2 * Samba Unix/Linux SMB client library
4 * Copyright (C) Gregor Beck 2010
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 * @author Gregor Beck <gb@sernet.de>
24 * @brief A simple recursive parser.
28 #include "system/locale.h"
33 bool srprs_skipws(const char** ptr) {
34 while (isspace(**ptr))
39 bool srprs_char(const char** ptr, char c) {
47 bool srprs_str(const char** ptr, const char* str, ssize_t len)
52 if (memcmp(*ptr, str, len) == 0) {
59 bool srprs_charset(const char** ptr, const char* set, cbuf* oss)
61 const char* p = strchr(set, **ptr);
62 if (p != NULL && *p != '\0') {
63 cbuf_putc(oss, **ptr);
70 bool srprs_charsetinv(const char** ptr, const char* set, cbuf* oss)
72 if ((**ptr != '\0') && (strchr(set, **ptr) == NULL)) {
73 cbuf_putc(oss, **ptr);
82 bool srprs_quoted_string(const char** ptr, cbuf* str, bool* cont)
84 const char* pos = *ptr;
85 const size_t spos = cbuf_getpos(str);
87 if (cont == NULL || *cont == false) {
88 if (!srprs_char(&pos, '\"'))
93 while (srprs_charsetinv(&pos, "\\\"", str))
114 if (!srprs_charset(&pos, "\\\"", str))
124 cbuf_setpos(str, spos);
128 bool srprs_hex(const char** ptr, size_t len, unsigned* u)
130 const char *str = *ptr;
131 const char *pos = *ptr;
136 assert((len >= 1) && (len <= 8));
138 for (i=0; i<len; i++) {
139 if (!srprs_charset(&pos, "0123456789abcdefABCDEF", NULL)) {
145 ret = sscanf(buf, "%8x", u);
155 bool srprs_nl(const char** ptr, cbuf* nl)
157 static const char CRLF[] = "\r\n";
158 if (srprs_str(ptr, CRLF, sizeof(CRLF) - 1)) {
159 cbuf_puts(nl, CRLF, sizeof(CRLF) - 1);
162 return srprs_charset(ptr, "\n\r", nl);
165 bool srprs_eos(const char** ptr)
167 return (**ptr == '\0');
170 bool srprs_eol(const char** ptr, cbuf* nl)
172 return srprs_eos(ptr) || srprs_nl(ptr, nl);
175 bool srprs_line(const char** ptr, cbuf* str)
177 while (srprs_charsetinv(ptr, "\n\r", str))
182 bool srprs_quoted(const char** ptr, cbuf* str)
184 const char* pos = *ptr;
185 const size_t spos = cbuf_getpos(str);
187 if (!srprs_char(&pos, '"')) {
192 while (srprs_charsetinv(&pos, "\\\"", str))
204 if (!srprs_charset(&pos, "\\\"", str)) {
206 if (!srprs_hex(&pos, 2, &u)) {
218 cbuf_setpos(str, spos);