+/* 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 < 501460)
+#error You need at least cint 5.14.60 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 PROMPT "GiNaC> "
+#define PROMPT1 "GiNaC> "
+#define PROMPT2 " > "
#ifdef OBSCURE_CINT_HACK
#include <strstream>
template<class T>
-string ToString(const T & t)
+std::string ToString(const T & t)
{
- char buf[256];
- ostrstream(buf,sizeof(buf)) << t << ends;
- return buf;
+ 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;
+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
-typedef list<char *> cplist;
+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;
-void cleanup(void)
+G__value exec_tempfile(std::string const & command)
{
- for (cplist::iterator it=filenames.begin(); it!=filenames.end(); ++it) {
- cout << "removing file " << *it << endl;
- remove(*it);
- free(*it);
- }
+ 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;
}
-void sigterm_handler(int n)
+char * process_permanentfile(std::string const & command)
{
- exit(1);
+ 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;
}
-bool is_whitespace_char(char c)
+void process_tempfile(std::string const & command)
{
- return ((c==' ') || (c=='\t') || (c=='\n') || (c=='\r'));
+#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;
}
-char first_non_whitespace_char(char const * s)
+void printversionmessage(std::ostream & os)
{
- int l = strlen(s);
- int pos = 0;
- while ((pos<l)&&is_whitespace_char(s[pos]))
- pos++;
- return s[pos];
-}
+ os << "GiNaC-cint (" << PACKAGE << " V" << VERSION
+ << ", Cint V" << G__CINTVERSION/1000000
+ << '.' << G__CINTVERSION/1000%1000
+ << '.' << G__CINTVERSION%1000 << ')' << endl;
+ return;
+}
-char last_non_whitespace_char(char const * s)
+void greeting(void)
{
- int pos = strlen(s)-1;
- while ((pos>=0) && is_whitespace_char(s[pos]))
- pos--;
- return s[pos];
-}
+ 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;
+}
-string strip_whitespace(string const & s)
+void helpmessage(void)
{
- string s2;
- int l = s.length();
- for (int pos=0; pos<l; ++pos) {
- if (!is_whitespace_char(s[pos])) s2 += s[pos];
- }
- return s2;
+ 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;
}
-G__value exec_tempfile(string const & command)
+void warrantymessage(void)
{
- G__value retval;
- char *tmpfilename = tempnam(NULL,"ginac");
- ofstream fout;
- fout.open(tmpfilename);
- fout << "{" << endl << command << endl << "}" << endl;
- fout.close();
- G__store_undo_position();
- retval = G__exec_tempfile(tmpfilename);
- G__security_recover(stdout);
- remove(tmpfilename);
- free(tmpfilename);
- return retval;
+ 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;
}
-char * process_permanentfile(string const & command)
+/** "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)
{
- char *tmpfilename = tempnam(NULL,"ginac");
- cout << "creating file " << tmpfilename << endl;
- ofstream fout;
- fout.open(tmpfilename);
- fout << command << endl;
- fout.close();
- G__store_undo_position();
- G__loadfile(tmpfilename);
- G__security_recover(stdout);
- return tmpfilename;
+ 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 process_tempfile(string const & command)
+void cleanup(void)
{
-#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
+ for (cplist::iterator it=filenames.begin(); it!=filenames.end(); ++it) {
+ if (!silent)
+ std::cout << "removing file " << *it << std::endl;
+ remove(*it);
+ free(*it);
+ }
+}
- G__value retval = exec_tempfile(command);
+void sigterm_handler(int n)
+{
+ G__scratch_all();
+ exit(1);
+}
-#ifdef OBSCURE_CINT_HACK
+void initialize(void)
+{
+ atexit(cleanup);
+ signal(SIGTERM, sigterm_handler);
+ initialize_cint();
+}
- #define TYPES_EQUAL(A,B) (((A).type==(B).type) && ((A).tagnum==(B).tagnum))
-
- static unsigned out_count = 0;
- if (TYPES_EQUAL(retval,ref_ex)) {
- 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
-
- // cout << "warning: using ex from retval (experimental)" << 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()) {
- //string varfill;
- //for (int i=4-int(log10(out_count)); i>0; --i)
- // varfill += ' ';
- exec_tempfile("ex "+varname+"(*ex::last_created_or_assigned_bp);");
- } else {
- cout << "warning: last_created_or_assigned_bp modified 0 or not evaluated or not dynallocated" << endl;
- }
- exec_tempfile(string()+"LLLAST=LLAST;\n"
- +"LLAST=LAST;\n"
- +"LAST="+varname+";\n"
- +"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
- << PROMPT "ex(x);" << endl
- << "OutX = x" << endl << endl
- << PROMPT "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
-}
+void initialize_cint(void)
+{
+ G__init_cint("cint"); /* initialize cint */
+
+#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 greeting(void)
+void restart(void)
{
- cout << "Welcome to GiNaC-cint (" << PACKAGE << " V" << VERSION << ")" << endl;
- cout << "This software is provided \"as is\" without any warranty. Copyright of Cint is" << endl
- << "owned by Agilent Technologies Japan and Masaharu Goto. Registration is" << endl
- << " __, _______ requested, at this moment, for commercial use. Send e-mail to" << endl
- << " (__) * | <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
- << endl;
+ std::cout << "Restarting GiNaC-cint." << std::endl;
+ G__scratch_all();
+ initialize_cint();
}
-int main(void)
+void redirect(std::string const & filename,
+ bool shutup=false)
{
- char *line;
- char prompt[G__ONELINE];
-
- if (isatty(0))
- greeting();
-
- atexit(cleanup);
- signal(SIGTERM,sigterm_handler);
-
- G__init_cint("cint"); /* initialize cint */
-
- // no longer needed as of cint 5.14.31
- // exec_tempfile("#include <string>\n");
-
- exec_tempfile("ex LAST,LLAST,LLLAST;\n");
-
- bool quit = false;
- bool next_command_is_function=false;
- while (!quit) {
- strcpy(prompt,PROMPT);
- int open_braces = 0;
- bool end_of_command = false;
- string command;
- 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++;
- }
- 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())=='}')) {
- end_of_command=true;
- }
- }
- strcpy(prompt," > ");
- }
- 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")) {
- quit = true;
- } else if (stripped_command==".function") {
- cout << "next expression can be a function definition" << endl;
- next_command_is_function=true;
- } else if (stripped_command==".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]=='.') {
- cout << "special command (TBD): " << command << endl;
- } else {
- // cout << "now processing: " << command << endl;
- if (next_command_is_function) {
- next_command_is_function = false;
- filenames.push_back(process_permanentfile(command));
- } else {
- process_tempfile(command);
- }
- }
- }
-
- return 0;
+ 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 / blobdiff