scsh-conservatory
/
scsh-0.5
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

factored out arg parsing; have not gotten the static linker to support linking in a new one yet; probably no more work required here though

This commit is contained in:
bdc 1996-11-01 07:39:07 +00:00
parent 26b8de258e
commit 55a65c1b64
1 changed files with 72 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

127
main.c
View File

@ -58,15 +58,19 @@ static void usage(void)
}
static void bad_args(void) { usage(); exit(1); }
char ** process_args(char **argv,
long *heap_size,
long *stack_size,
char **object_file,
char **image_name);
main(argc, argv)
int argc; char **argv;
{
extern char **process_meta_arg(char **);
char **argp;
char *image_name = DEFAULT_IMAGE_NAME;
long heap_size = DEFAULT_HEAP_SIZE; /* in numbers of cells */
long stack_size = DEFAULT_STACK_SIZE; /* in numbers of cells */
char **argp;
long return_value;
extern void sysdep_init();
extern long required_init_space();
@ -89,61 +93,10 @@ main(argc, argv)
object_file = reloc_file = NULL;
/* Handle an initial \ <fname> meta-arg expansion. */
while ( *argv && streq(*argv, "\\") ) {
argv++;
if( !*argv ) bad_args(); /* die */
argv = process_meta_arg(argv);
if( !argv ) {
fprintf(stderr, "%s: \\ <fname> expansion failed.\n",
prog_name);
exit(1);
}
}
argv=process_args(argv,
&heap_size, &stack_size,
&object_file, &image_name);
for (; *argv; argv++)
if( argv[0][0] != '-' )
bad_args(); /* die */
else
switch (argv[0][1]) {
default:
bad_args(); /* die */
break;
case 'h': /* heapsize */
argv++;
if( !*argv ) bad_args(); /* die */
heap_size = atoi(*argv);
if( heap_size <= 0 ) bad_args();
break;
case 's':
argv++;
if( !*argv ) bad_args(); /* die */
stack_size = atoi(*argv);
if (stack_size <= 0) bad_args();
break;
case 'o': /* object file */
argv++;
if( !*argv ) bad_args(); /* die */
object_file = *argv;
break;
/* These switches terminate arg scanning. */
case 'i':
argv++;
if( !*argv ) bad_args(); /* die */
image_name = *argv++;
goto args_done;
case '-':
case 'a':
argv++;
goto args_done;
}
args_done:
for(argc=0, argp=argv; *argp; argc++, argp++); /* Recompute argc. */
sysdep_init();
@ -196,3 +149,65 @@ main(argc, argv)
return(return_value);
}
char ** process_args(char **argv,
long *pheap_size,
long *pstack_size,
char **pobject_file,
char **pimage_name) {
extern char **process_meta_arg(char **);
/* Handle an initial \ <fname> meta-arg expansion. */
while ( *argv && streq(*argv, "\\") ) {
argv++;
if( !*argv ) bad_args(); /* die */
argv = process_meta_arg(argv);
if( !argv ) {
fprintf(stderr, "%s: \\ <fname> expansion failed.\n",
prog_name);
exit(1);
}
}
for (; *argv; argv++)
if( argv[0][0] != '-' )
bad_args(); /* die */
else
switch (argv[0][1]) {
default:
bad_args(); /* die */
break;
case 'h': /* heapsize */
argv++;
if( !*argv ) bad_args(); /* die */
*pheap_size = atoi(*argv);
if( *pheap_size <= 0 ) bad_args();
break;
case 's':
argv++;
if( !*argv ) bad_args(); /* die */
*pstack_size = atoi(*argv);
if (*pstack_size <= 0) bad_args();
break;
case 'o': /* object file */
argv++;
if( !*argv ) bad_args(); /* die */
*pobject_file = *argv;
break;
/* These switches terminate arg scanning. */
case 'i':
argv++;
if( !*argv ) bad_args(); /* die */
*pimage_name = *argv++;
return argv;
case '-':
case 'a':
argv++;
return argv;
}
return argv;
}