2 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999,2000 Hiroyuki Yamamoto
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 #define ERTFBUFSIZE 8192
32 static ERTFState ertf_read_line (ERTFParser *parser);
33 static void ertf_append_char (ERTFParser *parser,
36 static ERTFState ertf_parse_tag (ERTFParser *parser);
37 static void ertf_get_parenthesis (ERTFParser *parser,
41 ERTFParser *ertf_parser_new(FILE *fp, CodeConverter *conv)
45 g_return_val_if_fail(fp != NULL, NULL);
46 g_return_val_if_fail(conv != NULL, NULL);
48 parser = g_new0(ERTFParser, 1);
51 parser->str = g_string_new(NULL);
52 parser->buf = g_string_new(NULL);
53 parser->bufp = parser->buf->str;
54 parser->newline = TRUE;
55 parser->empty_line = TRUE;
56 parser->space = FALSE;
62 void ertf_parser_destroy(ERTFParser *parser)
64 g_string_free(parser->str, TRUE);
65 g_string_free(parser->buf, TRUE);
69 gchar *ertf_parse(ERTFParser *parser)
71 parser->state = ERTF_NORMAL;
72 g_string_truncate(parser->str, 0);
74 if (*parser->bufp == '\0') {
75 g_string_truncate(parser->buf, 0);
76 parser->bufp = parser->buf->str;
77 if (ertf_read_line(parser) == ERTF_EOF)
81 while (*parser->bufp != '\0') {
82 switch (*parser->bufp) {
84 if (parser->str->len == 0)
85 ertf_parse_tag(parser);
87 return parser->str->str;
91 if (parser->bufp[0] == '\r' && parser->bufp[1] == '\n')
95 /* When not pre (not <nofill>), 1 CRLF = SPACE, N>1 CRLF = N-1 CRLF*/
96 if (!parser->newline) {
97 parser->newline = TRUE;
105 ertf_append_char(parser, *parser->bufp++);
109 return parser->str->str;
112 static ERTFState ertf_read_line(ERTFParser *parser)
114 gchar buf[ERTFBUFSIZE];
115 gchar buf2[ERTFBUFSIZE];
118 if (fgets(buf, sizeof(buf), parser->fp) == NULL) {
119 parser->state = ERTF_EOF;
123 if (conv_convert(parser->conv, buf2, sizeof(buf2), buf) < 0) {
124 g_warning("ertf_read_line(): code conversion failed\n");
126 index = parser->bufp - parser->buf->str;
128 g_string_append(parser->buf, buf);
130 parser->bufp = parser->buf->str + index;
135 index = parser->bufp - parser->buf->str;
137 g_string_append(parser->buf, buf2);
139 parser->bufp = parser->buf->str + index;
144 static void ertf_append_char(ERTFParser *parser, gchar ch)
146 GString *str = parser->str;
148 if (!parser->pre && parser->space) {
150 g_string_append_c(str, ' ');
151 parser->space = FALSE;
154 g_string_append_c(str, ch);
156 parser->empty_line = FALSE;
159 parser->empty_line = TRUE;
161 parser->newline = TRUE;
163 parser->newline = FALSE;
166 static ERTFState ertf_parse_tag(ERTFParser *parser)
168 gchar buf[ERTFBUFSIZE];
171 ertf_get_parenthesis (parser, buf, sizeof(buf));
173 for (p = buf; *p != '\0'; p++) {
180 parser->state = ERTF_UNKNOWN;
181 if (buf[0] == '\0') return parser->state;
185 if (!strcmp(buf, "nofill")) {
187 parser->state = ERTF_NOFILL;
189 else if (!strcmp(buf, "/nofill")) {
191 parser->state = ERTF_NORMAL;
194 return parser->state;
197 static void ertf_get_parenthesis(ERTFParser *parser, gchar *buf, gint len)
202 g_return_if_fail(*parser->bufp == '<');
205 if (!g_strncasecmp(parser->bufp, "<param>", 4)) {
207 while ((p = strstr(parser->bufp, "</param>")) == NULL)
208 if (ertf_read_line(parser) == ERTF_EOF) return;
209 parser->bufp = p + 8;
213 while ((p = strchr(parser->bufp, '>')) == NULL)
214 if (ertf_read_line(parser) == ERTF_EOF) return;
216 strncpy2(buf, parser->bufp, MIN(p - parser->bufp + 1, len));
217 parser->bufp = p + 1;