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- /*
- Y Y L E X F I L . C
-
- Function reading input for yylex() in the standard (file) situation
- */
-
-
- #include "iccomp.h"
-
- int yylex_file(char *buf, int max_size)
- {
- int
- result;
-
- /* try to read from file */
- if ( (result = read( fileno(yyin), buf, max_size )) > 0 )
- return (result); /* return # bytes read if any */
-
- if (result == 0) /* if none, switch to other fun */
- {
- clear_hidden(); /* clear existing hidden names */
- yylex_input = yylex_hidden; /* connect the buffer-reader */
-
- return (yylex_input(buf, max_size));/* read the hidden source */
- }
-
- error("read() in flex scanner failed"); /* error when read() fails */
- return (0); /* dummy to avoid warning */
- }
-