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/*
CopyRight (C) 1999, Dmitry Obukhov, dso@usa.net
mailto: dso@usa.net
http://www.EmbeddedStuff.com
----------------------------------------------
Last modified 6 Apr 97
----------------------------------------------
Converts C (C++) source to HTML code fragment
with syntax highlighting.
Since program written for personal purpose
the <TABLE> tags generated. This is optional
page format specific thing.
Usage: CTHM <input_file>. All output is done
to STDOUTPUT, error messages to STDERR.
For HTML fragment generation:
CHTM file.c > file.htm
- Some input convertion required to use this
code as CGI module. Will be done soon.
- Optimization required for blocks of EOL
comments
*/
#include <stdio.h>
// ------------------- Decoding status values
#define START 0
#define INLINE 1
#define DEFINE 2
// ------------------- Decoding Remark
#define REM1 20
#define REM2 21
#define REM_END 22
#define REM_STAR 23
#define REM_STAR_1 24
#define STRING 25 // String is "like" remark
// ------------------- HTML TAG Generation
#define ON 1
#define OFF 0
// ------------------- HTML TAG type
#define MODE_KEYWORD 0
#define MODE_REMARK 2
#define MODE_REMARK_EOL 4
#define MODE_DEFINE 6
#define MODE_STRING 8
int is_delimeter(char c)
{
int ii=0;
char dlms[] =
"\t\r\n (){}[]+-*/%\"'&|^~:;<>.,";
//--------------------------------
while (dlms[ii])
{
if (c==dlms[ii++]) return 1;
}
return 0;
}
int is_keyword(char * str)
{
char * kwords[] =
{
"asm", "auto",
"break", "case",
"cdecl", "char",
"class", "const",
"continue", "default",
"delete", "do",
"double", "else",
"enum", "extern",
"far", "float",
"for", "friend",
"goto", "huge",
"if", "inline",
"int", "interrupt",
"long", "near",
"new", "operator",
"pascal", "private",
"protected", "public",
"register", "return",
"short", "signed",
"sizeof", "static",
"struct", "switch",
"template", "this",
"typedef", "union",
"unsigned", "virtual",
"void", "volatile",
"while", NULL
};
int ii=0;
int jj;
int check;
while (kwords[ii])
{
jj = 0;
check = 1;
while (kwords[ii][jj] && check)
{
if (str[jj] != kwords[ii][jj])
{
check = 0;
}
jj++;
}
if (check) return 1;
ii++;
}
return 0;
}
void set_mode(int on_off, int mode)
{
char * tags[] =
{
//-------------------- KEYWORD
"<strong>",
"</strong>",
//-------------------- Classic remarks
"<font color=\"#336600\">",
"</font>",
//-------------------- EOL Remarks
"<font color=\"#336600\">",
"</font>",
//-------------------- #DEFINE
"<font color=\"#663300\"><strong>",
"</strong></font>",
//-------------------- "string"
"<font color=\"#0000CC\">",
"</font>",
NULL, NULL
};
fprintf(stdout,tags[mode + 1 - on_off]);
}
void print_char_html(char c)
{
switch (c)
{
case '<':
fprintf(stdout,"<");
break;
case '>':
fprintf(stdout,">");
break;
case '"':
fprintf(stdout,""");
break;
case '&':
fprintf(stdout,"&");
break;
case '|':
fprintf(stdout,"¦");
break;
default:
fprintf(stdout,"%c",c);
}
}
int main(int _argc, char** _argv)
{
FILE *in, *out;
char c;
int mode;
char buf[80];
int bufidx = 0;
int progress = 1;
int echo;
int saved_mode;
int kw;
char tmpc;
char prevc;
if (_argc < 2)
{
fprintf(stderr,
"USAGE: c2html <file>\n");
return 1;
}
if ((in = fopen(_argv[1], "rt")) == NULL)
{
fprintf(stderr,
"Cannot open input file.\n");
return 1;
}
fprintf(stdout, "<pre>");
mode = START;
while (!feof(in) && progress)
{
echo = 1;
prevc = c;
c = fgetc(in);
if (c=='/' && (mode < REM1))
{
saved_mode = mode;
mode = REM1;
}
switch (mode)
{
case REM1:
echo = 0;
mode = REM2;
break;
case REM2:
if (c=='/')
{
if (saved_mode == DEFINE)
{
set_mode(OFF, MODE_DEFINE);
}
mode = REM_END;
set_mode(ON, MODE_REMARK_EOL);
}
else if (c=='*')
{
if (saved_mode == DEFINE)
{
set_mode(OFF, MODE_DEFINE);
}
mode = REM_STAR;
set_mode(ON, MODE_REMARK);
}
else
{
mode = saved_mode;
}
printf("/");
break;
case REM_END:
if (c=='\n')
{
set_mode(OFF, MODE_REMARK_EOL);
}
break;
case REM_STAR:
if (c=='*')
{
mode = REM_STAR_1;
}
break;
case REM_STAR_1:
if (c=='/')
{
mode = INLINE;
fprintf(stdout,"/");
echo = 0;
set_mode(OFF, MODE_REMARK);
}
else mode = REM_STAR;
break;
case START:
if (c=='#')
{
mode = DEFINE;
set_mode(ON, MODE_DEFINE);
break;
}
else if (c==' ') break;
mode = INLINE;
// and continue in next case
case INLINE:
if (c=='"' && //
prevc != 0x27 && //
prevc != '\\') //
{
set_mode(ON, MODE_STRING);
mode = STRING;
}
break;
case STRING:
if (c=='"' && prevc != '\\')
{
print_char_html('"');
set_mode(OFF, MODE_STRING);
echo = 0;
mode = INLINE;
}
break;
case DEFINE:
if (c=='\n')
{
set_mode(OFF, MODE_DEFINE);
}
break;
}
if (echo && //
(mode == INLINE || //
(mode!=INLINE && //
bufidx))) //
{
buf[bufidx++] = c;
buf[bufidx] = 0;
if (is_delimeter(c))
{
kw = 0;
if (bufidx>2)
{
kw = is_keyword(buf);
}
if (kw)
{
set_mode(ON, MODE_KEYWORD);
}
tmpc = buf[bufidx-1];
buf[bufidx-1] = 0;
fprintf(stdout,"%s",buf);
if (kw)
{
set_mode(OFF, MODE_KEYWORD);
}
print_char_html(tmpc);
bufidx = 0;
buf[0] = 0;
}
}
else if (echo) print_char_html(c);
if (c=='\n' && mode != REM_STAR)
{
mode = START;
}
}
fclose(in);
fprintf(stdout,"</pre>\n");
fprintf(stdout,
"<!-- == Generated by CHTM convertor -->\n");
fprintf(stdout,
"<!-- == CopyRight (C) 1999, Dmitry Obukhov, dso@usa.net -->\n");
return 0;
}
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