80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
/* This module defines the parse buffer and routines for setting/reading it */
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#include "postgres.h"
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#include "utils/elog.h"
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static char * PARSE_BUFFER;
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static char * PARSE_BUFFER_PTR;
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static unsigned int PARSE_BUFFER_SIZE;
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static unsigned int SCANNER_POS;
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void set_parse_buffer( char* s );
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void reset_parse_buffer( void );
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int read_parse_buffer( void );
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char * parse_buffer( void );
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char * parse_buffer_ptr( void );
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unsigned int parse_buffer_curr_char( void );
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unsigned int parse_buffer_size( void );
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unsigned int parse_buffer_pos( void );
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extern void cube_flush_scanner_buffer(void); /* defined in cubescan.l */
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void set_parse_buffer( char* s )
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{
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PARSE_BUFFER = s;
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PARSE_BUFFER_SIZE = strlen(s);
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if ( PARSE_BUFFER_SIZE == 0 ) {
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elog(ERROR, "cube_in: can't parse an empty string");
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}
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PARSE_BUFFER_PTR = PARSE_BUFFER;
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SCANNER_POS = 0;
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}
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void reset_parse_buffer( void )
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{
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PARSE_BUFFER_PTR = PARSE_BUFFER;
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SCANNER_POS = 0;
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cube_flush_scanner_buffer();
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}
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int read_parse_buffer( void )
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{
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int c;
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/*
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c = *PARSE_BUFFER_PTR++;
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SCANNER_POS++;
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*/
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c = PARSE_BUFFER[SCANNER_POS];
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if(SCANNER_POS < PARSE_BUFFER_SIZE)
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SCANNER_POS++;
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return c;
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}
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char * parse_buffer( void )
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{
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return PARSE_BUFFER;
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}
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unsigned int parse_buffer_curr_char( void )
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{
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return PARSE_BUFFER[SCANNER_POS];
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}
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char * parse_buffer_ptr( void )
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{
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return PARSE_BUFFER_PTR;
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}
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unsigned int parse_buffer_pos( void )
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{
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return SCANNER_POS;
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}
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unsigned int parse_buffer_size( void )
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{
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return PARSE_BUFFER_SIZE;
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}
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