2 * Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
4 * This file is part of libass.
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
28 #include "ass_library.h"
30 #include "ass_utils.h"
32 int mystrtoi(char **p, int *res)
36 temp_res = ass_strtod(*p, p);
37 *res = (int) (temp_res + (temp_res > 0 ? 0.5 : -0.5));
44 int mystrtoll(char **p, long long *res)
48 temp_res = ass_strtod(*p, p);
49 *res = (int) (temp_res + (temp_res > 0 ? 0.5 : -0.5));
56 int mystrtou32(char **p, int base, uint32_t *res)
59 *res = strtoll(*p, p, base);
66 int mystrtod(char **p, double *res)
69 *res = ass_strtod(*p, p);
76 int strtocolor(ASS_Library *library, char **q, uint32_t *res, int hex)
81 int base = hex ? 16 : 10;
86 ass_msg(library, MSGL_DBG2, "suspicious color format: \"%s\"\n", p);
88 if (*p == 'H' || *p == 'h') {
90 result = mystrtou32(&p, 16, &color);
92 result = mystrtou32(&p, base, &color);
96 unsigned char *tmp = (unsigned char *) (&color);
113 // Return a boolean value for a string
114 char parse_bool(char *str)
116 while (*str == ' ' || *str == '\t')
118 if (!strncasecmp(str, "yes", 3))
120 else if (strtol(str, NULL, 10) > 0)
125 void ass_msg(ASS_Library *priv, int lvl, char *fmt, ...)
129 priv->msg_callback(lvl, fmt, va, priv->msg_callback_data);
133 unsigned ass_utf8_get_char(char **str)
135 uint8_t *strp = (uint8_t *) * str;
136 unsigned c = *strp++;
137 unsigned mask = 0x80;
143 if (len <= 0 || len > 4)
146 while ((*strp & 0xc0) == 0x80) {
149 c = (c << 6) | (*strp++ & 0x3f);
153 *str = (char *) strp;
157 strp = (uint8_t *) * str;
159 *str = (char *) strp;
164 void *ass_guess_buffer_cp(ASS_Library *library, unsigned char *buffer,
165 int buflen, char *preferred_language,
168 const char **languages;
170 EncaAnalyser analyser;
171 EncaEncoding encoding;
172 char *detected_sub_cp = NULL;
175 languages = enca_get_languages(&langcnt);
176 ass_msg(library, MSGL_V, "ENCA supported languages");
177 for (i = 0; i < langcnt; i++) {
178 ass_msg(library, MSGL_V, "lang %s", languages[i]);
181 for (i = 0; i < langcnt; i++) {
184 if (strcasecmp(languages[i], preferred_language) != 0)
186 analyser = enca_analyser_alloc(languages[i]);
187 encoding = enca_analyse_const(analyser, buffer, buflen);
188 tmp = enca_charset_name(encoding.charset, ENCA_NAME_STYLE_ICONV);
189 if (tmp && encoding.charset != ENCA_CS_UNKNOWN) {
190 detected_sub_cp = strdup(tmp);
191 ass_msg(library, MSGL_INFO, "ENCA detected charset: %s", tmp);
193 enca_analyser_free(analyser);
198 if (!detected_sub_cp) {
199 detected_sub_cp = strdup(fallback);
200 ass_msg(library, MSGL_INFO,
201 "ENCA detection failed: fallback to %s", fallback);
204 return detected_sub_cp;