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 3 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, see <http://www.gnu.org/licenses/>.
28 #define ERTFBUFSIZE 8192
31 static ERTFState ertf_read_line (ERTFParser *parser);
32 static void ertf_append_char (ERTFParser *parser,
35 static ERTFState ertf_parse_tag (ERTFParser *parser);
36 static void ertf_get_parenthesis (ERTFParser *parser,
40 ERTFParser *ertf_parser_new(FILE *fp, CodeConverter *conv)
44 g_return_val_if_fail(fp != NULL, NULL);
45 g_return_val_if_fail(conv != NULL, NULL);
47 parser = g_new0(ERTFParser, 1);
50 parser->str = g_string_new(NULL);
51 parser->buf = g_string_new(NULL);
52 parser->bufp = parser->buf->str;
53 parser->newline = TRUE;
54 parser->empty_line = TRUE;
55 parser->space = FALSE;
61 void ertf_parser_destroy(ERTFParser *parser)
63 g_string_free(parser->str, TRUE);
64 g_string_free(parser->buf, TRUE);
68 gchar *ertf_parse(ERTFParser *parser)
70 parser->state = ERTF_NORMAL;
71 g_string_truncate(parser->str, 0);
73 if (*parser->bufp == '\0') {
74 g_string_truncate(parser->buf, 0);
75 parser->bufp = parser->buf->str;
76 if (ertf_read_line(parser) == ERTF_EOF)
80 while (*parser->bufp != '\0') {
81 switch (*parser->bufp) {
83 if (parser->str->len == 0)
84 ertf_parse_tag(parser);
86 return parser->str->str;
90 if (parser->bufp[0] == '\r' && parser->bufp[1] == '\n')
94 /* When not pre (not <nofill>), 1 CRLF = SPACE, N>1 CRLF = N-1 CRLF*/
95 if (!parser->newline) {
96 parser->newline = TRUE;
104 ertf_append_char(parser, *parser->bufp++);
108 return parser->str->str;
111 static ERTFState ertf_read_line(ERTFParser *parser)
113 gchar buf[ERTFBUFSIZE];
114 gchar buf2[ERTFBUFSIZE];
117 if (fgets(buf, sizeof(buf), parser->fp) == NULL) {
118 parser->state = ERTF_EOF;
122 if (conv_convert(parser->conv, buf2, sizeof(buf2), buf) < 0) {
123 g_warning("ertf_read_line(): code conversion failed\n");
125 index = parser->bufp - parser->buf->str;
127 g_string_append(parser->buf, buf);
129 parser->bufp = parser->buf->str + index;
134 index = parser->bufp - parser->buf->str;
136 g_string_append(parser->buf, buf2);
138 parser->bufp = parser->buf->str + index;
143 static void ertf_append_char(ERTFParser *parser, gchar ch)
145 GString *str = parser->str;
147 if (!parser->pre && parser->space) {
149 g_string_append_c(str, ' ');
150 parser->space = FALSE;
153 g_string_append_c(str, ch);
155 parser->empty_line = FALSE;
158 parser->empty_line = TRUE;
160 parser->newline = TRUE;
162 parser->newline = FALSE;
165 static ERTFState ertf_parse_tag(ERTFParser *parser)
167 gchar buf[ERTFBUFSIZE];
170 ertf_get_parenthesis (parser, buf, sizeof(buf));
172 for (p = buf; *p != '\0'; p++) {
173 if (isspace (*(guchar *)p)) {
179 parser->state = ERTF_UNKNOWN;
180 if (buf[0] == '\0') return parser->state;
184 if (!strcmp(buf, "nofill")) {
186 parser->state = ERTF_NOFILL;
188 else if (!strcmp(buf, "/nofill")) {
190 parser->state = ERTF_NORMAL;
193 return parser->state;
196 static void ertf_get_parenthesis(ERTFParser *parser, gchar *buf, gint len)
201 g_return_if_fail(*parser->bufp == '<');
204 if (!g_ascii_strncasecmp(parser->bufp, "<param>", 4)) {
206 while ((p = strstr(parser->bufp, "</param>")) == NULL)
207 if (ertf_read_line(parser) == ERTF_EOF) return;
208 parser->bufp = p + 8;
212 while ((p = strchr(parser->bufp, '>')) == NULL)
213 if (ertf_read_line(parser) == ERTF_EOF) return;
215 strncpy2(buf, parser->bufp, MIN(p - parser->bufp + 1, len));
216 parser->bufp = p + 1;