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.
31 bool srprs_skipws(const char** ptr) {
32 while (isspace(**ptr))
37 bool srprs_char(const char** ptr, char c) {
45 bool srprs_str(const char** ptr, const char* str, size_t len)
50 if (memcmp(*ptr, str, len) == 0) {
57 bool srprs_charset(const char** ptr, const char* set, cbuf* oss)
59 const char* p = strchr(set, **ptr);
60 if (p != NULL && *p != '\0') {
61 cbuf_putc(oss, **ptr);
68 bool srprs_charsetinv(const char** ptr, const char* set, cbuf* oss)
70 if ((**ptr != '\0') && (strchr(set, **ptr) == NULL)) {
71 cbuf_putc(oss, **ptr);
80 bool srprs_quoted_string(const char** ptr, cbuf* str, bool* cont)
82 const char* pos = *ptr;
83 const size_t spos = cbuf_getpos(str);
85 if (cont == NULL || *cont == false) {
86 if (!srprs_char(&pos, '\"'))
91 while (srprs_charsetinv(&pos, "\\\"", str))
112 if (!srprs_charset(&pos, "\\\"", str))
122 cbuf_setpos(str, spos);
126 bool srprs_hex(const char** ptr, size_t len, unsigned* u)
128 static const char* FMT[] = {
129 "%1x","%2x","%3x","%4x","%5x","%6x","%7x","%8x",
130 "%9x","%10x","%11x","%12x","%13x","%14x","%15x","%16x"
133 const char* pos = *ptr;
138 && (len <= 2*sizeof(unsigned))
139 && (len <= sizeof(FMT)/sizeof(const char*)));
141 for (i=0; i<len; i++) {
142 if (!srprs_charset(&pos, "0123456789abcdefABCDEF", NULL)) {
147 ret = sscanf(*ptr, FMT[len-1], u);
157 bool srprs_nl(const char** ptr, cbuf* nl)
159 static const char CRLF[] = "\r\n";
160 if (srprs_str(ptr, CRLF, sizeof(CRLF) - 1)) {
161 cbuf_puts(nl, CRLF, sizeof(CRLF) - 1);
164 return srprs_charset(ptr, "\n\r", nl);
167 bool srprs_eos(const char** ptr)
169 return (**ptr == '\0');
172 bool srprs_eol(const char** ptr, cbuf* nl)
174 return srprs_eos(ptr) || srprs_nl(ptr, nl);
177 bool srprs_line(const char** ptr, cbuf* str)
179 while (srprs_charsetinv(ptr, "\n\r", str))
184 bool srprs_quoted(const char** ptr, cbuf* str)
186 const char* pos = *ptr;
187 const size_t spos = cbuf_getpos(str);
189 if (!srprs_char(&pos, '"')) {
194 while (srprs_charsetinv(&pos, "\\\"", str))
206 if (!srprs_charset(&pos, "\\\"", str)) {
208 if (!srprs_hex(&pos, 2, &u)) {
220 cbuf_setpos(str, spos);