#include "G__ci.h" /* G__atpause is defined in G__ci.h */
+
+#if (!defined(G__CINTVERSION)) || (G__CINTVERSION < 501438)
+#error You need at least cint 5.14.38 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 < 501438)
+
#include <iostream>
#include <fstream>
#include <string>
#include "config.h"
#include <list>
+#ifndef NO_NAMESPACE_GINAC
+using namespace GiNaC;
+#endif // ndef NO_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>
#endif // def OBSCURE_CINT_HACK
-typedef list<char *> cplist;
+G__value exec_tempfile(string const & command);
+char * process_permanentfile(string const & command);
+void process_tempfile(string const & command);
+void greeting(void);
+void helpmessage(void);
+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(string const & command, string & preprocessed,
+ string const & comparevalue, bool substr=false);
+bool readlines(istream * is, string & allcommands);
+bool readfile(string const & filename, string & allcommands);
+void savefile(string const & filename, string const & allcommands);
+typedef list<char *> cplist;
cplist filenames;
-
-void cleanup(void)
-{
- for (cplist::iterator it=filenames.begin(); it!=filenames.end(); ++it) {
- cout << "removing file " << *it << endl;
- remove(*it);
- free(*it);
- }
-}
-
-void sigterm_handler(int n)
-{
- exit(1);
-}
-
-bool is_whitespace_char(char c)
-{
- return ((c==' ') || (c=='\t') || (c=='\n') || (c=='\r'));
-}
-
-char first_non_whitespace_char(char const * s)
-{
- int l = strlen(s);
- int pos = 0;
- while ((pos<l)&&is_whitespace_char(s[pos])) pos++;
- return s[pos];
-}
-
-char last_non_whitespace_char(char const * s)
-{
- int pos = strlen(s)-1;
- while ((pos>=0) && is_whitespace_char(s[pos])) pos--;
- return s[pos];
-}
-
-string strip_whitespace(string const & s)
-{
- string s2;
- int l = s.length();
- for (int pos=0; pos<l; ++pos) {
- if (!is_whitespace_char(s[pos])) s2 += s[pos];
- }
- return s2;
-}
+bool redirect_output=false;
G__value exec_tempfile(string const & command)
{
fout << "{" << endl << command << endl << "}" << endl;
fout.close();
G__store_undo_position();
- retval=G__exec_tempfile(tmpfilename);
+ retval = G__exec_tempfile(tmpfilename);
G__security_recover(stdout);
remove(tmpfilename);
free(tmpfilename);
{
#ifdef OBSCURE_CINT_HACK
static G__value ref_symbol = exec_tempfile("symbol ginac_cint_internal_symbol; ginac_cint_internal_symbol;");
- static G__value ref_ex = exec_tempfile("ex ginac_cint_internal_ex; ginac_cint_internal_ex;");
+ 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(ginac_cint_internal_symbol,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);
exec_tempfile(string()+"LLLAST=LLAST;\n"
+"LLAST=LAST;\n"
+"LAST="+varname+";\n"
- +"cout << \""+varname+" = \" << "+varname+" << endl << endl;");
+ +"if (ginac_cint_internal_redirect_output&&"
+ +" ginac_cint_internal_fout.good()) {"
+ +" ginac_cint_internal_fout << \""+varname+" = \" << "+varname+" << endl << endl;"
+ +"} else {"
+ +" 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) {
+ cout << endl
+ <<"WARNING: The return value of the last expression you entered was a symbol," << endl
+ << "constant, function, power or numeric, which cannot be safely displayed." << endl
+ << "To force the output, cast it explicitly to type 'ex' or use 'cout'," << endl
+ << "for example (assume 'x' is a symbol):" << endl
+ << PROMPT1 "ex(x);" << endl
+ << "OutX = x" << endl << endl
+ << PROMPT1 "cout << x << endl;" << endl
+ << "x" << endl << endl
+ << "This warning will not be shown again." << endl;
+ basic_type_warning_already_displayed=true;
+ }
}
#endif // def OBSCURE_CINT_HACK
}
<< " (__) * | <MXJ02154@niftyserve.or.jp>. The registration is free." << endl
<< " ._) i N a C | The GiNaC framework is Copyright by Johannes Gutenberg Univ.," << endl
<< "<-------------' Germany and licensed under the terms and conditions of the GPL." << endl
+ << "Type .help for help." << endl
<< endl;
}
-int main(void)
+void helpmessage(void)
{
- char *line;
- char prompt[G__ONELINE];
+ cout << "GiNaC-cint recognizes some special commands which start with a dot:" << endl << endl
+ << " .cint switch to cint interactive mode (see cint" << endl
+ << " documentation for further details)" << endl
+ << " .function define the body of a function (necessary due to a" << endl
+ << " cint limitation)" << endl
+ << " .help the text you are currently reading" << endl
+ << " .q, .quit, .exit, .bye quit GiNaC-cint" << endl
+ << " .read filename read a file from disk and execute it in GiNaC-cint" << endl
+ << " (recursive call is possible)" << endl
+ << " .redirect [filename] redirect 'OutXY = ...' output to a file" << endl
+ << " (.redirect alone redirects output back to console)" << endl
+ << " .restart restart GiNaC-cint (does not re-read command line" << endl
+ << " files)" << endl
+ << " .save filename save the commands you have entered so far in a file" << endl
+ << " .silent suppress 'OutXY = ...' output (variables are still" << endl
+ << " accessible)" << endl
+ << " .> [filename] same as .redirect [filename]" << endl << endl
+ << "Instead of '.cmd' you can also write '//GiNaC-cint.cmd' to be compatible with" << endl
+ << "programs that will be compiled later." << endl
+ << "Additionally you can exit GiNaC-cint with quit; exit; or bye;" << endl
+ << endl;
+}
+
+string preprocess(char const * const line, bool & comment, bool & single_quote,
+ bool & double_quote, unsigned & open_braces)
+{
+ // "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
- greeting();
+ // ALL whitespace will be removed
+ // all comments (/* */ and //) will be removed
+ // open and close braces ( { and } ) outside strings will be counted
+
+ /*
+ cout << "line=" << line << endl;
+ cout << "comment=" << comment << ", single_quote=" << single_quote
+ << ",double_quote=" << double_quote << ", open_braces=" << open_braces
+ << endl;
+ */
+
+ 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++;
+ }
+
+ /*
+ cout << "preprocessed=" << preprocessed << endl;
+ cout << "comment=" << comment << ", single_quote=" << single_quote
+ << ",double_quote=" << double_quote << ", open_braces=" << open_braces
+ << endl;
+ */
+
+ return preprocessed;
+}
+
+void cleanup(void)
+{
+ for (cplist::iterator it=filenames.begin(); it!=filenames.end(); ++it) {
+ cout << "removing file " << *it << endl;
+ remove(*it);
+ free(*it);
+ }
+}
+
+void sigterm_handler(int n)
+{
+ exit(1);
+}
+
+void initialize(void)
+{
+ if (isatty(0))
+ greeting();
atexit(cleanup);
signal(SIGTERM,sigterm_handler);
-
+ initialize_cint();
+}
+
+void initialize_cint(void)
+{
G__init_cint("cint"); /* initialize cint */
- exec_tempfile("#include <string>\n");
+ // no longer needed as of cint 5.14.31
+ // exec_tempfile("#include <string>\n");
+
+#ifndef NO_NAMESPACE_GINAC
+ exec_tempfile("using namespace GiNaC;");
+#endif // ndef NO_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)
+{
+ cout << "Restarting GiNaC-cint." << endl;
+ G__scratch_all();
+ initialize_cint();
+}
+
+void redirect(string const & filename)
+{
+ if (filename=="") {
+ cout << "Redirecting output back to console..." << endl;
+ exec_tempfile( string()
+ +"ginac_cint_internal_redirect_output=false;\n"
+ +"ginac_cint_internal_fout.close();");
+ } else {
+ cout << "Redirecting output to " << filename << "..." << endl;
+ exec_tempfile( string()
+ +"ginac_cint_internal_redirect_output=true;\n"
+ +"ginac_cint_internal_fout.open(\""+filename+"\");\n");
+ }
+}
+
+bool is_command(string const & command, string & preprocessed,
+ 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, string & allcommands)
+{
+ char const * line;
+ char prompt[G__ONELINE];
+ string linebuffer;
bool quit = false;
- bool next_command_is_function=false;
- while (!quit) {
- strcpy(prompt,"GiNaC> ");
- int open_braces = 0;
- bool end_of_command=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;
string command;
+ string preprocessed;
while (!end_of_command) {
- line = G__input(prompt);
-
- int pos = 0;
- bool double_quote=false;
- bool single_quote=false;
- while(line[pos]!='\0') {
- switch(line[pos]) {
- case '"':
- if (!single_quote) double_quote = !double_quote;
- break;
- case '\'':
- if (!double_quote) single_quote = !single_quote;
- break;
- case '{':
- if ((!single_quote) && (!double_quote)) open_braces++;
- break;
- case '}':
- if ((!single_quote) && (!double_quote)) open_braces--;
- break;
- }
- pos++;
+ if (is==NULL) {
+ line = G__input(prompt);
+ } else {
+ getline(*is,linebuffer);
+ line=linebuffer.c_str();
}
command += line;
- command += '\n';
- if (open_braces==0) {
- if ((first_non_whitespace_char(command.c_str())=='#')||
- (first_non_whitespace_char(command.c_str())=='.')||
- (last_non_whitespace_char(command.c_str())==';')||
- (last_non_whitespace_char(command.c_str())=='}')) {
+ 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," > ");
+ strcpy(prompt,PROMPT2);
}
- string stripped_command=strip_whitespace(command);
- if ((stripped_command=="quit;")||
- (stripped_command=="exit;")||
- (stripped_command=="bye;")||
- (stripped_command==".q")||
- (stripped_command==".quit")||
- (stripped_command==".exit")||
- (stripped_command==".bye")) {
+ 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 (stripped_command==".function") {
+ } else if (is_command(command,preprocessed,"function")) {
cout << "next expression can be a function definition" << endl;
next_command_is_function=true;
- } else if (stripped_command==".cint") {
+ } else if (is_command(command,preprocessed,"cint")) {
cout << endl << "switching to cint interactive mode" << endl;
cout << "'h' for help, 'q' to quit, '{ statements }' or 'p [expression]' to evaluate" << endl;
G__pause();
cout << "back from cint" << endl;
- } else if (command[0]=='.') {
+ } 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")) {
+ redirect("/dev/null");
+ /* test for more special commands
+ } else if (preprocessed==".xyz") {
cout << "special command (TBD): " << command << endl;
+ */
+ } else if (command.substr(0,2)=="#!") {
+ // ignore lines which indicate that this file is executed as a script
} else {
// cout << "now processing: " << command << endl;
if (next_command_is_function) {
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(string const & filename, string & allcommands)
+{
+ cout << "Reading commands from file " << filename << "." << endl;
+ bool quit=false;
+ ifstream fin;
+ fin.open(filename.c_str());
+ if (fin.good()) {
+ quit=readlines(&fin,allcommands);
+ } else {
+ cout << "Cannot open " << filename << " for reading." << endl;
+ }
+ fin.close();
+ return quit;
+}
+
+void savefile(string const & filename, string const & allcommands)
+{
+ cout << "Saving commands to file " << filename << "." << endl;
+ ofstream fout;
+ fout.open(filename.c_str());
+ if (fout.good()) {
+ fout << allcommands;
+ if (!fout.good()) {
+ cout << "Cannot save commands to " << filename << "." << endl;
+ }
+ } else {
+ cout << "Cannot open " << filename << " for writing." << endl;
+ }
+ fout.close();
+}
+
+int main(int argc, char ** argv)
+{
+ string allcommands;
+ initialize();
+
+ bool quit=false;
+ bool argsexist=argc>1;
+
+ if (argsexist) {
+ allcommands="/* Files given as command line arguments:\n";
+ }
+
+ argc--; argv++;
+ while (argc && !quit) {
+ allcommands += *argv;
+ allcommands += "\n";
+ quit=readfile(*argv,allcommands);
+ argc--; argv++;
+ }
+
+ if (argsexist) {
+ allcommands += "*/\n";
+ }
+
+ if (!quit) {
+ readlines(NULL,allcommands);
}
return 0;
git://www.ginac.de / ginac.git / blobdiff