reactos/tools/ms2ps
diff -N ms2ps.cpp
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ ms2ps.cpp 8 Aug 2004 21:40:09 -0000 1.1
@@ -0,0 +1,400 @@
+#include <iostream>
+#include <vector>
+#include <list>
+#include <set>
+#include <map>
+#include <deque>
+#include <ctype.h>
+
+#define MAYBE(x)
+
+using std::string;
+using std::cin;
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::istream;
+
+typedef std::list<std::string> sl_t;
+typedef sl_t::iterator sl_it;
+
+string TRY_TOKEN = "__try";
+string EXCEPT_TOKEN = "__except";
+string FINALLY_TOKEN = "__finally";
+char *c_operators[] = {
+ "{",
+ "}",
+ "(",
+ ")",
+ NULL
+};
+
+int isident( int c ) {
+ return (c != '{') && (c != '}') && (c != '(') && (c != ')') &&
+ (c != '\'') && (c != '\"') && !isspace(c);
+}
+
+bool areinclass( string str, int (*isclass)(int) ) {
+ int i;
+
+ for( i = 0; i < (int)str.size(); i++ )
+ if( !isclass( str[i] ) ) return false;
+
+ return true;
+}
+
+bool areident( string s ) { return areinclass( s, isident ); }
+
+bool isop( string tok ) {
+ int i;
+ for( i = 0; c_operators[i] && tok != c_operators[i]; i++ );
+ if( c_operators[i] ) return true; else return false;
+}
+
+enum fstate { EMPTY, INT, FRAC, EXP };
+
+string generic_match( string tok, string la,
+ bool (*mf)( string ) ) {
+ if( tok.size() < 1 ) return "";
+ if( mf(tok) && !mf(la) ) return tok; else return "";
+}
+
+string match_operator( string tok, string la ) {
+ return generic_match( tok, la, isop );
+}
+
+string match_ident( string tok, string la ) {
+ return generic_match( tok, la, areident );
+}
+
+string match_quoted_const( string tok, string la, char q ) {
+ if( ((tok.size() && tok[0] == q) ||
+ ((tok.size() > 2) && tok[0] == 'L' && tok[1] == q)) &&
+ (tok.rfind(q) == (tok.size() - 1)) ) {
+ if( (tok.rfind("\\") != (tok.size() - 2)) ||
+ (tok.size() > 3 && tok.rfind("\\\\") == (tok.size() - 3)) )
+ return tok;
+ else return "";
+ }
+ else return "";
+}
+
+sl_t snarf_tokens( string line ) {
+ int i;
+ sl_t out;
+ string curtok, la, op, ident, qconst;
+
+ line += " ";
+
+ for( i = 0; i < (int)line.size() - 1; i++ ) {
+ /*cout << "Char [" << line[i] << "] and [" << line[i+1] << "]"
+ << endl; */
+
+ if( (!curtok.size() ||
+ (curtok[0] != '\'' && curtok[0] != '\"')) &&
+ (curtok.size() <= 2 ||
+ curtok[0] != 'L' ||
+ (curtok[1] != '\'' && curtok[1] != '\"')) &&
+ isspace(line[i]) ) {
+ if( curtok.size() ) out.push_back( curtok );
+ curtok = "";
+ continue;
+ }
+
+ curtok.push_back( line[i] );
+
+ la = curtok + line[i+1];
+
+ op = match_operator( curtok, la );
+
+ if( op != "" ) {
+ out.push_back( op MAYBE(+ "O") );
+ curtok = "";
+ continue;
+ }
+
+ if( la != "L\"" && la != "L\'" ) {
+ ident = match_ident( curtok, la );
+
+ if( ident != "" ) {
+ out.push_back( ident MAYBE(+ "I") );
+ curtok = "";
+ continue;
+ }
+ }
+
+ qconst = match_quoted_const( curtok, la, '\'' );
+
+ if( qconst != "" ) {
+ out.push_back( qconst MAYBE(+ "q") );
+ curtok = "";
+ continue;
+ }
+
+ qconst = match_quoted_const( curtok, la, '\"' );
+
+ if( qconst != "" ) {
+ out.push_back( qconst MAYBE(+ "Q") );
+ curtok = "";
+ continue;
+ }
+ }
+
+ return out;
+}
+
+istream &getline_no_comments( istream &is, string &line ) {
+ string buf;
+ int ch;
+ int seen_slash = false;
+
+ while( (ch = is.get()) != -1 ) {
+ if( seen_slash ) {
+ if( ch == '/' ) {
+ do {
+ ch = is.get();
+ } while( ch != -1 && ch != '\n' && ch != '\r' );
+ break;
+ } else if( ch == '*' ) {
+ ch = is.get(); /* Skip one char */
+ do {
+ while( ch != '*' )
+ ch = is.get();
+ ch = is.get();
+ } while( ch != '/' );
+ buf += ' ';
+ } else {
+ buf += '/'; buf += (char)ch;
+ }
+ seen_slash = false;
+ } else {
+ if( ch == '/' ) seen_slash = true;
+ else if( ch == '\r' || ch == '\n' ) break;
+ else buf += (char)ch;
+ }
+ }
+
+ line = buf;
+
+ return is;
+}
+
+bool expand_input( sl_t &tok ) {
+ string line;
+ sl_t new_tokens;
+ bool out = false;
+
+ out = getline_no_comments( cin, line );
+ while( line.size() && isspace( line[0] ) )
+ line = line.substr( 1 );
+ if( line[0] == '#' ) {
+ tok.push_back( line );
+ while( line[line.size()-1] == '\\' ) {
+ getline_no_comments( cin, line );
+ tok.push_back( line );
+ }
+ } else {
+ new_tokens = snarf_tokens( line );
+ tok.splice( tok.end(), new_tokens );
+ }
+
+ return out;
+}
+
+sl_it
+complete_block( sl_it i,
+ sl_it end,
+ string start_ch, string end_ch) {
+ int bc = 1;
+
+ for( i++; i != end && bc; i++ ) {
+ if( *i == start_ch ) bc++;
+ if( *i == end_ch ) bc--;
+ }
+
+ return i;
+}
+
+string makename( string intro ) {
+ static int i = 0;
+ char buf[100];
+
+ sprintf( buf, "%s%d", intro.c_str(), i++ );
+
+ return buf;
+}
+
+void append_block( sl_t &t, sl_it b, sl_it e ) {
+ while( b != e ) {
+ t.push_back( *b );
+ b++;
+ }
+}
+
+void error( sl_t &container, sl_it it, string l ) {
+ int line = 0;
+ for( sl_it i = container.begin(); i != it; i++ )
+ if( (*i)[0] == '#' ) {
+ sscanf( i->substr(1).c_str(), "%d", &line );
+ cerr << "*standard-input*:" << line << ": " << l;
+ }
+}
+
+/* Goal: match and transform one __try { a } __except [ (foo) ] { b }
+ * [ __finally { c } ]
+ *
+ * into
+ *
+ * _SEH_FINALLY(name1) { c }
+ * _SEH_FILTER(name2) { return (foo | EXCEPTION_EXECUTE_HANDLER); }
+ * _SEH_TRY_FILTER_FINALLY(name1,name2) {
+ * a
+ * } _SEH_HANDLE {
+ * b
+ * } _SEH_END;
+ */
+
+void handle_try( sl_t &container, sl_it try_kw, sl_it end ) {
+ string temp;
+ sl_t pseh_clause, temp_tok;
+ string finally_name, filter_name;
+ sl_it try_block, try_block_end, except_kw, paren, end_paren,
+ except_block, except_block_end, todelete,
+ finally_kw, finally_block, finally_block_end, clause_end;
+
+ try_block = try_kw;
+ try_block++;
+ try_block_end = complete_block( try_block, end, "{", "}" );
+
+ if( try_block_end == end )
+ error( container, try_block, "unclosed try block");
+
+ except_kw = try_block_end;
+
+ if( *except_kw == FINALLY_TOKEN ) {
+ finally_kw = except_kw;
+ except_kw = end;
+ paren = end;
+ end_paren = end;
+ except_block = end;
+ except_block_end = end;
+ } else if( *except_kw == EXCEPT_TOKEN ) {
+ paren = except_kw;
+ paren++;
+ if( *paren == "(" ) {
+ end_paren = complete_block( paren, end, "(", ")" );
+ except_block = end_paren;
+ } else {
+ except_block = paren;
+ paren = end;
+ end_paren = end;
+ }
+ except_block_end = complete_block( except_block, end, "{", "}" );
+ finally_kw = except_block_end;
+ } else {
+ except_kw = paren = end_paren = except_block = except_block_end =
+ finally_kw = finally_block = finally_block_end = end;
+ }
+
+ if( finally_kw != end && *finally_kw != FINALLY_TOKEN ) {
+ finally_kw = end;
+ finally_block = end;
+ finally_block_end = end;
+ } else {
+ finally_block = finally_kw;
+ finally_block++;
+ finally_block_end = complete_block( finally_block, end, "{", "}" );
+ }
+
+ if( finally_block_end != end ) clause_end = finally_block_end;
+ else if( except_block_end != end ) clause_end = except_block_end;
+ else clause_end = try_block_end;
+
+ /* Skip one so that we can do != on clause_end */
+
+ /* Now for the output phase -- we've collected the whole seh clause
+ * and it lies between try_kw and clause_end */
+
+ finally_name = makename("_Finally");
+ filter_name = makename("_Filter");
+
+ pseh_clause.push_back( "_SEH_FINALLY" );
+ pseh_clause.push_back( "(" );
+ pseh_clause.push_back( finally_name );
+ pseh_clause.push_back( ")" );
+ if( finally_kw != end )
+ append_block( pseh_clause, finally_block, finally_block_end );
+ else {
+ pseh_clause.push_back( "{" );
+ pseh_clause.push_back( "}" );
+ }
+
+ pseh_clause.push_back( "_SEH_FILTER" );
+ pseh_clause.push_back( "(" );
+ pseh_clause.push_back( filter_name );
+ pseh_clause.push_back( ")" );
+ pseh_clause.push_back( "{" );
+ pseh_clause.push_back( "return" );
+ if( paren != end )
+ append_block( pseh_clause, paren, end_paren );
+ else
+ pseh_clause.push_back( "EXCEPTION_EXECUTE_HANDLER" );
+ pseh_clause.push_back( ";" );
+ pseh_clause.push_back( "}" );
+
+ pseh_clause.push_back( "_SEH_TRY_FILTER_FINALLY" );
+ pseh_clause.push_back( "(" );
+ pseh_clause.push_back( filter_name );
+ pseh_clause.push_back( "," );
+ pseh_clause.push_back( finally_name );
+ pseh_clause.push_back( ")" );
+ append_block( pseh_clause, try_block, try_block_end );
+ pseh_clause.push_back( "_SEH_HANDLE" );
+ pseh_clause.push_back( "{" );
+ if( except_block != end )
+ append_block( pseh_clause, except_block, except_block_end );
+ pseh_clause.push_back( "}" );
+ pseh_clause.push_back( "_SEH_END" );
+ pseh_clause.push_back( ";" );
+
+ container.splice( try_kw, pseh_clause );
+ while( try_kw != clause_end ) {
+ todelete = try_kw;
+ try_kw++;
+ container.erase( todelete );
+ }
+}
+
+void print_tokens( sl_it begin, sl_it end ) {
+ for( sl_it i = begin; i != end; i++ )
+ cout << /*"[" <<*/ *i << /*"]" <<*/ endl;
+}
+
+int main( int argc, char **argv ) {
+ sl_t tok;
+ sl_it try_found;
+ int i;
+
+ for( i = 1; i < argc; i++ ) {
+ if( string(argv[i]) == "-try" && i < argc - 1 ) {
+ i++;
+ TRY_TOKEN = argv[i];
+ } else if( string(argv[i]) == "-except" && i < argc - 1 ) {
+ i++;
+ EXCEPT_TOKEN = argv[i];
+ } else if( string(argv[i]) == "-finally" && i < argc - 1 ) {
+ i++;
+ FINALLY_TOKEN = argv[i];
+ }
+ }
+
+ /* XXX Uses much memory for large files */
+ while( expand_input(tok) );
+
+ while( (try_found = find( tok.begin(), tok.end(), TRY_TOKEN )) !=
+ tok.end() ) {
+ handle_try( tok, try_found, tok.end() );
+ }
+
+ print_tokens( tok.begin(), tok.end() );
+}