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main.c
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/*
* Main for c2ada translator
*/
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include "c2ada.h"
#undef NULL
#define NULL 0
extern int Num_Errors;
int enum_reps; /* Flag to force enum reps */
int export_from_c; /* Flag to export funcs and vars from .c file */
bool suppress_record_repspec = true; /* Suppress record rep clauses */
int repspec_flag; /* Flag to force record rep clauses */
int comment_size; /* Flag to force type size output */
bool auto_package = true; /* Flag to gen packages automatically */
int flag_unions;
bool import_decls = false; /* Import declarations from included headers */
int translate_comments; /* Attempt to retain C comments */
bool macro_warnings = true; /* Warn about untranslated macros */
int map_files = 0; /* Map file cbind.map used to map unit names */
int output_refs = 1; /* Output references from Ada back to C */
vendor_t ada_compiler = GNAT;
int ada_version = 1995;
extern void yylex_init(void);
extern void yyparse(void);
#define streq(s1, s2) (strcmp((s1), (s2)) == 0)
static void show_flag(char* flag, char* explanation)
{
if(flag)
{
fprintf(stderr, "\t%s\n", flag);
}
if(explanation)
{
fprintf(stderr, "\t\t%s\n\n", explanation);
}
}
static int usage(char* prog)
{
fputs("Illegal invocation\n\n", stderr);
fprintf(stderr, "Usage: %s [flags] input files\n", prog);
fputs(" flags:\n\n", stderr);
show_flag("-Dname[=value]", "Define a macro with an optional value. By default\n"
"\t\t\tmacros will be defined with the value 1.");
show_flag("-Uname", "Undefine a builtin macro.");
show_flag("-Idir", "Add a search path for finding include files.");
show_flag("-S", "Add a search path for system include files");
show_flag("-builtin", "Display all predefined macros.");
show_flag("-fun", "Flag all union declarations.");
show_flag("-cs", "Add sizeof and alignof comments for all decls.");
show_flag("-erc", "Always gen enum rep clauses.");
show_flag("-exp", "Export functions, variables from .c file to Ada spec.");
show_flag("-sih", "Suppress import declarations from included headers."
"(default)");
show_flag("-rrc", "Always gen record rep clauses.");
show_flag("-src", "Suppress all record rep clauses.(default)");
show_flag("-ap", "Automatic packaging. (default)");
show_flag("-C", "Attempt to retain C comments in the translation.");
show_flag("-noref", "No reference comments from Ada back to C.");
show_flag("-mwarn", "Warnings about untranslated macros.(default)");
show_flag("-rational | -vads | -gnat | -icc", "Rational | VADS | GNAT(default) | Irvine"
" as target compiler.");
show_flag("-95", "Output Ada 95 (default).");
show_flag("-pp", "Predefined package name, default is C.");
show_flag("-mf", "Map file cbind.map used to map unit names.");
show_flag("-Pfilename", "project configuration file name");
show_flag("-Opathname", "output directory (default=bindings)");
return 1;
}
static void do_define(const char* name)
{
char* val;
if(name[0] == 0)
{
return;
}
val = strchr(name, '=');
if(val == NULL)
{
macro_def(name, "1", 1, -1, NULL, 0, NULL);
return;
}
*val = '\0';
val++;
macro_def(name, val, strlen(val), -1, NULL, 0, NULL);
}
int main(int argc, char* argv[])
{
extern void gen();
int i;
int fstart = 0;
int show = 0;
macro_init(0);
symset_init();
for(i = 1; i < argc; i++)
{
if(argv[i][0] == '-')
{
if(fstart != 0)
{
fputs("Place flags before files\n", stderr);
return usage(argv[0]);
}
switch(argv[i][1])
{
case 'a':
if(!streq(argv[i], "-ap"))
{
return usage(argv[0]);
}
else
{
auto_package = 1;
}
break;
case 'C':
if(argv[i][2] == 0)
{
translate_comments = 1;
}
else
{
return usage(argv[0]);
}
break;
case 'c':
if(!strcmp(argv[i], "-cs"))
{
comment_size = 1;
}
else
{
return usage(argv[0]);
}
break;
case 'e':
if(!strcmp(argv[i], "-erc"))
{
enum_reps = 1;
}
else if(!strcmp(argv[i], "-exp"))
{
export_from_c = 1;
}
else
{
return usage(argv[0]);
}
break;
case 'f':
if(strcmp(argv[i], "-fun"))
{
return usage(argv[0]);
}
else
{
flag_unions = 1;
}
break;
case 'D':
do_define(&argv[i][2]);
break;
case 'U':
macro_undef(&argv[i][2]);
break;
case 'I':
cpp_search_path(&argv[i][2]);
break;
case 'O':
set_output_dir(&argv[i][2]);
break;
case 'S':
cpp_system_search_path(&argv[i][2]);
break;
case 'b':
if(strcmp(argv[i], "-builtin"))
{
return usage(argv[0]);
}
else
{
show = 1;
}
break;
case 'm':
if(!strcmp(argv[i], "-mwarn"))
{
macro_warnings = 1;
}
else if(!strcmp(argv[i], "-mf"))
{
map_files = 1;
}
else
{
return usage(argv[0]);
}
break;
case 'M':
{
extern bool do_const_macros;
do_const_macros = false;
break;
}
case 'v':
if(strcmp(argv[i], "-vads"))
{
return usage(argv[0]);
}
else
{
ada_compiler = VADS;
}
break;
case 'g':
if(strcmp(argv[i], "-gnat"))
{
return usage(argv[0]);
}
else
{
ada_compiler = GNAT;
}
break;
case 'i':
if(!strcmp(argv[i], "-icc"))
{
ada_compiler = ICC;
}
else
{
return usage(argv[0]);
}
break;
case 'n':
if(!strcmp(argv[i], "-noref"))
{
output_refs = 0;
}
else
{
return usage(argv[0]);
}
break;
case 's':
if(!strcmp(argv[i], "-sih"))
{
import_decls = 0;
}
else if(!strcmp(argv[i], "-src"))
{
suppress_record_repspec = 1;
repspec_flag = 0;
}
else
{
return usage(argv[0]);
}
break;
case 'r':
if(!strcmp(argv[i], "-rational"))
{
ada_compiler = Rational;
}
else if(!strcmp(argv[i], "-rrc"))
{
repspec_flag = 1;
}
else
{
return usage(argv[0]);
}
break;
case 'p':
if(!strcmp(argv[i], "-pp") && (i < argc))
{
predef_pkg = argv[++i];
}
else
{
return usage(argv[0]);
}
break;
case 'P':
configure_project(&argv[i][2]);
break;
case '9':
if(!strcmp(argv[i], "-95"))
{
ada_version = 1995;
}
else
{
return usage(argv[0]);
}
break;
default:
return usage(argv[0]);
}
}
else if(fstart == 0)
{
fstart = i;
}
}
if(!configured)
configure_project(0);
if(show)
{
cpp_show_predefines();
}
if(fstart == 0)
{
return usage(argv[0]);
}
type_init();
for(i = fstart; i < argc; i++)
{
if(cpp_open(argv[i]) != 0)
{
syserr(argv[i], 0);
continue;
}
yylex_init();
yyparse();
cpp_cleanup();
}
gen();
return !!Num_Errors;
}