflen <= alen && a.compare(alen - suflen, suflen, suf) == 0;
546 bool suffixIs(docstring const & a, docstring const & suf)
548 size_t const suflen = suf.length();
549 size_t const alen = a.length();
550 return suflen <= alen && a.compare(alen - suflen, suflen, suf) == 0;
554 bool containsOnly(string const & s, string const & cset)
556 return s.find_first_not_of(cset) == string::npos;
560 // ale970405+lasgoutt-970425
561 // rewritten to use new string (Lgb)
562 string const token(string const & a, char delim, int n)
570 // Find delimiter or end of string
572 if ((i = a.find(delim, i)) == string::npos)
578 // i is now the n'th delim (or string::npos)
579 if (i == string::npos)
582 k = a.find(delim, i);
583 // k is now the n'th + 1 delim (or string::npos)
585 return a.substr(i, k - i);
589 docstring const token(docstring const & a, char_type delim, int n)
597 // Find delimiter or end of string
599 if ((i = a.find(delim, i)) == docstring::npos)
605 // i is now the n'th delim (or string::npos)
606 if (i == docstring::npos)
609 k = a.find(delim, i);
610 // k is now the n'th + 1 delim (or string::npos)
612 return a.substr(i, k - i);
616 // this could probably be faster and/or cleaner, but it seems to work (JMarc)
617 // rewritten to use new string (Lgb)
618 int tokenPos(string const & a, char delim, string const & tok)
624 while (!str.empty()) {
625 str = split(str, tmptok, delim);
634 // this could probably be faster and/or cleaner, but it seems to work (JMarc)
635 // rewritten to use new string (Lgb)
636 int tokenPos(docstring const & a, char_type delim, docstring const & tok)
642 while (!str.empty()) {
643 str = split(str, tmptok, delim);
654 /// Substitute all \a oldchar with \a newchar
655 template<typename Ch> inline
656 basic_string<Ch> const subst_char(basic_string<Ch> const & a,
657 Ch oldchar, Ch newchar)
659 typedef basic_string<Ch> String;
661 typename String::iterator lit = tmp.begin();
662 typename String::iterator end = tmp.end();
663 for (; lit != end; ++lit)
664 if ((*lit) == oldchar)
670 /// Substitute all \a oldchar with \a newchar
671 docstring const subst_char(docstring const & a,
672 docstring::value_type oldchar, docstring::value_type newchar)
675 docstring::iterator lit = tmp.begin();
676 docstring::iterator end = tmp.end();
677 for (; lit != end; ++lit)
678 if ((*lit) == oldchar)
684 /// substitutes all instances of \a oldstr with \a newstr
685 template<typename String> inline
686 String const subst_string(String const & a,
687 String const & oldstr, String const & newstr)
689 LASSERT(!oldstr.empty(), /**/);
692 size_t const olen = oldstr.length();
693 while ((i = lstr.find(oldstr, i)) != string::npos) {
694 lstr.replace(i, olen, newstr);
695 i += newstr.length(); // We need to be sure that we dont
696 // use the same i over and over again.
702 docstring const subst_string(docstring const & a,
703 docstring const & oldstr, docstring const & newstr)
705 LASSERT(!oldstr.empty(), /**/);
708 size_t const olen = oldstr.length();
709 while ((i = lstr.find(oldstr, i)) != string::npos) {
710 lstr.replace(i, olen, newstr);
711 i += newstr.length(); // We need to be sure that we dont
712 // use the same i over and over again.
720 string const subst(string const & a, char oldchar, char newchar)
722 return subst_char(a, oldchar, newchar);
726 docstring const subst(docstring const & a,
727 char_type oldchar, char_type newchar)
729 return subst_char(a, oldchar, newchar);
733 string const subst(string const & a,
734 string const & oldstr, string const & newstr)
736 return subst_string(a, oldstr, newstr);
740 docstring const subst(docstring const & a,
741 docstring const & oldstr, docstring const & newstr)
743 return subst_string(a, oldstr, newstr);
747 /// Count all occurences of char \a chr inside \a str
748 int count_char(docstring const & str, docstring::value_type chr)
751 docstring::const_iterator lit = str.begin();
752 docstring::const_iterator end = str.end();
753 for (; lit != end; ++lit)
760 docstring const trim(docstring const & a, char const * p)
764 if (a.empty() || !*p)
767 docstring s = from_ascii(p);
768 size_t r = a.find_last_not_of(s);
769 size_t l = a.find_first_not_of(s);
771 // Is this the minimal test? (lgb)
772 if (r == docstring::npos && l == docstring::npos)
775 return a.substr(l, r - l + 1);
779 string const trim(string const & a, char const * p)
783 if (a.empty() || !*p)
786 size_t r = a.find_last_not_of(p);
787 size_t l = a.find_first_not_of(p);
789 // Is this the minimal test? (lgb)
790 if (r == string::npos && l == string::npos)
793 return a.substr(l, r - l + 1);
797 string const rtrim(string const & a, char const * p)
801 if (a.empty() || !*p)
804 size_t r = a.find_last_not_of(p);
806 // Is this test really needed? (Lgb)
807 if (r == string::npos)
810 return a.substr(0, r + 1);
814 docstring const rtrim(docstring const & a, char const * p)
818 if (a.empty() || !*p)
821 size_t r = a.find_last_not_of(from_ascii(p));
823 // Is this test really needed? (Lgb)
824 if (r == docstring::npos)
827 return a.substr(0, r + 1);
831 string const ltrim(string const & a, char const * p)
834 if (a.empty() || !*p)
836 size_t l = a.find_first_not_of(p);
837 if (l == string::npos)
839 return a.substr(l, string::npos);
843 docstring const ltrim(docstring const & a, char const * p)
846 if (a.empty() || !*p)
848 size_t l = a.find_first_not_of(from_ascii(p));
849 if (l == docstring::npos)
851 return a.substr(l, docstring::npos);
856 template<typename String, typename Char> inline
857 String const doSplit(String const & a, String & piece, Char delim)
860 size_t i = a.find(delim);
861 if (i == a.length() - 1) {
862 piece = a.substr(0, i);
863 } else if (i != String::npos) {
864 piece = a.substr(0, i);
865 tmp = a.substr(i + 1);
868 tmp = a.substr(i + 1);
875 template<typename Char> inline
876 docstring const doSplit(docstring const & a, docstring & piece, Char delim)
879 size_t i = a.find(delim);
880 if (i == a.length() - 1) {
881 piece = a.substr(0, i);
882 } else if (i != docstring::npos) {
883 piece = a.substr(0, i);
884 tmp = a.substr(i + 1);
887 tmp = a.substr(i + 1);
897 string const split(string const & a, string & piece, char delim)
899 return doSplit(a, piece, delim);
903 docstring const split(docstring const & a, docstring & piece, char_type delim)
905 return doSplit(a, piece, delim);
909 string const split(string const & a, char delim)
912 size_t i = a.find(delim);
913 if (i != string::npos) // found delim
914 tmp = a.substr(i + 1);
920 string const rsplit(string const & a, string & piece, char delim)
923 size_t i = a.rfind(delim);
924 if (i != string::npos) { // delimiter was found
925 piece = a.substr(0, i);
926 tmp = a.substr(i + 1);
927 } else { // delimiter was not found
934 docstring const rsplit(docstring const & a, char_type delim)
937 size_t i = a.rfind(delim);
938 if (i != string::npos)
939 tmp = a.substr(i + 1);
944 docstring const escape(docstring const & lab)
946 char_type hexdigit[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
947 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
949 for (size_t i = 0; i < lab.length(); ++i) {
950 char_type c = lab[i];
951 if (c >= 128 || c == '=' || c == '%') {
952 // Although char_type is a 32 bit type we know that
953 // UCS4 occupies only 21 bits, so we don't need to
954 // encode bigger values. Test for 2^24 because we
955 // can encode that with the 6 hex digits that are
956 // needed for 21 bits anyway.
957 LASSERT(c < (1 << 24), /**/);
959 enc += hexdigit[(c>>20) & 15];
960 enc += hexdigit[(c>>16) & 15];
961 enc += hexdigit[(c>>12) & 15];
962 enc += hexdigit[(c>> 8) & 15];
963 enc += hexdigit[(c>> 4) & 15];
964 enc += hexdigit[ c & 15];
975 // this doesn't check whether str is empty, so do that first.
976 vector<docstring> wrapToVec(docstring const & str, int ind,
979 docstring s = trim(str);
981 return vector<docstring>();
985 indent.insert(0, -ind, ' ');
988 s.insert(0, ind, ' ');
990 vector<docstring> retval;
991 while (s.size() > width) {
992 // find the last space within the first 'width' chars
993 size_t const i = s.find_last_of(' ', width - 1);
994 if (i == docstring::npos || i <= size_t(ind)) {
996 s = s.substr(0, width - 3) + "...";
999 retval.push_back(s.substr(0, i));
1000 s = indent + s.substr(i);
1001 ind = indent.size();
1004 retval.push_back(s);
1011 docstring wrap(docstring const & str, int const ind, size_t const width)
1013 docstring s = trim(str);
1017 vector<docstring> const svec = wrapToVec(str, ind, width);
1018 return getStringFromVector(svec, from_ascii("\n"));
1022 docstring wrapParas(docstring const & str, int const indent,
1023 size_t const width, size_t const maxlines)
1028 vector<docstring> const pars = getVectorFromString(str, from_ascii("\n"), true);
1029 vector<docstring> retval;
1031 vector<docstring>::const_iterator it = pars.begin();
1032 vector<docstring>::const_iterator const en = pars.end();
1033 for (; it != en; ++it) {
1034 vector<docstring> tmp = wrapToVec(*it, indent, width);
1035 size_t const nlines = tmp.size();
1038 size_t const curlines = retval.size();
1039 if (maxlines > 0 && curlines + nlines >= maxlines) {
1040 tmp.resize(maxlines - curlines - 1);
1041 tmp.push_back(from_ascii("..."));
1043 retval.insert(retval.end(), tmp.begin(), tmp.end());
1044 if (maxlines > 0 && retval.size() >= maxlines)
1047 return getStringFromVector(retval, from_ascii("\n"));
1053 template<typename String> vector<String> const
1054 getVectorFromStringT(String const & str, String const & delim, bool keepempty)
1056 // Lars would like this code to go, but for now his replacement (below)
1057 // doesn't fullfil the same function. I have, therefore, reactivated the
1058 // old code for now. Angus 11 Nov 2002.
1063 String keys = rtrim(str);
1065 size_t const idx = keys.find(delim);
1066 if (idx == String::npos) {
1067 vec.push_back(ltrim(keys));
1070 String const key = trim(keys.substr(0, idx));
1071 if (!key.empty() || keepempty)
1073 size_t const start = idx + delim.size();
1074 keys = keys.substr(start);
1078 typedef boost::char_separator<typename String::value_type> Separator;
1079 typedef boost::tokenizer<Separator, typename String::const_iterator, String> Tokenizer;
1080 Separator sep(delim.c_str());
1081 Tokenizer tokens(str, sep);
1082 return vector<String>(tokens.begin(), tokens.end());
1087 template<typename String> const String
1088 getStringFromVector(vector<String> const & vec, String const & delim)
1091 typename vector<String>::const_iterator it = vec.begin();
1092 typename vector<String>::const_iterator en = vec.end();
1093 for (; it != en; ++it) {
1094 String item = trim(*it);
1107 vector<string> const getVectorFromString(string const & str,
1108 string const & delim,
1111 return getVectorFromStringT<string>(str, delim, keepempty);
1115 vector<docstring> const getVectorFromString(docstring const & str,
1116 docstring const & delim,
1119 return getVectorFromStringT<docstring>(str, delim, keepempty);
1123 string const getStringFromVector(vector<string> const & vec,
1124 string const & delim)
1126 return getStringFromVector<string>(vec, delim);
1130 docstring const getStringFromVector(vector<docstring> const & vec,
1131 docstring const & delim)
1133 return getStringFromVector<docstring>(vec, delim);
1137 int findToken(char const * const str[], string const & search_token)
1141 while (str[i][0] && str[i] != search_token)
1150 docstring bformat(docstring const & fmt, int arg1)
1152 LASSERT(contains(fmt, from_ascii("%1$d")), /**/);
1153 docstring const str = subst(fmt, from_ascii("%1$d"), convert<docstring>(arg1));
1154 return subst(str, from_ascii("%%"), from_ascii("%"));
1159 docstring bformat(docstring const & fmt, long arg1)
1161 LASSERT(contains(fmt, from_ascii("%1$d")), /**/);
1162 docstring const str = subst(fmt, from_ascii("%1$d"), convert<docstring>(arg1));
1163 return subst(str, from_ascii("%%"), from_ascii("%"));
1168 docstring bformat(docstring const & fmt, unsigned int arg1)
1170 LASSERT(contains(fmt, from_ascii("%1$d")), /**/);
1171 docstring const str = subst(fmt, from_ascii("%1$d"), convert<docstring>(arg1));
1172 return subst(str, from_ascii("%%"), from_ascii("%"));
1177 docstring bformat(docstring const & fmt, docstring arg1)
1179 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1180 docstring const str = subst(fmt, from_ascii("%1$s"), arg1);
1181 return subst(str, from_ascii("%%"), from_ascii("%"));
1186 docstring bformat(docstring const & fmt, char * arg1)
1188 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1189 docstring const str = subst(fmt, from_ascii("%1$s"), from_ascii(arg1));
1190 return subst(str, from_ascii("%%"), from_ascii("%"));
1195 docstring bformat(docstring const & fmt, docstring arg1, docstring arg2)
1197 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1198 LASSERT(contains(fmt, from_ascii("%2$s")), /**/);
1199 docstring str = subst(fmt, from_ascii("%1$s"), arg1);
1200 str = subst(str, from_ascii("%2$s"), arg2);
1201 return subst(str, from_ascii("%%"), from_ascii("%"));
1206 docstring bformat(docstring const & fmt, docstring arg1, int arg2)
1208 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1209 LASSERT(contains(fmt, from_ascii("%2$d")), /**/);
1210 docstring str = subst(fmt, from_ascii("%1$s"), arg1);
1211 str = subst(str, from_ascii("%2$d"), convert<docstring>(arg2));
1212 return subst(str, from_ascii("%%"), from_ascii("%"));
1217 docstring bformat(docstring const & fmt, char const * arg1, docstring arg2)
1219 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1220 LASSERT(contains(fmt, from_ascii("%2$s")), /**/);
1221 docstring str = subst(fmt, from_ascii("%1$s"), from_ascii(arg1));
1222 str = subst(fmt, from_ascii("%2$s"), arg2);
1223 return subst(str, from_ascii("%%"), from_ascii("%"));
1228 docstring bformat(docstring const & fmt, int arg1, int arg2)
1230 LASSERT(contains(fmt, from_ascii("%1$d")), /**/);
1231 LASSERT(contains(fmt, from_ascii("%2$d")), /**/);
1232 docstring str = subst(fmt, from_ascii("%1$d"), convert<docstring>(arg1));
1233 str = subst(str, from_ascii("%2$d"), convert<docstring>(arg2));
1234 return subst(str, from_ascii("%%"), from_ascii("%"));
1239 docstring bformat(docstring const & fmt, docstring arg1, docstring arg2, docstring arg3)
1241 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1242 LASSERT(contains(fmt, from_ascii("%2$s")), /**/);
1243 LASSERT(contains(fmt, from_ascii("%3$s")), /**/);
1244 docstring str = subst(fmt, from_ascii("%1$s"), arg1);
1245 str = subst(str, from_ascii("%2$s"), arg2);
1246 str = subst(str, from_ascii("%3$s"), arg3);
1247 return subst(str, from_ascii("%%"), from_ascii("%"));
1252 docstring bformat(docstring const & fmt,
1253 docstring arg1, docstring arg2, docstring arg3, docstring arg4)
1255 LASSERT(contains(fmt, from_ascii("%1$s")), /**/);
1256 LASSERT(contains(fmt, from_ascii("%2$s")), /**/);
1257 LASSERT(contains(fmt, from_ascii("%3$s")), /**/);
1258 LASSERT(contains(fmt, from_ascii("%4$s")), /**/);
1259 docstring str = subst(fmt, from_ascii("%1$s"), arg1);
1260 str = subst(str, from_ascii("%2$s"), arg2);
1261 str = subst(str, from_ascii("%3$s"), arg3);
1262 str = subst(str, from_ascii("%4$s"), arg4);
1263 return subst(str, from_ascii("%%"), from_ascii("%"));
1266 } // namespace support