/ ******************************************************************** * * Date: 11-May-97 * * Purpose: Imbed PERL code in C. * * Notes: This code is based on the examples found in the * Perl man pages. * * Compile: To compile this code you will need a starement simular too: * * g++ perl2.c -L/usr/lib/perl5/i586-linux/5.003/CORE * -I/usr/lib/perl5/i586-linux/5.003/CORE * -lperl * -lm * * This program uses the C++ compiler as there seem to be problems * With the header files on Linux when using GCC. * ********************************************************************/ #include <stdio.h> #include <EXTERN.h> #include <perl.h> /********************************************************************/ PerlInterpreter *my_perl; void PerlInit(char **env); int PerlEval(char *string); void PerlEnd (void); /********************************************************************/ main ( int argc, char **argv, char **env) { unsigned int Length; // ... Initalise. PerlInit(env); // ... Some basic Perl statements PerlEval("$a = 3;"); PerlEval("$a = $a+2;"); // ... Extract an integer perl value into the C code. printf("a = %d\n", SvIV(perl_get_sv("a", FALSE))); PerlEval("$a = $a+2.5;"); // ... Extract a float perl value into the C code. printf("a = %f5.2\n", SvNV(perl_get_sv("a", FALSE))); // ... Play with strings. PerlEval("$a = 'rekcaH lreP rehtonA tsuJ';"); PerlEval("$a = reverse($a); "); // ... Extract a string perl value into the C code. printf("a = %s\n", SvPV(perl_get_sv("a", FALSE), Length)); printf("%d\n", Length); // ... Tidy up. PerlEnd(); } /********************************************************************/ void PerlInit( char **env) { char *Embedding[] = { "", "-e", "sub _eval_ { eval $_[0] }" }; my_perl = perl_alloc(); perl_construct( my_perl ); perl_parse(my_perl, NULL, 3, Embedding, env); } /********************************************************************/ int PerlEval(char *string) { char *argv[2]; argv[0] = string; argv[1] = NULL; perl_call_argv("_eval_", 0, argv); } /********************************************************************/ void PerlEnd(void) { perl_destruct(my_perl); perl_free(my_perl); }
file: /Techref/language/ccpp/cref/EXAMPLES/perl2.c, 2KB, , updated: 1997/5/11 08:59, local time: 2024/12/23 17:03,
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