mirror of
https://github.com/boostorg/regex.git
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91 lines
3.7 KiB
C++
91 lines
3.7 KiB
C++
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <string>
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#include <iterator>
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#include <regex>
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#include <fileiter.h>
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// purpose:
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// takes the contents of a file and transform to
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// syntax highlighted code in html format
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regex e1, e2;
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extern const char* expression_text;
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extern const char* format_string;
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extern const char* pre_expression;
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extern const char* pre_format;
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extern const char* header_text;
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extern const char* footer_text;
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int main(int argc, const char** argv)
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{
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e1.set_expression(expression_text);
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e2.set_expression(pre_expression);
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for(int i = 1; i < argc; ++i)
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{
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std::cout << "Processing file " << argv[i] << std::endl;
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mapfile in(argv[i]);
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std::string out_name(std::string(argv[i]) + std::string(".htm"));
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std::ofstream os(out_name.c_str());
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os << header_text;
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// strip '<' and '>' first by outputting to a
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// temporary string stream
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std::ostringstream t(std::ios::out | std::ios::binary);
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std::ostream_iterator<char, char> oi(t);
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reg_merge(oi, in.begin(), in.end(), e2, pre_format, true);
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// then output to final output stream
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// adding syntax highlighting:
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std::string s(t.str());
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std::ostream_iterator<char, char> out(os);
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reg_merge(out, s.begin(), s.end(), e1, format_string, true);
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os << footer_text;
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}
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return 0;
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}
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extern const char* pre_expression = "(<)|(>)|\\r";
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extern const char* pre_format = "(?1<)(?2>)";
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const char* expression_text = // preprocessor directives: index 1
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"(^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*)|"
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// comment: index 3
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"(//[^\\n]*|/\\*([^*]|\\*+[^*/])*\\*+/)|"
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// literals: index 5
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"\\<([+-]?((0x[[:xdigit:]]+)|(([[:digit:]]*\\.)?[[:digit:]]+([eE][+-]?[[:digit:]]+)?))u?((int(8|16|32|64))|L)?)\\>|"
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// string literals: index 14
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"('([^\\\\']|\\\\.)*'|\"([^\\\\\"]|\\\\.)*\")|"
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// keywords: index 17
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"\\<(__asm|__cdecl|__declspec|__export|__far16|__fastcall|__fortran|__import"
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"|__pascal|__rtti|__stdcall|_asm|_cdecl|__except|_export|_far16|_fastcall"
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"|__finally|_fortran|_import|_pascal|_stdcall|__thread|__try|asm|auto|bool"
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"|break|case|catch|cdecl|char|class|const|const_cast|continue|default|delete"
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"|do|double|dynamic_cast|else|enum|explicit|extern|false|float|for|friend|goto"
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"|if|inline|int|long|mutable|namespace|new|operator|pascal|private|protected"
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"|public|register|reinterpret_cast|return|short|signed|sizeof|static|static_cast"
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"|struct|switch|template|this|throw|true|try|typedef|typeid|typename|union|unsigned"
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"|using|virtual|void|volatile|wchar_t|while)\\>"
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;
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const char* format_string = "(?1<font color=\"#008040\">$&</font>)"
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"(?3<I><font color=\"#000080\">$&</font></I>)"
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"(?5<font color=\"#0000A0\">$&</font>)"
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"(?14<font color=\"#0000FF\">$&</font>)"
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"(?17<B>$&</B>)";
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const char* header_text = "<HTML>\n<HEAD>\n"
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"<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=windows-1252\">\n"
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"</HEAD>\n"
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"<BODY LINK=\"#0000ff\" VLINK=\"#800080\" BGCOLOR=\"#ffff99\">\n"
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"<PARA> </PARA>\n<PRE>";
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const char* footer_text = "</PRE>\n</BODY>\n\n";
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