WEBVTT_INTERN webvtt_status
webvtt_tag_state( webvtt_byte **position, webvtt_token_state *token_state,
webvtt_string *result )
{
for( ; *token_state == TAG; (*position)++ ) {
if( **position == UTF8_TAB || **position == UTF8_LINE_FEED ||
**position == UTF8_CARRIAGE_RETURN || **position == UTF8_FORM_FEED ||
**position == UTF8_SPACE ) {
*token_state = START_TAG_ANNOTATION;
} else if( webvtt_isdigit( **position ) ) {
CHECK_MEMORY_OP( webvtt_string_putc( result, **position ) );
*token_state = TIME_STAMP_TAG;
} else {
switch( **position ) {
case UTF8_FULL_STOP:
*token_state = START_TAG_CLASS;
break;
case UTF8_SOLIDUS:
*token_state = END_TAG;
break;
case UTF8_GREATER_THAN:
return WEBVTT_SUCCESS;
break;
case UTF8_NULL_BYTE:
return WEBVTT_SUCCESS;
break;
default:
CHECK_MEMORY_OP( webvtt_string_putc( result, **position ) );
*token_state = START_TAG;
}
}
}
return WEBVTT_UNFINISHED;
}
WEBVTT_INTERN webvtt_status
webvtt_tag_state( webvtt_byte **position, webvtt_token_state *token_state,
webvtt_string *result )
{
for( ; *token_state == TAG; (*position)++ ) {
if( **position == '\t' || **position == '\n' ||
**position == '\r' || **position == '\f' ||
**position == ' ' ) {
*token_state = START_TAG_ANNOTATION;
} else if( webvtt_isdigit( **position ) ) {
CHECK_MEMORY_OP( webvtt_string_putc( result, **position ) );
*token_state = TIME_STAMP_TAG;
} else {
switch( **position ) {
case '.':
*token_state = START_TAG_CLASS;
break;
case '/':
*token_state = END_TAG;
break;
case '>':
return WEBVTT_SUCCESS;
break;
case '\0':
return WEBVTT_SUCCESS;
break;
default:
CHECK_MEMORY_OP( webvtt_string_putc( result, **position ) );
*token_state = START_TAG;
}
}
}
return WEBVTT_UNFINISHED;
}
WEBVTT_EXPORT webvtt_status
webvtt_cue_set_size( webvtt_cue *cue, const char *value )
{
int digits = 0;
webvtt_int64 number;
const char *c;
if( !cue || !value ) {
return WEBVTT_INVALID_PARAM;
}
/**
* 1. If value contains any characters other than U+0025 PERCENT SIGN
* characters (%) and ASCII digits, then jump to the step labeled next
* setting.
*/
for( c = value; *c; ++c ) {
if( webvtt_isdigit( *c ) ) {
++digits;
} else if( *c == '%' ) {
} else {
return WEBVTT_BAD_SIZE;
}
}
/**
* 2. If value does not contain at least one ASCII digit, then jump to the
* step labeled next setting.
*/
if( !digits ) {
return WEBVTT_BAD_SIZE;
}
/**
* 3. If any character in value other than the last character is a U+0025
* PERCENT SIGN character (%), then jump to the step labeled next setting.
*/
if( ( c = strchr( value, '%' ) ) && ( c[1] != '\0' ) ) {
return WEBVTT_BAD_SIZE;
}
/**
* 4. If the last character in value is not a U+0025 PERCENT SIGN character
* (%), then jump to the step labeled next setting.
*/
if( !c ) {
return WEBVTT_BAD_SIZE;
}
/**
* 5. Ignoring the trailing percent sign, interpret value as an integer, and
* let number be that number.
*/
c = value;
number = webvtt_parse_int( &c, &digits );
/**
* 6. If number is not in the range 0 <= number <= 100, then jump to the step
* labeled next setting.
*/
if( number > 100 ) {
return WEBVTT_BAD_SIZE;
}
/* 7. Let cue's text track cue size be number */
cue->settings.size = (int)number;
if( cue->flags & CUE_HAVE_SIZE ) {
return WEBVTT_ALREADY_SIZE;
}
cue->flags |= CUE_HAVE_SIZE;
return WEBVTT_SUCCESS;
}
WEBVTT_EXPORT webvtt_status
webvtt_cue_set_line( webvtt_cue *cue, const char *value )
{
webvtt_int64 number;
int digits = 0;
const char *c;
if( !cue || !value ) {
return WEBVTT_INVALID_PARAM;
}
/**
* 1. If value contains any characters other than U+002D HYPHEN-MINUS
* characters (-), U+0025 PERCENT SIGN characters (%), and ASCII digits,
* then jump to the step labeled next setting
*/
for( c = value; *c; ++c ) {
if( webvtt_isdigit( *c ) ) {
++digits;
} else if( *c == '-' || *c == '%' ) {
} else {
return WEBVTT_BAD_LINE;
}
}
/**
* 2. If value does not contain at least one ASCII digit, then jump to the
* step labeled next setting.
*/
if( digits == 0 ) {
return WEBVTT_BAD_LINE;
}
if( strchr( value + 1, '-' ) ) {
/**
* 3. If any character in value other than the first character is a U+002D
* HYPHEN-MINUS character (-), then jump to the step labeled next setting.
*/
return WEBVTT_BAD_LINE;
}
if( ( c = strchr( value, '%' ) ) && ( ( c[1] != '\0' ) || *value == '-' ) ) {
/**
* 4. If any character in value other than the last character is a U+0025
* PERCENT SIGN character (%), then jump to the step labeled next setting.
*
* 5. If the first character in value is a U+002D HYPHEN-MINUS character (-)
* and the last character in value is a U+0025 PERCENT SIGN character (%),
* then jump to the step labeled next setting.
*/
return WEBVTT_BAD_LINE;
}
/**
* Ignoring the trailing percent sign, if any, interpret value as a
* (potentially signed) integer and let number be that number.
*/
c = value;
number = webvtt_parse_int( &c, &digits );
if( *c == '%' ) {
/**
* 7. If the last character in value is a U+0025 PERCENT SIGN character (%),
* but number is not in the range 0 < number < 100, then jump to the step
* labeled next setting.
*/
if( number > 100 ) {
return WEBVTT_BAD_LINE;
}
/**
* 9. If the last character in value is a U+0025 PERCENT SIGN character (%),
* then let cue's text track cue snap-to-lines flag be false.
*/
cue->snap_to_lines = 0;
} else {
/* 9. ... Otherwise, let it be true. */
cue->snap_to_lines = 1;
}
/* 8. Let cue's text track cue line position be number */
cue->settings.line = (int)number;
if( cue->flags & CUE_HAVE_LINE ) {
return WEBVTT_ALREADY_LINE;
}
cue->flags |= CUE_HAVE_LINE;
return WEBVTT_SUCCESS;
}