yy_get_next_buffer - try to read in a new buffer * * Returns a code representing an action: * EOB_ACT_LAST_MATCH - * EOB_ACT_CONTINUE_SCAN - continue scanning from current position * EOB_ACT_END_OF_FILE - end of file */
| 3978 | * EOB_ACT_END_OF_FILE - end of file |
| 3979 | */ |
| 3980 | static int yy_get_next_buffer (yyscan_t yyscanner) |
| 3981 | { |
| 3982 | struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; |
| 3983 | char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; |
| 3984 | char *source = yyg->yytext_ptr; |
| 3985 | int number_to_move, i; |
| 3986 | int ret_val; |
| 3987 | |
| 3988 | if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] ) |
| 3989 | YY_FATAL_ERROR( |
| 3990 | "fatal flex scanner internal error--end of buffer missed" ); |
| 3991 | |
| 3992 | if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) |
| 3993 | { /* Don't try to fill the buffer, so this is an EOF. */ |
| 3994 | if ( yyg->yy_c_buf_p - yyg->yytext_ptr - YY_MORE_ADJ == 1 ) |
| 3995 | { |
| 3996 | /* We matched a single character, the EOB, so |
| 3997 | * treat this as a final EOF. |
| 3998 | */ |
| 3999 | return EOB_ACT_END_OF_FILE; |
| 4000 | } |
| 4001 | |
| 4002 | else |
| 4003 | { |
| 4004 | /* We matched some text prior to the EOB, first |
| 4005 | * process it. |
| 4006 | */ |
| 4007 | return EOB_ACT_LAST_MATCH; |
| 4008 | } |
| 4009 | } |
| 4010 | |
| 4011 | /* Try to read more data. */ |
| 4012 | |
| 4013 | /* First move last chars to start of buffer. */ |
| 4014 | number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1); |
| 4015 | |
| 4016 | for ( i = 0; i < number_to_move; ++i ) |
| 4017 | *(dest++) = *(source++); |
| 4018 | |
| 4019 | if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) |
| 4020 | /* don't do the read, it's not guaranteed to return an EOF, |
| 4021 | * just force an EOF |
| 4022 | */ |
| 4023 | YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0; |
| 4024 | |
| 4025 | else |
| 4026 | { |
| 4027 | int num_to_read = |
| 4028 | YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; |
| 4029 | |
| 4030 | while ( num_to_read <= 0 ) |
| 4031 | { /* Not enough room in the buffer - grow it. */ |
| 4032 | |
| 4033 | /* just a shorter name for the current buffer */ |
| 4034 | YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE; |
| 4035 | |
| 4036 | int yy_c_buf_p_offset = |
| 4037 | (int) (yyg->yy_c_buf_p - b->yy_ch_buf); |
no test coverage detected