+++ /dev/null
-.TH ginaccint 1 "January, 2000" "GiNaC"
-.SH NAME
-GiNaC-cint \- An interactive interface for GiNaC based on the Cint C/C++ interpreter
-.SH SYNPOSIS
-.B ginaccint
-[file ...]
-.SH DESCRIPTION
-.B ginaccint
-is an interactive frontend for the GiNaC symbolic computation
-framework. It is a tool that lets you write interactive programs
-(scripts) in C++ that directly make use of GiNaC's classes. Thus it
-is a more complete replacement for traditional interactive computer
-algebra systems than \fBginsh\fP(1) is. Programs may be composed as
-scripts and later compiled with the native compiler and linked into
-the system.
-.SH USAGE
-.SS INPUT FORMAT
-After startup, GiNaC-cint reads and executes the files given as
-command line arguments. If any of these files contains a
-.BR .quit
-command, GiNaC-cint exits at this point.
-Otherwise it displays a prompt signifying that it is ready to
-accept your input. All C++ statements are valid as input, extended by
-GiNaC's numeric or symbolic expressions. E.g.
-.BR fibonacci(numeric(24))/1104;
-returns a GiNaC object of class
-.BR "ex" ,
-which in this case represents the numeric 42. Symbols are declared by
-statements as
-.nf
-GiNaC> symbol x("x"), y("y"), z;
-.fi
-which defines two named symbols and an anonymous one for later usage.
-All GiNaC methods and functions are available as they would be coded
-in C++. It is not necessary to explicitly invoke a print command as
-the last expression is automatically printed:
-.nf
-GiNaC> pow(x+y,4).expand();
-Out2 = x^4+4*x^3*y+6*x^2*y^2+4*x*y^3+y^4
-.fi
-Statements are generally closed either when a closing brace
-.RB ( } )
-matches the first opening brace
-.RB ( { )
-or a semicolon
-.RB ( ; )
-is encountered while there are no open braces. This implies that
-an input like
-.nf
-GiNaC> class A {
- > }
- > ;
-.fi
-is misinterpreted to be complete after the closing brace.
-Instead you have to write
-.nf
-GiNaC> class A {
- > };
-.fi
-
-.SS SPECIAL COMMANDS
-
-Lines starting with a dot mark special GiNaC-cint commands. Instead of
-.BR "\fB.cmd\fB"
-you can also write
-.BR "\fB//GiNaC-cint.cmd\fB"
-to be compatible with programs that will be compiled later.
-This is mostly useful for the
-.BR "\fB.function\fB"
-declaration.
-
-Lines starting with #! (for #!/path/ginaccint) are ignored.
-
-
-.IP "\fB.cint\fR"
-Switch to cint's interactive mode.
-
-.IP "\fB.function\fR"
-
-Allow a function definition in interactive mode. GiNaC-cint must be
-put into a special mode in order to define a function. After that any
-function definition in valid C++ syntax may be typed in. It becomes
-immediatly available for usage.
-
-.IP "\fB.help\fB"
-
-List a short summary of available commands.
-
-.IP "\fB.quit\fR"
-Exit from GiNaC-cint. Same as
-.BR ".bye" ,
-.BR ".exit" ,
-.BR ".q" ,
-.BR "bye;" ,
-.BR "exit; " or
-.BR "quit;" .
-
-.IP "\fB.read filename\fB"
-
-Read a file from disk and execute it in GiNaC-cint
-(recursive call is possible).
-
-.IP "\fB.redirect [filename]\fB"
-
-Redirect
-.BR "\fBOut\fP\fInum\fP"
-output to a file (
-.BR .redirect
-alone redirects output to console).
-
-.IP "\fB.restart\fB"
-
-Restart GiNaC-cint (does not re-read command line files).
-
-.IP "\fB.save filename\fB"
-
-Save the commands you have entered so far in a file.
-
-.IP "\fB.silent\fB"
-
-suppress
-.BR "\fBOut\fP\fInum\fP"
-output (variables are still accessible).
-
-.IP "\fB.> [filename]\fB"
-
-same as
-.BR "\fB.redirect [filename]\fB" .
-
-.IP "\fBOut\fP\fInum\fP"
-Returns the expression whose output was marked
-.BR "\fBOut\fP\fInum\fP"
-as a handle.
-
-.IP "\fBLAST\fP, \fBLLAST, \fP\fBLLLAST\fP"
-Return the last, second last and third last expression,
-respectively.
-
-.SH EXAMPLES
-.nf
-GiNaC> symbol x("x"), y("y"), z("z");
-GiNaC> ex a = pow(x,2)-x-2;
-GiNaC> ex b = pow(x+1,2);
-GiNaC> ex s = a/b;
-GiNaC> s.diff(x);
-Out1 = -2*(1+x)^(-3)*(-2-x+x^2)+(-1+2*x)*(1+x)^(-2)
-GiNaC> s.normal();
-Out2 = (-2+x)*(1+x)^(-1)
-GiNaC> for (int i=2; i<20; i+=2) {
- > cout << "B(" << i << ")==" << bernoulli(numeric(i)) << endl;
- > }
-B(2)==1/6
-B(4)==-1/30
-B(6)==1/42
-B(8)==-1/30
-B(10)==5/66
-B(12)==-691/2730
-B(14)==7/6
-B(16)==-3617/510
-B(18)==43867/798
-GiNaC> .function
-next expression can be a function definition
-GiNaC> ex EulerNumber(unsigned n)
- > {
- > symbol xi;
- > const ex generator = pow(cosh(xi),-1);
- > return generator.diff(xi,n).subs(xi==0);
- > }
-creating file /tmp/ginac26197caa
-GiNaC> EulerNumber(42);
-Out3 = -10364622733519612119397957304745185976310201
-GiNaC> ex f = expand((x*y*z-1)*(x*y*z+3));
-GiNaC> ex g = expand((x*y*z-1)*(x*y*z-3));
-GiNaC> cout << "The GCD of " << f << " and " << g << endl
- > << " is " << gcd(f, g) << endl
- > << " so " << f/g << endl
- > << " is " << normal(f/g) << endl;
-The GCD of -3+2*x*z*y+x^2*z^2*y^2 and 3-4*x*z*y+x^2*z^2*y^2
- is -1+x*z*y
- so (-3+2*x*z*y+x^2*z^2*y^2)*(3-4*x*z*y+x^2*z^2*y^2)^(-1)
- is (-3+x*z*y)^(-1)*(3+x*z*y)
-GiNaC> .quit
-.fi
-
-.SH BUGS
-Cint accepts most of K&R and ANSI C/C++ language construct but not
-perfect. In fact, Cint is not aimed to be a 100% ANSI/ISO compliant
-C/C++ language processor. It rather is a portable script language
-environment which is close enough to the standard C++. See the file
-.BR limitati.txt
-in your Cint distribution. Please take the time to track down any bug
-you encounter as far as possible and contact Masaharu Goto
-<MXJ02154@niftyserve.or.jp> for Cint-related bugs and
-<ginac-bugs@ginac.de> for any bugs in the GiNaC engine.
-
-Only expressions (class
-.BR ex )
-are typed out and available through
-.BR "\fBOut\fP\fInum\fP"
-and
-.BR LAST
-after declaring them. This accounts for some funny behaviour, like
-.BR fibonacci(numeric(7))
-doesn't print, but
-.BR fibonacci(numeric(7))*1
-does, since this is not a naked number but an expression holding
-that number. A warning message is printed in this case only for
-the first occurence.
-
-.SH AUTHOR
-.TP
-The GiNaC Group
-.br
-Christian Bauer <Christian.Bauer@uni-mainz.de>
-.br
-Alexander Frink <Alexander.Frink@uni-mainz.de>
-.br
-Richard Kreckel <Richard.Kreckel@uni-mainz.de>
-.TP
-Agilent Technologies Japan
-.br
-Masaharu Goto <MXJ02154@niftyserve.or.jp>
-.SH SEE ALSO
-GiNaC Tutorial \- An open framework for symbolic computation within the
-C++ programming language
-.PP
-CLN \- A Class Library for Numbers, Bruno Haible
-.PP
-\fBginsh\fP(1)
-.SH COPYRIGHT
-.SS GINAC COPYRIGHT
-Copyright \(co 1999-2001 Johannes Gutenberg Universit\(:at Mainz, Germany
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-.SS CINT COPYRIGHT
-Copyright \(co of Cint and associated tools are owned by Agilent
-Technologies Japan Company and the author (Masaharu Goto). Source
-code, binary executable or library of Cint and associated tools can be
-used, modified and distributed with no royalty for any purpose
-provided that the copyright notice appear in all copies and that both
-that copyright notice and this permission notice appear in supporting
-documentation. Registration is recommended for commercial use
-(=Selling a software that uses cint as a component). Send e-mail to
-the author (MXJ02154@niftyserve.or.jp) with your name, e-mail address,
-institute, purpose of using cint and computer platform. If a
-modification is made on any of the source or documentation, it has to
-be clearly documented and expressed. Agilent Technologies Japan and
-the author make no representations about the suitability of this
-software for any purpose.
+++ /dev/null
-/* ginaccint.bin.cpp: Binary depends on CINTSYSDIR, better don't call it
- * directly. Use the launcher (compiled from ginaccint.cpp) instead. */
-
-#include "G__ci.h" /* G__atpause is defined in G__ci.h */
-
-#if (!defined(G__CINTVERSION)) || (G__CINTVERSION < 501464)
-#error You need at least cint 5.14.64 to compile GiNaC-cint. Download it via http from root.cern.ch/root/Cint.html or via ftp from ftpthep.physik.uni-mainz.de/pub/cint
-#endif // (!defined(G__CINTVERSION)) || (G__CINTVERSION < 501464)
-
-#include <iostream>
-#include <fstream>
-#include <string>
-#include <stdio.h>
-#include <stdlib.h>
-#include "ginac/ginac.h"
-#include "config.h"
-#include <list>
-
-using namespace GiNaC;
-
-extern "C" G__value G__exec_tempfile G__P((char *file));
-extern "C" void G__store_undo_position(void);
-
-#define PROMPT1 "GiNaC> "
-#define PROMPT2 " > "
-
-#ifdef OBSCURE_CINT_HACK
-
-#include <strstream>
-
-template<class T>
-std::string ToString(const T & t)
-{
- char buf[256];
- ostrstream(buf,sizeof(buf)) << t << ends;
- return buf;
-}
-
-basic * ex::last_created_or_assigned_bp = 0;
-basic * ex::dummy_bp = 0;
-long ex::last_created_or_assigned_exp = 0;
-
-#endif // def OBSCURE_CINT_HACK
-
-G__value exec_tempfile(std::string const & command);
-char * process_permanentfile(std::string const & command);
-void process_tempfile(std::string const & command);
-void printversionmessage(std::ostream & os);
-void greeting(void);
-void helpmessage(void);
-std::string preprocess(char const * const line, bool & comment, bool & single_quote,
- bool & double_quote, unsigned & open_braces);
-void cleanup(void);
-void sigterm_handler(int n);
-void initialize(void);
-void initialize_cint(void);
-void restart(void);
-bool is_command(std::string const & command, std::string & preprocessed,
- std::string const & comparevalue, bool substr=false);
-bool readlines(istream * is, std::string & allcommands);
-bool readfile(std::string const & filename, std::string & allcommands, bool shutup=false);
-void savefile(std::string const & filename, std::string const & allcommands);
-
-typedef list<char *> cplist;
-cplist filenames;
-bool redirect_output = false;
-bool silent = false;
-
-G__value exec_tempfile(std::string const & command)
-{
- G__value retval;
- char *tmpfilename = tempnam(NULL,"ginac");
- std::ofstream fout;
- fout.open(tmpfilename);
- fout << "{" << std::endl << command << std::endl << "}" << std::endl;
- fout.close();
- G__store_undo_position();
- retval = G__exec_tempfile(tmpfilename);
- G__security_recover(stdout);
- remove(tmpfilename);
- free(tmpfilename);
- return retval;
-}
-
-char * process_permanentfile(std::string const & command)
-{
- char *tmpfilename = tempnam(NULL,"ginac");
- if (!silent)
- std::cout << "creating file " << tmpfilename << std::endl;
- std::ofstream fout;
- fout.open(tmpfilename);
- fout << command << std::endl;
- fout.close();
- G__store_undo_position();
- G__loadfile(tmpfilename);
- G__security_recover(stdout);
- return tmpfilename;
-}
-
-void process_tempfile(std::string const & command)
-{
-#ifdef OBSCURE_CINT_HACK
- static G__value ref_symbol = exec_tempfile("symbol ginac_cint_internal_symbol; ginac_cint_internal_symbol;");
- static G__value ref_constant = exec_tempfile("constant ginac_cint_internal_constant; ginac_cint_internal_constant;");
- static G__value ref_function = exec_tempfile("sin(ginac_cint_internal_symbol);");
- static G__value ref_power = exec_tempfile("power(ex(ginac_cint_internal_symbol),ex(ginac_cint_internal_symbol));");
- static G__value ref_numeric = exec_tempfile("numeric ginac_cint_internal_numeric; ginac_cint_internal_numeric;");
- static G__value ref_ex = exec_tempfile("ex ginac_cint_internal_ex; ginac_cint_internal_ex;");
- static bool basic_type_warning_already_displayed = false;
-#endif // def OBSCURE_CINT_HACK
-
- G__value retval = exec_tempfile(command);
-
-#ifdef OBSCURE_CINT_HACK
-
- #define TYPES_EQUAL(A,B) (((A).type==(B).type) && ((A).tagnum==(B).tagnum))
-
- static unsigned out_count = 0;
- if (TYPES_EQUAL(retval,ref_ex)) {
- std::string varname = "Out"+ToString(++out_count);
- if (retval.obj.i!=ex::last_created_or_assigned_exp) {
- // an ex was returned, but this is not the ex which was created last
- // => this is not a temporary ex, but one that resides safely in memory
-
- // std::cout << "warning: using ex from retval (experimental)" << std::endl;
- ex::dummy_bp = ((ex *)(void *)(retval.obj.i))->bp;
- exec_tempfile("ex "+varname+"(*ex::dummy_bp);");
- } else if (ex::last_created_or_assigned_bp_can_be_converted_to_ex()) {
- exec_tempfile("ex "+varname+"(*ex::last_created_or_assigned_bp);");
- } else {
- std::cout << "warning: last_created_or_assigned_bp modified 0 or not evaluated or not dynallocated" << std::endl;
- }
- exec_tempfile(std::string()+"LLLAST=LLAST;\n"
- +"LLAST=LAST;\n"
- +"LAST="+varname+";\n"
- +"if (ginac_cint_internal_redirect_output&&"
- +" ginac_cint_internal_fout.good()) {"
- +" ginac_cint_internal_fout << \""+varname+" = \" << "+varname+" << endl << endl;"
- +"} else {"
- +" std::cout << \""+varname+" = \" << "+varname+" << endl << endl;"
- +"}");
- } else if (TYPES_EQUAL(retval,ref_symbol)||
- TYPES_EQUAL(retval,ref_constant)||
- TYPES_EQUAL(retval,ref_function)||
- TYPES_EQUAL(retval,ref_power)||
- TYPES_EQUAL(retval,ref_numeric)) {
- if (!basic_type_warning_already_displayed) {
- std::cout << std::endl
- <<"WARNING: The return value of the last expression you entered was a symbol," << std::endl
- << "constant, function, power or numeric, which cannot be safely displayed." << std::endl
- << "To force the output, cast it explicitly to type 'ex' or use 'cout'," << std::endl
- << "for example (assume 'x' is a symbol):" << std::endl
- << PROMPT1 "ex(x);" << std::endl
- << "OutX = x" << std::endl << std::endl
- << PROMPT1 "cout << x << endl;" << std::endl
- << "x" << std::endl << std::endl
- << "This warning will not be shown again." << std::endl;
- basic_type_warning_already_displayed = true;
- }
- }
-#endif // def OBSCURE_CINT_HACK
- return;
-}
-
-void printversionmessage(std::ostream & os)
-{
- os << "GiNaC-cint (" << PACKAGE << " V" << VERSION
- << ", Cint V" << G__CINTVERSION/1000000
- << '.' << G__CINTVERSION/1000%1000
- << '.' << G__CINTVERSION%1000 << ')' << endl;
- return;
-}
-
-void greeting(void)
-{
- std::cout << "Welcome to ";
- printversionmessage(std::cout);
- std::cout << " __, _______ GiNaC: (C) 1999-2001 Johannes Gutenberg University Mainz,\n"
- << " (__) * | Germany. Cint C/C++ interpreter: (C) 1995-2001 Masaharu\n"
- << " ._) i N a C | Goto and Agilent Technologies, Japan. This is free software\n"
- << "<-------------' with ABSOLUTELY NO WARRANTY. For details, type `.warranty'\n"
- << "Type `.help' for help.\n\n";
- return;
-}
-
-void helpmessage(void)
-{
- std::cout << "GiNaC-cint recognizes some special commands which start with a dot:\n\n"
- << " .cint switch to cint interactive mode (see cint\n"
- << " documentation for further details)\n"
- << " .function define the body of a function (necessary due to a\n"
- << " cint limitation)\n"
- << " .help the text you are currently reading\n"
- << " .q, .quit, .exit, .bye quit GiNaC-cint\n"
- << " .read filename read a file from disk and execute it in GiNaC-cint\n"
- << " (recursive call is possible)\n"
- << " .redirect [filename] redirect 'OutXY = ...' output to a file\n"
- << " (.redirect alone redirects output back to console)\n"
- << " .restart restart GiNaC-cint (does not re-read command line\n"
- << " files)\n"
- << " .save filename save the commands you have entered so far in a file\n"
- << " .silent suppress 'OutXY = ...' output (variables are still\n"
- << " accessible)\n"
- << " .warranty information on redistribution and warranty\n"
- << " .> [filename] same as .redirect [filename]\n\n"
- << "Instead of '.cmd' you can also write '//GiNaC-cint.cmd' to be compatible with\n"
- << "programs that will be compiled later.\n"
- << "Additionally you can exit GiNaC-cint with quit; exit; or bye;\n\n";
- return;
-}
-
-void warrantymessage(void)
-{
- std::cout << "GiNaC is free software; you can redistribute it and/or modify it under the\n"
- << "the terms of the GNU General Public License as published by the Free Software\n"
- << "Foundation; either version 2 of the License, or (at your option) any later\n"
- << "version.\n"
- << "This program is distributed in the hope that it will be useful, but WITHOUT\n"
- << "ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\n"
- << "FOR A PARTICULAR PURPOSE. See the GNU General Public License for more\n"
- << "details.\n"
- << "You should have received a copy of the GNU General Public License along with\n"
- << "this program. If not, write to the Free Software Foundation, 675 Mass Ave,\n"
- << "Cambridge, MA 02139, USA.\n\n";
- std::cout << "Cint and associated tools are copyright by Agilent Technologies Japan Company\n"
- << "and Masaharu Goto <MXJ02154@niftyserve.or.jp>.\n"
- << "Source code, binary executable or library of Cint and associated tools can be\n"
- << "used, modified and distributed with no royalty for any purpose provided that\n"
- << "the copyright notice appear in all copies and that both that copyright notice\n"
- << "and this permission notice appear in supporting documentation.\n"
- << "Agilent Technologies Japan and the author make no representations about the\n"
- << "suitability of this software for any purpose. It is provided \"AS IS\"\n"
- << "without express or implied warranty.\n";
- return;
-}
-
-/** "preprocess" the line entered to be able to decide if the command shall be
- * executed directly or more input is needed or this is a special command.
- * All whitespace will be removed. All comments will be removed. Open and
- * close braces ( { and } ) outside strings will be counted. */
-std::string preprocess(char const * const line, bool & comment, bool & single_quote,
- bool & double_quote, unsigned & open_braces)
-{
- std::string preprocessed;
- int pos = 0;
- bool end = false;
- bool escape = false;
- bool slash = false;
- bool asterisk = false;
- while ((line[pos]!='\0')&&!end) {
- if (escape) {
- // last character was a \, ignore this one
- escape = false;
- } else if (slash) {
- // last character was a /, test if * or /
- slash = false;
- if (line[pos]=='/') {
- end = true;
- } else if (line[pos]=='*') {
- comment = true;
- } else {
- preprocessed += '/';
- preprocessed += line[pos];
- }
- } else if (asterisk) {
- // last character was a *, test if /
- asterisk = false;
- if (line[pos]=='/') {
- comment = false;
- } else if (line[pos]=='*') {
- preprocessed += '*';
- asterisk = true;
- }
- } else {
- switch (line[pos]) {
- case ' ':
- case '\t':
- case '\n':
- case '\r':
- // whitespace: ignore
- break;
- case '\\':
- // escape character, ignore next
- escape = true;
- break;
- case '"':
- if ((!single_quote)&&(!comment)) {
- double_quote = !double_quote;
- }
- break;
- case '\'':
- if ((!double_quote)&&(!comment)) {
- single_quote = !single_quote;
- }
- break;
- case '{':
- if ((!single_quote)&&(!double_quote)&&(!comment)) {
- ++open_braces;
- }
- break;
- case '}':
- if ((!single_quote)&&(!double_quote)&&(!comment)&&(open_braces>0)) {
- --open_braces;
- }
- break;
- case '/':
- slash = true;
- break;
- case '*':
- asterisk = true;
- break;
- default:
- preprocessed += line[pos];
- }
- }
- ++pos;
- }
-
- return preprocessed;
-}
-
-void cleanup(void)
-{
- for (cplist::iterator it=filenames.begin(); it!=filenames.end(); ++it) {
- if (!silent)
- std::cout << "removing file " << *it << std::endl;
- remove(*it);
- free(*it);
- }
-}
-
-void sigterm_handler(int n)
-{
- G__scratch_all();
- exit(1);
-}
-
-void initialize(void)
-{
- atexit(cleanup);
- signal(SIGTERM, sigterm_handler);
- initialize_cint();
-}
-
-void initialize_cint(void)
-{
- G__init_cint("cint"); /* initialize cint */
-
- exec_tempfile("using namespace GiNaC;");
- exec_tempfile("ex LAST,LLAST,LLLAST;\n");
- exec_tempfile("bool ginac_cint_internal_redirect_output = false;\n");
- exec_tempfile("ofstream ginac_cint_internal_fout;\n");
-}
-
-void restart(void)
-{
- std::cout << "Restarting GiNaC-cint." << std::endl;
- G__scratch_all();
- initialize_cint();
-}
-
-void redirect(std::string const & filename,
- bool shutup=false)
-{
- if (filename=="") {
- if (!shutup)
- std::cout << "Redirecting output back to console..." << std::endl;
- exec_tempfile(std::string()
- +"ginac_cint_internal_redirect_output=false;\n"
- +"ginac_cint_internal_fout.close();");
- } else {
- if (!shutup)
- std::cout << "Redirecting output to " << filename << "..." << std::endl;
- exec_tempfile(std::string()
- +"ginac_cint_internal_redirect_output=true;\n"
- +"ginac_cint_internal_fout.open(\""+filename+"\");\n");
- }
-}
-
-/** Sort out command line options and evaluate them. Returns true if it
- * succeeds and false otherwise. */
-bool evaloption(const std::string & option)
-{
- if (option=="--version") {
- printversionmessage(std::cout);
- exit(0);
- }
- if (option=="--help") {
- printversionmessage(std::cout);
- std::cout << "usage: ginaccint [option] [file ...]\n";
- std::cout << " --help print this help message and exit\n"
- << " --silent invoke ginaccint in silent mode\n"
- << " --version print GiNaC version and Cint version and exit\n";
- exit(0);
- }
- if (option=="--silent") {
- redirect("/dev/null",true);
- silent = true;
- return true;
- }
- return false;
-}
-
-bool is_command(std::string const & command,
- std::string & preprocessed,
- std::string const & comparevalue,
- bool substr)
-{
- bool single_quote = false;
- bool double_quote = false;
- bool comment = false;
- unsigned open_braces = 0;
- if ((preprocessed=="."+comparevalue)||
- substr&&(preprocessed.substr(0,comparevalue.length()+1)==
- "."+comparevalue)) {
- return true;
- }
- if ((command=="//GiNaC-cint."+comparevalue+"\n") ||
- substr &&
- (command.substr(0,comparevalue.length()+13)=="//GiNaC-cint."+comparevalue)) {
- preprocessed = preprocess(command.substr(12).c_str(),comment,
- single_quote,double_quote,open_braces);
- return true;
- }
- return false;
-}
-
-bool readlines(istream * is,
- std::string & allcommands)
-{
- char const * line;
- char prompt[G__ONELINE];
- std::string linebuffer;
-
- bool quit = false;
- bool eof = false;
- bool next_command_is_function = false;
- bool single_quote = false;
- bool double_quote = false;
- bool comment = false;
- unsigned open_braces = 0;
-
- while ((!quit)&&(!eof)) {
- strcpy(prompt,PROMPT1);
- bool end_of_command = false;
- std::string command;
- std::string preprocessed;
- while (!end_of_command) {
- if (is==NULL) {
- line = G__input(prompt);
- } else {
- getline(*is,linebuffer);
- line = linebuffer.c_str();
- }
- command += line;
- command += "\n";
- preprocessed += preprocess(line,comment,single_quote,double_quote,open_braces);
- if ((open_braces==0)&&(!single_quote)&&(!double_quote)&&(!comment)) {
- unsigned l = preprocessed.length();
- if ((l==0)||
- (preprocessed[0]=='#')||
- (preprocessed[0]=='.')||
- (preprocessed[l-1]==';')||
- (preprocessed[l-1]=='}')) {
- end_of_command = true;
- }
- }
- strcpy(prompt,PROMPT2);
- }
- if ((preprocessed=="quit;")||
- (preprocessed=="exit;")||
- (preprocessed=="bye;")||
- (is_command(command,preprocessed,"quit"))||
- (is_command(command,preprocessed,"exit"))||
- (is_command(command,preprocessed,"bye"))||
- (is_command(command,preprocessed,"q"))) {
- quit = true;
- } else if (is_command(command,preprocessed,"function")) {
- if (!silent)
- std::cout << "next expression can be a function definition" << std::endl;
- next_command_is_function = true;
- } else if (is_command(command,preprocessed,"cint")) {
- std::cout << std::endl << "switching to cint interactive mode" << std::endl;
- std::cout << "'h' for help, 'q' to quit, '{ statements }' or 'p [expression]' to evaluate" << std::endl;
- G__pause();
- std::cout << "back from cint" << std::endl;
- } else if (is_command(command,preprocessed,"help")) {
- helpmessage();
- } else if (is_command(command,preprocessed,"read",true)) {
- quit = readfile(preprocessed.substr(5),allcommands);
- } else if (is_command(command,preprocessed,"save",true)) {
- command = "/* "+command+" */"; // we do not want the .save command itself in saved files
- savefile(preprocessed.substr(5),allcommands);
- } else if (is_command(command,preprocessed,"restart")) {
- restart();
- } else if (is_command(command,preprocessed,"redirect",true)) {
- redirect(preprocessed.substr(9));
- } else if (is_command(command,preprocessed,">",true)) {
- redirect(preprocessed.substr(2));
- } else if (is_command(command,preprocessed,"silent")) {
- if (!silent) {
- redirect("/dev/null");
- silent = true;
- } else {
- redirect("");
- silent = false;
- }
- } else if (is_command(command,preprocessed,"warranty")) {
- warrantymessage();
- /* insert tests for more special commands here */
- } else if (command.substr(0,2)=="#!") {
- // ignore lines which indicate that this file is executed as a script
- } else {
- // std::cout << "now processing: " << command << std::endl;
- if (next_command_is_function) {
- next_command_is_function = false;
- filenames.push_back(process_permanentfile(command));
- } else {
- process_tempfile(command);
- }
- }
- if (is!=NULL) {
- // test for end of file if reading from a stream
- eof = is->eof();
- } else {
- // save commands only when reading from keyboard
- allcommands += command;
- }
-
- }
- return quit;
-}
-
-bool readfile(std::string const & filename,
- std::string & allcommands,
- bool shutup = false)
-{
- if (!shutup)
- std::cout << "Reading commands from file " << filename << "." << std::endl;
- bool quit = false;
- std::ifstream fin;
- fin.open(filename.c_str());
- if (fin.good())
- quit = readlines(&fin,allcommands);
- else
- std::cout << "Cannot open " << filename << " for reading." << std::endl;
- fin.close();
- return quit;
-}
-
-void savefile(std::string const & filename, std::string const & allcommands)
-{
- std::cout << "Saving commands to file " << filename << "." << std::endl;
- std::ofstream fout;
- fout.open(filename.c_str());
- if (fout.good()) {
- fout << allcommands;
- if (!fout.good()) {
- std::cout << "Cannot save commands to " << filename << "." << std::endl;
- }
- } else {
- std::cout << "Cannot open " << filename << " for writing." << std::endl;
- }
- fout.close();
-}
-
-int main(int argc, char * *argv)
-{
- std::string allcommands;
- initialize();
-
- bool quit = false;
- // sort out and evaluate recognized options from the argument list
- for (int i=1; i<argc; ++i)
- if (evaloption(argv[i])) {
- for (int j=i; j<argc-1; ++j)
- argv[j] = argv[j+1];
- --argc;
- }
- bool argsexist = argc>1;
-
- // greet the user if it makes sense
- if (isatty(0) && !silent)
- greeting();
-
- // evaluate files given as command line arguments
- if (argsexist) {
- allcommands = "/* Files given as command line arguments:\n";
- --argc;
- while (argc && !quit) {
- allcommands += std::string(argv[argc])+'\n';
- quit = readfile(argv[argc], allcommands, silent);
- --argc;
- }
- allcommands += "*/\n";
- }
-
- // evaluate input from command line or script
- if (!quit)
- readlines(NULL, allcommands);
-
- return 0;
-}
git://www.ginac.de / ginac.git / commitdiff