Beispiel #1
0
struct bstr bstr_strip(struct bstr str)
{
    str = bstr_lstrip(str);
    while (str.len && mp_isspace(str.start[str.len - 1]))
        str.len--;
    return str;
}
Beispiel #2
0
// Skip whitespace and comments (assuming there are no line breaks)
static bool skip_ws(bstr *s)
{
    *s = bstr_lstrip(*s);
    if (bstr_startswith0(*s, "#"))
        s->len = 0;
    return s->len;
}
Beispiel #3
0
Datei: cue.c Projekt: ThreeGe/mpv
static char *read_quoted(void *talloc_ctx, struct bstr *data)
{
    *data = bstr_lstrip(*data);
    if (!eat_char(data, '"'))
        return NULL;
    int end = bstrchr(*data, '"');
    if (end < 0)
        return NULL;
    struct bstr res = bstr_splice(*data, 0, end);
    *data = bstr_cut(*data, end + 1);
    return bstrto0(talloc_ctx, res);
}
Beispiel #4
0
Datei: cue.c Projekt: ThreeGe/mpv
// Read a 2 digit unsigned decimal integer.
// Return -1 on failure.
static int read_int_2(struct bstr *data)
{
    *data = bstr_lstrip(*data);
    if (data->len && data->start[0] == '-')
        return -1;
    struct bstr s = *data;
    int res = (int)bstrtoll(s, &s, 10);
    if (data->len == s.len || data->len - s.len > 2)
        return -1;
    *data = s;
    return res;
}
Beispiel #5
0
double bstrtod(struct bstr str, struct bstr *rest)
{
    str = bstr_lstrip(str);
    char buf[101];
    int len = FFMIN(str.len, 100);
    memcpy(buf, str.start, len);
    buf[len] = 0;
    char *endptr;
    double r = strtod(buf, &endptr);
    if (rest)
        *rest = bstr_cut(str, endptr - buf);
    return r;
}
Beispiel #6
0
long long bstrtoll(struct bstr str, struct bstr *rest, int base)
{
    str = bstr_lstrip(str);
    char buf[51];
    int len = FFMIN(str.len, 50);
    memcpy(buf, str.start, len);
    buf[len] = 0;
    char *endptr;
    long long r = strtoll(buf, &endptr, base);
    if (rest)
        *rest = bstr_cut(str, endptr - buf);
    return r;
}
Beispiel #7
0
Datei: cue.c Projekt: ThreeGe/mpv
static enum cue_command read_cmd(struct bstr *data, struct bstr *out_params)
{
    struct bstr line = bstr_strip_linebreaks(bstr_getline(*data, data));
    line = bstr_lstrip(line);
    if (line.len == 0)
        return CUE_EMPTY;
    for (int n = 0; cue_command_strings[n].command != -1; n++) {
        struct bstr name = bstr0(cue_command_strings[n].text);
        if (bstr_startswith(line, name)) {
            struct bstr rest = bstr_cut(line, name.len);
            if (rest.len && !strchr(WHITESPACE, rest.start[0]))
                continue;
            if (out_params)
                *out_params = rest;
            return cue_command_strings[n].command;
        }
    }
    return CUE_ERROR;
}
Beispiel #8
0
static struct bstr read_quoted(struct bstr *data)
{
    *data = bstr_lstrip(*data);
    if (!eat_char(data, '"'))
        return (struct bstr) {0};
    int end = bstrchr(*data, '"');
    if (end < 0)
        return (struct bstr) {0};
    struct bstr res = bstr_splice(*data, 0, end);
    *data = bstr_cut(*data, end + 1);
    return res;
}

// Read a 2 digit unsigned decimal integer.
// Return -1 on failure.
static int read_int_2(struct bstr *data)
{
    *data = bstr_lstrip(*data);
    if (data->len && data->start[0] == '-')
        return -1;
    struct bstr s = *data;
    int res = (int)bstrtoll(s, &s, 10);
    if (data->len == s.len || data->len - s.len > 2)
        return -1;
    *data = s;
    return res;
}

static double read_time(struct bstr *data)
{
    struct bstr s = *data;
    bool ok = true;
    double t1 = read_int_2(&s);
    ok = eat_char(&s, ':') && ok;
    double t2 = read_int_2(&s);
    ok = eat_char(&s, ':') && ok;
    double t3 = read_int_2(&s);
    ok = ok && t1 >= 0 && t2 >= 0 && t3 >= 0;
    return ok ? t1 * 60.0 + t2 + t3 * SECS_PER_CUE_FRAME : 0;
}

static struct bstr skip_utf8_bom(struct bstr data)
{
    return bstr_startswith0(data, "\xEF\xBB\xBF") ? bstr_cut(data, 3) : data;
}

// Check if the text in data is most likely CUE data. This is used by the
// demuxer code to check the file type.
// data is the start of the probed file, possibly cut off at a random point.
bool mp_probe_cue(struct bstr data)
{
    bool valid = false;
    data = skip_utf8_bom(data);
    for (;;) {
        enum cue_command cmd = read_cmd(&data, NULL);
        // End reached. Since the line was most likely cut off, don't use the
        // result of the last parsing call.
        if (data.len == 0)
            break;
        if (cmd == CUE_ERROR)
            return false;
        if (cmd != CUE_EMPTY)
            valid = true;
    }
    return valid;
}