static int
xcode (void *ctx, enum direction dir, char *in, char **buf_p, size_t *size_p)
{
hex_status_t status;
if (dir == ENCODE)
status = hex_encode (ctx, in, buf_p, size_p);
else
if (inplace) {
status = hex_decode_inplace (in);
*buf_p = in;
*size_p = strlen(in);
} else {
status = hex_decode (ctx, in, buf_p, size_p);
}
if (status == HEX_SUCCESS)
fputs (*buf_p, stdout);
return status;
}
tag_parse_status_t
parse_tag_line (void *ctx, char *line,
tag_op_flag_t flags,
char **query_string,
tag_op_list_t *tag_ops)
{
char *tok = line;
size_t tok_len = 0;
char *line_for_error;
tag_parse_status_t ret = TAG_PARSE_SUCCESS;
chomp_newline (line);
line_for_error = talloc_strdup (ctx, line);
if (line_for_error == NULL) {
fprintf (stderr, "Error: out of memory\n");
return TAG_PARSE_OUT_OF_MEMORY;
}
/* remove leading space */
while (*tok == ' ' || *tok == '\t')
tok++;
/* Skip empty and comment lines. */
if (*tok == '\0' || *tok == '#') {
ret = TAG_PARSE_SKIPPED;
goto DONE;
}
tag_op_list_reset (tag_ops);
/* Parse tags. */
while ((tok = strtok_len (tok + tok_len, " ", &tok_len)) != NULL) {
notmuch_bool_t remove;
char *tag;
/* Optional explicit end of tags marker. */
if (tok_len == 2 && strncmp (tok, "--", tok_len) == 0) {
tok = strtok_len (tok + tok_len, " ", &tok_len);
if (tok == NULL) {
ret = line_error (TAG_PARSE_INVALID, line_for_error,
"no query string after --");
goto DONE;
}
break;
}
/* Implicit end of tags. */
if (*tok != '-' && *tok != '+')
break;
/* If tag is terminated by NUL, there's no query string. */
if (*(tok + tok_len) == '\0') {
ret = line_error (TAG_PARSE_INVALID, line_for_error,
"no query string");
goto DONE;
}
/* Terminate, and start next token after terminator. */
*(tok + tok_len++) = '\0';
remove = (*tok == '-');
tag = tok + 1;
/* Maybe refuse illegal tags. */
if (! (flags & TAG_FLAG_BE_GENEROUS)) {
const char *msg = illegal_tag (tag, remove);
if (msg) {
ret = line_error (TAG_PARSE_INVALID, line_for_error, msg);
goto DONE;
}
}
/* Decode tag. */
if (hex_decode_inplace (tag) != HEX_SUCCESS) {
ret = line_error (TAG_PARSE_INVALID, line_for_error,
"hex decoding of tag %s failed", tag);
goto DONE;
}
if (tag_op_list_append (tag_ops, tag, remove)) {
ret = line_error (TAG_PARSE_OUT_OF_MEMORY, line_for_error,
"aborting");
goto DONE;
}
}
if (tok == NULL) {
/* use a different error message for testing */
ret = line_error (TAG_PARSE_INVALID, line_for_error,
"missing query string");
goto DONE;
}
/* tok now points to the query string */
*query_string = tok;
DONE:
talloc_free (line_for_error);
return ret;
}