static NEOERR* _hdf_read_string (HDF *hdf, const char **str, STRING *line,
const char *path, int *lineno,
int include_handle)
{
NEOERR *err;
HDF *lower;
char *s;
char *name, *value;
HDF_ATTR *attr = NULL;
while (**str != '\0')
{
/* Reset string length, but don't free the reserved buffer */
line->len = 0;
err = _copy_line_advance(str, line);
if (err) return nerr_pass(err);
attr = NULL;
(*lineno)++;
s = line->buf;
SKIPWS(s);
if (!strncmp(s, "#include ", 9) && include_handle != INCLUDE_IGNORE)
{
if (include_handle == INCLUDE_ERROR)
{
return nerr_raise (NERR_PARSE,
"[%d]: #include not supported in string parse",
*lineno);
}
else if (include_handle < INCLUDE_MAX_DEPTH)
{
int l;
s += 9;
name = neos_strip(s);
l = strlen(name);
if (name[0] == '"' && name[l-1] == '"')
{
name[l-1] = '\0';
name++;
}
err = hdf_read_file_internal(hdf, name, include_handle + 1);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else
{
return nerr_raise (NERR_MAX_RECURSION,
"[%d]: Too many recursion levels.",
*lineno
);
}
}
else if (s[0] == '#')
{
/* comment: pass */
}
else if (s[0] == '}') /* up */
{
s = neos_strip(s);
if (strcmp(s, "}"))
{
err = nerr_raise(NERR_PARSE,
"[%s:%d] Trailing garbage on line following }: %s", path, *lineno,
line->buf);
return err;
}
return STATUS_OK;
}
else if (s[0])
{
/* Valid hdf name is [0-9a-zA-Z_.]+ */
name = s;
while (*s && (isalnum(*s) || *s == '_' || *s == '.' || *(unsigned char*)s > 127)) s++;
SKIPWS(s);
if (s[0] == '[') /* attributes */
{
*s = '\0';
name = neos_strip(name);
s++;
err = parse_attr(&s, &attr);
if (err)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
SKIPWS(s);
}
if (s[0] == '=') /* assignment */
{
*s = '\0';
name = neos_strip(name);
s++;
value = neos_strip(s);
err = _set_value (hdf, name, value, 1, 1, 0, attr, NULL);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == ':' && s[1] == '=') /* copy */
{
*s = '\0';
name = neos_strip(name);
s+=2;
value = neos_strip(s);
value = hdf_get_value(hdf->top, value, "");
err = _set_value (hdf, name, value, 1, 1, 0, attr, NULL);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == ':') /* link */
{
*s = '\0';
name = neos_strip(name);
s++;
value = neos_strip(s);
err = _set_value (hdf, name, value, 1, 1, 1, attr, NULL);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == '{') /* deeper */
{
*s = '\0';
name = neos_strip(name);
lower = hdf_get_obj (hdf, name);
if (lower == NULL)
{
err = _set_value (hdf, name, NULL, 1, 1, 0, attr, &lower);
}
else
{
err = _set_value (lower, NULL, lower->value, 1, 1, 0, attr, NULL);
}
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
err = _hdf_read_string (lower, str, line, path, lineno, include_handle);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == '<' && s[1] == '<') /* multi-line assignment */
{
char *m;
int msize = 0;
int mmax = 128;
int l;
*s = '\0';
name = neos_strip(name);
s+=2;
value = neos_strip(s);
l = strlen(value);
if (l == 0)
{
err = nerr_raise(NERR_PARSE,
"[%s:%d] No multi-assignment terminator given: %s", path, *lineno,
line->buf);
return err;
}
m = (char *) malloc (mmax * sizeof(char));
if (m == NULL)
{
return nerr_raise(NERR_NOMEM,
"[%s:%d] Unable to allocate memory for multi-line assignment to %s",
path, *lineno, name);
}
while (_copy_line (str, m+msize, mmax-msize) != 0)
{
(*lineno)++;
if (!strncmp(value, m+msize, l) && isspace(m[msize+l]))
{
m[msize] = '\0';
break;
}
msize += strlen(m+msize);
if (msize + l + 10 > mmax)
{
void *new_ptr;
mmax += 128;
new_ptr = realloc (m, mmax * sizeof(char));
if (new_ptr == NULL)
{
free(m);
return nerr_raise(NERR_NOMEM,
"[%s:%d] Unable to allocate memory for multi-line assignment to %s: size=%d",
path, *lineno, name, mmax);
}
m = (char *) new_ptr;
}
}
err = _set_value (hdf, name, m, 0, 1, 0, attr, NULL);
if (err != STATUS_OK)
{
free (m);
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else
{
err = nerr_raise(NERR_PARSE, "[%s:%d] Unable to parse line %s", path,
*lineno, line->buf);
return err;
}
}
}
return STATUS_OK;
}
NEOERR* hdf_read_file (HDF *hdf, const char *path)
{
NEOERR *err;
err = hdf_read_file_internal (hdf, path, INCLUDE_FILE);
return nerr_pass(err);
}
static NEOERR* _hdf_read_string (HDF *hdf, const char **str, STRING *line,
const char *path, int *lineno,
int include_handle, int expect_end_brace) {
NEOERR *err;
HDF *lower;
char *s;
char *name, *value;
HDF_ATTR *attr = NULL;
while (**str != '\0')
{
/* Reset string length, but don't free the reserved buffer */
line->len = 0;
err = _copy_line_advance(str, line);
if (err) return nerr_pass(err);
attr = NULL;
(*lineno)++;
s = line->buf;
SKIPWS(s);
if ((!strncmp(s, "#include ", 9) || !strncmp(s, "-include ", 9)) && include_handle != INCLUDE_IGNORE)
{
int required = !strncmp(s, "#include ", 9);
if (include_handle == INCLUDE_ERROR)
{
return nerr_raise (NERR_PARSE,
"[%d]: #include not supported in string parse",
*lineno);
}
else if (include_handle < INCLUDE_MAX_DEPTH)
{
int l;
s += 9;
name = neos_strip(s);
l = strlen(name);
if (name[0] == '"' && name[l-1] == '"')
{
name[l-1] = '\0';
name++;
}
char fullpath[PATH_MAX];
if (name[0] != '/') {
memset(fullpath, 0, PATH_MAX);
char *p = strrchr(path, '/');
if (p == NULL) {
char pwd[PATH_MAX];
memset(pwd, 0, PATH_MAX);
getcwd(pwd, PATH_MAX);
snprintf(fullpath, PATH_MAX, "%s/%s", pwd, name);
} else {
int dir_len = p - path + 1;
snprintf(fullpath, PATH_MAX, "%s", path);
snprintf(fullpath + dir_len, PATH_MAX - dir_len, "%s", name);
}
name = fullpath;
}
err = hdf_read_file_internal(hdf, name, include_handle + 1);
if (err != STATUS_OK && required)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else {
return nerr_raise (NERR_MAX_RECURSION,
"[%d]: Too many recursion levels.",
*lineno
);
}
}
else if (s[0] == '#')
{
/* comment: pass */
}
else if (s[0] == '}') /* up */
{
s = neos_strip(s);
if (strcmp(s, "}"))
{
err = nerr_raise(NERR_PARSE,
"[%s:%d] Trailing garbage on line following }: %s", path, *lineno,
line->buf);
return err;
}
return STATUS_OK;
}
else if (s[0])
{
/* Valid hdf name is [0-9a-zA-Z_.]+ */
int splice = *s == '@';
if (splice) s++;
name = s;
while (*s && (isalnum(*s) || *s == '_' || *s == '.' || *s == '*')) s++;
SKIPWS(s);
char num[16];
static int counter = 0;
if (*name == '*') {
snprintf(num, sizeof(num), "%d", counter++);
name = num;
}
if (s[0] == '[') /* attributes */
{
*s = '\0';
name = neos_strip(name);
s++;
err = parse_attr(&s, &attr);
if (err)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
SKIPWS(s);
}
if (splice) {
name = neos_strip(name);
HDF *h = hdf_get_obj(hdf->top, name);
if (h) {
HDF *c = hdf_obj_child(h);
while (c) {
err = hdf_copy (hdf, hdf_obj_name(c), c);
if (err != STATUS_OK) break;
c = hdf_obj_next(c);
}
}
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
} else if (s[0] == '=') /* assignment */
{
*s = '\0';
name = neos_strip(name);
s++;
value = neos_strip(s);
err = _set_value (hdf, name, value, 1, 1, 0, attr, NULL);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == ':' && s[1] == '=') /* copy */
{
*s = '\0';
name = neos_strip(name);
s+=2;
value = neos_strip(s);
HDF *h = hdf_get_obj(hdf->top, value);
if (!h)
{
err = nerr_raise(NERR_PARSE,
"[%s:%d] Failed to copy a node that is not loaded "
"yet: %s", path, *lineno, value);
return err;
}
err = hdf_copy(hdf, name, h);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == '!' && s[1] == '=') /* exec */
{
*s = '\0';
name = neos_strip(name);
s+=2;
value = neos_strip(s);
FILE *f = popen(value, "r");
if (f == NULL)
{
err = nerr_raise(NERR_PARSE,
"[%s:%d] Failed to exec specified command: %s",
path, *lineno, line->buf);
return err;
}
char *content = _read_file(f);
fclose(f);
int len = strlen(content);
if (len > 0 && content[len - 1] == '\n') {
content[len - 1] = '\0'; // remove \n artifact
}
err = _set_value (hdf, name, content, 1, 1, 0, attr, NULL);
free(content);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == ':') /* link */
{
*s = '\0';
name = neos_strip(name);
s++;
value = neos_strip(s);
err = _set_value (hdf, name, value, 1, 1, 1, attr, NULL);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == '{') /* deeper */
{
*s = '\0';
name = neos_strip(name);
lower = hdf_get_obj (hdf, name);
if (lower == NULL)
{
err = _set_value (hdf, name, NULL, 1, 1, 0, attr, &lower);
}
else
{
err = _set_value (lower, NULL, lower->value, 1, 1, 0, attr, NULL);
}
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
err = _hdf_read_string (lower, str, line, path, lineno, include_handle,
1);
if (err != STATUS_OK)
{
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else if (s[0] == '<' && s[1] == '<') /* multi-line assignment */
{
char *m;
int msize = 0;
int mmax = 128;
int l;
*s = '\0';
name = neos_strip(name);
s+=2;
value = neos_strip(s);
l = strlen(value);
if (l == 0)
{
err = nerr_raise(NERR_PARSE,
"[%s:%d] No multi-assignment terminator given: %s", path, *lineno,
line->buf);
return err;
}
m = (char *) malloc (mmax * sizeof(char));
if (m == NULL)
{
return nerr_raise(NERR_NOMEM,
"[%s:%d] Unable to allocate memory for multi-line assignment to %s",
path, *lineno, name);
}
while (_copy_line (str, m+msize, mmax-msize) != 0)
{
(*lineno)++;
if (!strncmp(value, m+msize, l) && isspace(m[msize+l]))
{
m[msize] = '\0';
break;
}
msize += strlen(m+msize);
if (msize + l + 10 > mmax)
{
void *new_ptr;
mmax += 128;
new_ptr = realloc (m, mmax * sizeof(char));
if (new_ptr == NULL)
{
free(m);
return nerr_raise(NERR_NOMEM,
"[%s:%d] Unable to allocate memory for multi-line assignment to %s: size=%d",
path, *lineno, name, mmax);
}
m = (char *) new_ptr;
}
}
err = _set_value (hdf, name, m, 0, 1, 0, attr, NULL);
if (err != STATUS_OK)
{
free (m);
return nerr_pass_ctx(err, "In file %s:%d", path, *lineno);
}
}
else
{
err = nerr_raise(NERR_PARSE, "[%s:%d] Unable to parse line %s", path,
*lineno, line->buf);
return err;
}
}
}
if (expect_end_brace) {
err = nerr_raise(NERR_PARSE, "[%s:%d] Missing matching }", path, *lineno);
return err;
}
return STATUS_OK;
}