static void list_top(char *fn)
{
int status,done;
#define BUFLEN 256
char buf[BUFLEN];
gmx_cpp_t handle;
char *cppopts[] = { NULL };
status = cpp_open_file(fn,&handle,cppopts);
if (status != 0)
gmx_fatal(FARGS,cpp_error(&handle,status));
do {
status = cpp_read_line(&handle,BUFLEN,buf);
done = (status == eCPP_EOF);
if (!done) {
if (status != eCPP_OK)
gmx_fatal(FARGS,cpp_error(&handle,status));
else
printf("%s\n",buf);
}
} while (!done);
status = cpp_close_file(&handle);
if (status != eCPP_OK)
gmx_fatal(FARGS,cpp_error(&handle,status));
}
static int
process_directive(gmx_cpp_t *handlep, const char *dname, const char *dval)
{
gmx_cpp_t handle = (gmx_cpp_t)*handlep;
int i, i0, len, status;
unsigned int i1;
char *inc_fn, *name;
const char *ptr;
int bIfdef, bIfndef;
/* #ifdef or ifndef statement */
bIfdef = (strcmp(dname, "ifdef") == 0);
bIfndef = (strcmp(dname, "ifndef") == 0);
if (bIfdef || bIfndef)
{
if ((handle->nifdef > 0) && (handle->ifdefs[handle->nifdef-1] != eifTRUE))
{
handle->nifdef++;
srenew(handle->ifdefs, handle->nifdef);
handle->ifdefs[handle->nifdef-1] = eifIGNORE;
}
else
{
snew(name, strlen(dval)+1);
sscanf(dval, "%s", name);
for (i = 0; (i < ndef); i++)
{
if (strcmp(defs[i].name, name) == 0)
{
break;
}
}
handle->nifdef++;
srenew(handle->ifdefs, handle->nifdef);
if ((bIfdef && (i < ndef)) || (bIfndef && (i == ndef)))
{
handle->ifdefs[handle->nifdef-1] = eifTRUE;
}
else
{
handle->ifdefs[handle->nifdef-1] = eifFALSE;
}
sfree(name);
}
return eCPP_OK;
}
/* #else statement */
if (strcmp(dname, "else") == 0)
{
if (handle->nifdef <= 0)
{
return eCPP_SYNTAX;
}
if (handle->ifdefs[handle->nifdef-1] == eifTRUE)
{
handle->ifdefs[handle->nifdef-1] = eifFALSE;
}
else if (handle->ifdefs[handle->nifdef-1] == eifFALSE)
{
handle->ifdefs[handle->nifdef-1] = eifTRUE;
}
return eCPP_OK;
}
/* #endif statement */
if (strcmp(dname, "endif") == 0)
{
if (handle->nifdef <= 0)
{
return eCPP_SYNTAX;
}
handle->nifdef--;
return eCPP_OK;
}
/* Check whether we're not ifdeffed out. The order of this statement
is important. It has to come after #ifdef, #else and #endif, but
anything else should be ignored. */
if (is_ifdeffed_out(handle))
{
return eCPP_OK;
}
/* Check for include statements */
if (strcmp(dname, "include") == 0)
{
len = -1;
i0 = 0;
for (i1 = 0; (i1 < strlen(dval)); i1++)
{
if ((dval[i1] == '"') || (dval[i1] == '<') || (dval[i1] == '>'))
{
if (len == -1)
{
i0 = i1+1;
len = 0;
}
else
{
break;
}
}
else if (len >= 0)
{
len++;
}
}
if (len == -1)
{
return eCPP_SYNTAX;
}
snew(inc_fn, len+1);
strncpy(inc_fn, dval+i0, len);
inc_fn[len] = '\0';
if (debug)
{
fprintf(debug, "Going to open include file '%s' i0 = %d, strlen = %d\n",
inc_fn, i0, len);
}
/* Open include file and store it as a child in the handle structure */
status = cpp_open_file(inc_fn, &(handle->child), NULL);
sfree(inc_fn);
if (status != eCPP_OK)
{
handle->child = NULL;
return status;
}
/* Make a linked list of open files and move on to the include file */
handle->child->parent = handle;
*handlep = handle->child;
handle = *handlep;
return eCPP_OK;
}
/* #define statement */
if (strcmp(dname, "define") == 0)
{
/* Split it into name and value. */
ptr = dval;
while ((*ptr != '\0') && !isspace(*ptr))
{
ptr++;
}
name = gmx_strndup(dval, ptr - dval);
while ((*ptr != '\0') && isspace(*ptr))
{
ptr++;
}
add_define(name, ptr);
sfree(name);
return eCPP_OK;
}
/* #undef statement */
if (strcmp(dname, "undef") == 0)
{
snew(name, strlen(dval)+1);
sscanf(dval, "%s", name);
for (i = 0; (i < ndef); i++)
{
if (strcmp(defs[i].name, name) == 0)
{
sfree(defs[i].name);
sfree(defs[i].def);
break;
}
}
sfree(name);
for (; (i < ndef-1); i++)
{
defs[i].name = defs[i+1].name;
defs[i].def = defs[i+1].def;
}
ndef--;
return eCPP_OK;
}
/* If we haven't matched anything, this is an unknown directive */
return eCPP_SYNTAX;
}
