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1 | /* |
2 | * | |
3 | * Copyright (c) 1998-2002 | |
4 | * John Maddock | |
5 | * | |
6 | * Use, modification and distribution are subject to the | |
7 | * Boost Software License, Version 1.0. (See accompanying file | |
8 | * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | * | |
10 | */ | |
11 | ||
12 | /* | |
13 | * LOCATION: see http://www.boost.org for most recent version. | |
14 | * FILE regex_merge_example.cpp | |
15 | * VERSION see <boost/version.hpp> | |
16 | * DESCRIPTION: regex_merge example: | |
17 | * converts a C++ file to syntax highlighted HTML. | |
18 | */ | |
19 | ||
20 | #include <iostream> | |
21 | #include <fstream> | |
22 | #include <sstream> | |
23 | #include <string> | |
24 | #include <iterator> | |
25 | #include <boost/regex.hpp> | |
26 | #include <fstream> | |
27 | #include <iostream> | |
28 | ||
29 | // purpose: | |
30 | // takes the contents of a file and transform to | |
31 | // syntax highlighted code in html format | |
32 | ||
33 | boost::regex e1, e2; | |
34 | extern const char* expression_text; | |
35 | extern const char* format_string; | |
36 | extern const char* pre_expression; | |
37 | extern const char* pre_format; | |
38 | extern const char* header_text; | |
39 | extern const char* footer_text; | |
40 | ||
41 | void load_file(std::string& s, std::istream& is) | |
42 | { | |
43 | s.erase(); | |
44 | if(is.bad()) return; | |
45 | s.reserve(static_cast<std::string::size_type>(is.rdbuf()->in_avail())); | |
46 | char c; | |
47 | while(is.get(c)) | |
48 | { | |
49 | if(s.capacity() == s.size()) | |
50 | s.reserve(s.capacity() * 3); | |
51 | s.append(1, c); | |
52 | } | |
53 | } | |
54 | ||
55 | int main(int argc, const char** argv) | |
56 | { | |
57 | try{ | |
58 | e1.assign(expression_text); | |
59 | e2.assign(pre_expression); | |
60 | for(int i = 1; i < argc; ++i) | |
61 | { | |
62 | std::cout << "Processing file " << argv[i] << std::endl; | |
63 | std::ifstream fs(argv[i]); | |
64 | std::string in; | |
65 | load_file(in, fs); | |
66 | fs.close(); | |
67 | std::string out_name = std::string(argv[i]) + std::string(".htm"); | |
68 | std::ofstream os(out_name.c_str()); | |
69 | os << header_text; | |
70 | // strip '<' and '>' first by outputting to a | |
71 | // temporary string stream | |
72 | std::ostringstream t(std::ios::out | std::ios::binary); | |
73 | std::ostream_iterator<char> oi(t); | |
74 | boost::regex_merge(oi, in.begin(), in.end(), e2, pre_format, boost::match_default | boost::format_all); | |
75 | // then output to final output stream | |
76 | // adding syntax highlighting: | |
77 | std::string s(t.str()); | |
78 | std::ostream_iterator<char> out(os); | |
79 | boost::regex_merge(out, s.begin(), s.end(), e1, format_string, boost::match_default | boost::format_all); | |
80 | os << footer_text; | |
81 | os.close(); | |
82 | } | |
83 | } | |
84 | catch(...) | |
85 | { return -1; } | |
86 | return 0; | |
87 | } | |
88 | ||
89 | const char* pre_expression = "(<)|(>)|\\r"; | |
90 | const char* pre_format = "(?1<)(?2>)"; | |
91 | ||
92 | ||
93 | const char* expression_text = // preprocessor directives: index 1 | |
94 | "(^[[:blank:]]*#(?:[^\\\\\\n]|\\\\[^\\n[:punct:][:word:]]*[\\n[:punct:][:word:]])*)|" | |
95 | // comment: index 2 | |
96 | "(//[^\\n]*|/\\*.*?\\*/)|" | |
97 | // literals: index 3 | |
98 | "\\<([+-]?(?:(?:0x[[:xdigit:]]+)|(?:(?:[[:digit:]]*\\.)?[[:digit:]]+(?:[eE][+-]?[[:digit:]]+)?))u?(?:(?:int(?:8|16|32|64))|L)?)\\>|" | |
99 | // string literals: index 4 | |
100 | "('(?:[^\\\\']|\\\\.)*'|\"(?:[^\\\\\"]|\\\\.)*\")|" | |
101 | // keywords: index 5 | |
102 | "\\<(__asm|__cdecl|__declspec|__export|__far16|__fastcall|__fortran|__import" | |
103 | "|__pascal|__rtti|__stdcall|_asm|_cdecl|__except|_export|_far16|_fastcall" | |
104 | "|__finally|_fortran|_import|_pascal|_stdcall|__thread|__try|asm|auto|bool" | |
105 | "|break|case|catch|cdecl|char|class|const|const_cast|continue|default|delete" | |
106 | "|do|double|dynamic_cast|else|enum|explicit|extern|false|float|for|friend|goto" | |
107 | "|if|inline|int|long|mutable|namespace|new|operator|pascal|private|protected" | |
108 | "|public|register|reinterpret_cast|return|short|signed|sizeof|static|static_cast" | |
109 | "|struct|switch|template|this|throw|true|try|typedef|typeid|typename|union|unsigned" | |
110 | "|using|virtual|void|volatile|wchar_t|while)\\>" | |
111 | ; | |
112 | ||
113 | const char* format_string = "(?1<font color=\"#008040\">$&</font>)" | |
114 | "(?2<I><font color=\"#000080\">$&</font></I>)" | |
115 | "(?3<font color=\"#0000A0\">$&</font>)" | |
116 | "(?4<font color=\"#0000FF\">$&</font>)" | |
117 | "(?5<B>$&</B>)"; | |
118 | ||
119 | const char* header_text = "<HTML>\n<HEAD>\n" | |
120 | "<TITLE>Auto-generated html formated source</TITLE>\n" | |
121 | "<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=windows-1252\">\n" | |
122 | "</HEAD>\n" | |
123 | "<BODY LINK=\"#0000ff\" VLINK=\"#800080\" BGCOLOR=\"#ffffff\">\n" | |
124 | "<P> </P>\n<PRE>"; | |
125 | ||
126 | const char* footer_text = "</PRE>\n</BODY>\n\n"; | |
127 | ||
128 | ||
129 | ||
130 | ||
131 | ||
132 | ||
133 | ||
134 | ||
135 | ||
136 | ||
137 |